JP2002131247A - X-ray foreign matter detector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable the presence/absence of foreign matters in an object to be inspected to be confirmed at a glance by displaying a total image of the object, when exposed to X-rays in an optimum display area according to a length of the object. SOLUTION: The display area 6a of a display 6 is varied according to the length of the object to be inspected. The total image A of the object, showing an internal state when the object is exposed to X rays, is displayed by the display area 6a optimum to the length of the object. At the same time, a determination as to whether the object is proper and an inspection result C are displayed together in the display area 6a, excluding the total image A.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to raw meat, fish,
The present invention relates to an X-ray foreign matter detection device that detects foreign matter in a test object from the amount of X-ray transmitted when X-rays are irradiated to the test object of each type, such as processed foods and pharmaceuticals.

[0002]

2. Description of the Related Art X-ray foreign matter detectors irradiate X-rays to inspection objects of various types, such as raw meat, fish, processed food, and medicine, which are sequentially conveyed on a conveyance line, and are irradiated with the X-rays. This is a device that detects whether or not a foreign substance such as metal, glass, stone, bone, or the like is mixed in the inspection object from the amount of transmitted X-rays.

In this type of X-ray foreign matter detection apparatus, an image display showing the internal state of the inspection object at the time of X-ray exposure, a quality judgment display, and the like are displayed on a display screen of a display provided on the front of the apparatus body. It is displayed.

FIG. 7 shows an example of a display screen of a display of this type of conventional X-ray foreign matter detection device. In the configuration shown in FIG. 7, two indicators 52,
53 are arranged side by side, and the display areas 52a and 53a of the display screens of the respective indicators 52 and 53 are fixed to a predetermined size according to the dimensions of the apparatus main body 51. Then, an image A2 indicating the internal state of the inspection object at the time of X-ray irradiation is displayed on a display area 52a of one display 52, and the quality of the inspection object is displayed on a display area 53a of the other display 53. In addition to the judgment display B2, an inspection result display C2 of the total number of inspections, the number of non-defective products, and the total number of NGs is performed.

[0005]

By the way, this kind of X
The line foreign object detection device is provided in a part of the transport line, and sequentially inspects the inspected object on the transport line and inspects the inspected object for the presence of foreign matter. The length of the inspection object transported on the transport line of the day may differ depending on circumstances or the like. Also, for example, when transporting a packaged or sealed product as an inspection object, the inspection object having a substantially uniform length is to be inspected,
For example, when a raw material such as bulk meat is transported on a transport line as an inspection object, the length also varies, and the inspection object having a uniform length is not always transported on the transport line. .

When the X-ray foreign matter detecting device having the configuration shown in FIG. 7 is employed, an image A2 showing the internal state of the inspection object at the time of X-ray exposure, a display B2 indicating the quality of the inspection object, The inspection result display C2 is arranged side by side on the front of the apparatus main body 51.
Are displayed separately on the two indicators 52 and 53, and each indicator 5
Since the sizes of the display areas 52a and 53a are fixed, the image A2 showing the internal state of the inspection object at the time of X-ray exposure is the same regardless of whether the inspection object is long or short. A long inspection object that is displayed and protrudes from the display area 52a cannot be displayed all at once.

For this reason, conventionally, an image A2 of the inspection object displayed on the display screen 52a of the display 52 is operated by operating a screen switching key 54 provided separately from the displays 52 and 53 as shown in FIG. Can be displayed by scrolling in accordance with the movement of the object to be inspected, and confirming the presence or absence of foreign matter in the object to be inspected while visually observing a screen scrolling over the entire length of the object to be inspected.

As described above, in the conventional X-ray foreign matter inspection apparatus, when the image A2 showing the internal state of the inspection object at the time of X-ray exposure is performed, the length of the inspection object is larger than the display area of the display 52. If the length is too long, the entire inspection object cannot be displayed at once, and the presence or absence of foreign matter mixed in the inspection object cannot be confirmed at a glance.

