JPH02281130A - Clear-paint detecting apparatus - Google Patents

Abstract

PURPOSE:To prevent miss of application of clear paint by projecting testing light having a specified wavelength on an applied surface from a light projecting device, and judging the presence or absence of the clear paint based on the amount of the testing light which is received with a photodetector. CONSTITUTION:A light projecting device 12 is composed of an optical fiber 9 for ultraviolet rays and a light source 11. The ultraviolet rays having a specified wavelength are projected on an applied surface P of a clear paint. The visible light other than the ultraviolet rays reflected from the applied surface P is cut with a filter 13. The ultraviolet rays are received with a photodetector 10 through an ultraviolet-ray lens 14. The received ultraviolet rays are electrically processed in a control part 15 and transduced into the image data having the density corresponding to the amount of the received light. The image having the density corresponding to the image data signal is displayed on a monitoring TV 16. When, the clear paint is applied on the applied surface P, the amount of the received light in the photodetector 10 becomes large, and the image on the TV 16 becomes black. When the clear paint is not applied, the image of the TV 16 becomes white. The presence or absence of the clear paint can be judged based on the black and white of the image.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention is applicable to clear paints applied to colored paint surfaces in swimming pools, clear waterproofing agents applied to rooftop floors and walls, etc. The present invention relates to a clear coating material detection device that detects the presence or absence of a coating material.

<Conventional technology> Conventionally, when painting the surrounding wall surface of a pool, a colored paint is applied and then a clear paint is applied to the painted surface to protect the colored paint and improve the waterproofing effect. ing.

Finally, a clear waterproofing agent is applied to the rooftop floor and walls to make them waterproof.

<Problem to be solved by the invention> However, as mentioned above, clear coating materials such as rear paint and clear waterproofing agents are colorless and transparent, so even if they are applied, it is difficult to visually determine whether or not they have been applied. There was a problem in that the paint could not be confirmed and the paint leaked in some areas, which caused deterioration of the colored paint and even caused water leakage.

When such a problem occurs, it is not enough to just repair the leaked area in terms of appearance, and the repair requires a great deal of time and effort, making it extremely uneconomical.

The present invention was made in view of the above circumstances, and an object of the present invention is to provide a device useful for preventing the leakage of clear coating material.

<Means for Solving the Problems> In order to achieve the above-mentioned purpose, the clear coating material detection device of the present invention includes a light irradiation device that irradiates a test light of a specific wavelength onto a coated surface, and a The present invention includes a light receiver that receives reflected test light, and a determining means that determines the presence or absence of clear paint based on the amount of test light received by the light receiver.

According to the configuration of the clear coating material detection device according to the present invention, the coated surface coated with the clear coating material is smooth, and the test light is not applied to the coated surface compared to the coated surface not coated with the clear coating material. Focusing on the fact that there is little scattering on the coated surface when irradiated, based on the amount of light received by the receiver, clear coating is applied when the amount of light received is large, while clear coating is applied when the amount of received light is low. It can be determined that the coating is not applied.

<Example> Next, an example of the present invention will be described in detail based on the drawings.

FIG. 1 is an overall front view of the clear coating) 4 detection device, and FIG. 2 is a schematic configuration diagram.

In these figures, reference numeral 1 denotes a trolley driven and driven by a traveling electric motor 2, and the support arm 3 made of square pipe can only slide, and the screw 4.
The fixing position can be adjusted by tightening the support arm 3, and a support plate 5 is connected to the support arm 3.

A screw shaft 6 and a guide rod 7 are attached to the support plate 5 so as to be able to slide in the vertical direction, and a mounting plate 8 is connected to the lower ends of the screw shaft 6 and guide rod 7. Optical fiber 9 for ultraviolet light and receiver 10
and is provided.

The optical fiber 9 for ultraviolet light contains mercury and xenon (Hg-
Xe) A light source 11 using a lamp is connected, and the optical fiber 9 for ultraviolet light and the light source 11 irradiate the coated surface of clear coating material such as clear paint or clear waterproofing agent with ultraviolet light as test light of a specific wavelength. ! 112 are configured.

The light receiver 10 is equipped with a filter 13 that cuts visible light other than the ultraviolet light reflected from the coating surface, and a lens 14 for ultraviolet light, and the light receiver 10 is equipped with A control unit 15 is connected to process the image data signal and convert it into an image data signal with a density corresponding to the amount of received light.
Furthermore, a monitor television 16 is connected to the control unit 15, which displays an image with a density according to the image data signal, so that it can be confirmed whether the clear coating material has been applied or not based on the density of the displayed image. It is configured.

