JPH058832A - Conveyor for crop screening - Google Patents

Abstract

PURPOSE:To surely send crops one by one from a storage part toward a screening part in a subsequent stage, in an automatic screening device for crops. CONSTITUTION:A plurality of conveying bodies 21, in each of which an upper crop placing surface 21a having almost the same width with a crop to be conveyed is constituted into an inclined surface such that the more downstream it is located in the conveying direction, the lower it is located, are arranged in a parallel along the conveying direction. Moreover, a driving mechanism 22, which moved each neighboring conveying body 21 up and down at a prescribed pitch, is provided,. At this time, the driving timing is set in such a manner that a couple of conveying bodies 2 neighboring with each other move up and down in the opposite directions, thereby forming a progressive placing conveyor 3. In this case, it is constituted that a conveying width L3 of each conveying body 21 located downstream in the conveying direction from the conveying end part of a guide member 27, which is located at the lateral side of this progressive placing conveyor 3 and which moves at almost the same speed with the conveying speed in order to abut on the crop to be conveyed, is made variable.

Description

Detailed Description of the Invention

[0001]

INDUSTRIAL APPLICABILITY The present invention enables to pick up transported crops such as carrots, radishes and other long vegetables from a storage part and sequentially transport them to a measuring device in a subsequent process for automatic measurement and selection. In detail, the carrying-out device for sequentially placing and carrying out the crops from the storage part, and the sequential sending-out device for sending the crops sent out from the carrying-out device one by one in a predetermined posture to the weighing and sorting part in the next process. The present invention relates to a transportation device for sorting crops including a stationary transportation device.

[0002]

2. Description of the Related Art In the above-described crop sorting and conveying apparatus, conventionally, a crop is stored on one side of a storage hopper, and an endless rotating belt is provided with locking projections at a predetermined pitch on a peripheral surface of the conveyor belt. One by one is scooped up and placed on the locking protrusions and is carried out diagonally upward. During the transportation on the lower side of the transportation, the crops are placed one by one and moved up and down, A structure having a discharging tool to be sent to the process has been considered.

[0003]

However, in the above-mentioned conventional structure, the discharging tool moves up and down to discharge the crops one by one during the transportation of the crops which are continuously conveyed from the conveyor. Therefore, in order to increase the transport efficiency, it is necessary to increase the driving speed of the discharging tool, but doing so may damage the crops, and there is a disadvantage that the driving speed cannot be increased unnecessarily. Also, there is a risk that two crops will be erroneously placed on the discharging tool, and one crop will not be surely placed one by one, and there is room for improvement in this respect as well. The present invention aims to eliminate the above-mentioned problems.

[0004]

According to the characteristic constitution of the present invention, in the transportation device for sorting crops described at the beginning, an upper crop mounting surface having substantially the same width as that of the transported crop is provided. A plurality of conveyors configured in an inclined position positioned downward as the lower side of the conveyance of the above is arranged in parallel along the crop conveyance direction,
Further, a drive mechanism is provided for vertically moving each carrier at a predetermined pitch, and the drive timing is set so that adjacent carriers vertically move upside down contradictoryly, thereby forming the progressive-loading and carrying device. A guide member, which moves at a speed substantially the same as the conveying speed and abuts on the conveyed crop, is arranged on the lateral side portion of the loading / conveying device, and on the conveying lower side than the conveying end portion of the guide member. The point is that the carrying width of each of the carrying bodies located can be changed.

[0005]

With respect to the crops conveyed by the carry-out device, the placed crops are sequentially transferred to the conveyance side on the lower side of conveyance by the vertical movement of the conveyance body along the inclination thereof. At this time, since the adjacent carriers move up and down in a contradictory manner, only the crops placed on one carrier move to the carrier on the lower side. The width along the transport direction is almost the same as the crop width, and the transport width is configured to become narrower in sequence, so by repeating the transfer operation as described above multiple times, near the transport end part. In, only one crop will be placed on the carrier. Moreover, in such a transfer operation by the vertical motion of the carrier, the transported crop may easily fall laterally outward, but along the lateral side of the transport, the guide member is moved at a speed substantially equal to the transport speed. Since the guided crop is guided while moving, the transported crop can be prevented from being discharged and dropped unnecessarily. Further, since the transport width of the transport body at the transport end portion can be changed and adjusted, when the average values of the dimensions of the transported crop along the transport width direction are different, the transport width is adjusted to adjust the type of crop or Depending on the difference in size, a reliable feeding operation can be performed one by one.

