JP2018173374A - X-ray inspection equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform an inspection so that the inspection time is the shortest. An X-ray inspection apparatus (1) includes a data storage unit (410) that stores a plurality of inspection contents, and a plurality of inspections stored in the data storage unit (410) so that the inspection time is the shortest. It is provided with an optimization unit (420) that optimizes the order of inspection contents to be inspected by the X-ray inspection apparatus (1) based on the contents. [Selection diagram] Fig. 1

Description

  The present invention relates to an X-ray inspection apparatus.

  Patent Document 1 discloses an X-ray inspection apparatus that inspects an object to be inspected that has been conveyed by a conveyor with X-rays. The X-ray inspection apparatus of Patent Document 1 includes an irradiation unit that irradiates an inspection object with X-rays and an imaging unit that captures an X-ray transmission image of the inspection object irradiated with X-rays.

JP, 2006-002632 A (published January 12, 2016)

  In the conventional X-ray inspection apparatus as described above, when performing a plurality of inspections, the user changes the inspection order and determines the inspection order through trial and error so that the inspection time is minimized. The user performs the inspection by manually setting the determined inspection order in the X-ray inspection apparatus. Therefore, in the X-ray inspection apparatus, when changing the inspection order, the user needs to set the inspection order again. Also, when deleting some inspections or adding new inspections, the user needs to set the inspection order again. As described above, the X-ray inspection apparatus has a problem that the user needs to set the inspection order when performing the inspection, and the work becomes complicated.

  An object of one embodiment of the present invention is to perform an inspection so that the inspection time is minimized.

  An X-ray inspection apparatus for inspecting the inspection object using an X-ray transmission image obtained by irradiating the inspection object with X-rays from an irradiation unit, a data storage unit for storing a plurality of inspection contents, and inspection An optimization unit that optimizes the order of inspection contents to be inspected by the X-ray inspection apparatus based on a plurality of inspection contents stored in the data storage unit so that the time is minimized.

  According to the above configuration, the optimization unit optimizes the order of the inspection contents to be inspected by the X-ray inspection apparatus based on the plurality of inspection contents stored in the data storage unit so that the inspection time is minimized. Thereby, a plurality of inspections can be performed so that the inspection time is minimized without storing the order of the plurality of inspection contents in the X-ray inspection apparatus in advance. Even if some inspections are deleted or new inspections are added, the optimization unit optimizes the order of inspection contents, so the user can perform multiple inspections without setting the order of inspection contents again. It can be carried out.

  Each of the plurality of examination contents includes, for each examination, the position of the irradiation unit, the position of the imaging unit that captures the X-ray transmission image, the position of the inspection object, the X-ray output value of the irradiation unit, and the X The imaging time of the line transmission image and the image processing time of the X-ray transmission image may be included.

  The optimization unit may optimize the order so that the X-ray output values of the irradiation unit are in ascending order or descending order.

  According to the above configuration, the optimization unit optimizes the order of examination contents so that the X-ray output values of the irradiation unit are in ascending order or descending order, so that the increase or decrease in the X-ray output value of the irradiation unit is reduced. For this reason, the burden to an irradiation part can be reduced. In addition, the X-ray output value of the irradiation unit is easily adjusted.

  Each of the plurality of inspection contents may include an inspection standard in each inspection, and the optimization unit may make the inspection content of the strictest inspection standard first.

  According to the above configuration, the optimization unit sets the inspection content of the strictest inspection standard first. In this case, when the inspection object does not satisfy the inspection standard in the inspection of the inspection content of the strictest inspection standard, the inspection performed after the inspection is stopped. At this time, by making the inspection content of the strictest inspection standard first, the inspection time can be shortened when the inspection object does not satisfy the inspection standard in the inspection.

  According to one aspect of the present invention, there is an effect that the inspection can be performed so that the inspection time is minimized.

It is a block diagram which shows the X-ray inspection apparatus which concerns on Embodiment 1 of this invention. It is a perspective view which shows the structure of the X-ray inspection apparatus shown in FIG. It is the perspective view which notched a part which shows an internal structure in the X-ray inspection apparatus shown in FIG. It is a schematic diagram which shows the order of the inspection content in the X-ray inspection apparatus shown in FIG. It is a figure which shows the state by which the X-ray inspection apparatus shown in FIG. 1 is attached to the conveyor. (A) is a perspective view, (b) is a front view. It is a block diagram which shows the X-ray inspection apparatus which concerns on Embodiment 3 of this invention.

Embodiment 1
Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 1 to 5. FIG. 1 is a block diagram showing an X-ray inspection apparatus 1 according to Embodiment 1 of the present invention. FIG. 2 is a perspective view showing the structure of the X-ray inspection apparatus 1. FIG. 3 is a perspective view showing the internal structure of the main body 10 with a part cut away. As shown in FIG. 2, the X-ray inspection apparatus 1 includes a main body unit 10 and an attachment / detachment unit 20. The detachable part 20 is detachably attached to the main body part 10.

