JP3530161B2 - Transplanter seedling supply device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transplanter for supplying seedlings separated in horizontal rows from aggregate seedlings such as paper tube seedlings, transferring the seedlings to a plurality of seedling planting devices, and transplanting the seedlings to a main field. The present invention relates to a seedling supply device for a transplanter, which divides the seedlings supplied to the receiving part into a plurality of seedlings and transfers them to the seedling planting device.

[0002]

2. Description of the Related Art In a transplanter for planting a plurality of lines, a seedling is distributed from one seedling feeding device and transferred to two seedling planting devices in order to downsize the device and reduce the number of workers. Known as the issue.

The seedling feeding device of this transplanter is provided with a seedling receiving belt for feeding closely aligned seedlings, and a seedling transfer belt is connected to the sending end of the seedling receiving belt. A seedling distribution device that distributes individual seedlings at a higher speed than the belt seedling transfer speed and distributes the seedlings to the left and right at the sending end of the seedling transfer belt. A distribution detector for detection is provided, and the seedling distribution device is controlled by the detection of the distribution detector to alternately distribute each seedling to the left and right, and each seedling planting device is connected to the left and right of the seedling distribution device. It is provided.

In addition to the above-mentioned seedling distribution device, a device for removing defective seedlings by a seedling selection device and closely aligning the misaligned seedling rows by a seedling alignment device is also known as Japanese Patent Laid-Open No. 9-275718.

The seedling feeding device of this transplanter is provided with a seedling sorting device and a seedling aligning device between the seedling receiving belt for feeding closely aligned seedlings and the seedling transferring belt immediately before the seedling sorting device, and the seedling sorting device is used to run out of stock. The seedlings are removed, the irregular seedling rows are closely aligned by a seedling aligning device, and the seedlings are fed to the seedling transfer belt at equal intervals. Therefore, the seedling aligning device is provided with a detector for detecting excess or deficiency of closely aligned seedlings, and when the seedling aligning device runs out of seedlings, the upstream seedling receiving belt and seedling selecting device are fast forwarded.

[0006] Another means of dividing seedlings from one seedling supplying device and transferring them to two seedling planting devices has been proposed by the present inventor as Japanese Patent Application No. 2001-210352.

In the seedling feeding device of this transplanter, a pair of seedling receiving belts that rotate in opposite directions are provided at one seedling receiving portion, and the seedling receiving and conveying belts are connected to the sending ends of the pair of seedling receiving belts. Each seedling planting device is connected to the sending end of a pair of seedling receiving and conveying belts, the conveying speed of the seedling receiving belt is higher than the conveying speed of the seedling receiving and conveying belt, and one horizontal row of seedlings The seedlings are supplied over both a pair of seedling receiving belts as seedling receiving parts, and the supplied horizontal row of seedlings are divided into left and right between a pair of seedling receiving belts, and seedlings are supplied to one seedling receiving part. It is divided into left and right and delivered to two seedling planting devices.

[0008]

[Patent Document 1] Japanese Patent Publication No. 5-442
In the conventional technique of No. 44, the seedlings supplied to one seedling receiving section can only be divided and delivered to two seedling planting devices. In addition, it is necessary to supply good seedlings that are closely aligned with the seedling receiving belt, but the seedlings raised as collective seedlings are mixed with a large number of missing seedlings that have not grown (bad seedlings). Therefore, it is very troublesome to manually remove the missing seedlings and align them closely.

Therefore, in JP-A-9-275718,
We supply good seedlings that are closely aligned to the seedling transfer belt using a seedling selection device that automatically removes the missing seedlings and a seedling alignment device that closely aligns the misaligned seedling rows.

However, even with this technique, it is only possible to divide the seedlings supplied to one seedling receiving portion and deliver them to the two seedling planting devices.

Also in Japanese Patent Application No. 2001-210352, seedlings supplied to one seedling receiving section can be divided and delivered to two seedling planting devices, but more seedlings are planted. It could not be delivered to the attached device.

In view of the above, the present invention is directed to a transplanting machine in which seedlings supplied to one seedling receiving section can be divided and transferred to four seedling planting devices, and a small number of workers can plant multiple ridges. An object is to provide a seedling supply device.

