JP6836482B2 - Goods inspection equipment - Google Patents

Description

The present invention relates to an article inspection device.

In an article inspection device that inspects an object to be inspected by irradiating an electromagnetic wave such as X-rays or light, an electromagnetic wave irradiation space is formed in a transport path of the object to be inspected. Electromagnetic waves are irradiated from above the electromagnetic wave irradiation space by the electromagnetic wave generating part. The electromagnetic wave irradiated to the object to be inspected is detected by the electromagnetic wave detection unit arranged below the electromagnetic wave generation unit on the opposite side of the electromagnetic wave irradiation space. Further, the article inspection device has an upstream side conveyor and a downstream side conveyor which are divided across the electromagnetic wave irradiation space. The upstream conveyor and the downstream conveyor convey the object to be inspected while passing it through the electromagnetic wave irradiation space.

By the way, a transfer plate is arranged in the gap between the upstream conveyor and the downstream conveyor, which is the electromagnetic wave irradiation space. The transfer plate is a transparent or translucent synthetic resin plate, which is made of a material through which both X-rays and light can easily pass through and has a thickness dimension that allows both X-rays and light to easily pass through. By providing this transfer plate, the object to be inspected transferred from the upstream conveyor to the downstream conveyor can easily maintain a substantially horizontal posture in the gap.

Japanese Patent No. 5720029

However, in the conventional article inspection device, a transfer plate is arranged in the gap between the upstream conveyor and the downstream conveyor so that the transport surface is continuous, so that the object to be inspected is transferred from the upstream to the downstream. However, the object to be inspected is placed on each of the upstream and downstream belts, and the object to be inspected slides on the transfer plate arranged between the two belts. That is, there is a risk that the object to be inspected may come into surface contact with the plate surface on the transfer plate, and the posture may change due to the transfer resistance at the connecting portion, for example, the object may be slanted with respect to the transfer direction. In the article inspection device, when the object to be inspected changes its posture in the connecting portion, that is, in the electromagnetic wave irradiation space, the inspection accuracy and the sorting accuracy may be affected.

The present invention has been made in view of the above circumstances, and an object of the present invention is to enable smooth transfer between the upstream conveyor and the downstream conveyor when the object to be inspected transfers from the upstream conveyor to the downstream conveyor. The purpose of the present invention is to provide an article inspection device capable of suppressing a change in the posture of an object to be inspected.

Next, means for solving the above problems will be described with reference to the drawings corresponding to the embodiments.
The article inspection device 1 according to claim 1 of the present invention includes an electromagnetic wave irradiation space 17 in which electromagnetic waves are irradiated from the electromagnetic wave generator 18 toward the electromagnetic wave detection unit 19.
An upstream conveyor 5 on which a belt 16 is hung on at least a pair of rollers 14 and 15 and whose upper surface serves as a mounting surface 21 for transporting an inspected object W.
The belt 16 is hung on at least a pair of other rollers 14 and 15, and the upper surface becomes a mounting surface 22 which is flush with the above-described mounting surface 21. The upstream conveyor is separated by a gap 10 including the electromagnetic wave irradiation space 17. A downstream conveyor 6 that allows the object W to be inspected to pass through the gap 10 and transfer to the above-mentioned mounting surface 22 by being divided into 5 and arranged.
A pair facing each other across the electromagnetic wave irradiation space 17 are arranged in the gap 10 so that the electromagnetic wave can pass through , each of which is formed to have a smaller diameter than the rollers 14 and 15, and has the same axis as the rollers 14 and 15. A guide member 23 made of a bar having a convex curved surface whose axial cross section projects upward in the direction.
It is characterized by having.

