JP2006322901A - Surface shape detection method and painting method for building panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a surface shape detection method capable of easily and precisely detecting the surface shape of a building panel, and to provide a painting method for performing high precision painting on the surface of the building panel based on the detection result of the surface shape detection method. <P>SOLUTION: The building panel 1 or a laser displacement sensor 4 for measuring the surface level of the building panel 1 is relatively moved in the direction between a pair of facing ends of the building panel 1. The surface level of the building panel 1 is measured on a straight line spanning between the pair of facing ends of the building panel 1 by the laser displacement sensor 4. A joint groove position specifying means 5 obtains the position of each joint groove 2 between ends of the facing building panels 1, on the basis of measurement data D by the laser displacement sensor 4. A joint inter-groove distance detection means 6 detects each distance between respective adjacent joint grooves 2 on the basis of the joint groove position data. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a method for detecting the surface shape of a building panel and a method for painting a building panel.

  Conventionally, in order to improve the appearance of a building, the surface of a building panel used for an exterior material or the like has been formed with a surface design by applying an uneven shape with a press or the like. Yes. In manufacturing such a building panel, detection of the surface shape of the building panel is indispensable for quality inspection for confirming an accurate uneven shape or for performing predetermined coating after applying the uneven shape. As a method for detecting the surface shape of the building panel, as disclosed in Patent Document 1, the surface shape of the building panel is photographed to obtain imaging data, and the imaging data is compared with preset sample image data to obtain the surface shape. The method of detecting is common. However, in this surface shape detection method, the amount of image data to be obtained is large, and it takes time for processing such as comparison with sample image data, or the image data obtained by the illumination light hitting the surface of the building panel As a result, there was a variation in the thickness, and good accuracy could not be ensured.

  In particular, in recent years, the surface design applied to the surface of an architectural panel tends to become more complex year by year due to the advanced needs for the design. Specifically, for example, there is a tendency to favor the appearance of a building to a natural appearance by eliminating a regular artificial appearance as much as possible, and this natural appearance is given to the building. For example, a plurality of joint grooves and pattern protrusions are alternately arranged in the longitudinal direction of the long panel, and the length dimensions in the longitudinal direction of the two or more pattern protrusions are different. The uneven surface pattern is continuously and repeatedly applied to the surface of the long panel, and this long panel is cut and coated at an arbitrary position in the longitudinal direction to form an architectural panel having a different surface design. This can be done by arbitrarily combining building panels having designs.

  Such a building panel is formed by cutting a long panel with a concavo-convex pattern at an arbitrary position in the longitudinal direction, so the surface shape is different for each building panel. The plurality of joint grooves and the pattern protrusions are alternately arranged between a pair of opposing ends of the building panel, and the two or more pattern protrusions of the plurality of pattern protrusions Since it has uneven patterns formed so that the length dimension in the direction between a pair of opposite ends of the building panel is different, the painting on the surface of the building panel is started. If the position can be matched with the surface shape of the building panel, it is possible to perform with good productivity using a coating apparatus that applies a coating pattern corresponding to the uneven pattern.

However, in order to match the coating start position on the building panel with the surface shape of the building panel, it is essential to detect the surface shape of the building panel with high accuracy. Since it is difficult to detect the shape, it is impossible to ensure a highly accurate finish of the coating. In addition, although this building panel has a concavo-convex pattern in common, since the positional relationship between the cut end face and the concavo-convex pattern is irrelevant, the surface shape of the building panel is determined using the surface shape detection method disclosed in Patent Document 1. When trying to detect, it is necessary to shift the shooting point in order to obtain imaging data to be compared with the sample image data for each building panel, which is troublesome and reduces detection accuracy in relation to lighting. There is also.
JP 2005-95747 A

  The present invention was made in view of the above-described conventional problems, and a first object of the present invention is to provide a surface shape detection method that can easily and accurately detect the surface shape of a building panel. A second problem is to provide a coating method for performing high-precision coating on the surface of a building panel based on the detection result of the detection method.