[0013]

A seedling feeding device of a transplanting machine according to the invention of claim 1 feeds seedlings P separated horizontally in a row from a collective seedling such as a paper tube seedling, and four seedling planting devices 40a, 40b, 40
In the transplanter for transferring to c and 40d and transplanting to the main field, a pair of left and right seedling receiving belts 4a and 4b that rotate in opposite directions are provided at one seedling receiving portion 3 and a pair of left and right seedling receiving belts are provided.
The seedlings P closely attached to the 4a and 4b are supplied, and the seedling transfer belts 30a and 30b are provided in series from the sending ends of the pair of left and right seedling receiving belts 4a and 4b. Seedling distribution devices 34a, 34b for separating and conveying the seedlings P conveyed by the pair of left and right seedling transfer belts 30a, 30b alternately to the left and right.
And a pair of left and right seedling distribution devices 34a, 34b are provided with respective seedling planting devices 40a, 40b, 40c, 40d, and the supplied horizontal row of seedlings P are provided in seedling receiving belts 4a, 4b. The seedlings are divided into left and right, and the seedlings supplied to one seedling receiving section 3 are divided into left and right and are transferred to four seedling planting devices 40a, 40b, 40c, 40d.

According to a second aspect of the present invention, there is provided a seedling feeding device for a transplanting machine, wherein the first seedling receiving belts 4a and 4b are composed of first seedling receiving belts 5a and 5b and second seedling receiving belts 6a and 6b. 5a,
The feeding speed of 5b is set higher than the feeding speed of the second seedling receiving belts 6a and 6b, and the seedlings P in a horizontal row are supplied to both the first seedling receiving belts 5a and 5b as the seedling receiving portion 3 at one place. The supplied lateral one-row seedlings P are divided into left and right between the first seedling receiving belts 5a and 5b.

[0015]

According to the invention of claim 1, a pair of left and right seedling receiving belts 4a and 4b which rotate in opposite directions are provided in one seedling receiving portion 3, and a pair of left and right seedling receiving belts 4a and 4b are provided. The seedlings P that are closely aligned with each other are supplied to the pair of left and right seedling receiving belts 4
Seedling transfer belts 30a and 30b are provided in series from the sending ends of a and 4b. The seedling transfer belts 30a and 30b convey individual seedlings P separately and are conveyed by a pair of left and right seedling transfer belts 30a and 30b. Since seedling distribution devices 34a, 34b for alternately distributing the seedlings P to the left and right are provided, and the respective seedling planting devices 40a, 40b, 40c, 40d are provided in series on the left and right of the pair of left and right seedling distribution devices 34a, 34b, The seedlings P that have been divided into left and right by the pair of left and right seedling receiving belts 4a and 4b are further divided into left and right by the seedling distribution devices 34a and 34b.

According to the second aspect of the invention, the seedling receiving belts 4a and 4b are provided.
Is composed of the first seedling receiving belts 5a and 5b and the second seedling receiving belts 6a and 6b, and the conveying speed of the first seedling receiving belts 5a and 5b is set to be higher than the conveying speed of the second seedling receiving belts 6a and 6b, and A row of seedlings P is supplied over both of the first seedling receiving belts 5a, 5b as one seedling receiving portion 3, and the supplied horizontal row of seedlings P is between the first seedling receiving belts 5a, 5b. Since it is divided into left and right, a gap due to a slight delay in supply is brought into close contact between the first seedling receiving belts 5a and 5b and the second seedling receiving belts 6a and 6b.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

As a collective seedling, a paper cylinder seedling in which the root portion of the paper cylinder collective raising container is covered with cultivating soil is shown. This paper tube collective raising container is a container in which a large number of paper tubes each having a hexagonal columnar shape and opened at the top when they are unfolded are orderly glued together. When this paper cylinder is filled with soil and sowed to raise seedlings, the seedlings grow and become paper cylinder aggregate seedlings. At the time of transplantation, the seedlings are connected to the individual seedlings P in an orderly manner while maintaining an appropriate connection strength.

As shown in FIG. 7, a separating tool 50 for separating the collected seedlings into horizontal row-shaped seedlings P is provided with a pad 51 along the side surface of the seedling and a back plate of the pad 51. A large number of rotating arc-shaped needles 52, a grip 53 at the center of the back surface of the plate 51, and arc-shaped needles.
And a handle 54 for rotating 52.

The operator holds the handle 53 and the handle 54, and
51 is arranged along the side surface of the collective seedling, an arcuate needle 52 is pierced from the upper surface of the paper cylinder of the collective seedling, and the separating tool 50 is tilted downward toward you to warp and separate the whole seedling P in a horizontal row. As for the seedlings P that are separated into one horizontal row, the individual seedlings are connected to each other by the hexagonal sides of the paper cylinder.