In view of the above, in the configuration shown in FIG. 7, two display devices each having a sufficient display area are arranged side by side, and an image display showing the internal state of the inspection object at the time of X-ray irradiation, and an image display of the inspection object are shown. Although it is conceivable to perform a pass / fail judgment display and an inspection result display, in this case, there is a problem that the installation space of the display unit occupying the apparatus main body becomes large, which hinders miniaturization of the apparatus main body.

In view of the above, the present invention has been made in view of the above-mentioned problems, and has been made in consideration of the entirety of an object to be inspected showing an internal state at the time of X-ray irradiation in an optimum display area according to the length of the object to be inspected. It is an object of the present invention to provide an X-ray foreign matter detection device capable of displaying an image and confirming at a glance whether foreign matter is mixed in the inspection object.

[0011]

In order to achieve the above object, an X-ray foreign matter detection apparatus according to the first aspect of the present invention irradiates an X-ray to an object to be inspected 2 and emits the X-ray. In the X-ray foreign matter detection device 1 which inspects the presence or absence of foreign matter in the inspection object from the transmission amount of X-ray transmitted through the inspection object and displays the inspection result in the display area of the display 6 , The X
A display for variably controlling the size of the display area according to the length of the test object so that an entire image of the test object indicating the internal state at the time of line irradiation is displayed in the display area of the display. It is characterized by comprising control means 15.

According to a second aspect of the present invention, in the X-ray foreign matter detecting apparatus according to the first aspect, the display control means 15 displays an entire image of the inspection object showing an internal state at the time of the X-ray exposure, The size of the quality judgment display of the object to be inspected is varied according to the size of the whole image of the object to be inspected, and divided into display areas of the display to be displayed on one screen.

According to a third aspect of the present invention, in the X-ray foreign matter detection apparatus according to the first aspect, an entire image of the inspection object showing an internal state at the time of the X-ray exposure is fixed in a display area of the display unit 6. A display mode and a mode of scrolling and displaying a whole image of the test object indicating the internal state at the time of the X-ray exposure in the display area of the display in accordance with the movement of the test object. Switching means is provided.

According to a fourth aspect of the present invention, there is provided the X-ray foreign matter detecting apparatus according to any one of the first to third aspects, further comprising a transport unit 3 for transporting the inspection object 2, wherein the transport unit transports the inspection object. In the process, the presence or absence of a foreign substance in the inspection object is inspected.

In the X-ray foreign matter detection device of the present invention, the width of the display area of the display 5 in the transport direction of the inspection object 2 is variably controlled according to the length of the inspection object 2, and the length of the inspection object 2 is controlled. The entire image of the inspected object 2 showing the internal state at the time of X-ray irradiation is displayed at a time in an optimal display area. Accordingly, when the quality of the inspected object 2 is determined by visually checking the sequentially inspected inspected objects 2 one by one on the display screen of the display 6, the presence or absence of foreign matter mixed in the inspected object 2 is determined. Can be checked at a glance, and the position where foreign matter is mixed can be easily checked. In addition, even if the inspection object 2 is determined to be defective, and, for example, “NG” indicating the defective item is displayed on the display 6, the entire inspection object 2 can be checked at a glance by visual inspection of the display screen, and foreign matter The mixing position can also be easily confirmed.

[0016]

FIG. 1 is a block diagram showing the overall configuration of an X-ray foreign matter detection device according to the present invention, and FIG. 2 is a perspective view showing the external appearance of the X-ray foreign matter detection device.

As shown in FIGS. 1 and 2, the X-ray foreign matter detecting device 1 is provided in a part of a transport line, and is provided in an inspected object 2 (including a surface) which is sequentially transported at predetermined intervals.
This is to detect the presence or absence of a foreign substance mixed in the image. This X
In the linear foreign matter detection device 1, the transport unit 3 and the foreign matter detection unit 4 are provided inside the device main body 1a, and the operation panel 7 including the setting input unit 5 and the display 6 is provided on the upper front surface of the device main body 1a. .

