Bean sorting machine

Abstract

To properly screen a defective where the number of beans contained in a pod is not enough.SOLUTION: A bean classifier includes a swinging selection device 15 which selects objects h to be screened into a non-defective or a defective while swinging and transferring beans as the objects h to be screened along a transfer path. The swinging selection device 15 includes: a plurality of support mediums 30 which are arrayed at intervals along a lateral width direction and extend from a starting end part of a screening path to the transfer path; and a frame body 18 which supports the plurality of support mediums 30. The support mediums 30 includes: a first support medium 31 which is supported by the frame body 18 in a state where a relative position is fixed; and a second support medium 32 whose vertical position is changeable relative to the first support medium 31. The first support medium and the second support medium are alternatively arrayed in the lateral width direction. The vertical position of the second support medium 32 is changed so that a gap d between the first support medium 31 and the second support medium 32 is adjustable.SELECTED DRAWING: Figure 5

Description

Technical Field

[0001] The present invention relates to a bean sorting machine for sorting beans such as edamame, peas, and kidney beans, for example.

Background Art

[0002] In the above bean sorting machine, conventionally, while placing and transporting the object to be sorted on a belt conveyor, light from a light emitter is irradiated onto the object to be sorted from the lower side of the belt conveyor, and an image of the object to be sorted is taken by a photographing unit located above the belt conveyor. Based on the photographing result of the photographing unit, the number of beans contained inside the pod in the object to be sorted is specified, and if it is less than the set value, it is determined as a defective product (for example, see Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the above conventional configuration, when specifying the number of beans contained inside the pod based on the photographing result of the photographing unit, for example, due to changes in the posture of the object to be sorted at the location where the photographing is performed by the photographing unit, there is a possibility that accurate discrimination may not be performed, and there is a possibility that the determination of the quality of the object to be sorted may not be appropriately performed, and there is room for improvement.

[0005] Therefore, there has been a demand to be able to appropriately sort defective products with a shortage of the number of beans contained inside the pod.

[0006] An object of the present invention is to be able to appropriately sort defective products with a small thickness, such as defective products with a shortage of the number of beans.

Means for Solving the Problems

[0007] The characteristic configuration of the bean sorting machine according to the present invention is that it is equipped with an oscillating sorting device that sorts beans to be sorted into good and defective products while oscillating and transporting the beans to be sorted along a transport path, and the oscillating sorting device is equipped with a plurality of support bodies arranged at intervals along the width direction and extending along the transport path from the starting end of the sorting path, and a frame body that supports the plurality of support bodies, and the support bodies are arranged alternately in the width direction, with a first support body supported in a fixed relative position to the frame body and a second support body whose vertical position or front-to-back position can be changed relative to the first support body, and by changing the vertical position or front-to-back position of the second support body, the gap between the first support body and the second support body can be changed and adjusted. The second support is inclined such that the lower end in the transport direction is located below the upper end in the transport direction. It's at a single point.

[0008] According to the present invention, when the material to be sorted is brought in by the oscillating sorting device, it is placed on a first support and a second support arranged alternately and then transported by oscillating motion. During transport, material to be sorted with a small thickness can be dropped through the gap formed between the first support and the second support. For example, if the material to be sorted does not contain beans inside the pod, it will be thin and have a small thickness, so it is possible to determine whether it is good or bad by dropping such defective products and distinguishing them from good products.

[0009] Furthermore, sorting accuracy can be improved by adjusting the gap between the first and second supports to an appropriate distance to prevent good products from being accidentally dropped. Since the gap between the first and second supports is changed by changing the vertical or horizontal position of the second support, it can be implemented with a simpler structure compared to configurations where the gap is changed by changing the horizontal position of the first and second supports, and it is also easy to change the position of multiple second supports at once.

[0010] As a result, a simple design made it possible to properly sort out defective pods that lacked sufficient beans inside.

[0011] In the present invention, it is preferable that the second support is supported so that it can swing up and down with its upper end in the direction of transport as a pivot point, and so that the up and down swinging position can be changed, adjusted, and fixed.

[0012] When repositioning the second support, one possible configuration is to change its vertical position while maintaining a parallel orientation to the first support. However, this configuration has the disadvantage of requiring a complex adjustment mechanism. With this configuration, however, by using the upper end in the direction of transport as a pivot point for vertical oscillation, the position of the second support can be adjusted without complicating the overall support structure.

