JP3207873U - X-ray foreign object detection device - Google Patents

Abstract

An X-ray foreign object detection device with improved inspection efficiency is provided. An X-ray irradiation unit 110 that irradiates an object to be detected O1 that may be contaminated with X-rays, an X-ray irradiation chamber 120 including the X-ray irradiation unit 110, and the object to be detected O1 is conveyed. The X-ray foreign object detection apparatus 100 includes a first conveyor belt 131 that conveys the detection object O1 toward the carry-in port 121 of the X-ray irradiation chamber 120, and the X-ray. A second transport belt 135 is provided for transporting the object to be detected O1 from the carry-in port 121 to the discharge port 122 of the irradiation chamber 120, and the first transport belt 131 and the second transport belt 135 are individually controlled. [Selection] Figure 2

Description

The present invention is used to generate a fluoroscopic image of a detected object by irradiating the detected object that is suspected of being contaminated with foreign matter, and to determine whether or not foreign matter is mixed in the detected object. The present invention relates to an X-ray foreign object detection device.

  2. Description of the Related Art Conventionally, an X-ray foreign object detection apparatus 200 that creates an X-ray processed image by seeing through an object O1 with X-rays as shown in FIG. 5 is known. The X-ray foreign object detection apparatus 200 includes an X-ray irradiation unit 210 that irradiates the detection object O1 with X-rays, an X-ray irradiation chamber 220 that surrounds the X-ray irradiation unit 210, and a conveyance belt that conveys the detection object O1. 230. At the time of inspection, the conveyor belt 230 conveys the detection object O1 into the X-ray irradiation chamber 220, and the X-ray irradiation unit 210 irradiates the detection object O1 with X-rays. Then, the X-ray foreign object detection device 200 generates a fluoroscopic image of the detected object O1 and displays it on the screen, and the inspector visually confirms that no foreign object is mixed in the detected object O1.

  If it is determined as a result of the inspection that no foreign matter is mixed, the conveyor belt 230 conveys the detected object O2 into the X-ray irradiation chamber 220 in order to inspect the next detected object O2. Go. After the object to be detected O2 is transported to approximately the center of the X-ray irradiation chamber 220, the X-ray irradiation unit 210 emits X-rays toward the object to be detected O2, and generates a fluoroscopic image of the object to be detected O2. We will conduct the inspection.

  By the way, in order to perform the inspection reliably and accurately, the detected objects are put into the X-ray irradiation chamber 220 one by one, and the detected objects are inspected one by one. That is, when the inspection is completed, one object to be detected is discharged from the X-ray irradiation chamber 220, and at the same time, one subsequent object to be detected is put into the X-ray irradiation chamber 220. Therefore, as shown in FIG. 5, when the inspection of the object to be detected O1 is completed, the object to be detected O1 needs to be reliably discharged from the X-ray irradiation chamber 220. It is necessary to convey the distance L1 to the discharge port 222 of the line irradiation chamber 220. In order for the detected object O2 to be carried into the X-ray irradiation chamber 220 at the same time as the detected object O1 is discharged, the interval L2 between the detected object O1 and the detected object O2 is at least the distance L1. That should be the above. If the distance L2 is less than the distance L1, the detected object O2 is carried into the X-ray irradiation chamber 220 without being completely discharged from the X-ray irradiation chamber 220, and the X-ray irradiation chamber 220 This is because there are two detected objects O1 and O2 to be detected.

  However, the X-ray shielding chamber 240 is provided in front of the carry-in port 221, and it is not preferable for the inspector to put the detection object O2 directly into the X-ray shielding chamber 240. Therefore, as shown in FIG. 5, the inspector must put the object to be detected O2 on the transport belt 230 from the front of the X-ray shielding chamber 240, and the interval L2 between the object to be detected O1 and the object to be detected O2. Becomes larger than the distance L1. Then, after the inspection of the object to be detected O1 is finished, it takes a transport time to move the interval L2 until the object to be detected O2 is transported into the X-ray irradiation chamber 220, and the inspection efficiency is poor. There is.

  In addition, when the object to be detected O3 subsequent to the object to be detected O2 is arranged on the conveyor belt 230, the interval L3 between the object to be detected O2 and the object to be detected O3 must be at least the distance L1 or more (as described above). This is because the two objects to be detected O2 and the object to be detected O3 must not exist in the X-ray irradiation chamber 220 at the time of inspection). For this reason, since the interval between the objects to be detected must be at least the distance L1 or more, many objects to be detected cannot be arranged on the conveyor belt 230, and there is a problem that the inspection efficiency is poor.

