JPH057848A - Weighing sorting device for crop - Google Patents

Abstract

PURPOSE:To constitute a weighing sorting device for crop of a simple structure wherein a weight is balanced and a movable placing member is prevented from colliding against a fixed rail and being damaged in a balance arm type weight sorting mechanism. CONSTITUTION:A plurality of supporting axes 32 are disposed at a prescribed pitch in a range over a pair of right and left endless turning bands 12, 12. Moreover, the placing members 13 for placing and supporting crop to be carried on the respective supporting axes 32 are rockingly pivoted. A guide rail 15 receives and supports the rocking end parts of the placing members 13 in a prescribed placing and carrying attitude. The midway proper parts of the guide rail 15 are constituted into the freely vertically movable rail parts 15a. The movable rail parts 15a are constituted so that the rail parts 15a are freely changed over to both a standby position and a lower evacuating position described below. When the weight of crop to be carried exceeds the weight of a weight 17, the rail parts 15a are moved to the lower side and allow the crop to be carried to fall and recover the same in the lower evacuating position. Moreover, the placing members 13 are constityted so that the rail parts 15a are freely evacuated and moved in the direction of the axial center of the supporting axis for the supporting axes 32.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crop weighing and sorting apparatus.

[0002]

2. Description of the Related Art In the above-mentioned crop weighing and sorting apparatus, conventionally, as disclosed in, for example, Japanese Utility Model Laid-Open No. 63-19226, a crop receiving object to be conveyed is received at a predetermined pitch over a pair of left and right endless rotating chains. The member is rotatably installed, and the locking member formed on the rotating end side is configured to be placed and supported on a guide rail arranged along the chain to hold the posture, and at an appropriate position of the guide rail, By balancing the balance with the weight, a movable rail that can be retracted downward is provided according to the weight of the transported crop, and the weight is selected.The end surface of the fixed guide rail on the lower side in the moving direction of the movable rail is conical. In some cases, the edge is formed in a shape and the edge on the upper side in the moving direction of the locking member is formed on the blade surface.

[0003]

The conventional structure described above is used in the case where the weight of the transported crop is balanced with the weight almost equal to that of the movable rail portion and the movable rail portion is slightly lowered. It is intended to prevent the receiving member from being damaged by the end surface of the locking member on the upstream side in the moving direction colliding with the end surface of the fixed rail portion and being caught. However, even in the above-described conventional structure, the blade surface and the conical portion are worn by the abutting action of the blade surface of the locking member and the conical portion of the fixed rail portion by a large number of sorting operations, and the sorting guide is provided. There is room for improvement because the action is reduced and there is a risk of being caught and damaged during a collision. The present invention aims to eliminate the above-mentioned problems.

[0004]

According to a characteristic configuration of the present invention, a plurality of support shafts are installed at a predetermined pitch over a pair of left and right endless rotation bands, and a transported crop is placed and supported on each support shaft. A guide rail that pivotally supports the mounting member and receives and supports the swinging end of the mounting member in a predetermined mounting and transporting posture is arranged along the rotation path of each of the endless rotation bands. By constructing a movable rail part that can move up and down at an appropriate point in the middle of this guide rail, and attaching this movable rail part and weighing weight to both ends of the balance arm, this movable rail part is almost the same as the fixed rail part. There are a standby position connected to the level, and a downward retreat position where when the weight of the transported crop exceeds the weight of the weight when passing through the placing member, it moves downward and the transported crop can be dropped and collected at a predetermined collecting section. The guide rail is configured to be switchable. The edge of the locking member on the side of the placing member that is placed and locked on the upper hand side of conveyance is formed to be inclined with respect to the conveying direction, and the placing member is retracted in the axial direction of the support shaft with respect to the support shaft. The point is that it is movable.

[0005]

When the transported crop is placed on the placing member and the endless rotation belt is rotated to reach the movable rail portion of the weight corresponding to the weight of the transported crop, the movable rail portion is moved by the weight. Swings downward to collect the transported crops in a predetermined collecting section.
Then, even if the weight of the transported crop is almost equal to the weight of the weight, the movable rail part is lowered slightly, and the locking member collides with the edge of the fixed rail part and bites into The component force along the axial direction of the support shaft due to the inclined posture of the end edge of the member acts on the mounting member, and the mounting member retreats in the axial direction. Then, the placing member is sorted and guided up or down depending on the impact at the time of collision and the retreat movement thereof.

