JP2001169613A - Group-seeding type seeding apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the entrance of seeds to a deep hole 7 in a seeding device capable of positioning the upper part of a roller 3 having many deep holes 7 into which the seeds can fall on the outer periphery at the position facing toward the interior of a seed hopper 5 to fill each of the deep holes 7 with the seeds, and dropping the seeds from the deep holes when each of the deep holes comes to the lower part of the roller according to the rotation of the roller. SOLUTION: The angle θ from the horizontal face 12 passing the rotational center of the roller 3 to the position at which the deep hole 7 faces to the interior of the hopper 5 at first is regulated so as to be 35 deg..

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seeding apparatus for spot sowing seeds of a crop such as vegetables on a field or a tray for raising seedlings.

[0002]

2. Description of the Related Art In general, this type of point-seeding type spraying apparatus is
On the outer peripheral surface of the roller rotating with the axis horizontal, a large number of vase holes into which seeds are fitted are bored, and the upper part of the roller is looked into a seed hopper disposed above the roller, and the seeds are removed. In the popper, each pot hole in the roller is filled with an appropriate number of seeds sequentially, and then the seeds in each pot hole are filled with the pot when the pot hole comes to the lower surface of the roller with the rotation of the roller. It is configured to drop from the hole and spot sow on a field scene or a seedling raising tray or the like.

[0003] In this spot-seeding type spraying apparatus, the seeds in the seed popper fall into the pot hole when the pot hole on the outer peripheral surface of the roller enters the seed hopper with the rotation of the roller. However, in the conventional apparatus, the position where the pot hole on the outer peripheral surface first looks into the seed hopper with the rotation of the roller is located at a position where the height from the horizontal plane passing through the center of rotation of the roller is low. By setting, the angle from the horizontal plane passing through the center of rotation of the roller to the position where the pot hole first looks into the seed hopper is reduced.

[0004]

However, since each pot hole in the outer peripheral surface of the roller gradually changes from a horizontal sideways posture to an upward posture with the rotation of the roller, it is different from the conventional device. In the configuration in which the angle from the horizontal plane passing through the center of rotation of the roller to the position where the vase hole first looks into the seed hopper is small, the vase hole remains in a substantially horizontal orientation, in other words, enough. Before entering the seed hopper, they will not enter an upward position.

[0005] Therefore, according to the conventional configuration, a seed cross-linking phenomenon or the like occurs at the entrance to the pothole, making it difficult for the seed to enter the pothole, and seed shortage or chipping frequently occurs in seed seeding. There was a problem.

An object of the present invention is to solve this problem.

[0007]

In order to achieve this technical object, the present invention provides a rotary roller having a plurality of pot holes formed on an outer peripheral surface thereof, and an upper portion of the roller being provided above the rotary roller. And a seed hopper arranged so as to be viewed from above, an angle from a horizontal plane passing through the center of rotation of the roller to a position where the pot hole first looks into the seed hopper is set to 35 degrees or more. ].

[0008]

As described above, by setting the angle from the horizontal plane passing through the center of rotation of the roller to the position where the pothole first looks into the seed hopper at 35 degrees or more, the pothole can be turned from the side. At the point when the posture changed to the upward facing,
Since the seeds enter the seed hopper and fall into the seed hopper, the occurrence of seed cross-linking at the entrance to the pot hole is reduced, and the seeds can easily enter the pot hole.

Therefore, according to the present invention, the seed sowing of
This has the effect of reliably reducing the occurrence of shortage or chipping of seeds.

In particular, when the axis of each pot hole is viewed from the axial direction of the roller, the axis of rotation in the direction of rotation of the roller with respect to the normal to the pot hole from the center of rotation of the roller. By inclining by an appropriate angle in the forward direction, the posture of the pot hole when first looking into the seed hopper becomes more upward, so that the above effect can be further promoted.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to FIGS.

In this figure, reference numeral 1 denotes a seedling raising tray in which a large number of pot portions 1a are provided at an appropriate pitch P1 in the vertical direction and at an appropriate pitch P2 in the horizontal direction. Each of the pots 1a is transported in the direction of the arrow by a transporting means such as the endless chain 2 in a horizontal state in which floor soil is put in the pots 1a.

Reference numeral 3 denotes a roller which is driven to rotate at an appropriate speed in a direction indicated by an arrow.
Is supported by a frame 4 with its rotation axis 3a horizontal and perpendicular to the transfer direction of the tray 1. Above the rollers 3, a seed hopper 5 containing seeds is placed.
Is attached to the frame 4 so that the upper part of the roller 3 can be seen in the seed hopper 5.

A plurality of annular grooves 6 surrounding the roller 3 are formed on the outer peripheral surface of the roller 3 along the axial direction.
Are formed at intervals of the horizontal pitch P2 of the floor portion 1a, and a plurality of pot holes 7 formed in a substantially frusto-conical shape with a shallower depth are formed at the positions of the respective annular grooves 6. The vertical pitch P of the floor 1a of the tray 1 along the circumferential direction.
It is engraved at intervals of one.

In a portion of the outer peripheral surface of the roller 3 on the rear side in the rotation direction from the seed hopper 5, the pot hole 7 in the outer peripheral surface is closed over a section from the seed hopper 5 to the lower surface of the roller 3. The arcuate guide plate 8 is arranged as described above. In addition, this guide plate 8
The upper end of the roller 3 is rotatably connected to the frame 4 by a pin 9 so that the lower end can be separated from the outer peripheral surface of the roller 3. Surface.

