WO2023058435A1

WO2023058435A1 - Inspecting device and inspecting method

Info

Publication number: WO2023058435A1
Application number: PCT/JP2022/034690
Authority: WO
Inventors: 良悟伊藤; 杉彦油井; 雅人横田; 健人白鞘; 敦則渡邊
Original assignee: 三菱重工機械システム株式会社
Priority date: 2021-10-04
Filing date: 2022-09-16
Publication date: 2023-04-13
Also published as: JP2023054406A

Abstract

The objective of the present invention is to provide an inspecting device capable of determining proper fitting or improper fitting of a fitted object, while minimizing the impact on the conveying speed of a fitting target object. The present invention relates to an inspecting device for determining a fitting state of a fitted object which is fitted to a fitting target object being conveyed from upstream to downstream. The inspecting device comprises: a first means for identifying a reference position in the fitting target object; a second means for setting a determination indicator in the fitting target object on the basis of the reference position identified by the first means; and a third means for identifying a positional relationship between the determination indicator set by the second means and the fitted object.

Description

Inspection device and inspection method

The present disclosure relates to an apparatus and method for inspecting whether or not an object to be worn is correctly attached to an object to be worn.

Conventionally, there has been known a device for inspecting whether or not a cap as an object to be attached is correctly attached to the spout of a container as an object to be attached. Examples of improper fitting include oblique fitting and insufficient tightness. Taking a cap and a container as an example, oblique covering refers to a state in which the central axis of the cap is inclined with respect to the central axis of the container. Insufficient tightening refers to a state in which the cap does not reach a predetermined position of the drinking spout. Hereinafter, in the present disclosure, improper mounting including these two states may be referred to as improper mounting, and conversely, correct mounting may be referred to as normal mounting.

Patent Document 1 discloses a device for inspecting whether a cap is properly attached or not properly attached to a container. The inspection apparatus of Patent Literature 1 sets a plurality of inspection areas at predetermined locations in image data of the cap and the periphery of the cap obtained by a camera irradiated with inspection light. This inspection area is denoted as W1 to W6 in Patent Document 1 and is partially superimposed on the cap in the obtained image data. Patent Document 1 measures the area and position of a portion of the inspection area that is not superimposed on the image data and through which the inspection light passes, and determines regular or irregular wearing based on the measurement results. For example, for the inspection area (W1 or W4) superimposed on the top surface (top surface) side of the cap, if the area through which the inspection light passes is smaller than a predetermined lower limit, the position of the top surface of the cap is too high. Therefore, it is determined that the tightening amount of the cap is insufficient.

JP-A-10-019509

According to the inspection device of Patent Document 1, it is possible to accurately determine whether the cap is properly attached to the mouth of the container or not. However, in Patent Literature 1, it is necessary to specify the area and position through which the inspection light passes, and it takes time for arithmetic processing therefor. For example, in order to increase the production efficiency of beverages, it is desirable to transport containers as fast as possible, but this arithmetic processing can be a factor that hinders high-speed transport of containers.

As described above, the present disclosure provides an inspection device and an inspection method that can determine whether an object to be attached, such as a cap, is properly attached or not while minimizing the influence on the conveying speed of an object to be attached, such as a beverage container. intended to provide

TECHNICAL FIELD The present disclosure relates to an inspection device that determines the wearing state of a wearable object attached to a wearable object conveyed from upstream to downstream.
This inspection apparatus includes first means for specifying a reference position on the object to be worn, second means for setting a determination index based on the reference position specified by the first means, and determination index set by the second means. and a third means for determining the wearing state based on the positional relationship between the and the wearable object.

The present disclosure also provides an inspection method for determining the mounting state of a wearable object attached to a wearable object conveyed from upstream to downstream.
This inspection method includes a first procedure of specifying a reference position on the object to be worn, a second procedure of setting a determination index on the object to be worn based on the reference position specified by the first procedure, and a second procedure. and a third step of determining the wearing state based on the positional relationship between the set determination index and the wearable object.

