JPH0515211A - Sowing device - Google Patents

Abstract

PURPOSE:To directly sow bare seeds such as soybeans for upland fields in an arbitrary sowing amount by dropping the seeds from a seed tank through receiving holes formed in a matrix state and through the receiving holes of a cell plate, while reciprocating the cell plate. CONSTITUTION:Seeds in a seed tank 1 are dropped from receiving holes 5 formed in a matrix state into dropping holes 12a through the receiving holes 8 of a cell plate 9 and the receiving holes 6a, 6b of a movable plate 6. The amount of sowing is controlled with the reciprocating cell plate 9. The number of the receiving holes of the seed tank can be changed with dividing members, and the seeds can be sowed in arbitrary numbers into seedling boxes having different cell numbers.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seeding device for sowing coated field seeds or field-acting naked seeds such as uncoated soybean in a nursery or in a field.

[0002]

2. Description of the Related Art If the number of seed grains can be sown accurately and in large numbers in the center of the hole of each seedling raising box, it is possible to improve the efficiency of seeding work. As an attempt to improve the efficiency of such a sowing operation, for example, Japanese Patent Application Laid-Open No. 2-261306 discloses sowing a desired number of grains automatically and continuously with high accuracy, mainly without damaging the coat of the coat seed. A seeding device adapted to do so is disclosed.

Further, Japanese Patent Laid-Open No. 1-252209 discloses a seeding device in which an arc cam is applied to reciprocate a cell hole plate. Since these seeding devices can automatically and accurately sow the coated seeds into the seedling raising box, it has become possible to handle from simple seedling raising facilities to large-scale seedling raising facilities for mass seedling raising.

[0004]

However, in the seeding device disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 2-261306, a seedling box having a different number of cells due to a difference in standards is used although it is fully automated. Since it is impossible to cope with the above, and further, it is necessary to reduce the cost and simplify the structure, the improvement is desired.

Further, the seeding device disclosed in Japanese Patent Laid-Open No. 1-252209 is not suitable for seeding field-acting naked seeds such as soybeans having uneven grains, and therefore, improvement thereof is also desired. ing.

The present invention has been made in consideration of such a situation, and it is possible to sow an arbitrary number of seeds accurately and surely in a seedling box having a different number of cells with a simple structure, and further, a grain. It is an object of the present invention to provide a seeding device capable of directly sowing non-uniform seeds for field crops such as soybeans directly into a field.

[0007]

The seeding device of the present invention has a receiving hole formed in a matrix, and the number of these receiving holes is variable by being partitioned by a partition member, A cell plate having plate receiving holes formed corresponding to the receiving holes formed in a matrix in order to adjust the seed sowing amount in the seed tank, and a reciprocating motion for reciprocating the cell plate. It is characterized by including a moving mechanism and a drop hose attached to each of the plate receiving holes formed in a matrix.

Further, the seeding device of the present invention comprises pulse generating means for generating two kinds of electric pulses of short cycle and long cycle,
A cell plate for adjusting the seeding amount and reciprocating the cell plate based on two kinds of electric pulses from the pulse generating means, and performing a seed receiving operation when based on the short cycle, Cell plate reciprocating means for discharging the received seeds and seed detecting means for detecting drop of seeds to be sown when the long period is based are provided.

[0009]

In the seeding device of the present invention, the seeds carried into the seed tank are designed to drop from the receiving holes formed in a matrix, and the seeding amount which is the falling amount is determined by the reciprocating cell plate. It is regulated. Since a drop hose is attached to each of the plate receiving holes, reliable seeding can be performed by positioning the end of the drop hose against the center hole of each cell of the nursery box to be seeded. Be seen. Furthermore, since the number of receiving holes in the seed tank can be varied by partitioning with the partition member, it is possible to sow seedling boxes even with different numbers of cells.

Further, in the seeding device of the present invention, the seeding amount is adjusted by reciprocating the cell plate based on the two kinds of electric pulses from the pulse generating means.
Direct seeding in the field is possible. Further, since the seed detection means detects the drop of the seed to be sown, the seeding can be surely checked.