Next, the seedling supply device 1 for supplying the seedlings P separated in a horizontal row to the seedling receiving part 3 at one location, and the seedling supply device 1 for delivering to the four seedling planting devices 40a, 40b, 40c, 40d. The seedling supply device 1 of the transplanter for four ridges in which the seedling planting devices 40a, 40b, 40c, 40d are transplanted to the main field and four rows are transplanted to the main field at a time will be described.

FIG. 1 is a rear view showing a seedling supply device 1 of a transplanter, which is attached to a tractor and towed, and advances in the depth direction in the drawing. Four seedling planting devices 40a, 40b, 40c, 40d are provided below the seedling feeding device 1, and four seedling planting devices 40a, 4
0b, 40c, and 40d are connected to the seedling supplying device 1 to be supplied with the seedlings P, and the four rows are transplanted to the main field at once.

The seedling feeding device 1 is provided with a pair of left and right seedling feeding device frames 2a and 2b, and the seedling feeding device frames 2a and 2b are fixed to the machine frame of the transplanter. From the upper side of the left and right seedling feeder frame 2a, 2b,
A pair of left and right seedling receiving belts 4a and 4b are horizontally provided in the center direction, and the seedling receiving belts 4a and 4b are the first seedling receiving belts from the center side.
It is composed of 5a, 5b and second seedling receiving belts 6a, 6b.

The pair of first seedling receiving belts 5a, 5b located on the central side of the pair of left and right seedling receiving belts 4a, 4b is one seedling receiving portion 3 in the case where there is one worker. The pair of first seedling receiving belts 5a, 5b are stretched over the pulleys so that the upper surfaces thereof are in a straight line, and the opposite directions, that is, the upper surfaces thereof are rotated outward.

The pulleys at the transport start ends of the first seedling receiving belts 5a, 5b are made as small as possible, and as narrow as possible between the transport start ends, and the width of the first seedling receiving belts 5a, 5b is the paper tube portion of the seedling P. Wide enough to cover all of the leaves and leaves, and the first seedling receiving belt 5
The total length of a and 5b should be longer than the width of the seedling P row supplied.

The sending ends of the pair of first seedling receiving belts 5a and 5b,
That is, the second seedling receiving belts 6a and 6b are provided in series in the outward direction. The first seedling receiving belts 5a and 5b and the second seedling receiving belts 6a and 6b on the left and right sides are two seedling receiving portions when there are two workers.

The pair of second seedling receiving belts 6a and 6b are hung between the pulleys so that the upper surfaces thereof are in the same horizontal straight line as the first seedling receiving belts 5a and 5b, and the opposite directions, that is, the upper surfaces thereof are outwardly rotated. Move.

The pulleys at the transport start ends of the second seedling receiving belts 6a and 6b have a diameter as small as possible than the pulleys at the sending ends of the first seedling receiving belts 5a and 5b, and the distance between the sending end and the transport starting end is made as small as possible. The width of the second seedling receiving belts 6a, 6b is wide enough to cover the entire paper tube and leaves of the seedling P, and the total length of the first seedling receiving belts 5a, 5b and the second seedling receiving belts 6a, 6b on one side. The width is longer than the width of the seedling P row supplied.

A pair of vertical conveying flat belts 7a, 7b and a pair of vertical conveying projection belts 8a, 8b are connected to the transmitting ends of the pair of second seedling receiving belts 6a, 6b as the transmitting ends of the seedling receiving belts 4a, 4b. Set up.

The pulleys on the sending end side of the first seedling receiving belts 5a, 5b and the pulleys on the starting end side of the second seedling receiving belts 6a, 6b are drive-connected by a chain wheel, and the conveying speed of the first seedling receiving belts 5a, 5b. This can be changed when the conveyance speeds of the second seedling receiving belts 6a and 6b are the same, and when the conveyance speeds of the first seedling receiving belts 5a and 5b are higher than the conveyance speeds of the second seedling receiving belts 6a and 6b. And

Here, the conveying speed of the first seedling receiving belts 5a and 5b can be changed in order to cope with the case where the operator for supplying the seedlings is one person and the case where the operator is two persons. That is, when the number of workers is one, it is supplied over both of the pair of first seedling receiving belts 5a and 5b as the seedling receiving portion 3 at one place, and the transport speed of the first seedling receiving belts 5a and 5b is set to the second seedling receiving belt. It should be higher than the conveying speed of the receiving belts 6a and 6b. When the number of workers is two, the first seedling receiving belts 5a and 5b are supplied over the first and second seedling receiving belts 5a and 5b and the second seedling receiving belts 6a and 6b as the two seedling receiving portions. And the transport speed of the second seedling receiving belts 6a and 6b are the same.