  Accordingly, in view of the above problems, the present invention provides an X-ray foreign object detection device that improves the efficiency of inspection.

  In order to solve the above-described problems, an X-ray foreign object detection apparatus according to the present invention includes an X-ray irradiation unit that irradiates an object to be detected that foreign matter may be mixed, and an X-ray irradiation that includes the X-ray irradiation unit. An X-ray foreign matter detection apparatus comprising a chamber and a transport belt for transporting the object to be detected, wherein the transport belt is transported toward the carry-in port of the X-ray irradiation chamber; A second conveyor belt that conveys the object to be detected from the carry-in port to the discharge port of the X-ray irradiation chamber, wherein the first and second transport belts are individually controlled. To do.

  According to the above feature, the object to be detected can be carried into the X-ray irradiation chamber by the first conveyor belt, and the object to be detected and transported in the X-ray irradiation chamber by the second conveyor belt can be independently performed. it can. For this reason, the interval between the objects to be detected on the first conveyor belt can be freely set. As a result, the number of objects to be detected arranged on the first transport belt increases, and the inspection efficiency is improved.

  Furthermore, the X-ray foreign object detection device of the present invention is provided with an X-ray shielding chamber in front of the carry-in entrance of the X-ray irradiation chamber, and the first conveyance belt is used to provide another object to be detected subsequent to the detected object. The detected object is transported into the X-ray shielding chamber.

  According to the above feature, since the first conveyor belt and the second conveyor belt are independent, the first conveyor belt moves subsequent detection objects to the X-ray shielding chamber regardless of the movement of the second conveyor belt. That is, it can be transported to the vicinity of the entrance of the X-ray irradiation chamber. And, if you want to inspect the subsequent detection object, when the first conveyor belt is driven, the detection object is immediately carried into the X-ray irradiation chamber, so that the inspection time can be shortened and the inspection efficiency can be reduced. It improves.

  The X-ray foreign matter detection apparatus of the present invention can improve the efficiency of inspection.

1 is an overall perspective view of an X-ray foreign object detection device of the present invention. It is the side view which showed the internal structure of the X-ray foreign material detection apparatus of this invention. It is a schematic block diagram of each component of the X-ray foreign material detection apparatus of this invention. It is a side view which shows the usage condition of the X-ray foreign material detection apparatus of this invention. It is the side view which showed the X-ray foreign material detection apparatus which concerns on a prior art.

DESCRIPTION OF SYMBOLS 100 X-ray foreign material detection apparatus 110 X-ray irradiation part 120 X-ray irradiation room 121 Carry-in port 122 Outlet port 130 Conveyor belt 131 First conveyer belt 135 Second conveyer belt O Object to be detected

Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is an overall perspective view of an X-ray foreign object detection device 100 of the present invention. The X-ray foreign object detection apparatus 100 includes an X-ray irradiation unit 110 that irradiates the detection object O1 with X-rays, an X-ray irradiation chamber 120 that surrounds the X-ray irradiation unit 110, and a conveyance belt that conveys the detection object O1. 130. The conveyor belt 130 includes a first conveyor belt 131 and a second conveyor belt 135 that are adjacent to each other, and the first conveyor belt 131 and the second conveyor belt 135 are individually controlled.

  As shown in FIG. 2, the X-ray irradiation chamber 120 has an internal space large enough to carry in the object O1 to be detected, and the X-ray irradiation unit 110 is attached to the upper portion of the space. . In front of the X-ray irradiation chamber 120, a carry-in port 121 for carrying in the detected object O1 is provided, and a discharge port 122 for discharging the detected object O1 is provided behind. A second transport belt 135 is positioned below the X-ray irradiation chamber 120, and the detection object O <b> 1 is transported by the second transport belt 135 from the carry-in port 121 toward the discharge port 122.

  A sensor 111 is attached below the second conveyor belt 135. The X-rays irradiated from the X-ray irradiation unit 110 pass through the detection object O1 on the second conveyance belt 135 and reach the sensor 111 below the second conveyance belt 135. The sensor 111 transmits information on the reached X-ray to the control system 160.

