JPH0417603B2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a spot sowing device that can reliably sow a desired number of seeds into each pot of a pot sheet seedling box, for example. . For example, the present invention relates to a sowing device attached to a moving machine that reliably sows vegetable seeds in a desired number of spots and eliminates the need for thinning after sowing.

(Prior Art) Conventionally, seedlings with soil for rice transplanters have progressed from using seedlings with soil sown in bulk to seedlings with soil sown in rows. Recently, soil-grown seedlings called pot sheet seedlings have appeared, which are grown by sowing seeds one by one in a pot sheet made of paper material and having a large number of pots.

(Problems to be Solved by the Invention) Compared to conventional seedlings, this soil-grown seedling grows better and has thicker and stronger stems, so it has been confirmed that it is resistant to cold damage. Therefore, it is quite popular, but you can reliably put one grain at a time in a small pot.
Until now, there was no equipment available for sowing, so it was difficult to create seedlings in pot sheets.

Furthermore, in the past, for example, a vegetable seeding device attached to a mobile machine was used to sow seeds in vast fields, but although this seeding work itself was easy, the subsequent thinning work was extremely difficult. It was hot.

(Means for Solving the Problems) The present invention solves this problem by moving a pair of left and right horizontal or inclined-axis spiral rolls 1 and 2 having feeding spiral grooves 3 and 4 formed on their outer peripheral surfaces to each other. A seed transfer groove 14 is formed on the upper surface between the spiral rolls 1 and 2 by arranging the spiral grooves 3 and 4 so as to rotate in a matched state. A seeding device is provided with a suction device 19 that sucks the seeds in the moving groove 14 into the fitting groove 7 by sucking the seeds through between the rolls 1 and 2, and a seeding device is provided in the upper part of the moving groove 14. , a seeding device provided with a rotating brush 17, and a seeding device provided with a rotating brush 17 above the moving groove 14 that rotates in a direction opposite to the direction of seed movement.

(Example) To explain an example of the present invention with the drawings, 1 is a left spiral roll, 2 is a right spiral roll,
Spiral grooves 3 and 4 are formed on the outer circumferential surfaces of the spiral rolls 1 and 2, which move in the direction of arrow A when the spiral rolls 1 and 2 rotate counterclockwise (or clockwise).

Although the spiral grooves 3 and 4 may be a single-thread spiral or a multi-thread spiral, experimental results showed that a three-thread spiral was preferable. Although the spiral grooves 3, 4 are in the same direction in FIG. 1, they can also be formed in opposite spiral directions.

5 is a helical crest on the helical roll 1 side, and 6 is a helical ridge on the helical roll 2 side.

The spiral rolls 1 and 2 are both formed to have the same diameter from beginning to end, and rotate with the ridges 5 and 6 and the spiral grooves 3 and 4 aligned.

Peak portion 5 of spiral roll 1 and peak portion 6 of spiral roll 2
are arranged side by side with a slight narrowing, and a square-shaped seed transfer groove 14 is formed on the upper surface between them. spiral groove 3
The two spiral grooves 4 are joined from the left and right sides to form one fitting groove 7, but the size of the fitting groove 7 is as follows.
It is formed to be smaller than the seeds 8 supplied to the seed transfer groove 14 at most.

9 is the shaft of the left spiral roll 1, and 10 is the shaft of the right spiral roll 2. A sprocket 11 is attached to the shafts 9 and 10, and a chain 12 is wound around the sprocket 11 for rotation.

The spiral rolls 1 and 2 have a starting end 13 with a low height h
In addition, the terminal end portion 15 is formed with a high H shape. 16 is the ground.

Between the starting end 13 and the terminating end 15, the terminating end 15 is located above the seed moving groove 14.
A rotating brush 17 is provided to smooth out the seeds moving in the seed moving groove 14 toward the seed moving groove 14. The brush 18 of the rotating brush 17 is formed to be at least shorter than the radius of the spiral rolls 1 and 2, and removes excess seeds (seeds not fitted into the fitting groove 7) moving in the seed moving groove 14 from the starting end 1.
Rotate so that it sweeps out to the 3rd side.

A suction device 19 is provided below the spiral rolls 1 and 2. The suction device 19 allows suction air to blow through the fitting groove 7 from top to bottom, and sucks the seeds moving in the seed transfer groove 14 downward, so that the seeds stand upright and are attracted to the fitting groove 7. It is intended to do so. A suction case 20 is provided below the fitting groove 7, and a suction port 22 is opened in one of the side plates 21 of the suction case 20.
A connecting portion 23 is formed on the outside of the holder, and a hose of a suction machine (not shown) is connected thereto. The upper edge of each of the front plate 24 and the rear plate 25 of the suction case 20 is formed in the same semicircular shape as the outer peripheral surface of the spiral rolls 1 and 2 to prevent suction from other than the fitting groove 7 of the spiral rolls 1 and 2. Make it.

(effect) Next, we will discuss the effect.

The shaft 9 of the left spiral roll 1 and the right spiral roll 2,
When a sprocket 11 attached to a shaft 10 is rotated by a chain 12, the left helical roll 1 and the right helical roll 2 simultaneously rotate to the left (or to the right). Since the spiral grooves 3 and 4 and the peaks 5 and 6 are aligned on the left and right sides, the upper surface between the left spiral roll 1 and the right spiral roll 2 is
A seed moving groove 14 is formed, and a fitting groove 7 in which the spiral grooves 3 and 4 are combined is formed below the seed moving groove 14. Then, the seed transfer groove 14
The fitting grooves 7 advance in the direction of arrow A in a matched state.

