Spraying assisting device and spraying device

Abstract

To provide a spraying assisting device which enables a worker to readily check appropriate operating conditions in a spraying device configured to blow a material from a nozzle toward a target, including blasting or metal spraying, and also to provide such a spraying device.SOLUTION: A spraying assisting device 1 in a spraying device that blows a material from a nozzle 2 toward a target 3, the spraying assisting device comprising: an angle detection section 12 configured to detect an angle θ of the nozzle 2; a light irradiation section 10,11 configured to apply a plurality of light beams 10A, 11A from different directions toward a spraying direction 2A of the nozzle 2, the light irradiation section 10, 11 being arranged such that the plurality of light beams 10A, 11A intersect at a predetermined set distance from a tip of the nozzle 2; and a control section 13 configured to make the light beams visually recognizable when the angle θ detected by the angle detection section 12 is within a predetermined set angle range.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a spray assist device for a spray device that sprays a substance from a nozzle onto an object, and to the spray device itself. [Background technology]

[0002] In blasting, the quality of the blasted surface is greatly affected by the distance (blast distance) and angle (blast angle) between the blast nozzle and the steel substrate. Similarly, in metal spraying, the quality of the sprayed coating is greatly affected by the distance (spray distance) and angle (spray angle) between the spray gun and the steel substrate.

[0003] The blasting distance is the distance from the tip of the blast nozzle to the surface (steel substrate). There is an appropriate blasting distance depending on the blasting machine, air pressure, abrasives used, etc. If blasting is performed at an incorrect distance, the finish of the steel substrate after blasting (such as "rust removal rate" and "surface roughness") may not meet the standard values. The appropriate blasting distance is said to be 10 to 40 cm (see Japanese Industrial Standards (JIS H8300)).

[0004] The blasting angle is the direction of the nozzle relative to the steel substrate surface. There is an optimum blasting angle. If the nozzle is at a right angle (90 degrees) to the steel substrate surface, the abrasives may penetrate the steel substrate surface more often. In this case, considering the need to remove the abrasives, construction efficiency may decrease. Furthermore, if the blasting angle is too small, the surface roughness of the steel substrate after blasting will be small, resulting in problems such as not meeting standard values. The optimum blasting angle is said to be 60 to 90 degrees (see Japanese Industrial Standards (JIS H8300)).

[0005] For the reasons mentioned above, in order to improve the quality of blasting, it is necessary to adjust the blasting distance and angle during blasting. Furthermore, for example, Non-Patent Document 1 describes that the standard work standards for surface preparation are that the nozzle angle during blasting should be 60 to 90° relative to the substrate, and that the standard work standards for metal spraying are that the spraying distance should be 100 to 300 mm from the substrate surface, and that the spraying angle should be as perpendicular as possible to the substrate, at 45° or more.

[0006] Similarly, there are appropriate spraying distances and spraying angles for metal spraying, and adhering to these directly leads to improved quality of the sprayed coating. The appropriate spraying distance is 8 to 30 cm from the substrate, and the spraying angle should be 90 degrees as a general rule, with angles of 45 degrees or less being avoided (see Japanese Industrial Standards (JIS H8300)). [Prior art documents] [Non-patent literature]

[0007] [Non-Patent Document 1] “What is anti-corrosion thermal spraying? / Anti-corrosion thermal spraying method”, [online], Anti-corrosion Thermal Spraying Cooperative, [Retrieved February 22, 2024], Internet<URL:http: / / www.tscpc.jp / method / index.html> Summary of the Invention [Problem to be solved by the invention]

[0008] The present invention aims to provide a spraying auxiliary device and a spraying device that allows an operator to easily check the appropriate working conditions in a spraying device that sprays a substance from a nozzle onto an object such as a blast or metal spray. [Means for solving the problem]

[0009] The spraying auxiliary device of the present invention is a spraying auxiliary device for a spraying device that sprays a substance from a nozzle onto an object, and includes an angle detection unit that detects the angle of the nozzle, a light irradiation unit that irradiates multiple lights from different directions toward the spraying direction of the nozzle, the light irradiation unit being arranged so that the multiple lights intersect at a predetermined set distance from the tip of the nozzle, and a control unit that makes the angle detected by the angle detection unit visible when it is within a predetermined set angle range.

