JP7292713B2 - Inspection function confirmation method and inspection function confirmation device for optical inspection machine - Google Patents

Description

The present invention relates to an inspection function confirmation device. More particularly, it relates to an inspection function confirmation device for confirming the inspection function of an optical inspection machine.

The roll-to-roll system is often used in production lines for belt-shaped products such as films. While being conveyed in the horizontal direction, the surface is inspected for defects such as streaks, for example, by an optical method. In such an inspection, the surface of the object to be inspected is irradiated with light emitted from a light source such as a fluorescent lamp or an LED. Then, if the surface of the object to be inspected is a flat surface, only specular reflection occurs on the normal surface, while scattered light occurs due to irregular reflection on the surface with defects. Therefore, if the object to be inspected is photographed by the photographing means, the presence or absence of defects such as scratches can be determined based on the intensity of the photographed scattered light. If the object to be inspected is transparent, the optical inspection machine can inspect defects using not only reflected light but also transmitted light. Also, the optical inspection machine includes a case where inspection is performed using a so-called dark field.

After the strip-shaped product is manufactured on the production line of the strip-shaped product maker (herein sometimes referred to as the first maker), the maker that makes the next product from the strip-shaped product (herein referred to as the second maker) (sometimes). If a defect is found in the belt-shaped product when the second manufacturer manufactures the product, the first manufacturer installs the It is necessary to check whether this defect can be measured by the inspected machine. However, taking into consideration the fact that many belt-like products have already been cut and that it is necessary to re-stretch the belt-like product on the production line, generally the first manufacturer It is practically impossible to directly confirm the defect with the inspection machine installed in the manufacturing line. Therefore, conventionally, when such a defect is discovered, the first manufacturer needs to confirm with the inspection machine maker whether the defect can be found by the inspection machine on the production line. For this confirmation, it was necessary to use a demonstration machine of the inspection machine maker, so there was a problem that it took several weeks to a month.

Patent Literature 1 discloses an off-line adjustment device for a surface inspection device capable of detecting surface defects in a strip-shaped inspection object. This off-line adjustment device is provided with a sample plate mounting portion to which the sample plate is mounted, and slide means for sliding the sample plate. For example, by holding a part of the strip product with a defect in this sample plate mounting portion, the defect can be detected by the inspection machine delivered to the first manufacturer without using the demonstration machine of the inspection machine manufacturer. can be detected.

JP 2013-205378 A

The purpose of the off-line adjustment device of Patent Literature 1 is to use a sample to adjust the inspection threshold in a surface inspection device. This adjustment needs to be done frequently, so this off-line adjustment device is attached to the surface inspection device.

However, since it is attached to the surface inspection apparatus and it is necessary to move the surface inspection apparatus itself, there is a problem that the entire apparatus becomes large. In addition, it is not so frequent that the belt-like product is delivered to the second manufacturer without a defect in the belt-like product being discovered. There is a problem that the effectiveness is remarkably lowered. In addition, since it is attached to the surface inspection device, there is a problem that it cannot be diverted to other surface inspection devices.

SUMMARY OF THE INVENTION In view of the above circumstances, it is an object of the present invention to provide an inspection function confirmation apparatus that can confirm the function of an inspection apparatus with a simple structure without increasing the overall size of an inspection apparatus using an optical technique.

A method for confirming the inspection function of an optical inspection machine according to the first aspect of the present invention is such that a belt-shaped inspection object conveyed from one roller to another roller is irradiated with light from the one roller to the other roller. a step of attaching an inspection function confirmation device detachable to the optical inspection machine for inspection by reflection, transmission or scattering; and a step of attaching a portion determined to have a defect by an inspection machine other than the optical inspection machine; a step of moving the sample table in a direction parallel to the direction of movement from the one roller to the other roller; a step of confirming whether a defect present in a part of the inspection object can be detected .
A method for checking the inspection function of an optical inspection machine according to a second invention is characterized in that, in the first invention, the sample table has a light passing portion for the irradiation light to pass through.
A method for checking the inspection function of an optical inspection machine according to a third invention is characterized in that, in the first invention or the second invention, a sample cover is provided to cover a part of the strip-shaped object to be inspected.
According to a fourth aspect of the present invention, there is provided an inspection function confirmation method for an optical inspection machine according to any one of the first to third aspects, wherein the power unit is operated by a portable power supply device.
An inspection function confirmation device of a fifth invention is an inspection function confirmation device used in the inspection function confirmation method for an optical inspection machine according to any one of the first to fourth inventions, and is a part of the strip-shaped object to be inspected. and a sample table capable of holding a portion judged to have defects by an inspection machine other than the optical inspection machine; and a power device that operates in a direction parallel to the operating direction of the optical inspection machine, and is detachable from the optical inspection machine.

