JP2010286409A - Article inspection device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an X-ray inspection device for automatically resupplying articles to be reinspected, while keeping an increase in installation space to a minimum. <P>SOLUTION: The X-ray inspection device 1 includes: a belt conveyor 6 having a domain 6P for conveying articles 50 for regular inspection and a domain 6Q for conveying articles 50Q to be reinspected; an inspection means for inspecting the articles conveyed by the belt conveyor 6; a distribution part 10P for distributing the articles 50, conveyed on the domain 6P between non-defective articles 50P and the articles 50Q to be reinspected, according to the result of an inspection made by the inspection means; a belt conveyor 17, disposed below the belt conveyor 6 for conveying the articles 50Q transferred from the distribution part 10P, in a direction which is opposite to the direction of conveyance by the belt conveyor 6; and a supply part 14 for supplying the articles 50Q transferred from the belt conveyor 17 to the domain 6Q on the upstream of the belt conveyor 6. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an article inspection apparatus, and more particularly to an X-ray inspection apparatus.

  In Patent Document 1 below, an article conveyance surface of a belt conveyor is divided into two areas by a partition plate, so that a normal inspection is performed in one area. An X-ray inspection apparatus capable of performing re-inspection in a region is disclosed.

JP 2004-132919 A

  According to the X-ray inspection apparatus disclosed in Patent Document 1, means for re-supplying an X-ray inspection apparatus with an article determined to be defective in a normal inspection is not automated. Therefore, it is necessary for the operator to manually perform the resupply operation, which is complicated. On the other hand, since the installation space of the X-ray inspection apparatus usually has certain restrictions, it is necessary to minimize the increase in the installation space when adding a means for performing automatic resupply.

  The present invention has been made in view of such circumstances, and an object thereof is to obtain an article inspection apparatus capable of automatically resupplying an article to be reinspected while minimizing an increase in installation space. It is what.

  The article inspection apparatus according to the first aspect of the present invention includes: a first transport unit having a first area for transporting an article to be inspected normally; and a second area for transporting an article to be inspected again. An inspection means for inspecting an article by irradiating the article being conveyed by the first conveying means and detecting the radiation transmitted through the article, and a proximity to a downstream portion of the first conveying means Distributing means for distributing the articles that have been arranged and transported through the first area into non-defective articles and articles to be reinspected according to the inspection result by the inspecting means, and disposed below the first conveying means And the second transfer means for transferring the reinspected article delivered from the sorting means in a direction opposite to the transfer direction by the first transfer means, and the delivery from the second transfer means. The re-inspected article is placed upstream of the first conveying means. Is characterized in further comprising a supply means for supplying Oite the second region.

  According to the article inspection apparatus according to the first aspect, the second transport unit transports the re-inspection target article delivered from the sorting unit in a direction opposite to the transport direction by the first transport unit. Then, the supply means supplies the reinspection target article delivered from the second transport means to the second region in the upstream portion of the first transport means. Thereby, it becomes possible to automatically re-supply the re-inspection target article determined to be unacceptable in the normal inspection to the second region of the first conveying means. In addition, since the second transport unit is disposed below the first transport unit, the installation space does not increase in a plane even if the second transport unit is added. Therefore, since the installation space to be increased is only the increase due to the addition of the supply means, the increase in the installation space can be minimized.

  The article inspection apparatus according to a second aspect of the present invention is the article inspection apparatus according to the first aspect, in particular, the supply means includes a vicinity of a downstream portion of the second conveyance means and an upstream of the first conveyance means. The article to be re-inspected having a rotating structure in which a plurality of small rooms circulate along a path including the vicinity of the section has been transported by the second transport means falls from the downstream portion of the second transport means. The article to be reinspected accommodated in the small room is circulated to the vicinity of the upstream portion of the first transfer means, and then dropped from the small room, and then the It is characterized by being supplied to the second region.

  According to the article inspection apparatus according to the second aspect, the supply unit circulates the plurality of small rooms along a path including the vicinity of the downstream portion of the second transfer unit and the vicinity of the upstream portion of the first transfer unit. Has a rotating structure. Then, the reinspection object that has been conveyed by the second conveying means is accommodated in the small room by dropping from the downstream portion of the second conveying means, and the reinspection object that is accommodated in the small room is After being circulated to the vicinity of the upstream portion of the first conveying means, it is supplied to the second region by dropping from the small chamber. By adopting such a rotating structure, it is possible to suppress an increase in installation space accompanying the addition of the supply means.

