JP2011180114A - X-ray inspection device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an X-ray inspection device for adding X-ray inspection to an already built conveying line at low cost and in a saved space. <P>SOLUTION: In this X-ray inspection device 100, a receiver 600 receives an article B from a belt conveyor 900. Then, an X-ray inspection unit 700 performs contamination inspection of the article B received from the receiver 600. Then, a delivery unit 800 deliveries the article B inspected by the X-ray inspection unit 700 to the belt conveyor 900. An X-ray leak preventing cover 910 prevents leakage of X-rays radiated from the X-ray inspection unit 700. The receiver 600 and delivery unit 800 include a receiving table 611 that has a mounting unit of the article B formed of only a plane and mounts and conveys the article B, a delivery table 811, a guide plate 621 for assisting the movement of the article B, auxiliary guides 622 and 623, a guide plate 821, and auxiliary guides 822 and 823, respectively. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an X-ray inspection apparatus that detects foreign matter in an article.

  2. Description of the Related Art Conventionally, in order to detect foreign matter contained in an article, an X-ray detection apparatus that detects foreign matter using X-rays has been developed. For example, the fluoroscopic inspection apparatus described in Patent Document 1 relates to a fluoroscopic inspection apparatus that inspects an object to be inspected by irradiating radiation, and is particularly effective when inspecting a long workpiece that cannot be inspected by a single fluoroscopic inspection. An apparatus is disclosed.

  In the fluoroscopic inspection apparatus described in Patent Document 1, a table storage room and an inspection room having a radiation shielding structure are connected in series, and an inspection object is installed between the radiation generator and the fluoroscopic apparatus arranged in the inspection room. In the apparatus for performing a fluoroscopic inspection, a rotary table divided into a plurality of sections arranged across the table storage chamber and the inspection room, a table rotation driving device for intermittently rotating the rotary table by a predetermined angle, and a rotary table Provided in each of the sections, a mounting table on which an inspection object is mounted, an initial position setting device for setting the inspection object on the mounting table to an initial inspection position, and an inspection room And an inspection area changing device for changing the inspection area of the object to be inspected on the mounting table by rotating the mounting table of a certain section that has reached the inspection chamber by the rotation of the rotary table by a predetermined angle.

Japanese Utility Model Publication No. 59-117956

  As described above, in the transmission inspection apparatus described in Patent Document 1, since the X-ray inspection is performed by intermittent rotation by placing the long workpieces one by one in the section, it is not possible to inspect continuous articles, Furthermore, there is a problem that the size of the workpiece is limited to the size of the section.

  On the other hand, in recent years, it has begun to be required to perform X-ray inspection on articles that are continuously conveyed without stopping the articles. However, designing and installing a new X-ray inspection line in order to add an X-ray inspection process is very expensive and causes problems.

  In addition, various articles may be transported on one transport line, and it is not easy to add an X-ray inspection process uniformly.

An object of the present invention is to provide an X-ray inspection apparatus capable of adding an X-ray inspection to an already constructed transfer line at low cost and space saving.
Another object of the present invention is to provide an X-ray inspection apparatus that can add X-ray inspection to an already constructed transfer line and is compatible with various articles at low cost and space saving. is there.

(1)
An X-ray inspection apparatus according to one aspect is an X-ray inspection apparatus provided in a conveyance line that conveys an article, and includes a receiving unit that receives an article from the conveyance line, and an X-ray inspection that performs foreign object inspection of the article received from the receiving unit. An X-ray leakage prevention cover that prevents leakage of X-rays in the X-ray inspection unit, and a delivery unit that delivers an article inspected in the X-ray inspection unit to a conveyance line. The article placement section is composed only of a flat surface, and includes a rotary table that conveys the article while placing it, and a guide guide that assists in the movement of the article.

  In the X-ray inspection apparatus, an article is received from a conveyance line by a receiving unit. Next, the foreign matter inspection of the article received from the receiving unit is performed by the X-ray inspection unit. And the article | item inspected in the X-ray inspection part by the delivery part is delivered to a conveyance line. The X-ray leakage prevention cover prevents leakage of X-rays emitted from the X-ray inspection unit. The receiving unit and the delivery unit include a rotary table that is configured so that the article placement unit is only a flat surface and conveys the article while placing the article, and a guide guide that assists the movement of the article.

  In this case, by providing the X-ray leakage prevention cover, it is possible to prevent X-rays from leaking to the transport line side. In addition, since the receiving unit and the delivery unit include a rotary table and a guide guide, the X-ray inspection apparatus can be attached to a transport line that has already been constructed at low cost, and an X-ray inspection process can be easily added. . That is, it is possible to easily form an X-ray inspection line for inspecting an object to be inspected from an existing conveyance line using a rotary table and a guide guide.