According to the first aspect of the invention, the inspection function confirmation device has a power device for moving the sample table in a direction parallel to the moving direction of the strip-shaped object to be inspected , and the power device moves the sample table in a predetermined direction. Therefore, the function for detecting defects can be confirmed in a posture of actually inspecting for defects such as scratches, so that the detection function can be reliably confirmed. Further, since the inspection function confirmation device is detachable from the optical inspection machine, the optical inspection machine does not need to include the inspection function confirmation device all the time, and the size of the optical inspection machine does not need to be increased. In addition, it is also possible to attach it to an inspection device manufactured by another manufacturer and check the inspection function of the inspection device.
According to the second aspect of the invention, the sample table has the light passage portion for passing the irradiation light, so that the inspection function of the optical inspection machine using transmitted light can be confirmed.
According to the third invention, since the sample cover is provided to cover the object to be inspected, it is possible to suppress light other than the inspection light from the light projection part, and to improve the accuracy of checking the inspection function.
According to the fourth aspect of the invention, since the power unit is operated by the portable power supply device, there is no need to supply power through a cable, and the use of the inspection function confirmation device becomes more flexible.

BRIEF DESCRIPTION OF THE DRAWINGS It is sectional drawing from the side direction of the test|inspection function confirmation apparatus which concerns on 1st Embodiment of this invention. 2 is a schematic plan view of an optical inspection machine in which the inspection function confirmation device of FIG. 1 is used; FIG. Figure 3 is a schematic side view of the optical inspection machine of Figure 2; FIG. 3 is a schematic explanatory diagram of an imaging method of the optical inspection machine of FIG. 2; FIG. 3 is a schematic side cross-sectional view of a light projecting section of the optical inspection machine of FIG. 2; FIG. 2 is a plan view of the inspection function confirmation device of FIG. 1; FIG. 2 is a side view of the inspection function confirmation device of FIG. 1; FIG. 2 is an explanatory diagram of how to use the inspection function confirmation device of FIG. 1;

Next, embodiments of the present invention will be described with reference to the drawings. However, the embodiment shown below exemplifies the inspection function confirmation device for embodying the technical idea of the present invention, and the present invention does not specify the inspection function confirmation device as follows. Note that the sizes, positional relationships, etc. of members shown in each drawing may be exaggerated for clarity of explanation. Also, the descriptions of "horizontal" and "vertical" described in this specification mean substantially horizontal or substantially vertical, and need not be strictly horizontal or vertical.

The inspection function confirmation device 10 according to the first embodiment of the present invention is configured to irradiate a strip-shaped inspected object S conveyed from one roller to another roller with irradiation light from one roller to another roller. An inspection function confirmation device 10 for an optical inspection machine 40 that performs inspection by reflection, transmission or scattering, comprising a sample table 11 capable of holding a part of a belt-shaped inspection object S, and the sample table 11 being a belt-shaped inspection object. and a power device for moving in a direction parallel to the direction of motion of S from one roller to another. The inspection function confirmation device 10 is detachable from the optical inspection machine 40 .

In this specification, the optical inspection machine 40 using the inspection function confirmation device 10 according to the present embodiment is first described, and then the inspection function confirmation device 10 is described.

(Optical inspection machine 40)
2 is a schematic plan view of an optical inspection machine 40 in which the inspection function confirmation device 10 according to the present embodiment is used, FIG. 3 is a schematic side view of this optical inspection machine 40, and FIG. 4 is this optical inspection. FIG. 5 is a schematic side sectional view of the light projecting section 33 of the optical inspection machine 40. As shown in FIG. The optical inspection machine 40 described here utilizes reflection of irradiation light. Irradiation light is emitted from a linear light projecting unit 33, and the reflected light is photographed by the photographing unit 30 to detect defects on the strip-shaped inspection object S. As shown in FIG.