As shown in FIG. 2, the transport section 3 transports the inspected object 2 of each type, such as raw meat, fish, processed food, and medicine, and is disposed, for example, horizontally with respect to the apparatus main body 1a. It consists of a belt conveyor. The transport unit 3 drives the inspection object 2 loaded from the entrance 3a in the direction of the arrow in FIG. 1 at a predetermined transport speed set in advance by the drive of the drive motor 6.
Is carried out to the carry-out port 3b.

As shown in FIGS. 1 and 2, the foreign matter detector 4 detects a foreign matter in the transported inspection object 2 in the middle of the transport path, and is provided above the belt conveyor 3 at a predetermined height. And an X-ray detector 9 provided in the belt conveyor 3 so as to face the X-ray generator 8.

The setting input section 5 is composed of a plurality of keys for giving various settings and instructions relating to the foreign substance inspection of the inspection object 2. In the example of FIG. 1, the setting input unit 5 includes a start key 5a, a stop key 5b, and a screen switching key 5c.
Only shows. The start key 5a is operated when instructing to start the apparatus operation, and the stop key 5b is operated when instructing to stop the apparatus operation. The screen switching key 5c is used to select between a mode in which the image displayed on the display 6 is fixedly displayed and a mode in which the image displayed on the display 6 is scrolled in accordance with the movement of the inspection object 2. Operated when switching screens.

The X-ray generator 8 has a configuration in which a cylindrical X-ray tube 12 provided inside a metal box 11 is immersed in insulating oil (not shown). Is irradiated on the anode target to generate X-rays.
The X-ray tube 12 is provided so that its longitudinal direction is orthogonal to the transport direction of the inspection object 2 (the direction of the arrow in FIG. 1).
The X-rays generated by the X-ray tube 12 are converted into a substantially triangular screen by converting a substantially conical X-ray toward a lower X-ray detector 9 through a slit (not shown) along the longitudinal direction. To be exposed.

The X-ray detector 9 detects X-rays transmitted through the inspection object 2 when the inspection object 2 is irradiated with the X-rays, and detects the transmitted amount of the detected X-rays. Output an electrical signal corresponding to.

Although not shown, the X-ray detectors 9 are arranged in a line in a direction perpendicular to the conveying direction of the inspection object 2 conveyed on the belt conveyor 3 (the direction of the arrow in FIG. 1). An array line sensor including a plurality of photodiodes and a scintillator provided on the photodiodes is used. In the X-ray detector 9 having such a configuration, when X-rays are emitted from the X-ray generator 8 to the inspection object 2, the X-rays transmitted through the inspection object 2 are received by the scintillator. To convert to light. Further, the light converted by the scintillator is received by a photodiode disposed below the scintillator. Each photodiode converts the received light into an electric signal and outputs the electric signal. This X
The electric signal from the line detector 9 is transmitted to the control unit 13 shown in FIG.
Is input to

The control means 13 receives a signal from the setting input section 5 operated by the user. For example, when the start key 5a of the setting input section 5 is operated, the operation of the apparatus is started, and the stop key is started. Each part (drive motor 6, X-ray generator 8, etc.) is controlled so that the operation of the apparatus is stopped when 5b is operated. When the screen switching key 5c of the setting input unit 5 is operated, the control unit 13 displays the whole image A of the inspection object 2 displayed on the display 6 at the time of X-ray irradiation.
A screen switching command for selectively switching the screen to one of a fixed display mode for fixedly displaying 1 and a scroll display mode for scrolling and displaying the image A1 in accordance with the movement of the inspection object 2 is output to the display control means 15. ing.

The control means 13 receives a signal from a position detecting means 14 for detecting the passage of the object 2 to be inspected. The position detecting means 14 is, for example, the belt conveyor 3.
And a photosensor comprising a pair of light emitting and receiving devices provided on the side of the carry-in entrance 3a. With this configuration, the inspection object 2
Is not passing in front of the photosensor, the light emitted from the light projector is received by the light receiver as it is. On the other hand, while the inspection object 2 is passing in front of the photosensor, light emitted from the light projector is blocked by the inspection object 2, and the amount of light received by the light receiver decreases. Then, an electric signal corresponding to the amount of light received by the light receiver is input to the control means 13 from the photo sensor. For example, when the inspection object 2 does not pass in front of the photosensor, an off signal is input from the position detection unit 14 to the control unit 13, and the position detection is performed while the inspection object 2 passes in front of the photosensor. An ON signal is input from the means 14 to the control means 13.

