JP2022180903A - portable laser cleaning device - Google Patents

Abstract

To provide a portable laser cleaning device capable of specifying the distances to an irradiation gun and an object during irradiation work.SOLUTION: A laser cleaning device 10 comprises a portable irradiation gun 14 which emits cleaning laser light B for peeling off sticking matter on a surface of the object S of cleaning to irradiate the object S of cleaning with the emitted laser light B, and further comprises distance measurement means 16 which measures the distance L between the irradiation gun 14 and object S of cleaning, determination means 18 which determines whether the measured distance L is equal to a previously set distance or within a predetermined range, and output means 20 which outputs the determination result in a visually or audibly confirmable form.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to a portable laser cleaning device suitable for cleaning stones, tiles, mortar, metals, etc. provided in existing buildings.

Conventionally, a portable laser cleaning device is known (see Patent Document 1, for example). Compared to high-pressure hot water cleaning and blast cleaning, portable laser cleaning equipment is less likely to scrape the front of the object, so it is particularly suitable for objects such as historical buildings that require preservation of the object itself. . The laser beam emitted from the irradiation gun has the highest energy at the focal point (corresponding to the distance from the irradiation gun to the object, which can be set arbitrarily) and reacts with contaminants on the surface of the object.

As a conventional technique related to control of a laser cleaning device, a system for moving a laser head that emits laser light is known (see, for example, Patent Document 2). The system of Patent Document 2 includes a moving mechanism for moving a laser head in a substantially rectangular parallelepiped transport case with one side open in a substantially horizontal direction and a substantially orthogonal direction to the opening surface. A laser beam is applied while moving in a horizontal direction and a substantially orthogonal direction to peel off and remove the coating on the surface of the object placed on the opening side. The laser head has an autofocus function and can measure the distance between the laser head and the object. A distance measuring sensor is attached to the laser head and is used to detect when the coating has been removed to expose the surface of the object. In addition, a monitoring camera is installed in the transport case, and the monitoring camera is used to image-recognize the peeling state of the coating on the surface of the object to optimize the laser irradiation conditions.

Japanese Patent Application Laid-Open No. 2002-301439 Japanese Patent Application Laid-Open No. 2020-40115

By the way, in the above-described conventional portable laser cleaning device, as shown in FIG. 3, the irradiation gun 3 attached to the cable 2 extending from the device main body 1 is used by hand, so the distance L to the object 4 is not constant. There is a problem. Moreover, since the worker must wear protective glasses, there is a problem that it is difficult to grasp the distance L to the object 4 . Since it is difficult to grasp the distance L, the same spot may be irradiated many times, and spots may occur on the surface of the object 4 . Therefore, there has been a demand for a technique that can clearly indicate to the operator the distance L (focus length) between the irradiation gun 3 and the object 4 during the irradiation work.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a portable laser cleaning apparatus that can clearly indicate to the operator the distance between the irradiation gun and the object during irradiation work.

In order to solve the above-described problems and achieve the object, a portable laser cleaning device according to the present invention emits a cleaning laser beam for removing and cleaning deposits adhering to the surface of an object to be cleaned. a laser cleaning apparatus comprising a portable irradiation gun for irradiating an object to be cleaned with an emitted laser beam, wherein the distance measuring means measures the distance between the irradiation gun and the object to be cleaned; and the measured distance is set in advance. It is characterized by further comprising determination means for determining whether or not the distance matches the distance or is within a predetermined range, and output means for outputting the determination result in a form that can be visually or audibly confirmed.

Further, another portable laser cleaning apparatus according to the present invention is the above-described invention, wherein the output means is a wearable device such as spectacles, goggles, earphones, headphones, or a head-mounted type, or a surface of the object to be cleaned. It is characterized by using at least one projection device for projecting the determination result.

Further, another portable laser cleaning device according to the present invention emits a cleaning laser beam for removing and cleaning deposits adhering to the surface of an object to be cleaned, and directs the emitted laser beam to the object to be cleaned. A laser cleaning device equipped with a portable irradiation gun for irradiation, wherein the distance measuring means measures the distance between the irradiation gun and an object to be cleaned, and the measured distance matches a preset distance or is within a predetermined range. and a control means for controlling to stop emission of the laser beam from the irradiation gun when it is determined that the measured distance is not within a predetermined range. do.