According to the inspection device or inspection method of the present disclosure, by specifying the positional relationship between the determination index and the wearable item, it is possible to determine whether the wearable item is properly worn or not. Here, the positional relationship between the determination index and the object to be worn can be specified by the overlapping relationship between the two in the image data, and there is no need for arithmetic processing. Therefore, according to the inspection apparatus or inspection method of the present disclosure, it is possible to determine whether the wearable object is properly worn or not, while minimizing the influence on the conveying speed of the worn object.

1 is a front view showing a schematic configuration of an inspection device according to an embodiment of the present disclosure; FIG. 1 is a side view showing a schematic configuration of an inspection device according to an embodiment of the present disclosure; FIG. From the left side of the drawing, a container shifted higher than the reference, a container at the reference height, and a container shifted lower than the reference are shown. From the left side of the figure, the cap is loosely attached, the container is normally attached, and the cap is obliquely attached, and the container is not normally attached. It is a figure which shows the determination procedure about the container to which the cap was normally attached, and from the left side, the specification procedure of a neck ring, the specification procedure of a top surface, and the setting procedure of a determination area are shown. FIG. 10 is a diagram showing a determination procedure for an irregularly attached container in which the cap is obliquely worn, showing, from the left, a neck ring specifying procedure, a top face specifying procedure, and a determination area setting procedure. FIG. 10 is a diagram showing a determination procedure for an irregularly mounted container whose cap is not completely closed, showing, from the left, a neck ring identification procedure, a top face identification procedure, and a judgment region setting procedure. It is a flow chart which shows the inspection procedure of the inspection device concerning an embodiment. FIG. 10 is a diagram showing another example of setting a determination region; FIG. 10 is a diagram showing still another example of setting a determination region; It is a figure which shows the example which sets a judgment line segment. It is a figure which shows the example which sets determination light.

Hereinafter, an inspection apparatus 1 according to an embodiment will be described with reference to the accompanying drawings.
The inspection device 1 determines, for example, whether the cap 110 is properly attached to the drinking spout of the resin-made container 100 for beverages or not. Incorrect wearing includes both oblique wearing and insufficient tightening, as described above.
Hereinafter, the inspection apparatus 1 will be described in the order of the overall configuration, its operation, determination procedure, and effects.

[Overall configuration of inspection device 1: FIGS. 1 and 2]
As shown in FIGS. 1 and 2, the inspection apparatus 1 includes a conveyor 10 which is means for carrying a plurality of containers 100 placed thereon, and an imaging region PP to which the cap 110 of the container 100 carried by the conveyor 10 is attached. and a camera 20 for photographing. Moreover, as shown in FIG. 1 , the inspection apparatus 1 includes a backlight 30 provided at a position facing the camera 20 with the conveyor 10 interposed therebetween, and an inspection point IP between the camera 20 and the backlight 30 for the container 100 . and a second detection sensor 45 that detects the container 100 (cap 110) that has passed through the inspection point IP. The inspection apparatus 1 also includes a controller 50 that controls operations and processes of the conveyor 10, the camera 20, the backlight 30, and the first detection sensor 40. FIG.

[Conveyor 10: FIGS. 1 and 2]
The conveyor 10 conveys the container 100 with the cap 110 attached from upstream (U) to downstream (D) as shown in FIG. The direction of this transport is indicated by an outline arrow. As shown in FIGS. 1 and 2, an inspection point IP is provided in the middle of the conveyer 10 conveying the container 100 from upstream (U) to downstream (D). The inspection point IP, indicated by a two-dot chain line, has a volume that accommodates the container 100 including the cap 110 . When the container 100 conveyed on the conveyor 10 reaches the inspection point IP, a determination is made as to whether the cap 110 is correctly installed.

The conveyor 10 is, for example, a belt conveyor, and a conveyor belt 11 driven by a drive source 12 conveys the container 100 thereon. The conveyor belt 11 has an endless track, and includes an outward path 13 for carrying the container 100 thereon and a return path 15 after the container 100 is transferred downstream (D) from the conveyor 10 .