[0011]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows an embodiment of the seeding device of the present invention. As shown in the figure, the seeding device is provided with a seed tank 1 for storing the coated seed 1A. In the seed tank 1, partition plates 2, 2 with a chevron cross section are formed.
4 are provided. 1 for each partition plate 2
Nine slits 3, 3, ... Are provided. The small plates 4 are detachably attached to the slits 3 in each row of the partition plates 2.

Here, the number of cells in the seed tank 1 is 5 ×
20 = 100. The size of each cell is, for example, length × width × height = 5 × 5 × 3 (mm). As a result, the standard M (3 mm diameter cabbage, broccoli and other spherical seeds) and L (major axis 4.3 mm, minor axis 2)
mm lettuce seeds).

In the lower part of the seed tank 1, the above 5 × 20 = 10
A receiving hole 5 corresponding to 0 cell is provided. Further, a moving plate 6 having receiving holes 6a and 6b and being pushed in a predetermined stroke in the directions of arrows a and b by a pushing mechanism (not shown) is provided in the lower part of the seed tank 1. A cell plate insertion hole 7 is provided between the lower part of the seed tank 1 and the moving plate 6.
Is provided.

A cell plate 9 having a receiving hole 8 corresponding to each receiving hole 5 is movably attached to the cell plate insertion hole 7. Further, a spring (not shown) is attached to the cell plate 9, whereby the cell plate 9 is
Is always biased in the direction of arrow a. The movement of the cell plate 9 in the direction of the arrow a is regulated by a regulation member (not shown), and in this regulated state, the receiving hole 5 and the receiving hole 8 are aligned with each other.

At one end of the cell plate 9, an abutting member 10 abutting against a rotary cam 17 described later is attached. Then, when the cell plate 9 is extruded in the direction of arrow a or b from the state shown in FIG. 3, the coated seed 1 dropped into the receiving hole 5.
After A is received by the receiving hole 8, it is pushed out to the receiving hole 6b side.

An intermediate receiving plate 11 is arranged below the seed tank 1. The intermediate receiving plate 11 is provided with falling holes 12, 12, ... Corresponding to the receiving holes 5 of the seed tank 1. Each hole 12
A drop hose 12a communicates between the receiving holes 6a and 6b of the moving plate 6. The coated seed 1A dropped by its own weight from the receiving hole 6a or 6b passes through the inside of the drop hose 12a and is dropped downward from the drop hole 12.

The intermediate receiving plate 11 and the seed tank 1 are supported by a support frame 13. A bracket 14 is attached to the support frame 13. Bracket 1
A manual handle 15A is rotatably attached to the shaft 4. The manual handle 15A is provided with a handle portion 15 and a handle shaft 16.

In the middle portion of the manual handle shaft 16, one long protrusion 17a and three short protrusions 17b, 17c,
A rotary cam 17 having 17d is attached. Then, by rotating the handle shaft 16 while holding the handle portion 15, the protrusions 17a to 17d of the rotating cam 17 press the contact member 10 in the direction of arrow b. As a result, the cell plate 9 is pushed out in the direction of arrow b against the biasing force of the spring. The amount of extrusion by the long protrusion 17a of the rotary cam 17 is set so that the receiving hole 8 and the receiving hole 6b coincide.
The amount of extrusion by the short protrusions 17b to 17d is set between the position of the receiving hole 8 and the position immediately before the receiving hole 6b.

Next, the sowing operation of the coated seed 1A by the sowing apparatus having such a structure will be described. First, in order to match the number of cells of the seedling raising box (not shown) to be seeded with the coated seeds 1A, the small plates 4 are attached to the slits 3 for each row of the partition plates 2. At this time, when the number of cells in the nursery box is 75, for example, the small plate 4 is attached to the slit 3 in the fifth row of each partition plate 2. As a result, the number of cells on the side of the seed tank 1 is set to 75, so that the number of cells in the nursery box can be taken into consideration.

