JP2001311700A - X-ray detection unit and x-ray foreign matter detector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an X-ray detection unit in which respective constitutions are assembled independently and whose maintenance is made easy. SOLUTION: An X-ray generation part is installed in the upper part of an enclosure. A metal box 6 which comprises a slit 7 extended in the transverse direction on the upper face 6a so as to pass X-rays from the X-ray generation part is attached to the lower part of the enclosure. An X-ray detection part 2 which detects the X-rays is housed inside the metal box 6. A front-part roller support part 11 and a rear-part roller support part 12 are attached to the front and the rear in the longitudinal direction of the metal box 6. Front-part rollers 8a, 8b are freely detachable at the support part 11, and area-part rollers 8c, 8d are freely detachable at the support part 12. When an object to be inspected is placed, a conveyer belt 10 which is supported by the upper face 6a of the metal box 6 is stretched on the respective rollers 8a, 8b, 8c, 8d so as to surround the metal box 6 in the longitudinal direction. The X-ray detection unit is formed in such a way that the constitution of a conveyance system used to convey the object to the inspected is attached to the metal box 6 which houses the detection part 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for detecting a foreign substance in a test object by transferring the test object by a transfer unit while receiving the X-rays from the X-ray generating unit in the X-ray detection unit. X-ray detection unit provided with both an X-ray detection unit and a transport unit, and an X-ray using the X-ray detection unit
The present invention relates to a foreign matter detection device.

[0002]

2. Description of the Related Art Conventionally, an X-ray foreign substance detecting apparatus has been used to detect foreign substances (metal, bone, glass, stone, synthetic resin material, etc.) contained in an inspection object such as raw meat or processed food. ing. In this type of X-ray foreign matter detection device, an X-ray generation unit is attached to an apparatus main body, and the X-ray detection unit is attached to a position below the X-ray generation unit in the apparatus main body. Thus, the X-rays emitted from the X-ray generation unit are received by the X-ray detection unit. In addition, the apparatus main body is provided with a transport unit for passing the inspection object between the X-rays irradiated as described above. The transport section has rollers arranged at positions before and after in the transport direction in the apparatus main body, and a belt is looped between the rollers. One of the rollers is driven by a driving device such as a motor attached to the apparatus main body. The belt is circulated by driving the rollers.
In the circulating belt, a support plate for supporting an inspection object conveyed on the belt is arranged. The X-ray detector is disposed below the belt (in the circulating belt), and the belt is placed between the X-ray generator and the X-ray detector. As a result, the X-ray foreign matter detection device irradiates the inspection object transported on the belt with X-rays, and receives the transmitted X-ray transmitted through the inspection object by the X-ray detection unit, thereby detecting the inspection object. Detects foreign matter contained in it.

[0003]

However, in the above-described conventional X-ray foreign matter detection device, the X-ray generation unit, the X-ray detection unit, and the transport unit are attached to the main body of the device. In particular, X
The line detector and the transporter are in close proximity to each other to detect a foreign substance contained in the transported inspection object. Therefore, X
An X part is attached to the part of the device main body to which the line
Along with the line detection unit, rollers, belts, support plates, driving machines (motors), and the like, which are components of the conveyance unit, are mixed.
As described above, when components having different functions coexist, assembly is complicated, and there is a problem that maintenance such as inspection, repair, and cleaning of each part is troublesome.

[0004] In particular, with regard to cleaning, there is a case where food is inspected as an object to be inspected in the transport section, so that attention is required in hygiene. However, since the components of the X-ray detection unit and the transport unit are mixed as described above, there is a problem that there are many gaps and joints where various germs easily occur between the components. When cleaning the gaps and joints, each component is disassembled. However, since the components of the X-ray detection unit and the transport unit are mixed, the work can be easily performed. Can not.

In a conventional X-ray foreign matter detection device, an X-ray generation unit, an X-ray detection unit, and a transport unit are mounted on a main body of the device. For this reason, there is a problem that assembling cannot be performed without the apparatus main body, and the assembling process becomes one line, which increases the manufacturing cost.