The conveyor 10 can convey the containers 100 continuously or can convey the containers 100 intermittently. Conveyor 10 operates according to instructions from controller 50 .
In the case of continuous transportation, it is determined whether or not the cap 110 is correctly attached while the container 100 passes the inspection point IP. When conveying continuously, the conveying speed can be made constant or variable. When the transport speed is made variable, the transport speed when the container 100 reaches the inspection point IP and it is determined whether or not the cap 110 is correctly attached is made slower than the transport speed in other regions. be able to.
In the case of intermittent transportation, when the container 100 reaches the inspection point IP, the operation of the conveyor 10 is stopped, and it is determined whether the cap 110 is attached correctly.

[Camera 20: FIGS. 1 and 2]
The camera 20 photographs the imaging portion PP of the container 100 that has reached the inspection point IP based on the instruction from the controller 50 . The imaging part PP includes the cap 110 attached to the container 100 and its surroundings. A specific example thereof will be described later. The captured image data (ID) is sent from the camera 20 to the controller 50 .

As the camera 20, a digital camera using CCD (Charge Coupled Devices), CMOS (Complementary Metal Oxide Semiconductor), or the like as an imaging element is preferably applied.

[Backlight 30: FIGS. 1 and 2]
The backlight 30 irradiates light toward the container 100 and the cap 110 included in the inspection point IP, and particularly makes the outline of the cap 110 clear so that it can be photographed by the camera 20 .
The backlight 30 is composed of, for example, an LED (Light Emitting Diode) and emits light toward the camera 20 and the container 100 based on instructions from the controller 50 . In other words, light can be emitted when the container 100 reaches the inspection point IP and the camera 20 photographs the photographing portion PP for determination. Alternatively, the backlight 30 may emit light while the conveyor 10 conveys the containers 100 .

1 and 2, as a preferred example, the backlight 30 is provided at a position facing the camera 20 with the conveyor 10 interposed therebetween. may be provided with a camera 20.

[First detection sensor 40: FIGS. 1 and 2]
The first detection sensor 40 detects that the container 100 conveyed by the conveyor 10 has reached the inspection point IP, and this detection information is sent to the controller 50 . When the controller 50 acquires this detection information, it instructs the camera 20 to take an image, and determines whether the cap 110 is properly attached or not, as will be described later.

As an example of the first detection sensor 40, a fiber sensor using an optical fiber is applied. A reflective sensor, for example, is applied as the fiber sensor. In other words, the light projecting element and the light receiving element are integrally formed, and the inspection light emitted from the light projecting element is applied to the cap 110, which is the object to be detected, and the reflected light is received by the light receiving element. has reached the inspection point IP.

Here, the first detection sensor 40 is provided above the conveyor 10, and an example is shown in which the cap 110 is detected from the vertical direction. A first detection sensor 40 may be provided to detect the cap 110 from the horizontal direction.

[Second detection sensor 45: FIGS. 1 and 2]
The second detection sensor 45 detects the cap 110 of the container 100 immediately after passing the inspection point IP, and this detection information is sent to the controller 50 . As a result, the controller 50 associates the container 100 with the determination result. That is, when the controller 50 makes a determination (regular attachment or irregular attachment) based on the detection of the cap 110 by the first detection sensor 40, the container 100 related to the cap 110 is detected by the second detection sensor 45. Then, the controller 50 specifies the determination result for the container 100 .
A fiber sensor similar to the first detection sensor 40 can be used as the second detection sensor 45 .

[Controller 50: FIGS. 1 and 2]
Next, the controller 50 that controls the operation and processing of the inspection apparatus 1 will be described.
The controller 50 includes an operation instruction section 51, a determination section 53, and a storage section 55, as shown in FIG. The divisions of the operation instruction unit 51, the determination unit 53, and the storage unit 55 are for convenience of explanation of the controller 50, and other divisions can be adopted in the actual controller 50. FIG. Note that the determination unit 53 of the controller 50 corresponds to the first means, the second means and the third means according to the present disclosure, and participates in the execution of the first procedure, the second procedure and the third procedure according to the present disclosure.