After the corresponding setting of the number of cells by the small plate 4 is completed, the coated seed 1A is carried into the area of the seed tank 1 partitioned by the small plate 4. After carrying in the coat seeds 1A, a seedling raising box is installed below the intermediate receiving plate 11. At this time, the cells of the nursery box and the holes 12 of the intermediate receiving plate 11 are aligned with each other.

After the positioning of the nursery box is completed, the handle portion 1
Hold handle shaft 5 and rotate handle shaft 16. At this time, due to the pressing force of the contact member 10 in the direction of the arrow b by the short projections 17b to 17d of the rotating cam 17 and the biasing force of the spring,
The cell plate 9 reciprocates little by little. As a result, small vibrations are transmitted to the coat seed 1A,
Individual seeds easily fall into the receiving hole 5.

The coated seeds 1A carried into the seed tank 1 are dropped from the receiving holes 5 in the area partitioned by the small plates 4 and held in the receiving holes 8 of the cell plate 9. Then, as the handle shaft 16 rotates, the long protrusion 17a of the rotary cam 17 presses the contact member 10 in the arrow b direction, and the cell plate 9 is pushed in the arrow b direction.
The receiving hole 8 coincides with the receiving hole 6b. As a result, the coated seed 1A held in each receiving hole 8 of the cell plate 9 is
It falls from the receiving hole 6b by its own weight. The coated seed 1A dropped from the receiving hole 6b moves to the intermediate receiving plate 11 side through the dropping hose 12a, and further drops from the dropping hole 12 to the seedling raising box side below. As a result, in each cell of the nursery box,
One coat seed 1A is sown each.

In this way, when the rotary cam 17 makes one rotation, the moving plate 6 is moved by an extruding mechanism (not shown).
Are extruded in the direction of arrow b. Moving plate 6 at this time
The amount of movement is set to the position where the receiving hole 6a coincides with the position of the receiving hole 6b. Then, similar to the above, the manual handle 15
When A is rotated once, the coated seed 1 held in the receiving hole 8
A passes through the receiving hole 6a and the drop hose 12a, and the drop hole 1
It drops from 2 to the seedling box side below. As a result, the second coated seed 1A is sown in each cell of the nursery box.

Therefore, one coat seed 1A is sown in each cell of the nursery box every time the manual handle 16A is rotated once while holding the handle portion 15. Therefore, an appropriate number of coat seeds 1A should be sown. You can

As described above, in this embodiment, each partition plate 2 is provided with a slit 3, and a small plate 4 can be attached to each slit 3 of each partition plate 2 so that the number of cells on the seed tank 1 side can be increased. Since it is adapted to the number of cells on the box side, it is possible to support seedling raising boxes with different numbers of cells.

Further, since the coated seeds 1A are sown one by one in each cell of the nursery box every time the manual handle 16A is rotated once, the number of the coated seeds 1A to be sown in the nursery box can be confirmed. This facilitates the seeding of an appropriate number of coated seeds 1A for each cell of the nursery box.

FIG. 4 shows another embodiment in which the structure of the intermediate receiving plate 11 of FIG. 1 is changed. As shown in the figure, the intermediate receiving plate 11 is formed with guide grooves 12A for attaching the ends of the drop hoses 12a and allowing the ends to slide in one direction.

By moving the end of the drop hose 12a along the guide groove 12A, the center of the end of the drop hose 12a can be easily aligned with the center hole of the cell of the nursery box (not shown). It is like this. Thus, in this embodiment, the end of the drop hose 12a is moved along the guide groove 12A so that the center hole of the cell of the nursery box is aligned with the center of the end of the drop hose 12a. Seeding into seedling raising boxes with different numbers and center holes of cells becomes easy and reliable.

FIGS. 5 and 6 show another embodiment in which the manual type seeding device of FIG. 1 is an automatic type, and a reciprocating device 20 for reciprocating the cell plate 9 is provided. ing. The reciprocating device 20 is provided with a connecting shaft 21. An end edge of the cell plate 9 is attached to an end of the connecting shaft 21 via a connecting fitting 22. The cell plate 9 is biased in the direction of arrow b by a spring (not shown).