(Configuration of the main body 10)
The structure of the main-body part 10 is demonstrated based on FIG. As shown in FIG. 2, the main body unit 10 includes an alarm device 110, a touch panel 120 (display unit), a right convex part 130, a left convex part 140, an examination room 150, a main body caster 160, and a main body part supporting leg 170. ing. In the description of the main body 10, the direction from the examination room 150 toward the attachment / detachment part 20 is referred to as the front, and the direction from the attachment / detachment part 20 toward the examination room 150 is referred to as the rear.

  The alarm device 110 may be a sound output device such as a speaker that notifies an alarm or the like by sound. Further, the alarm device 110 may be a light emitting device such as Patrite (registered trademark) or LED that notifies an alarm or the like by light. Thus, the alarm device 110 may be any device that can notify the user of an alarm or the like, and a known configuration can be applied.

  The touch panel 120 is provided on the upper front surface of the main body unit 10. The touch panel 120 is composed of a full-dot liquid crystal display, and by operating a setting screen displayed on the touch panel 120, the main body 10 can be started and stopped, necessary operating conditions can be set, and inspection conditions can be set. It is like that. On the initial screen before the start of operation, for example, the intensity of X-rays from the irradiation unit 310 (described later) can be set. On the screen after the start of operation, for example, the detection sensitivity for processing an X-ray transmission image can be set. The touch panel 120 can set inspection items such as a missing item inspection, a foreign matter inspection, a cracked chip inspection, and inspection conditions as necessary. The touch panel 120 displays an X-ray transmission image when the inspection object A1 is irradiated with X-rays.

  The right convex portion 130 is provided so as to protrude from the right side surface of the main body portion 10 and is provided at the center of the right side surface of the main body portion 10. The right convex portion 130 may be provided anywhere as long as it is the right side surface of the main body portion 10. A notch 132 is formed on the tip surface 131 of the right convex portion 130. Moreover, the shape of the right side convex part 130 is a space in the center part of the front side of the right side convex part 130. The right side plate part 220 of the detachable part 20 is attached to the right convex part 130. When the right side plate part 220 is removed from the right side convex part 130, the central portion on the front side of the right side convex part 130 becomes a space.

  The shapes and positions of the left convex portion 140, the tip surface 141, and the cutout portion 142 are symmetrical with the shapes and positions of the right convex portion 130, the tip surface 131, and the cutout portion 132, respectively. The left-right symmetry means left-right symmetry when viewed from the front side of the main body 10.

  By providing the main body part 10 with the right convex part 130 and the left convex part 140, X-rays emitted from the irradiation part 310 (described later) can be made difficult to leak outside the examination room 150. Specifically, since the distance between the irradiation unit 310 and the notch 132 and the distance between the irradiation unit 310 and the notch 142 are increased, X-rays are less likely to leak out of the examination room 150. When viewed from the front side of the main body 10, the right convex portion 130 may be longer on the right side, and the left convex portion 140 may be longer on the left side. Thereby, since the distance between the irradiation part 310 and the notch part 132 and between the irradiation part 310 and the notch part 142 becomes still larger, X-rays are less likely to leak outside the examination room 150. be able to.

  Further, by attaching a lead-containing curtain (not shown) to the upper part of the notch part 132 and the upper part of the notch part 142, it is possible to prevent X-rays from leaking outside the examination room 150. Note that the installation location of the lead-containing curtain is not particularly limited as long as X-rays can be prevented from leaking outside the examination room 150.

  The examination room 150 has an entrance and an exit. Assuming that the inspection object A1 enters the main body portion 10 from the right side and exits from the left side, the entrance of the inspection chamber 150 is formed between the right side plate portion 220 and the cutout portion 132, and the exit of the inspection chamber 150 is It is formed between the left side plate part 230 and the notch part 142. The notch 132 and the notch 142 are opposed to each other, and their opening surfaces are parallel to each other. Further, the examination room 150 corresponds to a recessed part of the main body 10. An irradiation unit 310 that emits X-rays is installed below the examination room 150. An imaging unit 320 that receives X-rays emitted from the irradiation unit 310 is installed on the upper side of the examination room 150. Examples of the imaging unit 320 include a flat panel detector, an X-ray image intensifier, an X-ray CMOS (Complementary Metal Oxide Semiconductor) camera, an amorphous silicon camera, an amorphous selenium camera, a CdTex ray camera, an X-ray fluorescent camera, an X-ray film, Examples thereof include an imaging plate, an X-ray line sensor, and an X-ray TDI (Time Delay Integration) camera. In addition, the imaging unit 320 may be other than these.

