JP2018155560A - Article inspection device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an article inspection device with which it is possible to easily attach and remove a conveyance belt.SOLUTION: An X-ray inspection device comprises a conveyance unit 5 for conveying an article, and a control unit for inspecting the article carried by the conveyance unit 5. The conveyance unit 5 comprises a plurality of conveyance rollers 12, a conveyance belt 13 fitted to the plurality of conveyance rollers 12, and a movement mechanism 20 for moving at least one conveyance roller 12, out of the plurality of conveyance rollers 12, selectively to a belt attachment position where the conveyance belt 13 is attached and a belt attachment-detachment position where the conveyance belt 13 is attached and detached. The movement mechanism 20 includes an operation unit 23 for selectively moving the one conveyance roller 12 to the belt attachment position and the belt attachment-detachment position. The operation unit 23 is arranged on one side in the axial direction of the one conveyance roller 12.SELECTED DRAWING: Figure 3

Description

  The present invention relates to an article inspection apparatus.

  An article inspection apparatus comprising: a conveyance unit that conveys an article; and an inspection unit that inspects an article conveyed by the conveyance unit, wherein the conveyance unit includes a plurality of conveyance rollers and a conveyance unit that spans the plurality of conveyance rollers. What has a belt is known. In the conveyance section of such an article inspection apparatus, an adjustment mechanism for adjusting the tension of the conveyance belt may be provided on both sides in the axial direction of the conveyance roller (see, for example, Patent Document 1).

Japanese Patent No. 3526263

  In the article inspection apparatus as described above, it is convenient that the conveyor belt can be attached and detached from the viewpoint of improving maintainability such as ease of cleaning. However, when the adjustment mechanisms as described above are provided on both sides in the axial direction of the transport roller, it is difficult for the operator to access the adjustment mechanism on the back side as viewed from the operator. In particular, if the transport section has a large size, or if the adjustment mechanism is located in a housing (for example, a housing in which an X-ray inspection region is formed inside), The operator becomes less accessible to the adjustment mechanism.

  An object of the present invention is to provide an article inspection apparatus in which a conveyor belt can be easily attached and detached.

  An article inspection apparatus according to the present invention includes a conveyance unit that conveys an article, and an inspection unit that acquires an inspection result of an article conveyed by the conveyance unit. The conveyance unit includes a plurality of conveyance rollers and a plurality of conveyance rollers. And a moving mechanism for selectively moving at least one of the plurality of conveying rollers to a first position where the conveying belt is attached and a second position where the conveying belt is attached or detached. The moving mechanism includes an operation unit for selectively moving one transport roller to the first position and the second position, and the operation unit is on one side in the axial direction of the one transport roller. Is arranged.

  In this article inspection apparatus, a first position where the conveyor belt is attached and a second position where the conveyor belt is attached / detached when the operator operates an operation unit arranged on one side in the axial direction of one conveyor roller. One transport roller can be selectively moved. Therefore, according to this article inspection apparatus, the conveyor belt can be easily attached and detached.

  In the article inspection apparatus of the present invention, the second position may be a position on one side in the axial direction relative to the first position. According to this, since one conveyance roller moves to the operation unit side, that is, the operator side, when the conveyance belt is attached / detached, the conveyance belt can be attached / detached more easily.

  In the article inspection apparatus of the present invention, one transport roller may be a driven roller. According to this, since the drive motor is not connected to one conveyance roller, the structure of the moving mechanism can be simplified.

  In the article inspection apparatus according to the present invention, one transport roller includes a roller body and a support shaft that rotatably supports the roller body, and the moving mechanism has both ends of the support shaft disposed at the first position. A pair of first surfaces, a pair of second surfaces on which both ends of the support shaft are arranged at the second position, and a pair of third surfaces connecting each of the pair of first surfaces and each of the pair of second surfaces And a pressing portion that selectively presses and releases the support shaft from the second position side to the first position side in conjunction with the operation of the operation portion. According to this, the selective movement of one transport roller to the first position and the second position can be reliably performed by the operation of the operation unit arranged on one side.

  In the article inspection apparatus of the present invention, a roller may be provided at each of both ends of the support shaft. According to this, the selective movement of one transport roller to the first position and the second position can be smoothly performed by the operation of the operation unit arranged on one side.