When a solenoid 58, which will be described later, inside the reciprocating device 20 is driven, the connecting shaft 21 is retracted,
As a result, the cell plate 9 moves in the direction of arrow a. On the other hand, when the pulling force to the connecting shaft 21 by the solenoid 58 is released, the cell plate 9 returns to the fixed position by the urging force of the spring. The amount of pull-in by the solenoid 58 is, for example, the same as the amount of push-out of each protrusion of the rotary cam 17. However, in the above embodiment, the cell plate 9 is extruded in the direction of the arrow b, whereas in this embodiment, the cell plate 9 is drawn in the direction of the arrow a.

As described above, in this embodiment, since the cell plate 9 is automatically reciprocated by the reciprocating device 20, unlike the manual operation shown in FIG. 1, the work load in seeding is reduced. Can be made.
In this embodiment, the case where the cell plate 9 is simply moved back and forth has been described, but the present invention is not limited to this example, and the operation timing of the reciprocating device 20 is set in advance to coat a plurality of nursery boxes. The seed 1A can be sown efficiently and uniformly.

FIG. 7 and FIG. 8 show a sowing apparatus for sowing bare field seeds such as soybeans having irregular grains. As shown in the figure, the seeding device is provided with a frame 30. An electromagnetic cylinder 31 is provided at one end of the frame 30. A spring 33 is wound around a moving shaft 32 of the electromagnetic cylinder 31. As a result, the moving shaft 32 is urged in a direction away from the electromagnetic cylinder 31.

A fixing member 34 for fixing the seeding device body to another member is rotatably attached to one end of the frame 30. Then, the rotation angle of the fixing member 34 is set by tightening the bolt 35.

A holding portion 36 is provided at the end of the fixing member 34. The holding portion 36 is provided with a fixed contact member 37 and a movable contact member 39 which is movable back and forth with respect to the fixed contact member 37 by rotating the knob 38 clockwise or counterclockwise. There is. Then, another rod-shaped member is interposed between the fixed abutting member 37 and the moving abutting member 39, and the knob 38 is rotated clockwise, so that the moving abutting member 39 fixes the other member. Contact member 37
Press on. Thereby, the seeding device body is fixed to the other member.

On the other hand, a seed drop hole 40 is formed at the other end of the frame 30. Below the seed drop hole 40, a drop chute 41 is arranged. The drop chute 41 is provided with a seed detection sensor 41a. The seed to be sown is detected by the seed detection sensor 41a. At the other end of the frame 30, a cell plate holding member 45 having a guide groove 42, a recess 43, and a drop hole 44 corresponding to the seed drop hole 40 is provided.

A cell plate 48 having a receiving hole 46 and guide protrusions 47, 47 is movably inserted into the guide groove 42. The end portion of the cell plate 48 is attached to the end portion of the moving shaft 32 of the electromagnetic cylinder 31 via a connecting fitting 49. A seed tank 51 for accommodating the seeds 50 is provided above the cell plate holding member 45.
Inside the seed tank 51, the seeds 5 on the side of the cell plate 48 are
An inclined plate 52 for restricting the amount of drop of 0 is provided. An opening / closing lid 53 is detachably provided on the upper portion of the seed tank 51.

The diameter of the receiving hole 46 of the cell plate 48, the drop hole 44 of the cell plate holding member 45, the seed drop hole 40 of the frame 30 and the drop chute 41 is larger than the particle size of bare seeds for field crops such as soybeans. It is set slightly larger. FIG. 9 shows a control circuit for controlling the drive of the electromagnetic cylinder 31, which is provided on the side of a control box (not shown) provided separately from the main body of the seeding device.