  Further, X-rays are irradiated to the imaging unit 320, so that the X-rays are converted into image signals by the imaging unit 320. The image signal converted by the imaging unit 320 is input to a computer (not shown) built in the main body unit 10 and formed into an X-ray transmission image, and various inspections are performed based on the X-ray transmission image. The imaging unit 320 is driven along drive axes such as an X axis, a Y axis, and a Z axis. The irradiation unit 310 is driven along drive axes such as a Y axis, a Z axis, and a θ axis. The X axis is parallel to the ground and is an axis in the left-right direction when viewed from the front of the main body 10. The Y axis is parallel to the ground and is an axis in the front-rear direction when viewed from the front of the main body 10. The Z axis is a vertical axis of the main body 10 and is perpendicular to the ground. The θ axis is a rotation axis that rotates 45 degrees in the direction from the Z axis to the Y axis. In the irradiation unit 310 and the imaging unit 320, their arrangement and configuration of the drive shaft are not particularly limited as long as the main body unit 10 can inspect the inspection object A1. As described above, by driving the irradiation unit 310 and the imaging unit 320, the irradiation unit 310 can accurately irradiate the inspection object A1 with X-rays without deviation.

  The main body caster 160 is attached to the bottom surface of the main body 10. The main body caster 160 includes wheels so that the main body 10 can move. A main body support leg 170 that supports the main body 10 is attached to the bottom surface of the main body 10. The main body support legs 170 are structured such that the height of the main body support legs 170 can be adjusted, and the main body casters 160 are floated from the ground by increasing the height. Thereby, the main-body part 10 stops moving with respect to the ground.

(Configuration of the detachable portion 20)
The configuration of the detachable unit 20 will be described with reference to FIG. As shown in FIG. 2, the detachable portion 20 includes an opening / closing door 210, a window portion 211, a first handle portion 212, second handle portions 221 and 222, third handle portions 231 and 232, an upper plate portion 240, and a lower plate portion. 250, the 1st support part 260, the attaching / detaching part caster 270, and the 2nd support part 280 (not shown) are provided. In addition, the detachable portion 20 is attached to the lower front portion of the main body portion 10.

  As shown in FIG. 2, the open / close door 210 has a first handle portion 212 and can be opened and closed by rotating around the left side. The open / close door 210 is opened on the side opposite to the inspection room 150 side. When the detachable part 20 is attached to the main body part 10 and the open / close door 210 is closed, the open / close door 210 faces the inspection chamber 150 of the main body part 10. The open / close door 210 has a window portion 211 in the center of the front surface.

  The first handle portion 212 is attached to the right center of the front surface of the opening / closing door 210, and when the user opens / closes the opening / closing door 210, the user opens / closes the opening / closing door 210 while holding the first handle portion 212.

  The right side plate portion 220 is attached to the right side of the open / close door 210 such that the front face faces forward, at a position adjacent to the open / close door 210. The front surface of the right side plate portion 220 is parallel to the front surface of the open / close door 210. Further, the right side plate portion 220 is attached to the right side convex portion 130 so that the back surface of the right side plate portion 220 and the right side convex portion 130 are combined. The right side plate portion 220 includes second handle portions 221 and 222. The second handle portions 221 and 222 are attached to the front surface of the right side plate portion 220. When the user removes the right side plate part 220, the user removes the right side plate part 220 while grasping one of the second handle parts 221 and 222. In FIG. 2, the second handle portions 221 and 222 are attached, but the number of the second handle portions is not particularly limited.

  The left side plate portion 230 and the third handle portions 231 and 232 are symmetrical with the right side plate portion 220 and the second handle portions 221 and 222. The left-right symmetry means left-right symmetry when viewed from the front side of the main body 10.

  The upper plate part 240 is attached to the upper side of the open / close door 210 at a position adjacent to the open / close door 210 and with the front face facing forward. The front surface of the upper plate portion 240 is parallel to the front surface of the open / close door 210. The lower plate portion 250 is attached to a position adjacent to the opening / closing door 210 and to the lower side of the opening / closing door 210 so that the front surface faces forward. The front surface of the lower plate portion 250 is parallel to the front surface of the open / close door 210.

  The 1st support part 260 is a member for enabling the attachment / detachment part 20 to stand upright independently. The first support part 260 has a rectangular frame shape. The first support part 260 is parallel to the ground.

  The detachable part caster 270 is attached to the bottom surface of the first support part 260. The detachable part caster 270 includes wheels so that the detachable part 20 can move. An attachment / detachment part support leg 290 (not shown) is attached to the bottom surface of the attachment / detachment part 20. The detachable part support leg 290 has a structure in which the height of the detachable part support leg 290 can be adjusted. By increasing the height, the detachable part support leg 290 comes into contact with the ground. Thereby, the detachable part 20 does not move with respect to the ground.

(Internal structure of main body 10)
Next, the internal configuration of the main body 10 will be described with reference to FIG. As shown in FIG. 1, the main body unit 10 includes an irradiation unit 310, an imaging unit 320, a stage 330, a first moving unit 340, a second moving unit 350, a third moving unit 360, a power supply circuit 370, and a control device 300. I have. The main body unit 10 inspects the inspection object A1 using an X-ray transmission image obtained by irradiating the inspection object A1 with X-rays from the irradiation unit 310.

  The irradiation unit 310 irradiates the inspection object A1 with X-rays. The irradiation unit 310 uses an X-ray source (for example, an X-ray tube) that generates X-rays. As shown in FIG. 3, the irradiation unit 310 is provided below the examination room 150.