  In the article inspection apparatus of the present invention, the width of the conveyor belt may be 550 mm or more. In this case, since it becomes more difficult for the operator to access the back side of the transport unit as viewed from the operator, the first position and the first position are determined by the operation of the operation unit disposed on one side (in this case, the front side as viewed from the operator). The ability to selectively move one transport roller to the second position is particularly convenient.

  The article inspection apparatus according to the present invention may further include a housing in which an inspection region in which an inspection of the article is performed is provided, and the inspection unit may acquire an inspection result based on an X-ray transmission image of the article. . In this case, since it becomes more difficult for the operator to access the back side of the transport unit as viewed from the operator, the first position and the first position are determined by the operation of the operation unit disposed on one side (in this case, the front side as viewed from the operator). The ability to selectively move one transport roller to the second position is particularly convenient.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the goods inspection apparatus which can attach or detach a conveyance belt easily.

It is a lineblock diagram of an X-ray inspection device which is an article inspection device of one embodiment. It is a one part perspective view of the conveyance part shown by FIG. FIG. 3 is a plan view of a part of the transport unit shown in FIG. 2. FIG. 3 is a plan view of a part of the transport unit shown in FIG. 2. FIG. 3 is a plan view of a part of the transport unit shown in FIG. 2.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In addition, in each figure, the same code | symbol is attached | subjected to the same or equivalent part, and the overlapping description is abbreviate | omitted.

  As shown in FIG. 1, an X-ray inspection apparatus (article inspection apparatus) 1 includes an apparatus main body 2, support legs 3, a shield box (housing) 4, a transport unit 5, and an X-ray irradiation unit 6. , An X-ray detection unit 7, a display operation unit 8, and a control unit 10. The X-ray inspection apparatus 1 generates an X-ray transmission image of the article G while conveying the article G, and inspects the article G based on the X-ray transmission image (for example, storage number inspection, foreign matter mixing inspection, missing item inspection). , Crack inspection etc.). The article G before inspection is carried into the X-ray inspection apparatus 1 by the carry-in conveyor 51. The inspected article G is unloaded from the X-ray inspection apparatus 1 by the unloading conveyor 52. The article G determined to be defective by the X-ray inspection apparatus 1 is sorted out of the production line by a sorting apparatus (not shown) arranged downstream of the carry-out conveyor 52. The article G determined to be non-defective by the X-ray inspection apparatus 1 passes through the sorting apparatus as it is.

  The apparatus main body 2 accommodates the control unit 10 and the like. The support leg 3 supports the apparatus main body 2. The shield box 4 is provided in the apparatus main body 2. The shield box 4 prevents X-ray leakage to the outside. Inside the shield box 4, an inspection region R in which an inspection of the article G by X-rays is performed is provided. In the shield box 4, a carry-in port 4a and a carry-out port 4b are formed. The article G before the inspection is carried into the inspection region R from the carry-in conveyor 51 through the carry-in entrance 4a. The inspected article G is carried out from the inspection region R to the carry-out conveyor 52 via the carry-out port 4b. Each of the carry-in entrance 4a and the carry-out exit 4b is provided with an X-ray shielding curtain (not shown) that prevents X-ray leakage.

  The transport unit 5 is disposed in the shield box 4. The transport unit 5 transports the article G along the transport direction A from the transport inlet 4a to the transport outlet 4b via the inspection region R. The transport unit 5 is, for example, a belt conveyor that is stretched between the carry-in port 4a and the carry-out port 4b.

  The X-ray irradiation unit 6 is disposed in the shield box 4. The X-ray irradiation unit 6 irradiates the article G conveyed by the conveyance unit 5 with X-rays. The X-ray irradiation unit 6 includes, for example, an X-ray tube that emits X-rays and a collimator that spreads the X-rays emitted from the X-ray tube in a fan shape in a plane perpendicular to the transport direction A.

  The X-ray detector 7 is disposed in the shield box 4. The X-ray detection unit 7 detects X-rays that have passed through the article G. The X-ray detection unit 7 is configured as a line sensor, for example. Specifically, the X-ray detection unit 7 includes a plurality of photodiodes arranged one-dimensionally along a horizontal direction perpendicular to the transport direction A, and a scintillator disposed on the X-ray incident side with respect to each photodiode. And have. In this case, in the X-ray detection unit 7, X-rays incident on the scintillator are converted into light, and light incident on each photodiode is converted into an electric signal.

