JPH08192096A - Coating method and coating guide device used for the same - Google Patents

Abstract

PURPOSE: To lessen the variation in a coating quantity and to improve coating appearance by moving a laser beam at a prescribed speed in a coating direction while irradiating a surface to be coated with the laser beam, then moving a coating means in synchronization with the movement of the laser beam and coating the surface to be coated. CONSTITUTION: This coating guide device 3 is installed in a position apart from the surface 2 to be coated and has a laser beam line irradiation unit 5 which is moved at the prescribed speed in the coating direction to be made as a measure for the coating speed of the coating means while irradiating the surface 2 to be coated with the laser beam line 4 of the direction orthogonal with the coating direction. While the outside wall surface of a building unit 1 which is the surface 2 to be coated is irradiated with the laser beam, the laser beam is moved at the prescribed speed in the coating direction and, for example, a coating gun which is the coating means is moved in synchronization with the movement of the laser beam, by which the surface 2 to be coated is coated. As a result, the coating speed is made constant, the variation in the coating quantity is lessened and the coating appearance is improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating method and a coating guide device used for the coating method which can improve the coating appearance by reducing the variation in the coating amount.

[0002]

2. Description of the Related Art For example, coating of outer walls of a unit building is generally performed in a unit state, that is, in a manufacturing process of a building unit in a factory for the purpose of improving productivity and shortening a construction period.

In this case, the control of the coating amount is left to the intuition and experience of the operator, and the operator performs the coating while visually comparing the coating state with the limit sample plate.

As a technique related to the coating of building units, a drying unit for building units has been proposed (Japanese Patent Publication No. 2-35230).

[0005]

However, in the above-mentioned conventional coating method, there is a problem that the coating amount tends to vary and the coating appearance tends to deteriorate.
Factors that cause variations in the applied amount are, for example, the type of coating gun, the diameter of the coating material injection hole, the coating pressure, the coating speed (coating speed), the coating viscosity, and the like, which are the coating means. Among these factors, it is possible to manage the factors other than the coating speed, but it is difficult to keep the coating speed constant because it is artificial and varies from person to person.

Therefore, the present inventor irradiates the surface to be coated with laser light and moves it in the coating direction at a predetermined speed, and if this is used as a guide for the moving speed of the coating means, the coating speed should be kept constant. The present invention has been completed and the present invention has been completed, and it was found that the variation in the coating amount can be suppressed to be small.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a coating method and a coating guide device which can reduce the variation in the coating amount and improve the coating appearance.

[0008]

In order to achieve the above object, a coating method according to a first aspect of the present invention is such that a surface to be coated is irradiated with laser light and is moved in a coating direction at a predetermined speed, and the laser light is moved. According to the above, the coating means is moved to coat the surface to be coated.

A coating method according to a second aspect is the coating method according to the first aspect, wherein the surface to be coated is an outer wall surface of a building unit. A coating method according to a third aspect is the coating method according to the first or second aspect, characterized in that the coating gun is moved in parallel with the surface to be coated in accordance with the movement of the laser beam.

The coating guide device according to claim 4 is installed at a position apart from the surface to be coated, and the surface to be coated is irradiated with a laser beam line in a direction orthogonal to the coating direction at a predetermined speed in the coating direction. It is characterized in that a laser light line irradiation unit is provided for moving and using it as a guide for the coating speed of the coating means.

The coating guide device according to claim 5 is installed at a position apart from the surface to be coated, and the surface to be coated is irradiated with laser light dots at a predetermined coating width interval in a direction orthogonal to the coating direction for coating. It is characterized by being provided with a laser light dot irradiation unit for indicating the width.

[0012]

According to the coating method of claims 1 to 3, while irradiating a laser beam onto the surface to be coated, for example, the outer wall surface of the building unit, it is moved at a predetermined speed in the coating direction, and the movement of this laser beam is controlled. In addition, since the coating gun, which is a coating means, is moved to coat the surface to be coated, it is possible to keep the coating speed constant, and it is possible to reduce variations in the coating amount and to improve the coating appearance. Can be improved.

According to the coating guide device of the fourth aspect,
Installed at a position away from the surface to be coated, and irradiating the surface to be coated with a laser beam line in a direction orthogonal to the coating direction, and moving at a predetermined speed in the coating direction to use it as a reference for the coating speed of the coating means. Since it is equipped with the laser light line irradiation unit, the coating speed can be made constant by moving the coating means in accordance with the movement of the laser light line, and it becomes possible to reduce the variation in the coating amount. The coating appearance can be improved.

According to the coating guide device of the fifth aspect,
A laser light dot irradiation unit that is installed at a position distant from the surface to be coated and that irradiates the surface to be coated with laser light dots at a predetermined coating width interval in a direction orthogonal to the coating direction and uses it as a reference for the coating width. Since it is provided, it is possible to further reduce the variation in the coating amount, and it is possible to further improve the coating appearance.