In the article inspection device 1, when the inspected object W transported by the upstream conveyor 5 reaches the transport end, the front portion in the transport direction enters the gap 10. The front portion of the object W to be inspected that has entered the gap 10 in the transport direction is transferred to the guide member 23 arranged on the upstream side of the electromagnetic wave irradiation space 17. Since the guide member 23 has a convex curved surface, the inspected object W can be smoothly transferred. The inspected object W transferred to the guide member 23 on the upstream side is further pushed in the conveying direction due to friction between the rear portion of the inspected object W in the conveying direction and the mounting surface 21. When the object W to be inspected moves on the guide member 23 and moves in the transport direction, the lower surface of the object W makes line contact with the convex curved surface of the guide member 23, so that the contact resistance is reduced as compared with the case of surface contact by the transfer plate of the conventional configuration. Therefore, the transport resistance is suppressed as compared with the conventional configuration. The object W to be inspected supported by the guide member 23 on the upstream side is further transported so that the front portion in the transport direction passes through the electromagnetic wave irradiation space 17. The front portion of the object W to be inspected that has passed through the electromagnetic wave irradiation space 17 transfers to the guide member 23 on the downstream side opposite to the guide member 23 on the upstream side across the electromagnetic wave irradiation space 17. Since the guide member 23 on the downstream side also has a convex curved surface, the object W to be inspected can be smoothly transferred. When the object W to be inspected transferred to the guide member 23 on the downstream side is further pushed in the transport direction, the front portion in the transport direction is transferred to the mounting surface 22 of the downstream conveyor 6. The object W to be inspected, whose front portion in the transport direction has moved to the mounting surface 22 of the downstream conveyor 6, is then pulled to the downstream side by friction with the mounting surface 22 of the downstream conveyor 6 to the downstream conveyor 6. Will be reprinted. When the object W to be inspected passes through the connecting portion 46 provided with the guide member 23, the contact resistance is reduced as compared with the conventional configuration, so that the connecting object W can be smoothly connected. Therefore, the posture of the object W to be inspected is less likely to change in the electromagnetic wave irradiation space 17.

The article inspection device 1 according to claim 2 of the present invention is the article inspection device 1 according to claim 1.
The guide member 23A arranged on the upstream side of the electromagnetic wave irradiation space 17 of the guide member 23 is provided on the upstream side conveyor 5, and is arranged so that the generatrix at the top of the convex curved surface coincides with the above-mentioned mounting surface 21. Being done
The guide member 23B arranged on the downstream side of the electromagnetic wave irradiation space 17 of the guide member 23 is provided on the downstream side conveyor 6 and is arranged so that the generatrix at the top of the convex curved surface coincides with the above-mentioned mounting surface 22. It is characterized by being done.

In the article inspection device 1, the upstream guide member 23A and the downstream guide member 23B sandwiching the electromagnetic wave irradiation space 17 are such that the upstream guide member 23A is attached to the upstream conveyor 5 and the downstream guide member 23B. Is attached to the downstream conveyor 6.
Therefore, if the upstream conveyor 5 and the downstream conveyor 6 are mounted with their respective mounting surfaces 21 and 22 on the same plane, the tops of the respective guide members 23A and 23B are also flush with the mounting surfaces 21 and 22. It will be positioned. That is, if the article inspection device 1 mounts the upstream conveyor 5 and the downstream conveyor 6 at regular positions, the mounting of both guide members 23A and 23B is completed at the regular positions at the same time. Therefore, it is possible to easily reassemble the conveyor 4 at the time of cleaning or maintenance.

The article inspection device 1 according to claim 3 of the present invention is the article inspection device 1 according to claim 1 or 2.
The guide member 23 (23A, 23B), the axis orthogonal cross section, characterized in that a circular shape.

In this article inspection device 1, the guide member 23 (23A, 23B) has a round bar shape having a circular cross section perpendicular to the axis, and is supported by the guide member 23 (23A, 23B) when the object W to be inspected is transferred. Therefore, the contact resistance can be further reduced, and the object W to be inspected moves smoothly. The guide members 23 (23A, 23B) may be be rotatably supported about the axis by the rotation support, the article inspection apparatus 1, when the object W is possessed, the guide member 23 (23A, 23B) rotates, that is, it becomes like a roller conveyor, and the contact resistance can be further reduced, so that the object W to be inspected moves smoothly.

According to the article inspection apparatus according to claim 1 according to the present invention, when the object to be inspected transfers from the upstream conveyor to the downstream conveyor, a guide member having a convex curved surface that makes line contact is arranged, so that the contact Resistance is reduced, smooth transit is possible, and changes in the posture of the object to be inspected can be suppressed. This reduces the effect on inspection accuracy and the like. In addition, the guide member is arranged at a position avoiding the electromagnetic wave irradiation space, and does not interfere with the electromagnetic wave irradiation.