[0013] In the present invention, it is preferable that the gap between the second support and the first support becomes larger towards the downstream side in the transport direction.

[0014] With this configuration, the gap is narrow on the upstream side in the transfer direction of the oscillating sorting device, so even if the sorted items are fed in with force, good items can be prevented from falling out by mistake. As the objects to be sorted are transported by the oscillating motion, they align themselves to fit within the gap between the second and first support. In this aligned state, defective products can be efficiently dropped through the widened gap.

[0015] In the present invention, it is preferable that a lateral connecting body is provided that extends along the width direction and is integrally connected to each of the plurality of second supports, and that the lateral connecting body is supported by the frame so as to be adjustable in its vertical position.

[0016] This configuration allows for the simultaneous repositioning of multiple second supports by changing and adjusting the vertical position of the horizontally oriented connecting body. As a result, the work can be performed more efficiently compared to adjusting the position of each second support individually.

[0017] In the present invention, it is preferable that the lateral connecting body is provided at a position spaced downward from the plurality of second supports, and a plurality of support columns for separately connecting the lateral connecting body and each of the plurality of second supports are provided.

[0018] According to this configuration, the second support and the lateral connecting body are in a state of being spaced apart in the vertical direction with the support columns interposed therebetween. As a result, when the object to be sorted falls from the gap between the first support and the second support, there is no risk of the fall being obstructed by the lateral connecting body or the object falling at a position different from the preset collection destination location, and the sorting process can be performed well.

[0019] In the present invention, it is preferable that the first support is supported in a state of extending over the entire area of the sorting path along the transfer direction, and the second support is shorter than the first support in a state where the downstream end portion of the second support in the transfer direction is located on the upstream side in the transfer direction with respect to the downstream end portion of the first support in the transfer direction.

[0020] According to this configuration, in the area on the downstream side in the transfer direction from the downstream end portion of the second support in the transfer direction, only the first support exists, so a wide gap is formed. Therefore, good products can be dropped and collected through such a wide gap. Further, when the object to be sorted contains impurities such as long stem residues and branch residues, such impurities can be further transferred to the downstream side in the transfer direction by the first support and separately collected. That is, by using the long first support, long impurities can be separated from the good objects to be sorted.

Brief Description of the Drawings

[0021] [Figure 1] It is an overall side view of the bean sorting machine. [Figure 2] It is a longitudinal sectional side view of the sorting unit. [Figure 3] It is a plan view of the sorting unit. [Figure 4] It is a longitudinal sectional front view of the sorting unit. [Figure 5] It is a longitudinal front view of a shaking sorting device. [Figure 6] It is a longitudinal side view of a shaking sorting device.

Embodiments for Carrying out the Invention

[0022] Embodiments of the present invention will be described based on the drawings. In the following description, the direction of arrow FW in the figure is defined as "lower side (front side) in the transfer direction", the direction of arrow BK as "upper side (rear side) in the transfer direction", the direction of arrow UP as "up", and the direction of arrow DW as "down".

[0023] Fig. 1 shows a bean sorting machine according to the present invention. This bean sorting machine includes a conveying unit 1 that conveys edamame, which is an example of beans, along a conveying path along the left - right direction (front - rear direction) of the paper surface of Fig. 1 after the edamame is put in, and a sorting unit 2 that sorts the edamame as the object to be sorted while conveying it along the conveying path.

[0024] The conveying unit 1 includes a support frame 3 with casters, a hopper 4 into which edamame stored in the input container C1 is put, a supply belt conveyor 5 provided at the bottom of the hopper 4 for placing and conveying the edamame, and a conveying conveyor 6 with locking protrusions that locks and conveys the edamame sent out from the end of the supply belt conveyor 5 upward. The conveying conveyor 6 is provided in an upward - inclined posture so as to convey the object to be sorted obliquely upward.

[0025] The sorting unit 2 includes an air - sorting section 7 located on the upper - hand side in the transfer direction among the transfer paths in the sorting unit 2, which blows sorting air against the object to be sorted h to separate impurities such as twigs and leaf debris from the transfer path, and a shaking - sorting section 8 located on the lower - hand side in the transfer direction than the air - sorting section 7 among the transfer paths, which swings and conveys the object to be sorted h and distributes the good products and defective products among the object to be sorted h to different paths.

