JP2002136683A - Game panel inspection device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a game panel inspection device capable of assuring the reliability, enhancing the efficiency, and preventing the outflow of defectively worked product, when a worked game panel worked to finish the outside thereof an to provide part mounting holes is inspected. SOLUTION: In this game panel inspection device 10, the panel face image of the worked game panel 104 photographed by a CCD camera 36 is converted into digital image data by an A/D 64, the digital image data is compared with the digital reference data of a specified panel face image stored in a reference data memory 68 by a comparing part 66 to detect the positional displacement of part mounting holes 106 to 130, and the acceptance or rejection is judged by a judgment part 70. The judged results are notified by a lamp 74 and a buzzer 76. By this recognition of the image, the reliability of the inspection can be assured, and the efficiency can also be enhanced by the inspection using the device.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a game board inspection apparatus for inspecting a machined portion and a component mounting portion of a game board used for a game machine.

[0002]

2. Description of the Related Art A game board made of plywood is used for a game machine such as a pachinko machine, an arrangement ball machine, and the like. A component mounting hole for mounting various game parts on a game board outer shape and a board surface is formed by an NC router. Processing. FIG. 7 shows an outline of a conventional game board manufacturing process in a pachinko machine. After a veneer is processed by a router and deburred, a sampling inspection of the processed game board is performed.

In this sampling inspection, a board-shaped router processing measurement jig 100 as shown in FIG. 8 is used, and an inspector operates an L-shaped wall portion provided at an edge of the board surface of the jig. 1
02, the processed game board 104 is set in the direction of the arrows X and Y in the drawing, and the outer surface reference portions X0 and Y0 of the wall portion 102 are set.
X-Y at predetermined locations (component mounting holes 106, 108)
An axial displacement (dimensions XA, XB, YA, and YB in the figure) is measured with a vernier caliper to judge pass / fail.

[0004] In the assembly line, the operator visually inspects all of the game components mounted on the game board for mounting errors and positional deviations.

[0005]

However, in the conventional sampling inspection of a machined game board, since all machined parts cannot be measured due to the number of inspection man-hours or the like, the parts mounting holes (106 to 130) cannot be measured. May be unable to be detected if the positions are relatively displaced or the whole is displaced in the X-Y axis directions. In addition, since the measurement is performed manually by the inspector, there is a problem that the reliability such as a measurement error and the like, and it is difficult to improve the efficiency, and further, there is a possibility that the game board may be scratched or stained.

[0006] On the other hand, if the above-mentioned component mounting position shift defect due to the router processing shift factor is found on the component-installed game board in the inspection on the assembly line, the same defective product, that is, the component mounting, has already been found. In some cases, a large number of game boards having a misalignment defect are manufactured. For these defective products, game parts are removed from the game board and reused. In this way, if a router processing defect of the game board is overlooked, useless work such as removal and re-attachment of the attached game parts is generated, so that the work efficiency is remarkably reduced and the repair cost of defective products increases. There is.

[0007] In view of the above facts, the present invention has been made to secure reliability and improve efficiency when inspecting a processed game board in which an outer shape and a hole for mounting parts are processed, and to prevent the outflow of defective processing. It is an object to provide a game board inspection device.

[0008]

According to a first aspect of the present invention, there is provided a photographing means for photographing a board surface of a processed game board in which an outer shape and a hole for mounting parts are machined, and a board surface photographed by the photographing means. Conversion means for converting an image into digital image data, comparison means for comparing digital reference data of a predetermined board image of the processed game board stored in the storage means with the digital image data, and a comparison result by the comparison means Determining means for determining pass / fail of the processed game board based on
Notifying means for notifying the judgment result by the judging means, or at least one of sorting means for sorting the component-attached gaming board to a accepted product or a defective product based on the judgment result by the judging device. It is characterized by.

According to the first aspect of the present invention, the board surface of a processed game board having an outer shape, a hole for mounting parts, a concave portion, or the like machined by an NC router or the like is photographed by photographing means, and the board surface image (analog image signal) is taken. The data is converted into digital image data by a conversion means such as an A / D converter. In a storage means such as a RAM, digital reference data of a predetermined board image of the processed game board is stored, and the digital reference data and the digital image data are compared with each other by a comparing means such as a CPU to perform so-called pattern matching or the like. Compute and compare using image processing technology.

Here, the predetermined board image of the processed game board refers to a board surface in which the game board is machined as designed, that is, the board surface in which the outer shape, the hole for mounting parts, and the like have a regular shape and arrangement. The digital reference data of such a predetermined board image is, for example, a design drawing or a CA.
It can be formed based on D data, NC data, and the like.