  The display operation unit 8 is provided in the apparatus main body 2. The display operation unit 8 displays various information and accepts input of various conditions. The display operation unit 8 is a liquid crystal display, for example, and displays an operation screen as a touch panel. In this case, the operator can input various conditions via the display operation unit 8.

  The control unit 10 is disposed in the apparatus main body 2. The control unit 10 controls the operation of each unit of the X-ray inspection apparatus 1. The control unit 10 includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like. A signal output from the X-ray detection unit 7 and subjected to A / D conversion is input to the control unit 10. The control unit 10 generates an X-ray transmission image of the article G based on the signal, and acquires an inspection result of the article G based on the X-ray transmission image. That is, the control unit 10 functions as an inspection unit that acquires the inspection result of the article G conveyed by the conveyance unit 5.

  As shown in FIGS. 2 and 3, the transport unit 5 includes a frame 11, a plurality of transport rollers 12, and a transport belt 13. The frame 11 is mounted in the shield box 4 (see FIG. 1). Each transport roller 12 is rotatably supported by the frame 11. The conveyor belt 13 is an endless belt and is laid on a plurality of conveyor rollers 12. The width of the conveyor belt 13 is 550 mm or more. 2 and 3 show the conveyance roller 12 arranged on the upstream side in the conveyance direction A among the plurality of conveyance rollers 12. The conveyance roller 12 is a driven roller.

  The transport roller 12 that is a driven roller has a roller body 12a and a support shaft 12b. The support shaft 12b supports the roller body 12a in a rotatable manner. A roller 14 is provided at each of both end portions 12c of the support shaft 12b. Each roller 14 is rotatable about the axis line perpendicular to both the axial direction of the conveying roller 12 (direction parallel to the axis L of the conveying roller 12) and the conveying direction A as a center line.

  The transport unit 5 further includes a moving mechanism 20. The moving mechanism 20 selectively moves the transport roller 12 as a driven roller to a belt attachment position (first position) and a belt attachment / detachment position (second position). The belt mounting position is a position where the transport belt 13 is mounted (a position where the transport unit 5 is operated). The belt attaching / detaching position is a position where the conveying belt 13 is attached / detached. The belt attachment / detachment position (see FIG. 5) is a position on the near side (one side) in the axial direction of the transport roller 12 and the downstream side in the transport direction A (center side of the transport unit 5) with respect to the belt mounting position. The near side is a door (a door for an operator to access the inside of the shield box 4) provided in the shield box 4 (see FIG. 1).

  The moving mechanism 20 includes support parts 21 and 22, an operation part 23, a bracket 24, a link 25, a pressing part 26, a guide part 27, and an adjustment part 28. In the moving mechanism 20, the configuration other than the support unit 22 (that is, the support unit 21, the operation unit 23, the bracket 24, the link 25, the pressing unit 26, the guide unit 27, and the adjustment unit 28) is in front of the transport roller 12 in the axial direction. Arranged on the side.

  The support portion 21 is formed with a first surface 21a, a second surface 21b, and a third surface 21c. The support portion 22 is formed with a first surface 22a, a second surface 22b, and a third surface 22c. The first surface 21a and the first surface 22a are surfaces on which both end portions 12c of the support shaft 12b are disposed at the belt mounting position. The first surface 21a is a surface perpendicular to the axial direction of the transport roller 12, and faces the back side (the side opposite to the near side) in the axial direction. The first surface 22a is a surface perpendicular to the transport direction A and faces the upstream side in the transport direction A. The second surface 21b and the second surface 22b are surfaces on which both end portions 12c of the support shaft 12b are arranged at the belt attaching / detaching position (see FIG. 5). The second surface 21b is a surface perpendicular to the axial direction of the transport roller 12, and faces the back side in the axial direction. The second surface 22b is a surface perpendicular to the axial direction of the conveying roller 12, and faces the front side in the axial direction.

  In the support portion 21, the second surface 21 b is located on the near side in the axial direction of the transport roller 12 and on the downstream side in the transport direction A (center side of the transport portion 5) than the first surface 21 a. In the support portion 21, the third surface 21c connects the first surface 21a and the second surface 21b. In the support portion 22, the second surface 22 b is located on the near side in the axial direction of the transport roller 12 and on the downstream side in the transport direction A (center side of the transport portion 5) than the first surface 22 a. In the support portion 22, the third surface 22c connects the first surface 22a and the second surface 22b. The roller 14 provided at one of the both end portions 12c can go back and forth between the first surface 21a, the second surface 21b, and the third surface 21c in the support portion 21. The roller 14 provided on the other of the both end portions 12c can go back and forth between the first surface 22a, the second surface 22b, and the third surface 22c in the support portion 22.