Further, a signal from an encoder (not shown) mounted on the drive motor 6 for detecting the transport speed of the belt conveyor 3 is input to the control means 13. In the control means 13, the time from when the position detection means 14 detects the front end of the inspection object 2 to when it detects the rear end (the time from when the signal from the position detection means 14 switches from off to on to when it is turned off again). ), And the product size (length) of the inspection object 2 is calculated from the transport speed of the belt conveyor 3.

The control means 13 includes a position detecting means 14
Outputs the electrical signal input from the X-ray detector 9 to the display control means 15 as data of the inspection object 2 from the detection of the front end of the inspection object 2 to the detection of the rear end thereof. Then, the control means 13 includes a metal in the inspection object 2 based on an electric signal corresponding to the transmission amount of the X-ray transmitted through the inspection object 2,
It is determined whether or not a foreign substance such as glass, stone, bone, or the like has been mixed, and further, the quality of the inspection object 2 is determined based on the result of the determination, and a selection indicating whether the inspection object 2 is a non-defective or defective item is performed. Outputs signals and the like to the outside. The inspection result of the inspection object 2 at this time is also input to the display control unit 15.

The display control unit 15 receives inspection data, inspection result data, display data, and the like of the inspection object 2 from the control unit 13. The display control means 15 displays the whole image A1 of the inspection object 2 at the time of X-ray irradiation, the pass / fail judgment display B1 and the test result display C1 on the display area 6a of the display 6.
Is displayed on one screen, the display of the display 6 is controlled based on various data from the control means 13. Also,
When the screen switching command is input from the control unit 13, the display control unit 15 switches to the scroll display mode if the current display is the fixed display mode, and switches to the fixed display mode if the current display is the scroll display mode. The display of the display 6 is controlled by switching.

In the X-ray foreign matter detecting apparatus 1 having the above-described configuration, when the inspection object 2 is carried in from the entrance 3a of the belt conveyor 3, the X-ray foreign substance detection device 1
X-rays are emitted from the ray generator 8. X-rays that pass through the inspection object 2 with the X-ray exposure are detected by the X-ray detector 9. Then, the control means 13 determines whether or not a foreign substance has entered the inspection object 2 based on an electric signal corresponding to the amount of transmission of the X-rays detected by the X-ray detector 9, and this determination result Output a selection signal indicating a good or defective product from the outside. Then, the inspection object 2 that has completed the above inspection is sorted into non-defective products and defective products according to the sorting signal output from the control unit 13.

Here, in the inspection of the inspection object 2, a display relating to the inspection of the inspection object 2 (for example, the image A1 of the inspection object 2 at the time of X-ray irradiation, the OK / NG judgment display of “OK”, “NG”) B1, the inspection result display C1 of the total number of inspections, the number of non-defective products, and the total number of NGs, etc.) are displayed simultaneously in the display area 6a of one display unit 6 through a display process described later.

FIG. 3 is a block diagram showing an internal configuration of the display control means 15 of the X-ray foreign matter detecting device 1, FIG. 4 is a diagram showing an example of a display state when the inspection object 2 is shorter than a reference length,
FIG. 5 is a diagram illustrating an example of a display state when the inspection object 2 is longer than the reference length.

In FIG. 3, the display control means 15 includes a display control section 15a, a display address generation section 15b, an image processing section 15c, an information display data storage section (VRAM1) 15d,
An image data storage unit (VRAM2) 15e, an information display data buffer 15f, and an image data buffer 15g are provided.