  In order to solve the above-mentioned problem, the method for detecting the surface shape of a building panel according to claim 1 of the present invention has a plurality of joint grooves 2 and pattern protrusions 3 alternately between a pair of opposite ends of the building panel 1. The two or more pattern projections 3 of the plurality of pattern projections 3 are formed to have different length dimensions in the direction between a pair of opposing ends of the building panel 1. A method for detecting the surface shape of a building panel 1 having a concavo-convex pattern on the surface thereof, in order to measure the surface level of the building panel 1 or the building panel 1 in the direction between a pair of opposing ends of the building panel 1. The laser displacement sensor 4 is relatively moved, and the surface level of the building panel 1 is measured in a straight line across a pair of opposite ends of the building panel 1 by the laser displacement sensor 4. The above-mentioned label The position of each joint groove 2 between the ends of the opposing building panel 1 is obtained based on the measurement data D by the displacement sensor 4, and the joint groove distance detection means 6 adjoins based on the joint groove position data. The distance between each joint groove 2 is detected, respectively.

  According to this, since the surface level of the building panel 1 is measured in a straight line across the pair of opposite ends of the building panel 1 by the laser displacement sensor 4, the measurement of the obtained laser displacement sensor 4 is performed. The data D has a smaller data amount than the conventional imaging data and has no variation due to the lighting condition, so that the error can be reduced, and the measurement data obtained by the laser displacement sensor 4 by the joint groove position specifying means 5 is obtained. The position of each joint groove 2 between the ends of the opposing building panel 1 is obtained based on D, and the distance between adjacent joint grooves 2 based on the joint groove position data by the joint groove distance detection means 6. Since the surface shape of the building panel 1 is detected by calculating each of the values, the surface shape of the building panel 1 can be detected easily and with high accuracy. It is. In particular, a plurality of joint grooves 2 and pattern protrusions 3 are alternately disposed between a pair of opposed end portions of the building panel 1, and two or more pattern protrusions out of the plurality of pattern protrusions 3. A plurality of building panels 1 having different concavo-convex pattern ranges on the surface thereof, having a concavo-convex pattern having different length dimensions in the direction between a pair of opposing ends of the building panel 1 in the portion 3. Even in the case where the surface shape of the building is sequentially detected, the detected surface shape data of the building panel 1 and the uneven pattern are compared based on the position of the joint groove 2 and the distance between the joint grooves 2 respectively. Thus, the range of the uneven pattern applied to the building panel 1 can be easily recognized, and the subsequent quality inspection and painting can be performed with high accuracy.

  Moreover, the surface shape detection method of the building panel which concerns on Claim 2 sets the reference | standard height position H to the arbitrary height position in the joint groove 2 of the construction panel 1 by the joint groove position specific | specification means 5 in Claim 1. Then, the measurement data D obtained by measuring the surface level across the pair of opposite ends of the building panel 1 by the laser displacement sensor 4 and the reference height position H are compared, and the reference height position A position where the measurement data D by the laser displacement sensor 4 that has exceeded H falls below the reference height position H is defined as a groove start end position a, and continues from the groove start end position a to below the reference height position H. A location where the measurement data D exceeds the reference height position H is defined as a groove end position b, a distance between the groove start end position a and the groove end position b is defined as a provisional groove width A, and the provisional groove width A is defined as the reference height. Reference groove set in advance corresponding to position H When it is within the allowable range of A ′, the concave portion of the building panel 1 including the provisional groove width A is determined as the joint groove 2, and the reference height position in the concave portion of the building panel 1 determined as the joint groove 2 The cross-sectional area B of the part recessed below H is obtained, and the center of gravity position C of the cross-sectional area B is obtained, and the joint groove adjacent to each other with the center of gravity position C as a reference by the joint groove distance detection means 6. Each of the distances between the two is specified.

  According to this, the joint groove position specifying means 5 can accurately determine the joint groove 2 from among a number of concave portions of the building panel 1 with the provisional groove width A based on the reference height position H as a parameter. By determining the center of gravity C of the cross-sectional area B of the part recessed below the reference height position H of the concave part of the building panel 1 determined as the joint groove 2, the groove of the concave part is determined as the joint groove 2 position. Even if there is a manufacturing error in the shape, the influence of the manufacturing error can be eliminated as much as possible and the exact position of the joint groove 2 can be specified. By using the position of the ditches 2 as a reference, the distances between the adjacent joint ditches 2 can be accurately specified, that is, the detection accuracy of the surface shape of the building panel 1 is improved. is there.