  The imaging unit 320 captures an X-ray transmission image of the inspection object A1 obtained by irradiation from the irradiation unit 310. The imaging unit 320 supplies the captured X-ray transmission image to the data storage unit 410. In addition, the imaging unit 320 is provided on the upper side of the examination room 150 as shown in FIG.

  The power supply circuit 370 is a power supply circuit that drives the irradiation unit 310 and is connected to the irradiation unit 310.

  The control device 300 includes an image processing unit 380, a change control unit 390, a position control unit 400, a data storage unit 410, an optimization unit 420, and an inspection execution unit 430. The control device 300 controls the irradiation unit 310 and the imaging unit 320 so as to perform inspection.

  The change control unit 390 instructs the power supply circuit 370 to change the output value of the X-rays irradiated by the irradiation unit 310. The power supply circuit 370 changes the output value of the X-rays irradiated by the irradiation unit 310 in accordance with an instruction from the change control unit 390. Further, the change control unit 390 instructs the image processing unit 380 to change the contents of the image processing. The change control unit 390 stores the changed X-ray output value and image processing content in the data storage unit 410.

  The position control unit 400 uses the first moving unit 340 to change the position of the irradiation unit 310 in the examination room 150. Specifically, the position control unit 400 instructs the first moving unit 340 to change the position of the irradiation unit 310. The first moving unit 340 moves the position of the irradiation unit 310 in accordance with an instruction from the position control unit 400. Further, the position control unit 400 changes the position of the imaging unit 320 in the examination room 150 using the second moving unit 350 in the same manner as the position of the irradiation unit 310 is moved. Furthermore, the position control unit 400 changes the position of the stage 330 in the examination room 150 using the third moving unit 360 in the same manner as the position of the irradiation unit 310 is moved. The stage 330 is a table for placing the inspection object A1. The position control unit 400 changes the position of the inspection object A <b> 1 by changing the position of the stage 330.

  Thereby, the irradiation unit 310 can irradiate X-rays at various positions in the examination room 150. The imaging unit 320 can capture X-ray transmission images at various positions in the examination room 150. Further, the inspection object A1 can be arranged at various positions.

  The position control unit 400 stores the changed information on the positions of the irradiation unit 310, the imaging unit 320, and the stage 330 in the data storage unit 410. The structures of the first moving unit 340, the second moving unit 350, and the third moving unit 360 are not particularly limited as long as the positions of the irradiation unit 310, the imaging unit 320, and the stage 330 can be changed. For example, the first moving unit 340, the second moving unit 350, and the third moving unit 360 are mechanisms that change the positions of the irradiation unit 310, the imaging unit 320, and the stage 330, respectively.

  The data storage unit 410 stores a plurality of inspection contents performed by the X-ray inspection apparatus 1. Specifically, the user connects a PC (Personal Computer) to the X-ray inspection apparatus 1 and inputs a plurality of inspection contents to the PC. The PC supplies a plurality of input inspection contents to the control device 300. The control device 300 stores the plurality of supplied inspection contents in the data storage unit 410. Since a plurality of inspection contents are input by the PC, the input of the plurality of inspection contents may be performed by a keyboard and a mouse, or may be performed by a touch panel included in the PC. In addition, the user inputs a plurality of inspection contents on the touch panel 120 without connecting a PC to the X-ray inspection apparatus 1, whereby a plurality of inspection contents are input to the control device 300. The control device 300 may store a plurality of input examination contents in the data storage unit 410. The data storage unit 410 stores the positions of the irradiation unit 310, the imaging unit 320, and the stage 330 in a plurality of examination contents. In addition, the data storage unit 410 stores the X-ray output value of the irradiation unit 310 and the image processing time of the X-ray transmission image captured by the imaging unit 320 in a plurality of examination contents. That is, each of the plurality of examination contents includes image processing of the position of the irradiation unit 310, the position of the imaging unit 320, the position of the inspection object A1, the X-ray output value of the irradiation unit 310, and the X-ray transmission image in each inspection. Including time. Further, the data storage unit 410 stores an X-ray transmission image captured by the imaging unit 320. For example, it is assumed that the inspection contents of three inspections, inspection C1, inspection C2, and inspection C3, are stored in the data storage unit 410.

  The optimization unit 420 is an X-ray inspection apparatus based on a plurality of inspection contents stored in the data storage unit 410 so that the inspection time is minimized when the optimization button displayed on the touch panel 120 is touched by the user. The order of inspection contents to be inspected in 1 is optimized. The optimization button may be provided on the main body unit 10. The optimization unit 420 stores the optimized order of examination contents in the data storage unit 410. Consider a case where the optimization unit 420 optimizes the order of inspection contents so that the inspection time is minimized. For example, the case of calculating the inspection time when the inspection is performed in the order of inspection C1, inspection C2, and inspection C3 will be described below with reference to FIG. FIG. 4 is a schematic diagram showing the order of inspection contents in the main body 10. In FIG. 4, the right direction is the direction in which time advances.

