JPH0564712U - Inspection position automatic setting device - Google Patents

Abstract

(57) [Summary] [Purpose] To automatically set the imaging device to the inspection position without being affected by sudden process changes or increase in product types. In an inspection position automatic setting device that automatically sets the imaging device 14 to a predetermined inspection position of an inspection object when inspecting the appearance of the inspection object using the imaging device 14 and an image processing device, On condition that the product switching signal has been received, the image pickup device 14 is moved in the width direction of the inspection object, the inspection object is imaged with the maximum product width, and a pattern including the inspection object whose imaging result is predetermined. In comparison with the above, the portion corresponding to the pattern to be inspected is recognized as the inspection position, the imaging device 14 is set at this inspection position, and the inspection is started.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention, when 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, is performed at a predetermined inspection position of the object to be inspected. , An inspection position automatic setting device for automatically setting an imaging device.

[0002]

[Prior Art]

 On the production line, it is not uncommon for products that differ not only in color but also in product width to be manufactured using the same manufacturing equipment. This can be easily realized by exchanging the mold in a production line for extrusion molding a plastic film, for example.

By the way, when the appearance inspection of a product is performed by the imaging device and the image processing device, it is necessary to inspect only a specific inspection position when the position where the defect occurs is obvious, or depending on the inspection content. There are cases. This inspection position will change simultaneously when the width of the product changes. At this time, there is a method of moving one imaging device to an inspection position by using a uniaxial robot or the like, as shown in FIG. 3, without using a plurality of imaging devices.

That is, in the conventional technique shown in FIG. 3, the determined process plan is input to the host computer 1. Then, when the exchange of a certain mold is completed and the manufacturing is restarted, the host computer 1 receives a product switching signal, and the host computer 1 reads the product type to be manufactured from the process plan and sets it. The inspection position corresponding to the product type is determined by referring to the existing table, the command is output to the robot controller 2, and the uniaxial robot 3 is driven to move the imaging device 4. Then, the product inspection is started using the image pickup device 4 and the image processing inspection device 5.

[0005]

[Problems to be solved by the device]

 However, the conventional technique has the following problems. That is, when the process plan is suddenly changed, it is necessary to re-enter the plan into the host computer again. Also, when a new type of product occurs in the future, the inspection position must be set accordingly and the table of the host computer must be reconfigured.

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

[0007]

[Means for Solving the Problems]

 The present invention is an inspection position automatic setting device that automatically sets an imaging device 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. In the above, on condition that the product switching signal is received, the imaging device is moved in the width direction of the inspected object, the inspected object is imaged at the maximum product width, and the imaging result includes a predetermined inspection object. By comparing the pattern with the pattern, the portion that matches the pattern to be inspected is recognized as the inspection position, and the imaging device is set at this inspection position to start the inspection.

[0008]

[Action]

 According to the present invention, before the inspection is started, the pattern imaged by the imaging device can be compared with a predetermined inspection target pattern, and the portion matching the inspection target pattern can be recognized as the inspection position. Then, the image pickup device is set to the above-mentioned inspection position 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 increase in product types.

[0009]

【Example】

 1 is a schematic diagram showing an embodiment of the present invention, FIG. 2 is a schematic diagram showing a predetermined pattern including an inspection object, and FIG. 3 is a schematic diagram showing a conventional example.

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

The image processing inspection device 15 inspects the appearance of the inspection target product based on the imaging result of the imaging device 14. At this time, the object to be inspected is a laminated glass shaded film, which is semi-transparent because it has extremely minute irregularities on the surface, and is partially colored, and its color gradually fades. And becomes colorless. The inspection position is this color transition section (see FIG. 2).

The work procedure of this embodiment will be described below. When the manufacturing is started and the host computer 11 receives the product switching signal, the host computer 11 controls the uniaxial robot 13 via the robot controller 12 so that the imaging device 14 can detect the maximum width of the product in the manufacturing line direction. The imaging device 14 is moved in the orthogonal direction. As a result, the image pickup device 14 sequentially picks up images of the sheet-shaped products conveyed on the manufacturing line at certain intervals.

The image processing inspection device 15 compares the image pickup result of the image pickup device 14 with a pattern including a predetermined inspection target. FIG. 2 is a pattern in this embodiment. Since the color transfer part is the object of inspection, the transmitted light emitted from the bottom has a small density value in the colored part and a large value in the colorless part. In this way, the portion where the pattern changes is searched by moving the image pickup device 14, and the image processing inspection device 15 recognizes the portion where the image pickup result of the image pickup device 14 matches the inspection target pattern as the inspection position, and The information is transferred to the host computer 11.

As a result, the host computer 11 controls the uniaxial robot 13 via the robot controller 12 to set the imaging device 14 at the above-mentioned inspection position. 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 inspection is started, the pattern imaged by the imaging device 14 is compared with a predetermined inspection target pattern, and the portion matching the inspection target pattern is recognized as the inspection position. can do. Then, the imaging device 14 is set to the above-mentioned inspection position and the inspection is started. 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 product types.

[0016]

[Effect of the device]

 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 product types.

[Brief description of 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.

[Explanation of symbols]

 11 Host Computer 12 Robot Controller 13 Uniaxial Robot 14 Imaging Device 15 Image Processing Inspection Device

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Claims (1)

[Scope of utility model registration request] 1. An inspection position automatic setting device for automatically setting an imaging device 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, On 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 inspection position automatic setting device characterized by comparing, recognizing a portion that coincides with an inspection target pattern as an inspection position, and setting an imaging device at this inspection position to start inspection.