JP2516477Y2 - Seeding equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to the structure of a vacuum suction type seeding device.

[Conventional technology]

Prior art practice as a seeding device for sowing seeds in a nursery box for growing mat seedlings and vegetable seedlings used in rice transplanters
In the 57-22490 publication, a large number of suction ports are formed at appropriate intervals on the lower surface plate of the decompression box that communicates with an air suction means such as a vacuum cleaner through a hose, and the lower surface plate of this decompression box is Pressed against the seed tray containing a lot of seeds, and in this state by operating the suction means to suck the seeds one by one to each suction port on the lower plate, for the depressurized box transferred to the soil of the nursery box When the reduced pressure is released, the seeds at each adsorption port drop onto the soil, so that the seeds can be sown in the growing box at predetermined intervals.

Then, according to this seeding device, the suction port in the lower surface plate of the decompression box is opened on the lower surface of the protruding portion that projects downward, while the bottom of the seed tray has seeds at each position corresponding to the opening position of the suction port. A recess that fits only one grain is provided, and when the seed volume in the seed pan becomes small, the seed pan is rocked to the left and right, and one seed enters each recess, making it easy to adsorb the seed to the adsorption port. I have proposed a device that will be.

[Problems to be solved by the device]

By the way, in order to surely adsorb the seeds to the respective suction ports of the lower surface plate of the decompression box, the lower surface plate is brought into close contact with the seed saucer containing the seeds, and the atmosphere causes the surroundings of the lower surface plate and the seed saucer. It is preferable to devise such that the degree of vacuum near the suction port is increased, for example, by not entering much through the gap.

However, since the seed generally has a convex curved surface like a sphere or an ellipsoid, even if the seed tray in the above-mentioned prior art is covered with the lower surface plate of the decompression box from the upper surface in a state where a large amount of seed is put, the seed saucer The gaps between the seeds inside and the gaps other than the contact points between the seeds and the bottom plate cannot be increased to make the vacuum degree high, and the adsorption action becomes uncertain. There was a problem that occurs.

In order to solve this problem, in order to bring the upper surface of the seed tray and the lower surface plate of the decompression box into close contact with each other, it is necessary to form a recess for seed storage at each position corresponding to the suction port of the lower surface plate. Yes, if configured in this way, in the state where the amount of seeds in the recess is reduced, if the height to the seeds in the lower plate and the recess is large, the adsorption of seeds will not occur unless the degree of vacuum is increased significantly. However, this also caused the problem of uncertainty or inability.

The present invention aims to solve these problems.

[Means for solving the problem]

In order to achieve this object, the present invention provides a plurality of seed suction ports on the bottom plate of the decompression box communicating with the suction means, and has a recess for seed storage at a position corresponding to each suction port. In a seeding device configured to detachably mount the decompression box on the seed box, the seed box on which the decompression box is mounted is changed to an integrally inclined posture and a substantially horizontal posture. It is configured to be possible, when the lower plate of the decompression box and the upper surface of the seed box are tilted in a state of being brought into close contact with each other, the suction ports of the seed box with respect to the center of the recesses. It is configured so as to be displaced and open to the lower side of the slope.

[Function and effect of device]

In this configuration, when the suction means is turned on to reduce the pressure in the decompression box, the lower surface plate of the decompression box and the upper surface of the seed box are in close contact with each other at a position other than the suction port and the corresponding recessed part. The degree of vacuum in the recess and hence in the suction port is high, and even when the amount of seeds in the recess is large, the seeds in the recess can be reliably adsorbed by the suction port.

And, on the contrary, the amount of seeds in the recess of the seed box becomes small, the height dimension from the seeds to the bottom plate of the decompression box becomes large, and when the adsorption is not possible, the decompression box is brought into close contact with the seed box (in the suction means). When the seed box and the decompression box are integrally tilted in the operating state), since the respective suction ports are eccentrically located below the tilted side of the seed box with respect to the center of the recesses, the openings are opened. The seeds in the recess fall and approach the suction port, and immediately, the seeds can be sucked by each suction port under the action of the suction force at that position.