  As shown in FIG. 4, the inspection order when the inspection is performed in the order of inspection C1, inspection C2, and inspection C3 is the following order (1) to (12). After the inspection C3, the inspection C1 is performed again.

  (1) Imaging by the imaging unit 320 (inspection C1), (2) Image processing by the imaging unit 320 (inspection C1), (3) Movement of the irradiation unit 310, the imaging unit 320, and the inspection object A1 (inspection C1 → inspection) C2), (4) X-ray output value change of the irradiation unit 310 (inspection C1 → inspection C2), (5) imaging by the imaging unit 320 (inspection C2), (6) image processing by the imaging unit 320 (inspection C2) (7) Movement of irradiation unit 310, imaging unit 320, and inspection object A1 (inspection C2 → inspection C3), (8) Change of X-ray output value of irradiation unit 310 (inspection C2 → inspection C3), (9) ) Imaging by the imaging unit 320 (inspection C3), (10) Image processing by the imaging unit 320 (inspection C3), (11) Movement of the irradiation unit 310, the imaging unit 320, and the inspection object A1 (inspection C3 → inspection C1) (12) Change of X-ray output value of irradiation unit 310 Inspection C3 → an inspection C1). In addition, in FIG. 4, the processing time of (1)-(12) is shown.

  The process (2) is performed in parallel with the processes (3) and (4), the process (6) is performed in parallel with the processes (7) and (8), and the process (10) is performed. It is performed in parallel with the processing of (11) and (12). That is, the image processing is performed in parallel with the movement between examinations and the change of the X-ray output.

  The optimization unit 420 refers to the position of the irradiation unit 310, the position of the imaging unit 320, and the position of the stage 330 when performing the inspection C1 from the data storage unit 410. In addition, the optimization unit 420 refers to the position of the irradiation unit 310, the position of the imaging unit 320, and the position of the stage 330 when performing the inspection C2 from the data storage unit 410. Further, the optimization unit 420 refers to the position of the irradiation unit 310, the position of the imaging unit 320, and the position of the stage 330 when performing the inspection C3 from the data storage unit 410. The optimization unit 420 calculates the movement time between each examination from these positions.

  For example, the optimization unit 420 calculates the time required for the irradiation unit 310 to move from the position of the irradiation unit 310 when performing the inspection C1 to the position of the irradiation unit 310 when performing the inspection C2. Further, the optimization unit 420 calculates the time required for the movement of the imaging unit 320 from the position of the imaging unit 320 when performing the inspection C1 to the position of the imaging unit 320 when performing the inspection C2. Further, the optimization unit 420 calculates the time required for the movement of the stage 330 from the position of the stage 330 when performing the inspection C1 to the position of the stage 330 when performing the inspection C2. The optimization unit 420 sets the longest time among these times as the first movement time.

  Further, the optimization unit 420 obtains, from the data storage unit 410, the X-ray output value from the irradiation unit 310 when performing the inspection C1, the X-ray output value from the irradiation unit 310 when performing the inspection C2, and the inspection C3. The output value of the X-ray by the irradiation part 310 when performing is referred. The optimization unit 420 calculates the time required for changing the X-ray output between each examination from these output values.

  For example, the optimization unit 420 calculates the time required for the X-ray output by the irradiation unit 310 when performing the inspection C1 to be changed to the X-ray output by the irradiation unit 310 when performing the inspection C2. The optimization unit 420 sets this time as the first output change time.

  Further, the optimization unit 420 reads from the data storage unit 410 the imaging time by the imaging unit 320 when performing the inspection C1, the imaging time by the imaging unit 320 when performing the inspection C2, and the imaging unit 320 when performing the inspection C3. Refer to the imaging time by.

  The optimization unit 420 determines the order of examination contents so that the examination time is minimized from the movement time between examinations, the time required to change the X-ray output between examinations, and the imaging time of each examination. To optimize. This will be specifically described below.

  The optimization unit 420 sets the longer one of the first movement time and the first output change time (hereinafter referred to as the first time). The optimization unit 420 sets the longer one of the second movement time and the second output change time (hereinafter referred to as the second time). The optimization unit 420 sets the longer one of the third movement time and the third output change time (hereinafter referred to as the third time). The second movement time, the second output change time, the third movement time, and the third output change time will be described below.

  The second travel time will be described. The optimization unit 420 calculates the time required for the irradiation unit 310 to move from the position of the irradiation unit 310 when performing the inspection C2 to the position of the irradiation unit 310 when performing the inspection C3. Further, the optimization unit 420 calculates the time required for the movement of the imaging unit 320 from the position of the imaging unit 320 when performing the inspection C2 to the position of the imaging unit 320 when performing the inspection C3. Further, the optimization unit 420 calculates the time required for the movement of the stage 330 from the position of the stage 330 when performing the inspection C2 to the position of the stage 330 when performing the inspection C3. The optimization unit 420 sets the longest time among these times as the second movement time.