[Operation instruction unit 51]
The operation instruction unit 51 instructs the operations of the conveyor 10 , the camera 20 , the backlight 30 , the first detection sensor 40 and the second detection sensor 45 . The contents of the operation are as explained in the section of the conveyor 10 to the second detection sensor 45. FIG. Data about the content of each instruction is stored in the storage unit 55, and the operation instruction unit 51 reads necessary data from the storage unit 55 and instructs the conveyor 10 to the second detection sensor 45 to operate based on the data. .

The operation regarding the container 100 according to the instruction of the operation instruction unit 51 will be described below.
The container 100 is placed on the conveyor 10 and conveyed from upstream (U) to downstream (D). A plurality of containers 100 are placed in a row on the conveyor 10 at predetermined intervals.
When the plural containers 100 reach the inspection point IP in the process of being conveyed downstream (D), the first detection sensor 40 detects the presence of the containers 100 and the detection information is sent to the controller 50 . Based on this detection information, the controller 50 instructs the camera 20 to photograph the imaging region PP. Along with this instruction, the backlight 30 is also instructed to emit light, and the contour of the cap 110 is clearly photographed by the camera 20 . The imaging data of the imaging part PP that has been imaged is sent to the determination unit 53 of the controller 50 .

[Determination unit 53]
The determination unit 53 determines whether or not the cap 110 is correctly attached based on the photographed data of the photographed part PP that has been photographed by the camera 20 and sent. This determination is divided into regular wearing and irregular wearing. The container 100 is conveyed downstream (D) when it is judged to be properly mounted. are rejected on the conveyor 10 en route to the final transfer point. A specific procedure for determination will be described later.

Any method can be used to exclude the container 100 determined to be improperly mounted from the conveyor 10, but in order to identify the container 100, the determined order and the improperly mounted determination need to be linked. Therefore, when the imaging data of the imaging region PP is received, the determination unit 53 assigns the received order to the imaging data. For example, the photographing data sent first after a series of determination operations are started is called "photographing data_#1", and the photographing data sent 50th is called "photographing data_#50". For example, the order should be included in the file name.
Then, when the determination unit 53 determines that the “imaging data_#1” is not properly worn, the “imaging data_#1” is associated with the determination of the improper wearing. Further, if the normal wearing determination is made for the "imaging data_#50", the "imaging data_#50" and the normal wearing determination are linked.
The container 100 in that order is removed from the conveyor 10 based on the result of this stringing.

[Storage unit 55]
The storage unit 55 stores data necessary for the operation of the inspection device 1 . The data includes those necessary for the operation instruction unit 51 to instruct the conveyor 10 to the second detection sensor 45, those necessary for the determination unit 53 to determine whether the cap 110 is correctly attached, contains. The latter will be mentioned in the specific procedure for determination.

[Regarding judgment: FIGS. 3, 4, 5, 6, and 7]
Next, the determination of whether the cap 110 is correctly attached will be described.
First, one of the problems in making the determination will be described with reference to FIG.
When conveyed by the conveyor 10, the container 100 is inevitably displaced in the vertical (height) direction. That is, the container 100 moves up and down between the highest position on the left side of FIG. 3 and the lowest position on the right side of FIG. 3 at the position where the determination is made. As a result, the position of the top surface 111 of the cap 110 is also displaced in the height direction. Therefore, if the mounting state of the cap 110 is determined simply based on the position of the top surface 111, the determination may be erroneous.

On the other hand, even if the container 100 moves up and down, if the cap 110 is attached accurately, the distance H from a specific part of the container 100, for example, the neck ring 103 to the top surface 111 of the cap 110 can be considered constant. can. Therefore, in this embodiment, the determination is performed using the distance H from the neck ring 103 to the top surface 111 .

