Sealed dust collecting method

Abstract

To provide a closed type dust recovery method which eliminates the possibility that scattered dust adheres to a worker and is sucked by the worker and maintains the safety of the worker.SOLUTION: An object is irradiated with a laser from a laser irradiation device 1. To recover dust generated during irradiation. The periphery of an object to be removed is surrounded by a covering body 2. An object is viewed through a working window 3 provided in a clothing body 2. The laser irradiation device 1 is operated through a working glove 4 projected inside the clothing body 2. The dust is recovered in a dust collector 5 through a sucking port 1A and a sucking hose 1B of the laser irradiating device 1.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a sealed dust collection method that collects dust while protecting workers when irradiating a large object such as a wall surface with a laser to evaporate and sublimate paint, rust, etc. and collect the dust. [Background technology]

[0002] When a laser is irradiated onto an object to remove rust, paint, etc. by evaporating or sublimating it, metal dust and harmful substances are scattered from the object into the surrounding area. The laser irradiation device used for this type of work is equipped with a suction port near the laser irradiation port, and the dust is collected in a dust collector via a suction hose.

[0003] Patent Document 1 describes a fume collection nozzle that increases the suction power of the suction port of a laser irradiation device. This collection nozzle has a suction port 03 formed at the tip of the nozzle body, and an upper suction port 04 formed on the handle side of the nozzle body. These two suction ports are configured to collect dust generated during laser irradiation.

[0004] Patent Document 2 describes a dust scattering prevention device that prevents the scattering of dust generated within an enclosed space. This scattering prevention device forms a booth 2 that seals the work space. That is, the dust-containing gas within the booth 2 is exhausted to the outside of the building by an exhaust device 30, and gas is drawn into the booth 2 from outside via an intake filter 20, thereby maintaining a constant air pressure within the booth 2. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 6936534 [Patent Document 2] Japanese Patent Application Laid-Open No. 2015-199029 Summary of the Invention [Problem to be solved by the invention]

[0006] However, even though the collection nozzle in Patent Document 1 can increase the suction power of the laser irradiation device, it is difficult to suck up all of the dust that is scattered around. In particular, since workers are close to the dust generation location, scattered dust is likely to adhere to them, and there is also a risk that they may inhale vaporized harmful substances.

[0007] On the other hand, the dust prevention device described in Patent Document 2 is configured to exhaust dust generated inside the sealed booth 2. However, the safety of the workers working inside the booth 2 is not ensured at all. In other words, the dust generated inside the sealed booth 2 may adhere to the workers inside the booth 2 and be inhaled.

[0008] Moreover, it is extremely difficult for workers to enter and exit the sealed booth 2. Also, after working in the booth 2, there is a possibility that dust may adhere to their clothing, etc., and they cannot simply leave the booth 2. This poses the problem of requiring a lot of time and effort for maintenance after use, such as removing the dust that has adhered.

[0009] The present invention has been devised to solve the above-mentioned problems, and aims to provide a sealed dust collection method that protects the safety of workers by preventing scattered dust from adhering to workers when a laser is irradiated onto a large object such as a wall surface, and by preventing the inhalation of vaporized harmful substances. [Means for solving the problem]

[0010] In order to achieve the above-mentioned object, the first means of the present invention is a dust collection method for collecting dust generated by irradiating an object P with a laser from a laser irradiation device 1, in which the object P to be removed is surrounded by a clothing body 2, the laser irradiation device 1 inside the clothing body 2 is operated through a work glove 4 protruding from the outside to the inside of the clothing body 2, and the dust generated by laser irradiation is collected from the suction port 1A of the laser irradiation device 1 through a suction hose 1B to a dust collector 5 outside the clothing body 2.

[0011] The garment 2 of the second means is roughly box-shaped, and a work window 3 is formed on the work glove 4, and the laser irradiation device 1 inside the garment 2 is operated while visually observing the object P through the work window 3.

[0012] The third means has a plurality of work windows 3 and work gloves 4 provided on the clothing body 2, and the laser irradiation device 1 is operated by selecting the work window 3 and work gloves 4 that are closest to the work range of the object P.

[0013] The fourth means is a recovery method in which a moving device 6 for holding and moving the laser irradiation device 1 is provided inside the garment 2, and the laser irradiation device 1 is moved via the moving device 6. [Effects of the Invention]

[0014] According to the present invention, the worker can remove rust and other materials by irradiating the laser while being protected by the clothing 2 and work gloves 4, eliminating the risk of dust adhering to the worker. In addition, vaporized harmful substances will not be inhaled by the worker.

[0015] Moreover, the worker can select the work glove 4 in a position close to the work area of ​​the object P and operate the laser irradiation device 1, so that the work can be performed efficiently.

