JP2008006317A - Wall coating method and its apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To effectively apply one or two or more colors of paint jetted from a spray nozzle to a wall to be coated, with a large particle shape, without atomizing the paint within a strong outer membrane by an air membrane jetted from compressed air jetting small holes, in a coating work for the wall to be coated by a spray gun. <P>SOLUTION: A coating apparatus is constituted in that: a compressed air opening 3 is opened in the base part of the nozzle 2 having a plurality of paint jetting openings 1, 1'; a cap nut 5 is screwed with a male screw 4 formed on the outer periphery of the base part; the plurality of compressed air jetting small holes 6 are opened around the center line c of the nozzle 2 on the front face 5' of the cap nut 5; the nozzle 2 projects forward from the front face 5'; and a jetting angle α of the jetting small hole 6 is inclined in the direction increasing forward on the outer periphery with the center line c, and is inclined by some degrees β in a screwing direction a of the center line c. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a paint coating method and apparatus for a concrete wall surface of a building.

  When painting a painted wall with a spray gun, one or more colors of paint (paint) ejected from the spray nozzle diffuses into the air, blurring the outer periphery of the painted area of the painted wall, and the paint diffuses into the air In particular, the greater the distance from the spray nozzle to the wall to be coated, the greater the tendency.

  In addition, the spotted pattern painting by the simultaneous painting of at least multiple colors with a spray gun required skill and reduced the painting efficiency.

  Therefore, each paint is sprayed from a plurality of spray nozzles for each color paint, and spot coating is performed. However, there is a problem that a plurality of nozzles are projected and a paint tank is provided for each nozzle, and the apparatus cannot be downsized (for example, Patent Document 1). )

  In addition, a technique for improving the wettability of the atomized mixture by forming an outer layer film covering the periphery of the paint atomized mixture with pure water to wash the silver mirror film (Patent Document 2).

However, it was necessary to form the outer layer film covering the periphery of the atomized mixture of air and a plurality of paints with pure water (for example, Patent Document 2).

Japanese Patent Publication No.9-192547 JP 2003-340321 A

  According to the present invention, there is a risk that one or more colors of paint ejected from a spray nozzle in a painting operation of a wall to be painted by a spray gun may be scattered outside in a strong outer layer film by an air film ejected from a compressed air ejection small hole. The objective is to apply single or speckled coatings efficiently on the wall to be painted without requiring hydropower.

To achieve the above object, according to the present invention, a compressed air port is first opened at the base of a nozzle having a plurality of paint jet pipes protruding forward, and a cap nut is screwed onto a male screw formed on the outer periphery of the base. A plurality of compressed air ejection small holes are opened around the center line of the nozzle on the front surface of the cap nut, and the nozzle protrudes forward from the front surface, and the ejection angle of the ejection small hole is the front Using a coating apparatus that is inclined in the direction of expansion to the outer periphery of the center line toward the outer periphery and is somewhat inclined in the spiral direction of the center line. A wall-coating method characterized in that the compressed air from is sprayed simultaneously toward the already-painted wall to perform spot coating, and the already-painted color of the above-mentioned painted wall is a mixed color of the above-mentioned plurality of paints,
Secondly, a compressed air port is opened at the base of a nozzle having a paint jet pipe projecting forward, a cap nut is screwed onto a male screw formed on the outer periphery of the base, and a plurality of compressed air is formed on the front surface of the cap nut. A direction in which the ejection hole is opened around the center line of the nozzle and the nozzle protrudes forward from the front surface, and the ejection angle of the ejection hole extends toward the front and expands to the outer periphery of the center line And a coating device that is inclined somewhat in the spiral direction of the center line,
Thirdly, the coating apparatus according to the second invention, wherein there is one paint spray pipe.
Fourthly, the coating apparatus according to the second invention, wherein there are at least two paint ejection pipes,
Consists of.

  Accordingly, the diameter of the outer layer film due to the compressed air ejected from the ejection hole is enlarged toward the wall to be coated, and the outer layer film is applied with a rotational force in the swiveling direction, so that the outer layer is less scattered and strong. In addition, the coating can reach a relatively distant place, and the coating can reach the wall surface to be coated in the spray coating outer layer film, and can be applied with little risk of scattering to the outside of the outer layer film.

  In addition, the spray paint of two colors or two or more colors is spotted in the outer layer film.

  Since the present invention is based on the above-described coating method, there is an effect that one color or a plurality of colors ejected from the paint ejection pipe of the nozzle can be efficiently coated on the wall to be coated in one color or a spotted pattern in a strong outer layer film. is there.

  One or two paint press-fitting pipes 9 and 9 ′ are inserted in the center of the main body 10, and one or two paint outflow passages 11 and 11 communicating with the one or two in the center, respectively. 'Is extended forward at the tip of one nozzle 2 provided in the main body 10 to form one or two paint ejection pipes 1 and 1' (FIG. 6).