  Moreover, the surface shape detection method of the building panel which concerns on Claim 3 sets the reference | standard height position H to the arbitrary height position in the joint groove 2 of the construction panel 1 by the joint groove position specific | specification means 5 in Claim 1. Then, the measurement data D obtained by measuring the surface level across the pair of opposite ends of the building panel 1 by the laser displacement sensor 4 and the reference height position H are compared, and the reference height position A position where the measurement data D by the laser displacement sensor 4 that has exceeded H falls below the reference height position H is defined as a groove start end position a, and continues from the groove start end position a to below the reference height position H. The location where the measurement data D exceeds the reference height position H is defined as the groove end position b, the interval between the groove start end position a and the groove end position b is defined as the provisional groove width A, and the reference height position within the provisional groove width A. Above measurement below H and reference height position H The provisional groove depth E is defined as the difference from the data D, and the provisional cross-sectional area B of the portion recessed below the reference height position H in the concave portion of the building panel 1 is obtained. When the height E and the provisional cross-sectional area B are within the ranges of the reference groove width A ′, the reference groove depth E ′, and the reference cross-sectional area B ′ set in advance corresponding to the reference height position H, respectively. Only, the concave part of the building panel 1 including the provisional groove width A is determined as the joint groove 2, and the center of gravity C of the provisional cross-sectional area B in the concave part of the building panel 1 determined as the joint groove 2 is obtained. The distance between the joint grooves 2 is specified by the inter-groove distance detection means 6 with the center of gravity position C as a reference, respectively.

  According to this, by the joint groove position specifying means 5, the joint groove is selected from among the concave portions of the building panel 1 having a number of provisional groove width A, provisional groove depth E and provisional cross-sectional area B based on the reference height position H as parameters. 2 can be accurately determined, and the center of gravity C of the cross-sectional area B of the part recessed below the reference height position H of the concave part of the building panel 1 determined as the joint groove 2 is By determining the position, even if there is a manufacturing error in the groove shape of the concave portion, it is possible to specify the exact position of the joint groove 2 by eliminating the influence of the manufacturing error as much as possible, and between the joint grooves The distance between the adjacent joint grooves 2 can be accurately specified by the distance detection means 6 by using the obtained reference position of the joint groove 2 as a reference, that is, the surface of the building panel 1. Improved shape detection accuracy And is're.

  Further, in the method for painting the building panel 1 according to claim 4, a plurality of joint grooves 2 and pattern protrusions 3 are alternately arranged in the longitudinal direction of the long panel, and two or more pattern protrusions 3 are provided. On the surface of the building panel 1 formed by cutting a long panel formed by continuously and repeatedly applying the uneven pattern formed so that the length dimension in the longitudinal direction is different at an arbitrary position in the longitudinal direction. The coating method of the building panel 1 is to apply a predetermined coating using the coating device 9 provided with the coating means 10 for coating with the coating pattern corresponding to the uneven pattern, with the cut end face in the traveling direction. Any one of claims 1 to 3, wherein the surface level of the building panel 1 is measured by the laser displacement sensor 4 in the conveying direction before the building panel 1 conveyed toward the coating apparatus 9 is carried in. Surface shape inspection Using the method, surface shape data based on the position of each joint groove 2 in the conveyance direction of the building panel 1 and the distance between adjacent joint grooves 2 is detected, and the difference detection unit 11 provided in the coating apparatus 9 The surface shape data obtained by the surface shape detection method is compared with the paint pattern data, and the position of the cutting end surface of the building panel 1 in the paint pattern is specified to determine the uneven pattern on the surface of the building panel 1 and the paint pattern. The initial position adjustment unit 12 provided in the coating apparatus 9 detects the shift width in the transport direction of the sheet and shifts the shift width detected by the difference detection unit 11 to set the coating start position of the coating pattern of the coating means 10. Then, the coating means 10 performs coating on the surface of the building panel 1 from the coating pattern at the coating start position set by the initial position adjusting unit 12.

  According to this, by detecting the surface shape of the building panel 1 by the surface shape detection method according to any one of claims 1 to 3 before being carried into the coating apparatus 9, each adjacent eye with high accuracy is detected. The respective distance data between the grabens 2 can be obtained, and the difference detection unit 11 obtains the distance data between the adjacent joint grooves 2 with high accuracy and the paint pattern of the painting means 10. The distance data between the joint grooves 2 is compared, the position of the cut surface of the building panel 1 in the painting pattern is specified, and the deviation width in the conveying direction between the uneven pattern on the surface of the building panel 1 and the painting pattern is determined. Then, the initial position adjustment unit 12 sets the coating start position of the coating pattern of the coating unit 10 by shifting the deviation width detected by the difference detection unit 11. By applying the coating to the surface of the building panel 1 from the coating pattern at the coating start position set by the initial position adjusting unit 12, high-precision coating according to the uneven pattern on the surface of the building panel 1 The finish could be secured.