According to the portable laser cleaning device of the present invention, a cleaning laser beam is emitted for removing and cleaning deposits adhering to the surface of an object to be cleaned, and the object to be cleaned is irradiated with the emitted laser beam. A laser cleaning apparatus equipped with a portable irradiation gun, comprising a distance measuring means for measuring the distance between the irradiation gun and an object to be cleaned, and whether or not the measured distance matches a preset distance or is within a predetermined range. and an output means for outputting the determination result in a form that can be confirmed visually or audibly. can be easily indicated to the operator.

Further, according to another portable laser cleaning device according to the present invention, the output means is a wearable device such as eyeglasses, goggles, earphones, headphones, or a head-mounted type, or outputs the determination result to the surface of the object to be cleaned. Since at least one projection device is used for projection, it is possible to reliably inform the operator whether or not the distance between the irradiation gun and the object to be cleaned is appropriate.

Further, according to another portable laser cleaning device according to the present invention, a cleaning laser beam is emitted for removing and cleaning deposits adhering to the surface of an object to be cleaned, and the emitted laser beam is used to clean the object to be cleaned. A laser cleaning device equipped with a portable irradiation gun for irradiating an object, comprising a distance measuring means for measuring the distance between the irradiation gun and the object to be cleaned, and the measured distance matching a preset distance or within a predetermined range. and a control means for controlling to stop emission of the laser beam from the irradiation gun when it is determined that the measured distance is not within a predetermined range. It is possible to prevent excessive irradiation of the laser light onto the object to be cleaned, and to reduce unevenness on the surface of the object to be cleaned.

FIG. 1 is a conceptual diagram showing Embodiment 1 of a portable laser cleaning device according to the present invention. FIG. 2 is a conceptual diagram showing Embodiment 2 of a portable laser cleaning device according to the present invention. FIG. 3 is an explanatory diagram showing an example of a conventional portable laser cleaning device.

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a portable laser cleaning device according to the present invention will be described in detail below with reference to the drawings. In addition, this invention is not limited by this embodiment.

(Embodiment 1)
First, Embodiment 1 of the present invention will be described.
As shown in FIG. 1, the portable laser cleaning apparatus 10 according to the first embodiment includes an apparatus main body 12, an irradiation gun 14, a distance measuring means 16, a determining means 18, an output means 20, and a control means. 22.

The irradiation gun 14 is a portable gun that emits a cleaning laser beam B for peeling and cleaning the deposits adhering to the surface of the object S to be cleaned, and irradiates the object S to be cleaned with the emitted laser beam B. is. The irradiation gun 14 is connected to the device body 12 via a cable 24 . The characteristics of the laser beam B emitted from the irradiation gun 14, such as the output, intensity, irradiation area, etc., are set to predetermined values in advance.

The distance measuring means 16 is for measuring the distance L between the irradiation gun 14 and the object to be cleaned S, and can be composed of, for example, a laser rangefinder. If a laser rangefinder is used, the distance measuring means 16 is desirably installed in the irradiation gun 14 .

The determination means 18 determines whether or not the distance L measured by the distance measurement means 16 matches a preset distance or is within a predetermined range. In the illustrated example, the determining means 18 is mounted on the apparatus main body 12, but may be provided on the irradiation gun 14 as well.

The output means 20 outputs the result of determination by the determination means 18 in a visually or audibly recognizable form. The output unit 20 is configured using a projection device that projects the determination result onto the surface of the object S to be cleaned in a visually recognizable form. This projection device can be configured using, for example, a projector projection device that projects an image. By projecting and displaying an image representing the determination result on the surface of the cleaning target S from the projector projection device, the determination result can be quickly and reliably notified to the operator performing the irradiation operation while looking at the cleaning target S. can. As an image representing the determination result, for example, an image such as 〇 is used when it is determined that the distance matches the preset distance, and an image such as X is used when it is determined that the distance is deviated from the preset distance. may The projection device is desirably fixed to the irradiation gun 14 in the same orientation as the irradiation gun 14 so that an image can be projected onto the site irradiated with the laser beam B from the irradiation gun 14. can be placed in place.

