JPH11187708A - Belt type seed sowing machine - Google Patents

Abstract

(57) [Summary] [PROBLEMS] If wet seeds or seeds with awns are inserted into a seeding hole drilled on the surface of a sowing belt of a belt-type point sowing machine, the seeds may not drop at the release position, Seeding unevenness had occurred. SOLUTION: A seeding belt 7 that rotates in the vertical direction is disposed below an input port 16a at a lower part of a hopper 16, and a large number of seeding holes 7a are formed in an outer peripheral surface of the seeding belt.
In a belt-type point sowing machine in which a predetermined amount of seeds are conveyed downward from a hopper by a sowing belt and sowed, a side wall of the sowing hole is formed on an inclined surface 7b that spreads toward an outer peripheral side,
Further, a plurality of extruded bodies 5a were formed on the outer peripheral surface of the roller shaft 5c that is wound and supported at the seed discharging position of the sowing belt in accordance with the position of the sowing hole.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sowing belt of a belt-type spot sowing machine for evenly sowing seeds in a nursery box.

[0002]

2. Description of the Related Art Conventionally, in order to grow rice seedlings, a seedling box supply device is provided at a starting end on a conveyor for transferring a seedling box, and a floor soil supply device, an irrigation device, a point sowing device, and a cover soil are sequentially provided. 2. Description of the Related Art A technique has been known in which a device and a stacking device are arranged so as to automatically sow seedling boxes one after another.

[0003] The feeding section of the above-mentioned seed sowing machine is of a feeding roller type or a belt type. The belt type seed sowing machine winds a belt between an upper roller, a driven roller, a guide roller and the like, rotates and drives the belt, and inserts and transports seeds at regular intervals on an outer peripheral surface of the belt. A large number of seed holes are opened in a grid pattern, and the seeds stored in the hopper enter various child holes, are conveyed downward, and fall on the seedling box at the lower end of the belt. Was.

[0004]

However, in the prior art, the seed hole on the outer peripheral surface of the belt is formed at right angles to the surface of the belt, and the seed hole is opened downward at the lower roller portion. However, the paddy was not caught in the seed hole and did not fall, so that seeding unevenness (missing stock) occurred on the seedling raising box. In particular, this problem was remarkable when the paddy was wet or when the paddy had a awn (branch).

[0005]

In order to solve such a problem, the present invention disposes a sowing belt rotating vertically in a lower portion of an inlet of a lower portion of a hopper, and provides a large number of sowings on an outer peripheral surface of the sowing belt. By drilling holes, in a belt-type point sowing machine for seeding by transferring a predetermined amount of seeds downward by a sowing belt from a hopper, the side wall of the sowing hole is formed on an inclined surface that spreads toward the outer peripheral side. is there. Further, a plurality of extruded bodies are formed on the outer peripheral surface of a roller shaft that is wound and supported at a seed discharging position of the sowing belt in accordance with the position of the sowing hole.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The problems to be solved by the present invention and the means for solving them are as described above. Next, the configuration of the embodiment shown in the accompanying drawings will be described. FIG. 1 is an overall view of a sowing apparatus having a belt-type point sowing machine of the present invention, FIG. 2 is a partial perspective view of a belt-type point sowing machine, FIG. 3 is a perspective view of a discharge roller, and FIG. FIG. 5 is a rear cross-sectional view of the wound discharge roller, FIG. 5 is a rear cross-sectional view showing a seeding belt wound around another type of discharge roller, and FIG. 6 is a side cross-sectional view of another type of discharge roller.

The belt type seed sowing machine 2 of the present invention is fixed on a seedling box transfer conveyor 11, and on the seedling box transfer conveyor 11, soil is placed in a seedling box in front of the belt type point sowing machine 2. A bed soil supply device for forming a seed sowing bed and a watering device are arranged, and a soil covering device for covering the seedling raising box after sowing is arranged behind the point sowing machine 2.

Next, the structure of the belt type seed sowing machine 2 will be described. As shown in FIG. 1, side plates 12 are erected above the left and right sides of the seedling box transfer conveyor 11 in the front and rear part of the middle, and the mounting plates 13 and 14 are laid horizontally in front of the side plates 12. The hopper 16 is mounted on the mounting plates 13 and 14.