  The present invention can detect the surface shape of a building panel easily and with high accuracy, and has an advantage that quality inspection and painting performed thereafter can be performed with high accuracy. In particular, when painting with a coating pattern corresponding to the uneven pattern, it is possible to set the painting start position of the painting pattern according to the surface shape of the building panel based on the accurate detection data of the surface shape of the building panel. Therefore, there is an advantage that the coating can be performed with high accuracy.

  Hereinafter, the present invention will be described based on embodiments shown in the accompanying drawings.

  As shown in FIG. 1A, the building panel 1 of this example is a ceramic-based (cement-based) building panel 1 used for building exterior materials, bathroom inner walls, interior materials, etc., and is used for extrusion molding and papermaking. An uneven pattern consisting of joint grooves 2 and pattern protrusions 3 is repeatedly applied in the longitudinal direction on the surface of a long panel as an original plate manufactured by a roller press or a press press. It is formed by cutting at an arbitrary position in the longitudinal direction. In the top view, the concavo-convex pattern is formed by arranging a plurality of block-shaped pattern projections 3 having different sizes divided by the joint grooves 2, but in the vertical cross section in the longitudinal direction of the long panel, A plurality of joint grooves 2 and pattern protrusions 3 are alternately arranged, and the two or more pattern protrusions 3 have an uneven shape in which the length in the longitudinal direction is different. More specifically, a pattern with fine irregularities is formed on the pattern protrusion 3. That is, the building panel 1 is formed by being cut at an arbitrary position in the longitudinal direction of the long panel, so that an arbitrary range of shapes of repeated concavo-convex patterns is formed on the surface. In addition, in the vertical cross section between a pair of opposed end faces of the building panel 1, the plurality of joint grooves 2 and the pattern protrusions 3 are alternately arranged, and two or more of the plurality of pattern protrusions 3 An uneven shape is formed such that the length dimension in the direction between the pair of cut end faces facing each other of the building panel 1 in the pattern protrusion 3 is different.

  In this ceramic building panel 1, the uneven pattern formed on the semi-cured long panel is likely to cause a manufacturing error, and then the quality of checking whether the uneven pattern is formed according to the rated dimension. It is sent to the inspection process and the painting process where the surface is painted and finished, but in any process, the detection data of the surface shape of the building panel 1 is necessary. In this example, the building panel is as follows. 1 surface shape is detected.

  In order to detect the surface shape of the building panel 1, a surface shape detection device 7 as shown in FIG. 3 is used. The surface shape detection device 7 includes a laser displacement sensor 4 for measuring the surface level of the surface shape of the building panel 1 that has passed below, and a data processing terminal 8 to which the laser displacement sensor 4 is connected. The data processing terminal 8 is adjacent to the joint groove position specifying means 5 for determining the position of each joint groove 2 based on the measurement data D by the laser displacement sensor 4 and based on the joint groove position data. Inter-groove distance detection means 6 for detecting the distance between the joint grooves 2 is provided. The laser displacement sensor 4 of this example is in a fixed state and measures the surface level of the building panel 1 being conveyed. However, the laser displacement sensor 4 is movable and the building panel 1 is in a fixed state. The laser displacement sensor 4 or the building panel 1 may be moved in the horizontal direction and relatively in the direction between the cut end faces of the building panel 1. That is, the laser displacement sensor 4 measures the surface level on a straight line extending between the cut end faces of the building panel 1.

  In this example, in order to detect the surface shape of the building panel 1, as shown in FIG. 4, first, the surface level on a straight line extending between the cut end faces of the building panel 1 is measured by the laser displacement sensor 4. For example, when the surface level on a straight line extending between the cut end faces of the building panel 1 in FIG. 1A is measured (the thick line in the figure is the scanning line of the laser displacement sensor 4), the laser displacement sent to the data processing terminal 8 is measured. The measurement data D of the sensor 4 is as shown in FIG. That is, the measurement data D of the laser displacement sensor 4 uses the position of the building panel 1 in the direction extending between the cut end faces of the building panel 1 as the x-axis component and the surface level at the position of the building panel 1 as the y-axis component. In the data formed by plotting, the data value indicates a high level in the convex portion on the surface of the building panel 1, and the data value indicates a low level in the concave portion on the surface of the building panel 1.