  Furthermore, in the present invention, since the article placement portion of the rotary table is composed only of a flat surface, there is no need to replace the delivery table according to the article to be transported as in the prior art, and the shape of the article has changed. Even in this case, the article placement unit can reliably receive the article from the transport line, or can deliver the article from the X-ray inspection unit to the transport line.

  That is, conventionally, the transfer table is provided with a recess for the article or a wall for separating the article depending on the article to be conveyed. There is no need to replace the delivery table accordingly.

(2)
The X-ray inspection unit has a conveyance table for conveying the article in a circular arc shape, and the guide for the receiving unit and the delivery unit is provided between the conveyance line and the conveyance table. It is preferable that the articles are arranged so as to be conveyed in an arcuate path.

In this case, the article is conveyed along the circular arc path from the receiving unit to the delivery unit via the X-ray inspection unit. Therefore, since the conveyance path cannot be bent, the article can be stably conveyed. For example, when the conveyance path is constituted by a straight line, a bend is generated in the conveyance path. As a result, the posture of the article at the time of conveyance becomes unstable at the corner of the conveyance path.
On the other hand, when the article is conveyed along the circular arc trajectory, the article posture is not abruptly affected, so that the article can be conveyed smoothly and stably. A path for performing X-ray inspection can be formed.

(3)
The X-ray inspection unit includes an X-ray source and a detection device that receives X-rays emitted from the X-ray source. The X-ray source is provided above the transfer table and is irradiated from the X-ray source. The line may be provided so as to be irradiated obliquely from above to the article conveyed in an arc shape by the conveyance table, and the detection device may be provided at a position for receiving the irradiated X-ray. .

In this case, X-rays emitted from the X-ray source are received by the detection device. Therefore, the X-ray inspection of the article can be reliably performed. Moreover, since the X-ray source is provided above the transfer table, the installation space for the X-ray inspection apparatus can be reduced as compared with the case of irradiating X-rays from the outside of the transfer table.
In addition, in the case where the article is a liquid contained in a container, X-ray inspection is performed on the article conveyed in an arc shape, so that foreign matter in the article moves in the arc-shaped outer direction by centrifugal force. Foreign matter can be reliably detected by X-ray inspection.

(4)
It is preferable that the X-ray source emits X-rays in a direction away from the transport line.

  In this case, since the X-ray source emits X-rays in a direction away from the transport line, X-rays leak to the transport line side even when X-rays are irradiated from the X-ray source and diffusely reflected. Can be prevented.

(5)
The guide guide is composed of a pair of curved members. In this case, since the guide guide is composed of a pair of curved members, the article can be stably conveyed.

(6)
It is preferable that the guides of the receiving part and the delivery part have an adjusting part that adjusts according to the shape of the article.

  In this case, even when the size of the article is increased or decreased, the X-ray inspection on the article can be easily performed by adjusting the guide guide by the adjustment unit.

(7)
The transfer table may be made of carbon.

  In this case, the transfer table is made of carbon. Thereby, the conveyance table has an advantage that it easily transmits X-rays and does not affect the irradiation of X-rays. In addition, it is highly rigid and lightweight compared to metal, so it can hold the article securely, improve the rotation stability of the transfer table, and can include the increased weight in the inspection object. The capacity of the drive motor in can be reduced, and low cost and power saving can be realized.

  According to the X-ray inspection apparatus of the present invention, it is possible to add an X-ray inspection to an already constructed transport line at low cost and space saving.

Schematic plan view showing an example of a schematic configuration of the X-ray inspection apparatus according to the present embodiment Schematic side view for explaining the outline of the X-ray inspection apparatus of FIG. Schematic diagram for explaining an example of attaching an X-ray inspection apparatus to a belt conveyor Schematic diagram showing an example of the operation of the guide guide plate and the auxiliary guide portion by the width adjusting mechanism when the size of the article B is changed Schematic diagram showing an example of the operation of the guide guide plate and the auxiliary guide portion by the width adjusting mechanism when the size of the article B is changed Explanatory drawing for demonstrating an example of the receiving part which concerns on this embodiment Explanatory drawing for explaining the receiving part used conventionally Schematic diagram illustrating an example of the optical axis of X-rays in the X-ray inspection unit Explanatory drawing for demonstrating the effect in an X-ray leakage prevention cover Schematic plan view showing an example of a schematic configuration of an X-ray inspection apparatus according to the second embodiment Schematic side view for explaining the outline of the X-ray inspection apparatus of FIG. Schematic diagram for explaining an example of attaching an X-ray inspection apparatus to a belt conveyor The schematic diagram which shows the operation example of a pair of guide guide member by the width adjustment mechanism when the magnitude | size of articles | goods is changed It is a schematic diagram which shows the operation example of a pair of guide guide member by the width adjustment mechanism when the magnitude | size of articles | goods is changed.