As shown in FIGS. 1 and 2, an upper roller 3, a guide roller 4, and a discharge roller 5 are arranged in a triangular shape in a side view in a direction perpendicular to the conveying direction of the box transfer conveyor 11, The discharge roller 5 is located at the lowest position. The upper roller 3 and the guide roller 4
And the seeding belt 7 is wound between the discharge rollers 5. A plurality of seed holes 7a are provided on the outer circumferential surface of the sowing belt 7 at predetermined pitches in the circumferential direction and the width direction of the belt 7, respectively.
7a are provided, and the seeds are conveyed by rotating the seeding belt 7. The discharge roller 5
Can be arranged below the position between the upper roller 3 and the guide roller 4 to shorten the front-rear length of the belt-type seed sowing machine 2.

Further, a sprocket (not shown) is fixed to the drive shaft 15a of the drive motor 15, and the rollers 3, 4, 5,
Power is transmitted to each of the drive shafts via a sprocket, a chain, or the like, thereby rotating the seeding belt 7.

In addition, the charging port 1 is provided below the hopper 16.
6a are opened, and seeds fall onto the sowing belt 7 from the input port 16a and enter the seed holes 7a. A scraping brush 19 is arranged at a front upper position of the sowing belt 7, and a tip of the scraping brush 19 is attached to the sowing belt 7.
Is in contact with the outer peripheral surface. Therefore, when the seeding belt 7 is rotated, the seeds enter the seed holes 7a, and are conveyed obliquely upward, and the seeds that cannot enter the seed holes 7a, 7a are removed by the scraping brush. It was scraped at 19,
The seeds on the sowing belt 7 other than the seed holes 7a are stopped so as not to be transported upward.

A rotating shaft 20 is supported above the seeding belt 7 in parallel with the upper roller 3.
A brush body 21 is fixedly mounted on the reference numeral 0. The rotating shaft 20
Are driven in conjunction with the shaft of the roller 3 (or rollers 4 and 5) via a drive belt (not shown) or the like. Therefore, after being scraped off by the scraping brush 19, the spike sticking particles and the like protruding from the seed holes 7a are removed and stored in the receiving box 22 at the rear.

Further, on the rear conveying surface of the seeding belt 7,
It is covered by the guide sheet 24 and has the seed holes 7a.
... The seeds put in are prevented from falling or jumping out. The lower part of the guide sheet 24
The discharge roller 5 extends to the position of the discharge roller 5,
Are exposed so that the seed holes 7a, 7a,. The seeding belt 7 is inverted at the position where the discharge roller 5 is wound, and the seed holes 7a are opened at the same time as the seed holes 7a are opened, and the seeds fall onto the seedling raising box 25.

The seed hole 7a of the sowing belt 7 of the present invention will be described. As shown in FIG. 2, the seed hole 7a is a circular hole 7a in plan view, and is formed in a trapezoidal shape in cross section as shown in FIG. 4, and the side wall of the seed hole 7a has an outer peripheral side (in FIG. A tapered inclined surface 7b that extends toward the lower side is formed. With this configuration, the seeds can easily enter the seed holes 7a, and when the seeding belt 7 is turned over and the seeds fall from the seed holes 7a, the seeds are not caught at the corners, and the inclined surfaces are not inclined. 7b spreads further and becomes easy to fall.

Further, the discharge roller 5 is shown in FIGS.
Are provided in the axial direction of the roller shaft 5c, and a plurality of extruded bodies 5a are provided.
.. indicates the axial spacing between the seed holes 7a of the sowing belt 7
.7a, and the extruded body 5a
The width of is smaller than the width of the bottom surface of the seed hole 7a.
Note that the outer peripheral shape of the extruded body 5a may be flat or curved. When the extruded bodies 5a are brought into contact with the back surface of the seeding belt 7 where the seed holes 7a are located, and the seeding belt 7 is rotated, the seed holes 7a
are pressed so that the inclined surfaces 7b are expanded not only in the rotation direction but also in the width direction, so that the seed hole 7a
・ The seeds contained in 7a... Fall easily.