As shown in FIG. 3, the strip-shaped inspection object S to be inspected by the optical inspection machine 40 is conveyed by so-called roll-to-roll, and defects and the like are inspected during the conveyance. The band-shaped inspection object S corresponds to, for example, a sheet-shaped member made of film, paper, printed matter, cloth, metal, or the like. The band-shaped inspection object S wound around the unwinding roller 36 positioned on the right side of the paper surface of FIG. . Then, the strip-shaped inspection object S is successively wound up on the winding roller 37 positioned on the left side in the plane of FIG. The optical inspection machine 40 inspects defects and the like in a portion where the strip-shaped inspection object S is horizontally conveyed between the unwinding roller 36 and the winding roller 37 .

As shown in FIG. 3, the optical inspection machine 40 according to the present embodiment includes a light projecting unit 33 for irradiating the surface of the strip-shaped inspection object S to be inspected with a light projecting unit 33, An imaging unit 30 for imaging the inspection position DL on the surface of the band-shaped object S to be inspected and an analysis unit 35 for determining the presence or absence of a flaw or the like based on the signal imaged by the imaging unit 30 are provided. Note that the analyzing section 35 is electrically connected to the light projecting section 33 and the photographing section 30, and also has a function of controlling the operations of both.

As shown in FIG. 4 , the imaging section 30 includes an imaging section 31 and a lens 32 . The imaging unit 31 receives the light reflected from the surface of the inspection target S among the light emitted from the light projecting unit 30 onto the surface of the strip-shaped inspection target S. of light receiving elements 31a. The lens 32 collects the reflected light and makes the collected light incident on the light receiving element 31 a of the imaging unit 31 .

In the photographing unit 30, if the surface of the belt-shaped inspection object S is smooth, the reflected light (specular reflection light) reflected at the same angle as the irradiation light on the surface of the belt-shaped inspection object S is reflected by the lens 32. are arranged so that the light is condensed by each of the light receiving elements 31a.

When the imaging unit 31 has a plurality of light-receiving elements 31a arranged side by side, such as a line sensor, the imaging unit 30 can detect the direction in which the plurality of light-receiving elements 31a are arranged and the belt-like object S to be inspected. It is arranged so as to be parallel to the width direction. In addition, the imaging unit 31 of the imaging unit 30 does not matter if it has a plurality of light receiving elements 31a, but even if it has a single light receiving element 31a, it has the same function and detects the light reflected on the surface of the strip-shaped inspection target S. There is no particular limitation as long as the device has the light receiving element 31a that can be used.

As shown in FIGS. 2 and 5, the light projecting portion 33 extends along the width direction of the belt-like inspection object S (the horizontal direction of the paper in FIG. 2, and the depth direction of the paper in FIGS. 3 and 5). It is capable of emitting substantially linear light parallel to the width direction of the band-shaped inspection target S.

As shown in FIG. 5, the light projecting section 33 has a light emitter 33a that emits light. The light emitter 33a is, for example, a rod-shaped fluorescent lamp arranged parallel to the width direction of the strip-shaped inspection object S, or a plurality of LED elements arranged in a row along the width direction of the strip-shaped inspection object S. Although the circuit etc. which were provided can be mentioned, it is not limited to this in particular.

Hereinafter, in the light projecting section 33 , the direction parallel to the width direction of the strip-shaped inspection target S is referred to as the axial direction of the light projecting section 33 . For example, if the luminous body 33a is a rod-shaped fluorescent lamp, the direction of the axis of the luminous body 33a is projected. It is called the axial direction of the optical part 33 .

In addition, in order to improve the inspection accuracy, in the running direction of the strip-shaped inspection object S (the vertical direction of the paper surface in FIG. 2, the left to right direction in FIG. 3, and the horizontal direction of the paper surface in FIG. 5), It is preferable that the width of the light irradiated to S is not so wide. The method of limiting the width in the running direction of the light irradiated to the strip-shaped inspection object S is not particularly limited, but for example, a light projecting section 33 having a structure as shown in FIG. 5 can be employed. That is, as shown in FIG. 5, the light projecting portion 33 is provided with a case 33b, and a light emitter 33a such as a fluorescent lamp or an LED element is accommodated in the case 33b. A light emitting window 33c that transmits light is formed in the case 33b, and irradiation light is emitted toward the strip-shaped object S to be inspected through the light emitting window 33c. Then, the width of the light irradiated to the belt-shaped inspection object S in the running direction, that is, the range in which the light is irradiated to the inspection object S in the running direction of the strip-shaped inspection object S can be limited.