Accordingly, the present invention provides an X-ray detection unit and an X-ray foreign matter detection device which can make the assembly of each component independent and facilitate maintenance in order to solve the above-mentioned problems. It is intended to be.

[0007]

To achieve the above object, an X-ray detection unit according to the present invention comprises a metal box having a slit extending in a lateral direction on an upper surface for passing X-rays.
An X-ray detecting unit 2 disposed in the metal box 6; a front roller supporting unit 11 and a rear roller extending forward and backward in the longitudinal direction of the metal box 6 and attached to the metal box 6. A support portion 12, a front roller 8 (8a, 8b) detachably provided on the front roller support portion 11, and a rear roller 8 (8c, 8d) detachably provided on the rear roller support portion 12. ), A transport belt that is vertically wrapped around the metal box 6 and wrapped around the front roller 8 and the rear roller 8 and is supported by the upper surface 6a of the metal box 6 when an object to be inspected is placed. 10 is provided.

An X-ray foreign matter detection apparatus according to the present invention includes an X-ray generation unit 1 and a metal box 6 having a slit 7 extending laterally on an upper surface 6a for passing X-rays from the X-ray generation unit 1. ,
An X-ray detection unit 2 disposed in the metal box 6; a front roller support unit 11 and a rear roller support unit extending in front and rear in the longitudinal direction of the metal box 6 and attached to the metal box 6. 12, a front roller 8 (8a, 8b) removably provided on the front roller support 11, and a rear roller 8 removably provided on the rear roller support 12.
(8c, 8d), the metal box 6 is vertically wrapped around the front roller 8 and the rear roller 8 surrounding the metal box 6,
When the object to be inspected is placed, the upper surface 6 of the metal box 6
and a transport belt 10 supported by a.

[0009]

Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 is a perspective view showing an example of the X-ray foreign matter detecting device of the present invention, FIG. 2 is a perspective view showing an example of the X-ray detecting unit of the present invention, and FIG. 3 is an exploded perspective view of the X-ray detecting unit.

[0010] As shown in FIG.
X-ray generation unit 1 that mainly generates X-rays, X-ray detection unit 2 that receives X-rays from X-ray generation unit 1, and X-ray generation unit 1
A transport unit 3 for transporting an inspection object (not shown) between the line detection units 2;

An X-ray generator 1 includes an X-ray tube 4 for generating X-rays.
Is covered with a shielding plate to prevent leakage of X-rays. The shielding plate is formed by internally applying a shielding material such as lead. The X-ray generation unit 1 is disposed on an upper portion of a housing 5 that forms a main body of the X-ray foreign matter detection device, and emits X-rays downward. The X-rays are emitted in a substantially conical shape spreading downward from the X-ray tube 4, and thereafter, a long hole formed at the bottom of the X-ray generation unit 1 and the housing 5 supporting the X-ray generation unit 1 are provided. Through a long hole provided in the bottom plate, as shown by a chain line in FIG. In the X-ray generation unit 1, heat generated when X-rays are generated is radiated by cooling fins (not shown).

The X-ray detector 2 is arranged below the housing 5 which is the main body of the X-ray foreign matter detector, and is configured to receive the X-rays emitted from the X-ray generator 1. This X
The line detector 2 is housed in a metal box 6. Metal box 6
Has a slit 7 on the upper surface 6a formed substantially flat. The slit 7 is formed by attaching a resin material that transmits X-rays to a long hole formed in a sheet metal on the upper surface 6a so as to extend in the lateral direction, the resin material being waterproof with a silicon material or the like. The slit 7 allows a planar X-ray emitted from the X-ray generator 1 to pass therethrough. That is, the lateral direction in which the slit 7 is formed is a direction through which a planar X-ray can pass. X-rays that have passed through the slits 7 of the metal box 6 are received by the X-ray detection unit 2 arranged in the metal box 6. The X-ray detector 2 converts the X-rays into light and outputs the light to an X-ray processor (not shown).

