JP2529887Y2 - Seed drop tube in vacuum seeder - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a seed drop tube in a vacuum sowing machine that adsorbs seeds and sows each pot.

(Conventional technology) Conventionally, a vacuum machine for vacuum-adsorbing, transporting, and sowing seeds is known.

For example, according to Japanese Utility Model Application No. 63-11038 filed by the present applicant, seeds are lifted from a hopper in a receiving tray, and the seeds are sucked from the receiving tray. The seeds are dropped from the seed dropping tube.

An improvement over this is proposed in Japanese Patent Application No. 1-73332.

That is, the seed cylinder storing the seeds is rotated,
The seed that has slid down in the seed cylinder is sucked by a suction nozzle arranged near the opening of the seed cylinder, and the sucked seed is moved to the seeding guide port together with the suction nozzle and sown from the seed drop tube. It has become so.

(Problems to be Solved by the Invention) When all the seed drop tubes of the above-described vacuum seeder are discharged toward the pot of the seedling tray set on the conveyor device, the seed drop tubes scatter and cannot be properly seeded. There is a disadvantage that.

Therefore, an object of the present invention is to provide a seed drop tube in a vacuum seeder that is appropriately seeded toward a pot.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a seed drop tube in a vacuum seeder as described below.

That is, in the present invention, in a vacuum sowing machine that adsorbs seeds and seeds them in pots, the outer periphery of the seeding port of the seed dropping tube is made flexible to slide on the seedling raising tray, and is larger in diameter than the seed dropping tube. In addition, a configuration is adopted in which a scattering prevention tube whose outer diameter at the lower end substantially matches the inner diameter at the upper end of the pot is provided.

(Operation) In the case of the present invention, the area between the pot opening on the upper surface of the tray and the seeding opening of the seed dropping tube is closed with a scattering prevention tube.
The seed discharged from the seed drop tube does not fly outward.

(Example) An example shown in the drawings will be described below.

The main body of the vacuum seeder of the present invention is based on the previously proposed Japanese Patent Application No. 1-73.
Since the configuration is the same as that of No. 332, the configuration will be described first with reference to FIGS.

Seed cylinders (1) are filled with seeds in advance, and seedling raising trays filled with nutrients and the like in pots (2) are set on a conveyor device (3).

Further, the cylinder (4) and the cylinder (5) are operated, and the suction nozzle (6) is set at a position where the suction nozzle (6) is inserted into the nozzle insertion hole (7) of the rotating body (15).

Then, a rotary cylinder (not shown) is operated to rotate the crank (19), and the seed cylinder (1) containing seeds is moved from the position shown in FIG. 6 to the seventh position via the rod (13) and the bracket (14). Rotate to the position shown in the figure and slide down to the opening (1a) shown in FIG. The seed that has slid off is sucked by the suction nozzle (6) near the opening of the seed cylinder (1).

When the adsorption of the seeds is completed, the cylinder (4) in the transfer mechanism main body (20) operates to raise the suction nozzle (6) via the arm (12) with the frame (11). When the suction nozzle (6) completely comes out of the nozzle insertion hole (7), the cylinder (5) operates to operate the transfer mechanism body (20), and the suction nozzle (6) is moved as shown in FIG. Operate up to above the seeding guide (8).

Next, the pressure of the suction nozzle (6) is changed from negative pressure to positive pressure, and the seed is dropped into the sowing guide port (8). The fallen seeds fall in the seed drop tube (9), sowing port (10)
To the pot (2).

As described above, when the seeding of the pots (2) of the row of seedling trays is completed, the pot (2) is advanced by one row by the conveyor device (3), and the cylinders (4) and (5) are moved. It returns to a state in which the suction nozzle (6) is operated and inserted into the nozzle insertion hole (7).

In the vacuum seeder operating as described above, when seeds are discharged from the seed drop tube (9) to the pot (2), as shown in FIG. There is a gap between the seeds, which causes the seeds to bounce and scatter, preventing proper sowing.

Therefore, according to the present invention, as shown in FIG. 2, a flexible anti-scattering tube (16) covering the periphery of a seeding port (10) is attached to a seed dropping tube (9), and a conveyor device is provided. When the seedling raising tray moves in (3), the scattering prevention tube (16) slides on the upper surface of the pot (2). The scattering prevention pipe (16) has a size whose outer diameter at the lower end substantially matches the outer diameter at the upper end of the pot (2).

Thus, when the gap between the seeding opening (10) and the upper surface of the pot (2) is covered with the scattering prevention pipe (16), the suction nozzle (6) operates intermittently so that the seeds fall. The falling seeds do not fly around.

Also, by providing a scattering prevention tube (16) having a diameter larger than that of the seed drop tube (9) as shown in FIG. 2, even if the seed drop tube (9) on the side opposite to the tray moving direction is bent, the seeding is performed. It does not block the mouth (10).

On the other hand, when there are as many seed drop tubes (9) in a row as the number of pots and they are supported by round bars (17) as shown in FIG. May not always be at the center of the pot. In this case, it is not possible to perform appropriate sowing for each pot.

Therefore, as shown in FIG. 5, an acrylic plate (18) having a U-shape in plan view is provided for each child drop tube (9) with respect to the round bar (17). When the acrylic plate is configured to hold (9), the acrylic plate forms a kind of elastic body, and the repulsive force positions the seed drop tube (9) at the center of the pot (2) so that the seed drop tube (9) is positioned. Since 9) does not move, the seed is sown at the center of the pot.

(Effects of the Invention) According to the present invention, the anti-scattering pipe is mounted on the outer periphery of the seed dropping pipe at intervals, but the anti-scattering pipe is flexible so that the outer diameter of the lower end is equal to the upper end of the pot. The size between the seed dropper and the upper surface of the pot is blocked, so that the seeds falling from the seed dropper will not scatter outside the pot. .

Since the scattering prevention tube is flexible and has a diameter larger than that of the seed falling tube, when the tray is moved, it does not become an obstacle and does not block the seeding opening.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a relative relationship between a seed drop tube and a seedling raising tray, FIG. 2 is a cross-sectional view of a main part of the device of the present invention, FIG. Fig. 5, Fig. 5 is a perspective view and a plan view showing a device for supporting the seed drop tube, Figs. 6, 7 are side views of a vacuum seeder of the present invention device in different states, and Fig. 8 is a sectional view of a seed tube. It is. (2) ... pot (9) ... seed drop tube (16) ... shatterproof tube

Claims (1)

(57) [Scope of request for utility model registration] In a vacuum sowing machine for adsorbing seeds and seeding them in pots, the seedling dropper is slidable on a seedling tray on the outer periphery of a seeding port of a seed dropping tube, and has a diameter larger than that of the seed dropping tube. A seed drop tube in a vacuum seeder provided with a scattering prevention tube whose outer diameter at the lower end substantially matches the inner diameter at the upper end of the pot.