[0006]

[Effects of the Invention] Therefore, even when a plurality of overlapping crops are carried out from the storage section, the crops can be reliably sent out one by one to the weighing and sorting section in the subsequent process, and the vertical movement is accompanied. The efficiency of transportation can be improved while minimizing the fall of the transported crops to the outside. Compared to the conventional structure, when the crops are released one by one while being placed and transported by the transport conveyor, the transportation is improved. Even if the vertical movement speed of the body is set to a relatively high speed, the sorting and placing operation one by one can be stably performed, so that the transport efficiency can be improved. Moreover, depending on the type and size of the transported crop,
It is now possible to reliably and reliably send out one by one.

[0007]

Embodiments will be described below with reference to the drawings. Figure 4
1 shows an automatic sorting device for crops in which carrots, radishes and other crops are sequentially carried out one by one from the storage section, weighed and sorted, sorted and collected according to each weight rank. This sorting device includes a storage hopper 1 for storing a large number of crops, a carry-out conveyor 2 (one example of a carry-out device) for sequentially carrying out and carrying out crops from the storage hopper 1, and a carried-to-be-transported crop C.
The sequential placing and conveying device 3 for sending to the subsequent process one by one, and the conveyed crops C sent out from the sequential placing and carrying device 3 are weighed while being placed and conveyed, and selectively sorted into a plurality of collecting tools 4 by each weight rank. It is configured to include a weighing and sorting device 5 for collecting.

As shown in FIG. 3, the storage hopper 1 has a flat belt type bottom conveyor 41 disposed at the center of the bottom surface thereof, and bottom side portions 1a and 1b located on both sides thereof are provided in an inclined posture to store crops. Is configured to be rolled and guided on the bottom surface conveyor 41, and the transported crop C is transferred from the terminal end of the bottom surface conveyor 41 to the transportation conveyor 2. Then, each of the bottom surface side portions 1a, 1b
Is rotatably pivoted about an axis on the bottom conveyor 41 side along the conveyor conveying direction, and is urged upward by a spring. According to this structure, in the initial stage of the work in which a large number of transported crops C are put in, each bottom surface side portion 1 is resisted by the C weight of the transported crops against the biasing force of the spring.
a, 1b can be set to have a large storage capacity by swinging downward, and as the sorting work progresses, each bottom side 1a, 1b
1b is lifted upward by the spring force and can effectively perform the guiding action.

As shown in FIGS. 6 and 7, the carry-out conveyor 2 winds the endless rotary belt 7 around a pair of upper and lower pulleys 6 and 6, and the endless rotary belt 7 has a predetermined outer peripheral surface. The locking projections 8 are formed at a pitch, and the transportation start end portion is arranged in the storage hopper 1 so as to face the bottom through a notch formed on one side of the storage hopper 1, and the transportation projection on each locking projection 8 is carried out. The crops C are placed side by side one by one and conveyed obliquely upward. Also, this carry-out conveyor 2
Vertical walls 9, 9 for preventing the transported crop C from falling laterally outward are formed on both left and right sides of each vertical wall 9,
In order to prevent the placed crops from falling from the upper side of the transport path toward the storage hopper 1 over the upper part of 9, a protective sheet 10 made of transparent synthetic resin covering the upper part of the transport path of the carry-out conveyor 2 is installed. I am doing it. The conveyance start end side of the protective sheet 10 is bent in an arc shape and fixed with a screw via the contact plate 11, and for example, the crop is erroneously attempted to be conveyed while being placed on the locking projection 8 in the upright posture. At this time, the posture is changed by abutting on the arcuate bent portion 10a.