The gist of determining whether or not the cap 110 is correctly attached using the distance H will be described with reference to FIG.
In FIG. 4 , the left side (L) shows insufficient seaming, the center (C) shows the cap 110 properly attached state, and the right side shows the oblique covering (R). Here, a line segment at a distance H from the neck ring 103 and orthogonal to the central axis C of the container 100 is defined as a determination index IL. Then, in the normal wearing state, the judgment index IL and the top surface 111 match, and the judgment index IL does not overlap with the cap 110 . On the other hand, the determination index IL overlaps with the cap 110 for insufficient seaming and oblique covering. Based on the difference in overlapping relationship between the determination index IL and the cap 110, it is determined whether or not the cap 110 is correctly attached by distinguishing between the normal wearing state and other cases such as insufficient seaming and oblique covering. It can be performed. Hereinafter, the determination contents of the normal wearing state, oblique covering, and insufficient seaming will be described with reference to FIGS. 5, 6, and 7 in order. In any determination, it is assumed that when the container 100 reaches the inspection point IP, the camera 20 takes an image of the imaged part PP, and the imaged data is sent to the determination unit 53 of the controller 50 .

First, with reference to FIG. 5, the determination of proper wearing will be described.
Upon receiving the imaging data of the imaging part PP, the determination unit 53 specifies the neck position NP, which is the position of the neck ring 103, based on the imaging data, as shown in FIG. 5 (1st). The determination unit 53 can identify the neck position NP in the photographed data by comparing the model image of the container 100 read from the storage unit 55 with the photographed data.

After specifying the neck position NP, the determination unit 53 specifies the virtual top surface position TP with reference to the neck position NP, as shown in FIG. 5 (2nd). The virtual top surface position TP can be specified by adding the distance H with reference to the neck position NP. This identification is performed in the imaging data of the imaging region PP. When the cap 110 is properly attached, the virtual top surface position TP and the position in the height direction of the top surface 111 in the imaging data match.

After specifying the virtual top surface position TP, the determination unit 53 sets the determination index JI so that the lower side of the virtual top surface position TP matches the virtual top surface position TP, as shown in FIG. 5 (3rd). Here, as an example, a rectangular judgment index JI having a predetermined area indicated by a dashed line is shown. The judgment index JI corresponds to the judgment area of the present disclosure. In the normal wearing state, as shown in FIG. 5 (3rd), the judgment index JI is only in contact with the virtual top surface position TP at its lower side, and the judgment index JI and the cap 110 do not overlap. Therefore, the determination unit 53 determines the normal wearing state.

Next, with reference to FIG. 6, determination of oblique fogging (non-regular determination) will be described. In FIG. 6, the identification of the neck position NP, the identification of the imaginary top surface position TP, and the setting of the judgment index JI are performed in the same procedure as for the judgment of the normal wearing state, except that the cap 110 is obliquely covered. Therefore, the description here is omitted. The same applies to the determination of insufficient seaming.

In oblique fogging, as shown in FIG. 6 (3rd), the determination index JI and the cap 110 overlap. Therefore, the determination unit 53 makes an irregular determination.
As shown in FIG. 7 (3rd), the determination index JI and the cap 110 overlap with each other even when the seam is insufficient. Therefore, the determination unit 53 makes an irregular determination.

It is not possible to distinguish between oblique covering and insufficient seaming based only on the presence or absence of overlap between the judgment index JI and the cap 110 . However, in the case of oblique covering, the overlap is partial in the radial direction of the cap 110 as shown in FIG. The entire radial dimension of 110 overlaps. Therefore, by selecting partial overlap or overall overlap, the determination unit 53 can distinguish between oblique covering and insufficient seaming. However, as long as the garment is removed from the conveyor 10 in any improperly worn state, there is little need to distinguish between the obliquely covered garment and the insufficiently tightened seam.