As described above, according to the present invention, it is possible to surely adsorb the seeds to the lower surface plate of the decompression box in both cases where the seed box has a large storage amount and a small storage amount,
When seeding the seedlings in the nursery box, there is a remarkable effect of eliminating the parts where the seeds are missing.

〔Example〕

Next, an embodiment of the present invention will be described. In the figure, the seeding device 1 includes a decompression box 2 having a lower surface plate 3 having suction ports 4 formed at regular intervals, and a recess 6 for storing seeds A. Seed box 5 formed by opening upward in accordance with the position of the suction port 4
And a suction means 9 such as a vacuum cleaner built in a cylindrical box-shaped machine frame 8 standing on one side of the base 7.

The seed box 5 is one side thereof or a frame body that supports the seed box 5.
An arm 10 standing upright from one side of the 28 is fixed to a rotary shaft 11 projecting laterally above the machine frame 8 so as to be suspended, and a handle 12 attached to the rotary shaft 11 holds the decompressor box 2 in place. The seed box 5 in the mounted state is appropriately angle-rotated from a position in which it is substantially horizontal to a position in which it is substantially vertical.

Then, the lower surface of the lower surface plate 3 of the decompression box 2 and the upper surface of the seed box 5 are formed in a planar shape so as to be in close contact with each other at a position other than the position of the recess 6.

Further, each of the suction ports 4 of the lower surface plate 3 is formed such that the lower end opening 4a thereof is spread downward (substantially conical) to the extent that the seed A is substantially fitted, and the lower end opening 4a of each suction port 4 is formed. With respect to the center line of the recess 6 is opened so that when the seed box 5 is tilted, the lower side of the tilt box 3 is appropriately displaced by a certain dimension, and in the embodiment shown in FIG. The axis of each suction port 4 formed at a right angle is displaced and opened such that the axis line of the suction port 4 is appropriately moved closer to the lower side of the inclination of the seed box 5 by the dimension (1) with respect to the center line of the recess 6, and is preferable. The closest to the lower side of the inner circumference of the recess 6 when the seed box is tilted.

Reference numeral 13 denotes a rubber stopper / abutment body that abuts the lower surface of the seed box 5 when the seed box 5 is substantially horizontal, and the abutment body 13 projects upward from the base 7. There is.

An intake port 14 on the upper surface of the decompression box 2 communicates with the suction means 9 through a flexible intake pipe 15, and switches 16 and 17 for turning on / off the suction means 9 are provided on the machine frame 8 and the decompression box 2 respectively. It is provided in the vicinity of the handle 18 and is connected so that the drive motor 19 of the suction means 9 can be turned on / off by any of the switches 16 and 17.

Reference numeral 20 is a decompression releasing device provided on an appropriate wall surface portion such as an upper surface or a side surface of the decompression box 2, and the decompression releasing device is an elastic film valve body 22 that covers an opening 21 formed in the decompression box 2. And a flat support member 23 for supporting the peripheral portion of the valve member 22. The support member 23 in the embodiment shown in FIGS.
A pair of supports 23, 23 is fixed to the outer surface of the box 2 so as to sandwich the opening 21 of the decompression box 2, and a valve body 22 made of soft rubber is stretched over the supports 23, 23. The open port 21 is covered at the substantially central portion of the valve 22, and the lower surface of the valve body 22, the pair of support bodies 22 and 22, and the decompression box 2 are provided.
It is configured such that the gap between the outer surface and the outer surface serves as a communication portion for the atmosphere.

At this time, the height dimension of the support 23 and the support 23
The distance from the edge of 21 may be set in consideration of the magnitude of the suction force of the suction means 9 and the magnitude of the elastic force of the valve body 22.

The reference numeral 24 is a nursery box containing the soil 25, and the nursery box 24
Are configured so that they can be sequentially moved closer to the side of the seeding device 1 by a carrying device 26 such as a roller conveyor and can be carried away.

