JPH04246019A - Sorting conveyor for crop - Google Patents

Abstract

PURPOSE:To convey a series of conveyed crops accurately one by one at a specified pitch by arranging plural units of single delivery devices, delivering these conveyed crops in an up-and-down motion in a state of mounting them piece by piece on an upper mounting surface, in series along the conveying direction. CONSTITUTION:The first half part of a single takeout part 4b guides a conveyed work A separated into two rows down to symmetrically tilted guide parts 19 toward both symmetrical sides in keeping it in the longitudinal position intact. Both first ejectors 20, 20 at both symmetrical sides is provided with an upper mounting surface, where the center is recessed in accord with crop form, and they rock over an almost crop taking-in attitude and a delivering attitude in sliding the crop downward around a horizontal shaft center X1 at the downside of the conveyed work. In addition, at the conveyance downside, there are provided a symmetrical pair of second ejectors 23, 23 pivotally supported free of rotation around the horizontal shaft center X2 just like the first ejectors 20, at the conveying cross direction central side, and at both the sides, the conveyed work is guided down to these ejectors 23, 23 in keeping it in a longitudinal position intact, while a tilting guide part 24 allowing a temporary staying is installed, through which the crops are surely conveyed one by one.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention is for transporting crops, such as carrots, radish, and other root vegetables, from a storage section and sending them one by one to a measuring and sorting section for the next process. This invention relates to a sorting conveyance device.

0002

2. Description of the Related Art Conventionally, in the above-mentioned conveying device for sorting crops, locking protrusions are formed at a predetermined pitch on the outer circumferential surface of an endless rotating belt, and the crops to be conveyed are sequentially placed and locked by each of the locking protrusions. It can be configured to stop and be loaded and transported one by one, or it can be configured to support rollers that can freely rotate at a predetermined pitch across a pair of left and right endless rotation bands, and one can be placed between each roller. One idea was to have a structure in which crops could be loaded and transported one by one.

0003

[Problems to be Solved by the Invention] In the conventional structure as described above, crops are placed and transported one by one, the weight and length of the crops are measured, automatic sorting is performed based on the measurement results, etc. It is sent into the work process to enable automatic sorting of this type of crop.

However, in the above conventional structure, it is not always possible to reliably place and guide the crops one by one in a predetermined posture between each of the locking protrusions and each roller, and in the former conventional structure, There is a high risk of problems such as when two or more crops are placed on the locking protrusion or when crops are not placed on the locking protrusion.
In addition, in the latter conventional structure, there is a high risk that crops may be placed across multiple rollers, and as a result,
It was not possible to reliably place and transport the pieces one by one at a predetermined pitch.

[0005] The present invention aims to solve the above-mentioned problems.

[0006]

[Means for Solving the Problems] The characteristic configuration of the present invention is that a single unit transports the crops carried out from the storage section and places them one by one on the upper mounting surface and moves them up and down to send them to the downstream side in the carrying direction. The point is that a plurality of delivery devices are arranged in series along the conveyance direction.

[0007]

[Operation] In the conveyance process in which a large number of crops to be conveyed are taken out from a storage section where a large number of crops to be conveyed are stored, the crops to be conveyed are placed and conveyed, and the first single delivery device places the crops to be conveyed on its upper loading surface. Since it moves up and down while placed and sends out the loaded crops to the downstream side in the conveying direction, even if multiple loaded crops overlap when being taken out from the storage section. , and on the downstream side of the conveyance, they are separated into pieces one by one. However, in order to ensure smooth transfer to the upper loading surface of the single feeder, if the upper loading surface is set to be larger than the shape of the transported crops, two or more products may be accidentally loaded. However, since there are multiple similar single-unit feed-out devices on the downstream side of the conveyance, it is ensured that one
This means that individual feeding operations can be performed.

[0008]

[Effects of the Invention] Therefore, even if the upper mounting surface of the single unit feeding device is made large enough to prevent the crops being transported from being dropped, and the conveyance of the crops can be carried out smoothly, We have now been able to provide a device that can reliably send out and transport one piece at a time.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the present invention will be described below with reference to the drawings. FIG. 6 shows an automatic crop sorting device equipped with a single conveyance section 4 as a conveyance device for crop sorting according to the present invention. This sorting device consists of an unloading section 3 that locks the transported crops A, places them obliquely upward, and transports them from a hopper 2 (an example of a storage section) that stores a large number of transported crops such as carrots. A single conveyance section 4 that sequentially sends out the transported crops A from the conveyance end part to the next process one by one and in a predetermined posture, receives and supports the transported crops A sent out from the single conveyance section 4. , a measuring section 5 that measures the weight of each item one by one, and a sorting section 7 that sorts and collects the items into a plurality of collecting sections 6 corresponding to each weight rank based on the measurement results of the measuring section 5.

