JP2899380B2 - Pot seedling sowing mechanism - Google Patents

Description

The present invention relates to a mechanism for sowing seeds in pot trays, such as radish, spinach, and lettuce, which can be divided into individual seedlings.

(B) Conventional technology Conventionally, a technology relating to a pot seedling sowing mechanism for sowing accurately on a pot tray has been known.

For example, as disclosed in Japanese Utility Model Publication No. 63-12660.

(C) Problems to be Solved by the Invention However, in the conventional technique, the pot tray is transported by engaging the projections by rotating the driving roll. In the length of the pot tray, it is necessary to arrange the seeding roll, the pressing opening roller and the pressure reducing roller, and the pressing and opening of the pressing tray within a very short time while the pot tray is engaged with the protrusion of the driving roll and transported. Thus, a series of operations such as sowing and crushing were performed, and accuracy of the seed position, the degree of crushing of the soil, and the thickness of the covering soil was sacrificed.

The present invention is configured to solve these problems, and the transfer of the pot tray is not performed by the engagement of the projection of the drive roller, but is performed by a conveyor on which the pot tray is placed, and transferred by the conveyor. The clutch arm detects the position of the pressure reduction protrusion of the coming pot tray and rotates the rollers such as the pressure opening roller and the pressure reduction roller.

(D) Means for Solving the Problems The problems to be solved by the present invention are as described above. Next, means for solving the problems will be described.

In the mechanism (1), a pot 12a is opened at a predetermined interval on the pot tray 12, and the pot tray 12 is intermittently transported by the conveyor 25. Projections corresponding to the number of the pots 12a are protruded, a clutch arm 6 is protruded from the outer periphery of the pressing opening roller 1, and the center of gravity of the pressing opening roller 1 is arranged so that the portion of the clutch arm 6 hangs down. When the leading end of the pot tray 12 is engaged with the clutch arm 6 and pressed, the pressing opening roller 1 is rotated and the projection is fitted into the pot 12a.

According to claim (2), in the pot seedling sowing mechanism according to claim (1), the clutch arm 6 can be finely adjusted in the rotation angle direction of the pressing opening roller 1.

According to claim (3), in the pot seedling sowing mechanism according to claim (1), the seed 15 is sown by the sowing roll 3 in the seeding hole 26 opened in the soil in the pot 12a.
Is disposed at the bottom of the seeding hole 26.

According to a fourth aspect of the present invention, in the pot seedling sowing mechanism according to the third aspect, the clutch arm 7 and the crushing protrusion 2a are provided on the seed crushing roller 2, and the seed crushing roller 2 is driven to rotate with the transfer of the pot tray 12. Then, the seed 15 is suppressed.

According to claim (5), in the pot seedling sowing mechanism according to claim (3), the pot 12 is provided before the sowing roll 3.
A pressing opening roller 1 for pressing and opening the soil in a is provided, and the pressing opening roller 1 and the seed suppression roller 2 have the same configuration.

(E) Embodiment The problems to be solved and means to be solved by the present invention are as described above. Next, the configuration of the embodiment shown in the attached drawings will be described.

FIG. 1 is an overall side sectional view of the pot seedling sowing mechanism of the present invention, FIG. 2 is a side sectional view of a portion of the pressing opening roller 1, FIG. 3 is a side sectional view of a portion of the pressing opening roller 1, and FIG. FIG. 4 is a side sectional view of a part of the seeding roll 3, FIG. 4 is a side sectional view of a part of the seed suppression roller 2, and FIG. 5 is a side sectional view of a part of the suppression brush 5.

 The overall configuration will be described with reference to FIG.

The conveyor 25 is driven by a separately provided drive motor, and the pot tray 12 fitted in the seedling box 11 is placed on the conveyor 25.

A nursery soil tank 9 and a nursery soil feeding device 14 are arranged on a path along which the pot tray 12 is transferred by the conveyor 25.

Then, seedling soil falling from the seedling soil feeding device 14 is filled in the pot 12a of the pot tray 12, and a ground leveling plate 10 for scraping unnecessary seedling soil is disposed.

The surface of the soil leveled by the leveling plate 10 is pressed by the pressing and opening roller 1 and is opened by the pressing and opening protrusion 1a simultaneously with the pressing.

On the downstream side of the pressing opening roller 1, a seeding roll 3 for sowing in a seeding hole 26 opened by the pressing opening protrusion 1a is provided.

A seed tank 8 is disposed above the seeding roll 3, and seeds held and fed out between the seeding roll 3 and the holding arc cover 35 are accurately positioned in the seeding hole 26.
Drop by the desired number of grains.