The display control section 15a provides information display data other than the image data of the inspection object 2 obtained by the detection of the X-ray detector 9 (for example, OK / NG judgment display data, total number of inspections, Inspection data of the number of non-defective products and the total number of NGs) are created. In addition, the display control unit 15a changes the display area 6 of the display 6 that changes according to the length of the inspection object 2.
The information in “a” (for example, “OK” or “NG” pass / fail determination) is moved to another location in the display area 6a, and the display information size is changed in accordance with the movement of the display information position.

The display address generation section 15b generates a read address of the information display data storage section 15d and a read address of the image data storage section 15e according to the length of the inspection object 2. In addition, the display address generation unit 15b
Information display data buffer 1 corresponding to the generated address
5f and the image data buffer 15g are switched.

The image processing section 15c processes the image data of the inspection object 2 inputted from the X-ray detector 9 via the control means 13, writes the processed image data in the image data storage section 15e. I have.

The information display data storage unit 15d stores the display control unit 1 in the address generated by the display address generation unit 15b.
The display information from 5a (information display data other than the image data of the inspection object 2: for example, pass / fail judgment information) is stored.
The image data storage unit 15e includes a display address generation unit 15b
The image data processed by the image processing unit 15c is stored in the address generated in step (1).

The information display data buffer 15f and the image data buffer 15g are switched according to the address generated by the display address generator 15b, and any data is output to the display 6 by this switching, and The image A1, the quality judgment display B1, and the inspection result display C1 of the inspection object 2 are displayed at predetermined positions in the same display area 6a on the display screen of the display 6.

Next, a display process for displaying the inspection result of the inspection object 2 by the X-ray foreign matter detector 1 on the display 6 will be described with reference to a flowchart of FIG.

First, the product size of the inspection object 2 to be inspected is determined (ST1). In this example, the length of the X-ray foreign matter detection device 2 (the belt conveyor 3 in the conveyance direction of the inspection object 2)
Is shorter than the length of the inspection object 2. Then, the product size (length) of the inspection object 2 is calculated from the time from when the position detection means 14 detects the front end of the inspection object 2 to when the rear end is detected, and the transport speed of the belt conveyor 3. I have. According to the calculation of the product size, not only the inspection object 2 having a uniform length but also the inspection object 2 having different lengths (for example, raw materials such as loose meat and products having different lengths) are used. It is possible to cope with an inspection when the sheet is conveyed on the belt conveyor 3.

When the inspection object 2 having a uniform length is transported onto the belt conveyor 3 for inspection, the product size of each type is stored in advance in a storage unit (not shown).
When a product type is input from the setting input unit 5, the product size of the relevant product type may be read from storage means (not shown).

Next, it is determined whether the product length is longer or shorter than the reference length (ST2). When it is determined that the inspection object 2 has a product length longer than the reference length, the display address generation unit 15b
The display control unit 15a sets display area size data of the image data storage unit 15e (ST3). in this case,
The address area of the image data storage unit 15e is set wide.

When the display area size data of the image data storage unit 15e is set, the display control unit 15a determines whether or not the information display data other than the image data of the inspection object 2 (for example, OK or NG). The display area size of (Result) is reduced, and the display position is moved to the upper part of the display area 6a (ST4). Subsequently, the display control unit 15a sets a longer display area size of the image data storage unit 15e on the information display data storage unit 15d (ST5). After that, the operation is started (ST6), and the inspection object 2 is irradiated with X-rays to inspect the inspection object 2 for the presence of foreign matter.

Accordingly, when the product length of the inspection object 2 is longer than the reference length, the above-described display processing is performed, thereby the inspection object 2 showing the internal state at the time of X-ray exposure as shown in FIG. 2 is displayed at a time below the display area 6a of the display device 6, and the pass / fail judgment display B of the inspection object 2 is displayed.
1 and the inspection result display C1 are displayed side by side at the top in the same display area 6a.

On the other hand, if it is determined that the product length of the inspection object 2 is shorter than the reference length, the display address generation unit 15
The display area size data of the image data storage unit 15e is set to b by the display control unit 15a (ST7). In this case, the address area of the image data storage unit 15e is set narrow.

