JPH05337847A - Marking method by laser beam irradiation - Google Patents

Abstract

PURPOSE:To enable simple marking with a high accuracy by radiating laser beams to the face to be marked by horizontal rotation, and applying material, colored or discolored by laser beams, to the face to be marked. CONSTITUTION:In the case of performing marking to the column wall surface 4 of a building, a rotary laser level 1 is set into the height position of 1000mm, for instance, from the floor of a slab 2 first, and UV group laser beams 3 are continuously radiated to the column wall surface 4 by horizontal rotation. Coating material intermixed with material colored or discolored by laser beams such as photochromic material or thermochromic material is then applied by spraying on the laser beam radiated face using a spray gun 5. The laser beam applied part is thereby colored/discolored to blue from colorless or to violet from pink, for instance, so as to reveal a level marked line 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a marking method for a wall surface of a building using a laser beam, and in particular, a combination of a horizontally rotated laser beam and a coloring agent or a color changing agent by laser beam irradiation. Regarding how to put out.

[0002]

2. Description of the Related Art Conventionally, the problems to be solved by the invention
For example, in the case of performing stakeout in the finishing work of a building, a pair of stakeout carpenters is a group of two, and a level (leveling instrument) is used to give out the inking. That is, one person is looking at the level, and the other person is looking at the level.
Put a plurality of marks at m positions at regular intervals. Then, continuous marking lines are formed between the marks by marking with a black ink pot. However, in the above-mentioned conventional marking method, it takes time for the person looking into the level to send a signal for up / down adjustment while another person makes a mark, and it takes a long time to work, and the pillars are placed at four places and the wall surface is about 5 m long. It had to be marked on the pitch, and work efficiency was also very poor. In addition, it is necessary to redo due to misreading the level scale or misunderstanding, or when doubling the misalignment when marking pillars, walls, and inking with a black ink pot,
There is a problem that the marking accuracy is reduced. The present invention has been made in order to solve the above-mentioned problems, and provides a method capable of marking out easily with high accuracy.

[0003]

The marking method of the present invention comprises:
In the marking out method in the finishing work of a building, while irradiating a laser beam to a marking-out surface while rotating horizontally, a material that develops or discolors by the laser beam is applied to the marking-out surface. This is a marking method using laser light irradiation. A photochromic material or a thermochromic material is preferable as the coloring or discoloring material in the present invention, and its application can be performed by spraying, roller application or any other appropriate application means. It is preferable that the photochromic material or the thermochromic material is mixed with a sizing agent / binding material such as carboxymethyl cellulose, polyvinyl chloride, or the like and a solvent thereof to be in a liquid state to improve the adhesiveness. It is also preferable to use it as a mixture with a paint. Known materials can be used as the photochromic material,
Examples thereof include spiropyrans, thioindigo, piantrons, and triphenylmethane leuco forms. The thermochromic material is a material that develops and discolors by heating when exposed to infrared laser light. For example, a reversible type, an irreversible type, or a molten type can be used. Examples of the reversible type include a mercury iodide complex salt type Examples of the irreversible type include cobalt phosphate octahydrate system. Note that the photochromic material or the thermochromic material that develops or discolors when irradiated with laser light is a reversible type that normally develops or discolors when irradiated with laser light, and gradually returns to its original state when the irradiation is completed. Therefore, the finishing work or the like may be performed while the marking state is maintained during that period.

Examples of the laser light generator include a gas laser generator, a solid-state laser generator, and a semiconductor laser generator. It is preferable to use a rotating laser level in order to irradiate the marking surface while horizontally rotating the laser beam. The rotary laser level is the one in which the laser generator is mounted on the level in an automatic rotary manner. When the distance between the marking surface and the rotary laser level is 20 m, the laser line width is 2 mm.
Becomes

[0005]

Embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an explanatory view of a state in which a rotating laser level is installed on a concrete slab, and FIG. 2 is an explanatory view of a state in which a coloring material is spray-applied in the vicinity of a laser beam applied to a pillar surface from the rotating laser level. First, in FIG. 1, the rotating laser level 1 is set to 1000 mm above the floor of the slab 2, and the ultraviolet laser light 3 is horizontally rotated on the column wall surface 4 and continuously irradiated. Then, as shown in FIG. 2, a coating material containing 3% of spironaphthoxazine (manufactured by Nippon Chemix Co., Ltd.) as a photochromic material is sprayed onto the laser light irradiation surface by a spray gun 5. Then, the part where the laser beam 3 hits develops from colorless to blue, and the blue level marking-out line 6 appears. When the laser light 3 for irradiating the marking-out wall surface 4 is an infrared ray type, a coating material containing 30% cobalt phosphate octahydrate as a thermochromic material is spray-coated on the marking-out wall surface 4,
The part where the laser light hits changes from pink to purple, and the purple line can be marked. As described above, according to the method of this example, after the rotating laser level is installed at a certain altitude and the marking-out required pillar / wall surface is irradiated with the laser beam, the coloring / discoloring material is sprayed onto the surface by a spray gun. Since it can be put out, the marking process on the wall surface, as in the conventional method,
A complicated process such as a black thread tensioning process is not required, and highly accurate black marking is possible. In order to sufficiently develop the color or change the color, it is possible to further irradiate a laser beam after coating. Further, the procedure can be changed to spray a color-developing or color-changing material with a spray gun and then irradiate with a laser beam to perform marking.

[0006]

As described in the above embodiments and the like, according to the present invention, complicated steps such as a marking step on a wall surface and a black thread tensioning step, which are required in a conventional method, are not required, and a rotary laser level is simply set. By irradiating a laser beam on the marking-out required pillar / wall surface etc. installed at a certain altitude, and applying a coloring / discoloring material to the surface with a spray gun etc., the irradiated laser light is directly expressed as a level ink, Highly accurate marking is possible.
It is possible to easily and quickly perform high-accuracy marking even on a wide range of wall surfaces without requiring skill as in the conventional method.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of an embodiment in which a rotating laser level is installed on a concrete slab.

FIG. 2 is an explanatory view of an example of a state in which a coloring material is spray-applied to the vicinity of a laser beam applied to a column surface from a rotating laser level

[Explanation of symbols]

 1: Rotating laser level 2: Slab 3: Laser light 4: Wall surface 5: Spray gun 6: Marking line

Claims (3)

[Claims] 1. A marking method for finishing a building, wherein a marking surface is irradiated with a laser beam while being horizontally rotated, and a marking material is coated with a material that is colored or discolored by the laser beam. A method for marking out by irradiating laser light, which comprises: 2. The marking out method by laser light irradiation according to claim 1, wherein the material that develops or changes color is a photochromic material or a thermochromic material. 3. The material which develops or changes color, wherein the material is mixed with a sizing agent and a binder.
Alternatively, the marking-out method by laser light irradiation according to item 2.