The seed pressure reduction roller 2 is disposed downstream of the seeding roll 3. The shape of the seed pressure reduction roller 2 and the pressure reduction protrusion 2a is the same as that of the pressing opening roller 1.

Then, the seeds sown in the seeding hole 26 are further added to the seeding hole.
Presses and pushes into the bottom of 26.

A pressure reduction brush 5 is disposed downstream of the seed pressure reduction roller 2, and the surface of the seedling raising soil is shaved by the pressure reduction brush 5 to cover the seeding hole 26.

The surface pressure reduction roller 4 is disposed downstream of the pressure reduction brush 5, and the surface pressure reduction roller 4 may be driven by a driven drive method in which a clutch arm is projected from the outer periphery. The motor may be driven by a motor by detecting the end.

By means of the surface pressure reducing roller 4, the pressure reducing brush 5 reduces the surface soil of the pot tray 12 on which the soil is leveled.

According to the present invention, in the above-described configuration, the pressing opening roller 1 and the seed pressure reducing roller 2 are formed of rollers having the same shape, and the driving rotation of the rollers is performed by the clutch arms 6 and 7, and the driving force of the rollers is reduced. The transfer force of the pot tray 12 is converted by the conveyor 25 and used.

Next, a drive mechanism of the pressing opening roller 1 and the seed pressure reducing roller 2 will be described with reference to FIGS.

Since the pressing opening roller 1 serves to open and infuse the seeding hole 26, the pressing opening protrusion 1a must exactly match the inside of the pot 12a, and the end of the pot tray 12 is conventionally connected to an electric switch by an electric switch. Detect and press roller 1
Was started to rotate by the motor.

However, in the case of control by switches and motors,
The position of the pressing opening protrusion 1a and the position of the pot 12a are likely to be displaced, and it is necessary to arrange a sensor switch in each part, and there is a problem that the number of motors increases.

In the present invention, as shown in FIG. 4, the tip of the pot tray 12 placed on the conveyor 25 and conveyed by the conveyor 25 comes into contact with the clutch arm 7, so that the pressing opening roller 1 The structure is such that the seed suppression roller 2 starts rotating.

Then, when the pressing opening roller 1 and the seed pressure reducing roller 2 start rotating, the pressing opening protrusion 1a and the pressure reducing protrusion 2a are fitted into the pot 12a, so that they are engaged, and further rotate, and the pressing opening roller 1 The rotation of the pressing opening roller 1 and the seed crushing roller 2 is stopped only at a position before the next rotation of the circumference of the seed crushing roller 2 and the next seedling box 11 comes.

By one rotation of the pressing opening roller 1 and the pressing opening protrusion 1a, the pressing opening protrusion 1a is fitted in the pot 12a, and the seeding hole 26 is opened.

Then, the rollers stop rotating, and the next pot tray 12
In the state where the clutch arms 6 and 7 return to the lower vertical position,
1b is provided.

That is, the center-of-gravity adjusting opening 1b is opened to reduce the weight except for the portion where the clutch arm 6 is attached.

A long hole 18 is provided in the clutch arm 6 so that the angle of the clutch arm 6 protruding from the outer periphery and laying on the pressing opening roller 1 can be finely adjusted in the direction of the circumferential angle. It can be adjusted by tightening again.

The seed pressure reduction roller 2 has substantially the same shape as the pressing opening roller 1, and has a clutch arm 7 projecting to the outer periphery thereof. The transfer of the pot tray 12 rotates the clutch arm 7, and at the same time, rotates the seed pressure reduction roller. 2, the seeds 15 sown in the seeding hole 26 by the crushing protrusion 2a are pushed into the bottom of the seeding hole 26.

Further, the number of the pressure suppression protrusions 2a is configured to be exactly the size of one pot tray 12.

The clutch arm 7 of the seed crushing roller 2 is also adjustable by an elongated hole 22 and an adjusting bolt 21 so that the relative position between the tip of the pot tray 12 and the crushing protrusion 2a can be adjusted.

If the pot trays 12 are sent continuously and in a short time, the clutch arm 6 or the clutch arm 7 may not be able to return to the vertical state. So that it cannot be mounted.

In FIG. 3, 35 is a holding arc cover, and 16 is a scraping brush.

(F) Effects of the Invention The present invention is configured as described above, and has the following effects.

A mechanism for intermittently transferring the pot tray 12 by a conveyor 25 by opening the pots 12a at predetermined intervals on the pot tray 12 as claimed in claim (1). Projections corresponding to the number of the pots 12a are protruded, a clutch arm 6 is protruded from the outer periphery of the pressing opening roller 1, and the center of gravity of the pressing opening roller 1 is arranged so that the portion of the clutch arm 6 hangs down. When the leading end of the pot tray 12 is engaged with the clutch arm 6 and pressed, the pressing opening roller 1 rotates, and
12a, so that the position of the front end of the pot tray 12 is detected by a switch as in the conventional case, and the motor is rotated to rotate the rollers. There is no displacement, and the rotation of the roller can be started and stopped by a mechanical structure, so that inspection and repair are easy and the operation is performed reliably.

