JPH0576210A - Drilling unit of seedling transplanter - Google Patents

Abstract

PURPOSE:To prevent growth disorder caused by a piece of film, e.g. leaf burn by attaching a specified drilling unit capable of thrusting through a mulch film and making a hole by its descent. CONSTITUTION:A drilling unit of the seedling transplanter is lowered and thrust through a mulch film and the soil of the row is scraped together forward to make a hole by its forward movement. The mulch film is torn off forward and the lower end part of a pressing unit 19 is subsequently rotated around a horizontal shaft and moved forward to press pieces of film generated by the above-mentioned tear-off against the front wall of the hole. The pressing unit subsequently moves back, departs the pieces of film and moves upward. There is no fear of drawing up the piece of film from the hole and, therefor, covering the seedlings therewith.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used in a field-operated seedling planter for transplanting seedlings into a ridge covered with a mulch film.

[0002]

2. Description of the Related Art As shown in Japanese Unexamined Patent Publication No. Hei 2-222603, a hole making device for a seedling transplanter of this type pierces a mulching film with a digging nail and moves the nail forward as the traveling vehicle advances. Then, both sides of the mulch film 4 are torn, and then the claw is raised.

[0003]

Therefore, the mulch film is cut in a U-shape by the descent and advance of the digging nail, and when the digging nail rises, the film piece adheres to the digging nail and goes up, The film pieces lifted in this way could cover the transplanted seedlings and lead to a growth disorder called leaf bending.

[0004]

In order to solve the above-mentioned problems, the present invention is provided with a punching tool 9 which penetrates a mulch film 21 and pierces a ridge 2 when it descends so as to move vertically on a traveling vehicle body 3. The punching tool 9 is characterized by including a film pressing body 19 whose lower end rotates around the horizontal axis 20 to move in the traveling direction when the tool descends, and then returns to the rear side and ascends. It was used as a hole making device in a seedling transplanter.

[0005]

Since the present invention is configured as described above, when the seedling transplanter is operated, the hole making tool 9 descends and pierces the mulch film 21 and pierces the ridge 2, and the ridge 2 moves forward. The soil is scraped forward to make a hole 22, and the mulch film 21 is also torn at the front. After that, the lower end of the pressing body 19 rotates around the horizontal axis 20 and moves forward,
The film piece 21a formed by the above-mentioned tearing is pressed against the front wall of the hole, and then the pressing body 19 moves back and rises apart from the film piece 21a.

[0006]

[Effect] As described above, when making the holes 22 for transplanting seedlings,
The multi-film 21 has a film piece 21a in which the rear edge and the left and right edges are cut off and the front edge is connected. Here, in the conventional hole making tool, the nail has the film piece 21a.
As it was rising in contact with the
According to the present invention, the pressing body 19 strongly presses the film piece 21a against the front wall of the hole 22 and then returns backward and rises away from the film piece 21a. As a result, the film piece 21a was no longer pulled up from the hole 22, and leaf bending and other growth disorders due to the film piece 21a were eliminated.

[0007]

Embodiments of the present invention will be described below. Figure 1
As described above, a seedling planting table 4 and a seedling planting rod 5 are attached to a traveling vehicle body 3 in which a pair of left and right driving wheels 1 propel each other over a ridge 2 to form a seedling planting machine. That is, the drive wheel 1 is rotated counterclockwise by the power of the engine 6 at the tip, the traveling vehicle body 1 is advanced to the left, and the seedling table 4 on which the collective seedlings are placed reciprocates left and right by the power. The conveyor belt 7 forming the bottom sends the collective seedlings to the right side when the seedling placing table 4 reaches the lateral end, and the tip of the seedling planting rod 5 turns up and down in a long elliptical orbit 8 to cause the seedling placing table to move. The seedlings on No. 4 are taken out one by one and transplanted to the ridge 2.

A hole making tool 9 is provided in front of the lower part of the elliptical orbit 8. The hole making tool 9 is configured as follows. As shown in FIGS. 2 and 3, a pair of upper and lower links 1
Numerals 0 and 11 project rearward from the bracket 12, and their rear ends are connected by a connecting rod 13. The tip 10a of the upper link 10 projects forward from the rotary shaft 14 and is pulled down by a spring 15 so that the connecting rod 13 is raised. A roller 16 is provided in the middle of the upper link 10,
17a of the drive shaft 17 that rotates counterclockwise with the power of
The roller 16 is pushed down intermittently.

