JPH0441964B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention provides a seeding device that can reliably sow a desired number of seeds into each pot of a pot sheet seedling box, for example.

(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, seedlings with soil, called pot-sheet seedlings, have appeared, which are sown one seed at a time on a pot-sheet made of paper material. This soiled seedling is
Compared to conventional varieties, it has been confirmed to have better growth and thicker stems, making it more resistant to cold damage. Therefore, it is quite popular, but in small pots,
Until now, there was no equipment that could reliably sow one seed at a time, so it was difficult to create seedlings in pot sheets.

However, although this is not known in the art, the specification of Japanese Patent Application No. 1983-20106 filed by the same applicant states that spiral rolls having spiral grooves formed on their outer peripheral surfaces are arranged side by side.
A seed transfer groove is formed between the spiral rolls, seeds are sown in the seed transfer groove, and the seeds are accurately moved one by one by the action of the spiral groove, thereby solving the above problem. Proposed.

(Problem to be solved by the invention) Therefore, the number of pots in the pot sheet seedling box is
Due to the planting structure of the rice transplanter, 18 seeds are usually arranged horizontally in a row, but in this case, the seed transfer grooves formed between the spiral rolls allow the seeds to be transferred to the 18 pots of the pot sheet seedling box. In order to feed one seed at a time, the number of seed transfer grooves must be lined up 18, and 19 spiral rolls are required, so in the prior art, the spiral rolls are considerably thinner. , it was difficult to produce. Not only that, but because the spiral roll was thin, the seed transfer groove was also shallow, making it impossible to ensure a sufficient depth.

In order to ensure the sufficient depth of the seed transfer groove and to satisfy the conditions of ease of production, the structure was designed so that seeds could be sown in every other pot in a horizontal row, and the diameter of each spiral roll was adjusted to the diameter of the pot. It is best to place two thick rolls side by side.

(Means for Solving the Problems) Accordingly, the present invention provides a method for moving a horizontal or inclined-axis spiral roll 1 having a feed spiral groove 2 formed on its outer peripheral surface while keeping the spiral grooves 2 aligned with each other. Seed transfer grooves 4 are formed on the upper surface between each of the spiral rolls 1, 1, .
A suction device 17 is provided which sucks the seeds supplied into the moving groove 4 by suctioning the seeds through the moving groove 4. The setting is such that seeds can be sown every other row of pots 6 in a horizontal row of the pot sheet seedling box 5 passing below, and two sets of such devices are set so that the position of the moving groove 4 is shifted by one pot horizontally. This is a seeding device disposed in the moving direction of the seedling box 5.

(Example) To explain with an example diagram, 1 is a spiral roll, and the spiral roll 1 is provided on the outer peripheral surface of the spiral roll 1.
When it rotates to the left (or right), a spiral groove 2 is formed that advances in the direction of arrow A.

The spiral groove 2 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 2 are in the same direction in FIG. 1, they can also be formed in opposite spiral directions.

3 is a spiral ridge portion of the spiral roll 1. The spiral rolls 1 are formed to have the same diameter throughout.

The spiral roll 1 that became the spiral roll 1 is
Each peak 3 has a slight narrowing, and the peak 3
The grooves 3 and 3 are arranged side by side so that the spiral grooves 2 and 2 rotate in a matched state. Seed transfer grooves 4 in the shape of a star are respectively formed on the upper surfaces of narrow spaces between the spiral rolls 1 arranged in parallel. That is, a plurality of spiral rolls 1 are arranged side by side in the left-right direction, and the number of spiral rolls 1 is such that the number of seed transfer grooves 4 is equal to the number of pots 6 of the pot sheet seedling boxes 5 passing under the spiral rolls 1. /2. For example, in this embodiment, the number of pots 6 in the pot sheet seedling box 5 is
Since there are 16, the number of seed transfer grooves 4 is 8, and therefore the number of spiral rolls 1 is 9.

Therefore, the seed moving groove 4 is provided so as to be directly above the position of every other pot 6 of the pot sheet seedling box 5 passing under each spiral roll 1, and the seed moving groove 4 is arranged in a spiral manner with the position of the seed moving groove 4 being shifted. Two sets of rolls 1 are provided in the front and rear direction, and seeds are sown in pots 6 of a pot sheet seedling box 5 by the two sets of spiral rolls 1.

