JP2003139723A - X-ray foreign matter detector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten an inspection time and to enhance inspection efficiency, by dividing an image processing area containing a transmission image data to allow concurrent inspection for a plurality of specimens. SOLUTION: This foreign matter detector 1 emits an X-ray to the plural specimens Wa, Wb to detect the presence of foreign matter d in the respective specimens Wa, Wb, based on a transmitted amount of the X-ray transmitted through the respective specimens in accompaniment to the emission of the X-ray. An image processing part 12 image-processes transmission data Ta, Tb. An area dividing part 14 divides the image processing area A provided by the image processing of the image-processed transmission data Ta, Tb into preset inspection areas Aa, Ab containing the transmission data Ta, Tb respectively. A judge-determining part 15 determines the presence of the foreign matter in each of the specimen Wa, Wb, based on the data Ta, Tb within the respective divided inspection areas Aa, Ab.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to, for example, raw meat, fish,
The present invention relates to an X-ray foreign matter detection device for detecting foreign matter in an inspected object based on the amount of X-ray transmission when the X-ray is exposed to the inspected object of each type such as processed foods and pharmaceuticals, and particularly to a plurality of inspected objects. The present invention relates to an X-ray foreign matter detection device that simultaneously inspects objects.

[0002]

2. Description of the Related Art An X-ray foreign matter detecting device irradiates an object to be inspected (raw meat, fish, processed foods, medicines, etc.) of each type, which is sequentially conveyed on a conveying line, with X-rays. It is an apparatus that detects whether or not a foreign matter such as metal, glass, stone, or bone is mixed in the object to be inspected from the amount of X-ray transmission.

FIG. 16 is a perspective view showing a conventional X-ray foreign matter detecting device of this type. As shown in the figure, the X-ray generator 51 is placed at a position where the inspection object W is conveyed on the conveyor 50.
, And the X-ray detector 52 is arranged to face. X-ray generator 51
Irradiates the inspected object W being conveyed with X-rays, and the X-ray detector 52
Outputs an electric signal corresponding to the amount of X-rays transmitted through the inspection object W. A processing unit (not shown) determines whether or not a foreign matter is mixed based on the amount of X-ray transmission.

However, in a normal inspection, the objects to be inspected are conveyed one by one and exposed to X-rays, and the result is displayed on a display unit (not shown). Therefore,
When inspecting a large number of inspection objects, the inspection time is long.

As a result, in the subsequent pass / fail selection, the objects to be inspected are processed one by one, and the selection time is extended for a long time like the inspection time.

If the inspection time and the selection time are long, X
Due to the handling of the wires, the worker also has to monitor the device for a long time, which is an excessive amount of labor.

Further, in order to improve the above efficiency, when a plurality of objects to be inspected are arranged in the width direction orthogonal to the carrying direction and an X-ray inspection is simultaneously performed, a transmission image obtained by this is displayed in one frame. The frame becomes the inspection area,
The presence or absence of foreign matter is inspected.

As a result, when it is determined that one of the inspection objects has a foreign matter and the other inspection object has no foreign matter, it is determined that the inspection area as a whole contains the foreign matter. An object to be inspected, which is not contaminated with foreign matter, is also erroneously determined to have foreign matter.

Therefore, it is treated as a defective product in the subsequent quality judgment, and simultaneous inspection of a plurality of inspection objects poses a problem in terms of foreign matter inspection accuracy.

[0010]

Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to divide an image processing area in which transparent image data is image-processed into a plurality of areas. It is to shorten the inspection time and improve the inspection efficiency by enabling simultaneous inspection of the inspection object.

Another object is to clarify the correspondence between each inspected object simultaneously inspected and its image-processed transmission data.

Still another object is to clarify the correspondence between each inspected object simultaneously inspected and its foreign matter determination result.

Another object is to simultaneously visualize each inspected object and its foreign matter determination result corresponding to each position of the inspected inspected object that is carried out. It is to improve the work efficiency of the sorting work.

Still another object is to fully automate the sorting operation of a plurality of inspected objects to be inspected simultaneously.

Another object is to increase or decrease the number of divisions of the image processing area using shape data obtained from a plurality of inspected objects each time the number of a plurality of inspected objects to be inspected increases or decreases. The aim is to fully automate multiple simultaneous inspections and to further improve inspection efficiency.

Still another object is to clarify the correspondence between each inspected object simultaneously inspected and the image-processed transmission data whenever the number of simultaneously inspected plural inspected objects increases or decreases. Is to try.

Another object is to clarify the correspondence relationship between each inspected object simultaneously inspected and its foreign matter determination result whenever the number of simultaneously inspected plural inspected objects increases or decreases. It is in.

Still another object is to simultaneously visually check the foreign matter determination result of each inspected object corresponding to each position of the inspected inspected object that is carried out whenever the plurality of inspected objects to be inspected simultaneously increase or decrease. It is intended to improve the work efficiency of the sorting work in the latter stage.

[0019]

In order to achieve the above object, an X-ray foreign matter detecting apparatus 1 according to claim 1 of the present invention irradiates a plurality of inspection objects W (Wa, Wb) with X-rays. , This X
An X-ray foreign matter detection device for detecting the presence or absence of a foreign matter d in each of the inspection objects Wa and Wb from the amount of X-rays transmitted through each of the inspection objects in association with the exposure of the radiation, An X-ray generator 5 that irradiates the inspection objects Wa and Wb with X-rays, and transmission data T (Ta, Tb) corresponding to the intensity of the X-rays that have transmitted through the inspection objects Wa and Wb. ) Output X-ray detector 6
An image processing unit 12 for image-processing the transparent data Ta, Tb; and an image processing area A on which the transparent data Ta, Tb are image-processed, and a preset inspection area including the transparent data Ta, Tb, respectively. An area dividing unit 14 that divides each of the inspection areas Aa and Ab, and each of the divided inspection areas Aa,
A determination unit 1 that determines the presence or absence of the foreign matter for each of the inspection objects Wa and Wb based on the transmission data Ta and Tb in Ab.
5 is provided.

In the X-ray foreign matter detecting device according to the first aspect, X-rays are irradiated to the plurality of inspection objects Wa and Wb. Inspected object Wa,
Transmission data Ta based on the transmission amount of X-rays transmitted through Wb,
The image of Tb is developed, and the image processing area A is set as the inspection object W.
The area is divided into inspection areas Aa and Ab for each a and Wb. Then, the presence or absence of the foreign matter d is determined for each of the divided inspection areas Aa and Ab.