  As shown in FIG. 5, the nozzle 2 comprises a large-diameter base 2a, a medium-diameter middle 2 ", and a small-diameter tip 2 '. The nozzle 2 projects integrally with the main body 10, but the small-diameter tip 2' is omitted. There is no problem.

  A male screw 4 is formed on the outer periphery of the large-diameter base portion 2a, and a cap nut 5 is screwed onto the male screw 4 so that a central through hole 5 "opened in the front surface 5 'of the cap nut 5 is set to the middle diameter 2". Fit.

  In this state, as shown in FIG. 5, the front portion 2 ′ and the small-diameter tip portion 2 ′ of the middle diameter of the nozzle 2 protrude forward from the front surface 5 ′ of the cap nut 5.

  In FIG. 6, two paint jet pipes 1, 1 ′ are provided in parallel on the tip surface of the nozzle 2, but one paint jet pipe 1 can be formed (not shown).

  A plurality of compressed air ejection small holes 6 shown in FIG. 3 and FIG. 4 are opened on the front surface 5 ′ of the cap nut 5 at a certain small opening angle around the center line c of the nozzle 2,

  As shown in FIG. 5, the small hole 6 communicates with the compressed air port 3 opened on the front surface 2 a ′ of the large-diameter base portion 2 a via an internal gap s between the cap nuts 5.

  The positions of the ejection small holes 6 are approximately 8 to 16 and are arranged at equal intervals at a position with an opening angle of about 20 to 40 degrees with the center line c as the center.

  Further, the ejection angle α of the small hole 6 is inclined by an angle α toward the front as shown in FIGS. 1 and 5 so as to expand to the outer periphery of the center line c, and as shown in FIG. The outer periphery membrane 12 is formed with a rotational force by turning the outer periphery somewhat in the spiral direction a (angle β: FIG. 3) and rotating spirally around the center line c (FIG. 1). The outer layer film 12 can reach the painted wall 7 through the small hole 6.

  In the outer layer film 12 in contact with the already-painted wall 7, one or two-color paint ejected from the pipes 1 and 1 'is applied in one color or spots (FIG. 2).

  The painted wall 7 is formed with a mixed color of two colors of the spotted coating 8 before the spotted coating 8 is applied.

  As a result, as shown in FIG. 8, even if “unevenness 7 ″” due to the already-painted color 7 ′ occurs between the above-described spots 8 ′ and 8 ″, the spots 8 ′, 8 ″ and “unevenness 7 ″” form one pattern. As it is familiar, it does not give an uncomfortable appearance.

  In addition, what is shown by 13 in the figure is a compressed air supply pipe.

  Since the present invention is configured as described above, one color or speckle coating is efficiently performed within the range of the outer layer film on the wall surface to be coated (paint) in the painting work on the concrete wall to be painted with a spray gun. It is possible.

It is a side view which shows the coating apparatus of this invention. It is a front view of speckle coating. It is the front view of the outer-layer film ejection state which looked at FIG. 1 from the left. It is a perspective view of a cap nut. It is a 1 part notch longitudinal cross-sectional view of FIG. It is the front view which looked at FIG. 5 from the left. (A) is a cross-sectional plan view of FIG. 1, and (b) is a plan view of another embodiment of FIG. It is a photograph of a pre-painted wall and speckle coating.

Explanation of symbols

1, 1 'Paint spray pipe 2 Nozzle 3 Pressed air port 4 Male screw 5 Cap nut 5' Front 6 Pressed air jet small hole c Center line α Spray angle a Spiral direction β Inclination 7 Pre-painted wall 8 Spot coating

Claims (4)

A compressed air opening is opened at the base of the nozzle having a plurality of paint ejection pipes protruding forward;
Screw the cap nut onto the male screw formed on the outer periphery of the base,
Opening a plurality of compressed air ejection holes around the center line of the nozzle on the front surface of the cap nut,
And the nozzle protrudes forward from the front surface,
Using a coating apparatus in which the ejection angle of the ejection hole is inclined in the direction of expanding to the outer periphery with the center line toward the front, and somewhat inclined in the spiral direction of the center line,
From the paint squirting pipe, paints of different colors and compressed air from the squirting small holes are jetted simultaneously toward the already painted wall to perform spot coating,
A wall painting method, wherein the painted color of the painted wall is a mixed color of the plurality of paints. Open the compressed air port at the base of the nozzle with the paint jet pipe protruding forward,
Screw the cap nut onto the male screw formed on the outer periphery of the base,
Opening a plurality of compressed air ejection holes around the center line of the nozzle on the front surface of the cap nut,
And the nozzle protrudes forward from the front surface,
A coating apparatus in which the ejection angle of the ejection hole is inclined in the direction of expanding toward the outer periphery of the center line toward the front and is somewhat inclined in the spiral direction of the center line.   The coating apparatus according to claim 2, wherein the number of the paint ejection pipes is one. The coating apparatus according to claim 2, wherein there are at least two paint ejection pipes.

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