[0026] As shown in Figures 1 and 2, a fan 9 that generates sorting air and a ventilation passage 10 that guides the air generated by the fan 9 to the upper air sorting section 7 are provided on the underside of the conveyor belt 6, which is positioned in an upward inclined position. The air sorting section 7 is configured to blow the sorting air guided through the ventilation passage 10 onto the sorted material h being discharged from the end of the conveyor belt 6. Therefore, the air sorting section 7 acts on the sorted material h being discharged from the end of the conveyor belt 6.

[0027] Among the materials to be transported by the conveyor belt 6, impurities such as branches, leaves, or withered and dried-out defective materials are blown upward by the sorting airflow. As shown in Figure 4, an impurity discharge section 11 is provided to discharge the impurities that have been blown away by the sorting airflow and separated from the sorted material h to the outside of the transport path. The impurity discharge section 11 is equipped with inclined guide surfaces 12 that guide the impurities blown away by the sorting airflow toward the left and right outwards. The impurities guided toward the left by the inclined guide surfaces 12 are guided through discharge pipes 13 provided on both the left and right outwards in the lateral direction of the sorting unit 2, and are collected from the lower end of the discharge pipes 13 in a collection container (not shown).

[0028] Fan 9 is driven to rotate around an axis that extends along the left-right direction. In a plan view, fan 9 extends from the left end to the right end of conveyor 6. The outlet opening of the ventilation passage 10 extends from the left end to the right end of conveyor 6 in a plan view.

[0029] The oscillating sorting unit 8 will now be described. As shown in Figures 1, 2, and 3, the oscillating sorting unit 8 comprises a support frame 14 with casters and an oscillating sorting device 15 supported by the support frame 14. The oscillating sorting device 15 sorts the items to be sorted h into good products and defective products while oscillating and transporting the items to be sorted h along the transport path.

[0030] (Oscillating sorting device) The oscillating sorting device 15 is equipped with an alignment unit 16 located upstream of the transfer path in the direction of transfer, which aligns the orientation of the objects to be sorted h so that their longitudinal direction faces the direction of transfer while oscillating and transferring them, and a sorting unit 17 located downstream of the alignment unit 16 in the direction of transfer, which sorts the objects to be sorted h into good products and defective products on different paths while transferring them. The alignment unit 16 and the sorting unit 17 are integrally supported by a frame 18 that extends along the direction of transfer.

[0031] The alignment section 16 and the sorting section 17 are configured to vibrate together to swing and transport the objects h to be sorted. As shown in Figure 2, the system includes a fixed wall section 19 that is fixedly supported by the support frame 14, a swing link mechanism 20 that supports the alignment section 16 and the sorting section 17 together so that they can swing along the transport direction relative to the fixed wall section 19, and a vibration mechanism 21 that causes the alignment section 16 and the sorting section 17 to swing and vibrate together.

[0032] The vibration mechanism 21 includes an electric motor 22, an eccentric cam 23 that is rotationally driven by the electric motor 22, and a rod 24 that connects the eccentric cam 23 to the horizontal support body 18B in the frame 18. When the eccentric cam 23 is rotated by the electric motor 22, the rod 24 is repeatedly pushed and pulled by the amount of eccentricity of the eccentric cam 23, causing the frame 18 to vibrate along the transport direction.

[0033] (Alignment section) The alignment section 16 is provided with alignment grooves 25 that allow the sorted material h to enter and that extend along the transport direction. That is, as shown in Figure 4, the alignment section 16 is made of a plate with a roughly corrugated cross-section, and a plurality of grooves 25 are formed in the plate in a roughly triangular shape and extend along the transport direction. The grooves 25 are large enough to allow the sorted material h (edamame) to enter. That is, the vertical depth of the grooves 25 is set to be greater than the width of the sorted material h, so that when the sorted material h is inside the grooves 25, there is little risk of the sorted material h jumping out and moving towards the adjacent grooves 25 even when the vibration mechanism 21 performs an oscillating operation.

[0034] A first relay receiving section 26 is provided between the lower end of the alignment section 16 and the upper end of the sorting section 17. Between the first relay receiving section 26 and the lower end of the alignment section 16, an intermediate defective product discharge section 27 (hereinafter referred to as the intermediate discharge section) is formed to drop and remove defective products downward. Specifically, the intermediate discharge section 27 is the gap formed between the first relay receiving section 26 and the lower end of the alignment section 16.

