Sorting device

Abstract

To provide a distribution device which can prevent failure of an electric component due to water entering into a body of an arm driving device.SOLUTION: A distribution device includes: a distribution conveyor 3 which conveys an article; each of distribution arms 8, 9 which has a rotary shaft 10 which is arranged on a side of the distribution conveyor 3 and extends in a vertical direction and an arm section 11 which removes an article from the distribution conveyor 3 because the arm section is fixed to an upper end of the rotary shaft 10 and the rotary shaft 10 is rotated; and an arm driving device 12 which is arranged below the distribution conveyor 3 and is constituted by storing a drive section for rotating the rotary shaft 10 in a body 13 having a top surface plate 13a through which the rotary shaft 10 passes. In the arm driving device 12, an electric component to be a part of the drive section is separated from a bottom surface plate 13b of the body 13 and is arranged above the bottom surface plate 13b.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a sorting device used in a weight checker or the like. [Background technology]

[0002] For example, agricultural and marine products and other items are sorted into ranks according to their weight, and items of the same rank are packed into boxes or bags. In this way, weight sorters are used to sort items into ranks according to their weight.

[0003] A conventional weight checker, for example, includes a weighing conveyor that transports articles in one direction, and a sorting device downstream of the weighing conveyor that sorts articles according to the weight of the articles weighed on the weighing conveyor.

[0004] Patent Document 1 describes the configuration of a sorting device that has a first sorting arm that sorts underweight defective products and a second sorting arm that sorts overweight defective products on both the left and right sides (both outsides in the belt width direction) of a sorting conveyor (transport mechanism).The arm drive device is configured by providing air cylinders and the like for driving these first and second sorting arms in a single housing (referred to as "frame 62" in Patent Document 1). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2002-114366 A Summary of the Invention [Problem to be solved by the invention]

[0006] As in Patent Document 1, in a conventional sorting device, the housing of the arm drive device is arranged in a region that includes the entire area directly below the sorting conveyor in the belt width direction and spans both outside thereof.

[0007] The housing of such an arm drive device also contains electrical components such as solenoid valves for driving the air cylinders. If the items to be sorted are wet, such as fish, water adheres to the surface of the conveyor belt of the sorting conveyor, and when the conveyor belt turns over with the rotation of the conveyor belt, the water adhering to the surface falls onto the housing of the arm drive device. If the water that falls onto the housing infiltrates the housing and accumulates at the bottom due to deterioration of the housing over time, electrical components such as solenoid valves arranged at the bottom of the housing may break down.

[0008] The present invention has been made to solve the above-mentioned problems, and aims to provide a sorting device that can prevent damage to electrical components caused by water entering the housing of the arm drive device. [Means for solving the problem]

[0009] In order to achieve the above-mentioned object, a sorting device according to one embodiment of the present invention comprises a belt conveyor for transporting articles, a sorting arm arranged to the side of the belt conveyor and having a rotating shaft extending in an up-down direction and an arm portion fixed to the upper end of the rotating shaft and removing articles from the belt conveyor as the rotating shaft is rotated, and an arm drive device arranged below the belt conveyor and including a drive unit for rotating the rotating shaft housed within a housing having a top panel through which the rotating shaft passes, and the arm drive device has electrical components that are part of the drive unit arranged away from and above the bottom panel of the housing.

[0010] With this configuration, even if the items transported by the conveyor belt are wet items such as fish that adhere to the surface of the conveyor belt and fall from the belt when the surface is turned down, and water seeps into the housing due to deterioration of the housing over time and accumulates at the bottom inside the housing, the electrical components that are part of the drive unit are positioned away from the bottom plate of the housing and above the bottom plate, so the electrical components can be prevented from becoming submerged in water and breakdown of the electrical components can be prevented.

[0011] In addition, the drive unit housed in the housing may have a cylinder that rotates the rotating shaft forward and backward by the extension and retraction movement of a piston rod, and a solenoid valve, which is the electrical component that causes the cylinder to perform the extension and retraction movement of the piston rod, and the solenoid valve may be arranged above the cylinder.

[0012] The arm drive device may be disposed in a region extending from approximately directly below an edge of the belt of the belt conveyor that is closer to the pivot axis in a width direction of the belt toward a side of the belt conveyor.