In addition, in the width direction of the strip-shaped inspection object S, in order to reduce the variation in the intensity of the light irradiated onto the strip-shaped inspection object S and to irradiate the strip-shaped inspection object S with light of uniform intensity, it is necessary to project light. The portion 33 may include a light shielding member having a predetermined shape, or a scattering plate that diffuses and transmits light. For example, as shown in FIG. 5, when the light emitter 33a is housed in a case 33b and a light emission window 33c for transmitting light is formed in the case 33b, a scattering plate is provided in the light emission window 33c. can be installed.

Although the configuration of the optical inspection machine 40 using the inspection function confirmation device 10 according to this embodiment has been described, the configuration of the optical inspection machine 40 is not limited to this. For example, a configuration is conceivable in which the light projecting section 33 is a point light source and the imaging section 30 is longer than the width direction of the band-shaped inspection target S. Further, the light projecting unit 33 may be configured to diffusely reflect the light projected from the defect of the strip-shaped inspection object S to perform dark-field inspection. In addition, a case where at least one of the light projecting unit 33 and the photographing unit 30 is present in plural is also included. Furthermore, the case where the light projecting section 33 is interlocked with the photographing section 30 to perform pulse lighting is also included.

(Inspection function confirmation device 10)
FIG. 1 shows a cross-sectional view from the side of an inspection function confirmation device 10 according to the first embodiment of the present invention, FIG. 6 shows its plan view, and FIG. 7 shows its side view. The inspection function confirmation device 10 according to the present embodiment includes a sample table 11 capable of holding a part of the strip-shaped inspection target S, and a winding roller 37 from an unwinding roller 36 to a winding roller 37 on which the sample table 11 can hold the strip-shaped inspection target S. and a power unit that operates in a direction parallel to the direction of operation up to. The inspection function confirmation device 10 is detachable from the optical inspection machine 40 .

The inspection function confirmation device 10 includes an iron plate-shaped base 22 . This base 22 is colored black so as not to reflect the inspection light. This coloring is not particularly limited to black, but may be anything that can suppress reflection, such as plating, painting, and surface roughening. As shown in FIG. 6, the base 22 has a square base hole 22a. Although the base 22 is made of iron in this embodiment, it is not limited to this, and may be made of aluminum, stainless steel, an alloy thereof, or a resin material. Further, the shape of the base hole 22a provided in the base 22 is not particularly limited, but it is preferable that the sample is irradiated with the irradiation light or the like from obliquely below without being blocked. That is, with the sample as a reference point, it is preferable that irradiation light or the like having an angle of 30 degrees with respect to the vertical direction can be irradiated, more preferably 45 degrees, and most preferably 60 degrees.

The inspection function confirmation device 10 has a sample table 11 . As shown in FIGS. 1 to 6, the sample table 11 is a plate-like member and is arranged so that its thickness direction is vertical. On this sample table 11, a part of the strip-shaped object S to be inspected is held. The holding method of the strip-shaped object to be inspected S on the sample table 11 is not particularly limited. A portion of the band-shaped inspection object S is, for example, a sample of about 30 mm×50 mm in size, which is cut around the defective portion. The material of the sample table 11 is not particularly limited. For example, iron, aluminum, stainless steel, their alloys or resin materials can be used. The weight can be reduced in the case of aluminum and their alloys or resin materials. On the other hand, if it is iron or stainless steel, the hardness increases, so it is possible to increase the durability. The surface treatment of the sample table 11 is not particularly limited as long as the reflection can be suppressed, and plating, painting, surface roughening, etc. can be applied. Plating or painting makes it possible to suppress reflection at a low cost, and rough surface treatment can prevent problems such as peeling of the paint. As shown in FIG. 6, the sample table 11 is provided with a light passing portion 11a through which the irradiation light from the light projecting portion 33 passes. Although the light passing portion 11a has a hole shape in this embodiment, the shape is not particularly limited. In addition, it is preferable that the light passing portion 11a has no burrs, and that it is rounded or tapered. The sample table 11 is guided by linear guides 16 fixed on the base 22 .

