JPH047164B2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a seeding device, and in particular,
In one pot of the pot sheet seedling box,
There is no need to use a seeding device that can sow one or two seeds at a time, or, for example, to sow radish seeds or coated lettuce seeds one or two at a time, and to thin out the seeds after sowing. This is related to a seeding device that does not have a seeding device.

(Prior Art) Conventionally, seedlings grown with soil by rice transplanters have progressed from seedlings sown in bulk to seedlings sown with soil in rows. and,
Recently, soiled seedlings called pot sheet seedlings have appeared, in which one seed is sown in each pot of a pot sheet made of paper material. These soil-grown seedlings grow well and have thick and strong stems, making them resistant to cold damage. Therefore, although it has become quite popular, until now there has been no device that can reliably sow one seed in each pot, so it has been difficult to create seedlings in pot sheets in the past.

Accordingly, the conventionally known registered utility model No. 341599 discloses a spiral groove having a concave portion smaller than the seed on the outer peripheral surface and a small diameter portion larger than the seed formed in a part of the spiral groove. roll and
It is described that a roll having an annular groove formed on the outer circumferential surface is arranged side by side, and seeds are dropped when a part of the small diameter part of the spiral groove coincides with the annular groove.

Furthermore, although it is not known in the art, the specification of the earlier Japanese Patent Application No. 19065/1983 by the same applicant states that horizontal or inclined helical rolls having spiral grooves in the same direction on their outer circumferential surfaces are arranged in parallel to each other. A seeding device has been proposed in which the spiral grooves are arranged side by side so that they move in alignment and rotate in the same direction, and a seed transfer groove is formed on the upper surface between the pair of spiral rolls.

(Problems to be Solved by the Invention) What is described in the Registered Utility Model No. 341599 is that when the spiral roll and the roll are rotated and the small diameter part of a part of the spiral groove and the annular groove coincide with each other, Since the structure is designed to drop seeds, there is a problem that the position and timing of the seeds falling are not constant, making accurate sowing impossible.

In this regard, the method proposed in the earlier Japanese Patent Application No. 19065/1980 moves while the spiral grooves are aligned with each other, so each grain is reliably transported and can be sown in the desired position accurately. Since both spiral rolls are rotated in the same direction, they rotate in opposite directions where the spiral grooves match, one rotating upward and the other rotating downward. Therefore, there is a problem that the seeds may rotate together with the spiral roll that rotates downward and bite into the seed movement groove.

(Means for Solving the Problems) The present invention solves this problem, and includes a horizontal or inclined axis spiral roll 1 with a left-handed feed spiral groove 3 formed on the outer circumferential surface, and a right-handed feed spiral roll 1 on the outer circumferential surface. Groove 4
A horizontal or inclined axial spiral roll 2 formed with
This is a spot sowing device in which a seed moving groove 14 is formed on the upper surface between the pair of spiral rolls 1 and 2, with the spiral grooves 3 and 4 arranged side by side so that they move while matching each other.

(Example) To explain with an example diagram, 1 is a spiral roll on the left side, and on the outer circumferential surface of the spiral roll 1, there is a spiral groove 3 that moves in the direction of arrow A when the spiral roll 1 rotates to the left (or right). is formed. Reference numeral 2 denotes a right helical roll, and a helical groove 4 is formed on the outer circumferential surface of the helical roll 2, which moves in the direction of arrow A when the helical roll 2 rotates clockwise (or counterclockwise).

The spiral grooves 3 and 4 may be either a single-thread spiral or a double-thread spiral, but experimental results show that a three-thread spiral is preferred.

5 is a spiral ridge portion of the spiral roll 1, and 6 is a spiral ridge portion of the spiral roll 2.

The spiral rolls 1 and 2 are both formed to have the same diameter from beginning to end, and are arranged side by side so that they 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 (FIG. 2), and a seed transfer groove 14 is formed on the upper surface between them. The spiral groove 3 and the spiral groove 4 are combined to form a fitting groove 7, and the size of the fitting groove 7 is formed to be smaller than the seed 8 at most.

