JP4891761B2 - Floor groove surface groove forming method - Google Patents

Description

  The present invention relates to a method for forming a groove in a surface of a floor board.

  The floorboard is generally manufactured as follows.

  That is, for example, a wood base plate such as plywood or MDF having a thickness of 12 mm is cut into a rectangular shape in plan view having a predetermined dimension, for example, 313 mm in width and 1828 mm in length, and a decorative material having a planar dimension in width of, for example, 303 mm and length of 1818 mm is formed on the surface. After affixing, the male and female seeds are cut into the adjacent two sides, and the male and female seeds are similarly cut into the other two sides. Then, after chamfering the four peripheral edges of the plate, an arbitrary number of longitudinal surface grooves extending in the longitudinal direction of the plate are cut and formed at appropriate intervals using a cutting machine such as a tenoner.

Furthermore, if necessary, by cutting and forming an arbitrary number of lateral surface grooves at appropriate intervals with a cutting machine such as a router in the short direction, a staggered surface groove is formed by the longitudinal surface grooves and the lateral surface grooves. It forms (patent document 1).
JP 2001-241172 A

  In the manufacture of such a floor plate, when forming the vertical surface groove, it is cut by applying a cutting machine at a predetermined distance from the edge of the female side along the longitudinal direction. A decorative material is attached to the surface of the board. Therefore, when the vertical line of the decorative material is not adhered so as to be parallel to the edge along the longitudinal direction of the board or when the decorative material is bent and adhered, the vertical surface groove is inconsistent with the vertical line of the decorative material. , Will be defective. Similar problems can occur between the lateral surface grooves and the horizontal lines of the decorative material.

  Therefore, the problem to be solved by the present invention is to always perform cutting so as to match the vertical / horizontal lines of the decorative material when forming the vertical / horizontal surface grooves on the surface of the floor board.

In order to solve the above-mentioned problems, the present invention according to claim 1 recognizes a line appearing on the surface of the floor board when the surface groove is formed on the surface of the floor board, and extends in the longitudinal direction of the floor board. Calculating the interval between the vertical line and the reference line extending in the same direction of the floor board along the longitudinal direction, determining whether or not the deviation of the interval between the vertical line and the reference line is within a specified range, When the deviation is within the specified range, cutting is performed along the vertical line of the surface of the floor board to form a surface groove, and when the deviation exceeds the specified range, the floor board is not formed without forming the surface groove. Is a floor groove surface groove forming method characterized in that

According to the present invention , the distance between the vertical line extending in the longitudinal direction of the surface of the floor board and the reference line extending in the longitudinal direction of the floor board is calculated along the longitudinal direction, and the deviation of the distance is within a specified range. After confirming the above, the surface groove is formed by cutting along the vertical line on the surface of the floor board, so the parallelism, meandering, bending, etc. of the line appearing on the floor board surface exceed the specified range. Can be rejected as a defective product without cutting the surface grooves. If the parallelism, meandering, bending, etc. of the vertical line of the decorative material are within the specified range, the surface groove will be formed by faithfully cutting along the vertical line, and the product should be manufactured as a good appearance with no discrepancy. Can do.

  In the present invention, the floor board is a board made of plywood, MDF, laminated board or the like, and a line appears on the surface thereof.

  Lines appearing on the floor board surface mean continuous lines such as straight lines and curves, but in particular, vertical lines extending in the longitudinal direction of the board and horizontal lines extending in the short direction of the board are typical. It is. The thickness of the line may be a thickness that can be recognized by the camera, but is generally about 0.1 to 1 mm.

  In order to make a line appear on the floor board surface, for example, a decorative material in which a line is previously provided on the surface is stuck on the substrate as described above. As such a decorative material, a single plate obtained by thinning a flitch (described later), a synthetic resin film or sheet having a line pattern by printing or the like can be used. Alternatively, coating or printing may be performed directly on the substrate so that the lines appear as painted lines or printed lines.

  The line appearing on the floor board surface is recognized by imaging the floor board surface with a camera. More specifically, the line can be recognized by analyzing the imaging data of the camera by a computer and identifying the color difference (color intensity, shading) between the line part on the surface of the floor board and the other part. It is also possible to recognize lines on the basis of chromaticity, luminance, etc. instead of color tone.

In the present invention , the reference line extends in the longitudinal direction of the floorboard, and in particular, an edge line extending in the longitudinal direction of the floorboard is preferably used as the reference line. When the line width becomes a problem, the interval is calculated with the center of the line width as the line position.

  The interval deviation means a deviation from the average value of the calculated intervals. The specified range of the distance deviation is that the distance deviation is within a range of ± d, and the value of d is about ½ of the line width. For example, when the line width is 1.6 mm, d = 0.8 mm.

