JP2001028910A - Apparatus for conveying seedling - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus for conveying seedlings capable of shortening the distance of falling at the conveying terminal end of a pair of belts equipped with protrusions for conveying the separated seedlings in the nearly downward direction, preventing the disorder of a posture and changing the conveying direction into the nearly horizontal direction in a transplanter, etc., using the separated seedlings in transplanting cultivation of field crops. SOLUTION: This apparatus for conveying seedlings is obtained by installing a pair of elastic rollers 22 and 23 mutually oppositely on the lower side of the conveying terminal ends of a pair of belts 21 equipped with protrusions and arranging a third elastic roller 24 on the lower side of the pair of the elastic rollers 22 and 23, intersecting the positions of the pair of the elastic rollers 22 and 23 with the position of the third elastic roller 24 when viewed from the side and intersecting the position of the third elastic roller 24 with the positions of horizontal conveying belts 25 and 26 when viewed from the side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a transplanting machine for transplanting and cultivating agricultural crops. The present invention relates to a transplanting machine that uses seedlings separated into individual seedlings from collected seedlings such as a paper tube seedling in a container for collecting and raising seedlings. The present invention relates to a seedling transfer device that changes the transfer direction during transfer.

[0002]

2. Description of the Related Art A seedling transfer apparatus which separates individual seedlings from a collective seedling such as a paper tube seedling and changes the transfer direction while transferring the seedlings is disclosed in Japanese Utility Model Publication No. 5-30573 or Japanese Utility Model Publication No. 7-4.
No. 8007.

In the seedling transfer device disclosed in Japanese Utility Model Publication No. 5-305573, a transverse feed belt is provided below a seedling supply conveyor in a direction reverse to the transfer direction, and a transfer end portion of the seedling supply conveyor and a transfer start end portion of the transverse feed belt. A pair of vertical feed belts, one of the pair of vertical feed belts is a belt with protrusions, the other is a flat belt without protrusions, and a sponge roller is provided above the transfer end of the seedling supply conveyor. I have.

[0004] The seedlings are transported to the transporting end of the seedling supply conveyor, contacted with the belt with projections while being pressed by the sponge roller, separated, and transported downward by being sandwiched between the belts with projections and the flat belt. It falls from the transport end of the vertical feed belt and is transferred to the horizontal feed belt. At this time, the seedlings fall from near the lower end of the rotation of the flat belt, and the fall distance is shorter than when a pair of projecting belts is used.
The seedlings are urged toward the flat belt only by the elastic projections of the belt with projections, and fall in the transport direction of the lateral feed belt.
This is a first conventional example.

In the seedling transfer apparatus disclosed in Japanese Utility Model Publication No. 7-48007, a seedling supply conveyor and a seedling selection conveyor to be conveyed in the opposite direction are superposed vertically at required intervals, and the seedling supply conveyor is set at a delivery end. A part of the inclined conveyor that runs diagonally outward and downward ahead of the part, and an inclined conveyor that is shorter than the inclined traveling part outside the inclined traveling part, has its upper end at almost the same height as the sending end of the seedling supply conveyor. The lower end is positioned above the receiving end side of the seedling selection conveyor, and a presser wheel having the same peripheral speed as the transport speed of the seedling supply conveyor is axle mounted directly above the sending end of the seedling supply conveyor. A turning wheel having a peripheral speed slightly higher than the conveying speed of the seedling is supplied between the upper end of the inclined conveyor and the presser wheel and opposed to the arc of the delivery end of the seedling supply conveyor. Conveyor, inclined traveling part and inclined part A seedling separation wheel having a peripheral speed higher than the conveyor speed is mounted between the lower end of the inclined conveyor and the receiving end of the seedling sorting conveyor and at a position facing the lower end of the inclined traveling portion. .

[0006] The soil seedlings, which are supplied in a close row by the seedling supply conveyor, are pinched and conveyed in a tight row between the inclined traveling portion of the seedling supply conveyor and the inclined conveyor, and are received on the receiving end side of the seedling selection conveyor. The seedlings are separated from each other by a seedling separation wheel at the top and are received on a seedling sorting conveyor. The seedling supply conveyor has an inclined running section ahead of its sending end, so that the sending end and the inclined running section are continuous, and between the upper end of the inclined conveyor and the presser wheel, and At the position opposite to the arc of the delivery end of the supply conveyor, the turning wheel is shafted with its peripheral speed slightly faster than the transport speed of the seedling supply conveyor and its delivery end, so from the delivery end. The transfer of the seedling to the inclined traveling portion is smoothly performed without swinging. This is a second conventional example.

[0007]

A transfer device for changing the transfer direction from a substantially downward direction to a substantially horizontal direction in the technique according to the first conventional example is such that one of a pair of longitudinal feed belts is a belt with projections and the other is a belt with protrusions. Is a flat belt having no protrusions, and is dropped from the transport end portion of the vertical feed belt and transferred to the horizontal feed belt, thereby trying to overcome the drawbacks of using a pair of belts with protrusions.

[0008] Further, the transfer device for changing the transfer direction from a substantially downward direction to a substantially horizontal direction in the technique according to the second conventional example is separated into individual pieces by an inclined traveling portion of a seedling supply conveyor and a seedling separation wheel to form a seedling sorting conveyor. Immediate acceptance at short distances seeks to overcome the disadvantages of using a pair of protruding belts.

When the transport direction of the seedlings separated from the individual seedlings is changed from a substantially downward direction to a substantially horizontal direction, the disadvantage of using a pair of belts with projections is that the falling distance is long and the falling force is high. Then, the bouncing will cause the posture to be disturbed, and the impact will cause the soil to slip out. When the distance of fall is shortened by the pair of belts with projections, the seedlings on the lateral feed belt or the seedling selection conveyor are jumped off by the elastic projections of the belt with projections, and the posture is disturbed.

[0010] The transfer device for changing the transfer direction from a substantially horizontal direction to a substantially downward direction according to the technology according to the first conventional example, comprises: a transfer end portion of a seedling supply conveyor and a transfer start end portion of a lateral feed belt; , And a sponge roller is provided above the transfer end of the seedling supply conveyor. Then, the seedlings are transported to the transport terminal end of the seedling supply conveyor, and contacted with the projection belt of the vertical feed belt while being pressed by the sponge roller, and separated.

That is, a sponge roller is required because the sponge roller separates a row of seedlings connected in a row into individual seedlings and does not change the transport direction of the seedlings separated into individual seedlings.

According to the second prior art, the transfer device for changing the transfer direction from a substantially horizontal direction to a substantially downward direction is characterized in that the seedling supply conveyor has an inclined traveling portion in front of the delivery end, and the outside of the inclined traveling portion. A shorter inclined conveyor than the inclined traveling section
A position where the presser wheel is supported directly above the delivery end of the seedling supply conveyor, and the direction changing wheel is between the upper end of the inclined conveyor and the presser wheel and faces the arc of the delivery end of the seedling supply conveyor. Is mounted on the shaft. Then, the seedlings supplied in a close line by the seedling supply conveyor are smoothly moved from the sending end to the inclined traveling part without swinging.

In other words, the holding wheel and the direction changing wheel transfer the row of seedlings connected in a row to the inclined traveling section as it is, and do not change the transport direction of the seedlings separated into individual seedlings. And need a turning wheel.

When the transport direction of the seedlings separated into the individual seedlings is changed from a substantially horizontal direction to a substantially downward direction, the transfer direction is changed without using a sponge roller, a holding wheel, and a turning wheel. An extra seedling holding ring can be omitted.

According to the present invention, a pair of projecting belts conveyed in a substantially downward direction are conveyed in a substantially horizontal direction by shortening the distance of fall and preventing a disturbance in posture and changing the conveyance direction in a substantially horizontal direction. Omit the extra seedling holding wheel above the transport end,
It is an object of the present invention to provide a seedling transfer device that changes a transfer direction substantially downward.

[0016]

According to a first aspect of the present invention, there is provided an apparatus for transporting seedlings, wherein the seedlings P separated into individual seedlings are continuously transported and the transport direction is changed from substantially downward to substantially horizontal. In the apparatus, a pair of belts with projections facing each other
21 and a pair of belts 21 with projections
Are transported substantially downward with the interposition therebetween, and horizontal transport belts 25 and 26 are provided below the transport end of the pair of belts 21 with projections, and the horizontal transport belts 25 and 26 transport the seedlings P on the upper surface thereof and transport in a substantially horizontal direction. In addition, a pair of elastic rollers 22 and 23 and a third elastic roller 24 that rotate between the transport end of the pair of protrusion-attached belts 21 and the transport start end of the horizontal transport belts 25 and 26 are provided. Are provided opposite to each other below the transport end of the pair of belts 21 with projections, the pair of elastic rollers 22 and 23 transport the seedling P substantially downward with the seedling P interposed therebetween, and the third elastic roller 24 is A third elastic roller 24 is provided below a pair of elastic rollers 22 and 23 at the end of conveyance, and a third elastic roller 24 is
The pair of elastic rollers 22 and 23 and the third elastic roller 24 are located in the conveying direction of the horizontal conveying belts 25 and 26 from immediately below the pair of elastic rollers 23 located on the conveyance start end side of the pair 26. The third elastic roller 24 and the horizontal transport belts 25 and 26 exchange their positions in a side view.

A seedling transfer device according to a second aspect of the present invention is a transfer device for changing the transfer direction from substantially horizontal to substantially downward while continuously transferring seedlings P separated into individual seedlings. Horizontally inclined conveying belts 26, 27, 28 for carrying the P on the obliquely downward direction from a substantially horizontal direction are provided, and a belt 30 with a projection is provided opposite the obliquely downwardly conveying portion 29 of the horizontally inclined conveying belts 26, 27, 28. The belt 30 with the projections and the obliquely downward conveying portion 29 of the horizontal inclined conveying belts 26, 27, 28 convey the seedlings P between the opposing surfaces in a substantially downward direction. Is set above the horizontal conveying portions of the horizontal inclined conveying belts 26, 27, 28,
No seedling holding ring is arranged above the transport end of the horizontal transport portions 27 and 28.

[0018]

According to the first aspect of the present invention, a pair of elastic rollers 22 and 23 and a third elastic roller which rotate between the transport end of a pair of belts 21 with projections and the transport start of horizontal belts 25 and 26 are provided. A pair of elastic rollers 22 and 23 are provided opposite to each other below the conveyance end of the pair of belts 21 with projections, and the pair of elastic rollers 22 and 23 are substantially lower with the seedling P interposed therebetween. Transport in the direction, the horizontal transport belt 25,
A pair of elastic rollers 22 and 23 are located between the seedlings P on the pair 26 and the pair of belts 21 with projections.
The elastic projections 21a of the pair of projection-equipped belts 21 do not come into contact with each other.
The pair of elastic rollers 22 and 23 transport the seedlings P substantially downward, and the transport direction of the seedlings P is substantially the same. Of the seedlings P, and the falling distance of the seedlings P can be shortened.

The third elastic roller 24 is provided below the transport end of the pair of elastic rollers 22 and 23, and the third elastic roller 24 is a pair of elastic rollers positioned on the transport start end side of the horizontal transport belts 25 and 26. Horizontal conveyor belts 25, 26 directly below 23
Is located in the transport direction of the pair of elastic rollers 22 and 23
The seedlings P fed out from the container contact the third elastic roller 24, and are moved by the third elastic roller 24 to the horizontal transport belts 25 and 26.
In the transport direction.

Further, the pair of elastic rollers 22, 23 and the third elastic roller 24 cross their positions in a side view, and the third elastic roller 24 and the horizontal transport belts 25, 26 cross their positions in a side view. The height from the pair of elastic rollers 22 and 23 to the horizontal transport belts 25 and 26 can be reduced, and the falling distance of the seedlings P is shortened.

According to the second aspect of the present invention, the transport start end of the belt with protrusions 30 is located above the horizontal transport portions of the horizontal inclined transport belts 26, 27, 28, and the horizontal transport portions of the horizontal inclined transport belts 26, 27, 28 are provided. No seedling holding ring is disposed above the transport end of the seedling P. The seedlings P, which are placed on the horizontal transport portions of the horizontal inclined transport belts 26, 27 and 28 and transported to the transport end, are the horizontal inclined transport belts of the belt 30 with projections. 26, 27, and 28, contact the upper part of the horizontal conveying part, and change the conveying direction substantially downward, the belt 30 with the protrusion and the horizontal inclined conveying belts 26, 27, and
The sheet is conveyed almost downward sandwiched between the obliquely downward conveying section 29 of FIG.

[0022]

An embodiment of the present invention will be described below with reference to the drawings.

[0023] Seedlings P for transplantation are shown as seedlings.
The seedlings P include bare seedlings with exposed roots and soild seedlings with the roots covered with soil.

As the seedlings P separated into individual seedlings, a paper tube seedling whose root is covered with cultivated soil by a paper tube collecting seedling container is shown. In this paper tube collecting and growing seedling container, a large number of paper tubes having a hexagonal column shape opened at the top and bottom when opened are stuck together with glue in an orderly manner. When the seedlings are sown by cultivating the seedlings in the paper cylinder and seeding, the seedlings grow into a group of seedlings, and at the time of transplantation, are connected to the individual seedlings P so as to be separable and maintain an appropriate connection strength.

The seedlings P in the individual seedling-collected seedling-raising containers are wrapped in soil in a paper cylinder, but if they fall vigorously and give an impact, the soil will come off and cause root damage, The removed soil adheres to the belt and is difficult to handle for the treatment.

Next, a transplanting machine for four-rows, which is equipped with a seedling transfer device that changes the direction while continuously transferring the seedlings P separated into individual seedlings, and that transplants four rows at a time to the main field, will be described. I do.

In FIG. 1, reference numeral 1 denotes a machine frame. The machine frame 1 has a substantially rectangular frame in plan view, and is attached to a tractor (not shown) to be towed and travel. An upper frame 2 is provided above the machine frame 1, a seedling mounting table 3 is provided above, below, right and center of the upper frame 2, and a pair of ground wheels 4 are provided below and below the machine frame 1. Numeral 4 is grounded on the field surface and is rotated by the advance of the machine frame 1 to supply power to the apparatus.

Four sets of seedling separation devices 10 are provided in the upper frame 2 below the seedling mounting table 3, and the seedling separation devices 10 automatically separate the supplied paper tube assembly seedlings into individual seedlings P and separate them. A long seedling sorting and aligning device frame 5 is provided on the machine casing 1 to the left and right.
On top, four sets of seedling selection and alignment devices 20 are provided. Seedling sorting equipment
20 removes defective seedlings having no leaves from the separated and separated seedlings P by a seedling sorting device 31 and once closely aligns the rows of seedlings P with irregular intervals by a seedling alignment device 32, and then removes the seedlings at a predetermined interval. The seedlings P are transferred to the planting device 40 every time.

Four sets of planting devices 40 are provided between the seedling sorting and aligning device 20 and the field surface. The planting devices 40 are a pair of elastic disks, and are transferred from the seedling sorting and aligning device 20 in a horizontal state. The four seeds are planted at once in the field with the seedlings P standing upright.

Next, a description will be given of a transfer device that changes the transfer direction from substantially downward to substantially horizontal while continuously transferring the seedlings P separated into individual seedlings.

A pair of projecting belts 21 are provided in a substantially vertical direction between the seedling separating device 10 and the seedling sorting and aligning device 20, and the pair of projecting belts 21 are separated by the seedling separating device 10 in a substantially vertical state and separated. The seedlings P are continuously turned in a horizontal state in a substantially vertical plane, conveyed substantially downward in a horizontal state, and transferred to a seedling sorting and sorting apparatus 20 at the end of the conveyance.

The pair of projecting belts 21 are provided along the inclination of the seedling separating device 10 and the inclination angle is 7.5 degrees from the vertical direction in the embodiment.
Will be described ignoring the inclination angle for convenience of explanation. The pair of projecting belts 21 oppose each other, and the opposing surfaces circulate downward at the same peripheral speed at the transport end, and convey the seedlings P between the opposing surfaces at the transport end in the downward direction.

The pair of projecting belts 21 are made of soft rubber, and the pair of projecting belts 21 have a large number of wing-strips arranged at both ends in the width direction of the surface at equal intervals smaller than the diameter of the paper cylinder of the seedlings P. Elastic projections 21a are provided, and the pair of belts 21 with the projections are conveyed by sandwiching the upper and lower portions of the middle portion of the seedling P between the paper cylinders by the elastic projections 21a between the opposing surfaces.

A horizontal transport belt 25 and a horizontal inclined transport belt 26 as a horizontal transport belt are provided substantially horizontally below the transport end of the pair of belts 21 with projections.
26 circulates at the same peripheral speed, and transports the seedlings P on the upper surface thereof in a substantially horizontal direction. The horizontal transport belt 25 supports the upper part of the paper cylinder of the seedlings P, the horizontal inclined transport belt 26 supports the lower part of the paper cylinder of the seedlings P, and the horizontal transport belt 25 has a length up to the seedling sorting device 31 and its tip is missing. It is a sorting space, and the belt of the seedling sorting device 31 pinches and transports the leaf blade of the seedling P corresponding to the sorting space, thereby dropping and removing defective seedlings having no or short leaf blade.

A pair of sponge-shaped elastic rollers 22 and 23 and a third elastic roller 24 are provided between the transport end of the pair of belts 21 with projections and the transport start ends of the horizontal transport belts 25 and 26.

The pair of elastic rollers 22 and 23 are provided opposite to each other below the conveying end of the pair of projecting belts 21, and their opposing surfaces are narrower than the diameter of the paper cylinder of the seedling P and rotate downward at the same peripheral speed. The pair of elastic rollers 22 and 23 transport the seedling P substantially downward with the seedling P interposed therebetween. A pair of elastic rollers 22 and 23 are provided two each to support the upper and lower parts of the paper tube of the seedling P, and the position in contact with the seedling P almost coincides with the elastic projections 21a of the pair of belts 21 with projections. The rotating arc at the tip of the elastic projection 21a and the outer periphery of the pair of elastic rollers 22 and 23 are brought close to each other so as to be almost in contact with each other.

The third elastic roller 24 is provided below the pair of elastic rollers 22 and 23 at the end of conveyance, and the elastic roller 22 and the third elastic roller
Of the elastic roller 24 is wider than the diameter of the paper tube of the seedling P. The third elastic roller 24 is a horizontal transfer belt 2 in rear view.
Located in the transport direction of the horizontal transport belts 25 and 26 from directly below the elastic roller 23 located at the transport start end side of the transport rollers 5 and 26, rotates at the same circumferential speed in the same direction as the elastic roller 23, and is positioned at the middle of the paper cylinder of the seedling P. I support.

The pair of elastic rollers 22 and 23 and the third elastic roller 24 cross their positions in a side view, that is, the pair of elastic rollers 22 and 23 support the upper and lower portions of the paper tube of the seedling P and support the third and third elastic rollers.
The elastic roller 24 of the seedling P supports the middle portion of the paper cylinder of the seedling P, so that the elastic roller 23 and the third elastic roller 24
Are overlapping.

Third elastic roller 24 and horizontal transport belt 2
The positions 5 and 26 cross each other in a side view, that is, the third elastic roller 24 supports the middle portion of the seedling P in the paper cylinder and the horizontal transport belt.
25 and 26 support the upper and lower portions of the paper cylinder, so that the third elastic roller 24 and the horizontal transport belts 25 and 26 overlap when viewed from the rear.

Next, a description will be given of a transfer device that changes the transfer direction from a substantially horizontal direction to a substantially downward direction while continuously transferring the seedlings P separated into individual seedlings.

The horizontal inclined transport belt 26 carries the seedlings P on the upper surface and transports the seedlings P from substantially horizontal to obliquely downward. On the extension of the horizontal transport belt 25, a horizontal inclined transport belt 28 with a sorting space interposed is provided. A horizontal inclined conveying belt 27 is provided between the horizontal inclined conveying belt 26 and the horizontal inclined conveying belt 28, and the horizontal inclined conveying belts 27, 28 also carry the seedlings P on the upper surface and convey the seedlings P substantially horizontally from obliquely downward. Horizontally inclined conveyor belt 26 is seedling P
, The horizontal inclined conveyance belt 27 supports the middle part of the seedling P paper cylinder, and the horizontal inclined conveyance belt 28 supports the seedling P upper part of the paper cylinder.

The transport ends of the horizontal transport portions of the horizontal inclined transport belts 26, 27, 28 are the same, and the portion that is transported diagonally downward is formed on the same surface. And

A projecting belt 30 is provided opposite to the obliquely downward conveying portion 29 of the horizontally inclined conveying belts 26, 27, and 28.
The seedling P is conveyed substantially downward by the 30 and the obliquely downward conveying portion 29 of the horizontally inclined conveying belts 26, 27, 28 with the seedling P interposed therebetween.

The protruding belt 30 is made of soft rubber,
The projection belt 30 is provided with a large number of wing-piece-like elastic projections 30a arranged at equal intervals smaller than the diameter of the paper tube of the seedling P at both ends in the width direction of the surface. The seedlings P are conveyed by sandwiching the upper and lower portions of the middle portion of the paper cylinder by the elastic projections 30a between the surfaces facing the same.

The transport start end, which is the upper side of the belt 30 with projections, protrudes above the horizontal transport portions of the horizontally inclined transport belts 26, 27, 28. And the horizontal inclined conveyor belt 2
The seedlings P placed on the horizontal transport portions 6, 27 and 28 and transported to the transport terminal end are in positions where they come into contact with the portions protruding above the belt 30 with projections.

Note that no seedling holding ring or the like for holding the seedlings P between the horizontal inclined conveying belts 26, 27, and 28 is provided above the conveying end of the horizontal conveying portions of the horizontal inclined conveying belts 26, 27, and 28.

Next, the operation of the seedling transfer device will be described together with its effects.

The paper tube aggregate seedlings supplied to the transplanter are separated into individual seedlings by the seedling separation device 10 and become separated seedlings P.
The sheet is conveyed substantially downward in a horizontal state while being sandwiched between the pair of belts 21 with projections.

The seedlings P that have reached the transporting end of the pair of projecting belts 21 fall onto a pair of elastic rollers 22 and 23 and are delivered.

At this time, the pair of elastic rollers 22 and 23 are provided to be opposed to each other below the conveying end of the pair of belts 21 with projections, and the pair of elastic rollers 22 and 23 are substantially sandwiching the seedling P between the opposing surfaces. Conveyed downward, a pair of elastic rollers 22 and 23
Transports the seedlings P substantially downward, and since the transporting direction of the seedlings P is substantially the same, the height from the transport end of the pair of belts 21 with projections to the pair of elastic rollers 22 and 23 can be reduced. The falling distance of the seedling P is reduced, and the posture is not disturbed by the bouncing of the seedling P, and the seedling P is not damaged by the impact of the dropping.

The seedlings P transferred to the pair of elastic rollers 22 and 23 are conveyed substantially downward while being sandwiched between the pair of elastic rollers 22 and 23, and fall on the third elastic roller 24 to be transferred. It is.

The seedling P dropped on the third elastic roller 24
Changes the falling direction from almost downward to almost horizontal without being restrained by the elastic roller 22,
It is dropped on the transfer start end of 5, 26 and delivered.

At this time, the third elastic roller 24 is provided below the transport end of the pair of elastic rollers 22 and 23, and the third elastic roller 24 is a pair of elastic rollers positioned on the transport start end side of the horizontal transport belts 25 and 26. Horizontal conveyor belt 2 from directly below roller 23
The pair of elastic rollers 22 and 23 are located in the transport direction of
The seedlings P fed out from the container contact the third elastic roller 24, and are moved by the third elastic roller 24 to the horizontal transport belts 25 and 26.
, The fall in the downward direction is reduced, and the posture of the seedlings P is not disturbed by bouncing, and the seedlings P are not damaged by the impact of the fall.

Further, the pair of elastic rollers 22 and 23 and the third elastic roller 24 cross their positions in a side view, and the third elastic roller 24 and the horizontal transport belts 25 and 26 cross their positions in a side view. Since the height from the pair of elastic rollers 22 and 23 to the horizontal transport belts 25 and 26 can be reduced, the falling distance of the seedlings P is shortened, the posture of the seedlings P is disturbed by bouncing, and the seedlings P are damaged by the impact of the dropping. There is nothing.

The seedlings P delivered to the transport start ends of the horizontal transport belts 25 and 26 are transported in a substantially horizontal direction as they are, and the seedling selection device is held while the lower part of the paper cylinder of the seedlings P is supported by the horizontal inclined transport belt 26. 31 removes bad seedlings.

At this time, a pair of elastic rollers 22 and 23 which rotate between the transport end of the pair of belts 21 with projections and the transport start ends of the horizontal transport belts 25 and 26 are provided.
2 and 23 are provided opposite to each other below the conveyance end of the pair of projection belts 21, and a pair of elastic rollers 22 and 23 are positioned between the seedlings P on the horizontal conveyance belts 25 and 26 and the pair of projection belts 21. Since the elastic projections 21a of the pair of projection belts 21 do not contact the seedlings P on the horizontal transport belts 25 and 26,
The seedlings P on 5 and 26 are not jumped off by the elastic projections 21a of the pair of projection belts 21 and the posture is not disturbed.

The defective seedlings are removed by the seedling selection device 31, and the spacing of only the good seedlings becomes irregular. The separated seedlings P are continuously supported by the horizontal inclined conveying belt 26 at the lower part of the paper cylinder of the seedlings P, and the horizontal inclined conveying belt 27. , 28 are passed over the middle portion and the upper portion of the paper tube of seedling P.

The seedlings P that have reached the transport end of the horizontal transport portions of the horizontal inclined transport belts 26, 27, and 28 have their transport direction changed substantially downward by the belt 30 with projections.
And slanting downward conveying belt of horizontal inclined conveyor belts 26, 27 and 28
It is conveyed almost downward by being sandwiched between 29 and.

At this time, the transport start end of the projection belt 30 is set above the horizontal transport portion of the horizontal inclined transport belts 26, 27 and 28, and the transport end of the horizontal transport portion of the horizontal inclined transport belts 26, 27 and 28 is located above the transport end. The seedlings P, which are placed on the horizontal conveying portions of the horizontal inclined conveying belts 26, 27, 28 and conveyed to the conveying end, are not arranged on the horizontal inclined conveying belts 26, 27, 28, the conveyance direction is changed substantially downward, and the conveyance direction is changed substantially downward, and the conveyance direction is substantially sandwiched between the belt 30 with the projections and the obliquely downward conveyance portion 29 of the horizontal inclined conveyance belts 26, 27, 28. Because it is transported downward,
The cost is reduced by omitting an extra seedling holding wheel.

The projection belt 30 and the horizontally inclined conveyance belt 26,
Seedlings P that have reached the transport end of the diagonally downward transport part 29 of 27 and 28
Is dropped on the seedling alignment device 32 and delivered.

The seedlings P transferred to the seedling aligning device 32 are closely aligned and then transferred to the planting device 40 at predetermined intervals and planted in the field.

In the above embodiment, the seedlings P are the ones formed by the cylinders for raising the seedlings in the container for raising the seedlings. However, even if the medium for raising the seedlings itself is made of the inorganic fiber or the polymer compound forming the container for raising the seedlings, The individual seedlings taken out of the seedling raising container may be those that are separated into individual seedlings.

Although an example is shown in which a large number of wing-like elastic projections 21a are provided as the pair of projection-like belts 21, the projections of the pair of projection-like belts 21 may be conical or brush-like.

Also, an example is shown in which the third elastic roller 24 crosses its position in a side view inside the pair of elastic rollers 22, 23 and the horizontal transport belts 25, 26.
24 may cross their positions on the outside.

Also, an example is shown in which a large number of wing-shaped elastic projections 30a are provided as the belt 30 with projections.
The protrusions may be conical or brush-shaped.

[0066]

According to the first aspect of the present invention, there is provided a pair of elastic rollers that rotate between the transport end of the pair of projection belts and the transport start end of the horizontal transport belt, and the pair of elastic rollers has a pair of projections. A pair of elastic rollers are located between the seedlings on the horizontal conveyor belt and the pair of projecting belts, and are provided between the seedlings on the horizontal conveying belt and the pair of elastic belts on the horizontal conveying belt. Does not contact, the seedlings on the horizontal transport belt are not jumped by the elastic projections of the pair of projection belts, and the posture is not disturbed.

Further, a pair of elastic rollers are provided opposite to each other below the conveying end of the pair of belts with projections, and the pair of elastic rollers convey the seedling substantially downward with the seedling between the opposing surfaces. The rollers transport the seedlings almost downward, and the direction of transport of the seedlings is almost the same, so that the height from the transport end of the pair of belts with projections to the pair of elastic rollers can be reduced, so that the falling distance of the seedlings is reduced. The seedlings do not bounce, disturb the posture, and do not damage the seedlings due to the impact of falling.