  Hereinafter, an X-ray inspection apparatus according to an embodiment of the present invention will be described with reference to the drawings.

(First embodiment)
FIG. 1 is a schematic plan view showing an example of a schematic configuration of an X-ray inspection apparatus 100 according to the first embodiment, and FIG. 2 is a schematic diagram for explaining an outline of the X-ray inspection apparatus 100 of FIG. FIG.

  As shown in FIGS. 1 and 2, the X-ray inspection apparatus 100 is attached to a belt conveyor 900. The X-ray inspection apparatus 100 mainly includes a receiving unit 600, an X-ray inspection unit 700, a delivery unit 800, and an X-ray leakage prevention cover 910.

  The receiving unit 600 includes a receiving table 611, a rotating shaft 612, a first motor 613, a guide guide plate 621, auxiliary guide units 622 and 623, a width adjusting mechanism 624, a support member 625, and a drive unit 626. The X-ray inspection unit 700 includes an X-ray source 200, a line sensor 400, a control unit 500, an inspection table 711, a rotating shaft 712, and a second motor 713. The delivery unit 800 includes a delivery table 811, a rotation shaft 812, a third motor 813, a guide guide plate 821, auxiliary guide units 822 and 823, a width adjustment mechanism 824, a support member 825, and a drive unit 826. Note that the reference numerals in parentheses in FIG. 2 are shown to show the relationship of the delivery unit 800 having the same configuration as the reception unit 600.

(Receiver)
A receiving table 611 having a horizontal surface is attached to the first motor 613 on one end side of the rotating shaft 612 provided vertically, and the other end side of the rotating shaft 612 is attached. In the receiving table 611 according to this embodiment, the top plate has a disc shape. Further, a drive unit 626 and a width adjusting mechanism 624 are provided on one end side of the support member 625, and a guide guide plate 621 and auxiliary guide units 622 and 623 are provided on the other end side of the support member 625.

(Inspection unit)
One end of the rotating shaft 712 provided vertically is attached to the second motor 713, and an inspection table 711 having a horizontal surface is attached to the other end of the rotating shaft 712. As for the inspection table 711 which concerns on this embodiment, a top plate consists only of a disk shape.
The inspection table 711 is made of a carbon material. Thereby, the inspection table 711 has an advantage that it easily transmits X-rays and does not affect the X-ray irradiation. In addition, since the rigidity is high and the weight is light compared to the metal, the article can be securely held, and the rotation stability of the inspection table 711 can be improved. In particular, since it is lightweight, eccentricity of the inspection table 711 can be prevented. Further, since the rigidity is high, an article whose weight has been increased can be included in the inspection object, and the capacity of the drive motor can be reduced to realize low cost and power saving.

  A control unit 500 is built in an X-ray leakage prevention cover 910 provided in the X-ray inspection unit 700. Further, an X-ray source 200 is provided above the inspection table 711. The X-ray source 200 is provided so as to intersect the transport direction of the belt conveyor 900 (in the direction of the arrow HL1 in FIG. 1) when viewed from above, and when viewed from the side, the belt conveyor 900. It is arrange | positioned so that it can irradiate diagonally downward toward the direction away from the direction close | similar to (direction of arrow-L1 of FIG. 9). The line sensor 400 is provided at a position where the X-rays irradiated from the X-ray source 200 can pass through the article B and receive the transmitted X-rays.

  The control unit 500 is provided so as to be able to transmit / receive to / from the X-ray source 200 and receive a signal from the line sensor 400. The control unit 500 is provided so as to be able to transmit and receive with the first motor 613, the second motor 713, the third motor 813, the drive unit 626, and the width adjustment mechanisms 624 and 824.

(Delivery department)
A third motor 813 is attached to one end side of the rotating shaft 812 provided vertically, and a delivery table 811 having a horizontal surface is attached to the other end side of the rotating shaft 812. As for the delivery table 811 which concerns on this embodiment, a top plate consists of disk shape. Further, a drive unit 826 and a width adjusting mechanism 824 are provided on one end side of the support member 825, and a guide guide plate 821 and auxiliary guide portions 822 and 823 are provided on the other end side of the support member 825.

  Next, an example of the operation of the X-ray inspection apparatus 100 shown in FIGS. 1 and 2 will be described.

  As shown in FIGS. 1 and 2, the article B conveyed on the belt conveyor 900 is moved to the receiving table 611 side by the guide guide plate 621 of the receiving unit 600. In this case, the article B passes between the guide guide plate 621 and the auxiliary guide portion 622 or the upper surface along the direction of the arrow HL2, and is placed on the receiving table 611.

  The article B placed on the receiving table 611 is transferred in the direction of the arrow HL3 when the receiving table 611 rotates in the direction of the arrow R1, and is delivered to the inspection table 711.