According to the article inspection apparatus according to claim 2 according to the present invention, the tops of the guide members can be easily placed on the mounting surface by aligning the mounting surfaces of the upstream conveyor and the downstream conveyor on the same plane and butting them against each other. Can be placed in line.

According to the article inspection device according to claim 3 of the present invention, the transport resistance between the guide member and the object to be inspected is reduced to enable smoother connection and more reliably suppress the change in posture of the object to be inspected. it can.

It is a perspective view which looked at the article inspection apparatus of embodiment which concerns on this invention from the front side. It is an enlarged view of the main part of the transfer part shown in FIG. It is an exploded perspective view of the guide member mounting part. It is explanatory drawing at the time of adjustment of the guide member mounting part. It is explanatory drawing at the time of operation of a transit part. It is a side view of the main part of the article inspection apparatus which concerns on the modification which attached the guide member to the upstream side conveyor and the downstream side conveyor. (A) is a side view of a main part of an article inspection device according to a modified example in which the guide member is formed in a semicircular cross section, and (b) is a main part of an article inspection device according to a modified example in which the guide member is formed in a semicircular shape. It is a side view.

Hereinafter, embodiments according to the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view of the article inspection device 1 according to the embodiment of the present invention as viewed from the front side.
The article inspection device 1 in this embodiment irradiates the object W to be inspected (see FIG. 4) with X-rays which are electromagnetic waves, detects the X-rays transmitted through the object W to be inspected, and is based on the amount of X-ray transmission. This is a device that detects foreign matter when it is mixed in the object W to be inspected.

The article inspection device 1 shown in FIG. 1 supports a housing 2 which is a substrate (frame) for installing or mounting various parts and the like constituting the device in a predetermined arrangement, and the housing 2 on an installation surface. It has a leg portion 3 for the purpose. The housing 2 is made of a shielding structure and material that does not allow electromagnetic waves used for inspection to be transmitted to the outside. Inside the housing 2, the object W to be inspected is carried into the inside of the housing 2, and after the inspection, the object W to be inspected is carried to the upstream side and the downstream side in the transport direction in order to be carried out of the housing 2. An open internal space S is provided. Then, as will be described later, a conveyor 4 (upstream side conveyor 5 and downstream side conveyor 6) for conveying the object W to be inspected is arranged in the internal space S, and the openings on the upstream side and the downstream side of the internal space S are arranged. Of these, the parts above the conveyor 4 are the inlet 7 and the outlet 8 through which the object W to be inspected passes, respectively.

Further, although not shown, shielding means such as a shielding door for shielding electromagnetic waves or a flexible shielding curtain is attached to the inlet 7 and the outlet 8 of the internal space S open to the outside. Further, as shown in FIG. 1, a lid portion 9 having a shielding structure is attached to the front surface side of the housing 2 so as to be openable and closable, and the internal space S of the housing 2 is opened by opening the lid portion 9. , The conveyor 4 (upstream side conveyor 5 and downstream side conveyor 6) can be removed to clean and maintain the inside of the housing 2.

FIG. 2 is an enlarged view of a main part of the connecting portion shown in FIG.
As shown in FIGS. 1 and 2, in the internal space S of the housing 2, the upstream conveyor 5 is horizontally arranged in the front half of the inlet 7 side in the transport direction of the object W to be inspected. Further, the downstream conveyor 6 is horizontally arranged in the latter half of the outlet 8 side in the transport direction of the object W to be inspected. The upstream conveyor 5 and the downstream conveyor 6 are placed on the upper surface of the housing 2 that partitions the lower part of the internal space S so that the upstream conveyor 5 and the downstream conveyor 6 are located substantially on the same surface with a gap 10 of a predetermined dimension. ing. The object W to be inspected placed on the upstream conveyor 5 from the inlet 7 is conveyed in the internal space S by the upstream conveyor 5, transfers to the downstream conveyor 6 over the gap 10, is conveyed downstream, and is transported from the outlet 8 to the casing. It is sent out of the body 2.