Each spiral groove 2 of each spiral roll 1 arranged in parallel
are combined from the left and right sides to form one fitting groove 7, but the size of the fitting groove 7 is formed to be smaller than the seeds 8 sown in the seed transfer groove 4 at most.

Reference numeral 9 denotes the tip shaft portion of the spiral roll 1. A sprocket 10 is attached to the tip shaft portion 9 of the spiral roll 1, and a chain 11 is wound around each sprocket 10 to rotate it.

Each of the spiral rolls 1 has a starting end 12 with a low height h
In addition, the terminal end portion 13 is formed with a high H shape. 14 is the ground.

A rotating brush 15 is provided above the seed moving groove 4 between the starting end 12 and the terminal end 13 to level the seeds moving in the seed moving groove 4 from the starting end 12 toward the terminal end 13. Brush 1 of the rotating brush 15
6 is formed to be at least shorter than the radius of the spiral roll 1, and is rotated so as to sweep out excess seeds (seeds not fitted into the fitting groove 7) moving in the seed moving groove 4 toward the starting end 12 side.

A suction device 17 is provided below the spiral roll 1. The suction device 17 allows suction air to blow through the fitting groove 7 from top to bottom, and sucks the seeds moving in the seed transfer groove 4 downward, so that the seeds stand upright and are attracted to the fitting groove 7. It is intended to do so. The suction device 17 is installed by pivoting the intermediate shaft portion 19 and rear end portion 20 of the spiral roll 1 on a suction case 18, and includes a side plate 21 on either the left or right side of the suction case 18.
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.

In the figure, 24 is a drop port, and 25 is a supply section.

(effect) Next, we will discuss the effect.

When the sprocket 10 attached to the tip shaft portion 9 of the spiral roll 1 is rotated by the chain 11,
Each spiral roll 1 simultaneously rotates to the left (or rotates to the right). Since the spiral grooves 2 and peaks 3 of the spiral rolls 1 arranged in parallel are aligned on the left and right, seed transfer grooves 4 are formed on the upper surface between the spiral rolls 1, respectively. A spiral groove 2 and a fitting groove 7 in which two spiral grooves 2 are combined are formed below the seed transfer groove 4. Then, the fitting grooves 7 of the seed moving grooves 4 advance in the direction of arrow A in a state of alignment.

Therefore, a suction device 1 is provided below the spiral roll 1.
7 is provided, and when air is sucked from the suction port 22 of the device 17, suction air blows through the fitting groove 7 from top to bottom and sucks the seeds moving in the seed transfer groove 4 downward, so that the seed movement Starting end 12 of groove 4
When the seeds 8 are supplied to the side, the seeds 8 fit in the fitting groove 7 in an upright state, and move in the direction A in the seed transfer groove 4 without coming off while being fitted, and the seeds 8 move in the direction A to the terminal end 13.
Seeds are sown into the pot 6 of the pot sheet seedling box 5 passing below from the side drop opening 24. Further, since the brush 16 of the rotary brush 15 rotates to sweep the excess seeds that do not fit into the fitting groove 7 of the seed transfer groove 4 back toward the starting end 12 side, they are not swept back toward the starting end 12 side. It will be done.

Regarding the falling of the seeds 8, one seed falls when each spiral roll 1 rotates once in a single-thread spiral, two seeds fall when each spiral roll 1 rotates once in a double-thread spiral, and two seeds fall when each spiral roll 1 rotates once in a multi-thread spiral. When it rotates once, many particles fall. Therefore, if the rotational speed of each spiral roll 1 by the motor is adjusted 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.

Therefore, a plurality of spiral rolls 1 are arranged side by side in the left-right direction, and the number of spiral rolls 1 is equal to the number of seed transfer grooves 4, and the number of pots 6 of the pot sheet seedling box 5 passing under the spiral roll 1. For example, when the number of pots 6 in the pot sheet seedling box 5 is 16, the number of seed transfer grooves 4 is "8", and the nine spiral rolls 1 are arranged in parallel. Since the seed moving groove 4 is provided so as to be directly above the position of every other pot 6 of the pot sheet seedling box 5 passing under each spiral roll 1, the seeds 8 are transferred to the pot sheet seedling box 5. The diameter of the spiral roll 1 can be formed to the width of two of each pot 6, and the spiral roll 1
Not only is it easy to manufacture, but also the seed transfer groove 4
A sufficient depth can be ensured and seeding can be done reliably.