The metal box 6 has its lateral side fixed to the housing 5 which forms the main body of the X-ray foreign matter detector. In the present embodiment, the metal box 6 is fixed by welding.
Other than welding, bolting or the like may be used. Further, the metal box 6 may be placed on a plane with the legs 34 attached thereto as described later.

The transport unit 3 passes the inspection object through planar X-rays emitted from the X-ray generation unit 1 to the X-ray detection unit 2. As shown in FIG. 1, the transport unit 3 mainly includes
It comprises a roller 8, a motor unit 9, and a transport belt 10. Further, as shown in FIGS. 2 and 3, the roller 8 and the transport belt 10 that constitute the transport unit 3 include the X-ray detection unit 2.
Is attached to the metal box 6 in which is stored.

As shown in FIG. 2, a slit 7 is provided on the upper surface 6a of the metal box 6 in a horizontal direction, and a direction perpendicular to the slit 7 is a vertical direction, and the metal boxes 6 located before and after the vertical direction. A front roller supporting portion 11 and a rear roller supporting portion 12 are provided on the front surface 6b and the rear surface 6c.

As shown in FIG. 3, the front roller supporting portion 11 includes a fixing plate 11a, a pair of supporting members 11b and 11c which are bent at both sides of the fixing plate 11a and extend in parallel with each other.
It is composed of a supporting plate 11d which also bends and extends above the fixing plate 11a. Further, the front roller support 1
1 includes a side plate 13 having a different configuration from the fixing plate 11a, the support members 11b and 11c, and the support plate 11d.

The fixing plate 11a is provided with a plurality (four) of Dharma-shaped holes 15 having a continuous small diameter and large diameter. On the other hand, the front surface 6b of the metal box 6 is provided with a collar that engages with the small diameter of the Dharma-shaped hole 15 of the fixing plate 11a, and a locking portion 16 that includes a bolt and a washer that is inserted into the large diameter. . In other words, the fixing plate 11a engages with the locking portion 1
6 is hooked on the front surface 6b of the metal box 6 by passing through the bolt and washer 6 and engaging with the collar of the locking portion 16. Thereby, the support members 11b and 11c and the support plate 11d that constitute the front roller support portion 11 are
It is detachably installed on the front surface 6b of the metal box 6.

The side plate 13 is, as shown in FIG.
And the support member 11c. The side plate 13 is provided with a plurality (two) of Dharma-shaped holes 15 having a continuous small diameter and large diameter. On the other hand, on the side surface 6d of the metal box 6 and on the support member 11c, a locking portion 16 composed of a collar that engages with the small diameter of each Dharma-shaped hole 15 of the side plate 13 and a bolt and washer that penetrates the large diameter. Is provided. That is, the side plate 13 allows the darma-shaped hole 15 to pass through the bolt and the washer of the locking portion 16 and the locking portion 16
6d, the side surface 6d of the metal box 6
And the support member 11c.

The side plate 13 has a side surface 6 d of the metal box 6.
Is provided with a fixture 18, such as a catch clip, which engages with a hook 17 provided on the base. When the side plate 13 is installed on the side surface 6d of the metal box 6 and the support member 11c,
The hook 17 is exposed from an opening 19 in the side plate 13.
The fixing tool 18 is engaged with the exposed hook 17. By engaging the fixture 18 with the hook 17,
The side plate 13 slides so that the small diameter of the Dharma-shaped hole 15 engages with the collar of the locking portion 16. Also, by removing the fixture 18 from the engagement of the hook 17 and removing the Dharma-shaped hole 15 from the bolt and the washer of the locking portion 16, it is possible to easily remove it from the side surface 6 d of the metal box 6. Thereby, the side plate 13 constituting the front roller support portion 11 is formed.
Are detachably mounted on the side surface 6d of the metal box 6 and the support member 11c so as to extend from the front surface 6b of the metal box 6 in parallel with the support member 11b.