The extruded body 5a is an eccentric roller in the first embodiment, and as shown in FIG.
Are fixed eccentrically with respect to the axis of the roller shaft 5c. The eccentric directions are different from each other and are alternately shifted by 180 °. Therefore, the bulging of the seeding belt 7 in the width direction is alternately repeated by the eccentric rollers 5a, 5a,..., And the seeding belt 7 vibrates, and the seeds 7 from the seed holes 7a, 7a,. Promotes the fall. Therefore, the seedling beds of the seedling raising box 25 can be sowed evenly without sowing unevenness, and can be grown uniformly.

Next, a second embodiment of the discharge roller 5 'will be described. As shown in FIGS. 5 and 6, extrusion protrusions 5 b, 5 b... The protrusions 5b
The axial interval is set to the pitch of the seed holes 7a in the width direction of the seeding belt 7. further,
The distance between the protrusions 5b, 5b,... Around the roller shaft 5c is also set to the pitch in the transport direction of the seed holes 7a, 7a,.

Therefore, the seeding belt 7 is connected to the projections 5b and 5b.
..., the back side of the bottom surface of the seed holes 7a is pushed by the projections 5b, 5b, so that the bottom surface is raised and the inclined surface 7b is expanded, so that the seed holes 7a
a... are extruded, fall smoothly without being caught along the inclined surface 7 b, and are not left attached to the seed hole 7 a even if the periphery of the seed is wet, so that the seeding accuracy is improved. Be improved. Further, the protrusion 5b
5b... Reliably contact the inner peripheral surface of the seeding belt 7,
The seeding belt 7 is surely rotated synchronously without slipping.

[0019]

As described above, the present invention has the following effects. That is, as described in claim 1, a seeding belt that rotates in the vertical direction is disposed below the input port below the hopper, a large number of seeding holes are formed in the outer peripheral surface of the seeding belt, and the seeding belt is moved from the hopper by the seeding belt. In the belt-type point sowing machine that conveys and seeds a fixed amount of seeds downward, since the side wall of the seeding hole is formed on an inclined surface that spreads toward the outer peripheral side, the corner where the side wall of the seed hole intersects the outer peripheral surface is formed. The seeds can be easily dropped along the inclined surface without being caught by the seeds, and the seeds are left in the seed hole and there is no seeding unevenness that can not be sowed on the seedling box, evenly in the seedling box And sowing accuracy can be improved.

According to a second aspect of the present invention, a plurality of extruded bodies are formed on an outer peripheral surface of a roller shaft which is wound and supported at a seed discharging position of the sowing belt in accordance with a position of the sowing hole. At the position where the seeds are released, the extruded body comes into contact with and pushes from the back side of the bottom surface of the sowing belt, so that the inclined surface is widened and the bottom surface rises, so that the seeds are pushed out from the seed holes and the seeds are easily dropped. Therefore, even when the surface of the seeds is wet, the seeds can be reliably dropped from the seed holes without being adhered, sowing can be uniformly sowed without sowing unevenness, and sowing accuracy of the belt type point sowing machine can be improved. Can be.

[Brief description of the drawings]

FIG. 1 is an overall view of a sowing apparatus having a belt type seed sowing machine of the present invention.

FIG. 2 is a partial perspective view of a belt-type seed sowing machine.

FIG. 3 is a perspective view of a discharge roller.

FIG. 4 is a rear cross-sectional view of a discharge roller around which the seeding belt of the present invention is wound.

FIG. 5 is a rear sectional view showing a seeding belt wound around a discharge roller of the second embodiment.

FIG. 6 is a side sectional view of a discharge roller according to a second embodiment.

[Explanation of symbols]

 2 Belt type seed sowing machine 5 Discharge roller 5a Eccentric roller (extruded body) 5b Extrusion projection (extruded body) 5c Roller shaft 7 Seeding belt 7a Seed hole 7b Inclined surface

Claims (2)

[Claims] 1. A seeding belt that rotates in the vertical direction is arranged below an input port below a hopper, and a large number of seeding holes are formed in an outer peripheral surface of the seeding belt. A belt-type point sowing machine, wherein a side wall of the seeding hole is formed on an inclined surface extending toward an outer peripheral side. 2. The extruded body according to claim 1, wherein a plurality of extruded bodies are formed on an outer peripheral surface of a roller shaft that is wound and supported at a seed discharging position of the seeding belt, in accordance with a position of the seeding hole. Belt type seed sowing machine.