[0013] According to this configuration, the arm drive device is arranged to avoid the central portion of the belt of the belt conveyor in the width direction and directly below the vicinity thereof, so that the amount of water that falls from the belt of the belt conveyor onto the housing of the arm drive device is reduced, and the amount of water that penetrates into the housing can be reduced, so that failure of electrical components can be further prevented. Also, since the arm drive device is arranged to avoid the central portion of the belt of the belt conveyor in the width direction and directly below the vicinity thereof, most of the dirt that adheres to the surface of the belt and falls from the belt when the surface turns downward falls onto the floor surface on which the sorting device is installed, making the floor surface easier to clean, and thus improving cleanability.

[0014] The housing of the arm drive device may be attached between a stand on which the belt conveyor is placed and a side frame of the belt conveyor so as to support the belt conveyor on the stand.

[0015] The conveyor may further include a discharge chute having an inclined surface that allows articles removed from the belt conveyor by the sorting arm to slide downward to avoid the arm drive device.

[0016] According to this configuration, items removed from the belt conveyor by the sorting arm can be slid down the discharge chute, allowing the items to fall without colliding with the arm drive device arranged extending to the side of the belt conveyor.

[0017] In addition, a plurality of the sorting arms may be arranged side by side in the conveying direction of the belt conveyor on both sides or one side of the belt conveyor, and the arm drive device may be provided for each of the sorting arms. Effect of the Invention

[0018] The present invention has the above-described configuration and has an effect of providing a sorting device that can prevent breakdowns in electrical components caused by water entering the housing of the arm drive device. [Brief description of the drawings]

[0019] [Figure 1] FIG. 1(A) is a schematic diagram showing the general configuration of a weight sorter equipped with a sorting device of one example of this embodiment, viewed from above, and FIG. 1(B) is a schematic diagram showing the general configuration of the same weight sorter, viewed from the side. [Diagram 2] Fig. 2(A) is a perspective view of a specific example of a sorting device, and Fig. 2(B) is a schematic diagram showing a framework of a stand of the sorting device. [Diagram 3] FIG. 3 is a side view of the sorting device shown in FIG. [Figure 4] FIG. 4 is an enlarged view of the sorting device shown in FIG. 2(A) as viewed from the downstream side in the conveying direction of the sorting conveyor. [Diagram 5] FIG. 5 is a perspective view showing an example of the internal details of the arm driving device. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. In the following, the same or corresponding elements are denoted by the same reference numerals throughout the drawings, and duplicated descriptions thereof may be omitted. In addition, the drawings are schematic illustrations of the respective components for ease of understanding, and shapes, dimensional ratios, and the like may not be accurately depicted. In addition, the present invention is not limited to the following embodiments.

[0021] (Embodiment) FIG. 1(A) is a schematic diagram showing the general configuration of a weight sorter equipped with a sorting device of one example of this embodiment, viewed from above, and FIG. 1(B) is a schematic diagram showing the general configuration of the same weight sorter, viewed from the side.

[0022] First, an outline of a weight sorter equipped with a sorting device 100 according to an example of this embodiment will be described. This weight sorter sorts items, such as agricultural and marine products, such as fruits and seafood, into a predetermined number of weight ranks, and includes an infeed conveyor 1, a weighing conveyor 2 supported by a weight sensor 2a such as a load cell, a sorting device 100 equipped with a sorting conveyor 3 and sorting arms 8, 9, an electrical equipment storage box 5, an operation display 6, and a control device 7. Around the sorting conveyor 3, for example, containers (containers) B1 to B7 for storing items are arranged.

[0023] An operation display unit 6 is fitted into the upper front part of the electrical equipment storage box 5, and a control device 7 is housed inside. The operation display unit 6 is configured using, for example, a touch panel display, and is equipped with an input means for operating the weight sorter and setting its operating conditions, and a display means for displaying the weight value of the articles, etc. on a display screen. The control device 7 inputs signals from the operation display unit 6 and outputs signals such as data to be displayed on the operation display unit 6.

[0024] The control device 7 is configured, for example, by a microcomputer, and controls the operation of the entire weight checker. Therefore, the control device 7 controls the operations of the feed conveyor 1, the weighing conveyor 2, the sorting conveyor 3, and the sorting arms 8 and 9. The control device 7 may be configured by a single control device that performs centralized control, or may be configured by multiple control devices that cooperate with each other to perform distributed control.