The upstream conveyor 5 and the downstream conveyor 6 are a pair of side plates locked so that their positions and postures can be adjusted via a locking structure (not shown) with respect to the side plates 11 connected to the housing 2 below. 12, 12, a pedestal 13 which is a conveyor mounting member attached to the side plates 12 and 12, and a pair of rollers rotatably mounted on one end and the other end of each pedestal 13 in the transport direction. It has a driven roller 14 and a driving roller 15, a belt 16 hung around the driven roller 14 and the driving roller 15, and a motor (not shown) for driving the driving roller 15. Here, a pair of side pieces are formed on the pedestal 13, and the pair of side pieces of the pedestal 13 are attached to the pair of side plates 12 and 12 to form a conveyor unit. In the upstream conveyor 5, the upstream roller is the driving roller 15, and the downstream roller is the driven roller 14. Further, in the downstream conveyor 6, the upstream roller is the driven roller 14, and the downstream roller is the driving roller 15.

Since the upstream conveyor 5 and the downstream conveyor 6 are configured as a conveyor unit composed of a plurality of constituent parts, they can be easily attached to and detached from the housing 2. That is, at the time of cleaning or maintenance, if the lid 9 on the front surface of the housing 2 is opened to access the internal space S, the lid 9 can be easily removed from the housing 2 and carried out of the housing 2 for cleaning. It is easy to maintain and reattach.

The article inspection device 1 according to the present embodiment includes an electromagnetic wave irradiation space 17 (see FIG. 5) in the gap 10. The upstream side conveyor 5 and the downstream side conveyor 6 are divided so as to sandwich the electromagnetic wave irradiation space 17. The upstream conveyor 5 and the downstream conveyor 6 pass the object W to be inspected through the electromagnetic wave irradiation space 17 and convey the object W.

The article inspection device 1 is provided below the electromagnetic wave generation unit 18 (see FIG. 1) that irradiates the electromagnetic wave irradiation space 17 with electromagnetic waves from above and the electromagnetic wave generation unit 18 on the opposite side of the electromagnetic wave irradiation space 17. An electromagnetic wave detection unit 19 for detecting an electromagnetic wave applied to the inspection object W is provided.

The electromagnetic wave generation unit 18 generates, for example, X-rays, and irradiates the generated X-rays toward the electromagnetic wave detection unit 19. The electromagnetic wave generating unit 18 irradiates an electromagnetic wave through a long hole (slit). The irradiated electromagnetic wave 20 irradiated through the slit has, for example, a rectangular screen shape shown in FIG. 1, but when the electromagnetic wave is X-rays, the irradiated electromagnetic wave 20 has a substantially triangular screen shape.

The electromagnetic wave detection unit 19 includes a line sensor in which a large number of light receiving elements are arranged in the width direction of the upstream conveyor 5 and the downstream conveyor 6. The electromagnetic wave detection unit 19 is arranged below the electromagnetic wave irradiation space 17 so as to be covered with the flat upper surface of the detection unit accommodating the housing 2. A cover plate having slits, which are light-transmitting holes through which electromagnetic waves pass, is attached to the upper surface of the detection unit by, for example, a double-sided adhesive sheet.

By the way, in the upstream conveyor 5 and the downstream conveyor 6, only the upper surface of the circumferential surface of the endless belt 16 hung on the driven roller 14 and the driving roller 15 is the mounting surface 21 and 22 on which the object W to be inspected is placed. It becomes. When the upstream conveyor 5 and the downstream conveyor 6 are driven, their respective mounting surfaces 21 and 22, which are part of the circumferential surface, move from the upstream side to the downstream side. Therefore, the object W to be inspected on the mounting surface 21 of the upstream conveyor 5 can transfer to the mounting surface 22 of the downstream conveyor 6 by passing through the gap 10.

A gap 10 including a substantially drum-shaped space portion between the mounting surfaces 21 and 22 at the upstream end of the upstream conveyor 5 and the downstream end of the downstream conveyor 6 and the belt facing surfaces curved along the rollers 14 and 14. At least a pair of guide members 23 that support the lower surface of the object to be inspected W when connecting to the gap 10 are arranged in. The gap 10 includes the above-mentioned electromagnetic wave irradiation space 17 in the central portion in the transport direction. The pair of guide members 23 have the same height as the mounting surfaces 21 and 22, and are arranged so as to sandwich the electromagnetic wave irradiation space 17 between the upstream side and the downstream side in the transport direction in the gap 10.