  Next, based on the measurement data D of the laser displacement sensor 4, the joint groove 2 is determined by the joint groove position specifying means 5. Specifically, first, a reference height position H is set at an arbitrary height position in the joint groove 2 of the building panel 1. In this example, the reference height position H is the height position obtained by calculating the average thickness of the building panel 1 from the measurement data D and subtracting a predetermined value from the average thickness, and in the joint groove 2. The height position is set, but for example, a thickness measuring device is provided separately and calculated as described above based on the thickness data obtained by measuring the thickness of the building panel with this thickness measuring device. Also good. Moreover, in this example, even when a plurality of building panels are manufactured from one long panel, the reference height position H is calculated and applied for each manufactured building panel. It is also preferable to apply the reference height position H obtained from the average thickness of one building panel to other building panels among the plurality of building panels.

  Next, as shown in FIG. 1C and FIG. 2, the measurement data D of the laser displacement sensor 4 and the reference height position H are compared, and the measurement by the laser displacement sensor 4 that exceeds the reference height position H is performed. A location where the data D falls below the reference height position H (position in a direction extending between the cut end faces of the building panel 1) is defined as a groove start end position a, and continues below the reference height position H from the groove start end position a. The location where the measured data D is above the reference height position H (the position in the direction between the cut end surfaces of the building panel 1) is defined as the groove end position b, and the distance between the groove start position a and the groove end position b. Is a provisional groove width A, and the provisional groove width A is within the allowable range of the reference groove width A ′ set in advance corresponding to the reference height position H, the building panel including the provisional groove width A 1 is determined as a joint groove 2. Here, the reference groove width A ′ is a dimension obtained by adding a dimensional tolerance to the groove width dimension corresponding to the reference height position H in the rated building panel 1. By determining the joint groove 2 using the provisional groove width A based on the reference height position H as a parameter as described above, the joint groove 2 can be accurately determined from among the concave portions of the building panel 1.

  It is also preferable to add a parameter for determining the joint groove 2 in addition to the provisional groove width A in order to improve the detection accuracy of the joint groove 2. Specifically, in the example of FIG. 6, after obtaining the provisional groove width A as in the previous example, the difference between the reference height position H and the measurement data D below the reference height position H within the provisional groove width A is calculated. The provisional groove depth E is determined, and the provisional cross-sectional area B of the portion recessed below the reference height position H in the concave portion of the building panel 1 is obtained, and these provisional groove width A, provisional groove depth E, and provisional cross-sectional area B Are only within the ranges of the reference groove width A ′, the reference groove depth E ′, and the reference cross-sectional area B ′ set in advance corresponding to the reference height position H, the temporary groove width A is The concave part of the building panel 1 to be included is determined as the joint groove 2. Here, the reference groove depth E ′ is a dimension obtained by adding a dimensional tolerance to the groove depth dimension corresponding to the reference height position H in the rated building panel 1, and the reference sectional area B ′ is a rated building panel. 1 is an area obtained by adding a dimensional tolerance to the cross-sectional area B corresponding to the reference height position H in FIG. Specifically, the provisional groove depth E in this example is the maximum difference between the measurement data D below the reference height position H and the reference height position H, and the provisional groove depth E is set to the reference height position H. Correspondingly, it is compared with the maximum reference groove depth E ′ set in advance, but is set in advance for each provisional groove depth E at each plot position of the measurement data D within the provisional groove width A and each plot point. The reference groove depth E ′ may be compared to determine the joint groove 2. In this case, the joint groove 2 can be determined more precisely. In this way, by increasing the parameters for determining the joint groove 2, for example, in the building panel 1 in which the recessed portion that is easily mistaken for the joint groove 2 is formed, the joint groove is selected from among the recessed portions of the building panel 1. 2 can be accurately determined. Of course, according to the surface shape of the building panel 1, the joint groove 2 may be determined by an appropriate combination of the provisional groove width A, the provisional groove depth E, and the provisional cross-sectional area B other than the present example and the precedent. Needless to say.