The weighing and sorting device 5 is rotatable around a horizontal axis center at a position deviated to one side in the conveying direction, at a predetermined pitch over a pair of left and right endless rotating chains 12, 12. The mounting engaging portion 14 formed on the opposite side of the erected portion is mounted and locked on the guide rail 15 arranged along the endless rotating chain 12 to maintain a predetermined mounting posture. Configured. Then, as shown in FIG. 10, an appropriate portion in the middle of the guide rail 15 is configured as a movable rail 15a, the movable rail 15a is attached to one side of the balance arm 16, and the weight rank is provided on the other side of the balance arm 16. When the weight 17 of the transported crop C placed on the tray 13 is heavier than the weight 17, the movable rail 15a is lowered and the tray 13 is rotated downward. It is configured such that the placed crops are dropped and collected via the lower guide chute 18 to the collecting tool 4 of the corresponding rank among the collecting tools 4 arranged in parallel on the lateral side along the transport direction of the endless rotation chain 12. I am doing it. Further, the transported crop C that has not fallen to any of the collection tools 4 is configured to be guided from the end of the conveyance to the storage tools 20 arranged in parallel with each other through the guide chute 19 so as to be guided. is there. The storage tool 20 is arranged in a state in which the endless rotation chain 12 is located on the side of the upper hand side of the conveyance than the conveyance end position.

As shown in FIGS. 5 and 8, the progressive feeding device 3 has an upper crop placing surface 21a having substantially the same width as that of the transported crop C, and the lower side of the transported crop of the transported crop C. A plurality of conveyors 21 arranged in a tilted position located below are arranged in parallel along the crop conveying direction, and each conveyor 21
Is provided with a drive mechanism 22 that moves up and down at a predetermined pitch, and the drive timing is set so that adjacent conveyance bodies 21 move up and down in a contradictory manner. That is,
As shown in FIG. 9, the odd-numbered transport bodies 21 are configured as a first group so as to integrally reciprocate up and down at a constant pitch, and the even-numbered transport bodies 21 are integrally configured as a second group at a constant pitch. It is configured to reciprocate vertically,
A pair of T-shaped rocking members 24, 24 reciprocatingly rocked by an eccentric crank mechanism 23 are provided below each carrier 21, and a connecting arm 24a connected to the carrier 21 of the first group is provided. Each of the swing members 24 is pivotally supported on one side of the balance swing end, and the connecting arm 24a connected to the second group of transport bodies 21 is connected to the other side so that the first group and the second group are contradictory. The drive mechanism 22 is configured by setting the drive timing so as to move up and down. In addition, the conveyance width of each conveyance body 21 is formed to be wide at the conveyance start end portion, and is formed so as to become gradually narrower toward the end portion side, and only one crop is formed on the conveyance body 21 at the end portion. Is configured to be placed, and each of the transport bodies 21 is slightly inclined along the transport width direction so that the transported crops C overlapping with the transport are laterally displaced and placed one by one. is there. Then, the transport width of the two transport bodies 21 at the transport end position, that is, the width in the direction orthogonal to the transport direction is set to be larger than the transport width of the transport body 21 on the side better than that, and the transport at the end is performed. The body 21A is formed in a thin plate shape, and a sheet-like elastic body 40 is arranged in a cantilevered manner at the lower transfer location of the transport body 21A at the end of the transport body 21A so that an impact force is exerted when the transported crop is delivered. It is prevented from joining.

The effective crop mounting width of the narrow carrier 21 on the terminal end side can be changed. In detail,
As shown in FIGS. 1 and 2, the carrier 21 is attached to the connecting arm 24a so as to be laterally slidable along the carrier width direction, and is configured to be held in position by elastic force via a spring. The position can be changed laterally by operation. And the guide belt 27
The effective mounting width L3 can be changed by projecting it laterally outward from the end position of the.

The guided product C dropped from the end of the carry-out conveyor 2 is guided through a guide chute 25 which guides the transported product C downwardly in a posture along which the transported product C is placed and transported. It is configured so as to be sent out to a position on the upper side of the slope 21 and the overlapped conveyed crops C are supplied in a state where the overlap is broken. A guide belt 27 that rotates around a vertical axis that moves the transport speed at substantially the same speed and abuts on the transported crop C is provided on the lateral side of the high level side in the transport width direction of each transport body 21. The guide chute 25 is provided in a range extending over substantially the entire area of the guide chute 25. On the lower inclination side of the exit of the guide chute 25, the lower side of the conveyance is inclined toward the lower level side of the conveying body 21 in the longitudinal direction. To be transported C, which has a vertical orientation along the transport direction
A guide plate 28 made of synthetic resin for changing the posture to the sideways posture is provided, and the guide plate 28 is attached so as to be vertically swingable around the horizontal axis on the hand side of conveyance and to be able to change and adjust the inclination angle. Guide chutes 30 are provided on the left and right sides of the transport body 21 where the transport end portion is located to guide the dropped transported crop C onto the reduction belt 29.
The transported crop C guided by the above is configured to be returned to the storage hopper 1.