Therefore, since it is possible to simultaneously determine the presence or absence of the foreign matter d for a plurality of inspection objects Wa and Wb, it is possible to improve the inspection efficiency by shortening the inspection time.

An X-ray foreign matter detecting device according to a second aspect is the X-ray foreign matter detecting device according to the first aspect, wherein the transmission data T in each of the divided inspection areas Aa and Ab is included.
It is characterized by comprising a transmission image display section 16 for displaying a and Tb in parallel along the parallel direction of the plurality of inspection objects Wa and Wb.

In the X-ray foreign matter detecting device according to the second aspect, a plurality of inspection objects Wa and Wb for simultaneously inspecting the image-processed transmission data Ta and Tb displayed on the transmission image display unit 16 are provided.
It is possible to visually discriminate which of the two corresponds to the arrangement of the transparent data Ta and Tb on the transparent image display unit 16.

Further, in the X-ray foreign matter detecting device according to the third aspect, in the X-ray foreign matter detecting device according to the first aspect, the determination result H of each of the inspection objects Wa and Wb by the determining unit 15 is H.
It is characterized by including a determination result display unit 17 that displays a and Hb in parallel for each of the inspection areas Aa and Ab along the parallel direction of the plurality of inspection objects Wa and Wb.

In the X-ray foreign matter detecting apparatus according to the third aspect, the determination results Ha and Hb of the inspection objects Wa and Wb displayed on the determination result display section 17 are inspected at the same time.
Which one of Wb is corresponded can be visually discriminated by the arrangement of the determination results Ha and Hb on the determination result display unit 17.

Further, in the X-ray foreign matter detecting device according to a fourth aspect, in the X-ray foreign matter detecting device according to the third aspect, each of the inspection objects Wa and Wb for which the presence or absence of the foreign matter d is determined is carried out. It has a carry-out port 3b, the judgment result display unit 17 is provided on the carry-out port 3b side, and the judgment result Ha, corresponding to the position of each of the inspection objects Wa, Wb carried out from the carry-out port 3b. The feature is that Hb is displayed.

In the X-ray foreign matter detecting device according to the fourth aspect, it is possible to visually recognize the plurality of inspected objects Wa and Wb simultaneously conveyed in parallel and the determination results Ha and Hb thereof in association with each other.

Further, the X-ray foreign matter detecting device according to the fifth aspect is the X-ray foreign matter detecting device 1 according to the first aspect, wherein it is determined that the foreign substance d is present based on the determination results Ha and Hb by the determining unit 15. It is characterized by comprising a sorting means 20 for sorting the inspected object Wa and the inspected object Wb determined to have no foreign matter d.

In the X-ray foreign matter detecting apparatus according to the fifth aspect, the sorting means 20 is interlocked with the judgment results Ha and Hb of the judging section 15 to thereby inspect a plurality of objects Wa and Wb to be inspected at the same time.
It is possible to improve the efficiency of the quality selection.

The X-ray foreign matter detecting device according to the sixth aspect irradiates a plurality of inspection objects Wa and Wb with X-rays,
An X-ray foreign matter detection device for detecting the presence or absence of foreign matter in each of the inspection objects Wa, Wb from the amount of X-rays transmitted through each of the inspection objects Wa, Wb due to the radiation of the radiation. X-ray generator 5 for irradiating the inspection objects Wa and Wb with X-rays, and transmission data Ta and Tb corresponding to the intensity of the X-rays transmitted through the inspection objects Wa and Wb. , An X-ray detector 6 for outputting the data, an image processing unit 12 for image-processing the transmission data Ta, Tb, and a shape recognition for recognizing the shapes of the inspection objects Wa, Wb and outputting the shape data Pa, Pb. Part 18,
An image processing area A in which the transmission data Ta and Tb are image-processed each time the plurality of inspection objects Wa and Wb are exposed.
Is the shape data P for each of the inspection objects Wa and Wb.
Based on a and Pb, an area dividing unit 19 that divides into the inspection areas Aa and Ab for the number of the shape data Pa and Pb including the transmission data Ta and Tb, respectively, and the transmission in each of the inspection areas Aa and Ab. A determination unit 15 that determines the presence or absence of the foreign matter d for each of the inspection objects Wa and Wb based on the data Ta and Tb.

In the X-ray foreign matter detecting apparatus according to the sixth aspect, the shapes of the plurality of inspection objects Wa and Wb are recognized and the shape data is output. Then, the plurality of inspection objects Wa and Wb are exposed to X-rays. The transmission data Ta, Tb based on the transmission amount of the X-rays transmitted through the inspection objects Wa, Wb is developed as an image. Based on the transmission data Ta and Tb and the shape data, the inspection object W
The area is divided into inspection areas Aa and Ab for each a and Wb. Then, the presence or absence of the foreign matter d is determined for each of the divided inspection areas Aa and Ab.

As a result, each time the number of the plurality of inspected objects Wa and Wb simultaneously inspected increases or decreases, the plurality of inspected objects W is increased.
It is possible to increase or decrease the number of divisions of the image processing area A by using the shape data obtained from a and Wb, to achieve complete automation of a plurality of simultaneous inspections, and to further improve inspection efficiency.

Further, in the X-ray foreign matter detecting device according to the seventh aspect, in the X-ray foreign matter detecting device according to the sixth aspect, the inspection area is divided every time the plurality of inspection objects Wa and Wb are exposed. It is characterized by comprising a transmission image display section 16 for displaying the respective transmission data Ta, Tb in each of them in parallel for each of the inspection regions Aa, Ab along the parallel direction of the plurality of inspection objects Wa, Wb. .

In the X-ray foreign matter detecting device according to the seventh aspect, each time the plurality of inspection objects Wa, Wb are increased or decreased, the image-processed transmission data Ta, T displayed on the transmission image display unit 16 are displayed.
Transmission data T on the transmission image display unit 16 indicates which of a plurality of inspected objects Wa and Wb to be inspected at the same time.
The arrangement of a and Tb enables visual discrimination.

Further, the X-ray foreign matter detecting device according to the eighth aspect is the X-ray foreign matter detecting device according to the sixth aspect, wherein the inspection area is divided every time the plurality of inspection objects Wa and Wb are exposed. The determination results Ha, Hb of the inspection objects Wa, Wb by the determination unit 15 for each of the inspection areas Aa, A along the parallel direction of the inspection objects Wa, Wb.
It is characterized in that it is provided with a determination result display section 17 for displaying in parallel for each b.