Further, the output means of the present invention is not limited to the above projection device. As an output means, for example, a wearable device such as eyeglasses such as protective glasses, goggles, earphones, headphones, head-mounted, clothes, and mobile terminals is used, and the determination result is displayed as an image from this wearable device. , voice, vibration information, etc. may be output. By doing so, it is possible to quickly and reliably inform the operator who performs the irradiation work while wearing these devices of the determination result.

The control means 22 is for controlling each operation of the irradiation gun 14 , the distance measuring means 16 , the determination means 18 and the output means 20 . In the illustrated example, the control means 22 is mounted on the apparatus main body 12, but may be provided on the irradiation gun 14 as well. In this embodiment, the control means 22 sends the distance L measured by the distance measuring means 16 to the determining means 18 and acquires the determination result from the determining means 18 . Then, an image is set based on the obtained determination result, and control is performed to output the set image from the output means 20 . For example, control is performed so that an image such as ◯ is output from the output means 20 in the case of the judgment result that the distance is consistent with the preset distance, and an image such as X is outputted in the case of the judgment result that the distance is deviated from the preset distance. .

The operation and action of the above configuration will be described.
An operator holds the irradiation gun 14 in his/her hand and irradiates the surface of the object S to be cleaned with the laser beam B to perform the cleaning operation. During this operation, the distance L from the irradiation gun 14 to the object to be cleaned S is measured by the distance measuring means 16 at predetermined time intervals. The measurement result is sent to the determination means 18 via the control means 22 and used for determination. As a result of the determination, when it is determined that the distance L matches the preset distance, an image such as ◯ is output from the output means 20, and when it is determined that it deviates from the set distance , an image such as x is output from the output means 20 . The output image is projected in substantially the same direction as the emission direction of the irradiation gun 14, and is projected onto the portion of the surface of the object S to be cleaned S irradiated with the laser beam B. As shown in FIG. Images such as ◯ and × that are projected and specified can be easily visually confirmed by the operator. If the visually confirmed image is ◯, the distance L (focus length) between the irradiation gun 14 and the object to be cleaned S is appropriate. focal point length) is not appropriate. Therefore, it is possible to reliably inform the operator whether or not the distance L (focus length) between the irradiation gun 14 and the object to be cleaned S is appropriate.

(Embodiment 2)
Next, Embodiment 2 of the present invention will be described.
As shown in FIG. 2, in the portable laser cleaning apparatus 100 according to the second embodiment, instead of using the output means 20 in the first embodiment, the control means 22 controls the irradiation gun 14 to stop. It is the one that was made.

The control means 22 controls each operation of the irradiation gun 14 , the distance measurement means 16 and the determination means 18 . In the illustrated example, the control means 22 is mounted on the apparatus main body 12, but may be provided on the irradiation gun 14 as well. In this embodiment, the control means 22 sends the distance L measured by the distance measuring means 16 to the determining means 18 and acquires the determination result from the determining means 18 . Then, based on the obtained determination result, stop control for stopping the emission of the laser beam B from the irradiation gun 14 is performed. More specifically, when the determination unit 18 determines that the measured distance L is not within a predetermined range (is deviated), the control unit 22 instructs the irradiation gun 14 to stop. A signal is transmitted to perform control to stop the operation of emitting laser light from the irradiation gun 14 .

The operation and action of the above configuration will be described.
An operator holds the irradiation gun 14 in his/her hand and irradiates the surface of the object S to be cleaned with the laser beam B to perform the cleaning operation. During this operation, the distance L from the irradiation gun 14 to the object to be cleaned S is measured by the distance measuring means 16 at predetermined time intervals. The measurement result is sent to the determination means 18 via the control means 22 and used for determination. As a result of the determination, when it is determined that the distance is deviated from the set distance, the control means 22 sends a stop instruction signal to the irradiation gun 14 to stop the emission of the laser beam B. FIG. Thus, when the distance L from the irradiation gun 14 to the object to be cleaned S deviates from the preset distance (focus length), the irradiation of the laser beam B is stopped. By stopping the irradiation, it is possible to reliably inform the operator whether or not the distance L between the irradiation gun 14 and the object to be cleaned S is appropriate. In addition, it becomes possible to prevent excessive irradiation of the laser beam to the object S to be cleaned. As a result, spots on the surface of the object S to be cleaned can be reduced.