When the display area size data of the image data storage unit 15e is set, the display control unit 15a determines whether or not information display data other than the image data of the inspection object 2 (for example, OK or NG) is acceptable. The display area size of (Result) is enlarged, and the display position is moved to the upper part of the display area 6a (ST8). Subsequently, the display control unit 15a sets the display area size of the image data storage unit 15e short on the information display data storage unit 15d (ST9). After that, the operation is started (ST6), and the inspection of the inspection object 2 for foreign matter is performed.

Therefore, when the product length of the inspection object 2 is shorter than the reference length, the above-described display processing is carried out, as shown in FIG. 2 is displayed on the left side in the display area 6a of the display 6 at a time, and the pass / fail judgment display B of the inspection object 2 is displayed.
1 and the inspection result display C1 are displayed side by side on the right in the same display area 6a.

In the above display processing, the entire image A of the inspection object 2 displayed in the display area 6a of the display 6 is displayed.
1 is normally set to the fixed display mode, but when the screen switching key 5c of the setting input unit 5 is operated, the fixed display mode is changed to the scroll display mode, and the entire image A1 of the inspection object 2 is displayed. The scroll display is performed in accordance with the movement of the inspection object 2.

As described above, according to the X-ray foreign matter detector 1 of the present embodiment, the width of the display area 6a of the display 5 corresponding to the transport direction of the inspection object 2 is changed according to the length of the inspection object 2. Since the variable control is performed, the entire image of the inspection object 2 showing the internal state at the time of X-ray exposure can be displayed at a time in the display area optimal for the length of the inspection object 2. As a result, when the inspected objects 2 conveyed on the belt conveyor 3 are judged one by one by visually checking the display screen of the display 6, the inspected objects 2 are mixed into the inspected objects 2. The presence or absence of foreign matter can be confirmed at a glance, and the position where foreign matter is mixed can be easily confirmed.
Further, even when a selection signal indicating a defective product is externally output from the X-ray foreign matter detection device 1 and “NG” indicating the defective product is displayed on the display device 6, the display screen of the display device 6 can be visually checked. The entire inspection object 2 can be checked at a glance, and the position where foreign matter is mixed can be easily checked.

Further, the whole image A1 of the inspection object 2 showing the internal state at the time of X-ray irradiation and displays B1 and C1 showing inspection results such as the quality judgment of the inspection object 2 are displayed on one display unit 6. The display can be efficiently performed by being divided within the limited display area 6a. As a result, different contents can be simultaneously displayed in the limited display area 6a of one display device 6, and the device is compared with the conventional configuration using two display devices as shown in FIG. The installation space occupied by the main body is also reduced, and the size of the apparatus can be reduced.

Further, the screen switching key 5c of the setting input section 5
Is operated, the inspection object 2 showing the internal state at the time of X-ray exposure
Fixed display or inspection object 2 according to the application
Can be selectively switched to a scroll display in accordance with the movement of. For example, the display 6
When the display screen of the display 6 is scrolled by operating the screen switching key 5c after the display area 6a is enlarged, the time during which the entire image A1 of the inspection object 2 stays in the display area 6a becomes longer. Therefore, oversight of presence or absence of foreign matter in the inspection object 2 is reduced, and more accurate inspection can be performed.

In the above-described embodiment, the display area 6a of the display 6 corresponds to two types of the test object 2 when the length of the test object 2 is longer and shorter than the reference length.
Has been described as an example in two steps, but the display area 6a of the display 6 may be switched in a plurality of steps according to the length of the inspection object 2.

[0052]

As is apparent from the above description, according to the present invention, the display area of the display is variably controlled in accordance with the length of the object to be inspected. In the display area, the whole image of the inspection object showing the internal state at the time of X-ray exposure can be displayed at a time. As a result, when inspecting the inspected objects sequentially conveyed one by one on the display screen of the display unit to determine the quality of the inspected object, it is possible to check at a glance whether or not there is a foreign substance mixed in the inspected object. Also, the position where foreign matter is mixed can be easily confirmed. Also, even when the inspection object is determined to be defective and “NG” indicating the defective item is displayed on the display, the entire inspection object can be checked at a glance by visually checking the display screen, and the position of the foreign matter mixed can be determined. It can be easily confirmed.