Since the sample table 11 has the light passing portion 11a through which the irradiation light passes, the inspection function of the optical inspection machine 40 using transmitted light can be confirmed.

The inspection function confirmation device 10 has a power device that moves the sample table 11 in a direction parallel to the moving direction of the belt-like inspection object S. As shown in FIG. In FIGS. 1, 6 and 7, the movement direction of the strip-shaped inspection object S coincides with the left and right of the paper surface. The power unit of the inspection function confirmation device 10 according to the present embodiment converts the rotary operation of the motor 12 into linear motion by a crank, which is a type of link mechanism, so that the sample table 11 moves in the direction of movement of the strip-shaped object S to be inspected. to move in a direction parallel to

In this embodiment, the power unit includes a motor 12, a crank disc 13 attached to the tip of the rotating shaft of the motor 12, a rod end bearing 14 coupled to the crank disc 13, and the rod end bearing 14 and a connecting rod 15 connected at one end thereof, and another rod end bearing 14 connected at the other end of the connecting rod 15 . A rod end bearing 14 , which joins at the other end of the connecting rod 15 , joins the sample table 11 .

The motor 12 in this embodiment is a DC motor. A crank disk 13 is fitted to the tip of the rotating shaft of the motor 12 and fixed to the rotating shaft. One end of the crank disk 13 is fixed to the end of the rod end bearing 14 where the spherical slide bearing 14a is provided. One end of a connecting rod 15 is screwed into the other end of this rod end bearing 14 .

The end of another rod end bearing 14 is screwed into the other end of the connecting rod 15 . A spherical plain bearing 14 a is provided at the other end of the other rod end bearing 14 , and the end provided with the spherical plain bearing 14 a is coupled to the sample table 11 . .

With the above configuration, the distance between the spherical slide bearings 14a of the two rod end bearings 14 does not change, and the rotation of the motor 12 causes the sample table 11 to move linearly while being guided by the linear guides 16. It can be carried out. Also, since the crank mechanism is simple, it is excellent in terms of light weight, low power consumption, small size, and durability.

The inspection function confirmation device 10 according to this embodiment includes a portable power supply device 20 for supplying power to the power unit. A power plant is operated by the portable power supply device 20 . Specifically, the portable power supply device 20 is a plurality of primary batteries. Power from this portable power supply 20 is turned on and off by a switch 21 . The operating speed of the sample table 11 is preferably 3 m/min or higher, more preferably 5 m/min or higher, and particularly preferably 8 m/min or higher.

Since the power unit is operated by the portable power supply device 20, it is not necessary to supply power through a cable, making the use of the test function verification device 10 more flexible.

The inspection function confirmation device 10 according to the present embodiment is provided with a sample cover 17 that partially covers a strip-shaped inspection object S as a sample. The sample cover 17 is made of iron and colored black so as not to reflect inspection light. However, as in the case of the sample table 11, it is not limited to black. Further, the shape of the cover hole 17a provided in the sample cover 17 is not particularly limited, but it is preferable that the sample is irradiated with the oblique irradiation light or the like without being blocked. That is, with the sample as a reference point, it is preferable that irradiation light or the like having an angle of 30 degrees with respect to the vertical direction can be irradiated, more preferably 45 degrees, and most preferably 60 degrees. The inspection function confirmation device 10 is provided with a crank cover 25 covering the crank portion, a motor cover 23 covering the motor 12 , and a power supply device cover 19 covering the portable power supply device 20 . These covers are also made of iron like the sample cover 17 and colored black. In this embodiment, the sample cover 17 and other covers are made of iron, but the material is not limited to this, and may be made of aluminum, stainless steel, alloys thereof, or resin material. The weight can be reduced in the case of aluminum and their alloys or resin materials.

By providing the sample cover 17 that partially covers the band-shaped inspection object S, it is possible to suppress light other than the inspection light from the light projecting section 33, and to improve the accuracy of checking the inspection function. Also, the presence of the sample cover 17 makes it possible to prevent the drive unit from coming into contact with people or other devices.