  The article inspection apparatus according to the third aspect of the present invention is characterized in that, in the article inspection apparatus according to the second aspect, the volume of the small room is set according to the width of the second region. It is.

  According to the article inspection apparatus according to the third aspect, the volume of the small room is set according to the width of the second region. Accordingly, when the width of the second area is relatively narrow, the volume of the small room is set to be relatively small, thereby avoiding a situation where a large amount of articles to be reinspected are simultaneously supplied to the narrow second area. be able to.

  According to the present invention, it is possible to automatically resupply an article to be reinspected to an article inspection apparatus while minimizing an increase in installation space.

It is a figure which shows typically the whole structure of the X-ray inspection apparatus which concerns on embodiment of this invention. It is a top view which shows the structure of a belt conveyor, a slope, and a distribution part. It is a figure which shows the X-ray irradiation part and X-ray detection part which were seen from the Y-axis direction. It is a figure which shows the supply part seen from the Y-axis direction. It is a figure which shows the example of the shape inspection of the articles | goods using an X-ray inspection apparatus. It is a figure which shows the example of the test | inspection of the articles | goods using an X-ray inspection apparatus.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In addition, the element which attached | subjected the same code | symbol in different drawing shall show the same or corresponding element.

  FIG. 1 is a diagram schematically showing an overall configuration of an X-ray inspection apparatus 1 according to an embodiment of the present invention. The X-ray inspection apparatus 1 includes a base portion 2 installed on a floor surface, a shield box 3 fixed on the base portion 2, and a housing 4 fixed on the shield box 3.

  The shield box 3 has a function of preventing leakage of X-rays to the outside of the shield box 3. The shield box 3 carries the carry-in entrance 5A for carrying the article 50 into the shield box 3 from the outside and the article 50 determined to be non-defective (hereinafter referred to as “non-defective product 50P”) to the outside of the shield box 3. And a discharge port 5C for discharging an article 50 determined to be re-inspected (hereinafter referred to as “re-inspection object 50Q”) to the outside of the shield box 3. Yes. The article 50 is, for example, food, and in the example of the present embodiment, is an unwrapped raw material product (so-called rose product) such as a wiener. Although not shown in FIG. 1, a shielding curtain or the like is attached to the carry-in entrance 5 </ b> A, the carry-out exit 5 </ b> B, and the exit 5 </ b> C to prevent X-ray leakage to the outside of the shield box 3. Yes.

  Inside the shield box 3, a belt conveyor 6 that conveys the article 50 along the plus Y-axis direction in the figure, and a slope for delivering the article 50 carried from the carry-in entrance 5 </ b> A to the upstream portion of the belt conveyor 6. 7, an X-ray irradiation unit 8 that irradiates the article 50 with X-rays, an X-ray detection unit 9 that detects X-rays transmitted through the article 50, and a distribution unit 10 are arranged. When a foreign substance is mixed in the article 50, the intensity of transmitted X-rays is reduced at the mixed part of the foreign substance. Therefore, the presence / absence of contamination and the location of contamination can be identified based on the detection result of transmitted X-rays by the X-ray detection unit 9. Moreover, based on the detection result of the transmitted X-rays by the X-ray detection unit 9, an X-ray transmission image relating to the article 50 can be created, and thereby the presence or absence of a shape defect can be inspected.

  The distribution unit 10 is disposed close to the downstream portion of the belt conveyor 6 and can be positioned at a position indicated by a solid line and a position indicated by a broken line in FIG. 1 by rotational driving. The articles 50 discharged from the belt conveyor 6 and delivered to the sorting unit 10 are sorted toward the carry-out port 5B when the sorting unit 10 is positioned at the position indicated by the solid line. When the part 10 is positioned at a position indicated by a broken line, the part 10 is distributed toward the discharge port 5C. The distribution unit 10 distributes the non-defective product 50P toward the carry-out port 5B, and distributes the re-inspection object 50Q toward the discharge port 5C.

  A monitor 11 having a touch panel function is attached to the housing 4. The monitor 11 displays inspection conditions, inspection results, an X-ray transmission image related to the article 50, and the like. In addition, a control unit 12 for controlling the overall operation of the X-ray inspection apparatus 1 is disposed inside the housing 4.