[0010] According to the spraying auxiliary device of the present invention, in a spraying device that sprays a substance from a nozzle onto an object, when multiple lights irradiated from the light irradiation unit toward the object intersect, the object is at a predetermined set distance from the tip of the nozzle and the nozzle angle is within a predetermined set angle range, so that the object can be seen by the control unit, allowing the worker to easily spray at the predetermined set distance and set angle, which are appropriate working conditions.

[0011] It is desirable that the control unit illuminates at least one of the multiple lights emitted by the light emitting unit to enable visual confirmation. This allows the operator to easily visually confirm that the nozzle angle is within a predetermined set angle range by the light emitting unit being illuminated. Note that "illuminating" includes variations in lighting, such as flashing.

[0012] Furthermore, it is desirable that the control unit be configured to visually indicate whether the angle detected by the angle detection unit is about to deviate from or enter a predetermined set angle range by changing the light emitted by the light irradiation unit. This makes it possible to visually indicate whether the nozzle angle is about to deviate from or enter the predetermined set angle range by changing the light, making it easier for the operator to adjust the nozzle angle to fall within the predetermined set angle range.

[0013] Here, it is desirable that the plurality of lights have different shapes, so that the worker can distinguish the plurality of lights from the differences in shape and easily visually recognize the intersection of the plurality of lights.

[0014] It is also desirable that the multiple lights are different colors, which allows the worker to distinguish between the multiple lights by their different colors and makes it easier to see the intersection of the multiple lights. [Effects of the Invention]

[0015] (1) This configuration includes an angle detection unit that detects the angle of the nozzle, a light irradiation unit that irradiates multiple lights from different directions toward the spraying direction of the nozzle, the light irradiation unit being positioned so that the multiple lights intersect at a predetermined set distance from the tip of the nozzle, and a control unit that makes it visible when the angle detected by the angle detection unit is within a predetermined set angle range.This allows the worker to easily spray at a predetermined set distance and set angle, which are appropriate working conditions, and makes it possible to improve the quality of the spraying work.

[0016] (2) The control unit makes it visible by turning on at least one of the multiple lights emitted by the light irradiation unit, so that the worker can easily see that the nozzle angle is within a predetermined set angle range, improving workability.

[0017] (3) When the angle detected by the angle detection unit is about to deviate from or enter the predetermined set angle range, the control unit makes the state visible by changing the light emitted by the light irradiation unit. This makes it easier for the worker to adjust the nozzle angle to fall within the predetermined set angle range, further improving workability.

[0018] (4) Since the multiple lights have different shapes, it is easier for the worker to see the intersection of the multiple lights, further improving workability.

[0019] (5) Since the lights are of different colors, it is easier for the worker to see the intersection of the lights, further improving workability. [Brief explanation of the drawings]

[0020] [Figure 1] 1A and 1B are schematic diagrams illustrating the configuration of a nozzle tip portion of a spraying device equipped with a spraying auxiliary device in an embodiment of the present invention, where (A) is a plan view and (B) is a side view. [Figure 2] FIG. 10 is a diagram showing a pattern of light emitted from one of the light emitting units. [Figure 3] FIG. 10 is a diagram showing a pattern of light emitted from another light emitting unit. [Figure 4] 10A and 10B are diagrams illustrating examples when the nozzle is at a predetermined set distance and set angle. [Figure 5] FIG. 10 is a diagram showing an example when the nozzle is not at a predetermined set distance. [Figure 6] FIG. 10 is a diagram showing an example when the nozzle is not at a predetermined set angle. DETAILED DESCRIPTION OF THE INVENTION

[0021] Figure 1 is a schematic diagram of the nozzle tip portion of a spraying device equipped with a spraying auxiliary device in an embodiment of the present invention, where (A) is a plan view and (B) is a side view, Figure 2 is a diagram showing the pattern of light emitted from one of the light irradiation units, Figure 3 is a diagram showing the pattern of light emitted from another of the light irradiation units, Figure 4 is a diagram showing an example when the nozzle is at a predetermined set distance and set angle, Figure 5 is a diagram showing an example when the nozzle is not at the predetermined set distance, and Figure 6 is a diagram showing an example when the nozzle is not at the predetermined set angle.