The inspection function confirmation device 10 according to this embodiment has two threaded knobs 24 on a base 22 . The male-threaded knob 24 allows the inspection function confirmation device 10 to be detachable from the optical inspection machine 40 . Here, "detachable" means that the optical inspection machine 40 is not attached at least when the optical inspection machine 40 is performing roll-to-roll inspection. As a method for fixing the inspection function confirmation device 10 to the optical inspection machine 40, as described above, a screw mechanism such as the male-threaded knob 24 may be used, pins may be used for fixing, or magnetic force may be used for fixing. Various clamps can be used. Among these clamps, the externally threaded knob 24 is preferable because it can fix the inspection function confirmation device 10 to the optical inspection machine 40 without using a tool.

Since the inspection function confirmation device 10 according to the present embodiment has a simple configuration, the size and weight can be reduced. In addition, since it is possible to measure a sample from one roller to another roller, that is, a portion that is not in contact with the roller, the following effects can be obtained.
(1) When the inspection is performed at the portion in contact with the roller, the strip-shaped inspected object S may be stretched by the roller and loose irregularities may disappear, but such a problem does not occur.
(2) When inspection is performed on a portion in contact with the roller, it is conceivable that inspection may not be possible due to reflection from the roller surface, but such problems do not occur.
(3) When inspection is performed on a portion in contact with the roller, inspection using transmitted light cannot be performed, but such a problem does not occur.
(4) When inspection is performed on the part in contact with the roller, it is necessary to reproduce the shape of the part in contact with the roller with a small sample, which takes time and effort. does not occur.
The weight of the inspection function confirmation device 10 is preferably 10 kg or less, more preferably 2 kg or less, and particularly preferably 500 g or less. This is because the load on the light source or the production line can be reduced when the optical inspection machine 40 is fixed and installed. Further, regarding the size, it is preferably 50 cm or less in the horizontal direction in FIG. 1, and more preferably 20 cm or less.

Although the inspection function confirmation device 10 according to this embodiment has been described based on the drawings, the configuration of the inspection function confirmation device 10 is not limited to this configuration. For example, a rack and pinion system, a ball screw system, or a linear motor system can be adopted as the power unit. In this case, the motor 12 is preferably a stepping motor or a servomotor. Moreover, these torques are preferably 1 Nm or more, and particularly preferably 10 Nm or more. This makes it possible to move the sample table quickly and smoothly. Also, the moving distance of the sample is preferably 10 mm or more, more preferably 20 mm or more, and particularly preferably 30 mm or more. This makes it possible to apply the present invention even to large defects. On the other hand, it is preferable that the fixed shape of the sample holder, the size of the light passage part, and the moving range of the sample are designed so that the sample does not deviate from the range viewed by the camera due to the large moving distance. This makes it possible to prevent parts other than the sample, such as the sample holder, from entering the field of view of the camera during inspection and being erroneously detected as defects.

Also, the sample table 11 may adopt a structure that can move in the vertical direction. Specifically, it is possible to provide a lifter that operates vertically between the rod end bearing 14 and the sample table 11 or to provide a lifter on the lower surface of the base 22 . If the structure is movable in the vertical direction, it becomes easier to focus on the object S to be inspected, which is a sample. In addition, it is also possible to introduce a mechanism capable of adjusting the belt-like inspection object S in the transport direction, width direction, and inclination direction. In this case, it becomes possible to easily move the sample to the position DL where the optical inspection machine 40 is inspecting. These mechanisms include those with flexibility in fixing positions, such as the hole into which the male-threaded knob 24 is inserted in FIG. is mentioned.

Further, in this embodiment, the belt-shaped inspection object S conveyed from one roller to another roller is horizontally conveyed as shown in FIG. Although the configuration in which the sample table 11 of the inspection function confirmation device 10 operates horizontally has been described above, the configuration is not limited to this configuration. For example, when the strip-shaped object S to be inspected is conveyed at a predetermined angle from the horizontal, the sample table 11 moves according to the predetermined angle.

(How to use the inspection function confirmation device 10)
FIG. 8 shows an explanatory diagram of how to use the inspection function confirmation device 10 according to this embodiment. FIG. 8 shows an outline of the inspection function confirmation device 10 of FIG. 1 together with the optical inspection machine 40 of FIG.

