JP3180837U - Surface defect inspection device for flat base plates of ceramic outer wall materials - Google Patents

Abstract

【Task】
When the inspector visually inspects the irregularities on the surface of the original plate such as the original plate, the position of the surface defects can be observed as clearer irregularities, reducing the burden on the inspector, and as wide an area as possible Provided is a surface defect inspection apparatus which can be inspected.
[Solution]
In the surface inspection process of laminating a plurality of flat original plates 3 of ceramic outer wall materials, a light source 4 is disposed outside one end face of the flat original plate 3 to be inspected, and light emitted from the light source 4 is emitted from the flat original plate 3. A surface defect inspection apparatus comprising: a position adjusting unit 8 that adjusts a position of a height irradiated by the light source so that the incident angle 5 and the reflection angle 6 irradiated on the surface are fixed, and is movable up and down. 1.
[Selection] Figure 3

Description

The present invention relates to an apparatus for inspecting a surface defect of a flat original plate of a ceramic outer wall material.

Conventionally, cement ceramic boards for ceramic outer wall materials have an uneven pattern on the mold surface made of a raw material mixture mainly composed of an inorganic hydraulic material such as cement and a wood reinforcing material such as wood chips, wood wool, wood fiber and wood pulp. The dry mat or the like is sprayed on the mold plate to form the dry mat, and the dry mat is compressed together with the mold plate so that the uneven pattern of the template is transferred to the surface of the dry mat and cured and cured. There is a dry method. Further, the raw material mixture is dispersed in water to form a slurry, and the slurry is formed and dewatered on a net or felt to form a wet mat, and a mold plate having a concavo-convex pattern on the wet mat is pressed onto the wet mat. There is a wet method in which the uneven pattern of the template is embossed on the wet mat surface, and then the wet mat is cured and cured. Moreover, in the case of a flat pattern, a flat template is pressed and the wet mat surface becomes a flat pattern. Since wet mats have a dense structure, there is a disadvantage that it is difficult to form a deep three-dimensional uneven pattern. On the other hand, because the wet mat surface is pressed against the surface of the formed wet mat, embossing is performed, so that the template is in principle one line. There is an advantage that it is only necessary to prepare one for each and the productivity is good. For details, see Japanese Patent No. 3258864.

Moreover, in order to cure and cure (primary curing) the uncured building board that is the semi-dry mat or wet mat, a predetermined number (usually 3 or 4) of the uncured material is stacked on a pallet or carriage, A predetermined number of the uncured material is stacked on the spacer, and the uncured material thus stacked is left in the curing chamber at a predetermined temperature and a predetermined humidity for a predetermined time. In the extrusion method, the extruded products are put one by one in a tray and stacked, and cured and cured in the same manner. For details, see Japanese Patent No. 3880106.

The ceramic outer wall material cement board is usually referred to as an original board before coating. The product after painting the original plate is distinguished as a painted plate. The present invention refers to an uncured original plate before applying this coating, and particularly refers to an uncured original plate having a flat surface. When producing an original plate having a flat surface by the wet method, the flat template is attached to a press and pressed against the original plate. Since this flat template is made of a resin, when cracks or chips occur, the surface of the original plate leaves marks of cracks and chips and becomes uneven. Further, in the wet method, since it is wound around a making roll to form an original plate, the original plate scraps adhere to the original plate surface due to the impact of the wire cut to be divided. For details, refer to Japanese Patent No. 3222047. In addition, vinyl and plastic pieces may be mixed in the waste paper of the raw material of the original plate. In addition, there is a problem that the sealing piece of the ceramic outer wall material recovered from the product remains and adheres to the resin of the flat template.

In order to improve such problems, for example, in Japanese Utility Model Laid-Open No. 5-14907, the presence or absence of irregularities on the surface to be measured is prevented from being overlooked by the inspector, and a light sensing device such as a CCD camera and reflected light are used. In order to easily obtain the presence or absence of unevenness on the surface, light from the light source that is made of a material that reflects light and light from the light source that is reflected from the surface to be measured are reflected almost in the incident direction. It is characterized by comprising a reflecting surface and a light-sensing device directed toward the surface to be measured and oriented in a direction that does not coincide with the light reflecting direction in a state where no irregular reflection occurs on the surface to be measured. However, the painted surface, the metal surface, and the resin surface are easy to reflect, so this method seems to be good, but the raw surface of the ceramic industry outer wall material is rougher than the metal particles and contains moisture. Since reflected light is absorbed, it is difficult to detect surface abnormalities.