[0022] As shown in Figure 1, the spraying assist device 1 in an embodiment of the present invention is a spraying device that sprays a substance from a nozzle 2 onto an object 3, and includes multiple light irradiation units 10, 11 that irradiate light 10A, 11A from different directions toward the spraying direction 2A of the nozzle 2, an angle detection unit 12 that detects the angle θ of the nozzle 2, and a control unit 13.

[0023] The light irradiation unit 10 irradiates the object 3 with a cross-shaped light 10A as shown in FIG. 2. The light irradiation unit 11 irradiates the object 3 with a circular light 11A as shown in FIG. 3. The light irradiation units 10, 11 are arranged so that the lights 10A, 11A intersect at a predetermined set distance from the tip of the nozzle 2. In this embodiment, the cross-shaped light 10A is red and the circular light 11A is green. By making the lights 10A, 11A different shapes and colors in this way, the intersection of the lights 10A, 11A is easily visible.

[0024] For example, if the predetermined set distance from the tip of the nozzle 2 to the surface 3A to be treated of the object 3 is set to a distance that corresponds to appropriate working conditions, when the distance from the tip of the nozzle 2 to the surface 3A to be treated of the object 3 is a distance that corresponds to appropriate working conditions, the centers of the lights 10A and 11A will intersect on the surface 3A to be treated (see FIG. 4). On the other hand, when the distance from the tip of the nozzle 2 to the surface 3A to be treated of the object 3 is not a distance that corresponds to appropriate working conditions, the centers of the lights 10A and 11A will not intersect on the surface 3A to be treated (see FIG. 5).

[0025] The angle detection unit 12 detects the angle θ of the nozzle 2 with respect to a reference direction (the horizontal direction in this embodiment). As the angle detection unit 12, for example, a MEMS (Micro-Electro-Mechanical Systems) sensor can be used, but the angle detection unit 12 is not limited to this and various other sensors can be used.

[0026] The control unit 13 makes the angle θ detected by the angle detection unit 12 visible when it is within a predetermined set angle range. For example, if this predetermined set angle range is set to an angle range corresponding to appropriate work conditions, the control unit 13 turns on the circular light 11A emitted by the light irradiation unit 11 only when the angle θ detected by the angle detection unit 12 is within the angle range corresponding to the appropriate work conditions (see FIGS. 4 and 5).

[0027] On the other hand, when the angle θ detected by the angle detection unit 12 is outside the angle range corresponding to the appropriate working conditions, the control unit 13 turns off the circular light 11A from the light irradiation unit 11 (see FIG. 6). Note that in FIG. 6, the turning off of the light 11A is indicated by a dotted line. This allows the worker to visually determine whether the angle θ of the nozzle 2 is within the angle range corresponding to the appropriate working conditions by checking whether the circular light 11A is on or off (off).

[0028] The control unit 13 may also make the cross-shaped light 10A emitted by the other light irradiation unit 10 visible by turning on the cross-shaped light 10A. The control unit 13 may also make the cross-shaped light 10A visible by turning on the lights 10A and 11A emitted by both light irradiation units 10 and 11. In short, it is sufficient to make the cross-shaped light 10A visible by turning on at least one of the multiple lights 10A and 11A emitted by the light irradiation units 10 and 11.

[0029] In a spraying device equipped with the spraying auxiliary device 1 having the above configuration, when the angle θ of the nozzle 2 is not within the angle range corresponding to the appropriate working conditions (outside the predetermined set angle range), only the cross-shaped light 10A is lit and the circular light 11A is not lit, as shown in Figure 6. Therefore, the worker can adjust the angle θ of the nozzle 2 so that both lights 10A and 11A are lit, thereby setting the angle to the set angle corresponding to the appropriate working conditions.