As shown in FIG. 3, the rear roller supporting portion 12 includes a fixing plate 12a, a pair of supporting members 12b and 12c which are bent at both sides of the fixing plate 12a and extend in parallel with each other.
It is composed of a support plate 12d which also bends and extends above the fixed plate 12a.

The fixing plate 12a is provided with a plurality (four) of dalma-shaped holes 15 having a continuous small diameter and large diameter. On the other hand, the rear surface 6c of the metal box 6 is provided with a collar that engages with the small diameter of the Dharma-shaped hole 15 of the fixing plate 12a, and a locking portion 16 that includes a bolt and a washer that is inserted into the large diameter. . In other words, the fixing plate 12a engages the locking portion 1
6 by being passed through the bolt and washer 6 and engaging the collar of the locking portion 16, the metal box 6 is hooked on the rear surface 6 c. Thereby, the rear roller support portion 12
However, the support members 12 b and 12 c are detachably installed on the rear surface 6 c of the metal box 6 so as to extend from the rear surface 6 c of the metal box 6.

The support plates 11d and 12d provided on the front roller support 11 and the rear roller support 12 are
When the front roller support 11 and the rear roller support 12 are fixed to the metal box 6, they are flush with the upper surface 6 a of the metal box 6.

The roller 8 is supported by the front roller support 11 and the rear roller support 12 fixed to the metal box 6 as described above. As shown in FIGS. 2 and 3, the roller 8 is
A total of four rollers are provided, of which three rollers 8a, 8b, 8c form a driven roller, and the remaining one roller 8d forms a driving roller. Rollers 8a, 8b, 8c as driven rollers
Is rotatable around a roller shaft 20 protruding at both ends via a built-in bearing (not shown). The roller 8d serving as a driving roller is rotatable by rotating shafts 21 protruding from both ends thereof being supported by bearings 22 each containing a bearing (not shown). Each bearing portion 22 is fixed to a fixed shaft 23 by screws. The one bearing portion 22 forms a cylindrical connecting portion 24 that exposes the end of the rotating shaft 21. One end of a male / female coupling 25 that is connected to an output shaft side of the motor unit 9 described below is fixed to an end of the exposed rotating shaft 21.

The roller 8a (driven roller) and the roller 8b (driven roller) of the roller 8 constitute a front roller, and the support member 11b of the front roller support 11 and the side plate 1
3 and supported. A notch 26 is formed at the upper edge of the support member 11 b and the side plate 13. Roller 8a
Is supported between the support member 11b and the side plate 13 by inserting the roller shaft 20 through the notch 26. Also,
A notch 27 is formed in the lower edge of the support member 11b and the side plate 13.
Are formed. The roller 8b is connected to the support member 11b and the side plate 1 by inserting the roller shaft 20 through the notch 27.
3 and supported.

The roller 8a and the roller 8b
The roller shaft 20 can be easily removed by removing the roller shaft 20 from 6, 27. Thus, the rollers 8a, 8b
Is detachable from the front roller support 11.

Further, among the rollers 8, the roller 8c
(The driven roller) and the roller 8d (the driving roller) constitute a rear roller, and the supporting member 12b of the rear roller supporting portion 12
And the supporting member 12c. Support member 12
A cutout portion 28 is formed on the lower edge of b, 12c. The roller 8c is supported between the support member 12b and the support member 12c by inserting the roller shaft 20 through the cutout 28.

The roller 8c extends from the notch 28 to the roller shaft 2
It can be easily removed by removing 0.
In this manner, the roller 8c is detachable from the rear roller support portion 12.