[0025] For example, a supply conveyor (not shown) is provided in front of the infeed conveyor 1. Articles are supplied to this supply conveyor from a worker or a front-stage device (not shown), and the articles are transported to the infeed conveyor 1. The infeed conveyor 1 receives the articles transported sequentially by the supply conveyor, and transfers them to the weighing conveyor 2. The weighing conveyor 2 receives the articles transported by the infeed conveyor 1, and transfers them to the sorting conveyor 3.

[0026] The control device 7 receives a weighing signal from the weight sensor 2a, and acquires the weight of the article on the weighing conveyor 2 weighed by the weight sensor 2a at a predetermined timing based on a detection signal from an article detection sensor (not shown) provided between the infeed conveyor 1 and the weighing conveyor 2, for example, and determines which of a plurality of preset weight ranks the weight of the article belongs to. Then, based on the determination result, the control device 7 controls the operation of the sorting arms 8, 9 by controlling an arm driving device 12 (see FIG. 2, etc.) described later.

[0027] Here, for example, seven weight ranks are set, consisting of six weight ranks for standard products, numbered 1 to 6, and a weight rank for non-standard products. These weight ranks can be set by the user by operating the operation display device 6.

[0028] For example, the weight range for standard products can be set to be equal to or greater than the lower limit weight value WL and equal to or less than the upper limit weight value WU, and the range below the lower limit weight value WL and the range above the upper limit weight value WU can be set to weight ranks for non-standard products.The weight range for standard products can be divided into six and weight ranks 1 to 6 can be set.

[0029] For example, by operating the sorting arms 8 and 9 at positions corresponding to the storage boxes B1 to B6, the first to sixth weight ranks of the items are stored in the storage boxes B1 to B6, such that the first weight rank of the items is stored in the storage box B1, the second weight rank of the items is stored in the storage box B2, and the third weight rank of the items is stored in the storage box B3. For example, in the case of the first weight rank of the items, the sorting arm 8 corresponding to the storage box B1 rotates around the rotating shaft 10 as shown by the two-dot chain line and advances onto the sorting conveyor 3, so that the items transported on the sorting conveyor 3 in the direction of the arrow a are stored in the storage box B1. In addition, in the case of the fourth weight rank of the items, the sorting arm 9 corresponding to the storage box B4 rotates around the rotating shaft 10 as shown by the two-dot chain line and advances onto the sorting conveyor 3, so that the items transported on the sorting conveyor 3 in the direction of the arrow a are stored in the storage box B4. For articles that fall under the weight rank of non-standard items, neither sorting arm 8 nor 9 is operated, so that the article is stored in non-standard item storage box B7.

[0030] In order for the control device 7 to accurately control the timing at which each sorting arm 8, 9 operates, an item detection sensor can be provided at the discharge end of the weighing conveyor 2 or halfway through the sorting conveyor 3, and the detection signal can be input to the control device 7.

[0031] Next, a specific example of the sorting device 100 will be described in detail. Fig. 2(A) is a perspective view of the sorting device 100 as viewed from diagonally above, and Fig. 2(B) is a schematic diagram showing the framework of the stand 50 of the sorting device 100. Fig. 3 is a side view of the sorting device 100. Fig. 4 is an enlarged view of the sorting device 100 as viewed from the downstream side in the conveying direction of the sorting conveyor 3. Note that Fig. 4 does not show the storage box placement units 70 provided on both sides of the stand 50.

[0032] This sorting device 100 includes a sorting conveyor 3, a drive device (motor 3M and drive transmission section 3S) for operating the sorting conveyor 3, sorting arms 8, 9, arm drive devices 12 (12A, 12B: see FIG. 4) for operating each of the sorting arms 8, 9, a discharge chute 40, a stand 50 for supporting the sorting conveyor 3, etc., and a storage box placement section 70 having four bars 71 arranged horizontally. An anti-jump plate 40a is attached to the discharge chute 40 to prevent articles from jumping out of the sorting conveyor 3.