[Judgment flow: Fig. 8]
The gist of the procedure for determining the attached state of the cap 110 to the container 100 described above will be described with reference to the flowchart shown in FIG. In addition, as shown in FIG. 2, it is assumed that a plurality of containers 100 are lined up in a line and continuously conveyed by the conveyor 10 .
When the container 100 is transported under the first detection sensor 40, the first detection sensor 40 detects that the container 100 to be inspected has reached the inspection point IP (Fig. 8 S101). This detection information is immediately sent to the controller 50. In response to this, the operation instruction unit 51 instructs the camera 20 to photograph the imaging region PP, and the camera 20 photographs the imaging region PP (FIG. 8). S103). The imaging data is sent to the determination section 53 of the controller 50 .

The determination unit 53 sets the neck position NP and the virtual top surface position TP by referring to the received photographing data (S105 in FIG. 8). Based on the set virtual top surface position TP, the determination unit 53 sets and draws the determination index JI in the photographed data (S107 in FIG. 8).
Next, the determination unit 53 confirms whether or not the cap 110 is overlapped and reflected in the determination index JI. If the cap 110 is not overlapped in the determination index JI (none), the determination unit 53 determines that it is properly worn (S109 in FIG. 8). If the cap 110 is overlapped in the determination index JI (yes), the determining unit 53 determines that it is improperly worn (S111 in FIG. 8). The determination procedure for one container 100 is completed by determining whether it is properly installed or not properly installed. Wearing is determined. However, it is preferable that the container 100 that is determined to be improperly mounted is removed during the process of being conveyed by the conveyor 10, as described above.

[effect]
Determining whether or not the cap 110 is correctly attached by the inspection apparatus 1 has the following effects.
According to the inspection device 1 or the inspection method, it is possible to determine whether the cap 110 is properly attached to the container 100 or not by specifying the positional relationship between the determination index JI and the cap 110 that is the object to be attached. Here, the positional relationship between the determination index JI and the cap 110 can be specified by the overlapping relationship between the two in the image data, and there is no need for arithmetic processing. Therefore, according to the inspection device 1 and its inspection method, it is possible to determine whether the cap 110 is properly attached or not, while minimizing the influence on the conveying speed of the container 100 .

Further, according to the inspection apparatus 1, the virtual top surface position TP is specified with reference to the neck ring 103 specified from the imaging data of the imaging part PP. Here, since the neck ring 103 of the container 100 is a part of the container 100, even if the container 100 moves up and down with respect to the reference height at the inspection point IP, the distance from the neck ring 103 to the virtual top surface position TP is The distance H remains unchanged. The determination index JI is set with reference to the virtual top surface position TP. Therefore, even if the container 100 moves up and down, the determination of proper attachment of the cap 110 based on whether or not the cap 110 overlaps the determination index JI in the imaging data is less affected by the movement of the container 100 as it moves.

In addition to the above, it is possible to select the configurations mentioned in the above embodiments or change them to other configurations as appropriate.

[Position of judgment index JI: FIGS. 9 and 10]
According to the embodiment described above, the determination index JI is set along the virtual top surface position TP, but the setting position of the determination index JI in the present disclosure is not limited to this. For example, as shown in FIG. 9, a determination index JI can be provided along side 113 of cap 110 . Even in this case, the determination index JI and the cap 110 are only in contact with each other and do not overlap in the normal wearing (FIG. 9(L)), whereas in the oblique wearing (FIG. 9(R)) which is the irregular wearing, , the judgment index JI and the cap 110 overlap with the side surface 113 .
Further, for example, as shown in FIG. 10, the determination index JI can be provided so as to be in contact with the corner 115 of the cap 110 at a predetermined angle. Even in this case, the judgment index JI and the cap 110 are only in contact with each other and do not overlap in the regular wearing (FIG. 10(L)). , the judgment index JI and the cap 110 overlap at the corner 115. FIG.