In JP 2012-13444 A, an appearance inspection apparatus includes a light source, a visible light detector, an ultraviolet light detector, and a control device for inspecting the color tone and gloss of a coated substrate. However, since it is an inspection of the surface painted on the original ceramic wall material, the surface coating is stable. Even with this method, the surface of the original plate of the ceramic outer wall material has rough cement particles and contains moisture, so that the reflected light is absorbed, so that it is difficult to detect surface abnormalities.

5-14907 JP 2012-13444 A

In the present invention, visual inspection is performed using an original plate of ceramic outer wall material, but the original plate may find a surface defect in a subsequent manufacturing process, and a defective product may be generated. Further, only defects near the area where the light source can be seen can be observed, and defects located in areas where the light source is difficult to see cannot be found. Therefore, in the visual inspection, if the area of the original plate to be inspected is large, the inspector cannot observe the entire area of the original plate at a time, and observes the area of the original plate on the near side as viewed from the inspector. In the case of observing the area of the original plate on the back side, the inspector needs to inspect by changing the height of the eyes and the standing position, and the burden on the inspector is large. It is necessary to facilitate and speed up the detection of surface defects, reduce the burden on the inspector, and shorten the time.

In addition, if the position of the fluorescent lamp that is the light source is not properly arranged, an image such as irregularities indicating the position of the surface defect may not be sufficiently observed. It is easy to overlook surface defects, and there may be individual differences in the visual results. In addition, since the light from the fluorescent lamp used as the light source is scattered light, the light after being reflected on the original plate surface is also scattered in all directions, so just looking at the fluorescent lamp image on the original plate surface, In some cases, defects were difficult to detect.

Therefore, the present invention has been made in view of the above circumstances, and in the case where the inspector visually inspects the unevenness of the defects existing on the surface of the original plate such as the original plate, the position of the surface defect is clearer. It is an object of the present invention to provide a surface defect inspection apparatus that can be observed as irregularities, can reduce the burden on an inspector, and can inspect a wide area as much as possible.

In order to achieve the above object, the present invention provides a light source disposed outside one end face of the flat original plate to be inspected in a surface inspection process for laminating a plurality of flat original plates of ceramic outer wall materials, and is irradiated from the light source. And a position adjusting unit that adjusts the height position irradiated by the light source to be movable up and down by arranging the incident angle and the reflection angle irradiated on the surface of the flat original plate at a constant angle. Surface defect inspection device. Furthermore, it is preferable that the angle of light emitted from the light source is arranged so as to have an incident angle and a reflection angle of 70 ° to 80 ° with respect to the surface on which a plurality of flat original plates are stacked. Moreover, it is more preferable that the position adjusting unit adjusts the position of the height irradiated by the light source so as to move up and down each time a plurality of the flat original plates are stacked.

According to the inspection apparatus of the present invention, in the step of laminating a plurality of ceramic outer wall materials, a light source is arranged from the outer end surface of the flat original plate, and an incident angle and a reflection angle of incident light are 70 ° to 80 °. Since it is within the range, the shaded part of the unevenness is clear. For this reason, when there is a defect, the unevenness of the flat original plate is found quickly. Each time a plurality of flat original plates are stacked, the position of the height to be irradiated manually and automatically can be adjusted to be movable up and down, so that it is easy to find defects. Further, since the light source can be finely adjusted to move up and down depending on the height of the examiner's back, there is an effect that it is easier to find.

It is sectional drawing in which the number of lamination | stacking of the flat original plate of embodiment of this invention is a low position. It is sectional drawing of the lamination | stacking number of flat original plates of embodiment of this invention in a middle position. It is sectional drawing of the lamination | stacking number of flat original plates of embodiment of this invention in a high position. It is a schematic diagram of the uneven | corrugated shade part with respect to the flat original plate in embodiment of this invention. It is a schematic diagram of the uneven | corrugated shadow part with respect to the flat original plate in conventional embodiment. It is the schematic of the manufacturing apparatus line of implementation of this invention.