When there is only one worker, the transport speed of the first seedling receiving belts 5a and 5b is set to be about 50% faster than the transport speed of the second seedling receiving belts 6a and 6b. This is because it is difficult for the worker to supply the seedlings P on both sides in accordance with the preceding seedling P row, and it is possible to catch up with the opening between the supplied seedling P row and the preceding seedling P row.

When the number of workers is two, it is necessary for the worker to make the conveying speed of the first seedling receiving belts 5a and 5b and the conveying speed of the second seedling receiving belts 6a and 6b the same, because the worker is the preceding seedling on one side. This is because it is easy to supply the seedlings in close contact with the row P, and if the conveyance speed of the first seedling receiving belts 5a and 5b is fast in the close contact row P of seedlings, the seedlings may rise.

The pair of vertical conveying flat belts 7a and 7b and the belts 8a and 8b with vertical conveying protrusions are provided below the sending end of the second seedling receiving belts 6a and 6b, and the vertical conveying flat belts 7a and 7b and the vertical conveying protrusions are provided. The belts 8a and 8b with opposing surfaces face each other and sandwich the seedling P, and the seedling conveying speed of the vertical conveying flat belts 7a and 7b and the belts 8a and 8b with vertical conveying protrusions is the seedling conveying speed of the seedling receiving belts 4a and 4b. As a result, the individual seedlings P are made faster than the conveying speed of the second seedling receiving belts 6a and 6b.
Are separated and conveyed.

A seedling sorting device 10a and a seedling aligning device 20a are provided in series on the left side of the sending ends of the right vertical conveying flat belts 7a and 7b and the vertical conveying projection belts 8a and 8b. 7
A seedling sorting device 10b and a seedling aligning device 20b are provided in series on the right side of the sending ends of b and the belts 8a and 8b with vertical conveying projections.

The seedling sorting devices 10a and 10b are seedling receiving belts 4a and 4b.
Seedlings that did not grow from the seedlings P supplied to the plant (bad seedlings)
By the belt for sandwiching the leaf portion of the inverted seedling P and the belt for supporting the lower part of the paper cylinder, the missing seedlings lacking the leaf portion of the seedling P are continuously conveyed without being sandwiched by the belt. The missing plantlets are discharged out of the system from the P row of seedlings.

The seedling sorting devices 20a, 20b are the seedling sorting devices 10a, 1
0b to remove the missing seedlings, seedling receiving belt 4a, 4b seedling P
The P rows of seedlings that have become rough due to delay in supply are closely aligned and evenly spaced, and are delivered to the seedling planting devices 40a, 40b, 40c, 40d.

The seedling transfer belt 30 is installed on the seedling aligning devices 20a and 20b.
Seedling alignment rollers 23a, 23b for supplying seedlings P to a, 30b and detection belts 22a, 2 for delivering seedlings to the seedling alignment rollers 23a, 23b.
2b and alignment detectors 21a and 21b for detecting the presence or absence of seedlings P are provided above the detection belts 22a and 22b, and the swelling prevention belt 24 is provided above the seedling alignment rollers 23a and 23b from the detection belts 22a and 22b.
Provide a and 24b.

The seedling aligning rollers 23a, 23b are a plurality of discs corresponding to the upper part to the lower part of the paper tube of the seedling P, and the speed of the outer periphery thereof is constant in conjunction with the planting speed.
The seedlings P are placed on the a and 23b and conveyed toward the seedling transfer belts 30a and 30b.

The detection belts 22a and 22b are chain belts which are hung between chain wheels and whose upper surfaces are kept in a straight line.
The upper surface rotates in the seedling alignment rollers 23a, 23b direction. The detection belts 22a and 22b are provided with a large number of rollers that freely rotate in the conveying direction of the seedlings P, the rollers themselves also rotate, and the seedlings P are placed on the rollers and the seedling aligning rollers 23a and 2b.
Transport towards 3b.