  In addition, the X-ray inspection apparatus 1 includes a belt conveyor 15 that carries the article 50 into the carry-in entrance 5A, a belt conveyor 16 that carries the non-defective product 50P carried out from the carry-out exit 5B, and a re-examination that is discharged from the discharge port 5C. And a belt conveyor 17 that conveys the target article 50Q. The belt conveyor 17 is disposed below the shield box 3 (that is, below the belt conveyor 6), and along the negative Y-axis direction in the drawing (that is, the direction opposite to the conveying direction of the article 50 by the belt conveyor 6). The reinspection object 50Q is conveyed.

  The X-ray inspection apparatus 1 also includes a base portion 13 installed on the floor surface and a supply portion 14 fixed on the base portion 13. The reinspection object 50Q is delivered to the supply unit 14 from the belt conveyor 17, and the supply unit 14 re-supplys the reinspection object 50Q into the carry-in entrance 5A for reinspection. Details of the structure and operation of the supply unit 14 will be described later.

  FIG. 2 is a top view showing the structures of the belt conveyors 6, 15, 16, the slope 7, and the distribution unit 10. The belt conveyor 6 is provided with a side wall 24 for preventing the article 50 from falling from the side and a partition plate 25 for partitioning the article conveying surface. The side wall 24 and the partition plate 25 extend along the Y-axis direction in the drawing. The article conveyance surface of the belt conveyor 6 is partitioned into a region 6P and a region 6Q by a partition plate 25.

  Similarly, a side wall 20 and a partition plate 21 are attached to the belt conveyor 15, and an article conveyance surface of the belt conveyor 15 is partitioned into a region 15 </ b> P and a region 15 </ b> Q by the partition plate 21. In addition, a side wall 22 and a partition plate 23 are attached to the slope 7, and an article transport surface of the slope 7 is partitioned into a region 7 </ b> P and a region 7 </ b> Q by the partition plate 23.

  Moreover, the distribution part 10 has the distribution part 10P and the distribution part 10Q which can be driven mutually independently. A side wall 26 is attached to the distribution unit 10P, and a side wall 27 is attached to the distribution unit 10Q. A side wall 28 is attached to the belt conveyor 16.

  As shown in FIG. 2, the regions 15P, 7P, 6P and the distribution unit 10P are continuous in this order along the Y-axis direction in the drawing. Similarly, the regions 15Q, 7Q, 6Q and the distributing unit 10Q are continuous in this order along the Y-axis direction in the drawing.

  The article 50 conveyed from the upstream device by the belt conveyor 15 is conveyed on the region 15P and carried into the shield box 3 from the carry-in entrance 5A. Then, an inspection (inspection not re-inspection; hereinafter referred to as “normal inspection”) is performed while being slid down on the region 7P, supplied to the region 6P, and conveyed on the region 6P. As a result of the normal inspection, the non-defective product 50P slides down on the distribution unit 10P (the distribution unit 10 at the position shown by the solid line in FIG. 1) and is delivered to the belt conveyor 16, while the reinspection object 50Q is It slides down on the distribution part 10P (the distribution part 10 of the position shown with the broken line in FIG. 1), and is delivered to the belt conveyor 17 shown in FIG.

  The reinspection target article 50Q is supplied to the region 15Q from the supply unit 14 shown in FIG. The reinspection object 50Q is conveyed on the area 15Q and is carried into the shield box 3 from the carry-in entrance 5A. Then, it slides down on the area 7Q, is supplied to the area 6Q, and is re-inspected while being conveyed on the area 6Q. As a result of the re-inspection, the re-inspection target product 50Q determined to be non-defective is slid down on the distribution unit 10Q (the distribution unit 10 at the position indicated by the solid line in FIG. 1) and delivered to the belt conveyor 16. The reinspection target product 50Q determined to be defective is removed from the production line by the sorting unit 10Q.

  FIG. 3 is a diagram illustrating the X-ray irradiation unit 8 and the X-ray detection unit 9 viewed from the Y-axis direction. The X-ray detection unit 9 has a line sensor in which a plurality of X-ray detection elements are arranged in a straight line along the X-axis direction. Of these plural X-ray detection elements, the element corresponding to the region 6P is used for normal inspection, and the element corresponding to the region 6Q is used for re-inspection. The inspection conditions may be the same or different between the normal inspection and the re-inspection. When different inspection conditions are used, for example, by setting thresholds relating to the intensity of transmitted X-rays to values different from each other, it is possible to set a criterion for pass / fail in re-inspection more strictly than that in normal inspection. Instead of the line sensor, an area sensor in which a plurality of X-ray detection elements are arranged in a plane along the X-axis direction and the Y-axis direction may be used.