Further, each guide member 23 is formed to have a smaller diameter than the driven roller 14 and the driving roller 15. In the present embodiment, the guide member 23 is a round bar as described later, but in the case of other shapes, the circumscribed circle of the cross-sectional shape is formed to have a smaller diameter than the driven roller 14 and the driving roller 15. Will be done.

The guide member 23 is arranged in the gap 10 so that the axis is in the same direction as the driven roller 14 and the driving roller 15. Each guide member 23 has a convex curved surface whose axial cross section projects upward.

The guide member 23 is a pedestal that is at least one of the upstream conveyor 5 and the downstream conveyor 6 so that the generatrix at the top of the convex curved surface matches the height of the mounting surface 21 of the belt 16. It is attached to 13. That is, the guide member 23 is integrally attached to the pedestal 13.

In the present embodiment, the guide member 23 has a circular cross section orthogonal to the axis. That is, the guide member 23 is formed of a round bar or a round pipe. By forming the guide member 23 into a round bar, a part of the outer peripheral surface forms the top of a convex curved surface whose outer peripheral surface is continuous in the axial direction. The cross-sectional shape and support structure of the guide member 23 are not limited to this. For example, when the guide member 23 uses a square bar, it can be similarly used as the guide member 23 having the present configuration as long as the corners are chamfered to form a convex curved surface.

Both ends of the pair of guide members 23 are fixed by means such as welding by a pair of support plates 24 at positions sandwiching the electromagnetic wave irradiation space 17. Each support plate 24 is attached to the arm plate 25. The arm plate 25 is attached to the pedestal 13.

FIG. 3 is an exploded perspective view of a guide member mounting portion 45 showing mounting of the pair of guide members 23 on the pedestal 13.
In the guide member mounting portion 45, the position of the guide member 23 is fixed by a pair of support plates 24 and an arm plate 25 that support the guide member 23. The support plate 24 is formed in a rectangular shape that is long in the vertical direction, and the shaft ends of the pair of guide members 23 are fixed and supported on the upper portion thereof. A screw hole 26 for a vertical adjustment bolt is formed in the central portion of the support plate 24. A protrusion 27 is projected from the support plate 24 below the screw hole 26 for the vertical adjustment bolt.

The arm plate 25 is formed in a rectangular shape that is long in the transport direction. Long vertical holes 28 are formed at the end of the arm plate 25 on the downstream side in the transport direction. A vertical adjustment bolt 29 is inserted through the elongated hole 28. The vertical adjustment bolt 29 inserted through the elongated hole 28 is screwed into the vertical adjustment bolt screw hole 26 of the support plate 24. Further, in the arm plate 25, an inverted U-shaped upper and lower guide groove 30 is formed below the elongated hole 28. The protrusion 27 of the support plate 24 engages with the upper and lower guide grooves 30.

At the end of the arm plate 25 on the upstream side in the transport direction, a horizontal U-shaped front-rear guide groove 31 long in the transport direction is formed in two upper and lower stages. A fixing bolt 32 is inserted into each of the front and rear guide grooves 31. The fixing bolt 32 is screwed into the fixing screw hole 33 formed in the pedestal 13. Further, an inverted L-shaped front-rear guide groove 34 is formed in the central portion of the arm plate 25. The front-rear guide groove 34 engages with the shaft end portion 14a of the driven roller 14.

FIG. 4 is an explanatory view at the time of adjusting the guide member mounting portion 45.
The guide member mounting portion 45 moves the arm plate 25 in the transport direction with respect to the pedestal 13, and moves the support plate 24 in the vertical direction with respect to the arm plate 25 so that the guide member 23 can be positioned and adjusted. .. The front-rear position (transportation direction position) of the guide member 23 is adjusted by moving the front-rear guide groove 31 with respect to the fixing bolt 32 temporarily fixed to the pedestal 13 and moving the front-rear guide groove 34 with respect to the shaft end portion 14a. Will be done. Since the front-rear guide groove 34 is engaged with the shaft end portion 14a, the arm plate 25 can maintain the height position and can position the front-rear position. The arm plate 25 whose front-rear position has been adjusted is fixed to the pedestal 13 by the fixing bolt 32. Further, by moving the vertical adjustment bolt 29 temporarily fixed to the support plate 24 with respect to the elongated hole 28 and moving the protrusion 27 of the support plate 24 with respect to the vertical guide groove 30 of the arm plate 25, the guide member 23 The vertical position is adjusted. The support plate 24 whose vertical position has been adjusted is fixed to the arm plate 25 by the vertical adjustment bolts 29. As a result, the positioning of the guide member 23 in the guide member mounting portion 45 is completed.

