JPH0441965B2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present 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) In the past, seedlings with soil for rice transplanters have progressed from using seedlings sown in bulk to seedlings with soil sown in rows, and recently, seedlings made of paper material called pot sheet seedlings have been used. Seedlings sown one by one on pot sheets are appearing. Compared to conventional seedlings, these seedlings grow better and have thicker stems at the top, making them more resistant to cold damage.

Although it is not publicly known, in the specification and drawings of the earlier Japanese Patent Application No. 59-24671 filed by the same applicant, there is a description of a horizontal or inclined spiral roll having a feed spiral groove formed on its outer peripheral surface. A similarly formed inclined-axis spiral roll is provided, a seed transfer groove is formed on the upper surface of the inclined-axis center spiral roll, and the seeds supplied to the transfer groove are placed below each of the helical rolls into the transfer groove. A structure has been proposed in which a suction device for adsorption is provided, and a rotating brush is provided above the movement groove to rotate in the opposite direction to the seed movement direction.

(Problems to be Solved by the Invention) The prior application has a structure in which a rotating brush is provided above the seed moving groove, so there is a problem that the seeds above the spiral roll cannot be leveled. .

(Means for Solving the Problems) Therefore, the present invention provides a horizontal or inclined axis spiral roll 1 having a feed spiral groove 2 formed on its outer peripheral surface, and an inclined axis spiral roll 1 similarly formed therein, A seed moving groove 4 is formed on the upper surface of the inclined axis spiral rolls 1, 1, and a suction is provided below each of the spiral rolls 1, 1 to attract the seeds supplied to the moving groove 4 into the moving groove 4. A device 19 is provided to form one of the moving grooves 4 at the starting end 12 and the other at the terminal end 13,
Above each of the spiral rolls 1, 1 and the moving groove 4, there is a leveler which is perpendicular to the axial direction of the inclined-axis spiral roll 1 and smoothes the seeds 8 moving from the starting end 12 toward the terminal end 13. A leveling device is provided, and the shape of the lower surface of the leveling device is formed to match the shape of the upper surface of the spiral rolls 1, 1 and the shape of the seed transfer groove 4, as a seeding device.

(Example) To explain the example with the drawings, 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.
Alternatively, it may be a counter-spiral.

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 rolls 1 and the adjacent spiral rolls 1 are rotated so that each spiral roll 1, 1 rotates with a slight narrowing, and the ridges 3 and 3 and the spiral grooves 2 and 2 coincide. are installed in parallel. 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 equal to the number of seed transfer grooves 4 equal to the number of pots 6 of paper pot seedling boxes 5 passing under the spiral rolls 1. Make it 1/2. for example,
In this embodiment, the pot 6 of the paper pot seedling box 5 is
Since the number of seed transfer grooves 4 is 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 was provided so as to be directly above the position of every other pot 6 of the paper pot seedling box 5 passing under each spiral roll 1, and the position of the seed moving groove 4 was shifted. Two sets of spiral rolls 1 are provided in the front-rear direction, and seeds are sown in pots 6 of a paper pot 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.

Start end 12 and end end 1 of spiral rolls 1 arranged in parallel
3, a rotating brush 15 is provided above the seed moving groove 4 to level the seeds moving in the seed moving groove 4 from the starting end 12 toward the terminal end 13. The rotating brush 15 is installed so that its axial direction is perpendicular to the axial direction of the spiral roll 1.
6 is formed along the upper surface of the spiral roll 1 and the shape of the seed transfer groove 4 so as to be in slight contact with it.
Therefore, the brush 16 at the upper part of the seed transfer groove 4
is formed to be at least shorter than the radius of the spiral roll 1, and its generatrix shape is made to match the surface shape of the spiral roll 1 side. And the seed transfer groove 4
is rotated so as to sweep out the extra seeds (seeds not fitted into the fitting groove 7) toward the starting end 12.

(Also, a leveling plate 17 may be provided in place of the rotating brush 15. The leveling plate 17 is made of a material such as rubber, and the lower end 18 is between the upper surface of the spiral roll 1 and the seed transfer groove 4. (It is formed in a shape that matches the seed moving groove 4 so that only a slight gap occurs between the two.) A suction device 19 is provided below the spiral roll 1. 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 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 19 is installed by pivoting the intermediate shaft portion 21 and rear end portion 22 of the spiral roll 1 on a suction case 20, and includes a side plate 23 on either the left or right side of the suction case 20.
The suction port 24 is opened, a connecting portion 25 is formed outside the suction port 24, and a hose of a suction machine (not shown) is connected thereto.