A suction device 19 is provided below the spiral roll 1 and the spiral roll 2, and when air is sucked from the suction port 22 of the device 19, suction air blows from top to bottom through the fitting groove 7, and the seeds are moved. Since the seeds moving in the groove 14 are sucked downward, the seeds 8 fit neatly into the fitting groove 7 and move in the direction A in the seed moving groove 14 without coming off while being fitted.

Since the brush 18 of the rotary brush 17 rotates to sweep back the excess seeds to the starting end 13 side, the extra seeds that do not fit into the fitting groove 7 of the seed moving groove 14 are swept back to the starting end 13 side.

In this case, one seed 8 falls when the spiral rolls 1 and 2 rotate once in the single-thread spiral, two seeds fall when the spiral rolls 1 and 2 rotate once in the double-thread spiral, and two seeds fall when the spiral rolls 1 and 2 rotate once in the double-thread spiral. When the rolls 1 and 2 rotate once, many particles fall.

Therefore, if the rotational speed of the spiral rolls 1 and 2 by the motor is adjusted to a designed speed, it is possible, for example, to drop one grain at a time into the center of a pot sheet passing just below. Become.

In addition, in the case of a field, for example, there is a request to drop one vegetable seed accurately every 10 cm, but in this case, the forward speed of the machine and the rotation of spiral rolls 1 and 2 are required. This is easily possible by fully synchronizing the speeds.

(Effects) As already mentioned, the present invention includes, for example, a spot sowing device that can reliably sow a desired number of seeds into each pot of a pot sheet seedling box;
Also, for example, with a seeding device attached to a mobile machine,
Ensure that the desired number of vegetable seeds are sown,
This is a point-seeding device that does not require any thinning after sowing, and it uses a pair of left and right horizontal or inclined-axis spiral rolls 1 and 2, which have feed spiral grooves 3 and 4 formed on their outer circumferential surfaces. A seed transfer groove 14 is formed on the upper surface between the spiral rolls 1 and 2 by arranging the spiral grooves 3 and 4 so as to rotate in a matched state. Since the seeding device is equipped with a suction device 19 that sucks the seeds in the moving groove 14 into the fitting groove 7 by suctioning the seeds through the gap between the rolls 1 and 2, the seeds 8 are sucked from above. Seed transfer groove 1 at starting end 13
4, spiral roll 1 and spiral roll 2
The suction device 19 below the seed moving groove 14
Since the seeds moving downward are sucked downward, the seeds 8
can move in the A direction while reliably fitting into the fitting groove 7, and can reliably drop one grain at a time from the terminal end 15.

Therefore, the motorized spiral roll 1,
If the rotational speed of No. 2 is set to a designed speed, it becomes possible, for example, to drop one grain at a time into the center of a pot sheet passing just below.

In the case of a field, for example, if you want to drop one vegetable seed accurately every 10 cm, you need to adjust the forward speed of the machine and spiral rolls 1 and 2.
This is easily possible by completely synchronizing the rotational speeds of the

This effect is achieved.

Moreover, since the present invention is a seeding device in which a rotating brush 17 is provided above the moving groove 14, excess seeds that do not fit into the fitting groove 7 of the seed moving groove 14 are removed by the rotating brush 17. The seeds are removed by the 17 brushes 18, and only one seed is securely fitted into each fitting groove 7 and moved, allowing accurate sowing.

Further, the present invention is a seeding device in which a rotating brush 17 that rotates in the opposite direction to the seed moving direction is provided above the moving groove 14, so that the fitting groove 7 of the seed moving groove 14 is Since the extra seeds that do not fit are swept back to the starting end 13 side by the brush 18 of the rotating brush 17, all the seeds fit into the fitting grooves 7 one by one and can be sown accurately.

This effect can also be expected.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the main part, FIG. 2 is a vertical cross-sectional side view of the main part, and FIG. 3 is a front vertical cross-sectional side view of the main part. Explanation of symbols, 1... left spiral roll, 2...
Right side spiral roll, 3... Spiral fitting groove, 4... Spiral fitting groove, 5... Mountain part, 6... Mountain part, 7... Fitting groove, 8... Seed, 9... Shaft, 10... axis, 11...
...Sprocket, 12...Chain, 13...Starting end, 14...Seed transfer groove, 15...Terminal end, 16
...ground, 17...rotating brush, 18...brush, 19...suction device, 20...suction case,...
21... Side plate, 22... Suction port, 23... Connection portion, 24... Front plate, 25... Rear plate.

Claims (1)

[Claims] 1. A pair of left and right horizontal or inclined axis spiral rolls 1, 2 having feed spiral grooves 3, 4 formed on their outer peripheral surfaces are rotated with their spiral grooves 3, 4 aligned with each other. A seed moving groove 14 is formed on the upper surface between the spiral rolls 1 and 2 in parallel to the spiral rolls 1 and 2.
The seeding device is provided with a suction device 19 below the spiral rolls 1 and 2 to suck the seeds in the moving groove 14 into the fitting groove 7 by sucking the seeds through between the spiral rolls 1 and 2. 2. In what is stated in claim 1,
The seeding device is provided with a rotating brush 17 above the moving groove 14. 3 In what is stated in claim 1,
The seeding device is provided with a rotating brush 17 that rotates in the opposite direction to the seed moving direction above the moving groove 14.