JPS6010336Y2 - Seeding machine - Google Patents

Description

[Detailed description of the invention] This invention relates to a seeding machine that can adjust the number of seeds to be sown.

The number of seeds per plant varies depending on the crop, ranging from one seed to five seeds, but with conventional seeding machines, the number of seeds sown is fixed, so it is necessary to use a seeding machine for each spot-sown crop. I had to prepare.

Some seeding machines can change the number of seeds to be sown by changing the seed plate, but changing the seed plate requires considerable effort.

Therefore, there is a need for a seeding machine that can easily adjust the number of seeds to be sown.

Furthermore, the accuracy of the seeding interval, that is, the distance between plants, of conventional seeding machines was not necessarily satisfactory.

The reason for this is that the actual landing position of the seeds fluctuates because the actual falling position of the seeds is high.

The purpose of this invention is to provide a seeding machine that can easily adjust the number of seeds to be sown and can obtain a highly accurate distance between plants. A device is installed to periodically hold and dispense the liquid.
This is a seeding machine that adjusts the number of seeds to be sown by changing the holding and feeding cycle.

The seeding machine of this invention will be explained based on an embodiment shown in the drawings.

As shown in FIG. 1, the -grain seed removal device 1 includes a seed box 2 and a seed plate 3 rotating inside the seed box 2, and the seed box 2 has a hopper portion 4 into which seeds are introduced and a partition forming a seed pool 5. It has a wall 6.

A seed groove cutting device 8 equipped with a groove cutting blade 9 and both side plates 10 is provided below the seed removal device 1.

A seed holding and feeding device 15 including a cam type rotor 11 and a guide 12 is installed inside both side plates 10 immediately below the dropping lower of the seed box 2.
will be established.

The rotor 11 and the guide 12 are rotatably supported by both side plates 10.

The other end of the spring 13, whose one end is locked to the side plate 10, is connected to the guide 12.
The guide 12 is always elastically engaged with the cam type rotor 11.

The rotor 11 and the guide 12 have their openings formed directly below the dropping lower of the seed box 2, and their side surfaces are close to the inner surface of the side plate 10.

As shown by the chain line, a transmission device 16 for rotating the rotor 11 and the seed plate 3 is provided, and an exchange gear 17, 18 for adjusting the rotation ratio between the two is attached to the transmission device 16.

Next, sowing by the sowing machine of this invention will be explained.

First, seeds are introduced from the hopper 4 to fill the seed reservoir 5 with seeds, and the inside of the seed plate 3 is made to have a negative pressure.

When the seed plate 3 is rotated, each seed hole 14 on the seed plate 3 attracts and takes out the seeds in the seed pool 5 one by one and carries them above the falling lower.

Above the drop lower, the seed hole 14 is closed from the inside by a shut roller, loses its suction force, and releases the seeds that have been attracted.

The released seeds fall from the falling lower onto the lower guide 12.

In this way, the seeds fall one by one from the seed extracting device 1 into the holding and feeding device 15.

The rotor 11 rotates in conjunction with the seed plate 3, but the speed ratio between the two is adjustable.

The number of seeds that fall onto the guide 12 while one cam crest of the rotor 11 passes through the guide 12 becomes the number of seeds to be sown.

As shown in FIG. 1, the number of seed holes 14 in the seed plate 3 is 24.
If the number of cam ridges on the rotor 11 is four, the rotational speed of the rotor 11 will be six times that of the seed plate 3 for single-seed seeding, three times as much for two-seed seeding, and twice that for three-seed seeding. Four-seed spot sowing is 1.5 times more,
For 5-grain spot sowing, adjust gears 17 and 18 so that the seeding rate is 1.2 times.

After the seeds are held on the guide 12 located close to the ground surface, they fall into the seed groove formed by the groove cutting blade 9, so the drop is very small and the seeds are hardly dispersed due to the reaction of falling. .

Naturally, the sowing accuracy will be improved compared to the conventional method.

In the embodiment of FIGS. 2 and 3, instead of a cam-type rotor,
A star-shaped rotor 20 or a belt with protrusions 30 is provided on the side plate 10 below the falling lower with respective guides 21 and 31.

Their operation and effect are substantially the same as those of the embodiment of FIG.

As mentioned above, the sowing machine of this invention uses a single seed extraction device for single seed spot sowing to sow one or many seeds, and uses a precision single seed extraction device such as a vacuum type. By doing so, extremely precise multi-point seeding can be performed.

By changing the speed ratio of the synchronously rotating seed plate and the transporting body such as the rotor by changing gears, the number of dot-sown seeds can be easily adjusted, so this sowing machine can be adapted to all kinds of dot-sown crops. It is.

Furthermore, the sowing machine of this invention can perform highly accurate sowing because the seed drop position is close to the ground.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing the main parts of a seeding machine according to one embodiment of this invention, and FIGS. 2 and 3 are sectional views of the main parts of other embodiments. 1: Seed removal device, 7: Seed drop opening, 8: Seed groove cutting device, 10: Same side plate, 11: Rotor (transfer body), 12 Ni guide, 13: Spring, 15: Seed holding and feeding device, 16
: Drive transmission device.

Claims (2)

[Scope of utility model registration request] (1) A seed removal device equipped with a rotating seed plate that takes out seeds one by one from a seed pool and sends them out from a drop opening;
a seed groove cutting device provided below the seed extraction device; and a seed holding and feeding device including a transfer body and a guide provided inside the seed groove cutting device directly below the drop opening;
It comprises a transmission device that interlocks the seed plate and the transfer body so that the speed ratio of the two can be adjusted, so that the seeds sent out by the seed take-out device are temporarily held between the guide and the transfer body and then fed out. Seeding machine is a feature. (2) Utility model registration In the seeding machine according to claim (1), the transporting body is composed of a cam-type rotor rotatably supported on a side plate of the seed furrowing device, and a guide is oscillated on the side plate. The seeding machine is characterized in that the shaft is freely fixed, and a spring is interposed between the side plate and the guide to engage the guide with the rotor.