JP2564236Y2 - Automatic inspection position setting device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method for inspecting the appearance of an object to be inspected (for example, a sheet-like product conveyed on a line) using an image pickup device and an image processing device. Automatically setting the imaging device for the inspection position
The present invention relates to an inspection position automatic setting device.

[0002]

2. Description of the Related Art In a production line, products that differ not only in color but also in product width are often produced using the same production equipment. This can be easily realized, for example, by exchanging a mold in a production line for extruding a plastic film.

By the way, when a visual inspection of a product is performed by an imaging device and an image processing device, a position where a defect occurs is obvious in advance, or depending on the inspection content, only a specific inspection position needs to be inspected in some cases. . This inspection position will simultaneously change as the width of the product changes. At this time, there is a method in which one imaging device is moved to an inspection position using a single-axis robot or the like as shown in FIG. 3 without using a plurality of imaging devices.

That is, in the prior art shown in FIG. 3, a predetermined process plan is input to the host computer 1. And
When the exchange of a certain mold is completed and the production is resumed, a product switching signal is input to the host computer 1, and the host computer 1 reads out the kind of the product to be produced from the process plan and refers to the set table. Then, the inspection position corresponding to the type is determined, the command is output to the robot controller 2, and the imaging device 4 is moved by driving the uniaxial robot 3. Then, the product inspection is started using the imaging device 4 and the image processing inspection device 5.

[0005]

However, the prior art has the following problems. That is, when the process plan is suddenly changed, it is necessary to input the plan again to the host computer. Further, when a new product type is generated in the future, it is necessary to set an inspection position corresponding to the new product type and reconfigure the table of the host computer.

An object of the present invention is to automatically set an image pickup apparatus to an inspection position without being affected by a sudden change in a process or an increase in types.

[0007]

According to the present invention, when an external appearance of an object to be inspected is inspected using an image pickup apparatus and an image processing apparatus, the image pickup apparatus is automatically set to a predetermined inspection position of the object to be inspected. In the automatic inspection position setting device, on condition that the product switching signal is received, the imaging device is moved in the width direction of the inspection object to image the inspection object with the maximum product width, and the imaging result is determined in advance. The pattern is compared with the pattern including the inspection target set, a portion matching the pattern to be inspected is recognized as the inspection position, and the imaging device is set at the inspection position to start the inspection.

[0008]

According to the present invention, before an inspection is started, a pattern imaged by an imaging device is compared with a predetermined inspection target pattern, and a portion matching the inspection target pattern is recognized as an inspection position. Can be. Then, the imaging device is set to the inspection position described above and the inspection is started.
Therefore, the imaging device can be automatically set to the inspection position without being affected by a sudden process change or an increase in types.

[0009]

1 is a schematic view showing an embodiment of the present invention, FIG.
Is a schematic diagram showing a predetermined pattern including an inspection target, and FIG. 3 is a schematic diagram showing a conventional example.

In FIG. 1, reference numeral 11 denotes a host computer, 12 denotes a robot controller, 13 denotes a uniaxial robot, 14 denotes an image pickup device (for example, a CCD camera), and 15 denotes an image processing inspection device.

The image processing inspection device 15 inspects the appearance of a product to be inspected on the basis of the image pickup result of the image pickup device 14.
At this time, the inspection target is a shaded film for laminated glass, which is translucent because it has extremely minute irregularities on the surface, and is partially colored, and its color is gradually lightened. It has the appearance of becoming colorless. The inspection position is the color transition section (see FIG. 2).

The operation procedure of the embodiment will be described below. When the production is started and the host computer 11 receives the product switching signal, the host computer 11 controls the one-axis robot 13 via the robot controller 12,
The imaging device 14 is moved in a direction perpendicular to the production line direction so that the imaging device 14 can image the maximum width of the product.
Thereby, the imaging device 14 images the sheet-like products conveyed on the production line one after another at certain intervals.

The image processing / inspection device 15 compares the image pickup result of the image pickup device 14 with a predetermined pattern including an inspection object. FIG. 2 shows a pattern in the present embodiment.
Since the color transition portion is the inspection target, the transmitted light emitted from the lower portion has a small density value in the colored portion and is large in the colorless portion. As described above, a portion where the pattern changes is searched for by moving the imaging device 14, and the image processing / inspection device 15 recognizes, as the inspection position, a portion where the imaging result of the imaging device 14 matches the inspection target pattern. Is transferred to the host computer 11.

As a result, the host computer 11
The single-axis robot 13 is controlled via the robot controller 12 to set the imaging device 14 at the inspection position described above. Further, the image processing inspection device 15 receives the inspection start signal, and starts the product inspection based on the imaging result of the imaging device 14.

According to the present embodiment, before the start of the inspection, the pattern imaged by the imaging device 14 is compared with a predetermined inspection target pattern, and a portion matching the inspection target pattern is recognized as the inspection position. can do. And
The inspection is started by setting the imaging device 14 at the inspection position described above. Therefore, the imaging device 14 can be automatically set to the inspection position without being affected by a sudden process change or an increase in types.

[0016]

As described above, according to the present invention, the imaging device can be automatically set to the inspection position without being affected by a sudden process change or an increase in types.

[Brief description of the drawings]

FIG. 1 is a schematic view showing an embodiment of the present invention.

FIG. 2 is a schematic diagram showing a predetermined pattern including an inspection target.

FIG. 3 is a schematic view showing a conventional example.

[Description of Signs] 11 Host computer 12 Robot controller 13 Uniaxial robot 14 Imaging device 15 Image processing inspection device

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code Agency reference number FI Technical display location G06F 15/70 455B

Claims (1)

(57) [Scope of request for utility model registration] 1. An inspection position automatic setting device for automatically setting an imaging device with respect to a predetermined inspection position of an inspection object when inspecting the appearance of the inspection object using an imaging device and an image processing device, Under the condition that the product switching signal is received, the imaging device is moved in the width direction of the inspection object to image the inspection object with the maximum product width, and the imaging result is a pattern including a predetermined inspection object. An automatic inspection position setting device, wherein a comparison is made, a part matching the pattern to be inspected is recognized as an inspection position, an imaging device is set at the inspection position, and the inspection is started.