  The surface groove is formed by cutting along a line appearing on the floor plate surface. Although the shape and size of the surface groove are not particularly limited, for example, a U groove or V groove having an opening width of 1.6 mm and a depth of about 1 mm can be used. As a cutting means for forming the surface groove, a laser device, a tenoner, a router, a shaper, or the like can be used.

  FIG. 1 is a conceptual view of an apparatus for carrying out a floor groove surface groove forming method according to the present invention. This apparatus captures the surface of the floor board 1 to be processed (floor board before the surface groove is formed) 1 and outputs the image data 2 on the surface of the floor board 1 to be processed from the input image data 2. The computer 4 that recognizes the vertical lines 5 and 6 that are present and outputs the vertical line position data 7 and the horizontal line position data 8 as the recognition results, and the vertical line position data 7 and the horizontal line position data 8 from the computer 4. The vertical surface groove cutting part 11 and the horizontal surface groove cutting part 12 for cutting and forming the vertical surface groove 9 and the horizontal surface groove 10 respectively on the surface of the floor plate 1 to be processed are provided. Both the vertical surface groove cutting part 11 and the horizontal surface groove cutting part 12 in this embodiment cut grooves by laser irradiation. The lateral surface groove cutting part 12 cuts while moving in the Y direction. Reference numeral 1 ′ represents a floor plate to be processed immediately before the transfer direction X of the floor plate 1 to be processed.

  The computer 4 is provided with a display device 13, an output device 14, and a storage device 15. The result of analyzing the image data 2 from the camera 3 is displayed on the display device 13, and the processing result is output from the output device 14. In addition, the processing result can be stored in the storage device 15.

  In FIG. 1, it is shown that the processing floor board 1 is arranged upward and the processing such as imaging and groove formation is performed while being transferred in the transfer direction X, but the surface of the processing floor board 1 is a flat board surface. If the positional relationship is such that the surface grooves 9 and 10 are cut by irradiating with a laser from below, even if the thickness of the floor plate 1 to be processed changes, Since the depth of 10 can be cut to a certain depth, there is an advantage that surface groove processing is facilitated.

  The processed floor board 1 in this embodiment is obtained by laminating and sticking a single board obtained by thinning a flitch on a substrate such as an MDF. As shown in FIG. 2, the flitch 16 is a large block that is manufactured by assembling plate materials or square members a to j by applying pressure from four sides through an adhesive. The flitch 16 is thinly cut into a single plate, which is adhered to a base material, and the floor plate 1 to be processed is obtained. The thickness of a single plate is generally about 0.15 to 0.8 mm. In the single plate obtained from the flitch 16, the bonding surfaces of the plate members or square members a to j and the adhesive interposed therebetween are recognized as the vertical line m and the horizontal line n. When a colorant is added to the adhesive and used as a colored adhesive, the lines m and n are recognized as clearer, and the lines can be easily and reliably identified.

  FIG. 3 is a flow diagram of a method for forming a surface groove on a floor board according to the present invention, which is carried out using the apparatus of FIG.

  First, the surface of the floor board 1 to be processed is imaged by the camera 3 and sent to the computer 4 as image data 2 (S1). The camera 3 may be a black and white camera or a color camera. A lighting device (not shown) is provided adjacent to the camera 3 as necessary. In order to eliminate noise caused by unnecessary reflected light from the image data 2, it is preferable to attach a polarizing filter to the camera 3 and / or the illumination device.

  The computer 4 analyzes the image data 2 from the camera 3 and identifies the line (m, n; 5, 6) part and the other part by the color tone (color intensity, shading) and The line 5 and the horizontal line 6 are recognized as a set of coordinates (S2).

  That is, the lines m and n formed by the adhesive have a relatively dark color tone, while the other portions have a relatively light color tone because the surface color of the plate material or square materials a to j themselves appears. Therefore, by determining whether the color tone of each part (each coordinate point) in the image data 2 is larger or smaller than a predetermined threshold, it is possible to distinguish the line part from the other part. is there.

  Further, in order to recognize the vertical line 5 and the horizontal line 6 as a set of coordinates, a vertical reference line and a horizontal reference line are set in advance. In this embodiment, the edge line on the female side on the long side is the vertical reference line, and the edge line on the female side on the short side is the horizontal reference line. Therefore, the corner that is the intersection of these is the coordinate origin O. Then, by grasping the lines identified by the color difference as described above as a set of coordinates, the vertical lines 5 and the horizontal lines 6 are identified, and each of these is recognized as a set of coordinates.