  In addition, an X-ray shielding chamber 140 is provided in front of the carry-in entrance 121. The X-ray shielding chamber 140 has an inlet 141 through which the detected object O1 passes and an outlet 142 through which the detected object O1 passes behind. Prepare. The first transport belt 131 is positioned below the X-ray shielding chamber 140, and the detection object O1 is transported from the inlet 141 toward the outlet 142 by the first transport belt 131. Since the outlet 142 of the X-ray shielding chamber 140 and the carry-in port 121 of the X-ray irradiation chamber 120 communicate with each other, the detected object O1 discharged from the outlet 142 of the X-ray shielding chamber 140 continues to X-rays. It is introduced into the entrance 121 of the irradiation chamber 120. The X-ray shielding chamber 140 is a room for preventing the X-rays irradiated in the X-ray irradiation chamber 120 from exiting from the carry-in entrance 121 to the inside of the X-ray shielding chamber 140. A plurality of shielding curtains S are suspended.

  Further, an X-ray shielding chamber 150 is provided behind the discharge port 122. The X-ray shielding chamber 150 has an inlet 151 through which the detection object O1 passes and an outlet 152 through which the detection object O1 passes behind. Prepare. A second transport belt 135 is positioned below the X-ray shielding chamber 150, and the detection object O <b> 1 is transported from the inlet 151 toward the outlet 152 by the second transport belt 135. Since the inlet 151 of the X-ray shielding chamber 150 and the discharge port 122 of the X-ray irradiation chamber 120 communicate with each other, the detected object O1 discharged from the discharge port 122 of the X-ray irradiation chamber 120 continues to X It is transferred to the entrance 151 of the line shielding chamber 150. The X-ray shielding chamber 150 is a room for preventing the X-rays irradiated in the X-ray irradiation chamber 120 from leaking outside from the discharge port 122. A plurality of shielding curtains S are suspended.

  Next, FIG. 3 is a schematic block diagram showing the relationship of each component of the X-ray foreign material detection apparatus 100 of the present invention. The X-ray foreign object detection device 100 is centrally managed by a control system 160, and each component included in the X-ray foreign object detection device 100 is controlled based on a command from the control system 160. The control system 160 is mounted on an existing computer (equipped with a CPU, a storage device, etc.).

  The control system 160 individually controls the transport distance and the transport speed of the first transport belt 131 and the second transport belt 135. In addition, the control system 160 issues a command to the X-ray irradiation unit 110 so that the X-ray irradiation unit 110 emits X-rays when the detection object O1 is transported into the X-ray irradiation chamber 120. Further, the control system 160 receives X-ray information from the sensor 111, and generates a fluoroscopic image of the detection object O1 from the received information. Then, the fluoroscopic image is displayed on the monitor M.

  Next, referring to FIG. 4, a usage mode of the X-ray foreign object detection device 100 of the present application will be described.

  First, in FIG. 4A, the detected object O1 is transported to the approximate center in the X-ray irradiation chamber 120 by the second transport belt 135, and in this state, the X-ray irradiation unit 110 is directed toward the detected object O1. Are irradiated with X-rays. Then, the X-ray that has passed through the detected object O1 reaches the sensor 111, and the control system 160 generates a fluoroscopic image of the detected object O1 from the X-ray information. The fluoroscopic image of the object to be detected O1 is displayed on the monitor M, and the inspector visually checks whether or not a foreign object such as a metal needle is mixed in the object to be detected O1.

  When the inspector confirms that no foreign matter is mixed in the detected object O1, the inspector controls a command to drive the first conveying belt 131 and the second conveying belt 135 in order to inspect the subsequent detected object O2. It is sent to the system 160 (for example, although not shown, the inspector issues a drive command when the switch is turned on / off). Then, as shown in FIGS. 4A and 4B, in order to discharge the detected object O <b> 1 from the X-ray irradiation chamber 120, the second transport belt 135 is a distance from the detected object O <b> 1 to the discharge port 122. The object to be detected O1 is transported at the transport speed V1 by L1. Further, the first conveyor belt 131 carries the detected object O2 at the conveying speed V2 only by the distance L4 from the detected object O2 to the carry-in port 121 in order to carry the subsequent detected object O2 into the X-ray irradiation chamber 120. Transport. In addition, the conveyance speed V1 and the conveyance speed V2 can be arbitrarily set individually according to the size of the object to be detected and various conditions.

  When the object to be detected O2 is put into the X-ray irradiation chamber 120 and moved onto the second conveyor belt 135, the first conveyor belt 131 is moved to the subsequent object to be detected as shown in FIG. It is driven until the object O3 is transported to the vicinity of the center of the X-ray shielding chamber 140. And if the to-be-detected object O3 is conveyed by the approximate center vicinity of the X-ray shielding chamber 140, the 1st conveyance belt 131 will stop a drive.