On the upper edges of the support members 12b and 12c, a support portion 29 for supporting the bearing portion 22 of the roller 8d (drive roller) and the end of the fixed shaft 23 is formed. The support portion 29 may be formed so that both end portions of each bearing portion 22 and the fixed shaft 23 are placed, but at least the fixed shaft 23 on the opposite side of the connecting portion 24 in the support member 12c.
May be formed as a support concave portion 29a for positioning and mounting one end of the support recess 29a. Further, the support member 12c is provided with a fixture 30 such as a catch clip for locking and fixing one end of the fixed shaft 23 placed on the support recess 29a. The roller 8d is connected to one end of the fixed shaft 23 by the support recess 2.
9a, and the same end is fixed to the fixture 30, so that the support members 12b and 12c are fixed.
Supported between.

The roller 8d is fixed to the fixed shaft 2 by the fixture 30.
3 and release the end of the rotating shaft 21 to the motor unit 9.
Can be easily removed by disconnecting it from the output shaft side. In this way, the roller 8d is detachable from the rear roller support portion 12.

Each of the rollers 8 (8a, 8a) supported by the front roller support 11 and the rear roller support 12 as described above.
b, 8c, 8d) are supported in a parallel relationship. In the rollers 8a and 8b (front rollers) supported by the front roller support portion 11, the upper roller 8a is located on the front side, and the lower roller 8b is located on the rear side. The rollers 8c and 8d (rear rollers) supported by the rear roller support portion 12 are rollers 8d on the upper side.
Are located on the rear side, and the lower roller 8c is located on the front side. Further, the upper peripheral surfaces of the upper rollers 8a and 8d are connected to the upper surface 6a of the metal box 6 and the front roller support portion 11a.
And a support plate 11d provided on the rear roller support portion 12,
It is located on the same plane as 12d.

The motor unit 9 is fixed to the housing 5 which forms the main body of the X-ray foreign matter detector. The motor unit 9 includes a drive motor and a speed reducer. FIG.
As shown in (1), on the output shaft side of the motor unit 9, there is provided a connecting portion 31 which is connected to the connecting portion 24 of the roller 8d serving as a driving roller to position the rotating shaft 21 and the output shaft at the same coaxial position. . Also, the output shaft of the motor unit 9 includes
The other end of the male and female coupling 25 that is connected to the end of the roller 8d rotating shaft 21 is fixed.

Then, by connecting the connecting portion 24 of the roller 8d and the connecting portion 31 of the motor unit 9, the rotating shaft 21 of the roller 8d and the output shaft of the motor unit 9 are in the same coaxial position. The coupling 25 is connected. Thus, the rotation of the output shaft of the motor unit 9 is transmitted to the rotating shaft 21.

In addition, the connection between the connecting portion 24 of the roller 8d and the connecting portion 31 of the motor unit 9 not only makes the rotating shaft 21 and the output shaft coaxial, but also positions the roller 8d. That is, the roller 8d has one end of a fixed shaft 23 for fixing the bearing portion 22 positioned and fixed on the supporting member 12c side of the rear roller supporting portion 12, and connecting the motor unit 9 with the connecting portion 24 on the opposite side. The connection with the portion 31 allows the positioning and support between the support members 12b and 12c.

The motor unit 9 is fixed to the housing 5 which is the main body of the X-ray foreign matter detection device, and the support member 1
2 b or the metal box 6.

The transport belt 10 is an endless belt.
As shown in FIG. 2, each of the rollers 8a and 8a surrounds the metal box 6 in the vertical direction (the direction orthogonal to the horizontal direction of the slit 7).
b, 8c, 8d. Conveyor belt 10
When the side plate 13 of the front roller supporting portion 11 is attached to the metal box 6, the roller 18a is stretched between the rollers 8a, 8b, 8c, and 8d by a slide in which the fixture 18 is engaged with the hook 17. The support member 11b supporting the roller 8b and the notch 27 of the side plate 13 are provided with a tension adjusting mechanism (not shown) for moving the roller 8b along the notch 27. It is possible to adjust the tension. Thus, each roller 8a, 8
The conveyor belt 10 stretched between b, 8c and 8d is supported by the upper surface 6a of the metal box 6 and the supporting plates 11d and 12d flush with the upper surface 6a. Further, each roller 8a, 8
The width of the conveyor belt 10 stretched between b, 8c and 8d is substantially the same as or larger than the lateral length of the slit 7 of the metal box 6.