  The operation unit 23 is a lever-like member for selectively moving the transport roller 12 as a driven roller to the belt attachment position and the belt attachment / detachment position. A base end portion 23 a of the operation unit 23 is rotatably supported by a bracket 24 attached to the frame 11. The pressing portion 26 is a rod-shaped member extending along the transport direction A. The pressing portion 26 is guided so as to be movable along the conveyance direction A by a guide portion 27 attached to the frame 11. The distal end portion 26a of the pressing portion 26 is in contact with the support shaft 12b of the transport roller 12 at the belt mounting position. A proximal end portion 26 b of the pressing portion 26 is connected to an intermediate portion of the operation portion 23 via a link 25. One end portion 25 a of the link 25 is rotatably attached to an intermediate portion of the operation unit 23. The other end portion 25 b of the link 25 is rotatably attached to the proximal end portion 26 b of the pressing portion 26. The adjustment unit 28 is provided at the proximal end portion 26 b of the pressing unit 26. The adjustment part 28 is a structure for an operator to adjust the protrusion amount of the front-end | tip part 26a of the press part 26. FIG.

  In the moving mechanism 20 configured as described above, when the operator rotates the operation unit 23 in a closed state toward the front, the pressing unit 26 is moved in the transport direction A as shown in FIGS. It is moved to the downstream side (the center side of the transport unit 5). As a result, the operator can move the transport roller 12 at the belt mounting position shown in FIG. 3 to the belt attaching / detaching position shown in FIG. 5 through the state shown in FIG. Specifically, the roller 14 provided on one of the both end portions 12c moves from the first surface 21a to the second surface 21b via the third surface 21c in the support portion 21, and is provided on the other end of the both end portions 12c. The roller 14 thus moved moves from the first surface 22 a to the second surface 22 b via the third surface 22 c in the support portion 22. At the belt attaching / detaching position shown in FIG. 5, the tension of the conveying belt 13 is loosened, so that the operator can remove the conveying belt 13 from the conveying unit 5 to the near side.

  For example, after cleaning the removed transport belt 13, the operator attaches the transport belt 13 to the transport unit 5 from the front side. Then, when the operator rotates the operation unit 23 in the open state to the frame 11 side, as shown in FIG. Side). As a result, the conveying roller 12 at the belt attaching / detaching position shown in FIG. 5 automatically moves to the belt attaching position shown in FIG. 3 through the state shown in FIG. Specifically, the roller 14 provided on one of the both end portions 12c moves from the second surface 21b to the first surface 21a via the third surface 21c in the support portion 21, and is provided on the other end of the both end portions 12c. The roller 14 thus moved moves from the second surface 22b to the first surface 22a via the third surface 22c in the support portion 22. In this way, the pressing unit 26 selectively presses and releases the support shaft 12b from the belt mounting position side to the belt attaching / detaching side in conjunction with the operation of the operation unit 23.

  As described above, in the X-ray inspection apparatus 1, the operator operates the operation unit 23 disposed on the near side in the axial direction of one transport roller 12, so that the one belt mounting position and the belt attaching / detaching position are set to the one. The conveyance roller 12 can be selectively moved. Therefore, according to the X-ray inspection apparatus 1, the transport belt 13 can be easily attached and detached.

  Further, in the X-ray inspection apparatus 1, the belt attachment / detachment position is a position on the near side in the axial direction of one transport roller 12 with respect to the belt attachment position. Accordingly, when the transport belt 13 is attached or detached, the one transport roller 12 moves to the operation unit 23 side, that is, the operator side, so that the transport belt 13 can be attached or detached more easily.

  In the X-ray inspection apparatus 1, one transport roller 12 is a driven roller. Thereby, since the drive motor is not connected to the said one conveyance roller 12, the structure of the moving mechanism 20 can be simplified.

  In the X-ray inspection apparatus 1, the moving mechanism 20 is linked to the operation of the support units 21 and 22 that support the support shaft 12 b of one transport roller 12 and the operation unit 23, and from the belt attachment / detachment position side to the belt attachment position. And a pressing portion 26 that selectively presses and releases the support shaft 12b to the side. Thereby, the selective movement of the one transport roller 12 to the belt attachment position and the belt attachment / detachment position can be reliably performed by the operation of the operation unit 23 arranged on the front side.