  The second output change time will be described. The optimization unit 420 calculates the time required for the X-ray output by the irradiation unit 310 when performing the inspection C2 to be changed to the X-ray output by the irradiation unit 310 when performing the inspection C3. The optimization unit 420 sets this time as the second output change time.

  The third travel time will be described. As in the case of calculating the second movement time, the optimization unit 420 moves the irradiation unit 310 from the position of the irradiation unit 310 when performing the inspection C3 to the position of the irradiation unit 310 when performing the inspection C1. Calculate the time required. Further, the optimization unit 420 calculates the time required for the movement of the imaging unit 320 from the position of the imaging unit 320 when performing the inspection C3 to the position of the imaging unit 320 when performing the inspection C1. Further, the optimization unit 420 calculates the time required for the movement of the stage 330 from the position of the stage 330 when performing the inspection C3 to the position of the stage 330 when performing the inspection C1. The optimization unit 420 sets the longest time among these times as the third movement time.

  The third output change time will be described. As in the case of calculating the second output change time, the optimization unit 420 converts the X-ray output from the irradiation unit 310 when performing the inspection C3 into the X-ray output from the irradiation unit 310 when performing the inspection C1. The time required for the change is calculated. The optimization unit 420 sets this time as the third output change time.

  The optimization unit 420 (1) Time required for imaging by the imaging unit 320 in the inspection C1, first time, (5) Time required for imaging by the imaging unit 320 in the inspection C2, second time, (9) In the inspection C3 The time required for imaging by the imaging unit 320 and the total of the third time are calculated. The optimization unit 420 sets the total as the inspection time when the inspection is performed in the order of inspection C1, inspection C2, and inspection C3. Similarly, the optimization unit 420 calculates the inspection time in other orders, and selects the order of the inspection contents that minimizes the inspection time, thereby optimizing the order of the inspection contents. The other order is an order other than the order of the inspection C1, the inspection C2, and the inspection C3 in the inspection C1, the inspection C2, and the inspection C3. For example, the order of the inspection C1, the inspection C3, and the inspection C2 It is.

  As a result, if the inspection time can be reduced as much as possible in one X-ray inspection apparatus, the inspection time can be significantly reduced in a production line provided with a plurality of X-ray inspection apparatuses. For this reason, while being able to reduce cost, the lifetime of an X-ray inspection apparatus can be lengthened.

  In the two adjacent examinations, even if the order is reversed, the movement time between examinations and the time required for changing the X-ray output between examinations do not change. For example, comparing the case where the inspection C2 is performed after the inspection C1 and the case where the inspection C1 is performed after the inspection C2, the moving time between the inspection C1 and the inspection C2 is the same in either case. Further, the time required for changing the X-ray output between the inspection C1 and the inspection C2 is the same in either case. The movement time between the inspection C1 and the inspection C2 is calculated by the same method as the first movement time described above. The time required for changing the X-ray output between the inspection C1 and the inspection C2 is calculated in the same manner as the first output change time described above.

  As shown in FIG. 4, when the time of image processing by the imaging unit 320 in (6) inspection C2 is longer than the second time, the processing in (6) is parallel to the imaging by the imaging unit 320 in (9) inspection C3. Done. If the process (6) is not completed even after the process (9) is completed, the process (6) is performed in parallel with the processes (10) to (12).

  The inspection execution unit 430 executes the inspection based on the inspection order optimized by the optimization unit 420. Specifically, when the examination execution unit 430 moves to the next examination in the examination order, the X-ray output value irradiated by the irradiation unit 310 and the content of the image processing performed by the imaging unit 320 are sent to the change control unit 390. Instruct to change. In addition, the inspection execution unit 430 instructs the position control unit 400 to change the position of the irradiation unit 310, the position of the imaging unit 320, and the position of the stage 330. Further, the inspection execution unit 430 instructs the irradiation unit 310 to irradiate X-rays, and instructs the imaging unit 320 to start capturing an X-ray transmission image of the inspection object A1. In this way, the inspection execution unit 430 executes an inspection.

(Structure with the conveyor 50 attached to the main body 10)
Next, a structure in a state where the conveyor 50 (conveyance unit) is attached to the main body unit 10 will be described with reference to FIG. FIG. 5 is a view showing a state where the main body 10 shown in FIG. 2 is attached to the conveyor 50. 5A is a perspective view, and FIG. 5B is a front view.

  As shown in FIGS. 5A and 5B, the conveyor 50 is installed between the notch portion 132 of the right convex portion 130 and the notch portion 142 of the left convex portion 140. The conveyor 50 is installed on the bottom surface of the inspection room 150. Moreover, the conveyor 50 is arrange | positioned at the bottom face of the inspection room 150 so that the upper part of the irradiation part 310 may be passed. In this case, the conveyor 50 passes below the imaging unit 320. As a result, the inspection object A1 conveyed by the conveyor 50 passes below the imaging unit 320 and above the irradiation unit 310. Therefore, the irradiation unit 310 irradiates the inspection object A1 with X-rays, and the imaging unit 320 X-rays transmitted through the inspection object A1 can be detected. The conveyor 50 may be another object as long as it can convey the inspection object A1 instead of the conveyor. The conveyor 50 passes through the main body 10.