  Next, while calculating | requiring the cross-sectional area B (same as the said provisional cross-sectional area B) of the site | part recessed below the reference | standard height position H in the concave site | part of the building panel 1 determined as the joint groove 2 as mentioned above, A center-of-gravity position C in a direction extending between the cut end faces of the building panel 1 having the cross-sectional area B is obtained. For example, the cross-sectional area B is obtained by adding each difference obtained by subtracting the reference height position H from the y-axis component of the measurement data D for each unit plot width in the x-axis direction. The sum of the x-axis component and the y-axis component of the measurement data D for each unit plot width in the x-axis direction at the coordinate obtained is added and then divided by the cross-sectional area B. The center-of-gravity position C in the direction extending between the cut end faces of the building panel 1 is recognized as the center position F of the joint groove 2, and is aligned with the center of the rated groove width M of the joint groove 2. The position range is recognized, and the portion between the adjacent joint grooves 2 is recognized as the position range of the pattern protrusion 3. Here, the rated groove width M of the joint groove 2 is a rated groove width dimension of the joint groove 2 in the rated building panel 1. Thus, by setting the center of gravity C in the direction extending between the cut end faces of the building panel 1 as the center position F of the joint groove 2, it is possible to specify the exact position range of the joint groove 2 and the pattern protrusion 3. It is. Specifically, the concave portion to be the joint groove 2 of the manufactured building panel 1 is not only a shape close to the shape of the joint groove 2 of the rated building panel 1 as shown in FIG. Depending on the manufacturing error that is likely to occur due to manufacturing reasons such as applying a concavo-convex pattern to the scale panel with a press, and the positional relationship of the minute concavo-convex pattern of the pattern projection 3, as shown in FIG. Although it may become a shape slightly deviated from the shape of the joint groove 2, the center of gravity C in the direction extending between the cut end faces of the building panel 1 is set as the center position F of the joint groove 2 as described above. Although it is based on the shape of the manufactured concave part, the accurate center position F of the joint groove 2 that can suppress the above-described manufacturing error and the influence of the minute uneven pattern of the projection for projection 3 as much as possible. An accurate position range of the pattern protrusion 3 can be specified. It is. Next, the distance between the joint grooves 2 adjacent to each other is specified by the inter-groove distance detecting means 6 with the center of gravity C as a reference. Thereby, based on the position data of each joint groove 2 in the direction extending between the cut end faces of the building panel 1 and the distance data between the adjacent joint grooves 2, high accuracy in the direction extending between the cut end faces of the building panel 1. Surface shape data can be obtained.

  According to the method for detecting the surface shape of the building panel 1, the surface level of the building panel 1 is measured in a straight line across the pair of opposite ends of the building panel 1 by the laser displacement sensor 4. The obtained measurement data D of the laser displacement sensor 4 can reduce the amount of data compared to the image data obtained by photographing the surface of the conventional building panel 1 and can eliminate variations due to lighting conditions. The position of each joint groove 2 between the ends of the opposing building panel 1 is determined by the joint groove position specifying means 5 based on the measurement data D by the laser displacement sensor 4. The distance between the adjacent joint grooves 2 is calculated on the basis of the joint groove position data by the joint groove distance detection means 6 and is calculated. Since detection is performed of the surface shape of Le 1 is the detection of the surface shape of the building panel 1 of a simple and highly accurate as compared to conventionally been possible. In particular, the uneven shape formed by pressing a ceramic-based (cement-based) long panel is prone to manufacturing errors as described above, and in conventional imaging data, the above manufacturing errors are sensitive to illumination. The center position of the joint groove 2 that is recognized based on this imaging data is excessively influenced by the manufacturing error, and is displaced from the position that should normally be obtained from the shape of the concave portion. However, the center position of the joint groove 2 in the surface detection method of the present invention is the cross-sectional area B of the part recessed below the reference height position H in the concave part of the building panel 1 determined to be the joint groove 2. Since the center of gravity position C is set as the center position of the joint groove 2 as described above, the influence of manufacturing errors and the like can be eliminated as much as possible, so that the surface shape of the building panel 1 can be detected with high accuracy. It is done

  Whether the surface shape data in the direction extending between the cut end faces of the building panel 1 obtained as described above is compared with the uneven pattern data in the rated building panel 1, for example, so that the surface shape is formed according to the rated dimension. It is possible to perform a quality inspection to check whether or not, and for example, it can be used effectively in the painting process as described below.