With the freely rotating rollers of the detection belts 22a and 22b, it is possible to constantly store a plurality of seedlings P closely aligned on the detection belts 22a and 22b, and to remove the missing seedlings with the seedling selection devices 10a and 10b. , The seedling P supply to the seedling receiving belts 4a, 4b is delayed, or even the row of seedlings P that has become unevenly rough is delivered to the seedling alignment rollers 23a, 23b without fail by the accumulated seedlings P and the seedlings P that are closely aligned are crushed. I don't get excited.

The speeds of the swelling prevention belts 24a, 24b are constant in association with the planting speed, and the swelling prevention belts 24a, 24b
4b has its lower running portion vertically spaced apart from the upper running surfaces of the detection belts 22a and 22b by a distance slightly larger than the diameter of the seedling P, and the lower running portion rotates in the seedling alignment rollers 23a, 23b direction.
Normally, the seedlings P on the detection belts 22a and 22b do not contact the swelling prevention belts 24a and 24b, but the seedlings P on the detection belts 22a and 22b are pressed when they try to rise.

The alignment detectors 21a and 21b are provided with detection belts 22a and 2b.
A photoelectric switch provided from the seedling feeding device frames 2a and 2b slightly above the center of the seedling 2b and located above the rising prevention belts 24a and 24b corresponding to the upper and lower portions of the seedling P paper cylinder,
During this period, the optical axis is passed downward to detect the excess or deficiency of the seedlings P that are closely aligned and stored on the detection belts 22a and 22b.

That is, a delay timer circuit is incorporated to detect the seedlings P of the alignment detectors 21a and 21b, and the detection belt 22
The detection of the seedlings P that rapidly pass at the speeds of a and 22b is ignored, and only the seedlings P that are stored and slowly passed by the freely rotating rollers of the detection belts 22a and 22b are detected. The detection belt 22
Detect the excess and deficiency of seedling P on a and 22b.

When the shortage of seedlings P is detected by the alignment detectors 21a and 21b, the detection belt 22 of the seedling alignment devices 20a and 20b is detected.
The speeds of a, 22b, the seedling sorting devices 10a, 10b and the seedling receiving belts 4a, 4b upstream of them are increased through an electromagnetic clutch,
Further, when it is detected that the seedlings P are sufficient, these speeds are reduced, and the seedlings P are delivered to the seedling aligning rollers 23a and 23b without any excess or deficiency and aligned. The speed is such that at the time of deceleration, the number of seedlings P that is a little less than the number of seedlings P that are planted is conveyed, and at the time of acceleration, 5
Carry about the extra number.

The pair of seedling transfer belts 30a, 30b are provided below the sending ends of the seedling aligning rollers 23a, 23b of the respective seedling aligning devices 20a, 20b, and the seedling transfer belts 30a, 30b have their facing surfaces facing each other. A belt with protrusions for sandwiching and transporting the seedlings P, the transporting paths of which are the respective seedling planting devices 40a, 40b, 40c, 40d.
It is shaped like a "person" toward.

The seedling transfer speed of the seedling transfer belts 30a, 30b is set higher than the transfer speed of the second seedling receiving belts 6a, 6b for transferring the closely-attached seedlings P and the outer peripheral speed of the seedling alignment rollers 23a, 23b. The seedlings P are separated and conveyed.

On the seedling transfer belts 30a and 30b, seedling planting devices 40a and 40d are provided from immediately below the delivery ends of the seedling alignment rollers 23a and 23b.
Outer transfer belt 31 stretched in a substantially triangular shape toward the top of the
a, 31b, upper inner transfer belts 32a, 32b stretched in a substantially triangular shape from the position facing the sending ends of the seedling aligning rollers 23a, 23b to above the inner seedling planting devices 40b, 40c, and upper and outer Transfer belts 31a, 31b and upper transfer belts 32a, 32b are provided with lower transfer belts 33a, 33b, 33c, 33d stretched so as to face each other, and the surfaces facing each other are planted with seedling aligning rollers 23a, 23b. Device 40
Rotate toward a, 40b, 40c, 40d.

As the seedling transfer belts 30a and 30b, the upper outer transfer belts 31a and 31b, the upper inner transfer belts 32a and 32b, and the lower transfer belts 33a, 33b, 33c, and 33d have the same transport speed, and the seedling alignment rollers 23a and 23a. It is about 3.5 times faster than the peripheral speed of 23b. Since the transfer speed of the seedling transfer belts 30a and 30b is faster than the speed of the outer circumferences of the seedling alignment rollers 23a and 23b, the seedling alignment device 20
The closely aligned seedling P rows of a and 20b are sandwiched between individual seedlings P by the seedling transfer belts 30a and 30b and conveyed downward.

