JPH07181147A - X-ray foreign matter inspection device - Google Patents

Abstract

PURPOSE:To enable the inspection of a rectangular prism-shaped subject so large as not to be in the visual field of a receiver from multiple directions by arranging a moving mechanism to position the subject at an arbitrary position with respect to a receiving surface of an X-ray receiver having a program- controlled motor. CONSTITUTION:A photographing mode is selected with a control panel on a console. When a power source switch is turned ON, an opening/closing door is opened and a support base 9 for a subject goes out of a scanner part to stop. The subject 10 is mounted on a holding jig 24 on the support base 9. A lock lever 27 moves out onto the subject 10 by the operation of a start switch, the support base 9 comes into the scanner part and the opening/closing door is closed. The subject 10 moves to a first fluoroscopy position according to a data inputted and stops to undergo a fluoroscopy with an image intensifier 5 at a first part. Thereafter, the subject 10 is moved to the second fluoroscopy position and stops to undergo a fluoroscopy at a second part for taking a data. Then, the subject is turned about the Z axis moving in the direction Y to take the data at the third part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an X-ray foreign substance inspection apparatus for detecting and inspecting foreign substances adhering to or mixed with an object to be inspected, such as nuts mixed in the airbag in the manufacturing process of the airbag, by X-rays. , Especially X-rays that enable efficient fluoroscopic inspection from various directions for inspected objects of various shapes
The present invention relates to a wire foreign matter inspection device.

[0002]

2. Description of the Related Art A conventional X-ray foreign matter inspection apparatus, as shown in FIG. 8, has a relatively small cylindrical object to be inspected on a table (not shown) which moves in one direction (a direction) by a constant distance l1. 81 is placed and positioned in the X-ray shielding box 82 between the X-ray tube device 83 and the X-ray image receiving device 84, and in this state,
The radio tube device 83 and the X-ray image receiving device 84 are operated to see through,
The foreign matter mixed in the inspection object 81 is inspected.

[0003]

As described above, in the prior art, the object 81 to be inspected moves only in one direction by the constant distance l1, and does not enter the image receiving range 85 of the X-ray image receiving device 84 or relatively. It is not possible to inspect the object 81 other than a relatively small cylindrical object such as a large rectangular parallelepiped or a shape that is not simple, and even if it is possible, it is because the direction is artificially changed. There was a problem that it took time and labor.

An object of the present invention is to perform a large number of fluoroscopic inspections in a variety of directions in a short time from various directions with a simple operation, including a relatively large rectangular parallelepiped shape that does not enter the visual field of the X-ray image receiving apparatus. An object is to provide an X-ray foreign matter inspection device.

[0005]

The above object is to provide an X-ray tube device and an X-ray image receiving device provided so as to face the X-ray tube device, and between the X-ray tube device and the X-ray image receiving device. In an X-ray foreign matter inspection device that supports an inspection object and operates the X-ray tube device and the X-ray image receiving device in that state to perform a fluoroscopic inspection of the inspection object, a motor that is program-controlled is provided,
This is achieved by providing an inspection object moving mechanism for positioning the inspection object at an arbitrary position with respect to the image receiving surface of the X-ray image receiving apparatus.

[0006]

The mechanism for moving the object to be inspected is provided with a motor which is program-controlled to position the object to be inspected at an arbitrary position with respect to the image receiving surface of the X-ray image receiving apparatus. As a result, even if the X-ray image receiving device (image intensifier) does not enter the field of view or the inspection object has various shapes, it can be easily operated.
It has become possible to perform a large number of fluoroscopic examinations from multiple directions in a short time.

[0007]

EXAMPLES Before describing specific examples of the present invention, the principle thereof will be described first. That is, the present invention is
As a result of examining the geometrical condition of the X-ray perspective range of the rectangular parallelepiped inspected object, the inspected object is moved in a short time to arbitrary positions in two orthogonal directions (arbitrary positions on the X and Y planes). It was found that even if an object to be inspected having a relatively large rectangular parallelepiped shape can be rotated and stopped so that the entire object can be fluoroscopically inspected in a short time, the present invention has been accomplished.

Next, an outline of an embodiment of the device of the present invention described later will be described. The apparatus of the present invention is provided with an X-ray tube device and an X-ray image receiving device facing it in a box shielded from X-rays, and supports an object to be inspected therebetween to inspect the image receiving surface in an arbitrary and short time. In order to position an object, it can be moved, rotated and stopped in two orthogonal directions by program control.

In the apparatus of the present invention, the drive motor used can be program-controlled, and examples of such a drive motor include a stepping motor. This drive motor is controlled by a dedicated controller to which a program is input. Programs such as the stop position, speed, and acceleration of the inspection object are input to the controller, and the inspection object can be arbitrarily moved, rotated, and stopped.