In the X-ray foreign matter detecting device 1 of the eighth aspect, the determination result H of each of the inspection objects Wa and Wb displayed on the determination result display unit 17 is displayed each time the plurality of inspection objects Wa and Wb are increased or decreased.
Which of a plurality of inspected objects Wa and Wb to be inspected at the same time a and Hb correspond to can be visually discriminated by the arrangement of the judgment results Ha and Hb on the judgment result display unit 17.

Further, in the X-ray foreign matter detecting device according to the ninth aspect, in the X-ray foreign matter detecting device according to the eighth aspect, the objects to be inspected Wa and Wb for which the presence or absence of the foreign matter is determined are carried out. The determination result display unit 17 having an exit 3b is provided on the side of the carry-out exit 3b, and the judgment results Ha, Hb corresponding to the positions of the inspection objects Wa, Wb carried out from the carry-out exit 3b. Is characterized by displaying.

In the X-ray foreign matter detecting apparatus according to the ninth aspect, each time a plurality of inspection objects Wa, Wb are increased or decreased, a plurality of inspection objects Wa, Wb simultaneously conveyed in parallel and their determination results Ha,
It is possible to associate Hb with each other and visually recognize them at the same time.

[0039]

FIG. 1 is a perspective view showing the appearance of an X-ray foreign matter detection apparatus 1. The X-ray foreign matter detection device 11 is provided in a part of the transportation line and is mixed with metal (glass, stone, bone) in the inspection objects Wa and Wb (including the surface) sequentially transported at a predetermined interval. The presence or absence of foreign matter such as is detected.

In the X-ray foreign matter detecting device 1, the carrying section 3 and the foreign matter detecting section 4 are provided inside the apparatus main body 1a, and the operation indicator 7 is provided.
Is provided on the upper front surface of the apparatus main body 1a. The operation display 7 is composed of, for example, a color LCD touch panel.

The transport section 3 includes, for example, raw meat, fish, processed foods,
It carries various inspected objects Wa and WbW such as medicines, and is composed of, for example, a belt conveyor arranged horizontally with respect to the apparatus main body 1a. Both sides 1b of the device body 1a,
A carry-in port 3a and a carry-out port 3b are formed in 1c.
The transport unit 3 is driven by the drive motor 2 and has a predetermined transport speed set in advance.
Wb is conveyed toward the carry-out port 3b side (conveying direction X in the drawing).

In the present embodiment, the inspection object Wa,
A plurality (two in FIG. 2) of Wb are conveyed in parallel in the width direction Y orthogonal to the conveyance direction X. The inspection objects Wa and Wb are stored or packaged in a package such as a bag, a box, and a paper having a high transmittance.

The foreign matter detecting section 4 receives the object W to be inspected.
a and Wb are used to detect foreign matter in the middle of the conveyance path.
An X-ray generator 5 is provided above the transport unit 3 at a predetermined height apart, and an X-ray detector 6 is provided in the transport unit 3 so as to face the X-ray generator 5.

The X-ray generator 5 has a structure in which a cylindrical X-ray tube 9 provided inside a metal box body 8 is immersed in insulating oil (not shown), and an electron beam from the cathode of the X-ray tube 9 is emitted. Is irradiated on the anode target to generate X-rays. The longitudinal direction of the X-ray tube 9 is the transport direction X of the inspection objects Wa and Wb.
It is provided in the width direction Y orthogonal to the. The X-rays generated by the X-ray tube 9 are radiated toward the X-ray detector 6 below by a slit (not shown) along the longitudinal direction in the form of a substantially triangular screen.

The X-ray detector 6 detects the X-rays transmitted through the inspection objects Wa and Wb when the inspection objects Wa and Wb are irradiated with the X-rays, and detects the detected X-rays. An electric signal is output according to the amount of transmission of the wire.

The X-ray detector 6 uses an array line sensor having a plurality of photodiodes arranged in a line and a scintillator provided on the photodiodes.

In the X-ray detector 6 having such a structure,
When the X-ray generator 5 irradiates the inspection objects Wa and Wb with X-rays, X that passes through the inspection objects Wa and Wb.
The rays are received by the scintillator and converted into light. Further, the light converted by the scintillator is received by the photodiode arranged below it. Then, each photodiode converts the received light into an electric signal and outputs it.

The X-ray detector 6 outputs to the processing section 10 an electric signal having a level corresponding to the intensity of the received X-ray. For example, the photodiode is composed of one line, and 640 photodiodes are arranged at a pitch of 0.4 mm in the line direction (Y direction).

FIG. 2 is a block diagram showing the electrical construction of the apparatus. The processing unit 10 is composed of a CPU and the like, a memory and the like. The electric signal input from the X-ray detector 6 is A / D converted by an A / D converter (not shown) and then stored in the data memory 11.

In the data memory 11, the transmission data Ta and Tb of the above 640 X-rays per line (Y direction).
The (electrical signal output from the X-ray detector 6) is stored in a predetermined number of lines (for example, 480 lines) corresponding to at least the length of the inspected objects Wa and Wb to be conveyed in the conveyance direction X. The processing unit 10 uses the stored transparent data Ta, T
Based on b, the inspection processing is performed for foreign matter mixed in the inspected objects Wa and Wb.

The image processing section 12 performs image processing on the transparent data Ta and Tb stored in the data memory 11. In this image processing, the original transparent data Ta and Tb are subjected to log conversion and linear conversion, and filtering processing is further performed as necessary to emphasize foreign matters. Pixel values obtained by this image processing are represented by 256 gradations, for example.

Transparent data Ta when this image is developed,
Tb is shown in FIG. As shown in FIG. 3A, sausages as the inspection objects Wa and Wb are developed on an image processing area A having n × m pixels. For example, a foreign substance d such as metal, glass, stone, or bone in the inspection objects Wa and Wb has a small X-ray transmission amount (transmission data Ta and T).
b is low). Therefore, the pixel value is higher than the sausage pixel value. On the other hand, the inspection objects Wa, Wb
Since the sausage itself has a relatively large X-ray transmission amount (transmission data Ta and Tb are high), its pixel value takes a low value. In addition, the package Pa of the inspection object Wa, Wb,
Since Pb has a larger amount of X-ray transmission than sausage,
Its pixel value is lower than that of sausage.