As the inspection table 711 rotates in the direction of the arrow -R1, the article B placed on the inspection table 711 moves along the direction of the arrow HL4 on the inspection table 711 and is irradiated from the X-ray source 200. Foreign matter inspection is performed by X-rays.
Here, centrifugal force is applied to the article B due to the rotation of the inspection table 711, and the foreign matter easily moves to the outer peripheral side or the inner peripheral side of the inspection table 711. This specific example will be described later.

Then, the article B for which the X-ray inspection is completed moves on the inspection table 711 along the direction of the arrow HL5. In this case, the article B passes between the guide guide plate 821 and the auxiliary guide portion 822 along the direction of the arrow HL6 and is placed on the delivery table 811.
The article B placed on the delivery table 811 is transferred in the direction of the arrow HL7 as the delivery table 811 rotates in the direction of the arrow R. In this case, the article B passes between the guide guide plate 821 and the auxiliary guide portion 823 and is returned onto the belt conveyor 900.

  Next, a state where the X-ray inspection apparatus 100 is attached to the belt conveyor 900 will be described. FIG. 3 is a schematic diagram for explaining an example in which the X-ray inspection apparatus 100 is attached to the belt conveyor 900.

  As shown in FIG. 3, the X-ray inspection apparatus 100 is inserted into the belt conveyor 900 from a direction perpendicular to the conveying direction of the belt conveyor 900 (the direction of the arrow L <b> 1 in the drawing). Thereby, as shown in FIG. 1, an X-ray inspection process can be easily added to the belt conveyor 900.

  In this case, a height adjustment mechanism that adjusts the height of the receiving table 611, the inspection table 711, the delivery table 811, the X-ray source 200, the line sensor 400, and the like of the X-ray inspection apparatus 100 with respect to the belt conveyor 900. (Not shown) is provided. The height adjustment mechanism adjusts the heights of the receiving table 611, the inspection table 711, the delivery table 811, the X-ray source 200, the line sensor 400, and the like so as to match the height of the belt conveyor 900. The line inspection apparatus 100 is inserted.

  Next, FIGS. 4 and 5 are schematic views showing an example of the operation of the guide guide plate 621 and the auxiliary guide portions 622 and 623 by the width adjusting mechanism 624 when the size of the article B is changed. FIG. FIG. 7 is an explanatory diagram for explaining an example of a receiving unit 600 according to the embodiment, and FIG. 7 is an explanatory diagram for explaining a receiving unit conventionally used.

As shown in FIG. 4, a can of drinking water is being transported as the article B, and as shown in FIG. 5, it has been changed to a canned fruit or the like (article C) larger than the can of drinking water (article B). In this case, the guide guide plate 621 is moved in the direction of the arrow T2 by the width adjusting mechanism 624, or the auxiliary guide portions 622 and 623 are moved in the direction of the arrow T1, or the guide guide plate 621 is moved in the direction of the arrow T2. While doing so, the auxiliary guide portions 622 and 623 are moved in the direction of the arrow T1. As described above, the distance between the guide guide plate 621 and the auxiliary guide portions 622 and 623 can be largely adjusted by the width adjusting mechanism 624.
Further, the guide guide plate 621 may be moved in the direction opposite to the arrow T1 or in the direction opposite to the arrow T2. Further, the auxiliary guide portions 622 and 623 may be moved. Therefore, the position of the guide guide plate 621 can be adjusted by the width adjusting mechanism 624, and the positions of the auxiliary guide portions 622 and 623 having surfaces can be adjusted.

  As described above, even when the size of the article is changed from the article B to the article C by the width adjusting mechanism 624, the X-ray inspection can be easily performed. 4 and 5, the receiving unit 600 has been described. In the delivery unit 800, the distance between the guide guide plate 821 and the auxiliary guide units 822 and 823 can be adjusted by the width adjusting mechanism 624.

  Further, as shown in FIG. 7, conventionally, when the article is changed from the article B to the article C, the holding member 991 having the notch and the vertical wall is held by the holding member 991 having the different notch and the vertical wall. As shown in FIG. 6, when the article is changed from the article B to the article C, the guide guide plate is supported while supporting the articles B and C on the surface 611F of the receiving table 611 as shown in FIG. By adjusting the 621 and the auxiliary guide portions 622 and 623 by the width adjusting mechanism 624, it is possible to easily cope with the article replacement.

  Conventionally, since the vertical wall shown in the holding member 991 is also provided in the inspection table, it takes time to replace the article. However, in this embodiment, the top surface of the inspection table 711 is a disk plane. 6 (similar to the surface 611F in FIG. 6), it is possible to easily deal with article replacement.