  Moreover, in the X-ray inspection apparatus 1, the roller 14 is provided in each of the both ends 12c of the support shaft 12b. Thereby, the selective movement of the one conveying roller 12 to the belt attachment position and the belt attachment / detachment position can be smoothly performed by the operation of the operation unit 23 arranged on the near side.

  Moreover, in the X-ray inspection apparatus 1, the width of the conveyance belt 13 is 550 mm or more. In this case, since it becomes more difficult for the operator to access the back side of the transport unit 5 when viewed from the operator, the operation to the belt mounting position and the belt attaching / detaching position is performed by operating the operation unit 23 disposed on the front side when viewed from the operator. The ability to selectively move one transport roller 12 is particularly convenient.

  In the X-ray inspection apparatus 1, an inspection region R in which an inspection of the article G by X-rays is performed is provided inside the shield box 4. That is, the transport unit 5 is disposed in the shield box 4. In this case, since it becomes more difficult for the operator to access the back side of the transport unit 5 when viewed from the operator, the operation to the belt mounting position and the belt attaching / detaching position is performed by operating the operation unit 23 disposed on the front side when viewed from the operator. The ability to selectively move one transport roller 12 is particularly convenient.

  Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment. For example, the moving mechanism 20 has another configuration as long as it can selectively move at least one of the plurality of transport rollers 12 to the belt attachment position and the belt attachment / detachment position. Also good.

  Further, the width of the conveyor belt 13 may be less than 550 mm. Further, the moving mechanism 20 may be applied to the driving roller among the plurality of conveying rollers 12.

  The present invention is also applicable to an article inspection apparatus that performs inspections other than X-ray inspection. Examples of such an article inspection apparatus include a mass inspection apparatus that performs mass inspection, an optical inspection apparatus that performs optical inspection (for example, inspection of biting using light transmission), or metal inspection (for example, magnetic field and There are metal inspection apparatuses and the like that perform inspection of metal foreign objects using interaction with metal.

  DESCRIPTION OF SYMBOLS 1 ... X-ray inspection apparatus (article inspection apparatus), 4 ... Shield box (housing | casing), 5 ... Conveyance part, 10 ... Control part (inspection part), 12 ... Conveyance roller, 12a ... Roller main body, 12b ... Support shaft, 12c ... Both ends, 13 ... Conveyor belt, 14 ... Roller, 20 ... Moving mechanism, 21, 22 ... Supporting part, 21a, 22a ... First surface, 21b, 22b ... Second surface, 21c, 22c ... Third surface, 23 ... Operation part, 26 ... Press part, G ... Article, R ... Inspection area.

Claims (7)

A transport unit for transporting articles;
An inspection unit for obtaining an inspection result of the article conveyed by the conveyance unit,
The transport unit is
A plurality of conveying rollers;
A conveyor belt spanning the plurality of conveyor rollers;
A moving mechanism that selectively moves at least one of the plurality of transport rollers to a first position where the transport belt is mounted and a second position where the transport belt is attached and detached. ,
The moving mechanism includes an operation unit for selectively moving the one transport roller to the first position and the second position,
The said operation part is an article inspection apparatus arrange | positioned at the one side in the axial direction of said one conveyance roller.   The said 2nd position is an article inspection apparatus of Claim 1 which is a position of the one side in the said axial direction rather than the said 1st position.   The article inspection apparatus according to claim 1, wherein the one transport roller is a driven roller. The one transport roller is
The roller body,
A support shaft that rotatably supports the roller body,
The moving mechanism is
A pair of first surfaces on which both ends of the support shaft are disposed at the first position, a pair of second surfaces on which the both ends of the support shaft are disposed at the second position, and the pair of first surfaces And a support portion formed with a pair of third surfaces that connect each of the second surfaces and each of the pair of second surfaces;
The press part which selectively presses and releases the support shaft from the second position side to the first position side in conjunction with the operation of the operation part. The article inspection apparatus according to claim 1.   The article inspection apparatus according to claim 4, wherein a roller is provided at each of the both end portions of the support shaft.   The width | variety of the said conveyance belt is an article inspection apparatus as described in any one of Claims 1-5 which is 550 mm or more. Further comprising a housing in which an inspection area in which the inspection of the article is performed is provided;
The article inspection apparatus according to claim 1, wherein the inspection unit acquires the inspection result based on an X-ray transmission image of the article.

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