JPH04243723A - Conveyor for sorting farm product - Google Patents

Abstract

PURPOSE:To provide a sorting conveyor of simple structure capable of surely conveying farm products one by one. CONSTITUTION:A number of rollers 9 are freely rotatably supported across a pair of right and left endless rotating bands 8,8 and a spiral body 12 is provided over the outer peripheral face of each roller 9 and a rotating means 13 is provided which forcibly rotates the rollers 9 around their pivotal support shafts.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention relates to a conveyor for sorting crops, which is configured so that crops to be conveyed, such as carrots, radishes, and other root vegetables, are sequentially loaded from a storage section and sent one by one to the next process. Regarding equipment.

0002

[Prior Art] Conventionally, in the above-mentioned transportation device for sorting crops, a flat belt-like belt conveyor is disposed at the bottom of the storage section, and the conveyed material is sent to one side of the storage section by this belt conveyor. One idea is to use a carry-out conveyor in which locking protrusions are provided at a predetermined pitch on the outer circumferential surface of an endless rotation belt, and the crops are placed one by one on the locking protrusions and taken out from the storage section and carried out. It was done.

0003

[Problems to be Solved by the Invention] In the above conventional structure, after the crops to be transported are transported horizontally to one side of the storage section in a state where there is no risk of damage due to the weight of the crops inside the storage section, A conveyor with protrusions allows for reliable loading and unloading one by one.

However, in the case of the above-mentioned conventional structure, the carrying-out conveyor has a structure in which a locking protrusion is simply formed on an endless rotation band, so that this type of crop having a special shape is always reliably held in the locking position. It is not always possible to place and lock onto the locking protrusion, and there is a drawback that two or more items may be placed on the locking protrusion by mistake, or they may not be placed on the locking protrusion for a long time, making it impossible to reliably carry out individual items. Since the locking protrusion is forcibly rotated, there is a risk of damaging the crops, and there is room for improvement.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and to provide a transport device for sorting crops that has a simple structure and can reliably transport the transported crops one by one.

[0006]

[Means for Solving the Problems] The characteristic configuration of the present invention is that, in the crop sorting conveyance device described at the beginning, a large number of rollers are rotatable at a predetermined pitch across a pair of left and right endless rotating bands. A spiral body is provided on the outer circumferential surface of each roller, and as the endless rotating band rotates, the roller rotates. The main feature is that a rotation means is provided for forcibly rotating the holder around its pivot axis.

[0007]

[Operation] As the endless rotation belt rotates, the crops to be conveyed are received by the bottom guide, placed and supported, and are conveyed while being stopped by each roller.During the conveyance, the rollers are forced to rotate. Due to the action of the helical body provided on the outer circumferential surface of the conveyor belt, the conveyed product is biased toward one side in the axial direction of the roller, and at the end of the conveyance, it is always kept within a predetermined portion of the conveyance width. It will be sent to the next process from the side location. Furthermore, as a result of being subjected to such cross-feeding action, even if multiple crops to be conveyed are simultaneously placed on the rollers at the starting end, the crops to be conveyed on the subsequent side during the above-mentioned cross-feeding are forced to Because it is discharged outward,
At the end, only one crop to be transported is always placed on each roller. Moreover, since the structure is such that the crops to be transported are locked by the rollers, there is little risk of damaging the crops.

[0008]

[Effects of the Invention] Therefore, it has become possible to provide a device that can reliably transport one crop at a time while minimizing damage to the crops with a simple structure. Moreover, by adopting the above structure, it is possible to increase the conveyance width and improve the conveyance efficiency while having the advantage of being able to carry out reliable single-piece conveyance.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the present invention will be described below with reference to the drawings. FIG. 3 shows an automatic crop sorting device equipped with an unloading device 1 as a conveying device according to the present invention. This sorting device has a hopper 2 (
An unloading device 1 that sequentially unloads loaded crops A from a storage section (an example of a storage section), and a unloading device 1 that sequentially unloads the loaded crops A from the unloading device 1, and a loading device 1 that places the loaded crops A one by one on a receiving tray 3 for conveyance. It also includes a sorting section 5 which measures the weight of the crops A to be transported and, based on the measurement results, drops and collects them into a plurality of collecting sections 4 according to each weight rank. The sorting unit 5 attaches trays 3 to the endless rotating chain 6 at a predetermined pitch, and measures the weight of the trays 3 on the lower side of the conveyance path where the trays 3 are placed to determine the weight of the crops A to be transported. A measuring device is provided, and a plurality of collecting units 4 are arranged in parallel on the downstream side in the transport direction, and based on the measurement results of the measuring device, when the receiving tray 3 is transported to the collecting unit 4 corresponding to each weight rank. The structure is such that it can be rotated and dropped into the collection section 4 via the guide chute 7 for collection.