Further, an entire image showing the internal state of the inspection object at the time of X-ray exposure and a display showing the inspection result such as the quality judgment of the inspection object are displayed in a limited display area of one display. It can be divided and displayed efficiently. This allows
Different contents can be displayed simultaneously in a limited display area of one display, and the installation space occupied in the apparatus main body is reduced as compared with the conventional configuration using two displays, and the installation space of the apparatus is reduced. The size can be reduced.

Further, the whole image of the object to be inspected showing the internal state at the time of X-ray exposure can be selectively switched to a fixed display or a scroll display in accordance with the movement of the object to be inspected, depending on the application. For example, if the display area of the display is enlarged and the display screen is switched to scroll display, the time during which the entire image of the inspection object stays in the display area becomes longer, so that oversight of the inspection object with or without foreign matter is reduced. It is possible to perform more accurate inspection.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an overall configuration of an X-ray foreign matter detection device according to the present invention.

FIG. 2 is a perspective view showing an external appearance of an X-ray foreign matter detection device according to the present invention.

FIG. 3 is a block diagram showing an internal configuration of a display control unit of the X-ray foreign matter detection device according to the present invention.

FIG. 4 is a diagram showing an example of a display state when an object to be inspected is shorter than a reference length in the X-ray foreign matter detection device according to the present invention.

FIG. 5 is a diagram showing an example of a display state when an object to be inspected is longer than a reference length in the X-ray foreign matter detection device according to the present invention.

FIG. 6 is a flowchart of a process when displaying an inspection result of an inspection object on a display in the X-ray foreign matter detection device according to the present invention;

FIG. 7 is a diagram showing an example of a display screen of a display of a conventional X-ray foreign matter detection device.

[Description of Signs] 1 X-ray foreign matter detection device, 2 subject to inspection, 5 setting input unit, 5c screen switching key, 6 display unit, 6a display area, 15 display control means.

Continued on the front page F term (reference) 2F067 AA62 AA67 BB14 EE05 FF11 HH04 JJ03 KK06 LL03 LL14 NN03 PP15 RR30 SS02 SS13 UU33 2G001 AA01 BA11 CA01 DA01 DA02 DA08 FA01 FA06 GA04 HA12 HA13 JA09 JA13 JA20 KA20 LA01

Claims (4)

[Claims] An X-ray is irradiated on an object to be inspected (2).
The presence or absence of foreign matter in the inspection object is inspected from the amount of X-rays transmitted through the inspection object along with the radiation, and the inspection result is displayed in the display area of the display (6). In the X-ray foreign matter detection device (1), the length of the inspection object is set so that an entire image of the inspection object indicating the internal state at the time of the X-ray exposure is displayed in a display area of the display. An X-ray foreign matter detection device, comprising: display control means (15) for variably controlling the size of the display area in response to the change. 2. The display control means (15) displays an entire image of the inspection object showing an internal state at the time of the X-ray exposure, and displays the entire image of the inspection object in accordance with a size of the entire image of the inspection object. 2. The X-ray foreign matter detection apparatus according to claim 1, wherein the size of the display for judging the quality of the object to be inspected is changed and the screen is divided into display areas of the display and displayed on one screen. 3. A mode in which a whole image of the object to be inspected showing the internal state at the time of the X-ray exposure is fixedly displayed in a display area of the display (6), and the internal state at the time of the X-ray exposure. 2. A device according to claim 1, further comprising means for selectively switching between a mode of scrolling and displaying a whole image of the object to be inspected in the display area of the display in accordance with the movement of the object to be inspected. X-ray foreign matter detector. 4. A transport section (3) for transporting the inspection object (2), wherein the transport section inspects the inspection object for the presence or absence of foreign matter during the transportation of the inspection object. The X-ray foreign matter detection device according to any one of claims 1 to 3.