JPH0130009Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The invention is a sowing device that can reliably sow a desired number of seeds into each pot of a paper pot 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, so-called paper pot seedlings have appeared, which are seedlings sown one seed at a time in paper pots made of paper material. This soil-attached seedling has thicker and stronger stems than conventional seedlings, so it has been confirmed that it is resistant to cold damage.

(The problem that the invention attempts to solve) However, one drop at a time in a small pot,
It was difficult to create paper pot seedlings because there was no equipment available for sowing.

Furthermore, in the past, for example, vegetable seeds attached to a moving machine were sown in a vast field using a sowing device, but although this sowing and work itself was easy, the subsequent thinning work was difficult. It was extremely difficult.

This invention solves this problem, and also:
The spiral groove is shaped so that seeds fit well into it.

(Means for Solving the Problem) Therefore, the present invention provides a pair of left and right horizontal or inclined axis spiral rolls 1, 2 having feeding spiral grooves 3, 4 formed on their outer circumferential surfaces. Seed transfer grooves 14 are formed on the upper surface between the spiral rolls 1 and 2, which are arranged in parallel so as to move in a matched state, and a gap between the spiral rolls 1 and 2 is formed below the spiral rolls 1 and 2. In a seeding device 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 seeding device,
The seeding device has a configuration in which the spiral grooves 3 and 4 have a semicircular cross-sectional shape.

(Example) To explain with an example diagram, 1 is a left-hand spiral roll, 2 is a right-side spiral roll, and the spiral rolls 1 and 2 are provided with counterclockwise rotation (or (clockwise rotation), spiral grooves 3 and 4 are formed that advance in the direction of arrow A.

The spiral grooves 3 and 4 may be a single-thread spiral or a multi-thread spiral, and a three-thread spiral was preferred according to the experimental results. Although the spiral grooves 3, 4 are in the same direction in FIG. 1, they can also be formed in opposite spiral directions. the spiral groove 3;
The cross-sectional shape of No. 4 is formed into a semicircular arc shape.

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 in parallel with a slight narrow gap, and a square-shaped seed transfer groove 14 is formed on the upper surface between them. The spiral groove 3 and the spiral groove 4 are combined from the left and right sides to form a single cross-shaped fitting groove 7, but the size of the fitting groove 7 is large enough to accommodate the seeds 8 sown in the seed transfer groove 14. Form smaller than.

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 15 is made high. 16 is the ground. A rotating brush 17 is provided above the seed moving groove 14 between the starting end 13 and the terminal end 15 to level the seeds moving in the seed moving groove 14 from the starting end 13 toward the terminal end 15. The rotating brush 1
The brush 18 of No. 7 is at least short with spiral rolls 1 and 2.
The seed moving groove 14 is formed to have a radius longer than that of the seed moving groove 14, and is rotated so as to sweep out excess seeds (seeds not fitted into the fitting groove 7) moving in the seed moving groove 14 toward the starting end 13 side.

A suction device 19 is provided below the spiral rolls 1 and 2.
will be established. 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 moving groove 14 downward so that the seeds stand upright and are attracted to the fitting groove 7. It is something to do. The suction case 20 is attached to the lower position of the fitting groove 7. Either side plate 21 of the suction case 20
The suction port 22 is opened, a connecting portion 23 is formed outside the suction port 22, and a hose of a suction machine (not shown) is connected thereto. The upper end portions of the front plate 24 and the rear plate 25 of the suction case 20 are formed in the same semicircular shape as the outer peripheral surfaces of the spiral rolls 1 and 2.
Avoid suction from any part other than the seed transfer groove 14 of No. 2.

(effect) Next, we will discuss the effect.

shafts 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 below the seed moving groove 14, a curved fitting groove 7 in which two semicircular arc-shaped spiral grooves 3 and 4 are combined is formed. and,
The fitting groove 7 of the seed transfer groove 14 moves in the direction of arrow A with the spiral groove 3 and the spiral groove 4 coming together.

As described above, since the cross-sectional shape of the spiral grooves 3 and 4 is formed into a semicircular arc shape, the seed 8 can easily fit tightly into the fitting groove 7. 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 seed transfer groove Since the seeds 14 are sucked downward, the seeds 8 fit neatly and upright in the fitting groove 7,
Moreover, the seeds move in the A direction in the seed moving groove 14 without coming off while being attracted.

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 because the brush 18 of the rotating brush 17 rotates to sweep them 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, the spiral rolls 1 and 2 by the motor
If the rotational speed of the paper is adjusted to a designed speed, it becomes possible, for example, to drop one grain at a time into the center of a paper pot passing just below.

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 sowing device that can reliably sow a desired number of seeds into each pot of a paper pot seedling box;
Also, for example, the present invention relates to a sowing device attached to a mobile machine that reliably sows vegetable seeds in the desired number of seeds at a time, and there is no need to perform thinning after sowing. Feed spiral groove 3 on the outer circumferential surface,
A pair of left and right horizontal or inclined-axis spiral rolls 1 and 2 forming a groove 4 are arranged side by side so that they move with their spiral grooves 3 and 4 aligned, and the upper surface between the spiral rolls 1 and 2 is forming a seed movement groove 14 in the
A seeding device is provided below the spiral rolls 1 and 2 with a suction device 19 that sucks the seeds through the gap between the spiral rolls 1 and 2 to adsorb the seeds in the moving groove 14 into the fitting groove 7. In,
Since this is a seeding device in which the cross-sectional shape of the spiral grooves 3 and 4 is formed into a semicircular arc shape, a.
Since the spiral grooves 3 and 4 have a semicircular cross-sectional shape, the seeds 8 easily fit into the lattice-shaped fitting groove 7.

(b) Since the suction device 19 below the spiral roll 1 and the spiral roll 2 sucks the seeds moving in the seed moving groove 14 downward, the seeds 8 fit into the square-shaped fitting groove 7 and are securely connected to the fitting groove. The grains can be moved in the direction A while being fitted in the hole 7, and the grains can be dropped one by one from the terminal end 15.

C. Therefore, spiral roll 1 by motor,
If the rotational speed in step 2 is set to a designed speed, it becomes possible, for example, to drop one grain at a time into the center of a paper pot passing just below.

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

This has this effect.

[Brief explanation of drawings]

Fig. 1 is a perspective view of the main part, Fig. 2 is a plan view of the main part, Fig. 3 is a vertical cross-sectional side view of the main part, and Fig. 4 is a 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, 2
1...Side plate, 22...Suction port, 23...Connection part,
24...front plate, 25...rear plate.

Claims (1)

[Scope of utility model registration request] 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 circumferential surfaces are arranged side by side so as to rotate with the spiral grooves 3 and 4 aligned with each other. Seed moving grooves 14 are formed on the upper surface between the rolls 1 and 2, and the spiral rolls 1 and 2
In the seeding device, a suction device 19 is provided below the spiral groove 3 for sucking the seeds in the moving groove 14 into the fitting groove 7 by sucking the seeds through the gap between the spiral rolls 1 and 2. , 4 has a semicircular cross-sectional shape.