  Further, not only the width adjustment mechanism 624 but also an adjustment mechanism (not shown) for adjusting the angle of the optical axis of the X-ray source, a relative position adjustment for adjusting the relative positions of the receiving table 611, the inspection table 711, and the delivery table 811. A mechanism (not shown) may be provided.

Next, FIG. 8 is a schematic diagram for explaining an example of the optical axis of the X-ray in the X-ray inspection unit 700. FIG. 8 is an explanatory diagram after the article moves along the direction of the arrow HL5 after the article moves along the direction of the arrow HL4 in FIG.
That is, the X-ray source 200 is arranged so that the X-rays emitted from the X-ray source 200 form 90 degrees with the belt conveyor 900 and in a direction away from the cross belt conveyor 900.

  As shown in FIG. 8, the X-ray source 200 has a vertical direction so that the center of the optical axis irradiated from the X-ray source 200 passes through the points HT1 and HT2 of the article B arranged on the inspection table 711. From the angle θ1. Needless to say, the region range of the X-rays irradiated from the X-ray source 200 is arranged to include the entire range of the article B.

  Here, the article B arranged on the inspection table 711 is conveyed in a state where the centrifugal force CF1 is applied. Therefore, there is a high possibility that the foreign objects BU1 and BU2 move in the vicinity of the points HT1 and HT2 of the article B.

Specifically, when the article B is a beverage and there is a foreign substance inside the beverage, and the specific gravity of the foreign substance BU2 is heavier than that of the drink, the lower part of the article B on the outer peripheral side of the inspection table 711 in the article B In the case where the specific gravity of the foreign object BU1 is lighter than that of the beverage, it is easy to move to the upper part of the article B (near the point HT1) on the inner peripheral side of the inspection table 711 in the article B.
Therefore, in order to optimally detect the foreign objects BU1 and BU2, the angle θ1 is set so as to pass from the point HT1 to the point HT2.

  Next, FIG. 9 is an explanatory diagram for explaining the effect of the X-ray leakage prevention cover 910.

  As shown in FIG. 9, the X-ray leakage prevention cover 910 is provided so as to enclose the X-ray source 200 and the line sensor 400. As shown in FIG. 9, the X-ray source 200 is provided in a direction different from the direction of the belt conveyor 900, that is, in the direction of the arrow -L. Therefore, even when X-rays are emitted from the X-ray source 200 and the X-rays are irregularly reflected in the direction of the arrow X1, the direction of the arrow X2, and the direction of the arrow X3, most of the irregularly reflected X-rays are prevented downward or X-ray leakage. It can remain in the cover 910. As a result, it is possible to prevent leakage to the belt conveyor 900 side.

(Effect in the first embodiment)
As described above, in the X-ray inspection apparatus 100 according to the present embodiment, the X-ray leakage prevention cover 910 can be provided to prevent X-rays from leaking to the belt conveyor 900 side. The receiving unit 600 and the delivery unit 800 include a receiving table 611, a delivery table 811 and a guide guide plate 621, an auxiliary guide unit 622, 623, a guide guide plate 821, and an auxiliary guide unit 822, 823. The X-ray inspection apparatus 100 can be attached to the constructed transfer line, and an X-ray inspection process can be easily added. That is, the article B to be inspected is inspected from the existing conveyance line using the receiving table 611, the delivery table 811 and the guide guide plate 621, the auxiliary guide portions 622, 623, the guide guide plate 821, and the auxiliary guide portions 822, 823. An X-ray inspection line can be easily formed.

  Furthermore, in the present invention, since the surface 611F of the receiving table 611 and the delivery table 811 is only a flat surface, there is no need to replace the holding members 991 and 992 for delivery according to the article to be conveyed as in the prior art. Even when the shape of the article B is changed to the shape of the article C, the top surface of the receiving table 611 and the delivery table 811 reliably receives the articles B and C from the belt conveyor 900, or the X-ray inspection unit 700. The article can be delivered from the belt conveyor 900 to the belt conveyor 900.

  Further, in the X-ray inspection apparatus 100 according to the present embodiment, from the receiving unit 600 to the delivery unit 800 via the X-ray inspection unit 700, the article B is the article B, and the continuous curve in the directions of arrows HL1, to HL7. It will be conveyed along the circular arc trajectory comprised by this. Therefore, since the turning path cannot be bent, the article B can be stably conveyed. For example, when the conveyance path is constituted by a straight line, a bend is generated in the conveyance path. As a result, the posture of the article B at the time of conveyance becomes unstable at the corner of the conveyance path.

  On the other hand, when the article B is conveyed along the arcuate track, since the posture of the article B is not abruptly influenced, the article B can be conveyed smoothly and stably. A path for performing an X-ray inspection of the shortest distance can be formed.