Next, the carrying out device 1 will be explained. As shown in FIG. 4, this unloading device 1 rotatably supports a number of rollers 9 at a predetermined pitch over a pair of left and right endless rotating chains 8, 8 (an example of an endless rotating belt). The rollers 9 are configured to lock and convey the transported crops A, and include a transverse feeding section 1a that transversely feeds the transported crops A along the bottom of the hopper 2, and a hopper connected to the transverse feeding section 1a. 2, and an unloading section 1b for mounting and transporting the crops A to be transported diagonally upward to the outside of the storage section 2. A bottom guide 10 is provided below the conveyance area of the rollers 9 over the entire conveyance area, and the transported product A is placed on the bottom guide 10 while being held by each roller 9 and conveyed. It has been done. In addition, flat belt-type reduction belts 11 that move in the opposite direction to the conveying direction are arranged on both the left and right sides of the transverse feed section 1a,
When the crops A are lifted and conveyed obliquely upward from the transverse feed section 1a, the transported crops A that have fallen outward are returned to the conveyance starting end side, thereby improving the conveyance efficiency.

A spiral protrusion 12 (an example of a spiral body) is provided on the outer peripheral surface of each roller 9, and as the endless rotation chain 8 rotates, the roller 9 is rotated around its pivot axis. A means for forcibly rotating it is provided. To be more specific, as shown in FIGS. 1 and 2, a spiral protrusion 12 is formed on each roller 9 in a certain direction, and no spiral protrusion 12 is formed in a predetermined range on the terminal end side in the spiral feeding direction. It is formed on a smooth surface, and in the carrying out section 1b, contacts a part of the terminal end side of each roller 9 in the spiral feeding direction from the upper side to restrict the free rotation of the roller 9, and forcibly controls the roller 9 as it moves. A contact member 13 is provided as a forced rotation means for rotation.

[0012] With this configuration, even when a plurality of transported crops A are transported while being locked to the rollers 9, they are brought to one side laterally and their positions are regulated during transportation. It will be sent to the sorting section 5. As mentioned above, the reason why the spiral protrusion 12 is formed only halfway is to prevent all of the crops A to be transported from falling.

Further, the sorting section 5 and the unloading device 1 are configured to be rotationally driven by the same electric motor 14 with their conveying speeds synchronized.

[Another Embodiment 1] As shown in FIG. 5, the spiral protrusions 12 of each of the rollers 9 are configured to be horizontally fed one by one in opposite directions, so that the conveyance path of the sorting section 5 is changed from left to right. They may be provided in two rows.

[Alternative Embodiment 2] As means for forcibly rotating the roller 9, a dedicated drive device may be attached to each pivot portion thereof.

Although reference numerals are written in the claims to facilitate comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of the drawing]

[Figure 1] Plan view of the unloading device

[Figure 2] Front view of the unloading device

[Figure 3] Side view of automatic sorting device

[Figure 4] Plan view of automatic sorting device

[Fig. 5] Plan view of the unloading device of another embodiment

[Explanation of symbols] 2　　　　　　　　　　　　Storage part 8, 8 Endless rotating belt 9 Roller 10 Bottom guide 12 Spiral body 13 Rotation means

Claims (1)

[Claims] 1. A conveying device for sorting crops, which is configured to load crops to be conveyed from a storage section (2) and send them one by one to the next process, the device comprising: a pair of left and right endless rotating belts (8); (8
), a large number of rollers (9) are rotatably supported at a predetermined pitch, and each roller (9) and bottom guide (10
) to transport the crops in a locked manner, and a spiral body (12) is provided on the outer peripheral surface of each of the rollers (9), and as the endless rotation band (8) rotates, the A transport device for sorting crops, which is provided with a rotation means (13) for forcibly rotating a roller (9) around its pivot axis.