The seedling transfer belts 30a and 30b are being conveyed,
Below the upper and outer transfer belts 31a and 31b and the upper and inner transfer belts 32a and 32, the feeding end of the sandwiched carrier is provided with seedling distribution devices 34a and 34b that distribute the seedlings P to the left and right respectively.

The seedling distribution devices 34a, 34b have a substantially water-drop shape when viewed from the rear and have an elongated shape substantially corresponding to the length of the paper tube of the seedling P. The upper outer transfer belts 31a, 31b and the lower transfer belts as outer transfer paths. Positions where seedlings P are distributed to 33a, 33d, upper inner transfer belts 32a, 32b and lower transfer belts 33b, 3 as inner transfer paths
The tip of the seedling P is reciprocally rotated about 70 degrees with respect to the position where the seedlings P are distributed to 3c, and the seedlings P are distributed to the left and right one by one.

The pitch of the seedlings P of the seedling transfer belts 30a, 30b after the seedling distribution devices 34a, 34b have been distributed right and left is twice the pitch of the seedlings P before the distribution.

The seedling distribution devices 34a and 34b are instantaneously reciprocally rotated by a rotary solenoid, and the distribution is electrically controlled.

On the left and right sides of the pair of left and right seedling distributing devices 34a and 34b, a short vertical conveyor belt 36 is provided via seedling transfer belts 30a and 30b.
Long vertical conveyor belts 37a, 37b, 37c, 3 with a, 36b, 36c, 36d
7d are provided in series.

Distribution detectors 35a and 35b for detecting the seedlings P conveyed to the seedling transfer belts 30a and 30b on the upstream side of the seedling distribution devices 34a and 34b are provided.

The sorting detectors 35a and 35b are the seedling transfer belt 30.
a, 30b upper transfer belt 32a, 32b side seedling feeding device frame 2a,
The photoelectric switch provided from 2b is located between the upper inner transfer belts 32a and 32b sandwiching the upper and lower paper cylinders of the seedling P, and the optical axis is horizontally passed from between the upper and outer transfer belts 31a and 31b. The seedlings P conveyed while being separated by the upper transfer belts 32a and 32b are detected.

The seedlings P are conveyed a predetermined distance from the detection of the seedlings P by the detection timing of the seedlings P of the sorting detectors 35a and 35b and the position pulse from the rotary encoder which is interlocked with the conveying speed of the seedling transfer belts 30a and 30b. When seeded, the seedling distribution devices 34a, 34b rotate.

Further, when the distribution detectors 35a and 35b for detecting the seedlings P conveyed on the left and right sides of the seedling distribution devices 34a and 34b are provided, when the seedlings P are detected, the seedling distribution devices 34a and 34b are detected.
Can also be rotated and controlled without the intervention of a rotary encoder.

The seedling planting devices 40a, 40b, 40c, 40d are provided in series at the delivery ends of the pair of left and right seedling transfer belts 30a, 30b.

The seedling planting devices 40a, 40b, 40c, 40d are each composed of an opener, an elastic disc and a compression ring. The opener opens the planting groove, and the pair of elastic discs sandwich the seedling P to plant it in the main field. The left and right sides of the seedling P are squeezed by the squeeze wheel.

Between the elastic disks of the seedling planting devices 40a, 40b, 40c, 40d and the seedling transfer belts 30a, 30b, a pair of short vertical conveyor belts 36a, 36b, 36c, 36d and a long vertical conveyor belt 37 which are extendable and retractable.
Short vertical conveyor belt 36 connected by a, 37b, 37c and 37d.
Long vertical conveyor belts 37a, 37b, 37c, 3 with a, 36b, 36c, 36d
The seedling P is sandwiched between 7d and conveyed downward. Therefore, each seedling planting device 40a, 40b, 40c, 40d moves up and down independently according to the unevenness of the field.

As described above, the seedlings P supplied to one seedling receiving section 3 are divided into left and right, and four seedling planting devices 40a, 40b, 40 are provided.
Delivered to c and 40d, and transplanted four rows at a time to this field.

Next, the operation of the seedling supply device of the transplanter will be described together with its effect.

If there is only one worker, the first seedling receiving belt
The conveying speed of 5a, 5b is set to be higher than the conveying speed of the second seedling receiving belts 6a, 6b, and the seedling P is separated from the standing seedlings by the separating tool 50.
Are laterally separated into one row and are inverted and supplied over both of the pair of first seedling receiving belts 5a and 5b as the seedling receiving portion 3 at one place.