9 is the shaft of the left spiral roll 1, and 10 is the shaft of the right spiral roll 2. Sprockets are attached to the shafts 9 and 10, and both are rotated by a chain so as to rotate without shifting.

The spiral rolls 1 and 2 have a low starting end 11 (h),
The terminal end portion 12 is formed high (H). 13 is the ground.

(effect) Next, we will discuss the effect.

shafts 9 of the left spiral roll 1 and the right spiral roll 2;
When a chain is placed around the sprocket attached to the shaft 10 so that these rotate in opposite directions, the left helical roll 1 and the right helical roll 2 rotate in opposite directions at the same time.

However, since the spiral fitting grooves 3 and 4 and the peaks 5 and 6 are aligned and are formed in opposite spirals,
The fitting groove 7, which is the combination of the spiral groove 3 and the spiral groove 4, moves in the direction of arrow A in a synchronized state.

Therefore, the seeds 8 are transferred to the seed moving groove 14 of the starting end 11.
, the seeds 8 fit into the fitting groove 7 one by one and move in the A direction, and fall one by one from the terminal end 12. In this case, the seeds 8 fall as follows.
In a single spiral, when the spiral rolls 1 and 2 rotate once,
One grain falls.

Therefore, the spiral rolls 1 and 2 by the motor
If the rotational speed is set to the speed given at the time of design, it becomes possible, for example, to drop one grain at a time into the center of a pot sheet passing below.

In addition, in the case of a field, for example, a request is made to drop one radish 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.

In the above case, one spiral roll 1 is formed with a left-handed rotation feed spiral groove 3, and the other spiral roll 2 is formed with a right-handed rotation feed spiral groove 4, and since they are rotated in opposite directions, the part of the fitting groove 7 Now, both rolls 1 and 2 can be rotated upward. Therefore,
The seeds 8 in the seed moving groove 14 can be prevented from co-rotating with the spiral rolls 1 and 2 and biting into them, allowing for smooth and accurate sowing.

Further, by making the depth of the spiral grooves 3 and 4 shallow, it is also possible to accurately transfer and sow small seeds (including coated seeds).

(Effects) The present invention provides a horizontal or inclined-axis helical roll 1 with a left-handed rotation feed spiral groove 3 formed on its outer circumferential surface, and a horizontal or inclined-axis helical roll 2 with a right-handed rotation feed helical groove 4 formed on its outer circumference. This is a seeding device in which a seed moving groove 14 is formed on the upper surface between the pair of spiral rolls 1 and 2 by disposing the spiral grooves 3 and 4 in parallel so that they move while being aligned with each other. If the rotational speed of the spiral rolls 1 and 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, a request is made to drop one radish seed accurately every 10 cm, but in this case, the forward speed of the machine and the rotation speed of spiral rolls 1 and 2 must be adjusted. This is easily possible by fully synchronizing.

One spiral roll 1 has a left rotation feed spiral groove 3.
, and the other spiral roll 2 has a clockwise rotation feed spiral groove 4 , and the two rolls 1 and 2 are rotated in opposite directions.
2 are both rotated upward, and the seeds 8 are spiral rolls 1,
This prevents it from rotating with 2 and digging in, allowing for smooth and accurate sowing.

Therefore, by reducing the depth of the spiral grooves 3 and 4, it is also possible to accurately transport and sow small seeds (including coated seeds).

This effect is achieved.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the main part, and FIG. 2 is a plan 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...
...Starting end, 12... Ending end, 13... Ground, 14
...Seed transfer groove.

Claims (1)

[Claims] 1. A horizontal or inclined axis helical roll 1 with a left rotation feed spiral groove 3 formed on its outer circumferential surface and a horizontal or inclined axis helical roll 2 with a right rotation feed helical groove 4 formed on its outer circumference are connected to each other with their respective helical grooves 3. , 4 are arranged in parallel so that they move while being aligned, and a seed moving groove 14 is formed on the upper surface between the pair of spiral rolls 1 and 2.