  In the X-ray inspection apparatus 100, X-rays emitted from the X-ray source 200 are received by the line sensor 400. Therefore, the X-ray inspection of the article B can be reliably performed. In addition, since the X-ray source 200 is provided above the inspection table 711, the installation space of the X-ray inspection apparatus 100 can be reduced as compared with the case where X-rays are irradiated from the outside of the inspection table 711. Furthermore, since the X-ray source 200 emits X-rays in the direction away from the belt conveyor 900 (the direction of the arrow -L1), even if X-rays are emitted from the X-ray source 200 and diffusely reflected, X-rays can be prevented from leaking to the conveyor 900 side.

  Further, even when the size of the article B is changed, the width adjustment mechanisms 624 and 824 adjust the guide guide plate 621, the auxiliary guide portions 622 and 623, the guide guide plate 821, and the auxiliary guide portions 822 and 823. Thus, the X-ray inspection on the article B can be easily performed.

(Second Embodiment)
FIG. 10 is a schematic plan view showing an example of a schematic configuration of an X-ray inspection apparatus 100a according to the second embodiment, and FIG. 11 is a diagram for explaining an outline of the X-ray inspection apparatus 100a of FIG. It is a typical side view. Hereinafter, differences of the X-ray inspection apparatus 100a according to the second embodiment from the X-ray inspection apparatus 100 according to the first embodiment will be described.

  As shown in FIGS. 10 and 11, the X-ray inspection apparatus 100a includes a pair of guide guide members 634a and 635a and a pair of guide guide members in the receiving portion 600a instead of the guide guide plate 621 and the auxiliary guide portions 622 and 623. 634b and 635b.

  Further, the X-ray inspection apparatus 100a includes a pair of guide guide members 834a and 835a and a pair of guide guide members 834b and 835b in the delivery unit 800a instead of the guide guide plate 821 and the auxiliary guide portions 822 and 823.

  Also, as shown in FIG. 10, a defective product discharge member 790 and a defective product discharge section 930 are provided in the X-ray leakage prevention cover 910. When a defective product is detected in the inspection table 711, the defective product discharge member 790 rotates and discharges an article determined to be defective from the defective product discharge unit 930 to the outside.

  Here, the liquid level of the contents in the article B may be obtained. In this case, as described above, when the article B is a can of drinking water, the liquid level is shaken by the rotational conveyance. Therefore, the X-ray source 200 irradiates the X-ray XS in the oblique direction with respect to the liquid surface that is shaken by the rotational conveyance, and irradiates the X-ray XS in the oblique direction with respect to the liquid bottom surface that does not move. By irradiating X-ray XS in this way, an image acquisition unit (not shown) can acquire a liquid level image and a liquid bottom image in a state having a planar area on the X-ray transmission image. A center position detector (not shown) detects the center positions of the liquid level image and the liquid bottom image. Since the center position of the liquid level is difficult to change and the center position of the liquid bottom surface does not change, the height detection unit (not shown) calculates the difference of the height coordinates of each center position, thereby calculating the difference. Can be obtained as height.

  In this embodiment, as shown in FIG. 11, an X-ray leakage prevention cover 910 is provided so as to cover the conveying surface of the belt conveyor 900 from above the belt conveyor 900. The X-ray leakage prevention cover 910 is provided with a carry-in port 911 for carrying in the article B and a carry-out port 912 for carrying out the product B.

  Next, a state where the X-ray inspection apparatus 100a is attached to the belt conveyor 900 will be described. FIG. 12 is a schematic diagram for explaining an example in which the X-ray inspection apparatus 100a is attached to the belt conveyor 900.

  As shown in FIG. 12, the X-ray inspection apparatus 100a is inserted into the belt conveyor 900 from a direction perpendicular to the conveying direction of the belt conveyor 900 (the direction of the arrow L1 in the figure). Thereby, as shown in FIG. 10, an X-ray inspection process can be easily added to the belt conveyor 900.

  In this case, a height adjustment mechanism that adjusts the height of the receiving table 611, the inspection table 711, the delivery table 811, the X-ray source 200, the line sensor 400, and the like of the X-ray inspection apparatus 100a with respect to the belt conveyor 900. (Not shown) is provided. The height adjustment mechanism adjusts the heights of the receiving table 611, the inspection table 711, the delivery table 811, the X-ray source 200, the line sensor 400, and the like so as to match the height of the belt conveyor 900. The line inspection apparatus 100a is inserted.

  FIG. 13 and FIG. 14 are schematic diagrams illustrating an operation example of the pair of guide guide members 634a, 635a, 634b, and 635b by the width adjusting mechanism 624 when the size of the article B is changed. FIG. 13 is a top view and FIG. 14 is a perspective view.