A vertically long mounting base 18 is fixed after the connecting rod 13, and a pressing body 19 is mounted on the lower end of the mounting body 18 so as to rotate around the horizontal shaft 20. This pressing body 19 is shown in FIG.
As shown in the following, the trapezoid is formed in the front-back direction, and as described below, the mulch film 21 covering the ridges 2 is cut (broken), and then holes 22 for transplanting seedlings are formed in the ridges 2. It is designed to be made. Pressing body 19 and mounting base 1
A push rod 24 pushed by a spring 23 is attached between
The lower end of the pressing body 19 is pushed counterclockwise to the position shown in FIG.

An arm 25 extends rearwardly from the bracket 12 and then a roller 26 below the lower link 11.
Is installed. Then, as shown in FIG.
The roller 16 is pushed down by a and each link 1
When the rear ends of 0 and 11 descend and the pressing body 19 reaches the lowermost end, the front surface of the portion 19a of the pressing body 19 above the horizontal axis 20 hits the roller 26 to move the lower end of the pressing body 19 horizontally. It is adapted to rotate clockwise around the shaft 20. Therefore, when the rear ends of the links 10 and 11 descend, that is, when the pressing body 19 finishes descending and turns upward (the cam 17a moves away from the roller 16), the lower end of the pressing body 19 is pressed by the spring of the push rod 24. It is pushed counterclockwise to return to the state of the solid line in FIG. 2 (chain line in FIG. 3) and rise.

When this is seen in FIG. 5, it operates as follows. That is, the pressing body 19 descends in a slanting posture in a rearward and downward direction when viewed from the side, the lower end thereof pierces the mulch film 21 and tears it laterally, and further descending continues to the mulch film on both the left and right sides thereof. 21 is cut in the longitudinal direction (front-back direction) and plunges into the ridge 2, and when it reaches the lowermost end, the lower end advances and becomes a posture close to a vertical line.
A hole 22 is formed in the hole, and the film piece 21a is pressed against the front wall of the hole 22 while cutting the mulch film 21 vertically. Then, when the pressing body 19 starts to rise, the lower end moves back to the right and separates from the film piece 21a,
Then rise.

After that, the seedling planting rod 5 transplants the seedlings into the holes 22, and the pair of right and left soil-covering rings 27 shown in FIG. In the above apparatus, the cutter for cutting the mulch film 21 and the pressing body 19 for pressing the cutter against the wall surface of the hole 22 are integrally formed, but as shown in FIGS. 6 and 7, they can be separately formed. .. That is, the multi-cutter 28 having a U-shaped cross section is fixed to the lower end of the mount 18, and the pressing rod 29 is provided in the same manner as the pressing body 19. Then, the multi-cutter 28 cuts the multi-film 21 and perforates the ridge 2, and the pressing rod 29 presses the film piece 21 a against the front wall of the hole 22. When the pressing rod 29 is made of a relatively thin rod, a part of the film piece 21a cut by the multi-cutter 28 and having a smooth cut is pushed deeply into the front wall of the hole 22 by the thin rod. The film piece 21a does not come out of the hole 22.

[Brief description of drawings]

FIG. 1 is a side view of a seedling planting machine according to the present invention.

FIG. 2 is an enlarged side view of the hole making tool in a raised position.

FIG. 3 is a side view of the lower end of the hole making tool.

FIG. 4 is a rear view thereof.

FIG. 5 is a side view showing the relationship between the hole making tool and the ridges.

FIG. 6 is a side view of a hole making tool showing another embodiment.

FIG. 7 is a cutaway plan view thereof.

[Explanation of symbols]

 2 ridges 3 traveling vehicle body 9 drilling tool 19 pressing body 20 horizontal axis 21 multi-film 22 hole

Claims (1)

[Claims] 1. A drilling tool 9 which penetrates the ridges 2 through the mulch film 21 when it descends is provided on the traveling vehicle body 3 so as to move up and down. A hole making device in a seedling transplanter, comprising a film pressing body 19 which rotates around an axis 20 and moves in a traveling direction and then returns to the rear side and rises.