JPH0773448B2 - Fukizero seeding method and its equipment - Google Patents

Description

Detailed Description of the Invention [Industrial applications]

TECHNICAL FIELD The present invention relates to a blow-zero seeding method and apparatus for sowing seeds stored in a storage body by adsorbing the seeds to an outer peripheral surface of a rotary seeding drum and transporting the seeds to blow them at a required position.

[Prior art]

As such a blow-zero seeding method and apparatus thereof, for example, the one described in Japanese Patent Application Laid-Open No. 2-35005 is known, but it is fixed in the rotary seeding drum to a suction chamber and a blowing chamber. When the seed adsorbed on the outer peripheral surface of the rotary seeding drum in a position corresponding to the suction chamber is located in the blowout chamber by the rotation of the rotary seeding drum, the seed is placed in the blowout chamber. The seeds are blown and blown by blowing air from a pipe.

[Problems to be Solved by the Invention]

In this known seeding method and its apparatus, the partition between the suction chamber and the blowout chamber is performed by a plurality of rollers that are in pressure contact with each other on the inner peripheral surface of the rotary seeding drum and are also in pressure contact with each other. Not only does it have the disadvantage of complicating the device, but it also tends to cause incomplete blockage of the compartments and interferes with the suction or blowing action of each chamber. There is a drawback that the seeds adsorbed on the seeds cannot be sown by smoothly blowing them. An object of the present invention is to eliminate such drawbacks, and to prevent seed film adsorption of seeds adsorbed on the outer peripheral surface of the rotary seeding drum from coating film pieces of coating seeds or seeds having a small particle size without clogging. A method and apparatus therefor.

[Means for Solving the Problems]

The structure of the present invention adopted to achieve the above object will be described below with reference to the examples. In the blow-zero seeding method of the present invention, the seed s is sucked and held in the seed suction hole 6 having the outer end opened on the outer peripheral surface of the drum a by the suction action of the rotary seeding drum a, and the seed s is conveyed at the seeding position. When it reaches, the inner end of the suction hole 5 which is opened in the drum a and communicates with the seed adsorption hole 6 is closed by the closing roller 12, and at the same time, the seed adsorption hole 6 and the suction hole 6 5
The air blown from the outside introduced into the communication hole 3 which is continuous with is sent to the seed adsorption hole, and the seed s adsorbed in the seed adsorption hole 6 is blown to zero and seeded. In the blow-zero seeding device of the present invention, a plurality of seed adsorption holes 6 whose outer ends are opened on the outer peripheral surface of the rotary seeding drum a are connected to the suction holes 5 and communication holes 3 whose inner ends are opened inside the drum a. Continuous, the closing roller 12 is provided to close the inner end of the suction hole 5 at the seeding position, and the ventilation pipe 11 for blowing air from the outside is attached to the communication hole 3 at the seeding position. That is the content.

[Action]

According to the present invention, the seed is adsorbed to the seed adsorption hole of the rotary seeding drum, and when the seed reaches the seeding position in the state as it is, the suction hole is closed by the closing roller and suctioned to the corresponding seed adsorption hole. Since the force disappears and at the same time, the air is blown to the seed adsorption hole through the communication hole, the seed adsorbed there is forcibly blown out and sown.