[0035] The lower end of the groove in the alignment section 16 and the upper end of the first relay receiving section 26 are set to approximately the same height. Good products h that are oscillating and transported have a long longitudinal width and are passed to the sorting section 17 while being placed across the alignment section 16 and the first relay receiving section 26. However, defective products h that are oscillating and transported have a shorter longitudinal length than good products, such as single seed pods, fall out from the intermediate discharge section 27. Below the intermediate discharge section 27, there is a defective product collection container C2, which serves as a defective product collection section, and a first guide board 29 that guides defective products into the defective product collection container C2. Defective products that fall from the intermediate discharge section 27 are collected by the defective product collection container C2.

[0036] Although not shown in the diagram, the first relay receiving section 26 is supported by the frame 18 so that its position can be changed and adjusted along the transport direction. By changing the position of the first relay receiving section 26, the opening width of the intermediate discharge section 27 along the transport direction can be changed.

[0037] (Sorting Department) As shown in Figure 6, the sorting section 17 is positioned to the downstream side in the transport direction relative to the alignment section 16, and a step difference DA is formed with the downstream end of the alignment section 16 positioned higher than the upstream end of the sorting section 17. As described above, the lower end of the groove 25 in the alignment section 16 and the upper end of the first relay receiving section 26 are set at approximately the same height, and the upstream end of the sorting section 17 is set at a lower position than the upper end of the first relay receiving section 26. In other words, the downstream end of the alignment section 16 and the upper end of the first relay receiving section 26 are at a higher position, and the upstream end of the sorting section 17 is at a lower position, forming a step difference DA between them.

[0038] The sorting section 17 is equipped with multiple support members 30 that are arranged at intervals along the width direction and extend from the starting end of the sorting path along the transport path, all supported by the frame 18. The sorting section 17 is configured to remove defective products by allowing them to fall downward through the gaps between the support members 30.

[0039] To elaborate, as shown in Figure 3, the support structure 30 is provided with a first support structure 31 that is fixed in relative position to the frame structure 18, and a second support structure 32 that can change its vertical position relative to the first support structure 31, arranged alternately in the lateral direction.

[0040] As shown in Figure 5, the multiple first support bodies 31 and the multiple second support bodies 32 are each composed of plate bodies with a roughly inverted V-shaped cross-section. The first support bodies 31 are supported so as to extend along the entire sorting path in the transport direction, and the second support bodies 32 are shorter than the first support bodies 31, with the downstream end of the second support body 32 located upstream of the downstream end of the first support body 31 in the transport direction.

[0041] The gap d between the first support 31 and the second support 32 can be changed and adjusted by changing the vertical position of the second support 32. The second support 32 is supported so that it can swing up and down with its upper end in the direction of transport as a pivot point, and its vertical swing position can be changed, adjusted, and fixed. The gap d between the second support 32 and the first support 31 is set to be larger towards the lower side in the direction of transport. Specifically, as shown in Figure 6, the second support 32 is positioned so that it is further downward from the first support 31 towards the lower side in the direction of transport (i.e., it is positioned with a greater downward slope).

[0042] To elaborate, as shown in Figures 5 and 6, the upper and lower ends of the second support 32 in the direction of transport are provided with a lateral connecting body 33 that extends along the width direction and is integrally connected to each of the multiple second support 32s. The lateral connecting body 33 is positioned at a distance below the multiple second support 32s and is provided with a plurality of support columns 34 that connect the lateral connecting body 33 to each of the multiple second support 32s individually. The support columns 34 are constructed by attaching a sleeve 36 for spacing to the outer circumference of a bolt 35. The lower part of the support column 34 is screw-connected to the lateral connecting body 33, and the upper part of the support column 34 is screw-connected to a bracket 37 fixed inside the second support 32.

[0043] The lateral connecting body 33 has a roughly L-shaped cross-section when viewed from the side, and both ends in the width direction are supported by the side walls 18A on both sides of the frame 18 in the lateral direction. Of the lateral connecting bodies 33, the lateral connecting body 33A on the upper side in the transport direction is supported by the frame 18 in a fixed position, while the lateral connecting body 33B on the lower side in the transport direction is supported by the frame 18 so that its vertical position can be changed and adjusted.