As shown in the figure, the control circuit includes a long cycle pulse setting section 55 for setting a long cycle pulse based on a setting instruction of the long cycle setting button 54 and a short cycle setting button 5.
A short period pulse setting unit 57 for setting a short period pulse based on the setting instruction of No. 6 is provided. Further, the control circuit includes a long cycle pulse setting unit 55 and a short cycle pulse setting unit 5.
A control unit 60 is provided for controlling the operation of the solenoid drive circuit 59 based on the pulse set by 7. Then, the solenoid drive circuit 59 controls the operation of the solenoid 58 under the control of the control unit 60.

Further, the control circuit includes a seed detection sensor 41.
A display driver 62 for lighting the lamp 61 based on the detection result from a is provided. The operation of the display driver 62 is also controlled by the control unit 60.

The seeding device having such a structure operates as follows. First, the seeding device main body is fixed by attaching the sandwiching portion 36 to another member. After fixing the sowing apparatus body, the opening / closing lid 53 is removed and the seeds 50 are filled in the seed tank 51. After the seed 50 is filled, the long cycle setting button 54 and the short cycle setting button 56 on the control box side are operated to set the cycle of each pulse.

By operating a start button (not shown), the control unit 60 controls the solenoid drive circuit 59. Here, the control by the control unit 60 is performed based on the short cycle pulse set by the short cycle setting button 56, and thereafter is performed based on the long cycle pulse set by the long cycle setting button 54.

As a result, the moving shaft 32 performs small forward and backward movements based on the short period pulse, and the cell plate 48 repeats the reciprocating movement a plurality of times. That is, when the short cycle pulse is at the high level, the moving shaft 32 is pulled in the direction of the arrow a, and when the short cycle pulse is at the low level, the pulling force is released and is pushed by the spring 33 in the direction of the arrow b.

However, in the operation based on such a short period pulse, the receiving hole 46 of the cell plate 48 is inside the recess 43 (see FIG. 8).
(See) to move back and forth. Vibration is transmitted to the seed tank 51 side by such reciprocating movement of the receiving hole 46, so that the individual seeds 50 easily fall into the receiving hole 46.
At this time, since the seed 50 is easily guided to the receiving hole 46 by the guide protrusions 47, 47 provided along the moving direction of the cell plate 48, the seed 5 by the receiving hole 46.
The receipt of 0 becomes more reliable. Further, at this time, the receiving hole 46 of the cell plate 48 reciprocates in the recess 43, so that the seed 50 in the seed tank 51 does not leak outside.

Cell plate 4 by a predetermined short period pulse
When the reciprocating movement of 8 is completed, the control unit 60 shifts from the control by the short cycle pulse to the control by the long cycle pulse.
That is, when the long cycle pulse is at the high level, the moving axis 32
Is drawn in the direction of arrow a, and when the short period pulse is at a low level, it is pushed out by the spring 33 in the direction of arrow b. At this time, the stroke of movement by the moving shaft 32 is set until the receiving hole 46 of the cell plate 48 comes out of the recess 43 and coincides with the drop hole 44 of the cell plate holding member 45.

Then, when the receiving hole 46 of the cell plate 48 coincides with the drop hole 44 of the cell plate holding member 45, the seed 50 held in the receiving hole 46 of the cell plate 48 due to its own weight, the seed drop hole 40 of the frame 30. And fall chute 4
Seed through 1 in the field. In this way, the cell plate 48 repeats the short reciprocating motion and the long reciprocating motion based on the short period pulse and the long period pulse, so that the seed 50 is sown in the field.

When the seed 50 passes through the inside of the drop chute 41, the seed 50 is detected by the seed detection sensor 41a, and the lamp 61 is turned on to notify. Therefore, the sowing operator can successively monitor the falling of the seed 50. As described above, in this embodiment, the receiving hole 46 of the cell plate 48 and the cell plate holding member 45 are provided.
Since the diameters of the pit 44, the seed pit 40 of the frame 30, and the drop chute 41 are set to be slightly larger than the particle size of the bare seed for field crops such as soybean, the naked seeds for field crops such as soybean having different particle sizes are set. Can be sown easily and reliably in the field.