[0033] The stand 50 includes support frames 51, 52 arranged in parallel to each other and extending in the conveying direction (arrow a direction) of the sorting conveyor 3, connecting frames 53, 54 connecting both ends of the two support frames 51, 52, four support columns 55-58 supporting both ends of the two support frames 51, 52, reinforcing frames 59-62 connecting the support columns 55-58, and legs 63 consisting of height adjustment adjusters attached to the lower parts of the support columns 55-58. The support columns 55-58 and the frames 51-54, 59-62 can be formed of, for example, equilateral angles, and are connected by welding or the like. In this example, a storage box placement unit 70 having four rods 71 ​​is attached to both sides of the stand 50, but the configuration of the storage box placement unit 70 can be changed as appropriate, or may be omitted.

[0034] The sorting conveyor 3 is a belt conveyor for conveying articles, and includes a driving pulley 31 on the upstream side in the conveying direction, a driven pulley 32 on the downstream side, an endless belt 33 made of a flat belt, a pair of side frames 34, 35 (FIG. 4) extending in the conveying direction, and a plurality of rod-shaped connecting parts 36 (FIG. 4) connecting the side frames 34, 35. As shown in FIG. 4, each side frame 34, 35 is formed, for example, of an L-shaped angle with an L-shaped cross section, and has vertical parts 34a, 35a and horizontal parts 34b, 35b. Each connecting part 36 connects the vertical parts 34a, 35a of the side frames 34, 35.

[0035] The driving pulley 31 and the driven pulley 32 are rotatably provided on both ends of the side frames 34, 35 in the conveying direction, and a conveying belt 33 is wound between the pulleys 31, 32. The driving pulley 31 is rotated by a motor 3M via a drive transmission unit 3S. Although the cover member of the drive transmission unit 3S is shown in the figure and the inside is not shown, it can have a well-known configuration, for example, configured by winding a timing belt between a pulley to which the rotation of the motor 3M is transmitted and a pulley provided at one end of the driving pulley 31. The motor 3M is fixed to a frame 50 at the upstream end side in the conveying direction of the sorting conveyor 3.

[0036] The sorting arms 8 are arranged in a row in the conveying direction at a predetermined interval on one side of the width direction of the sorting conveyor 3, and the sorting arms 9 are arranged in a row in the conveying direction at a predetermined interval on the other side of the width direction of the sorting conveyor 3.

[0037] Each of the sorting arms 8, 9 has a rotating shaft 10 extending in the vertical direction, and an arm portion 11 fixed to the upper end of the rotating shaft 10 and configured to remove articles from the sorting conveyor 3 by rotating the rotating shaft 10. Each of the sorting arms 8, 9 is provided with an arm driving device 12 (12A, 12B) disposed below the sorting conveyor 3.

[0038] Fig. 5 is a perspective view showing an example of the internal details of the arm driving device 12 (12A) of the distribution arm 8. The arm driving device 12 shown in Fig. 5 has a housing 13 having a substantially rectangular parallelepiped shape with a top plate 13a through which a rotating shaft 10 passes. The rotating shaft 10 is supported by a bearing part 17 fixed to the top plate 13a of the housing 13 and a bearing part 18 fixed to the bottom plate 13b of the housing 13 so as to be rotatable in a position extending in the vertical direction.

[0039] A drive unit 14 that rotates the rotating shaft 10 is housed inside the housing 13. The drive unit 14 includes a cylinder 15 that rotates the rotating shaft 10 forward and backward by the extension and retraction of a piston rod 15a, and a solenoid valve 16, which is an electric component that causes the cylinder 15 to perform the extension and retraction of the piston rod 15a. The cylinder 15 is an air cylinder, and air piping and the like that connects the solenoid valve 16 and the cylinder 15 are not shown.

[0040] The cylinder 15 is attached to the lower half area of ​​the housing 13 so as to be horizontally swingable about one end thereof by cylinder attachment members 20, 21 fixed to the bottom plate 13b of the housing 13. A link member 19a is attached to the tip of a piston rod 15a which advances and retreats from the other end of the cylinder 15. An annular portion is provided at the tip of the link member 19a, and this annular portion is rotatably attached to a connecting shaft portion 19c. The connecting shaft portion 19c is fixed to a link member 19b which is fixedly attached to the rotating shaft 10.