  On the other hand, when the object to be detected O2 is carried into the X-ray irradiation chamber 120 by the first conveyor belt 131, the object to be detected O2 is irradiated with X-rays as shown in FIG. 4C. It is driven until it is transported to the vicinity of the approximate center of the chamber 120. And if the to-be-detected object O2 is conveyed by the approximate center vicinity of the X-ray irradiation chamber 120, the 2nd conveyance belt 135 will stop a drive.

  In this state, the X-ray irradiation unit 110 attached to the upper part of the X-ray irradiation chamber 120 is irradiated with X-rays toward the detection object O2, and a fluoroscopic image of the detection object O2 is generated. The fluoroscopic image of the object to be detected O2 is displayed on the monitor M, and the inspector visually confirms that foreign objects such as metal needles are not mixed in the object to be detected O2. In this way, the inspection object is carried out reliably and accurately by carrying the objects to be detected O into the X-ray irradiation chamber 120 one by one.

  Next, when the inspector confirms that no foreign matter is mixed in the object to be detected O2, an instruction to drive the first conveyor belt 131 and the second conveyor belt 135 to inspect the subsequent object to be detected O3. To the control system 160. Then, the operation described in FIGS. 4A and 4B is repeated, the detected object O2 is discharged from the X-ray irradiation chamber 120, and the detected object O3 is carried into the X-ray irradiation chamber 120. become. Thereafter, when the subsequent object to be detected O4 is inspected, the above operation is repeated.

  Here, in the prior art, as shown in FIG. 5, there is only one transport belt, so that the objects to be detected O can be carried into the X-ray irradiation chamber 220 one by one. Must be at least the distance L1 or more. However, in the X-ray foreign object detection apparatus 100 of the present invention, as shown in FIG. 4, the first conveyor belt 131 is independent of the second conveyor belt 135, and therefore the X-ray irradiation chamber 120 by the first conveyor belt 131. The object to be detected O can be carried into the X-ray irradiation chamber 120 and transported and discharged by the second conveyor belt 135 independently. Therefore, the interval L4 between the detected object O2, the detected object O3, and the detected object O4 on the first transport belt 131 can be freely set so as to be shorter than L1. As a result, the number of objects to be detected O arranged on the first conveyor belt 131 is increased, and the inspection efficiency is improved.

  Further, as shown in FIG. 4, since the first transport belt 131 and the second transport belt 135 are independent, the first transport belt 131 can be used to detect a subsequent object regardless of the movement of the second transport belt 135. O 2 can be transported to the inside of the X-ray shielding chamber 140, that is, to the vicinity of the carry-in entrance 121 of the X-ray irradiation chamber 120. Then, when it is desired to inspect the object to be detected O2, when the first conveyor belt 131 is driven, the object to be detected O2 is immediately carried into the X-ray irradiation chamber 120, so that the inspection time can be shortened and the inspection efficiency can be reduced. The property is improved.

  When a foreign object is found in the detected object O, only the second transport belt 135 is driven to discharge the detected object O. Then, the first conveyor belt 131 stops, and the inspection of the subsequent detected object O can be temporarily stopped so that the detected object O is not put into the X-ray irradiation chamber 120.

  Further, as shown in FIG. 4C, the shielding curtain S before and after the object to be detected O1 in the X-ray shielding chamber 150 is closed, so that it is shielded so that X-rays are not emitted from the outlet 152. Further, since the shielding curtain S before and after the object to be detected O3 in the X-ray shielding chamber 140 is closed, it is shielded so that X-rays are not emitted from the entrance 141.

  Note that the X-ray foreign object detection device of the present invention is not limited to the above-described examples, and various modifications and combinations are possible within the scope of the claims and the scope of the embodiments. Modifications and combinations are also included in the scope of the rights.

Claims (2)

X-ray foreign object detection including an X-ray irradiation unit that irradiates an object to be detected that may be mixed with an X-ray, an X-ray irradiation chamber that includes the X-ray irradiation unit, and a conveyance belt that conveys the detection object A device,
The conveyance belt conveys a detected object toward the carry-in entrance of the X-ray irradiation chamber and a second conveyer conveys the detection object from the carry-in entrance of the X-ray irradiation chamber toward the discharge port. With a conveyor belt,
The X-ray foreign matter detection device, wherein the first transport belt and the second transport belt are individually controlled.
An X-ray shielding chamber is provided in front of the carry-in entrance of the X-ray irradiation chamber,
The X-ray foreign object detection device according to claim 1, wherein another detection object subsequent to the detection object is transferred to the X-ray shielding chamber by the first transfer belt.

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