In addition, since two sets of spiral rolls 1 with shifted positions of the seed transfer grooves 4 are provided in the front and back direction, the pots 6 of the pot sheet seedling box 5 are moved by the two sets of spiral rolls 1.
Sow the seeds.

(Effect) The specification of the earlier Japanese Patent Application No. 59-20106 filed by the same applicant states that spiral rolls with spiral grooves formed on their outer peripheral surfaces are arranged side by side, and seed transfer grooves are formed between the spiral rolls. , it has been proposed that seeds are sown in the seed movement groove and the spiral grooves are used to accurately move the seeds one by one.

However, the number of pots in the pot sheet seedling box is
Due to the planting structure of the rice transplanter, usually about 18 seeds are installed horizontally in a row, and in this case, the seed transfer grooves formed between the spiral rolls ensure that all the pots in the pot sheet seedling box are filled at once. In order to supply seeds one by one, there must be 18 seed transfer grooves lined up horizontally. Therefore, the diameter of the spiral roll must be formed to match the width of each pot, and the spiral roll becomes quite thin, making it difficult to manufacture and making it impossible to ensure a sufficient depth of the seed transfer groove.

However, in the present invention, a large number of horizontal or inclined axis-centered spiral rolls 1 having feeding spiral grooves 2 formed on the outer circumferential surface are arranged side by side so that the spiral grooves 2 are aligned with each other and move. Seed transfer grooves 4 are formed on the upper surface between 1, 1, . 6, and two sets of such devices are installed in the moving groove 4.
Shift the position of the seedling box 5 by one pot to the side.
Since the seeding device is disposed in the moving direction, the seeds sown in the seed moving groove 4 can be accurately moved one by one.

In addition, the number of pots 6 in the pot sheet seedling box 5 is usually about 18, which are arranged horizontally in a row due to the planting structure of the rice transplanter.
The seed transfer groove 4 formed between the spiral rolls 1 and 1 allows all the pots 6 of the pot sheet seedling box 5 to be
In order to supply one seed at a time, the number of seed transfer grooves 4 must be lined up horizontally, 18, and the diameter of the spiral roll must be formed to the width of each pot. The diameter of the spiral roll of the present invention can be made as large as two pots, and the diameter of the spiral roll of the present invention can be reduced to the size of two pots. 1 is not only easy to manufacture, but the depth of the seed transfer groove 4 can be ensured sufficiently, so that seeds can be reliably sown.

Since two sets of such devices are arranged in the moving direction of the seedling box 5 with the position of the moving groove 4 shifted by one pot laterally, special mechanisms such as a mechanism for moving the seedling box 5 laterally and a mechanism for moving the seedling box 5 back and forth are required. Seeds can be easily and accurately sown in each pot 6 without requiring any special mechanism.

This effect is achieved.

[Brief explanation of the drawing]

Figure 1 is an overall perspective view, Figure 2 is a plan view of main parts,
FIG. 3 is a longitudinal sectional side view of the main part, and FIG. 4 is a longitudinal sectional front view of the main part. Explanation of symbols, 1... Spiral roll, 2... Spiral fitting groove, 3... Mountain part, 4... Seed transfer groove, 5... Pot sheet seedling box, 6... Pot, 7... Fitting groove,
8...Seed, 9...Tip shaft portion, 10...Sprocket, 11...Chain, 12...Starting end, 13...
...Terminal part, 14... Ground, 15... Rotating brush,
16... Brush, 17... Suction device, 18... Suction case, 19... Intermediate shaft section, 20... Rear end section,
21... Side plate, 22... Suction port, 23... Connection section, 24... Drop port, 25... Supply section.

Claims (1)

[Claims] 1. A large number of horizontal or inclined helical rolls 1 having feeding spiral grooves 2 formed on the outer circumferential surface are arranged side by side so that they move with their spiral grooves 2 matching each other, and each of the helical rolls 1, 1... A seed moving groove 4 is formed on the upper surface between the spiral rolls 1, and the seeds are sucked through the space between the spiral rolls 1, so that the seeds are supplied into the moving groove 4. A suction device 17 is provided to attract seeds to the moving groove 4. The seeding device is set so that seeds can be sown every other seedling, and two sets of such devices are arranged in the moving direction of the seedling box 5 with the position of the moving groove 4 shifted by one pot laterally.