Embodiments of the present invention will be described below with reference to the drawings. FIG. 6 is a schematic view of the entire wet manufacturing apparatus line 2. From the flow box 21 mixed with the raw materials, water is sucked from below with the slurry mat paper making 22, and 3 to 4 sheets are stacked with the making roll 23, and then pressed 24. In this invention, it is the surface defect inspection apparatus 1 of the lamination | stacking state 26 in the case of laminating | stacking the original plate 25 after a press. Then, it passes through the steam curing 27 and becomes a cured original plate 28.

FIG. 1 shows a case where the number of sheets in the stacked state 26 is low and the initial position is low. The light source 4 shows an incident angle 5 and a reflection angle 6 at which light is irradiated and reflected on the flat original plate surface 3. It is sectional drawing of the low position which showed typically the inspector 9 observing the reflected light. Since it is in the low position, the inspector 9 may be bent slightly, and the inspector's line of sight 91 may be lowered for inspection.

FIG. 2 shows a case where the stacked state 26 is in the middle position of 12 sheets. In this case, the plate 31 is sandwiched every four sheets. Similarly, the light source 4 also shows a case where the inspector 9 raises it moderately by the position adjustment unit 8 at hand. Also in this case, the light having the reflection angle 6 incident at the same incident angle 5 and reflected at the same angle on the surface of the original plate is reflected by the inspector 9 at the same angle.

FIG. 3 shows a case where the stacked state 26 is a high position of 24 sheets. Also in this case, the light source 4 is reflected on the surface of the flat original plate 3 at the same incident angle 5 and reflection angle 6. The position adjustment unit 8 allows the inspector 9 to finely adjust the height of variation. In the case of the inspector 9a, the light source 4 is finely adjusted and lowered to the light source 4a. Thereby, the incident angle is 5a, and the reflection angle is also the same reflection angle 6a. Therefore, the inspector 9 or 9a adjusts the height of the spine so that the light source 4 or 4a can be moved up and down. It may be manual or may be set automatically every time it is stacked. The vertical movement can be set appropriately.

FIG. 4 schematically shows the state of the flat original plate convex portion 32 and the flat original plate concave portion 33 in the shaded portion of the unevenness of the light source 4 of the present invention on the surface of the flat original plate 3. As can be seen from this figure, since the incident angle is low, the shadow portion 10 is long and easy to find.
This is because when the incident angle is 70 to 80 °, most of the region where the light does not hit the concave 33 is reflected, and the reflected light of the flat original plate concave portion 33 is concentrated at the tip portion, and the shadow with the flat original plate concave portion 33 is Clearly. Moreover, since the shadow of the flat original plate convex part 32 also has an incident angle 5 of 70 to 80 °, the shadow becomes long, so that it is easy to find.
In the case of the incident angle 5 of FIG. 4, it is 75 degrees, and the shadow part 10 becomes considerably long and clear. For this reason, the shadow part 10 can also be identified from the line of sight 91 of the inspector 9.

As shown in FIG. 5, in the conventional case, since the incident angle 5 of light is about 45 °, the shadow portion 10 is difficult to appear and is difficult to find. Since there is no significant difference in the amount of reflected light at the reflection angle 6 between the flat original plate concave portion 33 and the flat original plate convex portion 32, the shadow portion 10 does not become clear and looks dull. This makes it difficult to find. Since the incident angle 5 in FIG. 5 is around 45 °, there is no difference in the amount of light reflected by the shadow portion 10, so the image is considerably blurred. For this reason, the shadow part 10 cannot be identified from the line of sight 91 of the examiner 9.

The light source 4 is preferably a halogen lamp. Halogen bulbs are characterized by being very small compared to silica bulbs, clear bulbs, and bulb-type fluorescent lamps. Since the lamp is small, the lighting fixture can be made small. In addition, the brightness is very high, and it has a light property that can be said to be a point light source. As a spotlight or downlight, the light can have directivity. Furthermore, if the light source 4 tilts the forward tilt angle and adjusts the incident angle to 70 to 80 °, the vertical movement is stable. If it is not tilted forward, it will go straight with the examiner's line of sight 91, which will hinder the examination. In the fluorescent lamp, since the light is diffused, it is difficult to diffuse the light so that the light has directivity, and the shadow portion 10 of the shadow is difficult to understand.