The cell plate 48 shown in FIG.
As shown in 0, a protrusion 47a may be provided instead of the guide protrusion 47. In this case, since the seed 50 can be more reliably vibrated when the cell plate 48 makes a short reciprocating motion, the seed 50 can be more easily dropped into the receiving hole 46.

[0048]

According to the seeding device of the present invention, the seeds carried into the seed tank are designed to drop from the receiving holes formed in a matrix, and the seeding amount which is the drop amount is a reciprocating motion. It is regulated by the cell plate. Also, since a drop hose is attached to each of the plate receiving holes, by positioning the end of the drop hose against the center hole of each cell of the nursery box to be seeded,
Reliable seeding is performed. Furthermore, since the number of receiving holes in the seed tank can be varied by partitioning with the partition member, it is possible to sow seedling boxes even with different numbers of cells. Further, according to the seeding device of the present invention, the seeding amount is adjusted by reciprocally moving the cell plate based on the two types of electric pulses from the pulse generating means, so that direct seeding in a field becomes possible. . Further, since the seed detection means detects the drop of the seed to be sown, the seeding can be surely checked. As a result, it is possible to sow any number of seeds accurately and reliably in a seedling box with a different number of cells with a simple configuration, and further to sow naked seeds for field crops such as soybeans with uneven grain directly to the field. You can

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a seeding device of the present invention.

2 is a plan view showing the seed tank of FIG. 1. FIG.

3 is a side view of the seeding device of FIG. 1. FIG.

FIG. 4 is a plan view showing another embodiment when the configuration of the intermediate receiving plate in FIG. 1 is changed.

FIG. 5 is a perspective view showing another embodiment in which the manual seeding device of FIG. 1 is automatic.

FIG. 6 is a side view showing the reciprocating device of FIG.

FIG. 7 is a perspective view showing another embodiment in which the seeding device of the present invention is used for a field.

8 is a cross-sectional view showing the main parts of FIG.

9 is a block diagram showing a control circuit for controlling driving of the solenoid shown in FIG. 7. FIG.

10 is a cross-sectional view showing another embodiment in which the configuration of the cell plate of FIG. 7 is changed.

[Explanation of symbols]

1A coat seed 1 seed tank 2 partition plates 3 slits 4 small plates 5,6a, 6b, 8 receiving holes 7 Cell plate insertion hole 9 cell plate 10 Contact member 11 Intermediate support plate 12a drop hose 12 Pitfalls 15A manual handle 17 rotating cam 31 Electromagnetic cylinder 32 moving axes 36 Clipping part 41 Fall Shoot 41a Seed detection sensor 48 cell plate

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Sawa Imazono             No. 4, Akahira, Shimokuragawa, Morioka, Iwate Prefecture             Building RC1-25 (72) Inventor Haruo Takahashi             577 Kamiakubara, Shinsen Village, Kodama-gun, Saitama Prefecture (72) Inventor Tatsuya Harada             Saitama prefecture Honjo city Oita Kitabori 570 158 (72) Inventor Sennosuke Tomita             918 Nikaido, Kamakura City, Kanagawa Prefecture

Claims (2)

[Claims] 1. A seed tank which has receiving holes formed in a matrix and is variable by dividing the number of these receiving holes by a partition member, and an amount of seeds seeded in the seed tank is adjusted. In order to achieve this, a cell plate having a plate receiving hole formed corresponding to the receiving hole formed in the matrix, a reciprocating mechanism for reciprocating the cell plate, and the cell plate formed in the matrix A seeding device comprising: a drop hose attached to each of the plate receiving holes. 2. A pulse generating means for generating two kinds of electric pulses of a short cycle and a long cycle, a cell plate for adjusting a seeding amount, and two kinds of electric pulses from the pulse generating means. Cell plate reciprocating means for causing the cell plate to reciprocate and performing a seed receiving operation when based on the short cycle and a discharging operation of the received seed when based on the long cycle, and sowing And a seed detecting means for detecting the fall of the desired seed.