As described in claim (2), the clutch arm 6 can be finely adjusted in the rotation angle direction of the pressing opening roller 1, so that the distance between the end of the pot tray 12 and the position of the pot 12 a is adjusted by the pot tray 12. Even when the clutch arm 6 is changed, it is possible to return the clutch arm 6 to an accurate position by finely adjusting the position.

The seed 15 is sown by the sowing roll 3 in the sowing hole 26 opened in the soil in the pot 12a as in claim (3).
Since the seed suppression roller 2 that presses the seed 15 to the bottom of the seeding hole 26 is arranged, the seed 15 that is light and adheres to the side surface of the pot 12a and stops is pressed into the bottom of the pot 12a by the suppression protrusion 2a. As a result, the position of the seed 15 can be kept constant, and germination and growth can be standardized.

As described in claim (4), a clutch arm 7 and a pressure reduction protrusion 2a are provided on the seed pressure reduction roller 2, and the seed pressure reduction roller 2 is driven to rotate and the pressure of the seeds 15 is reduced when the pot tray 12 is transferred. The position and the position of the seed pressure reduction roller 2 can be arranged apart from each other, and the pressure can be suppressed by the seed pressure reduction roller 2 at a position where the state after seeding is stable.

As in claim (5), a pot is provided before the seeding roll 3.
A pressing opening roller 1 for pressing and opening the soil in 12a is provided,
Since the pressure opening roller 1 and the seed pressure reduction roller 2 have the same configuration, the pressure opening roller 1 and the seed pressure reduction roller 2 can use exactly the same components, thereby reducing the cost. Even when the pressure-reducing projections 2a of the seed pressure-reducing roller 2 are fitted into the pot 12a opened by the step 1, since they fit into the same hole, there is a high possibility that they fit exactly.

[Brief description of the drawings]

FIG. 1 is an overall side sectional view of a pot seedling sowing mechanism of the present invention,
2 is a side sectional view of a portion of the pressing opening roller 1, FIG. 3 is a side sectional view of a portion of the pressing opening roller 1, FIG. 3 is a side sectional view of a portion of the seeding roll 3, and FIG. FIG. 5 is a side sectional view of a portion of the roller 2 and FIG. DESCRIPTION OF SYMBOLS 1 ... Pressing opening roller 1a ... Pressing opening protrusion 2 ... Seed suppression roller 2a ... Suppression protrusion 3 ... Seeding roll 4 ... Surface suppression roller 5 ... Suppressing brush 6,7 ... Clutch arm 8 ... Seed Tank 11 …… Seedling box 12 …… Pot tray 12a …… Pot

Claims (5)

(57) [Claims] A mechanism for opening a pot (12a) at predetermined intervals on a pot tray (12) and intermittently transferring the pot tray (12) by a conveyor (25), wherein a pressing opening roller (1) is used to feed one pot tray (12a) of the pot tray (12). Of the clutch arm 6 from the outer periphery of the pressing opening roller 1.
And the center of gravity of the pressure opening roller 1 is arranged so that the portion of the clutch arm 6 hangs down.
A pot seedling seeding mechanism characterized in that the pressure opening roller 1 is rotated by the tip of 12 engaging and pressing the clutch arm 6 so that the projection fits into the pot 12a. 2. The pot seedling sowing mechanism according to claim 1, wherein the clutch arm (6) can be finely adjusted in the rotation angle direction of the pressing opening roller (1). 3. The seedling sowing mechanism according to claim 1, wherein the seed 15 is sowed by a sowing roll 3 in a sowing hole 26 opened in the soil in the pot 12a, and the seed 15 is placed on the bottom of the sowing hole 26. A seed-seeding mechanism for pot seedlings, wherein a seed pressure roller 2 for pressing is disposed. 4. A pot seedling sowing mechanism according to claim 3, wherein the seed pressure reducing roller 2 includes a clutch arm 7 and a pressure reducing protrusion.
2a, wherein the seed pressure reduction roller 2 is driven to rotate with the transfer of the pot tray 12 to reduce the pressure of the seeds 15. 5. The seedling sowing mechanism according to claim 3, further comprising: a pressing opening roller 1 for pressing and opening the soil in the pot 12a before the sowing roll 3; 2. A pot seedling sowing mechanism, wherein 2 has the same configuration.