  FIG. 4 is a diagram illustrating the supply unit 14 viewed from the Y-axis direction. The supply unit 14 has a structure in which a ring-shaped rotating body 36 is attached to the inner surface of the frame body 35. The rotating body 36 is continuously driven to rotate at a constant speed in a direction indicated by an arrow M2 in the drawing by a driving unit (not shown). A plurality of small chambers 38 partitioned by a partition plate 37 are continuously formed on the inner surface of the rotating body 36. The partition plate 37 is fixed to the inner surface of the rotating body 36 in a tilted posture at a predetermined angle so that the inner side is positioned forward of the outer side with respect to the rotation direction indicated by the arrow M2. Each of the small rooms 38 has a box shape whose inner surface is open.

  As shown in FIGS. 1 and 4, the belt conveyor 17 has a downstream portion inserted into the internal space of the frame body 35. A side wall 30 is attached to the belt conveyor 17 to prevent the reinspected article 50Q from falling from the side. Further, the belt conveyor 15 is disposed through the internal space of the frame body 35.

  The reinspection object 50 conveyed along the minus Y-axis direction by the belt conveyor 17 is accommodated in any one of the small rooms 38 by freely falling from the downstream end of the belt conveyor 17 as indicated by an arrow M1. Is done. Since the small room 38 circulates in the direction indicated by the arrow M <b> 2, the reinspection object 50 </ b> Q accommodated in the small room 38 is conveyed upward as the small room 38 circulates.

  When the circulation proceeds to a position where the inner side of the partition plate 37 is located below the outer side, the reinspection target product 50Q accommodated in the small room 38 falls freely from the small room 38 as indicated by an arrow M3. To do. The belt conveyor 15 is disposed at a location where the reinspection target article 50Q that has freely dropped from the small room 38 can be received by the region 15Q. Further, the partition plate 21 having a height higher than that of the side wall 20 prevents the reinspection target article 50Q from being mixed into the region 15P. As a result, the reinspected article 50Q is delivered from the small room 38 to the area 15Q, and then supplied to the area 6Q of the belt conveyor 6 via the area 7Q of the slope 7 as shown in FIG.

  Moreover, in the supply part 14, the volume of each small room 38 can be changed by adjusting the space | interval of the partition plates 37. FIG. When the width of the region 15Q (dimension in the X-axis direction) is set to be relatively narrow, the volume of each small room 38 can be set to be relatively small by narrowing the interval between the partition plates 37. On the other hand, when the width of the region 15Q is set to be relatively wide, the volume of each small room 38 can be set to be relatively large by widening the interval between the partition plates 37.

  As described above, according to the X-ray inspection apparatus 1 (article inspection apparatus) according to the present embodiment, the first transport means (belt conveyor 6) is the first area (area) that transports the article 50 to be subjected to normal inspection. 6P) and a second region (region 6Q) for transporting the reinspection article 50Q. Further, the second transport means (belt conveyor 15) transports the reinspection target article 50Q delivered from the sorting unit 10P in the direction opposite to the transport direction by the belt conveyor 6. Then, the supply means (supply unit 14) supplies the reinspection target product 50Q delivered from the belt conveyor 17 to the upstream portion of the region 6Q via the regions 15Q and 7Q. As a result, the reinspection target product 50Q determined to be unacceptable in the normal inspection can be automatically resupplied to the region 6Q. Moreover, since the belt conveyor 17 is arrange | positioned under the belt conveyor 6, even if the belt conveyor 17 is added, installation space does not increase planarly. Therefore, since the installation space to be increased is only an increase due to the addition of the supply unit 14 (and the base unit 13), an increase in the installation space can be minimized.

  Further, according to the X-ray inspection apparatus 1 according to the present embodiment, the supply unit 14 includes the downstream of the second transport unit (belt conveyor 17) and the first transport unit (belt conveyor 15, slope 7). And a rotating structure in which a plurality of small chambers 38 circulate along a path including the vicinity of the upstream portion of the belt conveyor 6). Then, the reinspection object 50Q conveyed by the belt conveyor 15 is accommodated in the small room 38 by dropping from the downstream portion of the belt conveyor 17, and the reinspection object 50Q accommodated in the small room 38 is After being circulated to the vicinity of the belt conveyor 15, it is supplied to the second area (area 15Q) by dropping from the small room 38. By adopting such a rotating structure, an increase in installation space accompanying the addition of the supply unit 14 can be suppressed.