[0041] The cylinder 15 performs the extension and retraction operation of the piston rod 15a under the control of the solenoid valve 16 by the control device 7, and when the piston rod 15a extends from the contracted state (the state shown in the figure), the rotating shaft 10 of the sorting arm 8 rotates in the direction of the arrow b. The arm portion 11 of the sorting arm 8 advances onto the sorting conveyor 3 by rotating together with the rotating shaft 10, and the articles transported by the sorting conveyor 3 can be removed from the sorting conveyor 3. On the other hand, when the piston rod 15a contracts from the extended state, the rotating shaft 10 of the sorting arm 8 rotates in the direction opposite to the direction of the arrow b, and the arm portion 11 retreats from the sorting conveyor 3 and returns to its original position. In this way, the rotating shaft 10 and the arm portion 11 are rotated forward and backward by the extension and retraction operation of the piston rod 15a of the cylinder 15.

[0042] The solenoid valve 16 is fixed on a mounting plate 22 that is fixed on a cylinder mounting member 21. In this manner, the solenoid valve 16 is disposed above the bottom plate 13b within the housing 13 and away from the bottom plate 13b. In this example, the solenoid valve 16 is disposed above the cylinder 15.

[0043] In this embodiment, even if the items transported by the sorting conveyor 3 are wet items such as fish and the like that adhere to the surface of the belt 33 of the sorting conveyor 3 and fall from the belt 33 when the surface is turned down, and water seeps into the housing 13 due to deterioration of the housing 13 over time and accumulates at the bottom of the housing 13, as described above, the solenoid valve 16, which is an electrical component of the drive unit 14, is positioned away from the bottom plate 13b of the housing 13 and above the bottom plate 13b, so that the solenoid valve 16 can be prevented from being immersed in water and breakdown of the solenoid valve 16 can be prevented.

[0044] The arm drive device 12 (12B) of the opposite sorting arm 9 has a structure symmetrical to that of the arm drive device 12 (12A) of the above-mentioned sorting arm 8 with respect to the sorting conveyor 3 (center line of the sorting conveyor 3), and is similar to the arm drive device 12 (12A) of the sorting arm 8 except that the rotation direction of the pivot shaft 10 and the arm portion 11 due to the extension and contraction action of the piston rod 15a of the cylinder 15 is opposite, so a description thereof will be omitted.

[0045] 4 and other figures, the arm driving device 12A of each sorting arm 8 has a bottom plate 13b of its housing 13 fixed to one support frame 51 of the stand 50 with bolts or the like (not shown). Also, a horizontal portion 34b of one side frame 34 of the sorting conveyor 3 is fixed to a top plate 13a of the housing 13 of each arm driving device 12A with bolts or the like (not shown). In this way, the housing 13 of the arm driving device 12A is attached between the stand 50 and the side frame 34 of the sorting conveyor 3 so as to support the sorting conveyor 3.

[0046] Similarly, the bottom plate 13b of the housing 13 of the arm driving device 12B of each sorting arm 9 is fixed to the other support frame 52 of the stand 50 with bolts or the like (not shown). Also, the horizontal part 35b of the other side frame 35 of the sorting conveyor 3 is fixed to the top plate 13a of the housing 13 of each arm driving device 12B with bolts or the like (not shown). In this manner, the housing 13 of the arm driving device 12B is attached between the stand 50 and the side frame 35 of the sorting conveyor 3 so as to support the sorting conveyor 3.

[0047] As described above, the sorting conveyor 3 is supported on the frame 50 by the housings 13 of the arm driving devices 12A and 12B, but if necessary, a pillar (such as pillar 38 in Figure 2(A)) supporting the sorting conveyor 3 may be provided on the frame 50.

[0048] Also, as shown in Figure 4, the arm driving device 12A of the sorting arm 8 is arranged in a region extending from approximately directly below (directly below the side frame 34) the edge of the belt 33 of the sorting conveyor 3 that is closer to the pivot axis 10 of the sorting arm 8 in the width direction W of the belt 33 of the sorting conveyor 3 (width direction of the sorting conveyor 3) toward one side of the sorting conveyor 3.

[0049] In addition, the arm driving device 12B of the sorting arm 9 is arranged in an area extending from approximately directly below the edge of the belt 33 of the sorting conveyor 3 that is closer to the pivot axis 10 of the sorting arm 9 in the width direction W of the belt 33 (directly below the side frame 35) toward the other side of the sorting conveyor 3.

