JPH0429892Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a paint applicator for a paint sprayer that is highly suitable for underwater painting.

(Prior art) Conventionally, painting work in seawater, for example, has been limited to cases where the area to be painted is small. The coating was applied by the divers themselves using brushes and trowels.

(Problems to be solved by the invention) Conventional painting work is performed underwater, which has poor work efficiency and requires a long time even when painting a small area. It was difficult to produce it stably, and a sufficient coating effect could not be obtained.

In recent years, the need for painting work in seawater has increased for the purpose of preserving and rust-preventing existing steel marine structures and steel revetments at coastal reclaimed sites, and the area to be painted has also increased. There is. In addition, the performance required for underwater paints has become increasingly sophisticated, and the use of high viscosity thick film paints, multi-component mixed polymer paints, and formulations of rust preventives and antifouling agents has made it possible to
The properties of paints are becoming more diverse, and the conventional methods of painting by brushing and troweling are extremely inefficient, and are not suitable for ensuring stable paint performance, so improvements are needed. is desired.

(Means for solving the problem) The present invention was made in response to such a demand, and specifically, it can be used simply by fitting it into the nozzle at the end of a commercially available air gun or paint pressure hose. Painting work can be carried out easily and efficiently,
It is also a paint applicator for a paint sprayer that can stably form a highly uniform coating film.

That is, in the present invention, the upper ladder side 1-a is thick and the lower ladder side 1-a is thick.
It has a trapezoidal trapezoidal shape with -b being thin, and is equipped with a cap 2 on the upper ladder side 1-a that is fitted with an air gun or a nozzle at the end of a paint pressure hose, and a main hole 3 communicating with the cap 2 inside the main body. A paint supply section 1 is formed by drilling several paint passages 5 branching from this and distributing the paint from the main hole 3 to the tip of the lower ladder side 1-b. In addition to being covered from the upper and lower surfaces, the lower ladder side 1- of the paint passage 5
An upper spatula 8 and a lower spatula 9 made of a flexible material whose tips are press-polymerized are bonded to the upper and lower surfaces of the paint supply portion 1 so as not to form an opening within a certain length from the tip of b. This is an applicator for a paint machine, which is characterized by having several paint passages 5 in the paint supply part 1.
In addition, the upper spatula 8 and the lower spatula 9 are made of flexible material and protrude over a certain length from the tip of the bottom ladder side of the paint passage. The tips of the upper and lower spatulas 8 and 9 are pressed to increase the paint supply pressure in the overlapping part to a predetermined pressure, and the overlapping part is pushed open to form a uniform paint discharge port, thereby achieving uniform coating. It forms a film stably. and especially paint supply (application)
Features include suppressing wasteful outflow of paint at the start, reducing paint consumption, and since the paint application part is made of flexible material, it blends well with the painted surface, allowing for smooth and stable painting. It also has the following.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

This embodiment shows an example in which the paint application portion is formed by an upper spatula and a lower spatula.

In Fig. 1, reference numeral 1 denotes a paint supply part made of synthetic resin or metal material, which is formed into a trapezoidal shape with a thick wall on the upper ladder side 1-a and a thin wall on the lower ladder side 1-b. A cap 2 is attached to 1-a for connection to an air gun 14, which will be described later.
A main hole 3 serving as a paint passage is bored toward the lower ladder side 1-b, and is opened approximately at the center of the paint supply portion 1, and the paint supply portion 1 at the open end of the main hole 3 is opened. In order to distribute the paint to the tip of the lower ladder side 1-b, there is a stable-shaped paint passage 5 formed in the form of one horizontal groove 4 parallel to the lower ladder side 1-b and several vertical grooves perpendicular to this groove. and are drilled. Reference numerals 6 and 7 are screw holes for fixing an upper spatula 8 and a lower spatula 9, which are paint application parts described below.

The upper spatula 8 and the lower spatula 9 have trapezoidal trapezoidal shapes similar to the paint supply portion 1, cover approximately the paint supply portion 1 from the upper and lower surfaces, and protrude from the tip of the paint supply portion 1 by a certain length in an overlapping state ( However, the upper spatula 8 is longer than the lower spatula 9 and protrudes further from the overlapping tip), and has through holes 10 and 1 for fastening, respectively.
1 is drilled in the paint supply portion 1, and is fixed to the screw hole 6 using the set screw 12 and to the screw hole 7 using the set screw 13, respectively, and assembled as shown in Figs. 2 and 3. . In FIG. 3, reference numeral 14 is a commercially available air gun, in which a cartridge containing paint 14a is inserted into a cylinder 14b, and a lever 14c is inserted into the cylinder 14b.
With this operation, the slot valve in the air gun 14 is opened, and the paint 14a in the cartridge is pumped by the air blowing action from the pressure air pipe 14d, and is discharged through the paint applicator according to the present invention to perform painting.

(Function) Next, a working procedure will be explained based on FIG. 3 regarding a painting work using the present invention assembled as described above.