  When the size of the article is changed from the article B to the article C, the guide guide members 635a and 635b in FIGS. 13 (a) and 14 (a) are shown in FIGS. 13 (b) and 14 (b). In this manner, the width adjusting mechanism 624 is moved in the directions of arrows T1 and T3, respectively. Further, the guide guide members 634a and 634b shown in FIGS. 13A and 14A are moved in the directions of arrows T2 and T4 by the width adjusting mechanism 624 as shown in FIGS. 13B and 14B, respectively. Moved. In addition, since the arrow T1 and the arrow T3 are not parallel, interference between the guide guide member 635a and the guide guide member 635b is prevented at the time of movement, and the arrow T2 and the arrow T4 are not parallel at the time of movement. Interference between the guide guide member 634a and the guide guide member 634b is prevented. Further, not only the guide guide members 634a, 634b, 635a, 635b but also the guide guide members 834a, 834b, 835a, 835b are similarly moved by the width adjusting mechanism 824.

(Effect in 2nd Embodiment)
As described above, in the X-ray inspection apparatus 100a, the pair of guide guide members 634a and 635a, the pair of guide guide members 634b and 635b, the pair of guide guide members 834a and 835a, and the pair of guide guide members 834b and 835b are formed from the curved members. Thus, each pair forms a transport path having a constant width, so that the article B can be transported stably. Even if the rotation speed of the receiving table 611 or the delivery table 811 changes suddenly due to a failure or the like, the guide guide members 634a, 635a, 634b, and 635b and the guide guide members 834a, 835a, 834b, and 835b serve as a fall prevention wall. Fulfill. Thereby, the article B is prevented from dropping from the receiving table 611 or the delivery table 811.

  Further, in the X-ray inspection apparatus 100a according to the present embodiment, the X-ray leakage prevention cover 910 can be provided to prevent the X-ray XS from leaking to the belt conveyor 900 side.

  In addition, since the receiving unit 600a and the delivery unit 800a have simple configurations, the X-ray inspection apparatus 100a can be attached to the already constructed transfer line at a low cost, and an X-ray inspection process can be easily added. That is, an X-ray inspection line for inspecting the article B from an existing conveyance line can be easily formed.

  In addition, since the receiving table 611 and the delivery table 811 are only flat, it is not necessary to replace the delivery holding members 991 and 992 according to the article to be conveyed as in the prior art. Thereby, even when the shape of the article B is changed to the shape of the article C, the surface 611F of the receiving table 611 and the top surface of the delivery table 811 reliably receive the articles B and C from the belt conveyor 900, Articles B and C can be delivered from the line inspection unit 700 to the belt conveyor 900.

  Further, in the X-ray inspection apparatus 100a according to the present embodiment, the article B is composed of continuous curves in the directions of arrows HL1, to HL7 from the receiving unit 600a to the delivery unit 800a through the X-ray inspection unit 700. It will be conveyed along the circular arc trajectory. Therefore, since the turning path cannot be bent, the article B can be stably conveyed. For example, when the conveyance path is constituted by a straight line, a bend is generated in the conveyance path. As a result, the posture of the article B at the time of conveyance becomes unstable at the corner of the conveyance path.

  On the other hand, when the article B is conveyed along the arcuate track, since the posture of the article B is not abruptly influenced, the article B can be conveyed smoothly and stably. A path for performing an X-ray inspection of the shortest distance can be formed.

  In the X-ray inspection apparatus 100 a according to the present embodiment, the X-ray XS irradiated from the X-ray source 200 is received by the line sensor 400. Therefore, the X-ray inspection of the article B can be reliably performed. In addition, since the X-ray source 200 is provided above the inspection table 711, the installation space for the X-ray inspection apparatus 100a can be reduced as compared with the case of irradiating the X-ray XS from the outside of the inspection table 711. Furthermore, since the X-ray source 200 emits the X-ray XS toward the direction away from the belt conveyor 900 (the direction of the arrow -L1), the X-ray source 200 is irradiated with the X-ray XS and diffusely reflected. Also, the X-ray XS can be prevented from leaking to the belt conveyor 900 side.

  Further, even when the article B is changed to the article C, the guide guide members 634a, 635a, 634b, 635b and the guide guide members 834a, 835a, 834b, 835b are moved by the width adjusting mechanisms 624, 824. The conveyance of the article C and the X-ray inspection can be easily performed.