At the time of supply, the seedlings in a row are not evenly supplied to both the first seedling receiving belts 5a and 5b, but the seedlings P
Will be supplied in a concentrated manner so that there will be a large number for those who tend to run short.
Then, after placing the seedling P on the first seedling receiving belts 5a and 5b, the arc-shaped needle 52 of the separating tool 50 is pulled out. The seedling P supplied over both of the pair of first seedling receiving belts 5a, 5b has a pair of first seedling receiving belts 5a, 5b by rotating the pair of first seedling receiving belts 5a, 5b in opposite directions. It is split left and right between 5b.

At this time, the seedling receiving belts 4a and 4b are composed of the first seedling receiving belts 5a and 5b and the second seedling receiving belts 6a and 6b, and the transport speed of the first seedling receiving belts 5a and 5b is set to the second seedling receiving belt. Belt 6
The seedlings P in a horizontal row are supplied over both the first seedling receiving belts 5a, 5b as the seedling receiving section 3 at one location, and the supplied horizontal seedlings P in a horizontal row. The first seedling receiving belts 5a, 5b are divided into left and right parts, and a gap due to a slight delay in the supply causes the first seedling receiving belts 5a, 5b and the second seedling receiving belt 6a,
The close contact between 6b makes it possible to quickly recover the delay in seedling supply, and the seedling supply work can be carried out with sufficient margin. Also,
Even if the supply is delayed beyond the predetermined gap where the seedling aligning devices 20a and 20b can be in close contact with each other, the planting can be carried out without a stock stall, so that a delay in the seedling supply of the operator can be more tolerated and the planting can be carried out without a stock stall.

When there are two workers, the first seedling receiving belt
The conveyance speed of 5a, 5b and the conveyance speed of the second seedling receiving belts 6a, 6b are the same, and the seedlings P are separated from the standing seedlings by the separating tool 50.
Are separated into one horizontal row, and left and right first seedling receiving belts 5a and 5b and second seedling receiving belts 6a and 6b as two seedling receiving portions.
Invert over and supply.

Next, the closely adhered seedling P rows reaching the delivery ends of the second seedling receiving belts 6a, 6b are separated into individual seedlings P by the vertical transport flat belts 7a, 7b and the vertical transport projection belts 8a, 8b. The seedlings are transported to the lower side, the missing seedlings are removed by the seedling selection devices 10a, 10b, and the misaligned seedling P rows are closely aligned by the seedling alignment devices 20a, 20b.

The seedlings P that have reached the delivery ends of the seedling alignment devices 20a, 20b
Are transferred to the seedling transfer belts 30a and 30b, and the seedling transfer belt 30
During the transportation of a and 30b, the seedling sorting devices 34a and 34b individually sort the seedlings left and right.

The seedlings P distributed to the left and right by the seedling distribution devices 34a and 34b are separated by a predetermined interval and are paired with a pair of short vertical conveyor belts 36a, 36b, 36c and 36d and a long vertical conveyor belt 37a, 37b.
37c, 37d, four seedling planting devices 40a, 40b, 40
It is delivered to c and 40d and transplanted to this field.

At this time, a pair of left and right seedling receiving belts 4a and 4b that rotate in opposite directions are provided in one seedling receiving portion 3 and the seedlings P closely aligned with the pair of left and right seedling receiving belts 4a and 4b.
The seedling transfer belts 30a and 30b are provided in series from the sending ends of the pair of left and right seedling receiving belts 4a and 4b.
30a, 30b are provided with seedling distribution devices 34a, 34b for separately conveying the individual seedlings P and alternately distributing the seedlings P conveyed by the pair of left and right seedling transfer belts 30a, 30b to the left and right paired seedlings. The seedling planting devices 40a, 40b, 40b
40c, 40d are provided in series, and a pair of left and right seedling receiving belts 4a, 4b
The seedlings P that have been divided into left and right by the seedling distribution device 34a, 34b
Since it is divided into left and right, one or two workers can transplant Shijo at once.

In the above examples, the seedling P is a paper-tube-assembled seedling in a paper-tube-assembled seedling-growing container, but the seedling-growing medium itself may be an inorganic fiber or a polymer compound forming the seedling-raising container. Even the seedlings taken out from the seedling raising container may be ones in a horizontal row.