[0050] In this embodiment, the arm drive device 12 is arranged to avoid the central portion of the width direction of the belt 33 of the sorting conveyor 3 and directly below the central portion, so that when water adheres to the surface of the belt 33 of the sorting conveyor 3 and the surface is turned down, the amount of water that falls from the belt 33 onto the housing 13 of the arm drive device 12 is reduced, and the amount of water that infiltrates into the housing 13 due to aging can be reduced, so that the breakdown of the solenoid valve 16, which is an electric component, can be prevented more effectively. In addition, since the arm drive device 12 is arranged to avoid the central portion of the width direction of the belt 33 of the sorting conveyor 3 and directly below the central portion, most of the dirt that falls from the belt 33 when the surface of the belt 33 adheres to the surface of the belt 33 and the surface is turned down falls onto the floor surface on which the sorting device 100 is installed, and the floor surface can be easily cleaned, so that the cleanability can be improved.

[0051] Further, a discharge chute 40 is provided for each of the sorting arms 8, 9. The discharge chute 40 has an inclined surface that allows articles removed from the sorting conveyor 3 by the sorting arms 8, 9 to slide downward to avoid the arm driving devices 12A, 12B. Therefore, by allowing the articles removed from the sorting conveyor 3 by the sorting arms 8, 9 to slide down the discharge chute 40, they can be stored, for example, in storage boxes B1 to B6 without colliding with the arm driving devices 12A, 12B disposed extending to the side of the sorting conveyor 3.

[0052] In this embodiment, the sorting arms (8, 9) are arranged side by side on both sides of the sorting conveyor 3 in the conveying direction of the sorting conveyor 3, but a configuration in which a plurality of sorting arms are arranged side by side on either side of the sorting conveyor 3 in the conveying direction of the sorting conveyor 3 may also be used. A configuration in which one sorting arm is arranged on each side of the sorting conveyor 3, or a configuration in which only one sorting arm is arranged on either side of the sorting conveyor 3, may also be used. The length (length in the conveying direction) of the sorting conveyor 3 may be appropriately changed depending on the number of sorting arms, etc.

[0053] From the above description, many improvements and other embodiments of the present invention will be apparent to those skilled in the art. Therefore, the above description should be construed as merely illustrative and is provided for the purpose of teaching those skilled in the art the best mode for carrying out the present invention. Details of the structure and / or function thereof may be substantially changed without departing from the spirit of the present invention. [Industrial Applicability]

[0054] INDUSTRIAL APPLICABILITY The present invention is useful as a sorting device or the like that can prevent breakdowns in electrical components caused by water entering the housing of an arm driving device. [Explanation of symbols]

[0055] 3. Sorting conveyor 8,9 Swing arm 10 Rotating Axis 11 Arm section 12 Arm drive unit 13. Cabinet 13a Top plate 13b Bottom plate 14 Drive unit 15 cylinders 16 Solenoid valve 33 Belt 34,35 Side frame 40 Ejection Chute 50 Mount 100 sorting device

Claims

1. A belt conveyor for transporting objects; a sorting arm disposed on a side of the belt conveyor and including a rotating shaft extending in a vertical direction and an arm portion fixed to an upper end of the rotating shaft and configured to remove articles from on the belt conveyor as the rotating shaft is rotated; an arm driving device that is disposed under the belt conveyor and that has a housing having a top panel through which the rotation shaft passes and that houses a driving unit that rotates the rotation shaft; Equipped with The arm driving device is an electric component that is a part of the drive unit is disposed above and away from a bottom plate of the housing, The drive unit housed in the housing includes: a cylinder that rotates the rotary shaft forward and backward by the extension and contraction of a piston rod; a solenoid valve which is the electrical component for causing the cylinder to perform an extension and retraction operation of the piston rod, The solenoid valve is disposed above the cylinder. Sorting device.

2. The arm driving device is The belt conveyor is disposed in a region extending from approximately just below an edge of the belt that is closer to the pivot shaft in the width direction of the belt of the belt conveyor toward a side of the belt conveyor. The sorting device according to claim 1.

3. The housing of the arm driving device is A belt conveyor is supported on a platform between the platform and a side frame of the belt conveyor. The sorting device according to claim 2.

4. The conveyor further includes a discharge chute having an inclined surface that allows the articles removed from the belt conveyor by the sorting arm to slide downward to avoid the arm drive device. The sorting device according to claim 2 or 3.

5. The sorting arms are arranged in a line in a conveying direction of the belt conveyor on both sides or one side of the belt conveyor, and the arm driving device is provided for each sorting arm. The sorting device according to any one of claims 1 to 4.

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