Thus, for example, when the component mounting hole is misaligned, a difference between the digital image data and the digital reference data corresponding to the misalignment amount is obtained by the arithmetic processing. The determining means determines whether the processed game board is acceptable or not based on a comparison result obtained as a data difference. That is, if the data difference is equal to or less than a preset threshold, the product is determined to be a pass product, and if the difference is equal to or greater than the threshold, the product is determined to be defective.

This judgment result is notified to an inspector or the like by a notifying means such as a lamp, a buzzer, or a monitor, or is used for automation of an assembly line.
You may make it sort by a sorting means, such as a cylinder, into a passing product or a defective product.

As described above, by inspecting the processed portion of the game board with an apparatus having an image recognizing function, variation in the inspection is suppressed, and the inspection result is reported by the reporting means, so that the pass / fail judgment can be made clearly. Become. These ensure the reliability of the inspection. Further, the efficiency can be improved by using a conventional manual inspection device.

[0014] In addition, by automatically sorting the acceptable products and the defective products, the productivity can be improved by saving labor.
In addition, it is possible to perform 100% inspection and inspection of all processed parts, so that outflow of defective products can be reliably prevented, and there is no setting to a measuring jig or use of a measuring device as in the past, so a game board There is no need to worry about scratching or soiling.

According to a second aspect of the present invention, in the game board inspection apparatus according to the first aspect, there is provided reading means for reading identification information provided on the processed game board, and the identification read by the reading means. A plurality of types of the digital reference data stored in the storage unit are selectively switched based on information.

According to the second aspect of the present invention, for example, bar code identification information for identifying a model or the like provided on the processed game board is read by a reading means such as a bar code reader. . The storage unit stores a plurality of types of digital reference data corresponding to the identification information in the form of a database, and switches the digital reference data based on the read identification information.

[0017] This makes it possible to co-produce different types of game boards on the same line or to automate a plurality of types of game boards by using a single game board inspection apparatus. Equipment investment in panel inspection equipment can be reduced.

It is to be noted that the photographing means in the game board inspection apparatus according to claim 1 or 2 is a CCD as in claim 3.
It may be a camera, or a line sensor that scans the board in the vertical and horizontal directions.

[0019]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 and FIG. 2 show a state in which a game board inspection apparatus 10 according to an embodiment of the present invention is arranged on an assembly line 12. The assembly line 12 includes a chain conveyor 14 laid on a floor surface (not shown), and the game board inspection device 10 is installed in the middle of the chain conveyor 14.

A processed game board 104 (hereinafter simply referred to as a game board 104) manufactured by subjecting a veneer to predetermined router processing and deburring is placed on a pallet 26 with the board surface 105 facing upward. Are transported in the direction of arrow A in FIG. In the vicinity of the lower end edge of the board surface 105, a bar code 28 in which information for identifying the type of the game board 104 is converted into a bar code is provided.

The game board inspection apparatus 10 includes a frame 34 in which legs 32 are respectively suspended from four corners of a rectangular ceiling 30. The lower end of each leg 32 is fixed to a side edge of the chain conveyor 14, and the ceiling 30 is disposed above the chain conveyor 14 so as to face the same.

In the center of the lower surface of the ceiling section 30, a CCD camera 3
6 is attached, and the CCD camera 36 has a lens 38.
Is directed downward, and a predetermined area of the board surface 105 of the game board 104 transferred on the chain conveyor 14 is photographed.

The CCD camera 36 is connected to an apparatus main body 60, which will be described in detail later, of the game board inspection apparatus 10, and a photographed image is transmitted to the apparatus main body 60. At the time of photographing, a pair of stoppers 40 provided near the frame 34 project from the chain conveyor 14 and come into contact with the pallet 26 to stop the game board 104 at a predetermined position below the lens 38.

On the upstream side of the chain conveyor 14 with respect to the frame 34, a bar code reader 42 connected to the apparatus main body 60 is arranged. The bar code reader 42 is attached to the upper end of a column 44 erected on the side edge of the chain conveyor 14, reads the bar code 28 of the game board 104 passing below, and reads the information. The data is transmitted to the main body 60.

A cylinder 46 is provided on the downstream side of the chain conveyor 14 with respect to the frame 34. The cylinder 46 is also connected to the apparatus main body 60, and pushes out the game board 104 determined to be defective in the inspection to the defective product shelf 48 for line out. Further, when the cylinder 46 is driven, a pair of stoppers 50 provided on the chain conveyor 14 operate to come into contact with the pallet 26 to temporarily stop the game board 104.