The area setting section 13 sets the number of areas into which the image processing area A of the transparent data T to be image-expanded is divided. For example, the number of inspection areas is selected by pressing the screen switching button 7c of the operation display unit 7 to call the screen shown in FIG. 4 and pressing the displayed number on the numeric keypad 13a. To reset, press clear key C. To enter, press the enter key.

The area dividing unit 14 divides the image processing area A in the n-th row and the m-th column including the transparent data Ta and Tb which are image-developed into the number of inspection areas set by the area setting unit 13. The image processing area A is divided in parallel in the Y direction. For example, when the area setting unit 13 sets the division into two,
As shown in FIG. 3B, it is divided between the n / 2-th pixel row and the n / 2 + 1-th pixel row in the Y direction, and is divided into the inspection area Aa and the inspection area Ab.

The inspection area Aa includes an inspection object Wa and a package Pa for accommodating the inspection object Wa. The number of pixels is n · m / 2. Similarly, the inspection area Ab
It includes an inspection object Wb and a package Pb that houses the inspection object Wb, and the number of pixels is n · m / 2.

The determination section 15 determines the presence or absence of the foreign matter d for each of the inspection objects Wa and Wb based on the transmission data Ta and Tb in the inspection areas Aa and Ab output from the image processing section 12. That is, the determination unit 15 has a predetermined threshold value, and when the pixel value of each inspection area Aa, Ab includes a pixel exceeding the threshold value, the pixel portion is determined to be the foreign substance d. Therefore, the inspection object Wa in the inspection area Aa is determined to have the foreign substance d.

As shown in FIG. 5, the operation display 7 is, for example, a color LCD touch panel type. At the bottom of the operation indicator 7, a start button 7a, a stop button 7b,
A screen switching button 7c is provided. When the start button 7a is pressed, the X-ray inspection is started. When the stop button 7b is pressed, the X-ray inspection is stopped. When the screen switching button 7c is pressed, the screen shown in FIG. 4 (FIG. 5) is switched to the screen shown in FIG. 5 (FIG. 4).

The liquid crystal portion 7d of the operation display 7 comprises a transparent image display section 16 and a judgment result display section 17. On the transparent image display unit 16, transparent images (transparent data Ta, Tb in which images are developed) in the inspection areas Aa and Ab are displayed.

The operation indicator 7 is provided on the front surface of the X-ray foreign matter detecting apparatus 1, and the inspection objects Wa and Wb are conveyed from right to left in the figure. Therefore, the inspection object Wa corresponding to the transmission image Ta of the inspection area Aa is conveyed on the back side in the width direction Y and is displayed on the transmission image display unit 16. On the other hand, the inspection object W corresponding to the transmission image Tb of the inspection area Ab
The sheet b is conveyed in the front in the width direction Y and is displayed on the lower portion of the transparent image display unit 16.

On the judgment result display section 17, each inspection object W is displayed.
The determination results Ha and Hb of a and Wb are displayed. When it is determined that the foreign matter d is not mixed, “OK” is displayed. When it is determined that the foreign matter d is mixed, “N
G ”is displayed.

The operation display 7 is provided on the front surface of the X-ray foreign matter detection apparatus 1, and the inspection objects Wa and Wb are conveyed from right to left in the figure. Therefore, the inspection object Wa corresponding to the inspection area Aa is conveyed on the back side in the width direction Y, and the determination result Ha is displayed on the upper portion of the determination result display unit 17. On the other hand, the inspection object Wb corresponding to the inspection area Ab is conveyed on the front side in the width direction Y, and the determination result Hb is displayed in the lower portion of the determination result display unit 17.

Next, the operation of this embodiment will be described. First, the number (for example, two) of the inspection objects Wa and Wb to be simultaneously conveyed is determined. After determining the number of simultaneous conveyances, the area setting unit 13 sets the number of areas to "2".

The objects Wa and Wb to be inspected are the carry-in port 3 of the carrying section 3.
When it is carried in from a, the inspection object W
X-rays are emitted from the X-ray generator 5 to a and Wb. This X
X that passes through the inspected objects Wa and Wb due to the radiation of the rays
The lines are detected by the X-ray detector 6 and stored in the data memory 11 as electric signals (transmission data Ta, Tb).

The transparent data Ta and Tb are transferred to the image processing unit 1.
Image development in 2. Image-developed transparent data Ta, T
The image processing area A including b is inspected in the inspection area A in the parallel direction of the inspection objects Wa and Wb by the division number set by the area setting unit 13.
Divide evenly into a and Ab. Divided inspection area Aa,
The transparent data Ta and Tb for each Ab are output and displayed on the transparent image display unit 16, as shown in FIG.

Inspection area A divided by the determination unit 15
The foreign matter is determined for each of a and Ab, and the determination results Ha and Hb are output and displayed on the transparent image display unit 16 as shown in FIG.

As a result, a fixed plurality of inspection objects W are provided.
Foreign matter inspection is possible when a and Wb are simultaneously transported,
The work time can be shortened and the work efficiency is improved. Therefore, a large amount of inspected objects W can be inspected even with one X-ray foreign matter detection device 1.

Further, the inspection objects Wa and W simultaneously inspected
The display positions of the image-processed transmission data Ta and Tb and the determination results Ha and Hb of b are the respective inspection objects W on the conveyor belt.
It corresponds to the positions of a and Wb. Therefore, when taking out the inspection object Wa in which the foreign matter is mixed, it is possible to prevent a mistake in the work of taking out the inspection object Wb in which the foreign matter is not mixed by mistake.

In this embodiment, the two objects to be inspected Wa and Wb are always conveyed in sequence, but the number of objects to be inspected Wa is not limited to two and may be three or more as long as it is a fixed number. It is also possible to carry them in parallel for simultaneous inspection.

Next, a second embodiment will be described. The same parts as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted. The present embodiment is an example in which the determination result display unit 17 is provided on the side surface 1c of the X-ray foreign matter detection apparatus 1 where the carry-out port 3b is provided. The determination result display unit 17 is the exit 3
It is provided directly above b.