[0006]

Therefore, even when the weight of the transported crop is almost the same as the weight and the movable rail portion is lowered slightly, the torque limiter or the like is added to the drive system of the endless rotation zone. Therefore, it is possible to maintain a smooth sorting operation without causing a damage of the mounting member and the like without inviting a complicated structure such as providing a complicated mechanism.

[0007]

Embodiments will be described below with reference to the drawings. Figure 5
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 placement placement / transportation device 3 that sends the products one by one to the subsequent process, and the transported crops Ca sent out from the sequential placement / loading transport device 3 are placed and transported and weighed, and selectively sorted into a plurality of collecting tools 4 according to each weight rank. It comprises a weighing and sorting device 5 for collecting.

As shown in FIGS. 7 and 8, 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.

As shown in FIGS. 1 and 2, the weighing and sorting apparatus 5 has a tray 1 for placing a crop at a predetermined pitch over a pair of left and right endless turning chains 12, 12 (an example of an endless turning band).
3 (an example of a mounting member) is rotatably installed around a horizontal axis at a position deviated to one side in the conveying direction, and a locking member 14 formed at a position on the opposite side of the installation part is an endless rotating chain 12. It is configured to be placed and locked on the guide rails 15 arranged along with to maintain a predetermined placement posture. Then, as shown in the figure, an appropriate portion in the middle of the guide rail 15 is configured as a movable rail portion 15a, the movable rail portion 15a is attached to one side of the balance arm 16, and the other side of the balance arm 16 is
A weight 17 corresponding to the weight rank is attached, and the movable rail portion 15a has a standby position where the movable rail portion 15a continues to substantially the same level as the fixed rail portion 15b, and the weight of the transported crop C exceeds the weight weight when passing through the tray. In this case, it is configured so that it can be switched to a lower retracted position where it moves downward and drops the transported crop C. When the movable rail portion 15a is changed to the downward retracted position, the tray 13 is rotated downward and the placed crops are arranged side by side along the conveying direction of the endless rotation chain 12 via the lower guide chute 18. Deployed collection tool 4
Among them, the collecting tool 4 of the corresponding rank is configured to be dropped and collected. More specifically, as shown in FIG. 4, a support shaft 32 is erected and connected across the left and right endless rotation chains 12, 12, and the support shaft 32 is provided at a position on the upper hand side in the traveling direction of the tray 13. A locking member 14 rotatably supported around a core and formed on the lower side of the tray 13 in the traveling direction is placed and locked on the guide rail 15 to move while maintaining a receiving posture. .. The balance arm 16 has contact bolts 33,
34 is configured to regulate the swing amount, and the tray 13
When there is not, the movable rail portion 15a is regulated by the weight of the weight 17 so that the movable rail portion 15a is at the same level as the fixed rail portion 15b by the one-sided contact bolt 33. When the weight of the transported crop C is heavier than the set weight at which the weight balance with the weight 17 is lost, the tray 13 swings downward to drop the transported crop C downward.

As shown in FIG. 3, an end edge 14a of the locking member 14 on the upper hand side of the conveyance is formed in an inclined state with respect to the conveyance direction and is formed on a sharp blade surface, and a fixed rail portion 15b is formed. The upper end edge in the traveling direction facing the movable rail portion 15a is formed into a conical shape. In this way, when the movable rail portion 15a is slightly displaced downward, the locking member 14 can be smoothly sorted and guided above and below the fixed rail portion 15b. Further, while supporting the tray 13 slidably with respect to the support shaft 32,
The elastic member 35 is elastically retractable in the axial direction of the support shaft. With this configuration, even if the locking member 14 collides with the fixed rail portion 15b at the end edge and tries to bite into the fixed rail portion 15b, at this time, the tray 13 moves in the axial direction by the action of the inclined end edge 14a of the locking member 14. It moves by receiving the component force of, and the biting phenomenon is prevented, and an opportunity to escape to the upper or lower side is given, and the recovery operation can be performed smoothly.