[Alternative to judgment index JI (Part 1): Fig. 11]
According to the embodiment described above, the determination index JI having the predetermined area is set, but the determination index according to the present disclosure is not limited to the area having the area. For example, as shown in FIG. 11, a linear determination index JI can also be used. This linear determination index corresponds to a determination line segment having a predetermined length according to the present disclosure. The linear determination index JI is composed of a solid line that continues from one end to the other end, but may be composed of a broken line or a chain line that has intermittent portions.

[Alternative for judgment index JI (Part 2): Fig. 12]
According to the embodiment described above, the determination index JI as graphic data is set as the determination index, but the determination index JI according to the present disclosure is not limited to graphic data. For example, as shown in FIG. 12, it is also possible to irradiate inspection light IL as a determination index along a line corresponding to the linear determination index JI.
If the cap 110 were obliquely covered as shown on the right side (R) of FIG. Can not. Although illustration is omitted, all of the inspection light IL hits the cap 110 and cannot pass to the rear of the cap 110 that is insufficiently seamed.
On the other hand, if the cap 110 is normally mounted as shown in the left side (L) of FIG. 12, all of the inspection light IL passes behind the cap 110 without hitting the cap 110. have a positional relationship. Therefore, it is possible to provide a light-receiving element for receiving the inspection light IL behind the cap 110, and to determine whether the cap 110 is in the properly attached state based on the form of the inspection light IL received by the light-receiving element. can. Laser light is preferably used as the inspection light IL.
As described above, the attachment state of the cap 110 can be determined based on the passing of the inspection light IL and the non-currency according to the positional relationship between the inspection light IL and the cap 110 as a determination index.

[Container reference position: Fig. 4]
According to the embodiment described above, the virtual top surface position TP is specified with the neck ring 103 as the reference position in the container 100, but the reference position of the container 100 in the present disclosure is not limited to this. For example, shape-specific portions such as the neck base 105 of the container 100 and the shoulder 107 of the container 100 shown in FIG. 4 can be used as reference positions.

[Inspection target]
Furthermore, in the above-described embodiment, it is determined whether or not the cap 110, which is an object to be attached, is properly attached to the container 100, which is an object to be attached. Therefore, the inspection targets according to the present disclosure are not limited to the container 100 and the cap 110, but can be inspection targets for the attachment and the attachment to which it is attached. Examples of objects to be inspected include nuts (attachments) and bolts (attachments), automobile parts (attachments) and members to which the parts are assembled (attachments). At least one of the object and the object to be worn may vibrate. A shape-specific portion is also specified in these wearable objects and wearable objects.

[Appendix]
The inspection apparatus 1 according to the first embodiment of the present disclosure determines the mounting state of the cap 110 as the attachment attached to the container 100 as the attachment that is conveyed from upstream to downstream.
The inspection apparatus 1 includes first means for specifying a reference position in the container 100, second means for setting a judgment index JI based on the reference position specified by the first means, and a judgment index set by the second means. and a third means for determining the wearing state based on the positional relationship between the JI and the cap 110 that is the object to be worn.

In the inspection device 1 according to the second aspect of the present disclosure, preferably, the first means sets the reference position based on image data obtained by photographing the container 100 including the cap 110, and the second means sets the image data, One or both of a region having a predetermined area and a line segment having a predetermined length are drawn as the determination index JI, and the third means is based on whether or not the cap 110 included in the image data overlaps the determination index JI. Determine the wearing state.
Here, the position of the wearable object in the non-formal wearing state is assumed with respect to the reference position, and the determination region and the determination line segment are drawn so as to be in contact with that position. When estimating the position of the object to be worn in an irregularly worn state, it is also possible to consider the interval corresponding to the error.

In the inspection apparatus 1 according to the third embodiment of the present disclosure, preferably the first means sets the shape-specific portion of the container 100 included in the image data as the reference position.

In the inspection apparatus 1 according to the fourth embodiment of the present disclosure, the first means preferably includes a first detection sensor 40 that detects the cap 110 from the vertical direction, and a camera 20 that captures image data. When the detection sensor 40 detects the cap 110, the camera 20 captures image data.