Next, the main body of the game board inspection apparatus 10 will be described. FIG. 3 is a block diagram showing a schematic configuration of the game board inspection device 10. As shown in FIG.

Game board 10 photographed by CCD camera 36
4 (for example, a grayscale image of the board) is stored in the A / A of the image processing / control circuit unit 62 built in the apparatus main body 60.
The data is input to D64, converted into digital image data (hereinafter simply referred to as image data), and output to the comparison unit 66.

A reference data memory 68 is connected to the comparison section 66. The reference data memory 68 has a board image CAD of a game board 104 in which component mounting holes 106 to 130 are formed in a regular shape and arrangement. Digital reference data formed from the data (hereinafter, simply referred to as reference data) is stored. In the reference data memory 68, reference data of processed gaming boards of other models are also stored in a database and stored, and one of the plurality of types of reference data selectively output to the comparison unit 66 is as follows. It is determined by the information of the barcode read in advance by the barcode reader 42.

In the comparison section 66, the reference data of the game board 104 output from the reference data memory 68 and the image data of the board surface photographed by the CCD camera 36 are processed, and all the component mounting holes 106 to 130 are processed. Is subjected to pattern matching. Here, when there is a difference between the digital data of the captured image and the digital data of the reference image due to a defective shape or a positional shift of the component mounting hole, the difference between the data is output to the determination unit 70.

The judging section 70 judges that the gaming board 104 is acceptable if the difference between the data is equal to or less than the set threshold value in all the component mounting holes. If it is equal to or larger than the threshold value, it is determined to be defective. The determination level adjustment unit 72 is connected to the determination unit 70, and for example, it is possible to arbitrarily adjust, for example, a positional deviation standard (threshold) of a component mounting hole processing position.

The apparatus main body 60 is provided with a lamp 74 and a buzzer 76 connected to the judging unit 70. When the judging board 104 inspected by the judging unit 70 is judged to be defective, the lamp 74 is turned on. Alternatively, it flashes and an error sound is output from the buzzer 76.

When the inspection is completed and the game board 104 is transferred by the chain conveyor 14 and reaches the position of the cylinder 46, the stopper 50 projects from the chain conveyor 14 to stop the game board 104, and the cylinder 46 is stopped. Is driven in the direction of arrow B (projection direction) in the figure to
4 is pushed out to the defective shelf 48 (in the direction of arrow C in the figure). If the game board 104 is an acceptable product, the lamp 74 and the buzzer 76
And the cylinder 46 does not operate, and the game board 104 is transferred to the next step (the direction of arrow D in the figure).

Further, the above-mentioned game board inspection apparatus can be applied to the inspection of the positional deviation of the game components. In the present embodiment, downstream of the assembly line 12, FIG.
The game board inspection device 11 shown in FIG.

Here, the same components as those of the game board inspection apparatus 10 are denoted by the same reference numerals, and detailed description thereof will be omitted.
In the game board inspection apparatus 11, the board surface 24 of the component mounted game board 22 in which various game components 20 are mounted on the processed game board 104 is photographed by the CCD camera 36, and the image processing / control circuit section 62 of the apparatus main body 60 is taken. Are compared and determined for mounting errors and misalignments of the game components 20. When such defective products are detected, the ramp 74 and the buzzer 76 operate, and the game board 22 transferred to the distribution position of the assembly line 12 by the chain conveyor 14 is lined out by the cylinder 46. ing.

FIG. 5 shows an outline of a game board manufacturing process according to the present embodiment. In each inspection process, all the game boards are inspected.

As described above, in the game board inspection apparatus 10 according to the present embodiment, the board image of the game board 104 taken by the CCD camera 36 is converted into digital image data by the A / D 64, and the digital image data and The comparison unit 66 compares the digital reference data of the predetermined board image stored in the reference data memory 68 with the comparison unit 66, and detects a shape defect or a position shift of the component mounting holes 106 to 130, and the determination unit 70 By performing an inspection based on image recognition such as judging pass / fail, variation in the inspection is suppressed. In addition, since the inspection result is notified by the lamp 74 and the buzzer 76, the determination of the pass / fail is made clear, and the reliability of the inspection is secured by these. Further, the efficiency of the inspection is improved by the use of an inspection apparatus, and the outflow of defective products is reliably prevented by performing the total inspection.