[0030] Furthermore, when both lights 10A and 11A are turned on, if the distance from the tip of the nozzle 2 to the surface 3A to be treated of the object 3 is not a distance that corresponds to the appropriate working conditions, the centers of the lights 10A and 11A will not coincide, i.e., they will not intersect, as shown in Fig. 5. Therefore, the worker can set the distance that corresponds to the appropriate working conditions by adjusting the distance from the tip of the nozzle 2 to the surface 3A to be treated of the object 3 so that the centers of the lights 10A and 11A coincide, as shown in Fig. 4.

[0031] In other words, in the spraying auxiliary device 1 of this embodiment, when the multiple lights 10A, 11A irradiated from the light irradiation units 10, 11 toward the target object 3 intersect, the target object 3 is visible when it is at a predetermined set distance from the tip of the nozzle 2 and the angle θ of the nozzle 2 is within a predetermined set angle range, so the worker can easily spray at the predetermined set distance and set angle, which are appropriate working conditions, and the quality of the spraying work can be improved.

[0032] Furthermore, in the spraying assist device 1 of this embodiment, the control unit 13 makes it possible to visually check by turning on at least one of the multiple lights 10A, 11A emitted by the light irradiation units 10, 11, so the operator can easily visually check that the angle θ of the nozzle 2 is within a predetermined set angle range, improving workability. Note that instead of turning on or off the lights 10A, 11A, the control unit 13 can also make it possible to visually check by providing a separate display unit such as an indicator.

[0033] Furthermore, when the angle θ of the nozzle 2 is about to deviate from the predetermined set angle range, or when it is slightly off and is about to reenter the predetermined set angle range, the control unit 13 can make the state visible by changes in light such as blinking of the lights 10A and 11A or an increase or decrease in the light intensity, or can make the amount of deviation visible by changes in light such as the blinking speed or the degree of increase or decrease in the light intensity. This makes it easier for the operator to adjust the angle θ of the nozzle 2 to be within the predetermined set angle range.

[0034] Furthermore, in the spraying assist device 1 of this embodiment, one of the light emitting units 10, 11 emits a cross-shaped light 10A, and the other emits a circular light 11A of a different color from the cross-shaped light 10A, making it easier for the worker to visually recognize the intersection of the multiple lights 10A, 11A. This further improves workability. The shapes of the lights 10A, 11A may be any shape as long as the intersection can be visually recognized, but it is preferable that they have different shapes. The colors of the lights 10A, 11A can also be the same color or different colors. [Industrial Applicability]

[0035] The present invention is useful as a spraying auxiliary device and spraying device in a spraying device that sprays a substance from a nozzle onto an object such as a blast or metal spray, and is particularly suitable as a spraying auxiliary device and spraying device that allows an operator to easily check the appropriate working conditions. [Explanation of symbols]

[0036] 1. Spraying auxiliary device 2 nozzles 3. Object 10,11 Light irradiation unit 12 Angle detection unit 13 Control Unit

Claims

1. A spray assist device for a spray device that sprays a substance from a nozzle onto an object, an angle detection unit that detects the angle of the nozzle; a light irradiation unit that irradiates a plurality of light beams from different directions toward the spraying direction of the nozzle, the light irradiation unit being disposed so that the plurality of light beams intersect at a predetermined set distance from the tip of the nozzle; a control unit that makes the angle detected by the angle detection unit visible when the angle is within a predetermined set angle range; A spraying auxiliary device having:

2. 2. The spraying assist device according to claim 1, wherein the control unit makes the light visible by turning on at least one of the plurality of lights emitted by the light emitting unit.

3. The spraying assist device of claim 1, wherein the control unit makes it possible to visually confirm the state by a change in the light emitted by the light irradiation unit when the angle detected by the angle detection unit is likely to fall outside a predetermined set angle range or to fall within the predetermined set angle range.

4. 2. The spray assist device of claim 1, wherein the plurality of lights are either different shapes or different colors, or both.

5. A spraying device comprising the spraying auxiliary device according to any one of claims 1 to 4.

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