Closed dust collection method

Abstract

To provide a closed type dust recovery method that eliminates the risk of scattered dust adhering to and being inhaled by workers and ensures the safety of the workers. [Solution] A laser is irradiated onto an object from a laser irradiation device 1. Dust generated during irradiation is collected. The object to be removed is surrounded by a garment 2. The object is visually inspected through a work window 3 provided in the garment 2. The laser irradiation device 1 is operated through a work glove 4 protruding from inside the garment 2. Dust is collected in a dust collector 5 via a suction port 1A and a suction hose 1B of the laser irradiation device 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 film, 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 scatter 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 is configured to collect dust and other particles into a dust collector via a suction hose.

[0003] Patent Document 1 describes a fume collection nozzle that enhances 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 hand side of the nozzle body. These two suction ports are configured to collect dust particles generated during laser irradiation.

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

[0005] [Patent Document 1] Patent No. 6936534 [Patent Document 2] JP 2015-199029 A Summary of the Invention [Problem to be solved by the invention]

[0006] However, even if the collection nozzle of Patent Document 1 can increase the suction power of the laser irradiation device, it is difficult to suck up all the dust scattered around. In particular, since the worker is close to the dust generation location, the scattered dust is likely to adhere to the worker, and there is also a risk of inhaling 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 becomes extremely difficult for workers to enter and exit the sealed booth 2. In addition, after working in the booth 2, there is a possibility that dust will adhere to the clothes, etc., and workers cannot leave the booth 2 as they are. Therefore, there is also the issue that a lot of effort is required for maintenance after use, such as removing the adhered dust.

[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 flying 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 substantially box-shaped, and a work window 3 is formed on the work glove 4. The laser irradiation device 1 in the garment 2 is operated while visually observing the object P through the work window 3.

[0012] The third means, the work window 3 and the work glove 4, are provided in multiple pieces on the clothing body 2, and the laser irradiation device 1 is operated by selecting the work window 3 and the work glove 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 body of clothing 2, and the laser irradiation device 1 is moved via the moving device 6. Effect of the Invention

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

[0015] Moreover, the worker can select the work glove 4 located close to the working range of the object P and operate the laser irradiation device 1, so that the worker can perform the work 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 a large object P such as a wall surface. [Brief description of the drawings]

[0017] [Figure 1] FIG. 2 is a schematic perspective view showing a state in which the present invention is used. [Diagram 2] FIG. 2 is a schematic side view showing a state in which the present invention is used. [Diagram 3] FIG. 2 is a schematic inner view showing the case of the present invention. [Figure 4]FIG. 11 is a schematic inner view showing another embodiment of a case of the present invention. [Diagram 5] 1 is a schematic diagram showing a moving device of the present invention; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

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

[0019] First, the object P to be removed is surrounded by the covering body 2 (see FIG. 2). The covering body 2 in the illustrated example uses a plate body capable of blocking 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 is appropriately changed depending on the position of the object P to be removed. For example, if the object P is on a floor surface, etc., a back panel facing the work panel 2C is provided, or if the object P is on a ceiling surface, etc., the top panel 2B is eliminated and a floor panel or back panel is 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 configure the clothing body 2 in any shape by using 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 viewed, 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 FIG. 1). The outside of the clothing body 2 is open, and the work gloves 4 are provided with the fingertips protruding into the inside of the clothing body 2 (see FIG. 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 close 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 when moving the laser irradiation device 1 inside the garment 2. The moving device 6 shown in the figure includes a rail 6A horizontally installed inside the work plate 2C, a pulley 6B that moves along the 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 body 2. The moving device 6 is not limited to the illustrated example, and may be any mechanism that can move the laser irradiation device 1 to a desired position.

[0026] Dust generated by laser irradiation is collected from suction port 1A of laser irradiation device 1 through suction hose 1B to dust collector 5 outside laser irradiation device 1 (see FIG. 1). In the figure, an insertion port 2Aa through which suction hose 1B passes is formed in a part of side plate 2A. Then, suction hose 1B is passed out from insertion port 2Aa and connected to dust collector 5. At this time, by using a HEPA filter in dust collector 5, even ultrafine dust can be prevented from leaking out 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 of the present invention without departing from the spirit and scope 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 Board 2C Work Plate 3. Working 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 object with a laser from a laser irradiation device, comprising: A sealed dust collection method characterized in that the object to be removed is surrounded by clothing, a laser irradiation device inside the clothing is operated through a work glove protruding from the outside of the clothing to the inside, and dust generated by laser irradiation is collected from the suction port of the laser irradiation device through a suction hose to a dust collector outside the clothing.

2. 2. A method for collecting dust in a closed type 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. The enclosed dust collection method according to claim 2, wherein a plurality of the work windows and the work gloves are provided on the clothing body, and the worker selects the work window and the work glove that are closest to the working range of the object and operates the laser irradiation device.

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

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