[0044] As shown in Figure 5, the lateral connecting body 33B on the downstream side in the transport direction is connected to the side wall portion 18A of the frame 18 by fastening knob bolts 39 via L-shaped connecting members 38 at both ends in the lateral direction when viewed from the front. The bolt insertion holes 40 formed in the side wall portion 18A are elongated holes that are long in the vertical direction, and by changing the position of the knob bolts 39 within the range of the elongated holes, the lateral connecting body 33B on the downstream side in the transport direction can be repositioned vertically. By changing the vertical position of the lateral connecting body 33B, the downstream portions of the multiple second support members 32 in the transport direction can be repositioned vertically as a whole.

[0045] As shown in Figure 6, the lateral connecting member 33A on the upper side in the transport direction is connected to the side wall portion 18A of the frame 18 via connecting members 41 and bolts 42 at both ends in the width direction, similar to the lateral connecting member 33B on the lower side in the transport direction. When changing the position of the lower side portion of the second support 32 in the transport direction, the second support 32 can swing up and down around the axis of the bolts 42 by loosening the fastening of the bolts 42 to the connecting member 41 of the lateral connecting member 33A on the upper side in the transport direction.

[0046] As shown in Figure 6, the first support 31 is provided with lateral connecting bodies 43A and 43B at the upper and middle ends of the transport direction, similar to the second support 32, extending along the width direction and integrally connected to each of the multiple first support 31s. The lateral connecting bodies 43A and 43B are positioned spaced downward from the multiple first support 31s, and are provided with multiple support columns 44 that individually connect the lateral connecting bodies 43A and 43B to each of the multiple first support 31s. The connection structure between the lateral connecting bodies 43A and 43B and the first support 31 is the same as in the case of the second support 32, and is supported by the side wall portion 18A of the frame 18 via connecting brackets (not shown). However, in the case of the first support 31, the connecting brackets are supported with respect to the side wall portion 18A in a fixed vertical position.

[0047] As described above, the width of the gap between the first support 31 and the second support 32 can be changed by changing the vertical position of the second support 32 relative to the first support 31. As shown in Figures 5 and 6, while the sorted material h is being transported by oscillation, for example, narrow defective products that do not contain beans in their pods can be dropped downward through the gap between the first support 31 and the second support 32 and removed. At this time, by changing and adjusting the width of the gap, the width of the gap between the first support 31 and the second support 32 can be adjusted to an appropriate value so as not to accidentally drop good products.

[0048] A lower-side defective product discharge section 45 (hereinafter referred to as the lower-side discharge section) is formed at the lower end of the sorting section 17 to drop and remove defective products downwards.

[0049] To elaborate, as shown in Figures 2, 3, and 6, a second relay receiving section 46 is provided at a position further downstream in the transport direction than the downstream end of the second support 32 in the transport direction, and a downstream discharge section 45 is formed between the downstream end of the second support 32 in the transport direction and the second relay receiving section 46. Specifically, the downstream discharge section 45 is the gap formed between the downstream end of the second support 32 in the transport direction and the second relay receiving section 46.

[0050] The placement position of the object to be sorted h on the second support 32 and the upper end of the second relay receiving section 46 are set to approximately the same height. Good objects h that are long in the longitudinal direction are transported downward in the transport direction while being placed across the second support 32 and the second relay receiving section 46. On the other hand, defective products, such as single-grain pods, whose longitudinal direction is shorter than that of good products, fall downward from the lower discharge section 45.

[0051] Below the left-side discharge section 45, a second guide board 47 is provided to guide the fallen defective products to a defective product collection container C2, which serves as a defective product collection section. The defective products are then collected by the defective product collection container C2.

[0052] Good products that are transported to the downstream side in the transport direction without falling from the downstream discharge section 45 are transported to the area where only the first support 31 is present when the support provided by the second support 32 is released. The spacing between the first support 31 in the lateral direction is set to be larger than the width of the sorted material h, and good sorted material h falls downward through the gaps between the first support 31. Below the area where only the first support 31 is present, there is a good product collection container C3 as a good product collection section, and a third guide board 48 that guides good products into the good product collection container C3, and the fallen good products are collected by the good product collection box.

[0053] The upper ends of the second guide board 47 and the third guide board 48 are supported by the lower part of the second relay receiving section 46, and are configured to separate defective products from good products so that they do not get mixed together.