With this configuration, when the pressure reducing box 2 is put on the upper surface of the seed box 5 containing the predetermined seed A and the switch 16 or 17 is turned on, the drive motor 19 in the suction means 9 is operated to remove the air in the pressure reducing box 2. . At this time, the elastic film-shaped valve body 22 in the decompression releasing device 20 is pulled toward the opening 21 and the opening 21
When the degree of vacuum inside the decompression box 2 increases, the lower surface plate 3 of the decompression box 2 and the upper surface of the seed box 5 come into close contact with each other, and the degree of vacuum inside the recess 6 in the seed box 5 also increases. The height of the seeds A increases, and one grain of the seed A in each recess 6 is attracted to the suction port 4 of the lower surface plate 3.

Then, while the seeds A are adsorbed to the adsorption ports 4 of the lower surface plate 3 of the decompression box 2, the decompression box is transferred to the seedling raising box 24, and the switch 16 or 17 is turned off there, so that the inside of the decompression box 2 is changed. When the degree of vacuum is weakened, the valve body 22 automatically returns to a flat shape due to its own elastic force, the atmosphere enters the decompression box 2 through the opening 21, and the pressure inside the decompression box 2 becomes large at once. Since the pressure is the same as the atmospheric pressure, the seeds A adsorbed to the adsorption ports 4 of the bottom plate 3 fall on the soil 25 of the seedling raising box 24, and each child A corresponds to the adsorption port 4 location. It is possible to sow at a predetermined interval.

When the amount of the seed A stored in the seed box 5 is reduced by repeating this seeding work and the seed A cannot be sucked up to the suction port 4 by the suction force of the decompression box 2,
When the seed box 5 is integrally rotated together with the decompression box 2 by operating the handle 12 in order to incline the seed box 5 and the decompression box 2 at an appropriate angle such as making them substantially vertical, etc. (two-dot chain line in FIG. 2). , Or the upper part of FIG. 5), the seed A in the recess 6 rolls and approaches the suction port 4, and the seed A is surely sucked into the suction port 4.

In this way, it is not necessary to frequently perform the supplementary work of adding seeds every time the seeds A in the recess 6 are consumed, and the work efficiency can be improved.

In addition, since the seed A generally has a convex curved surface like a sphere or an ellipsoid and the size thereof varies, when the seed A is adsorbed at each adsorption port 4 in the lower plate 3, the lower end opening When the opening 4a is opened downward (conical), the seed A has a wider adsorption surface compared to the lower surface of the protrusion protruding downward like the adsorption port in the prior art. It is possible to suck in, and it is possible to suck more reliably.

[Brief description of drawings]

The drawing shows an embodiment of the present invention. Fig. 1 is a schematic plan view of a seeding device, Fig. 2 is a side view taken along line II-II of Fig. 1, and Fig. 3 is a side view taken along line III-III of Fig. 2. Fig. 4 is an enlarged sectional view of an essential part of the lower plate and the recess of the seed box in Fig. 3, Fig. 5 is an enlarged sectional view of an essential part in Fig. 2, and Fig. 6 is VI- in Fig. 5. FIG. 6 is a plan view seen from VI. 1 ... Seeding device, 2 ... Decompression box, 3 ... Bottom plate, 4 ...
Adsorption port, 4a ... Lower end opening, 5 ... Seed box, 6 ... Recess, A ... Seed, 7 ... Base, 8 ... Machine frame, 9 ... Suction means, 19 ... Drive motor , 10 …… arm, 11 …… rotating shaft, 12 …… handle, 13 …… contact body, 15 …… intake pipe, 1
6,17 …… Switch, 18 …… Grip, 20 …… Decompression release device,
21 …… Open mouth, 22 …… Valve, 23 …… Support, 24 …… Nursing box.

Claims (1)

(57) [Scope of utility model registration request] 1. A seed box in which a plurality of seed suction ports are opened on a lower surface plate of a decompression box communicating with a suction means, and a recess for seed storage is provided at a position corresponding to each suction port. In a sowing apparatus configured to detachably mount a box, the seed box on which the decompression box is mounted can be changed to an integrally inclined posture and a substantially horizontal posture. When the lower plate of the decompression box and the upper surface of the seed box are intimately contacted with each other, the suction ports are biased toward the lower side of the seed box with respect to the center of each recess. A seeding device, characterized in that it is configured to open when opened.