  In addition, the main-body part 10 is not necessarily limited to the structure in which the conveyor 50 is provided. For example, the main body 10 may be configured such that the inspection object A1 is inspected by disposing the inspection object A1 in the inspection room 150 without the conveyor 50 being provided.

  As described above, in the X-ray inspection apparatus 1, the optimization unit 420 sets the inspection contents to be inspected by the X-ray inspection apparatus 1 based on the plurality of inspection contents stored in the data storage unit 410 so that the inspection time is minimized. Optimize the order. Thereby, a plurality of inspections can be performed so that the inspection time is minimized without storing the order of the plurality of inspection contents in the X-ray inspection apparatus 1 in advance. Even if some inspections are deleted or new inspections are added, the optimization unit 420 optimizes the order of inspection contents, so that the user does not need to set the order of inspection contents again. It can be performed.

[Embodiment 2]
Another embodiment of the present invention will be described as follows. For convenience of explanation, members having the same functions as those described in the embodiment are given the same reference numerals, and descriptions thereof are omitted.

  A case will be described in which the optimization unit 420 optimizes the order of inspection contents so that the output values of the X-rays irradiated by the irradiation unit 310 are in ascending order or descending order in a plurality of inspections. This will be specifically described below. The optimization unit 420 optimizes the order of inspection contents so that the output values of the X-rays irradiated by the irradiation unit 310 are in ascending order or descending order in a plurality of inspections. For example, the optimization unit 420 refers to the X-ray output value of each inspection from the data storage unit 410 in each of the inspection C1, inspection C2, and inspection C3. It is assumed that the X-ray output value of inspection C1 is 40 kV, the X-ray output value of inspection C2 is 60 kV, and the X-ray output value of inspection C3 is 80 kV. When the output values of the X-rays are in ascending order, they are 40 kV, 60 kV, and 80 kV. Therefore, when the optimization unit 420 optimizes the inspection order so that the output values of the X-rays irradiated by the irradiation unit 310 are in ascending order, the order is inspection C1, inspection C2, and inspection C3. On the other hand, when the optimization unit 420 optimizes the inspection order so that the output values of the X-rays irradiated by the irradiation unit 310 are in descending order, the order is inspection C3, inspection C2, and inspection C1.

  As described above, the optimization unit 420 optimizes the order of examination contents so that the X-ray output values of the irradiation unit 310 are in ascending order or descending order, so that the increase / decrease in the X-ray output value of the irradiation unit 310 is reduced. For this reason, the burden on the irradiation unit 310 can be reduced. In addition, the X-ray output value of the irradiation unit 310 is easily adjusted.

[Embodiment 3]
The following will describe another embodiment of the present invention with reference to FIG. For convenience of explanation, members having the same functions as those described in the embodiment are given the same reference numerals, and descriptions thereof are omitted.

(Configuration of main body 10a)
As shown in FIG. 6, the X-ray inspection apparatus 2 is different from the X-ray inspection apparatus 1 in that the main body 10 is changed to a main body 10 a. The main body 10 a is different from the main body 10. The control device 300 is different from the control device 300a. The control device 300a is different from the control device 300 in that it includes a determination unit 510 and a cancellation unit 520. Each of a plurality of inspection contents performed by the X-ray inspection apparatus 2 includes an inspection standard in each inspection.

  When the determination unit 510 is notified by the inspection execution unit 430 that the inspection has been completed, the data storage unit 410 refers to the X-ray transmission image captured by the imaging unit 320, and the inspection object A1 is in the inspection. Determine whether the inspection criteria are met. If the determination unit 510 determines that the inspection object A1 satisfies the inspection standard in the inspection, the determination unit 510 instructs the inspection execution unit 430 to execute the next inspection. On the other hand, when the determination unit 510 determines that the inspection object A1 does not satisfy the inspection standard, the determination unit 510 supplies the determination result to the cancellation unit 520.

  The cancellation unit 520 receives a determination result that the inspection object A1 does not satisfy the inspection standard from the determination unit 510, and instructs the inspection execution unit 430 to cancel the inspection performed after the inspection. . The inspection execution unit 430 stops the inspection performed later in accordance with the instruction from the cancellation unit 520.

  The optimization unit 420 sets the inspection content of the strictest inspection standard first in a plurality of inspections. Specifically, it is assumed that the inspection C3 includes an inspection content having the strictest inspection standard among the inspections C1 to C3. At this time, the optimization unit 420 sets the inspection C3 including the inspection content of the strictest inspection standard first in the plurality of inspections.

  Note that the X-ray inspection apparatus 2 may perform a plurality of inspections in advance and calculate a defect rate for each inspection. In this case, the defect rate of each inspection is stored in the data storage unit 410 in advance. The optimization unit 420 may refer to the defect rate of each inspection stored in advance from the data storage unit 410, and may make the inspection with the highest defect rate among a plurality of inspections first.