The incident angle 5 is an angle formed with respect to the normal 7 set at the incident point. The normal is vertical. The reflection angle 6 is reflected at the same angle as the incident angle 5. The angle of incidence 5 is preferably in the range of 70 ° to 80 °, and the shaded portion 10 is particularly good when the angle is around 75 °. This is because the incident angle 5 is 75 ° in the case of FIG. 4, and the shadow portion 10 becomes considerably long and clear. For this reason, the shadow part 10 can also be identified from the line of sight 91 of the inspector 9. Further, since the light source can be finely adjusted to move up and down depending on the height of each person of the inspector 9, it is easier to find.

Therefore, in the laminated state original plate 26 of the ceramic industry outer wall material of the present invention, the area that the inspector 9 can observe at a time is wider than before, and the surface defect can be observed as a clear shadow. Since it is easy to find defects and there are few oversights, it is considered that the detection operation is completed in a shorter time than conventional. Therefore, even if a visual inspection is included in the flow of the laminated state original plate 26 of the ceramic outer wall material, it is possible to prevent the manufacturing process from staying in this inspection, and to prevent the subsequent steps from being performed with the original plate defective product. In addition, it is possible to reduce the occurrence of defective original plates.

DESCRIPTION OF SYMBOLS 1 Surface defect inspection apparatus 2 Manufacturing apparatus line 21 Flow box 22 Slurry paper making 23 Making roll 24 Press 25 Pressed original plate 26 Laminated state original plate 27 Curing room 28 Cured original plate 3 Flat original plate
31 Plate 32 Flat original plate convex part 33 Flat original plate recessed part 4 4a Light source 5 5a Incident angle 6 6a Reflection angle 7 Normal 8 Position adjustment part 9 9a Examiner 91 Examiner's line of sight 10 Shadow part

In order to achieve the above object, the present invention provides a surface defect inspection apparatus for laminating a plurality of flat original plates of ceramic outer wall materials, wherein a halogen lamp light source is disposed outside one end face of the flat original plate to be inspected, and the halogen light emitted from the lamp light source, said anteversion of the halogen lamp light source is inclined to illuminate the flat original plate surface, arranged so as to adjust the incident angle, the height of the irradiation of the halogen lamp light source A surface defect inspection apparatus comprising a position adjustment unit for adjusting a position to be movable up and down. Furthermore, it is preferable that the angle of light emitted from the halogen lamp light source is arranged so as to have an incident angle and a reflection angle of 70 ° to 80 ° with respect to a surface on which a plurality of flat original plates are stacked. More preferably, the position adjusting unit finely adjusts the position of the height irradiated by the halogen lamp light source so as to move up and down each time a plurality of flat original plates are stacked.

To achieve the above object, the present invention provides a surface defect inspection equipment for laminating a plurality of flat original plate of ceramic siding, with teeth Rogenranpu source, light emitted from the halogen lamp light source, the flat with the angle adjustment unit Ru is inclined forward inclination angle of the halogen lamp light source to irradiate the original sheet surface, further comprising a position adjusting section for adjusting a position of the height of the irradiation of the halogen lamp light source vertically movable A surface defect inspection apparatus characterized by that. Furthermore, the prior SL angular adjusting unit, with respect to the flat original plate with a plurality of laminated surfaces, characterized by that you can adjust to have reflected and incident angles of 70 ° to 80 °, also, the position adjustment parts, the flat original plate for each of stacked, characterized in that it is vertically movable on the adjusting pollock so that constitutes the position of the height of the irradiation of the halogen lamp light source.

Claims (3)

In the surface inspection process of laminating a plurality of flat original plates of ceramic outer wall materials, a light source is arranged outside one end face of the flat original plate to be inspected, and the light irradiated from the light source is applied to the flat original plate surface An apparatus for inspecting a surface defect, comprising: a position adjusting unit that arranges an incident angle and a reflection angle at a constant angle and adjusts a position of a height irradiated by the light source so as to be movable up and down. The angle of light emitted from the light source is relative to the surface on which a plurality of flat original plates are stacked.
The surface defect inspection apparatus according to claim 1, wherein the surface defect inspection apparatus is arranged to have an incident angle and a reflection angle of 70 ° to 80 °. 2. The surface defect inspection apparatus according to claim 1, wherein the position adjustment unit adjusts a position of a height irradiated by the light source so as to be movable up and down each time a plurality of the flat original plates are stacked.

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