(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.
9 is provided, and when air is sucked from the suction port 24 of the device 19, the suction air blows from top to bottom through the fitting groove 7, sucking the seeds moving in the seed transfer groove 4 downward, so that the seeds 8 It fits into the fitting groove 7 in an upright state, and moves in the direction A in the seed moving groove 4 without coming off while being fitted.

At this time, the brush 16 of the rotating brush 15 has a generating line shape that matches the surface shape of the spiral rolls 1, 1, and the upper surface of the spiral roll 1 and the seed transfer groove 4.
The brush 16 at the top of the seed moving groove 4 is formed to be at least shorter than the radius of the spiral roll 1 to remove excess seeds moving through the seed moving groove 4 (fitting groove 7 (Seeds that are not fitted in the seed) Since the rotating brush rotates to sweep back toward the starting end 12 side, excess seeds that are not fitted in the fitting grooves 7 of the seed transfer grooves 4 are removed from the starting end by the rotation of the rotating brush 15. It is swept back to the 12 side and leveled.

In addition, extra seeds that are not fitted into the fitting grooves 7 of the seed transfer grooves 4 may rotate together with the spiral roll 1 and move to the adjacent seed transfer grooves 4 and not fit into the fitting grooves 7. However, the excess seeds on this spiral roll 1 are also removed from the starting end 12 by the rotation of the rotating brush 15.
Level by sweeping back to the side.

Further, the leveling plate 17 is formed of a resilient material such as a rubber plate, and the lower end is formed into a seed transfer groove so that only a slight gap is formed between the upper surface of the spiral roll 1 and the seed transfer groove 4. 4, the extra seeds that do not fit into the fitting groove 7 are leveled and securely fit into the fitting groove 7 one by one and moved.

In this case, one seed 8 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 from each spiral roll in a multi-thread spiral. When 1 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. .

(Effects) The present invention provides an inclined axis spiral roll 1 formed in the same manner adjacent to a horizontal or inclined axis spiral roll 1 having a feed spiral groove 2 formed on its outer peripheral surface, and the inclined axis spiral roll 1, A seed moving groove 4 is formed on the upper surface of the moving groove 1, and a suction device 19 is provided below each of the spiral rolls 1, 1 to suck the seeds supplied to the moving groove 4 into the moving groove 4. 4, one of which is formed at the starting end 12 and the other at the terminal end 13, and the upper part of each of the spiral rolls 1, 1 and the moving groove 4 is provided with a starting end that is perpendicular to the axial direction of the inclined axis spiral roll 1. A leveling device is provided for leveling the seeds 8 moving from the portion 12 toward the terminal end portion 13, and the shape of the lower surface of the leveling device is made to match the top surface of the spiral rolls 1, 1 and the shape of the seed moving groove 4. The lower surface shape of the leveling device is made to match the upper surface shape of the spiral rolls 1, 1.
The seeds on the top can also be leveled, the leveling action is reliable, and each grain is accurately transferred from the leveling device to the terminal end 13 side.

Therefore, accurate seeding is possible, and vegetable seeds can be sown into the pot sheet seedling box 5 and vegetable seeds that do not require thinning.

This effect is achieved.

[Brief explanation of drawings]

FIG. 1 is an overall perspective view, FIG. 2 is a longitudinal sectional front view of the main part, FIG. 3 is a longitudinal sectional side view of the main part, and FIG. 4 is a longitudinal sectional side view of the main part. Explanation of symbols, 1... Spiral roll, 2... Spiral groove, 3... Spiral crest, 4... Seed transfer groove, 5...
Paper pot seedling box, 6...pot, 7...fitting groove, 8...seed, 9...tip shaft, 10...sprocket, 11...chain, 12...starting end, 1
3... End portion, 14... Ground, 15... Rotating brush, 16... Brush, 17... Leveling plate, 18...
Lower end part, 19... Suction device, 20... Suction case, 21... Intermediate shaft part, 22... Rear end part, 23...
...Side plate, 24...Suction port, 25...Connection part.

Claims (1)

[Claims] 1. A horizontal or inclined-axis spiral roll 1 having a feed spiral groove 2 formed on its outer circumferential surface is provided adjacent to the inclined-axis spiral roll 1 similarly formed, and seeds are formed on the upper surface of the inclined-axis spiral rolls 1, 1. forming a moving groove 4;
A suction device 19 is provided below each of the spiral rolls 1, 1 to suck the seeds supplied to the moving groove 4 into the moving groove 4, and one side of the moving groove 4 is connected to the starting end 1.
2 and the other end is formed at the terminal end 13, and the upper part of each of the spiral rolls 1, 1 and the moving groove 4 is perpendicular to the axial direction of the inclined axis spiral roll 1 and has a starting end 1.
A leveling device is provided for leveling the seeds 8 moving from 2 toward the terminal end 13.
A seeding device formed to match the shape of.