JPH0126169Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a seed adsorption tool for a seeding machine for sowing seeds.

Multiple seed suction arms are attached radially to a cap-shaped rotating body, and seeds are sucked into the suction device, which is removably attached to the tip of the rotating suction arm, using negative pressure, and when it rotates approximately 270 degrees, the seeds are directed downward. Plants that sow seeds by dropping dried seeds are already known. However, with this conventionally known suction device, it is not possible to suck soybeans and corn, which are larger than small seeds such as vegetables, with the same suction tool as for small seeds. The reason for this is that in order to adsorb large seeds, it is necessary to increase both the air volume and negative pressure, but since the capacity of the negative pressure pump is fixed, it is not possible to increase the air volume and negative pressure. be.

The present invention makes it possible to adsorb large seeds by specializing the structure of the suction tool and by replacing only the suction tool.

An embodiment of this invention will be described based on the drawings.

4 is a seed storage case, 6 is a cap-shaped rotating body arranged at the center of the storage case 4, and 5 is a seed suction arm radially attached to the cap-shaped rotating body 6. 1 is an O-ring 9 inserted into a fitting hole 5a provided at the tip of the suction arm 5.
The main body of the seed adsorption device is detachably inserted and fitted through the cap-shaped main body 7, at least one (two in the figure) recesses 2 provided along the generatrix in the direction of propagation, and a recess 2 in the recess 2. It consists of a suction hole 3 provided and a tapered portion 7a provided at the tip of the fitting portion of the cap-shaped main body 7.

A suction tool is constructed by inserting and fitting the suction tool body 1 into the suction arm 5.

The suction tool main body 1 communicates with negative pressure via the suction arm 5 and the cap-shaped rotary body 6, and suctions the seeds 8 at the lower part A of the rotation path, and then roughly moves in the direction C.
It is equipped so as to cut off the adsorption action and release the seeds 8 at the downward position B rotated by 270 degrees.

Accordingly, the present invention forms a cap-like body 7 made of a thin metal plate, and at least a portion of the cap-like body 7 is formed so that the seeds are partially buried on the generatrix in the direction of propagation.
2 are formed, and suction holes 3 are provided at the bottoms of the depressions 2.

As mentioned above, the seed adsorption tool for a seed sowing machine according to the present invention has a cap-shaped main body made of a thin metal plate that is inserted into the fitting hole 5a provided at the tip of the seed suction arm 5 of the seeding machine through an O-ring 9. A tapered part 7a is provided at the tip of the fitting part 7, at least one depression 2 is formed on the generatrix in the direction of movement of the tip of the cap-shaped main body 7, and at the bottom of the depression 2, a part of the seed is buried. With the suction hole 3, the inner diameter can be made larger than the outer diameter of the suction tool body 1, and the recess 2 can be made larger without insufficient negative pressure.
Can absorb large seeds.

The bending moment applied to the suction arm is
Since the suction tool body 1 becomes smaller as it approaches the tip, even a thin plate can have sufficient strength.

The main body of the conventional suction tool was made from a steel round bar by lathe machining, so it was not possible to make a thin wall, and the air passage near the suction hole was small, resulting in a lack of negative pressure and dust. It also clogged easily.

However, in the present invention, since the suction tool main body 1 is made by deep drawing a thin metal plate, the suction tool main body 1 can be made extremely thin and a sufficient air passage can be secured. Further, since the tapered portion 7a is provided at the tip of the cap-shaped main body 7, it is easy to insert and fit into the fitting hole 5a.

In addition, since the large seeds are inserted into the depressions 2, the area around the suction holes 3 is sealed by the surface of the large seeds, and the large seeds can be reliably and easily absorbed toward the suction holes 3. .

In addition, when the suction device passes through the seeds at the bottom of the storage case 4, it scoops up the suctioned seeds in the hollow 2, so that the suctioned seeds are absorbed into the suction hole 3.
Seeds can be reliably sown without falling off.

Furthermore, since the air passage near the suction hole 3 is large, clogging of the suction hole 3 due to dust can be reduced.

Note that the suction tool according to the present invention can of course be used for small seeds of vegetables and the like by reducing the size of the depressions 2.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention.
The figure is a cross-sectional view of the seed storage case in the seeding machine, Figure 2 is a partially cutaway front view of the tip of the suction arm containing the seed suction tool, and Figure 3 is a front center vertical cross-sectional view of the suction tool body in Figure 2. be. DESCRIPTION OF SYMBOLS 1...Suction tool body, 2...Indentation, 3...Suction hole, 4...Accommodation case, 5...Suction arm, 5a
... Fitting hole, 6 ... Cap-shaped rotating body, 7 ... Cap-like main body, 7a ... Tapered part, 8 ... Seed, 9 ...
...O-ring.

Claims (1)

[Scope of utility model registration request] A cap-shaped main body 7 made of a thin metal plate is inserted into a fitting hole 5a provided at the tip of a seed suction arm 5 of a seed sowing machine through an O-ring 9, and a tapered part 7a is provided at the tip of the fitting part. This seed adsorption tool for a seeding machine is formed by forming at least one depression 2 in which the seeds are partially buried on the generatrix in the direction of propagation at the tip of a main body 7, and providing a suction hole 3 at the bottom of the depression 2.