FIG. 5 is an explanatory diagram during operation of the connecting portion.
The guide member 23 that has been positioned in the front-rear direction is arranged so as to sandwich the electromagnetic wave irradiation space 17 between the upstream side and the downstream side in the transport direction. Further, in the guide member 23 whose vertical positioning is completed, the generatrix at the top of the convex curved surface is arranged on the extension plane of the mounting surfaces 21 and 22 on the respective belts 16 of the upstream conveyor 5 and the downstream conveyor 6. Ru. That is, the lower surface of the object W to be inspected when connecting to the connecting portion is in contact with a pair of guide members 23 arranged on the same extension plane as the mounting surface 21 of the upstream conveyor 5 and the downstream conveyor 6.

Next, the operation of the above configuration will be described.
In the article inspection device 1 according to the present embodiment, when the object W to be transported by the upstream conveyor 5 reaches the downstream end of the transport, the front portion in the transport direction enters the gap 10. The front portion of the object W to be inspected that has entered the gap 10 in the transport direction is transferred to the guide member 23 arranged on the upstream side of the electromagnetic wave irradiation space 17. Since the guide member 23 has a convex curved surface, the inspected object W can be smoothly transferred.

The inspected object W transferred to the guide member 23 on the upstream side is further pushed in the conveying direction due to friction between the rear portion of the inspected object W in the conveying direction and the mounting surface 21. When the object W to be inspected moves on the guide member 23 and moves in the transport direction, the lower surface of the object W makes line contact with the convex curved surface of the guide member 23, so that the contact resistance is reduced as compared with the case of surface contact by the transfer plate of the conventional configuration. Therefore, the transport resistance is suppressed as compared with the conventional configuration.

As a result, the article inspection device 1 can enable smooth transportation while maintaining the posture of the small-sized and lightweight inspected object W, which is difficult to handle with the conventional configuration using the delivery plate.

The object W to be inspected supported by the guide member 23 on the upstream side is further transported so that the front portion in the transport direction passes through the electromagnetic wave irradiation space 17. The front portion of the object W to be inspected that has passed through the electromagnetic wave irradiation space 17 transfers to the guide member 23 on the downstream side opposite to the guide member 23 on the upstream side across the electromagnetic wave irradiation space 17.

Since the guide member 23 on the downstream side also has a convex curved surface, the object W to be inspected can be smoothly transferred. When the object W to be inspected transferred to the guide member 23 on the downstream side is further pushed in the transport direction, the front portion in the transport direction is transferred to the mounting surface 21 of the downstream conveyor 6. The object W to be inspected, whose front portion in the transport direction has moved to the mounting surface 22 of the downstream conveyor 6, is then pulled to the downstream side by friction with the mounting surface 22 of the downstream conveyor 6 to the downstream conveyor 6. Will be reprinted.

When the object W to be inspected passes through the connecting portion provided with the guide member 23, the contact resistance is reduced as compared with the conventional configuration, so that the connecting object W can be smoothly connected. Therefore, the posture of the object W to be inspected is less likely to change in the electromagnetic wave irradiation space 17.

Since the irradiation electromagnetic wave 20 passes between the pair of guide members 23 as a gap, scratches and foreign matter do not adhere to the pair of guide members 23 as in the conventional transfer plate. Therefore, the article inspection device 1 does not need to perform complicated image processing for removing scratches and deposits as noise from the image data, which has been conventionally performed when the transfer plate is used, and detects only the object W to be inspected. it can.

Further, the use of the guide member 23 provided with the convex curved surface also causes a secondary effect of making the inspected object W less likely to be damaged. That is, in a conventional delivery plate or a member composed of sheet metal processing instead of a convex curved surface, there is a risk that the end face or edge portion of the sheet metal part may be sharpened, and there is a risk that the object W to be inspected may be damaged. It was. On the other hand, according to the article inspection device 1 of the present invention, since the generatrix of the convex curved surface only comes into contact with the inspected object W, the possibility of damaging the inspected object W can be significantly reduced.