It should be noted that the present invention is not limited to the first or second embodiment described above, and may have a configuration in which the first and second embodiments are combined. In other words, the configuration may be such that both the output means 20 and the control means 22 for controlling the stop of the laser beam B emitted from the irradiation gun 14 under predetermined conditions are provided. In this way, it is possible to reliably inform the operator whether or not the distance L (focus length) between the irradiation gun 14 and the object to be cleaned S is appropriate. In addition, it is possible to prevent excessive irradiation of the object S to be cleaned with laser light, and to reduce the occurrence of spots on the surface of the object S to be cleaned.

INDUSTRIAL APPLICABILITY As described above, according to the portable laser cleaning device of the present invention, a cleaning laser beam is emitted for removing and cleaning deposits adhering to the surface of an object to be cleaned, and the emitted laser beam is emitted. A laser cleaning apparatus comprising a portable irradiation gun for irradiating an object to be cleaned, comprising distance measuring means for measuring the distance between the irradiation gun and the object to be cleaned, and the measured distance matching a preset distance or a predetermined distance. Since the apparatus further includes determination means for determining whether or not the object is within the range, and output means for outputting the determination result in a form that can be visually or audibly confirmed, the distance between the irradiation gun and the object to be cleaned during the irradiation operation is increased. Appropriateness or non-appropriateness can be clearly indicated to the operator.

Further, according to another portable laser cleaning device according to the present invention, the output means is a wearable device such as eyeglasses, goggles, earphones, headphones, or a head-mounted type, or outputs the determination result to the surface of the object to be cleaned. Since it is constructed using at least one projection device for projection, it is possible to reliably inform the operator whether or not the distance between the irradiation gun and the object to be cleaned is appropriate.

Further, according to another portable laser cleaning device according to the present invention, a cleaning laser beam is emitted for removing and cleaning deposits adhering to the surface of an object to be cleaned, and the emitted laser beam is used to clean the object to be cleaned. A laser cleaning device equipped with a portable irradiation gun for irradiating an object, comprising a distance measuring means for measuring the distance between the irradiation gun and the object to be cleaned, and the measured distance matching a preset distance or within a predetermined range. and a control means for controlling to stop emission of the laser beam from the irradiation gun when it is determined that the measured distance is not within a predetermined range. It is possible to prevent excessive irradiation of the laser light onto the object to be cleaned, and to reduce the occurrence of spots on the surface of the object to be cleaned.

INDUSTRIAL APPLICABILITY As described above, the portable laser cleaning device according to the present invention is useful as a laser cleaning device equipped with a portable irradiation gun, and in particular, the distance between the irradiation gun and the object is indicated to the operator during irradiation work. suitable for

REFERENCE SIGNS LIST 10, 100 portable laser cleaning device 12 device body 14 irradiation gun 16 distance measuring means 18 determination means 20 output means 22 control means 24 cable B laser beam L distance S object to be cleaned

Claims (3)

A laser cleaning apparatus equipped with a portable irradiation gun that emits a cleaning laser beam for removing and cleaning deposits adhering to the surface of an object to be cleaned, and irradiates the object to be cleaned with the emitted laser beam. ,
distance measuring means for measuring the distance between the irradiation gun and the object to be cleaned; judging means for judging whether or not the measured distance matches a preset distance or is within a predetermined range; and output means for outputting in a form that can be confirmed by the portable laser cleaning device. The output means is characterized by using at least one of a wearable device such as eyeglasses, goggles, earphones, headphones, or a head-mounted device, or a projection device that projects the determination result onto the surface of the object to be cleaned. 2. The portable laser cleaning device of claim 1. A laser cleaning apparatus equipped with a portable irradiation gun that emits a cleaning laser beam for removing and cleaning deposits adhering to the surface of an object to be cleaned, and irradiates the object to be cleaned with the emitted laser beam. ,
distance measuring means for measuring the distance between the irradiation gun and the object to be cleaned; determining means for determining whether or not the measured distance matches a preset distance or is within a predetermined range; A portable laser cleaning apparatus, further comprising control means for controlling to stop emission of laser light from the irradiation gun when it is determined that the laser light is not within the range.

Images