First, the cap 2 is removed, and a cartridge filled with the paint 14a is inserted into the cylinder 14b of the air gun 14 by cutting off the tip slightly, and then the cap 2 is fitted to connect the air gun 14 and the paint applicator of the present invention. .

Next, confirm that the pressure and polymerization state at the tips of the lower ladder side 1-b of the paint supply portion 1 of the upper spatula 8 and the lower spatula 9 is normal, and after positioning it at the coating start position, move the lever 14c of the air gun 14. Subtract
This opens the slot valve and opens the compressed air pipe 14.
The paint 14 inside the cartridge is removed by air blowing from inside d.
A is supplied to the paint supply section 1 of the paint applicator of the present invention through the cap 2.

Then, the paint 14a is distributed and supplied to the tip of the lower ladder side 1-b through the main hole 3, the horizontal groove 4, and several paint passages 5.

The discharge port at the tip of the lower ladder side 1-b, that is, the tip of the paint passage 5, is open, but it is formed by the tips of the upper spatula 8 and the lower spatula 9 made of flexible material, and does not have an opening. Since the paint 14a is once covered by this polymerized part, it is possible to prevent the paint 14a from being suddenly discharged at the same time as the paint is supplied. It can be suppressed. Then, the paint supply pressure rises to a predetermined pressure and pushes open the overlapping part to form (open) a paint discharge port that uniformly discharges the paint, and from there the paint starts to be discharged with a uniform thickness and is supplied. Painting is carried out by sliding the overlapping part of the upper spatula 8 and lower spatula 9 onto the coating surface of the paint applicator of the present invention through the air gun 14 while maintaining the pressure.

In this case, since the upper spatula 8 and the lower spatula 9 are made of a flexible material, they have good compatibility (adhesion) with the painted surface and can perform coating in a smooth and stable state.

When performing this coating, the tip of the upper spatula 8 is pressed slightly against the surface to be painted so that the angle between the paint passage 5 of the paint supply section 1 and the surface to be painted is 25°.
Preferably maintained at ~35°.

The coating film thickness is adjusted as appropriate by changing the amount of paint supplied, the moving speed of the paint applicator, the pressing force, etc. When the paint in the cartridge runs out during painting work, air will come out from the tip of the spatula, so immediately release the lever 14c, remove the cap 2, and replace the cartridge paint 14a with a new one.
Repeat the painting process in the same manner as above.

In the above embodiment, a method using the air gun 14 has been described, but in other embodiments, it is also possible to use a pressure-feeding tank method by attaching it to the tip of the nozzle when the paint is directly discharged from the tank from the nozzle. However, it is within the scope of implementation of this invention.

For the lower spatulas 8 and 9 used in this invention, synthetic rubber such as nitrile rubber or fluororesin rubber is excellent in terms of solvent resistance, and its hardness is 60° in Shore hardness.
It was experimentally confirmed that the angle of ~70° has the most appropriate elasticity for coating film formation.

(Effects of the invention) This invention can be easily attached to a coating machine and used, and allows the paint application part to stably adhere to the surface to be painted.
It can continuously and stably form a uniform paint film in a repellent state, dramatically improving work performance.It also suppresses excess paint flow at the initial stage of paint supply, and improves paint retention. It is also possible to reduce the basic unit.

Although the present invention is particularly suitable for underwater coating, it can also be used for general coating of land structures.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of the device of the present invention, FIG. 2 is an assembled perspective view, and FIG. 3 is a partially cutaway side view showing the device in use when attached to an air gun. 1 is the paint supply part, 2 is the cap, 3 is the main hole,
4 is a horizontal groove, 5 is a paint passage, 6 and 7 are screw holes, 8 and 9
is a spatula, 8 is an upper spatula, 9 is a lower spatula, 10 and 11 are through holes, 12 and 13 are set screws, 14 is an air gun,
14a is paint, 14b is a cylinder, 14c is a lever, and 14d is a pressure air pipe.

Claims (1)

[Scope of utility model registration request] The cap 2 has a trapezoidal shape with a thick wall on the upper ladder side 1-a and a thin wall on the lower ladder side 1-b, and is fitted with an air gun or a nozzle at the end of a paint pressure hose on the upper ladder side 1-a.
A main hole 3 communicating with the cap 2 is formed inside the main body of the paint supply section 1, and several stripes branching from the main hole 3 and distributing the paint from the main hole 3 to the tip of the lower ladder. A paint passage 5 is bored, and an upper spatula 8 and a lower spatula 9 whose tips protrude forward from the lower ladder side tip of the paint passage 5 are installed so as to cover approximately the paint supply portion 1 from the upper and lower surfaces. A coating device for a paint sprayer, which is attached to the upper and lower surfaces of a paint supply part 1, and is characterized in that the tips of the upper and lower spatulas 8, 9 are overlapped and pressed together so that they do not open before the paint is discharged.