The conveyor belt 10 can be disengaged from each of the rollers 8 only by disengaging the hooks 17 from the fixtures 18 on the side plate 13.
Since the tension between a, 8b, 8c and 8d is loosened, it can be easily removed. Thus, the transport belt 10
Is detachable from the rollers 8.

As shown in FIG. 1, the structure of the metal box 6 for accommodating the X-ray detection unit 2 and the transporting unit 3 attached to the metal box 6 includes front and rear arrangements at the lower part of the housing 5 and It is covered by a front cover 32 so as to prevent leakage of X-rays. Further, the cover 32 has an opening 33 that opens over the rollers 8a and 8d and over the rollers 8a and 8d and allows the inspection object to pass therethrough.
Are formed.

In the transport unit 3 having the above-described configuration, the rollers 8d rotate by the driving of the motor unit 9, and the rollers 8a, 8a,
The conveyor belt 10 stretched between 8b, 8c and 8d is circulated in one direction. The circulation of the conveyor belt 10 is in a vertical direction (front-rear direction) orthogonal to the slit 7 of the metal box 6 that receives the X-rays emitted from the X-ray generator 1 in a planar manner. Further, the transport belt 10 includes an upper surface 6a of the metal box 6 and support plates 11d,
Circulates along 12d. Thereby, the transport belt 10
The object to be inspected sent above is passed between planar X-rays from the X-ray generator 1 to the X-ray detector 2 with the upper surface 6a of the metal box 6 and the support plates 11d and 12d as support surfaces. I do.

As described above, the configuration of the transport unit 3 is integrated with the metal box 6 that houses the X-ray detector 2 that detects X-rays. The integrated X-ray detection unit 2 and transport unit 3 constitute an X-ray detection unit that transports the inspection object and detects X-rays transmitted through the inspection object.

Therefore, in the X-ray foreign matter detecting device configured as described above, the X-ray detecting unit 2 is housed in the metal box 6, and the configuration of the transport unit 3 is detachably attached to the metal box 6. . Thus, the X-ray detection unit 2 and the transport unit 3 which are in close proximity to each other to detect a foreign substance contained in the transported inspection object are independently assembled so as to be detachable via the metal box 6. Maintenance such as inspection, repair, and cleaning of each part can be facilitated.

Since the metal box 6 has a waterproof structure over the entire circumference and is configured to receive the X-rays passing through the slits 7 at the X-ray detection unit 2, moisture leaked from the inspection object during transportation. And the like can be shielded from the X-ray detection unit 2 and the stain can be washed with water.

The metal box 6 uses the flat upper surface 6a as a support surface for supporting the transport belt 10 on which the object to be inspected is placed. It is possible to reduce the gaps and joints where cracks are likely to occur. The roller 8 and the front roller support 1
1. The rear roller supporting portion 12 is detachable, and if it is removed, there is no gap or seam, and only the outer periphery of the metal box 6 is exposed. Therefore, cleaning is easy and hygiene can be improved. Becomes

Since the X-ray detecting unit 2 and the transporting unit 3 are formed as an integrated X-ray detecting unit, the X-ray detecting unit and the X-ray generating unit 1 are manufactured on different manufacturing lines. Therefore, the productivity can be improved, and the manufacturing cost can be reduced.

Since this X-ray detection unit has a function of transporting an object to be inspected by itself and detecting X-rays transmitted through the object to be inspected, only one determined X-ray foreign matter detecting device is provided. Instead, it can be variously used for a configuration including the X-ray generation unit 1. In particular, regarding the attachment and placement of the X-ray detection unit, the metal box 6 is attached to a necessary part, and as shown in FIG. Is not limited to one. As shown in FIG. 4, when the legs 34 are provided on the metal box 6, it is desirable to fix the motor unit 9 to the support member 12 b or the metal box 6. Alternatively, the motor unit 9 can be provided inside the metal box 6.