  As shown in FIG. 5, the coating apparatus 9 used in the painting process has a coating means 10 for applying a coating pattern similar to the uneven pattern applied to the long panel, and the surface shape detection described above. The surface shape data obtained by the apparatus 7 and the paint pattern data are compared, the position of the cutting end surface of the building panel 1 in the paint pattern is specified, and the uneven pattern and the paint pattern on the surface of the building panel 1 are conveyed. A difference detection unit 11 for detecting a deviation width in the direction, and an initial position adjustment unit 12 for setting the painting start position of the painting pattern of the painting means 10 by shifting the deviation width detected by the difference detection unit 11 are provided. ing. Here, as the coating means 10, even an ink jet apparatus that appropriately ejects ink toward the surface of the building panel 1 based on the coating pattern data, the peripheral surface is set as a printing surface and is pressed against the surface of the building panel 1. The printing roll apparatus by which a coating pattern is printed on the surface of the construction panel 1 by this.

  The building panel 1 conveyed with the cut end face directed in the traveling direction is detected by the surface shape detection device 7 before the coating device 9 is carried in, that is, each joint groove in the conveying direction of the building panel 1. Surface shape data based on the distance between the two positions and the adjacent joint grooves 2 can be obtained. This surface shape data is sent to the difference detection unit 11 of the coating apparatus 9 and compared with the coating pattern data. Specifically, this paint pattern data is uneven shape data on the same line as the scanning line of the laser displacement sensor 4 based on the paint pattern. That is, the paint pattern data includes the position of each joint groove 2 in the rated building panel 1 and the adjacent one. Data relating to the distance between the joint grooves 2 is included. Specifically, the comparison between the surface shape data and the coating pattern data is performed by comparing the data concerning the positions of the joint grooves 2 in the surface shape data and the distances between the adjacent joint grooves 2 and the joint grooves 2 in the coating pattern data. This is done by comparing the data concerning the position and the distance between adjacent joint grooves 2. Thereby, the position of the cutting end surface on the traveling side of the building panel 1 in the painting pattern can be specified, and the deviation width in the conveying direction between the uneven pattern on the surface of the building panel 1 and the painting pattern can be detected. Next, the initial position adjusting unit 12 sets the coating start position of the coating pattern of the coating unit 10 by shifting the deviation width detected by the difference detecting unit 11, and the coating unit 10 sets the initial position adjusting unit. By coating the surface of the building panel 1 from the coating pattern at the coating start position set in 12, the coating according to the surface shape of the building panel 1 can be performed with high accuracy. In this example, each pattern projection 3 is painted with a different color or pattern, and more specifically, the surface of the pattern projection 3 is painted from the boundary with the joint groove 2. ing. Of course, the difference detection unit 11 can also identify the position of the cut end surface on the reverse side of the building panel 1 in the painting pattern by comparing the surface shape data and the painting pattern data, and also the painting end position of the painting pattern of the painting means 10. Since it can be set, according to the surface shape of the building panel 1, it is possible to finish the coating of the coating means 10 and to eliminate the waste of manufacturing.

  As described above, according to the above-described coating method, it is particularly effective when sequentially coating each building panel 1 formed by cutting a long panel having a concavo-convex pattern on its surface at an arbitrary position in the longitudinal direction. The coating device 9 for coating with a coating pattern corresponding to the uneven pattern is highly productive and performs high-precision coating according to the surface shape of each building panel 1 based on the surface shape data by the surface shape detection device 7. It can be made.

  In the above-described embodiment, the ceramic-based (cement-based) building panel 1 has been described, but it is needless to say that the surface shape measuring method and the coating method of the present invention can be applied to the metal-based building panel 1.

It is an example of embodiment of this invention, (a) is drawing explaining the measurement of the laser displacement sensor of the surface of a building panel, (b) is the measurement of the laser displacement sensor corresponding to the building panel of (a). (C) is an enlarged view of the I part of (b). FIG. 2 is an enlarged view of a portion J in FIG. It is a schematic block diagram of the surface shape detection apparatus same as the above. It is a flowchart of the principal part same as the above. It is a schematic block diagram of the coating device in the same coating method. It is a flowchart of the principal part of the other example of embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Architectural panel 2 Joint groove 3 Projection part 4 Laser displacement sensor 5 Joint groove position identification means 6 Inter-groove distance detection means 7 Surface shape detection device 8 Data processing terminal 9 Coating device 10 Coating means 11 Difference detection part 12 Initial Position adjustment part A Temporary groove width B Temporary cross-sectional area C Center of gravity position D Measurement data E Temporary groove depth F Joint groove center position H Reference height position M Rated groove width

Claims (4)