In the inspection device 1 according to the fifth embodiment of the present disclosure, the first means preferably includes a second detection sensor 45 that detects the cap 110 from the vertical direction downstream of the first detection sensor 40, and the third means , and a function of distinguishing between the wearable object and the wearable object in the state of an irregular wearable object based on the information detected by the second detection sensor 45 . The distinction here means removal from the transport path, marking to indicate that the device is in an irregularly mounted state, or the like.

In the inspection device 1 according to the sixth embodiment of the present disclosure, preferably, the attached object is the cap 110, and the attached object is the container 100 with the cap 110 screwed to its mouthpiece.

In the inspection apparatus according to the seventh aspect of the present disclosure, preferably, the first means sets the neck ring 103 of the container 100 to the reference position, the second means sets the determination index around the cap 110, The third means determines whether the cap 110 is attached to the container 100 .

In the inspection device according to the eighth aspect of the present disclosure, preferably the second means sets the determination index along the top surface of the cap (110).

An inspection method according to the ninth aspect of the present disclosure is a method for determining the mounting state of a mounting object (cap 110) mounted on a mounting object (container 100) conveyed from upstream to downstream, a first procedure for identifying a reference position on the wearable object (100); a second procedure for setting a determination index (JI) on the wearable object (100) based on the reference position specified by the first procedure; and a third procedure for determining the relationship between the determination index (JI) set by the second procedure and the wearable object (110).

1 Inspection device 10 Conveyor 11 Conveyor belt 13 Outbound path 15 Return path 20 Camera 30 Backlight 40 First detection sensor 45 Second detection sensor 50 Controller 51 Operation instruction unit 53 Judgment unit 55 Storage unit 100 Container 103 Neck ring 105 Neck root 107 Shoulder 110 Cap 111 Top surface 113 Side surface 115 Corner C Center axis IP Inspection point PP Imaging site NP Neck position TP Virtual top surface position IL Inspection light

Claims

An inspection device for determining the wearing state of a wearable object attached to a wearable object conveyed from upstream to downstream,
a first means for specifying a reference position on the wearable object;
a second means for setting a determination index based on the reference position specified by the first means;
a third means for determining the wearing state based on the positional relationship between the determination index set by the second means and the wearing object;
An inspection device comprising:
The first means is
setting the reference position based on image data obtained by photographing the object to be worn, including the object to be worn;
The second means is
depicting one or both of a determination region having a predetermined area and a determination line segment having a predetermined length as the determination index in the image data;
The third means is
Determining the wearing state based on whether or not the wearing item included in the image data overlaps with one or both of the determination region and the determination line segment;
The inspection device according to claim 1.
The first means is
setting a shape-specific portion of the wearing object included in the image data as the reference position;
The inspection device according to claim 2.
The first means is
a first detection sensor that detects the wearable object from a vertical direction;
a camera that captures the image data,
When the first detection sensor detects the wearable object, the camera captures the image data.
The inspection device according to claim 2 or 3.
The first means is
A second detection sensor that detects the wearable object from a vertical direction downstream of the first detection sensor,
The third means is
Based on the detection information by the second detection sensor, it has a function of distinguishing between the wearable object and the wearable object in an irregular wearable state,
The inspection device according to claim 4.
The attachment is a cap,
The object to be attached is a container to which the cap is screwed onto the spout.
The inspection device according to any one of claims 1 to 5.
The first means is
setting the neck ring of the container to the reference position;
The second means is
setting the determination index around the cap;
The third means is
determining the mounting state of the cap with respect to the container;
The inspection device according to claim 6.
The second means is
setting the determination index along the top surface of the cap;
The inspection device according to claim 7.
A method for determining the wearing state of a wearable object attached to a wearable object conveyed from upstream to downstream,
a first step of identifying a reference position on the object to be worn;
a second step of setting a determination index for the wearable object based on the reference position specified by the first step;
a third procedure for determining the relationship between the determination index set by the second procedure and the wearable object;
An inspection method comprising: