JPH0155843B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present application relates to a seedling supply device for a transplanter, and relates to a device for sequentially supplying seedlings grown in paper tubes or the like from a seedling supply section to a seedling planting section.

When planting seedlings mechanically using a transplanter, the seedlings are raised in advance using paper tubes, etc. in an orderly manner and in a state where they can be separated one by one. The seedlings are separated into pieces and supplied to a transplanter, and the supplied seedlings are planted one by one.

The seedlings grown in paper tubes or the like are sequentially supplied onto the conveyor in the seedling supply section of the transplanter, and the seedlings are sequentially transferred from this supply conveyor to the seedling planting section where the seedlings are held and planted one by one. However, the present invention was proposed for the purpose of ensuring that seedlings are transferred between such a supply conveyor and a seedling planting section.

Conventionally, in this type of seedling feeding device, a separation roller with a sponge is used at the end of the feeding conveyor to separate and feed seedlings in rows, but in this case, each seedling is separated from a paper tube. However, when transplanting a large quantity of sugar beet seedlings, etc., the leaves of the seedlings become elongated and intertwined with each other due to delays in the planting season, so it is difficult to separate them using only a separation roller with a sponge. Because the forcing force is temporary, even if it is possible to separate the paper tubes one by one, the paper tubes are connected to each other due to the leaves mentioned above,
There were drawbacks such as the paper tube falling diagonally.

Therefore, in the present invention, the forcing force for separation is made continuous to eliminate free fall.

Furthermore, we have also tried to eliminate changes in the posture of the seedlings during transport.

Furthermore, although the sponge used for the separation roller is inexpensive, it lacks durability and loses its elasticity due to clogging with earth and sand. It is easy to remove, with little clogging caused by soil and sand.

Embodiments of the present invention will be described based on the drawings.

There is a mounting hole in the front of Machine 1 for connecting it to a tractor (not shown), a seat 3 for a worker to sit on, and a seat 3 is provided at the bottom of Machine 1 for compacting the topsoil. A pressure roller 2 is installed, and the function 1
A seedling mounting stand 4 is provided at the rear upper part of the seedling stand 4 on which the paper tube group of seedlings is placed.

Further, a planting unit frame 5 for attaching a seedling supply section and a seedling planting section is attached to the central lower part of the device 1 so as to be rotatable in the vertical direction.

In addition, a pair of pressure wheels 6 are provided on the rear left and right sides of the planting unit frame 5 for calming the planted seedlings in the field, and in front of the pressure wheels 6 are a pair of rubber wheels for holding and planting the seedlings. A disk 7 is provided.

In order to hold the outer periphery of approximately a quarter of the rubber disk 7 with a certain degree of clamping force, a rubber disk presser 8 consisting of rollers attached to a large number of leaf springs is provided.

Furthermore, a groove opener 9 for cutting grooves for planting seedlings in the field is provided at the front lower part of the planting unit frame 5.

In front of the rubber disk 7, a long conveyor 12 and a short conveyor 13 for holding the seedlings on the upper part of the planting unit frame 5 and delivering the seedlings to the rubber disk 7 are provided substantially vertically facing each other.

That is, a long transport conveyor 12 is provided below the transport end of the supply conveyor 10, and a short transport conveyor 13 is provided below the lower surface of the transport end of the supply conveyor 10.

Long conveyor 12 and short conveyor 13
The terminal ends of the transport conveyor 12, which is longer than the starting end of the rubber disc presser 8, and the terminal end of the transport conveyor 13, which is shorter than the starting end of the rubber disc presser 8, are arranged slightly downward so that the seedlings are temporarily held together with the rubber disc 7.

The supply conveyor 10 is provided substantially horizontally with a starting end slightly higher so that the conveying end is located above the starting end of the short conveyor 13 and below the starting end of the long conveyor 12.

The space surrounded by the supply conveyor 10, the long conveyor 12, and the short conveyor 13 is arranged so that a single seedling 17 does not move loosely, and a fixing piece 18 may be provided in some cases.

A pressing roller 11 is placed above the conveyance end of the supply conveyor 10 so as to hold the seedlings 17 between the supply conveyor 10.
will be established.

The seedlings 17 arranged in a row on the upper surface of the supply conveyor 10 are transferred by an operator toward the terminal end of the supply conveyor 10, and are held between the presser roller 11 and the upper part of the transport terminal end of the supply conveyor 10.

At this time, the pressing roller 11 has a large number of projections 12A and 13A made of sponge or rubber-like material attached to its surface so as to wrap around the seedling 17 so as to sufficiently hold the seedling 17 therein.

When the seedlings 17 coming out of the presser roller 11 hit the starting end of the long conveyor 12, the conveying speed of the long conveyor 12 is usually 10 to 20 times faster than the conveying speed of the supply conveyor 10. The seedlings 17 are rapidly transferred to the starting end of the short conveyor 13 while being pressed against the end of the supply conveyor 10 by the long conveyor 12.

At this time, the distance between the starting end of the long conveyor 12 and the presser roller 11 and the supply conveyor pulley 1
If the diameter of 4 and the diameter of the presser roller 11 are appropriately selected according to the size of the paper tube seedlings, when the seedlings 17 are separated and transferred by the long conveyor 12, the seedlings to be separated and transferred next will be transferred to the presser roller 11. The paper cylinder seedlings are held tightly together, and even if the adhesive on the paper cylinder seedlings is not peeled off properly, or there are leaves or roots involved, the seedlings can be separated and transferred one by one.

The seedlings 17 separated and transferred by the long conveyor 12 reach the starting end of the short conveyor 13, but during this time, while the seedlings 17 are pressed against the end of the supply conveyor 10, they are not forced to fall freely. will be transferred to.

Furthermore, if a fixing piece 18 is provided between the end of the supply conveyor 10 and the short conveyor 13 as shown in FIG. Even if the seedlings 17 are free-falling when used alone in combination with 13, the seedlings 17 will be transferred without any free-falling, and even seedlings with significant leaf tangles can be reliably supplied without damaging their transfer posture. .

The surfaces of the long conveyor 12 and the short conveyor 13 are provided with a large number of protrusions 12A and 13A made of a rubber-like material, such as natural rubber, synthetic rubber, soft vinyl chloride, etc. Any material that can be used and molded is convenient for manufacturing.

Although the protrusions are arranged in a row perpendicular to the conveyance direction of the conveyor, independent cylindrical protrusions may be provided in a row, or a plurality of wing-shaped protrusions may be arranged.

The thickness or thickness of the protrusion is usually about 2 to 3 mm, and the length is preferably at least half the outer diameter of the paper tube.

The pitch of the protrusions arranged in the conveyance direction of the conveyor should be less than or equal to the diameter of the paper tube, but it is usually about half the diameter of the paper tube.

In addition, for the material of the belts of both conveyors, it is convenient for manufacturing to use a rubber-like material, and depending on the shape of the paper tube seedlings, the length of the protrusions should be small enough to prevent slipping. You can also do that.

The seedlings 17 that have reached the starting end of the short conveyor 13 are held between the protrusions of both conveyors so that the pitch of the protrusions 12A and 13A is less than the diameter of the paper tube, and the seedlings 17 are held between the protrusions of both conveyors. transferred to the terminal end of the

At this time, if the transport speeds of both transport conveyors are appropriately selected, the seedlings 17 can be separated by a distance equivalent to the distance between the plants to be planted.

Since the drive pulley 15 of the long conveyor 12 and the drive pulley 16 of the short conveyor 13 are interlocked by a pair of spur gears with the same number of teeth, the transfer speeds of both conveyors 12 and 13 are the same, and the seedlings 17 will be transported while being held in place.

Protrusions 12A of both conveyors 12 and 13,
13A also has the effect of preventing the attitude from changing due to the vibration of the machine body when the seedling 17 is held between the legs, compared to a case where the surface is smooth such as a sponge-like substance.

Long conveyor 12 and short conveyor 13
The seedlings 17 transferred to the end of the rubber disk 7 are transferred to the rubber disk 7, and are transferred while being held by the rubber disk presser 8. When the seedling 17 reaches almost the lower end of the rubber disk 7, the holding force of the rubber disk presser 8 is cut off. The seedlings are placed vertically in a groove cut in the field by the trench opener 9, and at the same time, the soil is gathered by the pressure wheel 6, the soil is compacted around the seedlings, and the seedlings are planted in the field.

According to the present invention, since the seedlings are continuously transferred, they can be reliably supplied to the planting section without any disturbance in their posture, regardless of the condition of the paper tube, etc., and the peeling of the glue from the paper tube seedlings Even if there is a problem with leaves, roots, etc., they will be reliably separated and fed smoothly.Furthermore, the component parts will have good durability and can be easily maintained.

[Brief explanation of drawings]

Figure 1 is a plan view, Figure 2 is a side view, Figure 3 is a view in the direction of arrow A in Figure 1, Figure 4 is an enlarged view of part B of the same as above, Figure 5 is an enlarged view of the main part of Figure 3. It is a diagram. 10... Supply conveyor, 11... Presser roller, 12... Long conveyor, 13... Short conveyor.

Claims (1)

[Claims] 1. A long conveyor is provided below the conveyance end of the supply conveyor that conveys rows of seedlings in paper tubes, and a short conveyor is provided below the lower surface of the conveyance end of the supply conveyor, facing the long conveyor. In a seedling transplanter that separates tubed seedlings, transfers them in a pinch, and supplies them to the planting section, a large number of protrusions made of a rubber-like substance are arranged in rows perpendicular to the conveyance direction on the surfaces of both conveyors. A seedling feeding device for a transplanter, characterized in that the pitch is smaller than the diameter of a paper tube.