(Correspondence between each component of claims and each part of the embodiment)
In the above embodiment, the articles B and C correspond to articles, the belt conveyor 900 corresponds to a transport line, the X-ray inspection apparatus 100 corresponds to an X-ray inspection apparatus, the receiving unit 600 corresponds to a receiving unit, The X-ray inspection unit 700 corresponds to the X-ray inspection unit, the X-ray leakage prevention cover 910 corresponds to the X-ray leakage prevention cover, the delivery unit 800 corresponds to the delivery unit, the receiving table 611, the delivery table 811 is the rotary table. The guide guide plate 621, the auxiliary guide portions 622, 623, the guide guide plate 821, and the auxiliary guide portions 822, 823 correspond to the guide guide, the inspection table 711 corresponds to the transfer table, and the X-ray source 200 corresponds to the X-ray source 200. It corresponds to the radiation source, the line sensor 400 corresponds to the detection device, the direction passing through the points HT1 and HT2 corresponds to the direction from the upper side to the lower side, and the direction of the arrow -L1 is carried. It corresponds to the direction away from the line, the width adjusting mechanism 624, 824 corresponds to the adjusting unit, the X-ray XS corresponds to the X-ray, the pair of guide guide members 634a, 635a, the pair of guide guide members 634b, 635b, the pair The guide guide members 834a and 835a and the pair of guide guide members 834b and 835b correspond to a pair of bending members.

(Modification)
The guide guide plates 621 and 821 and the auxiliary guide portions 622, 623, 822, and 823 are provided. However, the present invention is not limited to this, and a belt that actively moves the article B is provided on the guide guide plates 621 and 821. May be.

  In this embodiment, the case where the X-ray leakage prevention cover 910 made only of a curved surface is provided has been described. However, the present invention is not limited to this. A wire leakage prevention cover may be used.

  In the above embodiment, the pair of guide guide members 635a and 635b and the pair of guide guide members 634a and 634b are moved in parallel. However, the present invention is not limited to this, and at least one of the pair of guide guide members 635a and 635b is used. May perform a rotation operation, a rotation operation, and a slide operation, and at least one of the pair of guide guide members 634a and 634b may perform a rotation operation, a rotation operation, and a slide operation.

  Further, the guide guide member 634a and the guide guide member 634b are integrated, the guide guide member 635a and the guide guide member 635b are integrated, and the guide guide member 834a and the guide guide member 834b are integrated, and the guide guide member 835a. And the guide guide member 835b may be integrated.

  Furthermore, although one preferable embodiment of the present invention is as described above, the present invention is not limited thereto. It will be understood that various other embodiments may be made without departing from the spirit and scope of the invention. Furthermore, in this embodiment, although the effect | action and effect by the structure of this invention are described, these effect | actions and effects are examples and do not limit this invention.

100, 100a X-ray inspection apparatus 200 X-ray source 400 Line sensor 500 Control unit 600, 600a Receiving unit 611 Receiving table 612 Rotating shaft 613 First motor 621 Guide guide plate 622, 623 Auxiliary guide unit 624 Width adjusting mechanism 625 Support member 626 Drive unit 634a, 635a, 634b, 635b Guide guide member 700 Inspection unit 711 Inspection table 712 Rotating shaft 713 Second motor 800, 800a Delivery unit 811 Rotating table 812 Rotating shaft 813 Third motor 821 Guide guide plate 822, 823 Auxiliary guide unit 824 Width adjustment mechanism 825 Support member 826 Drive unit 834a, 835a, 834b, 835b Guide guide member 900 Belt conveyor 910 X-ray leakage prevention cover 991 Table 992 Holding member XS X-ray

Claims (7)

An X-ray inspection apparatus provided in a transport line for transporting articles,
A receiving unit for receiving the article from the conveying line;
An X-ray inspection unit for inspecting a foreign substance of an article received from the receiving unit;
An X-ray leakage prevention cover for preventing X-ray leakage in the X-ray inspection unit;
A delivery unit that delivers the article inspected in the X-ray inspection unit to a conveyance line;
X-rays characterized in that the receiving section and the delivery section include a rotary table for carrying the article, and a guide guide for assisting the movement of the article, in which the article placement section is only a flat surface. Inspection device. The X-ray inspection unit has a transport table for transporting the article in an arc shape, and the placement unit for the article is only a flat surface.
2. The X-ray inspection according to claim 1, wherein the guides of the receiving unit and the delivery unit are arranged so that the article is conveyed in an arc orbit between the conveyance line and the conveyance table. apparatus. The X-ray inspection unit includes an X-ray source and a detection device that receives X-rays emitted from the X-ray source,
The X-ray source is provided above the transfer table, and X-rays irradiated from the X-ray source are irradiated from above to obliquely downward with respect to an article conveyed in an arc shape by the transfer table. Provided to be
The X-ray inspection apparatus according to claim 2, wherein the detection device is provided at a position for receiving the irradiated X-ray.   The X-ray inspection apparatus according to claim 3, wherein the X-ray source emits X-rays in a direction away from the transport line.   The X-ray inspection apparatus according to claim 1, wherein the guide guide includes a pair of curved members.   The X-ray inspection apparatus according to claim 1, wherein the guide for the receiving unit and the delivery unit includes an adjusting unit that adjusts according to the shape of the article.   The X-ray inspection apparatus according to claim 1, wherein the transfer table is made of carbon.