TH683B - Checking for defects in coating of plates - Google Patents

Abstract

Defects in slab glazes, in which the glaze covers the center of light scattering, may be detected by irradiating the glaze with polarized light. and examines the light coming out of the coating through an optical filter that eliminates the same polarizing light as the beam. The light is scattered by the scattering center and is passed through the filter while the mirrored light is reflected from the top surface of the coating. From the coating plate that is not completely covered or reflected by foreign objects attached to the coating will be completely filtered out. As a result, it is possible to detect defects by looking at the lowest intensity of the emitted radiation.

Claims (3)

1. Method for detecting abnormalities of coating on flat substrate. Which coated this color Including the center of scattering light as well This method consists of the following steps - determining electromagnetic radiation that is polarized onto a coating with a non-zero angle to the main flat portion of the plate. So that the radiation that falls on the plate revives The reflected rays are polarized intact, and the rays that fall into the scattered center are scattered as non-polarized scattered rays - transmission of reflected and scattered rays through one unit of the instrument to separate the reflected radiation - receiving. Emitted scattered radiation - radiation analysis obtained to detect the presence of abnormalities in paint coatings by detecting the minimum intensity of the emitted radiation 2. Method which is entitled in item 1 radiation. Reflex refers to the reflected rays that are eliminated by passing through the transmitted rays and that are reflected through the polarizing filter, which has the axis through the most perpendicular to the axis of the reflected radiation electric field vector. 3. Method to be claimed as in Article 1, the term of the radiographic determination procedure referred to in the predetermined form of radiation, paint sweep, coating with polarized radiation. Clause 3. The term of the analytical procedure mentioned covers the measurement of the radiated radiation intensity and the detection of defects by measuring the intermittent changes in the intensity at the time of coating. The color is projected to be swept away. 5. Method of claim in item 4, the term of the transmission layer covers the distribution of the nest. 6. Method for claiming rights in Article 5. The term form is referred to is spiral form 7. Method for claiming rights in Article 5. The term of form referred to is form Television-type sweeping 8. Method for claiming rights in Article 5. The term of a form referred to is a radial sweeping pattern 9. Method for which one of the rights in Clause 6 is applied , 7 or 8 words floor plate A slab with uneven parts Shining light on that part will cause constant change. Of the measured intensity only In the analytical stage mentioned 1 0. Methods claimed in Article 3, the term for the radiographic determination procedure mentioned, covers radiation on laser paint coating and the transmission stage referred to as radiation filtration. Obtained to allow radiation only in the frequency band of the laser light mentioned to pass through only 1 1. The method of claim in clause 1. The term for the radiation determination consists of irradiation on the coating mentioned with magnetic radiation. The most continuous and most consistent polarization of electricity 1 2. Method to be claimed in Article 11 The term of the analysis procedure referred to consists of the introduction of radiation transmitted into the camcorder 1 3. Method The claim in Article 12, the term analysis stage, extends further to the measurement of the signal emitted by the camcorder mentioned for the detection of sudden changes in the video signal level. 1 4. Method to be claimed in Article 1, the term for the radiation determination procedure mentioned in the term covers the irradiation on the paint coating mentioned with the polarized electromagnetic radiation. Mentioned with a fall angle, which causes the reflected ray to be reflected with a certain angle of reflection. And the term "lower transmission step" covers the transmission of the mentioned radiation, which is reflected by the reflecting angle mentioned through the filter mentioned to eliminate the reflected radiation. That electromagnetic radiation is visible light to the eye 1 6. Method of claim in item 1, the term for the procedure for determining the radiation mentioned to cover the irradiation on the dirt on the paint coating. Mentioned so that the radiation falls on the said dirt To be reflected in the same polarization And the term "transmission step" covers the transmission of the radiation reflected from the impurities through a filter for eliminating the reflection rays, which removes the radiation that is reflected from the impurities mentioned. Hereby holds the rights in item 1 that the term polarized electromagnetic radiation is indicated on the paint coating perpendicular to the flattened part in principle.1 8. Apparatus for detecting defects having It is in the color glaze on the slab mainly flattened, the coating covers the center of light scattering. The equipment described contains a method used for directing electromagnetic radiation that is polarized onto paint coatings. With a non-zero angle with the main smooth part So that the rays that fall on the slab are reflected to have the same polarization And the radiation that falls on the scattering center is scattered, which makes the scattering radiation non-polarized. The way in which fever removes the polarized reflected radiation from the reflected radiation. And scattered radiation as it is transmitted non-polarized scattered radiation Method used to receive the transmitted scattered radiation Method for analyzing the received radiation to detect defects present in the glaze Color by measuring the minimum intensity of the transmitted radiation 1 9. Apparatus Eligible for Article 18 The term “method for eliminating reflected and polarized radiation” is a filter. Polarizing Which has the axis through the most perpendicular to the axis of the electric field vector of the reflected polarized radiation. 2 0. Apparatus requested in accordance with Article 18, the term of the pathway for the determination of the radiation mentioned shall be covered. Pathways using a predetermined optical sweep coating with polarized radiation. 2. 1. Apparatus Eligible for Article 20, the term "Trajectory of Analysis" mentioned above. It measures the intensity of the transmitted radiation and detects existing flaws by measuring the continuous change in intensity. Measured while the paint coating was beamed. 2. 2. Apparatus requesting rights in Article 20, the term of irradiation path mentioned comprehensive. The path used to irradiate the paint with laser light. And the apparatus mentioned covers a path used to filter the radiation received by passing only the radiation in the frequency band close to the frequency of the laser light mentioned. 2. Apparatus that is used to radiate radiation received in accordance with 2. 4. Apparatus sought to hold rights in Article 20. This is a telephone sweeping pattern 2. 6. The device requested for rights in item 20. The term form is a radial beam projection pattern 2. 7. In which clause is the equipment sought? In one of Article 24, 25, or 26, the term floor plate refers to a slab with an uneven segment, the light beam on that part only causes a continuous change in intensity, as measured by an analytical path. 2 8. Apparatus Eligible for Article 18, the term "Radiation Prescribing Path" mentioned, is the most continuous and most consistent irradiation onto paint coatings with provisional electromagnetic radiation. 2 9. Equipment requested to be entitled in Article 28, the term "analytical path" The described methods consist of cameras, video cameras, 3 0. Equipment to be claimed in Article 29. The method used to measure the signal emitted by the camcorder mentioned for sudden changes in the video signal level as a sign of the mentioned defect 3. 1. Apparatus sought to claim rights in Article 18, the term "radiographic path" mentioned, is the irradiation on the coating mentioned with a falling angle which causes the mentioned reflected radiation which Was reflected by the reflections and the words The pathway to eliminate the polarized reflection is the one directed at the reflecting angle mentioned 3. 2. The apparatus requested to be entitled in Article 18, the term designation method referred to is the irradiation on the colored coating mentioned by visible light. 3. The apparatus requested for the rights in Article 17, the term electromagnetic radiation defining path, is defined that the radiation falls on the shade as perpendicular to the flattened part mainly.