Further, in the article inspection device 1, the guide member 23 on the upstream side and the guide member 23 on the downstream side sandwiching the electromagnetic wave irradiation space 17 are attached to the pedestal 13 (conveyor mounting member) of the upstream conveyor 5. Therefore, if the upstream conveyor 5 is positioned with respect to the mounting surface 21 by adjusting the support plate 24 and the arm plate 25, the upstream conveyor 5 and the downstream conveyor 6 have the same mounting surface 21. By mounting as a flat surface, the top of the guide member 23 is positioned and arranged with both mounting surfaces 21 and 22.

That is, by arranging and attaching the upstream conveyor 5 and the downstream conveyor 6 at the regular positions, the guide member 23 is also arranged at the regular position and the installation is completed. Therefore, it is possible to easily reassemble the conveyor 4 at the time of cleaning or maintenance.

Further, in the article inspection device 1, the guide member 23 is a round bar having a circular cross section orthogonal to the axis line, so that contact resistance with the object W to be inspected is suppressed, transfer resistance is reduced, and smoothness is achieved. It is possible to make a connection and more reliably suppress a change in the posture of the object W to be inspected.

The guide member 23 may be rotatably supported around an axis. That is, the pair of guide members 23 are rotatably supported around the axis like a small-diameter roller by a pair of support plates 24 at positions sandwiching the electromagnetic wave irradiation space 17 at both ends via rolling bearings or the like. Is also good. With this rotation support structure, the article inspection device 1 can further reduce the increase in contact resistance by rotating the guide member 23 when the object W to be inspected is transferred. As a result, the transport resistance between the guide member 23 and the object W to be inspected can be further reduced to enable smoother connection, and the posture change of the object W to be inspected can be suppressed more reliably.

Next, a modified example of the article inspection device 1 according to the above-described embodiment will be described.
FIG. 6 is a side view of a main part of the article inspection device 1 according to a modified example in which the guide member 23 is attached to each of the upstream side conveyor 5 and the downstream side conveyor 6.
In the article inspection device 1 according to this modification, the upstream guide member 23A and the downstream guide member 23B sandwiching the electromagnetic wave irradiation space 17 are attached to the upstream conveyor 5 and the downstream conveyor 6, respectively. .. That is, both ends of the upstream guide member 23A are attached to the conveyor attachment member 37 of the upstream conveyor 5 by a pair of arm members 35. Both ends of the downstream guide member 23B are attached to the conveyor attachment member 37 of the downstream conveyor 6 by a pair of arm members 36. The upstream arm member 35 and the downstream arm member 36 have their base ends fixed to, for example, a pedestal 37, which is a conveyor mounting member, and their tips fix the ends of the guide members 23A and 23B.

According to the article inspection device 1 according to this modification, if the upstream conveyor 5 and the downstream conveyor 6 are mounted with their respective mounting surfaces 21 and 22 arranged on the same plane, the guide members 23A and 23B, respectively. The top of the wall is also positioned on the mounting surfaces 21 and 22. That is, if the upstream conveyor 5 and the downstream conveyor 6 are attached to the regular positions of the article inspection device 1, the guide members 23A and 23B are also mounted at the regular positions at the same time. Therefore, it is possible to easily reassemble the conveyor 4 at the time of cleaning or maintenance.
The arm members 35 and 36 may also be provided with a mechanical portion for adjustment, that is, an elongated hole, a guide groove, a bolt, or the like, as in the above-described embodiment.

FIG. 7A is a side view of a main part of the article inspection device 1 according to a modified example in which the guide member 38 is formed in a semicircular cross section, and FIG. 7B is an article according to a modified example in which the guide member 39 is formed in a semicircular shape. It is a side view of the main part of inspection apparatus 1.
As shown in FIG. 7A, the article inspection device 1 may form the guide member 38 with a bar having a semicircular cross section. The guide member 38 can be supported by the support plate 24, the arm plate 25, and the arm member 35. Both ends of each guide member 38 can be fixed to the support plate 24 or the arm member 35 by welding.