[0015]

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

In FIG. 1, reference numeral 1 is a building unit which constitutes a unit building, and a coating guide device 3 which serves as a guide when coating the outer wall surface of the building unit 1 as a surface 2 to be coated.
Is used. The building unit 1 is configured to form a living room of a building, and has a planar U-shaped wall structure in this embodiment, but a wall material is provided in a steel frame structure, a wooden shaft structure, or the like, It may be formed in a box shape or the like.

The coating guide device 3 is installed at a position distant from the surface 2 to be coated and irradiates the surface 2 to be coated with a laser beam line 4 in a direction orthogonal to the coating direction at a predetermined speed in the coating direction. A laser light line irradiation unit 5 is provided for moving and using it as a guide for the coating speed of the coating means. In the present embodiment, the laser light line irradiation unit 5 is used in order to coat the outer wall surface of the building unit 1 having a relatively high height with the vertical direction as the coating direction.
Has a columnar casing 6 provided in a vertical standing state, and a pair of upper and lower laser light emitting portions is provided in the casing 6 (not shown). The laser beam lines 4 (4a, 4b) are irradiated to the half region 2a and the lower half region 2b, respectively, and a predetermined speed S, for example S = w · n / b, is applied vertically.
-It is configured to move back and forth at p cm / min. Here, w is the discharge amount of the paint from the coating gun (g /
Min), n is the number of times of repeated coating (for example, in the case of one round trip, n =
2), b is required coating amount (g), p is coating width interval (cm)
Is. Since the coating state varies depending on the distance between the surface to be coated 2 and the coating gun, the angle of the coating gun, etc., the most suitable conditions are set and the above conditions are taken into consideration. Laser light line 4 (4a,
The moving speed S of 4b) is set.

The coating guide device 3 is installed at a position distant from the surface 2 to be coated and has a predetermined coating width interval p of, for example, 10 cm on the surface 2 to be coated in a direction orthogonal to the coating direction.
A laser light dot irradiation unit 8 is provided for irradiating the laser light dots 7 at a pitch to use as a guide for the coating width. In this embodiment, in order to irradiate the laser light dots 7 (7a, 7b) in the horizontal direction on the upper side of each of the upper half region 2a and the lower half region 2b of the surface 2 to be coated, The laser light dot irradiation unit 8 has a beam-shaped casing 9 horizontally provided above the laser light irradiation unit 5, and a plurality of laser light emitting portions are provided in the casing 9 in the longitudinal direction (illustration). Omitted).

Although the painting work of the building unit 1 can be performed outdoors, it is preferable to use it indoors which is not affected by the weather. In this case, it is possible to form a coating work chamber for accommodating the building unit 1 and performing the painting work, and install the laser light line irradiation unit 5 and the laser light dot irradiation unit 8 on one side of the coating work chamber. preferable. Further, it is preferable that a conveyor for loading and unloading the building unit 1 is installed in the coating work room. The laser light irradiation units of the laser light line irradiation unit 5 and the laser light dot irradiation unit 8 may each be provided with a light source (laser light emitting unit), but the laser light from a single light source is split into a plurality of beams. It may be configured to irradiate.

Next, the coating method will be described. First,
The laser light line irradiation unit 5 and the laser light dot irradiation unit 8 are operated to irradiate the surface to be coated 2 of the building unit 1 with the laser light line 4 and reciprocate in the coating direction, and at the same time, the laser light dot 7 is irradiated. Then, the coating width of the coating gun, which is the coating means, is adjusted to the width interval P of the laser light dots 7, and is substantially the same as the movement of the laser light line 4, that is, the moving speed of the laser light line 4 as a guide. The coating gun is moved in parallel with the surface 2 to be coated at a speed, and the coating 2 is sprayed onto the surface 2 to be coated so that the coating is sequentially performed. In this case, the surface to be coated 2 is divided into an upper half region 2a and a lower half region 2b, and laser light lines 4a and 4b are respectively provided in the respective regions 2a and 2b.
Also, since the coating work is performed by irradiating the laser light dots 7a and 7b, the surface to be coated 2 having a relatively high height
The painting work can be done easily and efficiently. Also,
In this case, a work scaffold is used for painting the upper half region 2a of the surface 2 to be painted.