Therefore, when the inspected objects Wa and Wb simultaneously inspected are carried out from the carry-out port 3b, as shown in FIG. 7, the respective judgment results Ha and Hb are the respective inspected objects Wa and Wb. It is displayed directly above Wb. Thereby, the operator visually recognizes the determination result display unit 17 of the present example,
It is not necessary to move to the front surface of the apparatus main body 1a to visually check the determination result, and the burden on the operator can be reduced. Further, also in the latter sorting work, it is not necessary to move to the front surface of the apparatus main body 1a to visually check the determination result, and the efficiency of the sorting work can be improved.

Next, a third embodiment will be described. The same parts as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted. In this embodiment, the inspection objects Wa and Wb are
This is an example of the case where individual pieces are simultaneously conveyed, and is an example in which the X-ray foreign matter detection apparatus 1 is provided with a sorting mechanism 20 as a sorting means as shown in FIGS. 8 and 9.

The sorting mechanism 20 is composed of a sorting transport section 21 and sorting sections 22 (22a, 22b). The sorting transport unit 21 has the same configuration as the transport unit 3. Sorting conveyor 21
Are arranged close to the carry-out port 3b of the transport unit 3 and are inspected Wa, Wb that have been inspected and carried out from the carry-out port 3b.
Is transferred.

The selection unit 22 (22a, 22b) includes a drive circuit 23 (23a, 23b) and a drive motor 24 (24a,
24b) and a sorting arm 25 (25a, 25b). Each drive circuit 23a, 23b receives a drive signal corresponding to the determination results Ha, Hb from the determination unit 15, and sets the rotation direction and rotation amount of each drive motor 24a, 24b.

As shown in FIGS. 8 and 9, the sorting arms 25a and 25b are arranged in parallel in the transport direction X and extend substantially in the middle in the width direction Y of the transport belt. This state is the initial state. One end of each sorting arm 25a, 25b is rotatably supported by the rotation shaft of the drive motor 24a, 24b.
The other ends of the sorting arms 25a and 25b are connected to the drive motor 24.
drive motors 24a, 24 by the rotational force from a, 24b
The sorting arm 25 is swung on a horizontal plane around the rotation axis of b at a predetermined timing set by the transport speed.

That is, the discriminator 15 to the drive circuit 23a
When a drive signal is output to, the rotation shaft of the drive motor 24a rotates in the counterclockwise direction in FIG. 9 at a predetermined angle (for example, 45 degrees).
Drive to rotate.

The sorting arm 25a is driven by the drive motor 2
The drive motor 24a rotates in a counterclockwise direction in FIG. 9 by a predetermined angle with one end of the rotation shaft 4a being axially supported as an axis. Then, after a certain time has elapsed, the drive circuit 23a
Drives the rotation shaft of the drive motor 24a to rotate in the clockwise direction in FIG. 9 by a predetermined angle (for example, 45 degrees). This allows
The sorting arm 25a returns to the initial state by rotating the drive motor 24a in the clockwise direction in FIG.

Similarly, when a drive signal is output from the discriminating unit 15 to the drive circuit 23b, the rotary shaft of the drive motor 24b is rotationally driven by a predetermined angle (for example, 45 degrees) in the clockwise direction in FIG.

The sorting arm 25b is driven by the drive motor 2
The rotating shaft of 4b is rotated about a predetermined angle in the clockwise direction in FIG. Then, after a certain period of time has passed, the drive circuit 23b
Drives the rotation shaft of the drive motor 24b to rotate counterclockwise in FIG. 9 by a predetermined angle (for example, 45 degrees). As a result, the sorting arm 25b returns to the initial state by the rotation of the drive motor 24 in the counterclockwise direction in FIG.

The operation of this embodiment will be described. The two inspected objects Wa and Wb that have been inspected at the same time are delivered to the carry-out port 3b.
Is conveyed from the sheet to the sorting conveyance section 21 and conveyed.

For example, when it is determined that both the inspected objects Wa and Wb are free of foreign matter, no drive signal is output from the determination section 15 to the drive circuits 23a and 23b, and the sorting arms 25a and 25b are in the carrying direction. It remains in the initial state parallel to X. As a result, the conveyance paths for the inspection objects Wa and Wb on the conveyance belt of the sorting conveyance portion 21 are secured, and the inspection objects Wa and Wb are conveyed by the sorting conveyance portion 21 and are treated as non-defective products in the subsequent stage. .

Further, when it is determined that only the inspected object Wa on the back side shown in FIG. 8 has a foreign substance, the discriminating section 15 sends a drive signal only to the drive circuit 23a, and the inspected object Wa causes the sorting arm 25a. At the timing of passing the side of the sorting arm 25
a is rotated. As a result, the sorting arm 25a comes into contact with the inspection object Wa and guides it to the outside of the sorting transport unit 21, and removes it from the sorting transport unit 21. After that, the sorting arm 25a is returned to the initial state by the rotation of the drive motor 24a in the clockwise direction in FIG.

As a result, only the object Wa to be inspected, which is determined to have foreign matter, is removed and processed as a defective product. On the other hand, the object Wb to be inspected, which is determined as having no foreign matter on the front side in FIG.
Are transported by the sorting transport unit 21, and are processed as non-defective products in the subsequent stage.

Further, when it is determined that only the inspected object Wb on the back side shown in FIG. 8 has a foreign substance, the determination unit 15 sends a drive signal only to the drive circuit 23b, and the inspected object Wb causes the selection arm 25b. At the timing of passing the side of the sorting arm 25
b is rotated. As a result, the sorting arm 25b abuts the inspection object Wb, guides it to the outside of the sorting transport unit 21, and removes it from the sorting transport unit 21. After that, the sorting arm 25b returns to the initial state by the rotation of the drive motor 24b in the counterclockwise direction in FIG.

As a result, only the inspected object Wb judged to have foreign matter is removed and processed as a defective product. On the other hand, the inspected object Wa on the back side in FIG. 8 that is determined to have no foreign matter is conveyed by the sorting conveyance unit 21 and is processed as a non-defective product in the subsequent stage.

When it is determined that both the inspection objects Wa and Wb have foreign matter, the determination section 15 determines the drive circuits 23a and 2b.
A drive signal is sent to 3b, and the sorting arms 25a and 25b are rotated at the timing when the inspection objects Wa and Wb pass the sorting arms 25a and 25b side. As a result, the sorting arms 25a and 25b are brought into contact with the inspection objects Wa and Wb to guide them to the outside of the sorting transport unit 21, and the sorting transport unit 21 is guided.
To remove from. Then, the sorting arms 25a and 25b are returned to the initial state by the rotation of the drive motors 24a and 24b.