First, the user of the inspection function confirmation device 10 (mainly an employee of the first manufacturer) stops the operation of the belt-shaped inspection object S from the unwinding roller 36 to the winding roller 37, and removes the belt-shaped inspection object S. Remove from the optical inspection machine 40 . Then, the user attaches the pedestal 27 to the main body of the optical inspection machine 40 or the like, and attaches the inspection function confirmation device 10 to the pedestal 27 . At this time, the height of the sample table 11 of the inspection function confirmation device 10 is the height of the sample of the strip-shaped test object S attached on the sample table 11 when moving from the unwinding roller 36 to the winding roller 37. It is made to be the same as the height of the strip-shaped inspection object S.

Next, the user of the strip-shaped object to be inspected S drives the power unit with the switch 21 to move the sample table 11 in the lateral direction on the paper surface of FIG. While operating in this manner, the user can operate the optical inspection machine 40 to irradiate the inspection light from the light projecting section 33, photograph the reflected light by the photographing section 30, and detect defects by the analyzing section 35. Check whether

Since the inspection function confirmation device 10 has a power device that moves the sample table 11 in a direction parallel to the movement direction of the strip-shaped inspection object S, defects such as scratches can be detected in a posture in which defects such as scratches are actually inspected. Since the function to be detected can be confirmed, the detection function can be reliably confirmed. That is, the first manufacturer, which is the manufacturer of the strip-shaped object S to be inspected, can check defects such as scratches on site without requesting the manufacturer of the optical inspection machine 40 . As a result, it is possible to prevent quality information from being leaked to the manufacturer of the optical inspection machine 40 or the like.

In addition, since the inspection function confirmation device 10 is detachable from the optical inspection machine 40, the optical inspection machine 40 does not need to always include the inspection function confirmation device 10, and the size of the optical inspection machine 40 is increased. No need. In addition, the user of the inspection function confirmation device 10 can attach it to an inspection device manufactured by another manufacturer and check the inspection function of the inspection device. That is, by using the inspection function confirmation device 10 for a plurality of optical inspection machines 40, it is possible to confirm individual differences in cameras and the like, and uniform detection performance. It can also be used for regular inspection of the optical inspection machine 40 .

In this specification, the inspection function confirmation device 10 is used by, for example, a user who is an employee of the first manufacturer, and the usage method is described for the user to confirm the inspection function, but the method is not limited to this. For example, when an employee of the first manufacturer confirms the inspection function, the inspection function confirmation device 10 is provided with a communication function so that a person from the manufacturer of the optical inspection machine 40 can confirm the inspection function. can be used to obtain information for remote maintenance.

REFERENCE SIGNS LIST 10 inspection function confirmation device 11 sample table 11a light passing portion 17 sample cover 20 portable power supply device 40 optical inspection machine S strip-shaped object to be inspected

Claims (5)

An optical inspection machine for inspecting a belt-shaped inspection object conveyed from one roller to another roller by reflection, transmission or scattering of irradiated light from the one roller to the other roller. A step of attaching an inspection function confirmation device that is detachable to the optical inspection machine;
A step of attaching a part of the strip-shaped object to be inspected, which is determined to have defects by an inspection machine other than the optical inspection machine, to a sample table provided in the inspection function confirmation device;
a step of moving the sample table in a direction parallel to the movement direction from the one roller to the other roller of the strip-shaped object to be inspected by a power unit provided in the inspection function confirmation device; ,
A step of irradiating the inspection light from the optical inspection machine while operating the sample table, and confirming whether defects existing in a part of the strip-shaped inspection object can be detected;
including,
A method for checking the inspection function of an optical inspection machine. The sample table is
Having a light passage part for the irradiation light to pass through,
2. The inspection function confirmation method for an optical inspection machine according to claim 1, wherein: A sample cover is provided to cover a portion of the strip-shaped test object,
3. The inspection function confirmation method of an optical inspection machine according to claim 1 or 2, characterized in that: The power unit is
operated by a portable power supply,
4. The inspection function confirmation method for an optical inspection machine according to claim 1, wherein: An inspection function confirmation device used in the inspection function confirmation method for an optical inspection machine according to any one of claims 1 to 4,
a sample table capable of holding a portion that is part of the strip-shaped object to be inspected and that is determined to have defects by an inspection machine other than the optical inspection machine;
a power device for moving the sample table in a direction parallel to the movement direction from the one roller to the other roller of the strip-shaped inspection object;
Detachable from the optical inspection machine,
An inspection function confirmation device characterized by:

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