Next, an average value and a deviation of the distance between the vertical line 5 and the vertical reference line 17 are calculated (S3). Since the coordinates of the respective parts constituting the vertical line 5 are grasped in S2, the average value of the distances (intervals in the short direction) between these respective parts and the vertical direction reference line 17 is calculated, and the intervals and averages of the respective parts are calculated. The difference from the value is calculated as a deviation. In other words, the three vertical lines 5 appearing on the surface of the floor board 1 to be processed in this embodiment are separated from the vertical reference line 17 by a predetermined distance of distances D ₁ , D ₂ , and D ₃ , respectively. The reference line 17 and each vertical line are designed to extend in parallel. Actually, however, the single plate vertical line m obtained by thinning the flitch 16 is in the longitudinal direction of the floor board 1 to be processed. There is a case where it is stuck or bent and kept without maintaining the strict parallelism, and the interval between each part of the vertical line 5 and the vertical reference line 17 is not constant. In such a case, the average value and the deviation of the interval are calculated to grasp the parallelism and the degree of bending of the vertical line 5.

  Then, based on this calculation result, it is determined whether or not the deviation of the distance between the vertical line 5 and the vertical reference line 17 is within a specified range (S4). Specifically, for example, when forming the longitudinal groove 9 having a groove width of 1.6 mm, ± 0.8 mm which is a half of the longitudinal groove 9 is defined as a specified range, and if the deviation is within this range (S4: YES), The line position data 7 is sent to the vertical surface groove cutting part 11 to instruct to cut the vertical surface groove 9. When the deviation exceeds the specified range (S4: NO), the floor plate 1 to be processed is removed from the processing line as a defective product. Accordingly, surface groove cutting is not performed on the floor plate 1 to be processed.

  Since the vertical line position data 7 includes the coordinate data of each part of the vertical line 5 on the surface of the floor plate 1 to be processed, the vertical surface groove cutting part 11 having received this data follows the vertical line 5 faithfully. The surface groove 9 is formed by cutting (S5).

  Next, the horizontal surface groove 10 is cut and formed faithfully along the horizontal line 6 on the surface of the floor plate 1 to be processed by the horizontal surface groove cutting part 12 that has received the horizontal line position data 8 (S6).

  FIG. 4 is a conceptual view of another apparatus for carrying out the floor groove surface groove forming method according to the present invention. This apparatus is different from the apparatus of FIG. 1 in the longitudinal surface groove cutting part and the transverse surface cutting part. Elements and portions common to the apparatus of FIG. 1 are denoted by the same reference numerals as those in FIG. 1, and description thereof is omitted.

  The vertical surface groove cutting portion 11 ′ of this apparatus is configured as a tenoner, receives vertical line position data 7 from the computer 4, and cuts and forms the vertical surface groove 9 with a cutting rotary blade.

  The transverse surface groove cutting part 12 ′ is configured as a router, and receives the transverse line position data 8 from the computer 4 and moves the transverse surface groove 10 by a cutting blade rotating around the vertical axis while moving in the transverse direction Y. Cutting form.

  Both the cutting rotary blade of the tenona 11 ′ and the cutting blade of the router 12 ′ are formed so that the outer locus of the blade tip when the blade is rotated corresponds to the shape of the vertical surface groove 9 and the horizontal surface groove 10. .

It is an apparatus conceptual diagram for enforcing the surface groove | channel formation method of the floor board by this invention. It is a perspective view which shows an example of the flitch for thinning and obtaining the single board which has a vertical line and a horizontal line. It is a flowchart of the surface groove | channel formation method of the floor board by this invention implemented using the apparatus of FIG. It is another apparatus conceptual diagram for enforcing the surface groove | channel formation method of the floor board by this invention.

Explanation of symbols

1,1 'Workpiece floor plate 2 Image data 3 Camera 4 Computer 5 Vertical line 6 Horizontal line 7 Vertical line position data 8 Horizontal line position data 9 Vertical surface groove 10 Horizontal surface groove 11, 11' Vertical surface groove cutting part 12, 12 'Horizontal Surface groove cutting part 13 Display device 14 Output device 15 Storage device 16 Flitch 17 Vertical reference line

Claims (1)

When forming a surface groove on the surface of the floorboard, the line appearing on the surface of the floorboard is recognized, and the distance between the vertical line extending in the longitudinal direction of the floorboard and the reference line extending in the same direction of the floorboard Is calculated along the longitudinal direction, and it is determined whether or not the deviation of the distance between the vertical line and the reference line is within the specified range. When the deviation is within the specified range, the vertical length of the surface of the floor board is determined. Forming a surface groove by cutting along a line, and if the deviation exceeds a specified range, the floor plate is eliminated as a defective product without forming the surface groove. Method.

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