Further, the conveyed crop C which has not fallen to any of the collecting tools 4 is guided to fall from the terminal end portion of the carrying via the guide chute 19 to the storage tools 20 arranged in parallel with each of the collecting tools 4. Configured. 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 FIG. 6 and FIG. 9, the progressive feeding device 3 has an upper crop placing surface 21a having substantially the same width as the transported crop C, and the lower side of the transported crop C of the transported crop. 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. 10, the odd-numbered carriers 21 are configured as a first group so as to reciprocate vertically at a constant pitch, and the even-numbered carriers 21 are integrally configured as a second group at a constant pitch. An eccentric crank mechanism 23 is provided at a lower position of each carrier 21 so as to reciprocate vertically.
A pair of T-shaped rocking members 24, 24 that reciprocally rock by means of are provided, and a connecting arm 24a connected to the first group of transport bodies 21 is provided on one side of the balance rocking end of each rocking member 24. A drive mechanism that pivotally supports and connects the connection arm 24a that is connected to the second group of transport bodies 21 to the other side and sets the drive timing so that the first group and the second group move up and down in a contradictory manner. 22 are configured.
In addition, the conveyance width of each conveyance body 21 is wide at the conveyance start end,
It is formed so that the width becomes narrower toward the terminal end side, and only one crop is placed on the carrier 21 at the terminal end, and each carrier 21 is arranged in the carrier width direction. The crops C to be transported which are overlapped with the transfer are laterally offset so as to be placed one by one.

In the progressive feeding device 3, the transported crop C is transferred to the transport body 21 on the lower side in the transport direction by the upward movement of the transport 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. Moreover, the width of the carrier 21 is equal to the transported crop C.
Since the width is almost equal to the width of C, if such a transfer movement is repeated a plurality of times, two or more overlapped crops C
Will be leveled one by one, and will be reliably delivered one by one at the terminal end.

[0016] The conveyed product C dropped from the end of the carry-out conveyor 2 is guided through a guide chute 25 for guiding the conveyed product C in a posture along which the conveyed product C is placed and conveyed. 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.

Then, the transport body 21A at the final end of the transport is formed in a thin plate shape, and the length of the transport body 21A in the direction orthogonal to the crop transport direction is set to the crop transport direction of the transport body 21 on the good transport side. It is formed to be longer than the length in the direction orthogonal to. With this configuration, the sheets are sequentially transferred as described above, and one sheet is transferred onto each carrier 21 near the terminal end.
When the transported crops C, which are placed one by one, are transferred to the weighing and sorting apparatus 5, when the transport body 21A at the final end of the transport moves downward, the crops C are transferred onto the saucer 13 at once without being rolled, and the placement posture is set. Never becomes slanted. Further, even for the transported crop C having an unstable posture in a state of being partially mounted on the transport body 21 in front of it, a reliable guiding action is performed, and the weighing accuracy can be improved.

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 weighing and sorting device.

FIG. 2 is a sectional view of a weighing and sorting device.

FIG. 3 is a plan view of a tray locking portion.

FIG. 4 is a side view of the tray locking portion.

[Fig. 5] Overall side view of the sorting device

FIG. 6 is a plan view of a progressive feeding device.

FIG. 7: Side view of carry-out conveyor

FIG. 8 is a partial perspective view of the carry-out conveyor.

FIG. 9 is a perspective view of a progressive feeding device.

FIG. 10 is a side view of a progressive feeding device.

[Explanation of symbols]

 4 Recovery Part 12, 12 Endless Rotating Band 13 Placement Member 14 Locking Member 15 Guide Rail 15a Movable Rail 15b Fixed Rail 16 Balance Arm 17 Weight 32 Spindle

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shigenori Saito 332 Ryohacho, Sakata City, Yamagata Prefecture Sai Saino Farm Co., Ltd.

Claims (1)

Claims: 1. A pair of left and right endless rotation zones (12), (1)
A plurality of support shafts (32) are erected at a predetermined pitch over 2), and a mounting member (13) for mounting and supporting the conveyed crop is pivotally supported on each support shaft (32). A guide rail (15) for receiving and supporting the swinging end portion of the placing member (13) in a predetermined placing and conveying posture is provided with the endless rotation band (1).
2) and (12) are arranged along the rotation path, and an appropriate portion of the guide rail (15) is formed as a vertically movable movable rail portion (15a).
a) and a weighing weight (17) are attached to both ends of the balance arm (16), and the movable rail portion (15a) is placed at a standby position where the movable rail portion (15a) and the fixed rail portion (15b) are connected to the same level.
When the weight of the transported crop exceeds the weight of the weight (17) when passing through the placing member (13), the downward retracted position where the transported crop can be dropped and collected to a predetermined collecting section (4) And an edge of the locking member (14) on the side of the mounting member (13) that is mounted and locked on the guide rail (15) on the upstream side of the transportation with respect to the transportation direction. The support member (13) is formed in an inclined state, and the mounting member (13) is attached to the support shaft (3).
2) A weighing and sorting device for crops which is configured to be retractable in the axial direction of the spindle.