  A plurality of joint grooves and pattern protrusions are alternately arranged between a pair of opposing ends of the building panel, and the building panel in the two or more pattern protrusions of the plurality of pattern protrusions A method for detecting the surface shape of a building panel, wherein a concave-convex pattern formed so as to have different length dimensions in a direction between a pair of opposing ends is provided on the surface, the pair of opposing ends of the building panel A laser displacement sensor for measuring a building panel or a surface level of the building panel is relatively moved in the direction between the two, and the surface level of the building panel is moved between a pair of opposite ends of the building panel by the laser displacement sensor. Measured on a straight line, and determined the position of each joint groove between the ends of the opposing building panel based on the measurement data by the laser displacement sensor by the joint groove position specifying means, Surface shape detection method of building panels, characterized in that in order to detect each of the distances between the eye Graben adjacent on the basis of the first Graben position data by inter-groove distance detecting means.   The reference height position is set at an arbitrary height position in the joint groove of the building panel by the joint groove position specifying means, and the surface level is measured across a pair of opposite ends of the building panel by the laser displacement sensor. The measurement data obtained in this step and the reference height position are compared, and the position where the measurement data by the laser displacement sensor that has exceeded the reference height position is below the reference height position is defined as the groove start position. The position where the measurement data that was continuously below the reference height position from the position exceeds the reference height position is defined as the groove end position, and the interval between the groove start position and the groove end position is defined as the provisional groove width. When the groove width is within the allowable range of the reference groove width set in advance corresponding to the reference height position, the concave portion of the building panel including the temporary groove width is determined as a joint groove, and the joint groove and Determined building panel The cross-sectional area of the concave portion is recessed below the reference height position, and the center of gravity of the cross-sectional area is obtained. 2. The method of detecting the surface shape of a building panel according to claim 1, wherein the distance between the grabens is specified.   The reference height position is set at an arbitrary height position in the joint groove of the building panel by the joint groove position specifying means, and the surface level is measured across a pair of opposite ends of the building panel by the laser displacement sensor. The measurement data obtained in this step and the reference height position are compared, and the position where the measurement data by the laser displacement sensor that has exceeded the reference height position is below the reference height position is defined as the groove start position. The location where the measurement data that was continuously below the reference height position from the position exceeds the reference height position is defined as the groove end position, and the interval between the groove start position and the groove end position is defined as the provisional groove width. The difference between the reference height position and the measurement data below the reference height position within the width is the provisional groove depth, and the provisional cross-sectional area of the part recessed below the reference height position in the concave part of the building panel is obtained, these Only when the constant groove width, provisional groove depth and provisional cross-sectional area are within the preset reference groove width, reference groove depth and reference groove cross-sectional area corresponding to the reference height position, respectively. The concave part of the building panel including the provisional groove width is determined as a joint groove, the center of gravity position of the provisional cross-sectional area in the concave part of the building panel determined as the joint groove is obtained, and the joint groove distance detection means, 2. The method for detecting the surface shape of a building panel according to claim 1, wherein the distance between adjacent joint grooves is specified with the position of the center of gravity as a reference.   A concavo-convex pattern formed such that a plurality of joint grooves and pattern protrusions are alternately arranged in the longitudinal direction of the long panel and the length dimension in the longitudinal direction of two or more pattern protrusions is different. Coating with a coating means for coating the surface of a building panel formed by cutting a long panel formed on the surface continuously and repeatedly at an arbitrary position in the longitudinal direction with a coating pattern corresponding to the above uneven pattern A method of painting a building panel that uses a device to apply a predetermined coating, and before bringing the building panel into the painting device that is transported with the cut end face in the direction of travel, the surface level of the building panel is adjusted. The position of each joint groove in the conveyance direction of the building panel and each adjacent one using the surface shape detection method according to any one of claims 1 to 3 so as to be measured by a laser displacement sensor over the conveyance direction. The surface shape data based on the distance between the grabens is detected, the difference detector provided in the coating device compares the surface shape data obtained by the above surface shape detection method with the coating pattern data, and the building within the coating pattern The position of the cutting end surface of the panel is specified to detect the deviation width in the conveying direction between the uneven pattern on the surface of the building panel and the coating pattern, and at the initial position adjustment unit provided in the coating apparatus, the difference detection unit Set the coating start position of the painting pattern of the painting means by shifting the detected deviation width, and paint on the surface of the building panel from the coating pattern at the painting start position set by the initial position adjustment unit with the painting means. A method of painting an architectural panel characterized by applying

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