According to this example, the two inspection objects Wa and Wb which are simultaneously inspected and carried out are evaluated by the determination results Ha,
The sorting process can be performed based on Hb, and the efficiency of pass / fail sorting can be improved.

Next, a fourth embodiment will be described. The same parts as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted. In the present embodiment, a plurality of inspection objects Wa,
This is an example in which Wb is sequentially transported, and the number in which the number is transported is increased or decreased.

As shown in FIG. 10, in the present embodiment,
A shape recognition unit 18 that recognizes the shapes of the plurality of inspection objects Wa and Wb is provided. The shape recognition unit 18 is the X-ray generator 5.
Like the above, it is provided on the upper portion of the transport unit 3. Shape recognition unit 1
Reference numeral 8 denotes a CCD line sensor arranged in the width direction Y orthogonal to the transport direction X, and recognizes the shapes of the inspection objects Wa and Wb from above regardless of the transmittance of the inspection objects Wa and Wb. . The shape data Pa and Pb of the inspection objects Wa and Wb detected by the CCD line sensor 18 are stored in the data memory 11.

In addition, the area dividing section 19 causes the inspection objects Wa and Wb to be inspected each time a plurality of inspection objects Wa and Wb are exposed.
Of the image processing area A in the n-th row and the m-th column including the transparent data Ta and Tb of each of the shape data Pa and Pb of the inspection objects Wa and Wb.
Are divided into inspection areas Aa and Ab.

That is, as shown in FIG. 11, the image processing area A is divided into pixel rows in which the shortest distance between the shape data Pa and Pb adjacent in the width direction Y is approximately half. Therefore, as shown in FIG. 11A, since the number of pixel rows in the width direction Y between the shape data Pa and Pb is eight, since the rows are divided into four rows, as shown in FIG. , The n / 2th pixel row in the middle and (n / 2 +
1) Divide into the 1st pixel row.

Next, the operation of this embodiment will be described. When two inspected objects Wa and Wb are simultaneously conveyed,
First, the CCD line sensor 18 is used to inspect each object Wa, W.
The shape of b is recognized. The shape data Pa and Pb are binarized by the image processing unit 12. An image obtained by expanding the image of this shape data is shown in FIG. The shape data Pa and Pb indicate packages that store sausages as the inspection objects Wa and Wb.

When the objects Wa and Wb to be inspected are further conveyed,
This time, it is exposed to X-rays, and the transmission data Ta and Tb shown in FIG. 11B are obtained. In the transmission data Ta and Tb, the inspection objects Wa and Wb themselves (sausage) are detected. In addition,
Highly transparent packages are not detected.

Next, the image processing area A is divided based on the shape data Pa and Pb. In the area dividing section 14, the transported object W to be inspected is determined by the pixel values of the shape data Pa and Pb.
It is determined that the numbers a and Wb are two, and the image processing area A composed of the transparent data Ta and Tb shown in FIG. 11B includes the shape data Pa and Pb from the coordinate position of the shape data Pa and Pb. To the n / 2th pixel row in the width direction Y and (n /
It is divided into two with the (2 + 1) th pixel row. Figure 11
As shown in (c), the inspection area Aa is the inspection area including the inspection object Wa (transmission data Ta) on the back side with respect to the front surface of the apparatus main body 1a. On the other hand, the inspection area including the inspection object Wb (transmission data Tb) in front of the front of the apparatus body 1a is the inspection area Ab.

Then, the presence / absence of the foreign matter d is determined by the determination unit 15 for each of the divided inspection areas Aa and Ab. The determination results Ha, Hb and the transmission images Ta, Tb are displayed as shown in FIG. 5, as in the first embodiment.

Next, the inspection objects Wa, Wb,
When the number of Wc becomes 3, the CCD line sensor 1
8 simultaneously recognizes the shapes of these three inspection objects Wa, Wb, Wc and outputs the shape data Pa, Pb, Pc. The shape data Pa, Pb, Pc are stored in the data memory 11. The shape data Pa, Pb, Pc are used for the image processing unit 1.
Binarization processing is performed at 2. This shape data Pa, Pb, P
An image when the image of c is developed is shown in FIG. Similar to FIG. 11A, the shape data Pa, Pb, Pc are
The package which accommodates the sausage as inspection object Wa, Wb, Wc is shown.

When the inspection objects Wa, Wb, Wc are further conveyed, they are exposed to X-rays this time, and the transmission data Ta, Tb, Tc shown in FIG. 12B are obtained. Transmission data Ta, T
At b and Tc, the inspection objects Wa, Wb, and Wc themselves (sausage) are detected. Note that packages with high transmittance are not detected.

Next, the image processing area A is divided based on the shape data Pa, Pb, Pc. Shape data Pa, P
Based on the pixel values of b and Pc, the area dividing unit 14 determines that the number of inspected objects W that have been conveyed is three. And FIG.
As shown in FIG. 2 (a), adjacent shape data (Pc, P
Since the number of pixel rows in the width direction Y between a) and (Pa, Pb) is 4, each is divided into two rows.

That is, the shape data (Pc, Pa) is divided between the n / 3rd pixel row and the (n / 3 + 1) th pixel row in the width direction Y. Similarly, (Pa, Pb)
Between the 2n / 3rd pixel row in the width direction Y and (2n / 3
It is divided into the (+1) th pixel row.

As a result, the image processing area A composed of the transparent data Ta, Tb, Tc shown in FIG.
As shown in (c), the coordinate position of the shape data Pa, Pb, Pc is divided into three in the width direction Y so as to include the shape data Pa, Pb, Pc. As shown in FIG. 12C, the inspection object W
The inspection areas including c, Wa, and Wb are inspection areas Ac, Aa,
It is Ab.

Then, the divided inspection areas Ac, Aa,
The determination unit 15 determines the presence or absence of the foreign substance d for each Ab.

The transmission data Ta, Tb, Tc for each of the divided inspection areas Aa, Ab, Ac is, as shown in FIG. 13, the inspection area A from the upper stage corresponding to the width direction Y of the transport section 3.
The transparent images Ta, Tb, and Tc of c, Aa, and Ab are output and displayed on the transparent image display unit 16.

