JPS6242660Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a radial arm of a negative pressure seeding machine used when sowing large seeds.

Conventionally, negative pressure sowing machines are known for use when sowing paddy, but if you try to use this negative pressure sowing machine when sowing soybeans or onions with the same outer diameter of the arm, the outer diameter of the seeds will be different. Because it was too large, seeds would not stick to the arm, making it impossible to put it to practical use. Furthermore, even if the adsorption holes in the arms were made larger, the arms still had a small outer diameter and the seeds would slide off the arms, making it still impossible to use.

This idea uses a special shape for a thin arm with the same outer diameter as the arm used for paddy, which allows it to attract large seeds and sow them.

A first embodiment of the radial arm of the negative pressure seeding machine according to this invention will be described with reference to FIGS. 1 to 3 and 6.

As shown in Fig. 1, seeds 2 in a seed box 1 placed on the lower side are attracted to the front side of each tip of a rotating radial tubular arm 3 under negative pressure (position E), and then lifted upward (position F). → G position), and then, when the arm 3 is oriented substantially horizontally (H position), the negative pressure is released and the adsorbed seeds 2 are allowed to fall through the guide tube 4. In this invention, the tip of the tubular arm 3 made of a metal pipe, which is slightly thicker than the outer diameter of the seed 2, is expanded in the width direction to the extent that it can be fitted with soybean or onion seeds by press-width expansion molding using a press. A diameter recess 5 is provided, and a small through hole 6 communicating into the tubular arm 3 is provided at the bottom of the recess 5. With this configuration, large seeds can be reliably absorbed into the recess 5.

In this case, the shape of the recess is determined by the neutral line M-M in the traveling direction of the tubular arm 3, as shown in FIGS. 4 to 6.
If the concave portions 5, 5 are provided from the diagonally forward direction on both sides, and the connecting portion 7 between the two concave portions 5, 5 is formed so as to point forward on the neutral line M-M in the traveling direction, two grains can be collected at once. Can adsorb seeds.

In the present invention, the tubular arm 3 is made of a metal pipe, and the recess 5 is pressed by a press, so that the metal pipe collapses and becomes wide, as shown in Figs. 3 and 5, and the width is wider than the outer diameter of the metal pipe. It was possible to form a concave portion.

When large-sized seeds and small-sized paddy are sown by the same negative pressure sowing machine, the present invention is economically advantageous because tubular arms with the same inner diameter can be used.

As mentioned above, in this invention, the seeds 2 in the seed box 1 placed on the lower side are attracted to each end of the rotating radial tubular arm 3 under negative pressure, and then lifted upward, and then when the arm 3 is oriented approximately horizontally. In a negative pressure seeding machine configured to release negative pressure and drop the adsorbed seeds 2 through a guide tube 4, a tubular arm 3 made of a metal pipe that is slightly thicker than the outer diameter of the seeds 2 is used.
A concave portion 5 with an enlarged diameter in the width direction is formed on the forward end side of the arm by pressure widening molding using a press to fit a soybean or onion seed, and a small through hole 6 that communicates with the inside of the tubular arm 3 is provided at the bottom of the concave portion 5. It has the advantage of being able to sow soybeans and onions using a negative pressure sowing machine for sowing paddy. In particular, the harvest time for soybeans and corn is different from the harvest time for rice, so a negative pressure seeding machine can be used effectively.

[Brief explanation of the drawing]

The drawings are for explaining an embodiment of the radial arm of the negative pressure seeding machine according to this invention. Figure 1 is a partially cutaway side view of the main part of the negative pressure seeding machine, and Figure 2 is a first embodiment. 3 is a sectional view taken along the line A-A in FIG. 2, FIG. 4 is a front view of the main portion of the radial arm in the second embodiment, and FIG. 5 is a sectional view taken along line A-A in FIG. BB sectional view, Figure 6 is CC in Figure 3,
5 is a sectional view taken along line DD in FIG. 5. FIG. 1... Seed box, 2... Seed, 3... Arm, 4
... Guide cylinder, 5 ... recess, 6 ... small through hole.

Claims (1)

[Claims for Utility Model Registration] 1. Seeds in a seed box placed on the lower side are attracted to each tip of a rotating radial tubular arm under negative pressure, and then lifted upward, and then when the arms are oriented approximately horizontally, the negative pressure is applied. In a negative pressure seeding machine that is configured to release the seeds and drop the adsorbed seeds through a guide tube, the tip of the tubular arm made of metal pipe, which is slightly thicker than the outside diameter of the seeds, is pressed and expanded in the direction of travel. A radial arm of a negative pressure seeding machine, which is provided with a concave portion with a diameter wide enough to fit soybean or onion seeds, and a small through hole communicating with the inside of the tubular arm at the bottom of the concave portion. 2. A utility model registration request characterized in that recesses are provided diagonally forward on both sides of the neutral line in the direction of travel of the tubular arm, and the connecting portion of both recesses is pointed forward on the neutral line in the direction of travel. A radial arm of the negative pressure seeding machine according to scope 1.