  Further, according to the X-ray inspection apparatus 1 according to the present embodiment, the volume of the small room 38 can be set according to the width of the region 15Q. Therefore, when the width of the area 15Q is relatively narrow, the volume of the small room 38 is also set to be relatively small, thereby avoiding a situation where a large amount of articles 50Q to be reinspected are simultaneously supplied to the narrow area 15Q. be able to.

<First Modification>
In this modified example, a method capable of accurately inspecting the presence or absence of a shape defect in an article will be described.

  FIG. 5 is a diagram illustrating an example of shape inspection of the article 60 using the X-ray inspection apparatus 1. The article 60 is, for example, food, and is a wiener in the present modification.

  First, as shown in FIG. 5A, an X-ray transmission image is created based on a transmission X-ray detection result by the X-ray detection unit 9, and the created X-ray transmission image is binarized and contracted. Or, it is divided into regions of individual articles 60 by expansion processing or the like. Next, each article 60 is distinguished by assigning a unique number to each article 60 by a labeling process.

  Next, as shown in FIG. 5B, contour pixels relating to individual articles 60 are obtained.

  Next, as shown in FIG. 5C, the coordinates of the most distant pixels 61 and 62 among the plurality of contour pixels are specified, and a linear distance L1 between the pixels 61 and 62 is obtained. Then, the obtained distance L1 is determined as the length related to the article 60.

  Next, as shown in FIG. 5D, the coordinates of the pixels 63 and 64 located in the middle of the pixels 61 and 62 on the left and right sides are specified, and a linear distance L2 between the pixels 63 and 64 is obtained. Then, the obtained distance L2 is determined as the width (thickness) related to the article 60.

  Next, as shown in FIG. 5E, the coordinates of the midpoint F1 of the line connecting the pixels 61 and 62 and the coordinates of the midpoint F2 of the line connecting the pixels 63 and 64 are obtained, and the midpoint F1 is obtained. , F2 is obtained. Then, the obtained distance L3 is determined as the degree of curvature related to the article 60.

  With respect to the length, width, and curvature of the article 60, predetermined allowable ranges are set in advance. If at least one (or at least two) of the length, width, and curvature of the article 60 determined above is not included in the corresponding allowable range, the article 60 is regarded as defective. It is judged and excluded from the production line.

  FIG. 5F shows an example related to an article 60 that is greatly curved. In this case, since the distance L3 is larger than the upper limit value of the allowable range regarding the degree of curvature, the article 60 is determined to be defective.

  As described above, according to the first modified example, it is possible to determine the presence / absence of a defective shape of the article 60 such as a wiener based on the criteria of length, width, and curvature. When the presence or absence of a shape defect is determined on the basis of area and perimeter, the “thick and short article” and the “long and thin article” cannot be determined as defective. On the other hand, it is possible to determine “thick and short article” and “long and thin article” as defective products by determining according to the criteria of length, width, and curvature as in this modification. Become. As a result, inspection accuracy and inspection speed are improved.

<Second Modification>
In this modification, a method capable of specifying the amount of the non-defective product 50 </ b> P conveyed from the X-ray inspection apparatus 1 when processing an unwrapped raw material as in the above embodiment will be described.

  First, with respect to the article 50 supplied from the upstream apparatus, an X-ray transmission image is created based on the transmission X-ray detection result by the X-ray detection unit 9, and the created X-ray transmission image is divided into regions of individual articles 50. To do.

  Next, the weight of each article 50 is estimated based on the area of each article 50 (convertible from the number of pixels of the contour pixels shown in FIG. 5B) and the known weight density related to the article 50. At that time, the weight of each article 50 can be estimated more accurately by obtaining the thickness of the article 50 based on the density of the X-ray transmission image and estimating the weight in consideration of the thickness.

  The total weight of the articles 50 supplied from the upstream apparatus (hereinafter referred to as “first weight value”) is obtained by estimating the weight of all the articles 50 supplied from the upstream apparatus and integrating the weights. . In addition, the weights of all the articles 50 excluded from the production line as defective products are estimated, and the total weights of the articles 50 excluded from the production line (hereinafter, “second weight value”) are accumulated. Called).