The mounting surface 2 on the low level side of each carrier 21
1a, on the working surface of the guide belt 27, the transported crop C
Surface material 31 that gives resistance to sliding and guides it to roll
Is attached. The surface layer material 31 is configured by arranging a large number of elastic small projections on the seat surface like a so-called artificial grass.

In the progressive feeding device 3, the transported crop C is transferred to the transporting body 21 on the lower side in the transporting direction by the upward movement of the transporting body 21 by the crop placing surface 21a in the inclined posture. The transferred crops C are carried by sequentially repeating such transfer movements. At this time, since the conveyed crop C before being transferred to the conveying body 21 moving downward is received and supported by the front surface of the next conveying body 21, the separation is reliably performed. In addition, since the width of the carrier 21 along the carrying direction is substantially equal to the width of the transported crop C, and the carrying width in the direction orthogonal to the carrying direction is gradually narrowed, such a transfer movement Is repeated a plurality of times, the transported crops C, which are overlapped by two or more, are leveled one by one, and are securely placed one by one near the end portion. Then, the crop C to be transported is 1 on the narrow carrier 21.
Even if it is sent in an unstable posture as if only part was placed,
Since the width of the transport body 21 at the end position is large, the carrier 21 always has a stable posture at the transfer position to the weighing and sorting apparatus 5,
At the time of transfer to the weighing and sorting apparatus 5, when the transfer body 21A at the final end of the transfer moves downward, the transfer body 21A moves onto the tray 13 at once without rolling, and the mounting posture does not become oblique.

[Other Embodiments] As means for changing the placement effective transfer width L3 of the transfer body 21 on the terminal end side, instead of the above-described slide structure, a transfer body 21 having a different transfer width is attached. You can

It should be noted that reference numerals are given in the claims for facilitating the comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a plan view of a terminal portion of a progressive feeding device.

FIG. 2 is a side view of a terminal portion of the progressive feeding device.

FIG. 3 is a sectional view of the hopper.

FIG. 4 is an overall side view of the sorting device.

FIG. 5 is a plan view of the progressive feeding device.

FIG. 6 is a side view of the carry-out conveyor.

FIG. 7 is a partial perspective view of the carry-out conveyor.

FIG. 8 is a perspective view of a progressive feeding device.

FIG. 9 is a side view of a sequential feeding device.

FIG. 10 is a plan view of the weighing and sorting device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Storage part 2 Unloading device 3 Sequential feeding placement conveyance device 21 Conveyor 21a Crop placement surface 22 Drive mechanism 27 Guide member L3 Conveyance width

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display area // B65G 47/78 E 8010-3F

Claims (1)

Claims: 1. A carrying-out device (2) for sequentially placing and carrying out crops from a storage section (1), and one crop sent out from the carrying-out device (2) in a predetermined posture. A transport device for selecting crops, which comprises a sequential feeding placement transport device (3) for sending to the next process, wherein the upper crop placement surface (21a) having substantially the same width as the transported crop is transported to the transported crop. Transporting crops The transporter (21) configured in a tilted position located on the lower side is
A drive mechanism (22) in which a plurality of the carriers (21) are arranged in parallel along the crop transport direction and vertically move each transport body (21) at a predetermined pitch.
And the drive timing is set so that the adjacent transport bodies (21) move up and down in a contradictory manner to configure the progressive-load placement transport device (3). A guide member (27) that moves to the lateral side at a speed substantially the same as the transportation speed thereof and abuts on the transported crop.
And each of the transport bodies (21) located on the transport lower side than the transport end portion of the guide member (27).
The conveyance device for sorting crops, which is configured to be able to change the conveyance width (L3).