A plurality of spring wires 10 such as a piano wire are provided on the lower surface of the roller 3 on the side opposite to the guide plate 8, and the tip of the spring wire 10 is an annular groove 6 in the roller 3. It is attached to the frame 4 so as to be inserted therein.

Furthermore, the bottom plate 5a of the seed hopper 5
An adjusting plate 11 whose tip is brought into contact with or close to the outer peripheral surface of the roller 3 is attached to the roller 3 so as to be adjustable in distance, and a pot on the outer peripheral surface of the roller 3 as the roller 3 rotates. When the hole 7 enters the seed hopper 5 beyond the adjusting plate 11, the seeds of the seed hopper 5 fall into the pot hole 7.

Then, from the horizontal plane 12 passing through the center of rotation of the roller 3, the center of rotation of the roller 3 and the adjusting plate 11
To the line 13 connecting the tip of the roller 3, ie, the roller 3
The angle θ from the horizontal plane 12 passing through the center of rotation to the position where the pot hole 7 first looks into the seed hopper 5 is configured to be 35 degrees or more.

In this configuration, with the rotation of the roller 3, the pot hole 7 is adjusted by the adjusting plate 11 in the seed hopper 5.
At the point when it enters the seed hopper 5
After the seeds are dropped and filled, the seeds pass through a brush 14 provided at the outlet from the seed popper 5, and are then held by an arc-shaped guide plate 8 in such a state that the seeds are held so as not to come out of the pot holes 7. When the seeds reach the lower surface of the tray 3 and pass through the guide plate 8, the seeds are sown on the tray 1 at the lower part thereof, while the seeds remaining in the pot hole 7 are provided by a spring wire provided rearward in the rotation direction. At 10, it is scraped out of the pot hole 7.

The seeds that come out of the brush 14 while being attached to the outer peripheral surface of the roller 3 are removed by a scraper 15 so as to enter a receiving box 16.

By the way, the seed in the seed popper 5 is removed from the pot hole 7 on the outer peripheral surface of the roller 3 when the pot hole 7 in the seed hopper 5 passes through the adjusting plate 11 with the rotation of the roller 3 and enters the seed hopper 5. The adjustment plate 11
However, as shown by a two-dot chain line in FIG. 3, in a form bent downward, a horizontal plane 12 passing through the center of rotation of the roller 3 and a center of rotation of the roller 3 and the adjustment plate 1 shown by the two-dot chain line
The angle θ 'to the line 13' connecting the tip of 1 ', that is,
The angle θ ′ from the horizontal plane 12 passing through the center of rotation of the roller 3 to the position where the pot hole 7 first looks into the seed hopper 5 is 20 °.
When the pot hole 7 is small, for example, around a degree, the pot hole 7 remains in a substantially horizontal posture, in other words, enters the seed hopper 5 before the posture becomes sufficiently upward. The seed cross-linking phenomenon easily occurs at the entrance.

On the other hand, as described above, the line 1 connecting the center of rotation of the roller 3 to the tip of the adjusting plate 11 indicated by the solid line from the horizontal plane 12 passing through the center of rotation of the roller 3
3, the angle θ from the horizontal plane 12 passing through the center of rotation of the roller 3 to the position where the pot hole 7 first looks into the seed hopper 5 is set to 35 degrees or more. Since the seeds fall into the seed hopper 5 when the posture is changed from the horizontal direction to the considerably upward position, the occurrence of seed bridging at the entrance to the pot hole 7 is reduced. It is easy for seeds to enter 7. Preferably, the angle θ is about 45 degrees or more.

When the center line 7a of each pot hole 7 is viewed from the axial direction of the roller 3, the center line 7a of the pot hole 7 is located in front of the roller 3 in the rotation direction with respect to a normal 17 from the rotation center of the roller 3 toward the pot hole 7. The configuration is such that the direction is appropriately inclined by an angle α.

With this configuration, the posture of each vase hole 7 when first looking into the seed hopper 5 over the adjustment plate 11 is more upward than that described above. This makes it easier to enter the seeds.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional front view showing an embodiment of the present invention.

FIG. 2 is an enlarged sectional view taken along line II-II of FIG.

FIG. 3 is a diagram showing a main part of FIG. 1;

FIG. 4 is a diagram showing another main part of FIG. 1;

FIG. 5 is a sectional view taken along line VV of FIG. 4;

[Explanation of symbols]

 Reference Signs List 1 tray 3 roller 5 seed hopper 6 annular groove 7 pothole 8 guide plate 10 spring wire 11 adjusting plate 12 horizontal surface 14 brush 33

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Kensuke Omae 1-32 Chayacho, Kita-ku, Osaka Yanmar Agricultural Machinery Co., Ltd. (72) Inventor Yoshio Maeda 200 Asakura, Yoka-cho, Yabu-gun, Hyogo Prefecture F-term (reference) 2B054 AA06 AA07 BA01 BB04 CA06 DD07 DD22

Claims (2)

[Claims] 1. A point sowing type seeding apparatus comprising: a rotary roller having a plurality of potholes formed on an outer peripheral surface thereof; and a seed hopper disposed above the rotary roller so that an upper portion of the roller looks inside. An angle from a horizontal plane passing through the center of rotation of the roller to a position where the pot hole first looks into the seed hopper is set to 35 degrees or more. 2. The roller according to claim 1, wherein an axis of each of said pot holes is viewed from an axial direction of the roller and is located forward of a rotation direction of the roller with respect to a normal from the rotation center of the roller toward the pot hole. A point sowing type seeding apparatus characterized by being inclined at an appropriate angle.