According to the above coating method, the outer wall surface of the building unit 1, which is the surface to be coated 2, is moved in the coating direction at a predetermined speed while irradiating the outer wall surface of the building unit 1, and the coating means is moved in accordance with the movement of the laser light. For example, since the coating gun is moved to coat the surface 2 to be coated, the coating speed can be made constant, the variation in the coating amount can be reduced, and the coating appearance can be improved. . Further, according to the coating guide device 3 used in this coating method, it is installed at a position distant from the surface 2 to be coated, and coating is performed while irradiating the surface 2 to be coated with a laser beam line 4 in a direction orthogonal to the coating direction. Since a laser light line irradiation unit 5 is provided to measure the coating speed of the coating gun by moving it in a predetermined direction, by moving the coating gun in accordance with the movement of the laser light line 4. The coating speed can be kept constant, the variation in the coating amount can be reduced, and the coating appearance can be improved. Further, the coating guide device 3 is installed at a position distant from the surface 2 to be coated and irradiates the surface 2 to be coated with laser light dots 7 at a predetermined coating width interval p in a direction orthogonal to the coating direction. Since the laser beam dot irradiation unit 8 is used as a guide for the coating width, it is possible to make the coating width constant, and it is possible to further reduce the variation in the coating amount, and to further improve the coating appearance. Can be improved.

Although the embodiment of the present invention has been described in detail above with reference to the drawings, the specific structure is not limited to this embodiment, and various design changes can be made without departing from the gist of the present invention. Is. For example, as the surface to be coated, a surface of a face material such as an exterior material or an interior material or a surface of a housing can be applied in addition to the outer wall surface of the building unit. A coating gun is preferable as the coating means, but a spray gun other than the coating gun may be used.

Further, in the above embodiment, the surface to be coated is divided into two regions, the upper and lower regions, but it may be divided into three or more regions depending on the size of the surface to be coated. Alternatively, instead of dividing into a plurality of regions, one region may be coated as it is. Further, the coating direction of the surface to be coated is preferably the vertical direction in order to prevent the problem of paint dripping, but it may be the horizontal direction. Further, in the laser light dot irradiation unit, the casing thereof is rotated or reciprocally rotated about an axis, or the laser light irradiation unit is rotated or reciprocally rotated to move the laser light dots on the surface to be coated in the coating direction. Alternatively, it may be moved back and forth, whereby the coating width can be made constant in the coating direction, and the variation in the coating amount can be further reduced.

[0024]

In summary, according to the present invention, the following excellent effects can be obtained. (1) According to the coating method of claims 1 to 3, while irradiating a laser beam on the surface to be coated, for example, the outer wall surface of the building unit, the laser beam is moved in the coating direction at a predetermined speed, and the laser beam is moved. In addition, since the coating gun, which is a coating means, is moved to coat the surface to be coated, it is possible to keep the coating speed constant, and it is possible to reduce variations in the coating amount and to improve the coating appearance. Can be improved. (2) According to the coating guide device of the fourth aspect, the coating guide device is installed at a position distant from the surface to be coated, and the surface to be coated is irradiated with a laser beam line in a direction orthogonal to the coating direction. Since a laser light line irradiation unit for moving at a speed to be used as a guide for the coating speed of the coating means is provided, the coating speed is made constant by moving the coating means in accordance with the movement of the laser light line. Therefore, it is possible to reduce the variation in the coating amount and improve the coating appearance. (3) According to the coating guide device of claim 5, the coating guide device is installed at a position apart from the surface to be coated, and the surface to be coated is irradiated with laser light dots at a predetermined coating width interval in a direction orthogonal to the coating direction. Since it is equipped with a laser light dot irradiation unit as a guide for the coating width, it is possible to further reduce the variation in the coating amount and further improve the coating appearance.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

[Explanation of symbols]

 1 Building Unit 2 Surface to be Painted 3 Coating Guide Device 4 Laser Light Line 5 Laser Light Line Irradiation Unit 7 Laser Light Dot 8 Laser Light Dot Irradiation Unit p Coating Width Interval

Claims (5)

[Claims] 1. A method for coating the surface to be coated by irradiating the surface to be coated with laser light, moving the surface in the coating direction at a predetermined speed, and moving coating means in accordance with the movement of the laser light. How to paint. 2. The coating method according to claim 1, wherein the surface to be coated is an outer wall surface of a building unit. 3. The coating method according to claim 1, wherein the coating gun is moved in parallel with the surface to be coated in accordance with the movement of the laser beam to perform coating. 4. A coating speed of a coating means which is installed at a position distant from the surface to be coated and which is moved at a predetermined speed in the coating direction while irradiating the surface to be coated with a laser beam line in a direction orthogonal to the coating direction. A coating guide device characterized by being equipped with a laser beam line irradiation unit for use as a guide. 5. A laser which is installed at a position apart from the surface to be coated and which is used as a guide for the coating width by irradiating the surface to be coated with laser light dots at predetermined coating width intervals in a direction orthogonal to the coating direction. A coating guide device comprising a light dot irradiation unit.