A microcomputer controls the entire system including the X-ray irradiation timing.
Therefore, if each program is entered according to the shape of the object to be inspected, it is possible to position the object to be inspected on the fluoroscopic device without any artificial intervention, to perform fluoroscopy and input the result to the dedicated image memory device. Become.

Embodiments of the present invention will be described below with reference to the drawings. 1 to 7 are views for explaining one embodiment of the X-ray foreign matter inspection apparatus according to the present invention, FIG. 1 is a front view showing an example of the external appearance of the present invention apparatus, and FIG. 2 is a plan view thereof. Figure 3
FIG. 3 is a perspective view showing an example of a main part of the device of the present invention, showing the positional relationship between the moving mechanism of the object to be inspected, the X-ray tube device and its image receiving device. 4 is a control panel side view of the console of the apparatus of the present invention shown in FIG. 3, and FIG. 5 is a plan view showing a schematic configuration of the apparatus of the present invention with the apparatus housing ceiling portion removed. In addition, these FIG.
5A and 5B, the same reference numerals indicate the same or corresponding parts.

The X-ray foreign matter inspection apparatus of the present invention, as shown in FIGS. 1 and 2, has an inspection object scanner unit 1 and an image processing and control unit unit mounted on the inspection object scanner unit 1. It consists of two.

The inspected object scanner unit 1 includes an X-ray tube device 3, a diaphragm device 4 attached to the X-ray tube device 3, and an X which faces them.
A line image receiving device (image intensifier 5, distributor 6, television camera 7) is attached. An inspection object support base 9 is installed in the opening / closing door 8, and an inspection object 10 is placed thereon.

An operation console 1 is provided outside the inspection object scanner unit 1.
1 is attached. As shown in FIG. 5, the X-ray generation unit of the inspection object scanner unit 1 is shielded by a lead plate 51 so that the X-rays do not leak out beyond a predetermined amount.

The image processing and control unit section 2 includes a television monitor 12, a microcomputer monitor 13, a microcomputer 14, a microcomputer keyboard 15, an image processing device 16, and a motor controller 1.
7, a video recorder (VTR) 18, a camera controller 19, and a manual operation panel (an operation panel used for a manual operation for a test of an inspection object moving mechanism) 20 are stored.

An inspection object moving mechanism 300, which is shown in detail in FIG. 3, is attached to the inspection object scanner unit 1, and the inspection object 10 is placed on the inspection object support base 9 and the holding jig 24. Can be arbitrarily moved in the X-Y directions, and can be arbitrarily rotated around the Z axis.

That is, a rotary shaft 28 around the Z axis is attached to the object support base 9, and a pulley (not shown) is attached to the rotary shaft 28. A stepping motor 32 is attached to the moving table 31, a timing pulley 33 is attached to the stepping motor 32, and a rotary shaft 2 around the Z axis is provided via a timing belt 34.
8 is connected to the pulley (not shown) attached to the same.

Further, Y-axis guide rails 36 are attached to both sides of the Y-direction moving guide wall 35, and the object to be inspected 1
The 0 part is guided in the Y direction. A Y-axis moving stepping motor 38 is attached to the Y-axis moving base 37, a timing pulley 39 is attached to the motor 38, and a timing pulley (FIG. (Not shown). The timing belt 40 is connected to the movable table 31 between the two timing pulleys.

In the above structure, the stepping motors 32 and 38 are arbitrarily started and stopped by program control via their driver circuits (not shown), so that the inspection object 10 can be positioned arbitrarily. Similarly to the Y-axis direction, the X-axis direction can be arbitrarily positioned by the X-axis moving stepping motor 41.

Next, the operation of the device of the present invention having the above configuration will be described. Control panel 11a attached to the console 11
(See FIG. 4), first, the shooting mode selection switch 2
1 selects the shooting mode. Subsequently, when the power switch 22 is turned on, the initial state is set. That is, the opening / closing door 8 is opened, and the inspected object support base 9 comes out from the inspected object scanner unit 1 to the outside and stops. At this position (inspection object mounting position D), the inspection object 10 is attached to the retaining jig 24 on the inspection object support base 9.

When the start switch 23 of the control panel 11a is pushed, the lock lever 27 comes out above the object to be inspected 10,
The inspection object support base 9 enters inside the inspection object scanner unit 1, and then the opening / closing door 8 is closed. The inspection object 10 moves to a first perspective position (for example, the position indicated by A in FIG. 5) and stops in accordance with the data input to the program. Then, at that position, the first part is seen through the image intensifier 5 and data is taken.

After that, the inspection object 10 moves to the second transparent position (the position shown by B in FIG. 5) and stops, and it is transparent as the second portion, and the data is taken. Next, while rotating in the Y direction and rotating around the Z axis, the transparent portion is brought closer to the image receiving surface of the image intensifier 5 and stopped, and its position (the position indicated by C in FIG. 5) is set to the third portion. See through,
Take the data.