Specifically, when a clear coating material is applied to the coated surface, the amount of ultraviolet light reflected from the coated surface and input to the light receiver 10, that is, the amount of received light increases, and the amount of ultraviolet light reflected on the coated surface increases.
On the other hand, if the clear coating material is not applied, the coloring paint is applied, but the outer surface is rough and reflects diffusely, reducing the amount of light received. The image displayed on the monitor TV I6 becomes white,
The presence or absence of clear coating material can be determined from the black and white of this image.

A configuration consisting of the control section 15 and the monitor television 16 is collectively referred to as a discriminating means.

A screw member 17 having an internal thread is externally fitted onto the screw shaft 6,
The screw member 17 is provided on the support plate 5 so as to be rotatable only, and the screw member 17 is provided with an electric motor 1 capable of forward and reverse rotation.
8 are interlocked and connected via a bevel gear type mechanism 19, and the ultraviolet light optical fiber 9 and the light receiver 10 can be driven up and down by driving the electric motor 18.

Guide rollers 20 are attached to the lateral side of the truck 1 at predetermined intervals in the front-rear direction of the vehicle body and come into contact with the vertical wall surface of the jetty around the boule P, maintaining an equal distance from the inner circumferential wall surface of the pool P. It is configured so that it can be driven while driving.

In the figure, 21 indicates a battery.

With the above configuration, at the completion stage of painting work, etc.
While driving around the pool P, the electric motor 18 is driven in forward and reverse directions at predetermined time intervals to connect the ultraviolet light optical fiber 9.
and the light receiver 10 are raised and lowered to irradiate the inner peripheral wall surface of the pool P with ultraviolet light in a zigzag-like trajectory R as shown in the operation explanatory diagram of FIG. You can monitor whether or not the image is displayed, and if a white image is displayed, you can double check in which areas the white image is displayed and accurately examine the areas where the clear coating material should be applied. This makes it possible to avoid paint leakage.

Next, the results of an experiment conducted using a clear paint for pool painting as a clear paint material will be explained.

Acrylic/urethane enamel paint for coloring (Evolo Pool II, manufactured by Izam Paint Co., Ltd.) was applied to the entire surface of the concrete test specimen, and half of it was coated with acrylic/urethane enamel paint for coloring.
A urethane-based clear paint (Evolo Pool I)/clear: manufactured by Isamu Paint Co., Ltd. is applied, and the specimen is irradiated with ultraviolet light from the ultraviolet light optical fiber 9 described above, and a monitor TV 1 is applied.
6 images were observed.

According to this, the entire image in the areas where clear paint is not applied becomes white, while the entire image becomes black in the areas where clear paint is applied, and from the density of the image,
It was clear that the presence or absence of clear paint could be accurately determined.

Infrared light can also be used as the test light.

Further, as a determination means, for example, the control I/roll section 1
In step 5, various configurations are possible, such as determining whether the amount of received light is equal to or greater than a set amount, and when the amount of received light is equal to or greater than the set amount, it is configured to notify the presence of clear paint by lighting a lamp or the like. Can be adopted.

When configuring a device for detecting the presence or absence of a clear waterproofing agent applied to a horizontal surface such as a rooftop floor, the above-mentioned support plate 5 is mounted on the trolley 1 in an upright position, and the ultraviolet light optical fiber 9 and The light receiver 107 may be constructed so that it can be driven back and forth in the horizontal direction.Furthermore, in this device, a small monitor TV 16 is used, and the monitor TV 16 is attached to the front of the helmet, and the light The irradiation device 12 may be attached to the upper part of the helmet, and the light receiver 10 and the control section 15 may also be attached integrally to the helmet, so that the presence or absence of the clear coating material can be detected while walking.

<Effects of the Invention> According to the clear coating material detection device of the present invention, at the stage when coating work is completed, test light is irradiated onto the surrounding wall surface of the pool, the floor surface of the rooftop, etc. By receiving the test light with the light receiver, it is possible to check whether the clear coating material has been applied using the discrimination means, and it is possible to effectively prevent forgetting to apply the clear coating material, and to prevent problems caused by paint leakage. This makes it possible to reliably avoid unnecessary repair work, which is economical, and makes it possible to provide a device that is extremely convenient in practice.

[Brief explanation of drawings]

The drawings show an embodiment of the clear coating material detection device according to the present invention, in which FIG. 1 is an overall front view, FIG. 2 is a schematic configuration diagram of main parts,
FIG. 3 is an explanatory diagram of the clear coating material detection operation. ]0... Light receiver 12... Light irradiator

Claims (2)

[Claims] (1) A light irradiator that irradiates a test light of a specific wavelength onto the coated surface, a light receiver that receives the test light reflected from the coated surface, and a clear light based on the amount of test light received by the light receiver. 1. A clear coating material detection device comprising: a determination means for determining the presence or absence of paint. (2) A clear coating material detection device, wherein the determining means according to claim (1) is constituted by a monitor television that converts and displays images in shading.