Further, foreign substances are determined for each of the inspection areas Aa, Ab, Ac divided by the determination section 15, and as shown in FIG. 13, the inspection areas Ac, Aa, The determination results Hc, Ha, and Hb of Ab are output and displayed on the determination result display unit 17.

As a result, when the number of the inspected objects W to be inspected simultaneously increases from 2 to 3, the inspected objects Wa,
Using the shape data P obtained from Wb and Wc, the inspection area can be divided into two to three.

Further, in the present embodiment, the case where the number of the inspected objects W sequentially conveyed is increased from 2 to 3, but the case where the number is decreased from 3 to 2 is also applicable. is there. Further, the number of increase / decrease is not limited to two or three, and as long as it can be placed in the width direction Y of the transport unit 3,
Four or more may be used, and the inspected objects Wa and Wb may be 1
May be reduced to individual.

Therefore, it is not necessary to make the number of inspected objects W to be simultaneously conveyed constant, and shape data obtained from a plurality of inspected objects W each time the number of a plurality of inspected objects W to be inspected simultaneously increases or decreases. It is possible to increase or decrease the number of divisions of the image processing area A by using P, and it is possible to fully automate a plurality of simultaneous inspections and further improve the inspection efficiency.

When the number of divisions of the image processing area A is increased or decreased, accordingly, as shown in FIGS. 5 and 13, the transparent image T and the determination result in the transparent image display section 16 and the determination result display section 17 are displayed. H is also increased or decreased. Therefore, the operator can instantly visually recognize that the inspection object W has increased or decreased.
Further, the correspondence relationship between the inspection object W and the transmission image T and the determination result H when the inspection object W is increased or decreased becomes clear, and it becomes easy to determine which of the inspection objects W simultaneously inspected contains the foreign matter. .

Further, as shown in FIG. 14, also in the present embodiment, the determination result display unit 1 is provided as in the second embodiment.
7 may be provided on the side surface on the unloading port 3b side.

Therefore, when two inspected objects Wa and Wb that have been inspected at the same time are carried out from the carry-out port 3b,
As shown in FIG. 7, the respective judgment results Ha and Hb are displayed directly above the inspected objects Wa and Wb. When the number of inspected objects W is three, the respective judgment results Ha, Hb, Hc are displayed immediately above each inspected inspected object Wa, Wb, Wc as shown in FIG.

As a result, the operator visually checks the judgment result display section 17 of this example every time the object W to be inspected is carried out, whereby the increase / decrease in the number of the objects W to be inspected and the judgment result H can be visually recognized simultaneously. Therefore, it is not necessary to move to the front surface of the apparatus main body 1a to visually check the determination result, and the burden on the operator can be reduced. Further, also in the latter sorting work, it is not necessary to move to the front surface of the apparatus main body 1a to visually check the determination result, and the efficiency of the sorting work can be improved.

In the present embodiment, the shape recognition unit 18
Although the CCD line sensor is used as the above, a reflection type light emitting and receiving line sensor may be applied as shown in FIG. The reflection type light emitting and receiving line sensor has LEs arranged in the width direction Y.
The light projecting portions 18a such as D and P arranged in the width direction Y as well.
It is composed of a light receiving portion 18b such as D and PRT.

As shown in FIG. 15A, the light projecting portion 18a
Always emits light toward the transport unit 3, and the light receiving unit 18b always receives the reflected light with a constant light intensity reflected from the transport unit 3.

As shown in FIG. 15B, the object to be inspected W
When a and Wb are conveyed, part of the light from the light projecting unit 18a is projected onto the inspection objects Wa and Wb. The light intensity of the reflected light at this portion weakens and is received by the light receiving portion 18b. Therefore, the shape is recognized by the light intensity received by the light receiving portion 18b, and this light intensity is converted into an electric signal and stored in the data memory 11 as the shape data P.

[0113]

According to the first aspect of the present invention, it is possible to divide the image processing area containing the transmission data and simultaneously inspect a plurality of inspected objects, thereby shortening the inspection time and improving the inspection efficiency. Become.

According to the second aspect, it is possible to clarify the correspondence relationship between each inspected object simultaneously inspected and its image-processed transmission data.

Further, according to the third aspect, it is possible to clarify the correspondence between each inspected object simultaneously inspected and the foreign matter determination result.

According to the fourth aspect, it is possible to simultaneously visualize each inspected object and its foreign matter determination result corresponding to each position of the inspected inspected object that is carried out. Therefore, it is possible to improve the work efficiency of the sorting work in the subsequent stage.

Further, according to the fifth aspect, it is possible to completely automate the work of selecting a plurality of inspected objects to be inspected simultaneously.

According to claim 6, the number of divisions of the image processing area is increased or decreased by using the shape data obtained from the plurality of inspected objects each time the number of the plurality of inspected objects simultaneously inspected is increased or decreased. As a result, it is possible to fully automate a plurality of simultaneous inspections, and it is possible to further improve the inspection efficiency.

Further, according to the seventh aspect, each time the plurality of inspected objects to be inspected simultaneously increase or decrease, the correspondence relationship between each inspected object simultaneously inspected and the image-processed transmission data is increased or decreased. It is possible to clarify.

Further, according to claim 8, each time when a plurality of inspected objects to be inspected at the same time increase or decrease, the correspondence relation between each inspected object simultaneously inspected due to the increase and decrease and the foreign matter determination result is clarified. It is possible to plan.

Further, according to claim 9, the foreign matter determination result of each inspected object corresponding to each position of the inspected inspected object that is carried out is increased every time the plurality of inspected objects simultaneously inspected increases or decreases. Simultaneous visualization can be achieved, which can improve the work efficiency of the sorting operation in the subsequent stage.

[Brief description of drawings]

FIG. 1 is a perspective view showing the external appearance of a first embodiment of an X-ray foreign matter detection device according to the present invention.

FIG. 2 is a block diagram showing an electrical configuration of a first embodiment of an X-ray foreign matter detection device according to the present invention.

FIG. 3 is a diagram showing processing contents of an image processing unit and an area dividing unit in the first embodiment of the X-ray foreign matter detection device according to the present invention.

FIG. 4 is a diagram showing an area setting unit of the first embodiment of the X-ray foreign matter detection apparatus according to the present invention.

FIG. 5 is a diagram showing a transmission image display section and a determination result display section of the first embodiment of the X-ray foreign matter detection apparatus according to the present invention.

FIG. 6 is a perspective view showing the external appearance of a second embodiment of an X-ray foreign matter detection device according to the present invention.