[0016] Furthermore, the moving device 6 provided on the garment 2 makes it easy to move the laser irradiation device 1 inside the garment 2, making it possible to handle a wide range of work areas, such as large objects P such as wall surfaces. [Brief explanation of the drawings]

[0017] [Figure 1] FIG. 1 is a schematic perspective view showing a state in which the present invention is used. [Figure 2] 1 is a schematic side view showing a state in which the present invention is used. [Figure 3] FIG. 2 is a schematic inside view showing the case of the present invention. [Figure 4]FIG. 10 is a schematic inner view showing another embodiment of the case of the present invention. [Figure 5] 1 is a schematic diagram showing a moving device of the present invention; DETAILED DESCRIPTION OF THE INVENTION

[0018] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention relates to a method for collecting dust particles generated when a laser beam is irradiated from a laser irradiation device 1 onto an object P such as a wall surface to remove rust, paint, or the like.

[0019] First, the object P to be removed is surrounded by the covering body 2 (see Figure 2). The covering body 2 in the illustrated example uses plates that can block dust and is roughly box-shaped with the surface facing the object P and the bottom open. That is, it has left and right side panels 2A, a top panel 2B connecting the two side panels 2A, and a work panel 2C that the worker faces. The configuration of the covering body 2 can be changed appropriately depending on the location of the object P to be removed. For example, if the object P is on the floor, etc., a back panel facing the work panel 2C can be provided, or if the object P is on the ceiling, etc., the top panel 2B can be eliminated and a floor panel or back panel can be provided (not shown).

[0020] It is also possible to form the clothing body 2 from a transparent sheet material without using a plate that can block dust. In this case, it is possible to form the clothing body 2 in any shape by using it in combination with a support material (not shown) that surrounds the object P. In this way, the shape and material of the clothing body 2 can be changed as desired.

[0021] The clothing body 2 is provided with a work window 3 through which the object P can be seen, and work gloves 4 protruding from the outside of the clothing body 2 into the inside of the clothing body 2 are provided below the work window 3 (see Figure 1). The outside of the clothing body 2 is open, and the work gloves 4 are provided with their fingertips protruding into the inside of the clothing body 2 (see Figure 2).

[0022] Laser-shielded light-shielding protective gear is used for the work window 3. Therefore, workers can work without using protective gear. In the illustrated example, a horizontally long rectangular work window 3 is shown, but the shape of the work window 3 and the light-shielding means can be selected arbitrarily.

[0023] During work, the object P is viewed through the work window 3 of the work plate 2C, and the laser irradiation device 1 is operated through the work gloves 4 (see FIG. 1). In the illustrated example, one pair of work gloves 4 is placed under the work window 3 (see FIG. 3). In addition, by placing multiple work windows 3 on the work plate 2C and selecting the work gloves 4 placed in each work window 3, it becomes possible to work with the work gloves 4 that are closest to the working range of the object P (see FIG. 4).

[0024] 5 shows a moving device 6 disposed inside the garment 2. This moving device 6 is used to move the laser irradiation device 1 inside the garment 2. The moving device 6 shown in the figure includes a rail 6A installed horizontally inside the work plate 2C, a pulley 6B that moves along this rail 6A, and a holding belt 6C suspended from the pulley 6B.

[0025] The laser irradiation device 1 is held by a holding belt 6C and moved to a desired position by a pulley 6B. This moving device 6 allows the worker to move the laser irradiation device 1 without entering the clothing object 2. Note that the moving device 6 is not limited to the illustrated example, and any mechanism that can move the laser irradiation device 1 to a desired position may be used.

[0026] Dust generated by laser irradiation is collected from suction port 1A of laser irradiation device 1 via suction hose 1B into dust collector 5 outside laser irradiation device 1 (see Figure 1). In the illustration, an insertion port 2Aa through which suction hose 1B passes is formed in part of side panel 2A. Then, suction hose 1B is passed out from insertion port 2Aa and connected to dust collector 5. In this case, the use of a HEPA filter in dust collector 5 can prevent even ultrafine dust from leaking to the outside.

[0027] The means of the present invention are not limited to the illustrated examples, and modifications can be made freely within the scope that does not change the gist of the present invention. [Explanation of symbols]

[0028] P Object 1. Laser irradiation device 1A Suction port 1B Suction hose 2 Clothing 2A side plate 2Aa insertion port 2B Top Plate 2C Work Plate 3 Work window 4. Work gloves 5. Dust collector 6. Mobile Devices 6A rail 6B Pulley 6C Retaining Belt

Claims

1. A dust collection method for collecting dust generated by irradiating a target with a laser from a laser irradiation device, comprising: A sealed dust collection method characterized by surrounding the object to be removed with clothing, operating a laser irradiation device inside the clothing through work gloves protruding from the outside to the inside of the clothing, and collecting dust generated by laser irradiation from the suction port of the laser irradiation device through a suction hose to a dust collector outside the clothing.

2. 2. A sealed dust collection method according to claim 1, wherein the garment is substantially box-shaped, a work window is formed on the work glove, and the laser irradiation device inside the garment is operated while visually observing the object through the work window.

3. 3. A sealed dust collection method according to claim 2, wherein a plurality of work windows and work gloves are provided on the clothing body, and the worker selects the work window and work glove that are closest to the work area of ​​the object and operates the laser irradiation device.

4. 2. The enclosed dust collection method according to claim 1, further comprising a moving device for holding and moving the laser irradiation device inside the garment, and moving the laser irradiation device via the moving device.

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