The carrying out section 3 has a carrying out conveyor 11, which has locking protrusions 10 formed at a constant pitch on the outer periphery of an endless rotary belt 9 wound around a pair of pulleys 8, 8, at its starting end. The portions are arranged so as to face the bottom from one side of the hopper 2, and the crops A to be transported are placed on each of the locking protrusions 10.
The structure is such that the containers are placed horizontally one by one and transported out. Further, the measuring section 5 carries out the conveyed crops A sent in one by one on the conveying belt 12 in the same direction as the conveying direction of the unloading section 3 and the single conveying section 4. The sorting unit 7 calculates the amount of downward displacement of the conveyor belt 12 based on the weight of A by a differential transformer-type measuring device, and while conveying in the same direction as the measuring unit 5, the sorting unit 7 calculates the amount of downward displacement of the conveyor belt 12 based on the weight of Based on this, when the transported crops A of the weight corresponding to each weight rank approach, a plurality of pushing tools 14 are moved along the transport direction to drop and collect the crops A through the guide chute 13 into the collection unit 6 for the weight rank. It is configured by deploying them in parallel.

[0011] The single conveyance unit 4 places and conveys the transported crops A sent from the terminal end of the carry-out conveyor 11, while transporting the transported crops A so that the longitudinal direction of the transported crops A is along the conveying direction. An alignment conveyance section 4a for aligning and a single unit feeding device for vertically moving the crops A to be conveyed placed one by one on the upper placing surface and sending them out in the downstream direction in the conveyance direction are arranged in series in two directions along the conveyance direction. It consists of an array of single take-out parts 4b. To be more specific, as shown in FIGS. 2 and 3, the alignment conveyance unit 4a is a wide flat belt on which the crops A to be conveyed are placed and conveyed, which are sent from the terminal end of the carry-out conveyor 11 via the downstream guide plate 15. A type transport conveyor 16 is provided, and a sorting guide 17 for separating the transported crops A into two rows on the left and right is arranged in the center of the transport conveyor 16, and
Guide members 18 for preventing falling are provided on both left and right sides of the conveyor 16. In this way, the crop A to be transported, which has been fed in a horizontal orientation, is changed to a vertical orientation by the abutting guidance action, and then transported to the single unit delivery section 4b.

As shown in FIG. 4, the front half of the single take-out section 4b has a left and right side that guides the transported crops A, which have been separated into two rows as described above, downward toward the left and right sides while maintaining the vertical posture. An inclined guide section 19 is provided, and a pair of left and right first dispensing tools 20, 20 as a single unit delivery device are disposed on the lateral outer side of each inclined guide section 19. Between the alignment conveyance section 4a and the single take-out section 4b, there is a spiral protrusion that prevents the long crops to be conveyed from taking an oblique position in the inclined guide section 19 and forcibly feeds them laterally toward both left and right sides. A rotary roller 21 is provided. The first discharge devices 20, 20 have an upper mounting surface 20a having a concave center to match the shape of the crop.
It is configured to be freely driven and swingable around the horizontal axis X1 on the lower side of conveyance between an almost horizontal position for entering the crop and a position for sliding the placed crop toward the lower side and sending it out. Further, in the vicinity of the rotation axis X1, when the crop is in the crop entering position, it comes into contact with the top of the transported crop A to be guided and prevents two or more pieces from being placed on the upper placement surface 20a. In addition, in the feeding position, a guide member 22 is provided in a fixed position so as to be connected to the upper mounting surface 20a and slide-guide the transported crop A rearward.

[0013] The sorting guide 17 extends until it reaches the slide guide section by the first discharger 20,
In the slide guide section, the passage width of the transported crop A is narrowed so that only one transported crop A is guided through the slide guide section.

As shown in FIG. 5, on the lower side in the direction of conveyance, it is rotatably supported around the horizontal axis X2 in the same way as the first ejector 20, and has a similar upper part. A pair of second discharge tools 23, 23 forming a mounting surface 23a are provided on the center side in the transport width direction, and on both left and right sides, the crops to be transported are directed toward the second discharge tools 23, 23 while maintaining the vertical posture. Inclined guide section 2 that guides the flow down and allows temporary retention.
4 is formed. The drive timing of the second discharge tools 23, 23 is set so that the feed operation is repeated alternately and the transported crops A are sent out one by one to the subsequent process. Note that the first dischargers 20, 20, by their discharge operation, slide-fed the transported crops A to the second discharger 23, 20, respectively.
23, the drive timing is set so that the second ejection tools 23, 23 are in the feeding position. Further, on the upper side of the inclined guide section 24, there is provided a rotating roller 25 with a spiral protrusion that prevents the long product to be transported from being in an oblique position and forcibly transports it laterally toward the left and right center sides. There is.

[Another Embodiment 1] The discharge operation speed of the second discharge device 23 may be set higher than the discharge speed of the first discharge device 20 to reduce retention.

[Another Embodiment 2] Three or more of the discharge devices may be arranged in parallel along the conveyance direction.

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] Side view of single unit conveyance unit

[Figure 2] Plan view of single unit conveyance unit

[Figure 3] Cross-sectional view of the alignment conveyance section

[Figure 4] Cross-sectional view of the first discharge device installation part

[Fig. 5] Cross-sectional view of the second discharge device installation part

[Figure 6] Overall side view of automatic sorting device

[Explanation of symbols]

2 Reservoir 20, 23
Ejection tools 20a, 23a upper mounting surface

Claims (1)

[Claims] [Claim 1] A single unit feeder in which the crops to be transported, which have been carried out from the storage section (2), are placed one by one on the upper placing surfaces (20a) and (23a) and are moved up and down to be sent out in the downstream direction in the transport direction. A transportation device for sorting crops, in which a plurality of devices (20) and (23) are arranged in series along the transportation direction.