Next, the object 10 to be inspected is returned to the preparation position E by moving it in the X direction and simultaneously rotating 90 °. Subsequently, at the same time when the opening / closing door 8 is opened, the inspection object 10 is brought out of the opening / closing door 8 (inspection object mounting position D) and stopped.

On the other hand, when the microcomputer 14 takes in the fluoroscopic data of the third region and the image processing device 16 performs image processing, the first fluoroscopic image is displayed on the television monitor 12. When there is no abnormality in the displayed perspective image and the pass switch 25 of the control panel 11a is pressed, the second perspective image is displayed on the television monitor 12. Similarly, when the pass switch 25 of the control panel 11a is pressed, the third perspective image is displayed on the television monitor 12. By similarly operating the third perspective image, the pass / fail of the first to third perspective images is determined.

When the pass / fail judgment is completed and the completion switch 26 of the control panel 11a is pushed, the lock lever 27 is moved to the inspection object 1
0 away from above. Next, the inspection object 10 is attached to the inspection object support base 9
Remove from the upper retaining jig 24. The first to third perspective images are recorded in the video recorder 18 and can be redisplayed on the television monitor 12 when desired.

The above is an example of the inspection, and the see-through position (region) of the inspection object 10 can be arbitrarily changed by changing the program. Further, the inspection object 10 itself also holds the retaining jig 2
It can be variously changed by the change of 4.

Incidentally, FIG. 6 shows the movement of the object support base 6 in the inspection (perspective inspection of the object 10 to be inspected from three directions) and the operation of each part corresponding thereto in the inspection in the above embodiment, and at the time of the inspection. The movement of the inspection object support base 6 seen from above is shown in FIG.
I will show you each. In this case, as shown in FIGS.
The same reference numerals as those in FIG. 5 indicate the same or corresponding portions.

[0028]

As described above, according to the present invention, various objects to be inspected including a relatively large rectangular parallelepiped shape which are not included in the visual field of the X-ray image receiving device (image intensifier) by a simple operation. There is an effect that a large number of fluoroscopy can be performed in a short time from multiple directions. For example, a 300 mm (length) × 200 mm (height) × 110 mm (width) inspected object can be fluoroscopically inspected in three directions in 30 seconds or less.

[Brief description of drawings]

FIG. 1 is a front view showing an example of the external appearance of a device of the present invention.

FIG. 2 is a plan view showing an example of the external appearance of the device of the present invention.

FIG. 3 is a perspective view showing an example of a main part of the device of the present invention.

FIG. 4 is a control panel side view of a console of the apparatus of the present invention shown in FIG.

FIG. 5 is a plan view showing the schematic configuration of the device of the present invention with the ceiling of the device casing removed.

FIG. 6 is a diagram for explaining the operation of the device of the present invention.

FIG. 7 is a diagram for explaining the operation of the device of the present invention.

FIG. 8 is a plan view showing a schematic configuration of a conventional device with the ceiling of the device casing removed.

[Explanation of symbols]

 1 Inspector Scanner Section 2 Image Processing and Control Unit Section 3 X-ray Tube Device 4 Aperture Device 5 Image Intensifier 6 Distributor 7 Television Camera 8 Open / Close Door 9 Inspected Object Support 10 Inspected Object 11 Operation Console 11a Operation Console Control panel 12 Television monitor 13 Microcomputer monitor 14 Microcomputer 15 Microcomputer keyboard 16 Image processing device 17 Motor controller 18 Video recorder 19 Camera controller 20 Manual operation panel 21 Shooting mode selection switch 22 Power switch 23 Startup switch 24 Hosadaji Tool 25 Pass switch 26 Complete switch 27 Lock lever 28 Rotating shaft 31 Moving table 32 Stepping motor 33 Timing pulley 34 Timing belt 35 Y direction moving guide wall 36 Y-axis guide rail 37 Y-axis moving table 38 Y-axis moving stepping motor 39 Timing pulley 40 Timing belt 41 X-axis moving stepping motor 300 Inspected object moving mechanism

Claims (1)

[Claims] 1. An X-ray tube device and an X-ray image receiving device provided so as to face the X-ray tube device.
The object to be inspected is supported between the line image receiving devices, and the X
In an X-ray foreign matter inspection device that operates a X-ray tube device and an X-ray image receiving device to perform a fluoroscopic inspection of the object to be inspected, a motor that is program-controlled is provided, and the object to be inspected is an image receiving surface of the X-ray image receiving device. An X-ray foreign matter inspection apparatus, characterized in that it is provided with an inspection object moving mechanism that positions it at an arbitrary position.