FIG. 7 is a side view of the apparatus body in the second embodiment of the X-ray foreign matter detection apparatus according to the present invention.

FIG. 8 is a block diagram showing an electrical configuration of a third embodiment of an X-ray foreign matter detection device according to the present invention.

FIG. 9 is a plan view of a transfer line of a third embodiment of the X-ray foreign matter detection device according to the present invention.

FIG. 10 is a block diagram showing an electrical configuration of a fourth embodiment of an X-ray foreign matter detection device according to the present invention.

FIG. 11 is a diagram showing a transmission image display unit and a determination result display unit in the case where there are two inspection objects in the fourth embodiment of the X-ray foreign matter detection apparatus according to the present invention.

FIG. 12 is a diagram showing a transmission image display unit and a determination result display unit in the case where there are three inspection objects in the fourth embodiment of the X-ray foreign matter detection apparatus according to the present invention.

FIG. 13 is a diagram showing a transmission image display section and a determination result display section of an X-ray foreign matter detection device according to a fourth embodiment of the present invention.

FIG. 14 is a side view of an apparatus main body in a fourth embodiment of an X-ray foreign matter detection apparatus according to the present invention.

FIG. 15 is a side view when a reflection type light emitting and receiving line sensor is applied as a shape recognition unit in the X-ray foreign matter detection device according to the fourth embodiment of the present invention.

FIG. 16 is a perspective view showing the configuration of a conventional X-ray foreign matter detection device.

[Explanation of symbols]

1. X-ray foreign matter detection device 3b ... Carrying out port 4 ... Foreign matter detector 5 ... X-ray generator 6 ... X-ray detector 7 ... Operation display 10 ... Processing unit 11 ... Data memory 12 ... Image processing unit 14, 19 ... Area division unit 15 ... Judgment unit 16 ... Transparent image display section 17 ... Judgment result display section 18 ... Shape recognition unit 20 ... Selection means W (Wa, Wb, Wc) ... Inspected object A ... Image processing area Aa, Ab, Ac ... Inspection area T (Ta, Tb, Tc) ... Transparent data P (Pa, Pb, Pc) ... Shape data

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Masahiro Yagi             5-10-10 Minamiazabu, Minato-ku, Tokyo Henri             Tsu Co., Ltd. F-term (reference) 2G001 AA01 BA11 CA01 DA08 GA01                       GA06 HA13 JA09 JA13 KA03                       LA01 PA01 PA03 PA11

Claims (9)

[Claims] 1. A plurality of inspected objects (Wa, Wb) are irradiated with X-rays, and the X-ray transmission amount transmitted through each of the inspected objects according to the irradiation of the X-rays is used to determine the above. An X-ray foreign matter detection device for detecting the presence or absence of a foreign matter (d) in each inspected object, comprising: an X-ray generator (5) for irradiating each inspected object with X-rays; An X-ray detector (6) for outputting transmission data (Ta, Tb) corresponding to the intensity of X-rays transmitted through the inspection object, an image processing unit (12) for image-processing the transmission data, and the transmission data Image processed area (A)
Region dividing unit (14) for dividing the inspection data into preset inspection regions (Aa, Ab) each containing the transparent data.
And, based on the transmission data in each of the divided inspection areas,
An X-ray foreign matter detection device, comprising: a determination unit (15) for determining the presence or absence of the foreign matter for each of the inspection objects. 2. A transparent image display unit (16) for displaying the transmission data in each of the divided inspection areas in parallel in correspondence with the parallel state of the plurality of inspection objects. The X-ray foreign matter detection device according to claim 1. 3. A determination result display unit for displaying the determination result (Pa, Pb) of each of the inspection objects by the determination unit in parallel for each of the inspection regions in association with the parallel state of the plurality of inspection objects. The method according to claim 1, further comprising (17).
The X-ray foreign matter detection device described. 4. A carrying-out port (3b) for carrying out each of said inspected objects for which the presence or absence of said foreign matter is judged is provided, and said judgment result display section is provided at said carrying-out port side, and carried out from said carrying-out port. 4. The X-ray foreign matter detecting apparatus according to claim 3, wherein the determination result is displayed in correspondence with each incoming position of each of the inspection objects. 5. Based on the determination result by the determination unit,
A sorting means (20) for sorting the inspected object (Wa) determined to have the foreign matter and the inspected object (Wb) determined to have no foreign matter. 1. The X-ray foreign matter detection device according to 1. 6. A plurality of inspection objects (Wa, Wb) are exposed to X-rays, and the amount of X-rays transmitted through each of the inspection objects described above in association with the exposure of the X-rays is used to determine the above-mentioned values. An X-ray foreign matter detection device for detecting the presence or absence of a foreign matter (d) in each inspected object, comprising: an X-ray generator (5) for irradiating each inspected object with X-rays; An X-ray detector (6) that outputs transmission data (Ta, Tb) corresponding to the intensity of X-rays transmitted through the inspection object, an image processing unit (12) that performs image processing on the transmission data, and The shape data (Pa, P
b), a shape recognition unit (18), and an image processing area (A) in which the transmission data is image-processed each time the plurality of inspection objects are exposed to the shape for each inspection object. Based on the data, the inspection areas (Aa, Aa,
An area dividing unit (19) for dividing into Ab), and the transmission data in each of the divided inspection areas,
An X-ray foreign matter detection device, comprising: a determination unit (15) for determining the presence or absence of the foreign matter for each of the inspection objects. 7. The transmission data in the inspection area, which is divided each time the plurality of inspection objects are exposed, is arranged in parallel for each inspection area in correspondence with the parallel state of the plurality of inspection objects. The X-ray foreign matter detection device according to claim 6, further comprising a transmission image display unit (16) for displaying. 8. The determination result of each of the inspection objects by the determination unit for each of the inspection regions divided every time the plurality of inspection objects are exposed, corresponds to the parallel state of the plurality of inspection objects. The X-ray foreign matter detection device according to claim 6, further comprising a determination result display unit (17) that displays the inspection regions in parallel for each inspection region. 9. An unloading port (3b) for unloading each of the objects to be inspected, the presence / absence of the foreign matter is provided, and the determination result display unit is provided on the unloading port side, and is unloaded from the unloading port. 9. The X-ray foreign matter detection apparatus according to claim 8, wherein the determination result is displayed in correspondence with each incoming position of each of the inspection objects.