Further, by automatically using the cylinder 46 to sort the acceptable and defective products, the productivity is improved.

In this embodiment, the bar code 28 for identifying the model provided on the game board 104 is read by the bar code reader 42 and the reference data memory 68 is read.
By switching to the corresponding data from the reference data stored in the plurality of types, it is possible to easily cope with mixed production of different-type game boards by the assembly line 12. Further, since there is no need to provide an assembly line or a game board inspection device for each model, capital investment costs can be suppressed.

In this embodiment, a CCD camera (area sensor) is used for photographing the board of the game board. However, other photographing means can be used. FIG. 6 is an example in which a line sensor is used for capturing a board image of the processed game board 104.

In this example, as shown in FIG.
Is bent at a right angle on the way, and the chain conveyor 8
The direction of the processed game board 104 transferred by 2 changes by 90 degrees with respect to the transfer direction. On the upstream side and the downstream side of the bent portion of the assembly line 80, a line sensor unit 88 composed of three line sensors 86 arranged along a direction orthogonal to the game board transfer direction.
A, 88B.

The line sensor units 88A, 88
B, the board surface of the processed game board 104 to be transferred is scanned in the vertical and horizontal directions (XY axis directions), and the processed portion is inspected by the image processing by the apparatus main body 60 of the game board inspection apparatus described above. It is.

Instead of the line sensor, for example, only an attachment point of a part (sensor, electric tulip, attacker, display, so-called center part, etc.) which is important in the game may be taken in by the image sensor. Good. Thereby, the inspection speed can be improved by reducing the amount of data to be processed.

In addition, in photographing the board surface of the game board, CC
The open side surface of the frame 34 on which the D camera 36 is installed may be covered with a light-shielding plate or the like to suppress variations in image quality of a captured image due to a change in external light.

Further, the present invention can be applied not only to a game board of a pachinko machine but also to an inspection of a game board of an arrange ball machine or the like.

[0046]

As described above, the game board inspection apparatus of the present invention has the above-described configuration, and thus, it is possible to secure reliability and improve efficiency when inspecting a processed game board, and prevent outflow of defective processing products.

[Brief description of the drawings]

FIG. 1 is a plan view of a game board assembly line in which a game board inspection device according to an embodiment of the present invention is installed.

FIG. 2 is a front view of the game board assembly line in FIG.

FIG. 3 is a block diagram showing a schematic configuration of a game board inspection device according to an embodiment of the present invention.

FIG. 4 is a plan view showing a state in which the game board inspection device according to one embodiment of the present invention is installed in an inspection process of a game board with components attached thereto on a game board assembly line.

FIG. 5 is a flowchart showing an outline of a game board manufacturing process using the game board inspection apparatus according to one embodiment of the present invention.

FIG. 6 is a plan view of a modification in which a line sensor is used for capturing a board image of a game board.

FIG. 7 is a flowchart showing an outline of a game board manufacturing process in a conventional pachinko machine.

FIG. 8 is a plan view showing a state in which a conventional processed game board is set on a router processing measurement jig.

[Explanation of symbols]

 10, 11 Gaming board inspection device 28 Barcode (identification information) 36 CCD camera (photographing means) 42 Barcode reader (reading means) 46 Cylinder (distributing means) 66 Comparison unit (comparing means) 68 Reference data memory (storage) Means) 70 determination unit (determination means) 74 lamp (notification means) 76 buzzer (notification means) 86 line sensor (photographing means) 104 processed game board 105 board surface 106-130 component mounting holes

Claims (4)

[Claims] 1. A photographing means for photographing a board surface of a processed game board in which an outer shape and a hole for mounting parts are machined, a converting means for converting a board image photographed by the photographing means into digital image data, Comparing means for comparing digital reference data of a predetermined board surface image of the processed game board stored in the means with the digital image data; and determining pass / fail of the processed game board based on a comparison result by the comparing means. Judging means, and notifying means for notifying the judgment result by the judging means, or at least one of sorting means for sorting the component-attached gaming board to accepted or defective products based on the judgment result by the judging means. A game board inspection device, comprising: 2. A reading means for reading identification information provided on the processed game board, wherein a plurality of types of the digital reference data stored in the storage means are stored based on the identification information read by the reading means. The game board inspection device according to claim 1, wherein the switching is selectively performed. 3. The game board inspection apparatus according to claim 1, wherein said photographing means is a CCD camera. 4. The game board inspection apparatus according to claim 1, wherein the photographing means is a line sensor that scans the board in vertical and horizontal directions.