In addition, although an example has been shown in which the worker uses the separating tool 50 to manually supply the seedlings P, it may be mechanically supplied by an automatic supply device.

The seedling receiving belts 4a and 4b are composed of first seedling receiving belts 5a and 5b and second seedling receiving belts 6a and 6b, and the speed of the first seedling receiving belts 5a and 5b is set to the second seedling receiving belt 6a. , 6b are shown as being larger than or equal to 6b, but the seedling receiving belt may be composed of a single belt.

In addition, an example has been shown in which seedling distribution devices 34a and 34b distribute left and right one by one while the seedling transfer belts 30a and 30b are being conveyed. 34b may be provided and the seedling distribution devices 34a and 34b may be conveyed by different belts.

[0076]

According to the invention of claim 1, a pair of left and right seedling receiving belts that rotate in opposite directions are provided in one seedling receiving portion, and seedlings closely aligned with the pair of left and right seedling receiving belts are supplied. However, the seedling transfer belts are provided in series from the sending ends of the pair of left and right seedling receiving belts. The seedling transfer belts convey individual seedlings separately, and the left and right seedling transfer belts alternately convey the seedlings left and right. A seedling distribution device that distributes seedlings to each side is provided, and a pair of left and right seedling distribution devices are connected to each seedling planting device, and seedlings that are divided into left and right by a pair of left and right seedling receiving belts are further separated by the seedling distribution device. Since it is divided into two, one worker can transplant Shijo at one time.

According to the invention of claim 2, the seedling receiving belt comprises the first seedling receiving belt and the second seedling receiving belt, and the conveying speed of the first seedling receiving belt is higher than the conveying speed of the second seedling receiving belt. And, a horizontal row of seedlings is supplied over both of the first seedling receiving belt as a single seedling receiving portion, the supplied horizontal row of seedlings is divided into left and right between the first seedling receiving belts, and a little Since the gap due to the delay in the supply of seedlings comes into close contact between the first seedling receiving belt and the second seedling receiving belt, the delay in supplying the seedlings can be immediately recovered and the seedling supply work can be performed with a margin. Further, even if the supply is delayed beyond a predetermined gap where the seedling aligning device can be in close contact, the planting can be performed without a stockout. Therefore, a delay in the seedling supply of the operator can be more tolerated and the planting can be carried out without a stockout.

[Brief description of drawings]

FIG. 1 is a rear view showing an example of a seedling supply device of a transplanter.

FIG. 2 is a partially enlarged view of the right side thereof.

FIG. 3 is a partially enlarged view of the left side thereof.

FIG. 4 is a partially enlarged plan view showing a main part of FIG.

FIG. 5 is a partially enlarged view showing a main part of FIG.

FIG. 6 is a partially enlarged view showing a main part of FIG.

FIG. 7 is a side view of the separating tool.

8 is a front view of FIG. 7. FIG.

[Explanation of symbols]

3 One seedling receiving section 4a, 4b belt for receiving seedlings 5a, 5b First seedling receiving belt 6a, 6b Second seedling receiving belt 30a, 30b seedling transfer belt 34a, 34b seedling distribution device 40a, 40b, 40c, 40d seedling planting device P seedling

Claims (2)

(57) [Claims] 1. In a transplanter for supplying seedlings separated in a horizontal row from aggregate seedlings such as paper tube seedlings, passing the seedlings to four seedling planting devices and transplanting them into this field, seedling receiving portions at one place are in opposite directions to each other. A pair of left and right seedling receiving belts that rotate around are provided, seedlings that are closely aligned with the pair of left and right seedling receiving belts are supplied, and seedling transfer belts are provided in series from the sending ends of the pair of left and right seedling receiving belts. Installs a seedling distribution device that separates individual seedlings and distributes them to the left and right alternately by a pair of left and right seedling transfer belts. A series of devices are installed, the supplied horizontal seedlings are divided into left and right between the seedling receiving belts, and the seedlings supplied to one seedling receiving part are divided into left and right and transferred to four seedling planting devices. Transplanter seedling supply device. 2. The seedling receiving belt comprises a first seedling receiving belt and a second seedling receiving belt, the conveying speed of the first seedling receiving belt is higher than the conveying speed of the second seedling receiving belt, and the horizontal row of seedlings are The seedling of the transplanter according to claim 1, wherein the seedlings are supplied over both of the first seedling receiving belts as one seedling receiving portion, and the supplied horizontal row of seedlings are divided into left and right between the first seedling receiving belts. Supply device.