According to the article inspection device 1, since the guide member 38 is formed of a bar having a semicircular cross section, it can be made smaller than a bar having a circular cross section. That is, since the guide member 38 does not have a circular lower semicircular portion, it is possible to prevent interference with the belt 16 by that amount, and it is possible to cope with a narrower gap 10.

Further, as shown in FIG. 7B, the article inspection device 1 may form the guide member 39 in a semi-cylindrical shape. The guide member 39 can be supported by the support plate 24, the arm plate 25, and the arm member 35. Both ends of each guide member 39 can be fixed to the support plate 24 or the arm member 35 by welding.

According to the article inspection device 1, since the guide member 39 is formed in a semi-cylindrical shape, it can be made smaller and lighter than a bar having a circular cross section, and can be used for cleaning and maintenance. You can easily work on time.

Therefore, according to the article inspection device 1 according to the present embodiment, when the inspected object W transfers between the upstream side conveyor 5 and the downstream side conveyor 6, a smooth transfer is possible, and the posture change of the inspected object W. Can be suppressed.

The present invention is not limited to the above embodiment. For example, in the above embodiment, the article inspection device irradiates the object to be inspected with X-rays which are electromagnetic waves, and the X-rays transmitted through the object to be inspected. However, the article inspection apparatus according to the present invention irradiates light which is an electromagnetic wave and detects the light transmitted through the object to be inspected or the projected light. Even if the device detects foreign matter or defective products, the same effect as described above can be obtained.

Further, in the above-described embodiment, the configuration in which the guide member is supported by the support plate, the arm plate, and the conveyor mounting member such as the pedestal via the arm member has been described, but the support structure is not limited thereto. .. The guide member may be fixed to the housing, for example.

Further, in the above-described embodiment, the case where a pair of guide members are arranged across the electromagnetic wave irradiation space has been described as an example, but the guide members are provided on one side of the electromagnetic wave irradiation space according to the gap and the size of the object to be inspected. A plurality of lines such as two or three may be arranged, and for example, a combination of one on the upstream side and two on the downstream side may be used.

1 ... Article inspection device 5 ... Upstream side conveyor 6 ... Downstream side conveyor 10 ... Gap 13 ... Conveyor mounting member (cradle)
14 ... Roller (driven roller)
15 ... Roller (drive roller)
16 ... Belt 17 ... Electromagnetic wave irradiation space 21 and 22 ... Mounting surfaces 23, 23A, 23B ... Guide member 37 ... Conveyor mounting member W ... Object to be inspected

Claims (3)

An electromagnetic wave irradiation space (17) in which electromagnetic waves are radiated from the electromagnetic wave generator (18) toward the electromagnetic wave detection unit (19), and
An upstream conveyor (5) in which a belt (16) is hung on at least a pair of rollers (14, 15) and the upper surface serves as a mounting surface (21) for transporting an inspected object (W).
A belt is hung on at least a pair of other rollers so that the upper surface becomes a mounting surface (22) on the same plane as the above-described mounting surface, and is divided from the upstream conveyor with a gap (10) including the electromagnetic wave irradiation space. The downstream conveyor (6), in which the object to be inspected passes through the gap and transfers to the above-mentioned mounting surface, and
A pair facing each other across the electromagnetic wave irradiation space are arranged in the gap so that the electromagnetic wave can pass through , each of which is formed to have a smaller diameter than the roller, and the axis is in the same direction as the roller so that the cross section orthogonal to the axis is formed. A guide member (23) made of a bar having a convex curved surface protruding upward, and
An article inspection device characterized by comprising. The article inspection device according to claim 1.
The guide member (23A) arranged on the upstream side of the electromagnetic wave irradiation space of the guide member is provided on the upstream side conveyor, and is arranged so that the generatrix at the top of the convex curved surface coincides with the above-mentioned mounting surface.
The guide member (23B) arranged on the downstream side of the electromagnetic wave irradiation space of the guide member is provided on the downstream side conveyor, and is arranged so that the generatrix at the top of the convex curved surface coincides with the above-mentioned mounting surface. An article inspection device characterized by being present. The article inspection device 1 according to claim 1 or 2.
The guide member is an article inspection apparatus, wherein the axis perpendicular cross-section is circular.

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