  Next, the weight value of the non-defective product 50P conveyed from the X-ray inspection apparatus 1 is obtained by subtracting the second weight value from the first weight value.

  As described above, according to the second modification, the weight value of the non-defective product 50P conveyed from the X-ray inspection apparatus 1 can be obtained by weight estimation using the X-ray transmission image. Therefore, for example, when a step of adding a preservative or the like to the non-defective product 50P is performed after the inspection by the X-ray inspection apparatus 1, the amount of the additive can be appropriately adjusted according to the weight value of the non-defective product 50P.

<Third Modification>
In this modified example, a technique capable of improving the visibility of an operator will be described for an article that is premised on visual inspection of an X-ray transmission image when inspecting for the presence of foreign matter and the presence of a shape defect. .

  FIG. 6 is a diagram illustrating an example of inspection of an article 70 using the X-ray inspection apparatus 1. The article 70 is an article having a relatively large difference between the long side and the short side. In the present modification, for example, the article 70 is a box containing shoes 71.

  FIG. 6A shows a state in which a plurality of articles 70 are placed on the belt conveyor 6 in a non-aligned state. When an X-ray transmission image related to the article 70 is displayed on the monitor 11 in this state, the display position and direction of the X-ray transmission image in the monitor 11 vary from one article 70 to another, so that the visibility of the operator is lowered.

  Therefore, the external shape of the article 70 is specified by image processing, and image correction processing is performed so that an X-ray transmission image related to the article 70 is always displayed in a certain place and in a certain direction in the monitor 11. For example, the positions of the long side and the short side of the article 70 are specified by specifying the contour pixels related to the article 70 as in the first modified example. Then, an image rotation process and a movement process in the up / down / left / right direction are performed so that the long side and the short side are always displayed at predetermined positions in the monitor 11. As a result, the variation in the placement direction of the article 70 and the variation in the placement position of the article 70 in the width direction of the belt conveyor 6 are corrected. As a result, as shown in FIG. X-ray transmission images regarding each article 70 are displayed in a predetermined direction and at a predetermined position in the monitor 11 as if they were placed on the belt conveyor 6 in an aligned state.

  As described above, according to the third modified example, the X-ray transmission image regarding each article 70 can be displayed in the predetermined direction and the predetermined position in the monitor 11 by performing the correction process of the X-ray transmission image. Therefore, the visibility of the operator can be improved.

  In the above description, an example in which the present invention is applied to an X-ray inspection apparatus has been described. However, the present invention is not limited to this example, and the present invention is also applicable to other article inspection apparatuses such as a metal detection apparatus and a weight inspection apparatus. Is possible.

DESCRIPTION OF SYMBOLS 1 X-ray inspection apparatus 6,15,17 Belt conveyor 6P, 6Q, 7P, 7Q, 15P, 15Q area | region 7 Slope 8 X-ray irradiation part 9 X-ray detection part 10, 10P, 10Q Distribution part 14 Supply part 36 Rotating body 38 Small room 50 Goods 50P Goods 50Q Goods to be reinspected

Claims (3)

A first conveying means having a first area for conveying an article to be inspected normally and a second area for conveying an article to be reinspected;
Inspection means for inspecting an article by irradiating the article being conveyed by the first conveying means and detecting the radiation transmitted through the article;
Distributing means that distributes the articles that are arranged in the vicinity of the downstream portion of the first conveying means and have been conveyed through the first area into non-defective articles and articles to be reinspected according to the inspection result by the inspecting means; ,
A second transport unit disposed below the first transport unit and configured to transport the reinspection target article delivered from the sorting unit in a direction opposite to the transport direction of the first transport unit; ,
An article inspection apparatus comprising: a supply unit that supplies the reinspection target article delivered from the second conveyance unit to the second region in an upstream portion of the first conveyance unit. The supply means has a rotating structure in which a plurality of small chambers circulate along a path including the vicinity of the downstream portion of the second transfer means and the vicinity of the upstream portion of the first transfer means,
The reinspection object conveyed by the second conveying means is accommodated in the small room by dropping from the downstream portion of the second conveying means,
The reinspection object accommodated in the small room is supplied to the second region by falling from the small room after being circulated to the vicinity of the upstream portion of the first transport means. The article inspection apparatus according to 1. The article inspection apparatus according to claim 2, wherein a volume of the small room is set according to a width of the second region.

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