[0054] Although not shown in the diagram, the second relay receiving section 46 is supported by the frame 18 so that its position can be changed and adjusted along the transport direction. By changing the position of the second relay receiving section 46, the opening width of the lower discharge section 45 along the transport direction can be changed, and the spacing can be adjusted to an appropriate level so that good products do not accidentally fall downwards.

[0055] Of the materials being transported by the sorting unit 17, defective items h are collected in the defective item collection container C2, and good items h are collected in the good item collection container C3. Long pieces of contaminants such as stem scraps and long branches contained in the transported materials are not collected, but are transported to the downstream end of the sorting unit 17 in the transport direction while being placed on the first support 31. These elongated impurities are collected into the stem waste collection container C4 via a guide chute 49 located on the downstream side of the sorting unit 17 in the transport direction.

[0056] [Another embodiment] (1) In the above embodiment, in order to make the gap between the first support and the second support adjustable, the second support is supported so that it can swing up and down with its upper end in the transport direction as a pivot point. However, instead of this configuration, the second support may be supported so that its upper end and lower end in the transport direction can move simultaneously in the vertical direction. In this case, the gap between the second support and the first support is changed in the same way at any position in the transport direction.

[0057] (2) In the above embodiment, the horizontal connecting body and the second support body are connected by a support column, but instead of this configuration, the horizontal connecting body and the second support body may be directly connected.

[0058] (3) In the above embodiment, the horizontally connected body is supported by the frame so that its vertical position can be changed and adjusted. However, the second support members may be supported by the frame separately so that their vertical position can be changed, without providing the horizontally connected body.

[0059] (4) In the above embodiment, the width of the gap d between the first support 31 and the second support 32 can be changed and adjusted by changing the vertical position of the second support 32. However, instead of this configuration, the width of the gap d between the first support 31 and the second support 32 can be changed and adjusted by changing the front-to-back position of the second support 32.

[0060] (5) In the above embodiment, the second support is shorter than the first support, but instead, the first support and the second support may be the same length. In this case, good products to be sorted are discharged from the end of the sorting path of the sorting unit 17.

[0061] (6) In the above embodiment, a downstream discharge section 45 is formed at the downstream side of the sorting section 17, but a configuration without such a downstream discharge section 45 is also possible.

[0062] (7) In the above embodiment, edamame is selected as the item to be sorted h, but the item to be sorted h is not limited to edamame; other types of beans such as peas and green beans may also be selected. [Industrial applicability]

[0063] This invention can be applied to a bean sorting machine for sorting beans. [Explanation of Symbols]

[0064] 15. Oscillating sorting device 18 Frame 30 Support 31 First support 32 Second support 33B Sideways connecting unit d gap h Items to be sorted

Claims

1. The system is equipped with an oscillating sorting device that separates beans, which are to be sorted, into good and defective products while transporting them along a transport path with an oscillating motion. The oscillating sorting device is equipped with a plurality of support members arranged at intervals along the width direction and extending along the transport path from the starting end of the sorting path, and a frame that supports the plurality of support members. The support comprises a first support supported by the frame in a fixed relative position, and a second support whose vertical or horizontal position can be changed relative to the first support, arranged alternately in the lateral direction. A bean sorting machine in which the gap between the first support and the second support can be changed and adjusted by changing the vertical position or front-to-back position of the second support, and the lower end of the second support in the transport direction is inclined to be lower than the upper end in the transport direction.

2. The bean sorting machine according to claim 1, wherein the second support is supported so as to be able to swing up and down with its upper end in the transport direction as a pivot point, and so as to be able to change, adjust, and fix the position of the up and down swing.

3. The bean sorting machine according to claim 2, wherein the gap between the second support and the first support is larger on the downstream side in the transport direction.

4. A lateral connecting body is provided that extends along the width direction and is integrally connected to each of the multiple second supports, The bean sorting machine according to claim 1, wherein the horizontally oriented connecting body is supported by the frame so as to be adjustable in its vertical position.

5. The lateral connecting body is provided at a position spaced downward from the plurality of second supports, The bean sorting machine according to claim 4, further comprising a plurality of support columns that individually connect the horizontal connecting body to each of the plurality of second supports.

6. The first support is supported in such a manner that it extends along the transport direction over the entire area of ​​the sorting path. The bean sorting machine according to claim 1, wherein the second support is shorter than the first support, with the downstream end of the second support being located upstream of the downstream end of the first support in the transport direction.

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