  As described above, the optimization unit 420 sets the inspection content of the strictest inspection standard first. In this case, when the inspection object A1 does not satisfy the inspection standard in the inspection of the inspection content of the strictest inspection standard, the inspection performed after the inspection is stopped. At this time, by making the inspection content of the strictest inspection standard first, the inspection time can be shortened when the inspection object A1 does not satisfy the inspection standard in the inspection.

[Embodiment 4]
Another embodiment of the present invention will be described as follows. For convenience of explanation, members having the same functions as those described in the embodiment are given the same reference numerals, and descriptions thereof are omitted.

  The user can select one mode from among a plurality of modes using the touch panel 120. The plurality of modes include (1) automatic mode, (2) travel time priority mode, (3) X-ray output value priority mode, and (4) inspection determination priority mode.

  (1) In the automatic mode, the optimization unit 420 first performs the process of the third embodiment, and when it is found that there are many inspection objects that satisfy the inspection standard, the optimization unit 420 switches to the process of the first embodiment. For example, when a ratio calculation unit (not shown) included in the control device 300a calculates that the ratio of the inspection object that satisfies the inspection standard is 95% or more, the optimization unit 420 performs the processing from the processing of the third embodiment. Switch to the processing of Form 1.

  The optimization unit 420 (2) performs the processing of the first embodiment in the travel time priority mode, (3) performs the processing of the second embodiment in the X-ray output value priority mode, and (4) in the examination determination priority mode. Then, the processing of the third embodiment is performed.

[Example of software implementation]
The control blocks (particularly the image processing unit 380, the change control unit 390, the position control unit 400, the optimization unit 420, the inspection execution unit 430, the determination unit 510, and the cancellation unit 520) of the control devices 300 and 300a are integrated circuits ( It may be realized by a logic circuit (hardware) formed on an IC chip) or the like, or may be realized by software using a CPU (Central Processing Unit).

  In the latter case, the control devices 300 and 300a include a CPU that executes instructions of a program that is software that implements each function, and a ROM (Read Only Memory) in which the program and various data are recorded so as to be readable by the computer (or CPU). ) Or a storage device (these are referred to as “recording media”), a RAM (Random Access Memory) for expanding the program, and the like. And the objective of this invention is achieved when a computer (or CPU) reads the said program from the said recording medium and runs it. As the recording medium, a “non-temporary tangible medium” such as a tape, a disk, a card, a semiconductor memory, a programmable logic circuit, or the like can be used. The program may be supplied to the computer via an arbitrary transmission medium (such as a communication network or a broadcast wave) that can transmit the program. Note that one embodiment of the present invention can also be realized in the form of a data signal embedded in a carrier wave, in which the program is embodied by electronic transmission.

  The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope shown in the claims, and embodiments obtained by appropriately combining technical means disclosed in different embodiments. Is also included in the technical scope of the present invention.

  1.2 X-ray inspection apparatus, 10 / 10a Main body part, 20 Detachable part, 50 Conveyor, 110 Alarm, 120 Touch panel, 130 Right convex part, 131 Tip surface, 140 Left convex part, 150 Inspection room, 160 Main part caster , 170 Main body support legs, 210 Opening / closing door, 211 Window portion, 212 First handle portion, 221 and 222 Second handle portion, 231 and 232 Third handle portion, 220 Right side plate portion, 230 Left side plate portion, 240 Upper side plate Part, 250 lower plate part, 260 first support part, 270 attachment / detachment part caster, 280 second support part, 290 attachment / detachment part support leg, 300 / 300a control device, 310 irradiation part, 320 imaging part, 330 stage, 340 first Moving unit, 350 Second moving unit, 360 Third moving unit, 370 Power supply circuit, 380 Image processing unit, 390 Change system Control unit, 400 position control unit, 410 data storage unit, 420 optimization unit, 430 inspection execution unit, 510 determination unit, 520 cancellation unit, A1 inspection object, C1, C2, C3 inspection

Claims (4)

An X-ray inspection apparatus that inspects the inspection object using an X-ray transmission image obtained by irradiating the inspection object from an irradiation unit,
A data storage unit for storing a plurality of examination contents;
An optimization unit that optimizes the order of inspection contents to be inspected by the X-ray inspection apparatus based on a plurality of inspection contents stored in the data storage unit so as to minimize the inspection time. X-ray inspection equipment.   Each of the plurality of examination contents includes, for each examination, the position of the irradiation unit, the position of the imaging unit that captures the X-ray transmission image, the position of the inspection object, the X-ray output value of the irradiation unit, and the X The X-ray inspection apparatus according to claim 1, comprising an imaging time of a line transmission image and an image processing time of the X-ray transmission image.   The X-ray inspection apparatus according to claim 2, wherein the optimization unit optimizes the order so that X-ray output values of the irradiation unit are in ascending order or descending order. Each of the plurality of inspection contents includes an inspection standard in each inspection,
The X-ray inspection apparatus according to claim 1, wherein the optimization unit sets the inspection content of the strictest inspection standard first.

Images