In the embodiment described above, the front roller is constituted by the rollers 8a and 8b, and the rear roller is constituted by the rollers 8c and 8d. The present invention is not limited to this configuration, and the front roller and the rear roller may be configured as a pair, one each in front and behind, one being a driving roller, and the other being a driven roller.

[0046]

As described above, in the X-ray detecting unit according to the present invention, the X-ray detecting section is accommodated and mounted in the metal box, and the conveying belt and the conveying belt are wound around the metal box. The part roller and the rear roller are detachable and integrated. As described above, since the configuration of the X-ray detection unit and the transport system are formed as an integrated unit, a function of transporting the inspection object by itself and detecting the X-ray transmitted through the inspection object is provided. The present invention can be used not only for one determined X-ray foreign matter detection device but also for various configurations for generating X-rays.

Further, since the transport system (the front roller and the rear roller) is detachably attached to the metal box, a close relationship is established for detecting foreign matter contained in the transported inspection object. Since a certain X-ray detecting unit and a transporting unit are independently assembled via a metal box, maintenance such as inspection, repair, and cleaning of each unit can be facilitated.

Since the metal box supports the transport belt on which the object to be inspected is mounted on its upper surface, the structure is simplified without requiring a separate support plate or the like, and the gap is easy to generate germs. And seams can be reduced. In addition, if the front roller, the rear roller, the conveyor belt, and the like are removed, the outer periphery of the metal box is exposed without any gaps or seams, so that cleaning is easy and sanitary improvement can be achieved.

In the X-ray foreign matter detection apparatus according to the present invention, the X-ray detection unit is accommodated and placed in a metal box, and a transport belt and front and rear rollers around which the transport belt is looped are mounted on the metal box. It is detachable and integrated. Accordingly, the effect of the X-ray detection unit described above can be obtained, and the X-ray detection unit and the X-ray generation unit that generates X-rays can be manufactured on different manufacturing lines, so that productivity is improved. Can be improved, and the manufacturing cost can be reduced.

[Brief description of the drawings]

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

FIG. 2 is a perspective view showing an example of the X-ray detection unit of the present invention.

FIG. 3 is an exploded perspective view of the X-ray detection unit.

FIG. 4 is a perspective view of the X-ray detection unit provided with legs.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... X-ray generation part, 2 ... X-ray detection part, 6 ... Metal box, 6a ...
Upper surface, 7: slit, 8 (8a, 8b): front roller,
8 (8c, 8d): front roller, 10: conveyor belt, 1
1 front roller support, 12 rear roller support.

Claims (2)

[Claims] 1. A metal box (6) having a slit (7) extending in a lateral direction on an upper surface (6a) for passing X-rays, and an X-ray detector (2) arranged in the metal box. A front roller support portion (11) and a rear roller support portion (12) extending to the front and rear in the longitudinal direction of the metal box and attached to the metal box, and detachably attached to the front roller support portion. A front roller (8) provided; a rear roller (8) removably provided on the rear roller support portion; and a metal box which surrounds the metal box in a vertical direction and is wound around the front roller and the rear roller. An X-ray detection unit, comprising: a conveyor belt (10) supported by the upper surface of the metal box when an object to be inspected is placed. 2. A metal box (6) having an X-ray generating part (1), a slit (7) extending laterally on an upper surface (6a) for passing X-rays from the X-ray generating part, An X-ray detection unit (2) disposed in the metal box; a front roller support unit (11) and a rear roller support extending longitudinally forward and rearward of the metal box, respectively, and attached to the metal box. A part (12), a front roller (8) detachably provided on the front roller support part, a rear roller (8) detachably provided on the rear roller support part, and the metal box. A transport belt (10) that is vertically wrapped around the front roller and the rear roller, and is supported by the upper surface of the metal box when an object to be inspected is placed. X-ray foreign matter detection device.