The third elastic roller is provided below the end of the pair of elastic rollers in the conveying direction, and the third elastic roller is arranged to convey the horizontal conveying belt from immediately below the pair of elastic rollers located at the starting end of the horizontal conveying belt. And the seedlings fed from the pair of elastic rollers contact the third elastic roller and are urged by the third elastic roller in the transport direction of the horizontal transport belt. It is reduced so that the seedlings do not bounce and disturb the posture, and do not damage the seedlings due to the impact of falling.

The pair of elastic rollers and the third elastic roller cross their positions in a side view, the third elastic roller and the horizontal conveying belt cross their positions in a side view, and the horizontal conveying belt Since the height of the seedlings can be reduced, the falling distance of the seedlings is shortened, and the seedlings do not bounce and disturb the posture, and the seedlings are not damaged by the impact of the dropping.

According to the second aspect of the present invention, the transport start end of the belt with protrusions is located above the horizontal transport portion of the horizontal inclined transport belt, and the seedling presser wheel is located above the transport end of the horizontal transport portion of the horizontal inclined transport belt. So that the seedlings placed on the horizontal transport portion of the horizontal inclined transport belt and transported to the transport end contact the portion above the horizontal transport portion of the horizontal inclined transport belt of the protruding belt, and are almost downward. The conveying direction is changed, and the sheet is conveyed almost downward by being sandwiched between the belt with projections and the obliquely downward conveying portion of the horizontally inclined conveying belt, so that an unnecessary seed presser wheel is omitted and the cost is reduced.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of a transplanter equipped with a seedling transfer device.

FIG. 2 is a side view thereof.

FIG. 3 is a rear view showing the main part.

FIG. 4 is a partially enlarged view of FIG. 3;

FIG. 5 is a partially enlarged view of FIG. 4 with a part cut away.

FIG. 6 is a partially enlarged view of FIG. 5;

FIG. 7 is a partially enlarged view of FIG. 5;

FIG. 8 is a side view of FIG. 6;

FIG. 9 is a plan view of FIG. 7;

[Explanation of symbols]

 21 A pair of belts with projections 22, 23 A pair of elastic rollers 24 A third elastic roller 25 A horizontal conveyor belt 26 A horizontal conveyor belt or a horizontal inclined conveyor belt 27, 28 A horizontal inclined conveyor belt 29 An inclined downward conveyor part 30 A belt with projections P Seedling

Claims (2)

[Claims] 1. A transport device for changing a transport direction from a substantially downward direction to a substantially horizontal direction while continuously transporting seedlings separated into individual seedlings, wherein a pair of belts with projections facing each other are provided, and a pair of projections is provided. The attached belt conveys the seedlings between the opposing surfaces in a substantially downward direction, and a horizontal conveyor belt is provided below the conveying end of the pair of projecting belts. A pair of elastic rollers and a third elastic roller which convey and rotate between the transport end of the pair of projection belts and the transport start end of the horizontal transport belt are provided, and the pair of elastic rollers are below the transport end of the pair of projection belts. And a pair of elastic rollers are conveyed substantially downward with the seedling therebetween, and a third elastic roller is provided below a conveying end of the pair of elastic rollers.
Elastic roller is located in the transport direction of the horizontal transport belt from directly below the pair of elastic rollers located on the transport start end side of the horizontal transport belt, the pair of elastic rollers and the third elastic roller cross the position in side view, A seedling conveying device in which the third elastic roller and the horizontal conveying belt cross their positions in a side view. 2. A transfer device for changing a transfer direction from a substantially horizontal direction to a substantially downward direction while continuously transferring seedlings separated into individual seedlings, wherein the seedlings are placed on an upper surface and obliquely downward from a substantially horizontal direction. A horizontal inclined conveying belt for conveying is provided, and a belt with a projection is provided opposite to the obliquely downward conveying portion of the horizontal inclined conveying belt, and between the opposed surface between the projecting belt and the obliquely downward conveying portion of the horizontal inclined conveying belt. The seedlings are conveyed almost downward, the starting end of the belt with protrusions is set above the horizontal conveying part of the horizontal inclined conveying belt, and a seedling holding wheel is provided above the conveying end of the horizontal conveying part of the horizontal inclined conveying belt. Seedling transfer equipment not to be distributed.