【Example】

Hereinafter, examples of the present invention in which each pot of a known seedling raising device is sowed will be described in detail. a is a rotary seeding drum rotatably supported on a machine frame b, c
Is a seedling raising device mounted on a conveyor d erected on the machine frame b, and the rotary seeding drum a sucks and conveys the seeds stored in a storage device e that is erected to the rotary seeding drum a to the outer peripheral surface thereof, Seed by spraying into each pot in c. 1 is the suction cylinder of the rotary seeding drum a, 2 and 2'is side plates fitted into the openings of both sides of the suction cylinder 1, 3 ... is the required spacing in the circumferential direction within the thickness of the suction cylinder 1. And a communication hole located parallel to the central axis of the suction cylinder 1,
... has its one end opening closed by the side plate 2, but has the other end opening opened to the outer surface of the side plate 2'through the through hole 4 of the side plate 2 '. Reference numeral 5 indicates a suction hole that connects each communication hole 3 to the inside of the suction cylinder 1, and 6 indicates a seed adsorption hole that is continuous with each communication hole 3 and is opened on the outer peripheral surface of the suction cylinder 1. These suction holes 5 and seed adsorption holes 6 face each other 1: 1 via the communication holes 3. Reference numeral 7 denotes a tube shaft penetrating the rotary seeding drum a, which allows the rotary seeding drum a to rotate freely around the tube shaft 7 via a required bearing, and the tube shaft 7 is located inside the suction body 1. A plurality of suction ports 7'are opened in the portion to be formed, and both ends of the side plates 2, 2'protruding outwardly are erected on the machine frame b above the bearing pieces 8, 8 '.
The suction pipe 9 of, for example, a vacuum suction device (not shown) is connected to the open end, which is one side end supported by the bearing piece 8 and the other side end supported by the bearing piece 8'is connected. It is blind. Reference numeral 10 is a backing plate that abuts against the outer surface of the side plate 2'without hindering the above rotation of the rotary seeding drum a, and is supported by necessary means so as not to rotate itself. All the outer surfaces of the through holes 4 except the one that has reached the seeding position described later are closed. In other words, the backing plate 10 has a blower pipe 11 of a blower (not shown) connected to the lower peripheral portion thereof, and the through hole 4 at the seeding position described later is aligned with the tip opening of the blower pipe 11, The blower pipe 11 and the communication hole 3 at the same seeding position are made to communicate with each other, but the communication holes 3 at positions other than this seeding position are not made to communicate with the outside through the side plate 2'side opening. is there. 12 ... is the suction hole 5 so that the inner end opening of the suction hole 5 of the communication hole 3 reaching the seeding position is closed in the suction cylinder 1.
Rubber blocking rollers, 1: 1 facing each other, 13
...... is a roller bracket that rotatably supports the closing rollers 12 and 12 around the shaft 14 on both lower end surfaces, and 15 is a horizontal shaft installed between the support brackets 16 and 16 fitted to the pipe shaft 7. The roller brackets 13 above are rotatably supported on 15. 17 ... is a spring stretched between a spring bracket 18 laterally provided on the pipe shaft 7 and each roller bracket 13 ... By this, each closing roller 12 ... is pressed against the inner surface of the suction cylinder 1, The inner end opening of each suction hole 5 of the communication hole 3 at the seeding position can always be reliably closed. Now, by driving the motor 19 on the machine frame b, the rotary seeding drum a having the above-described structure is rotated in the direction of arrow 20 and the conveyor d is moved in the direction of arrow 21 to drive the seedling raising device c through the required interlocking mechanism. And the suction device and the air blower (not shown) are driven to suck the inside of the suction cylinder 1 through the suction pipe 9 and blow the air directly to the communication hole 3 at the seeding position through the air blow pipe 11. As a result, the seeds s stored in the reservoir e are adsorbed to the rotary seeding drum a, more specifically, to the seed adsorbing holes 6 of the suction cylinder 1 ... When it is conveyed toward the circumferential position and reaches the seeding position, the suction hole 5 of the communication hole 3 closes the closing roller.
Blocked by 12, the suction force to the seed adsorption hole 6 disappears, and at the same time, the communication hole 3 communicates with the blower pipe 11 and blows air to the seed adsorption hole 6, so that the seed s adsorbed there is forced. The seeds are sprayed to each pot 22 and seeded in each pot 22 of the seedling raising device c. In the above, the whole of the inside of the suction cylinder 1 of the rotary seeding drum a is configured to act as a suction chamber, and there is no factor that impairs the suction action on the various child suction holes 6 in the configuration, so the rotary seeding is performed. Adsorption and conveyance of seeds by the outer peripheral surface of the drum a are reliably performed. Further, since the air is blown to the various child adsorption holes 6 through the communication holes 3 each time the seeding position is reached, the seeds adsorbed in the various child adsorption holes 6 are precisely blown off, and the coated seeds are also provided. It does not clog the coating film pieces or seeds having a small particle size.

EFFECTS OF THE INVENTION As is apparent from the above detailed description, according to the present invention, the seeds sucked and held by the seed adsorption holes on the outer peripheral surface of the rotary seeding drum and conveyed to the seeding position are sucked to reach the seeding position. The inner end of the hole is closed by a closing roller, and at the same time, by blowing air to the seed adsorption hole through the communication hole, the seeds are blown to zero so that the seeds are disclosed in JP-A-2-35005. , The rotary seeding drum is fixedly divided into a suction chamber and a blowing chamber, and when the seed adsorbed on the outer peripheral surface of the rotary seeding drum is positioned corresponding to the blowing chamber, the air blown inside the blowing chamber Unlike blowing and sowing by blowing air from a pipe, adsorption of seeds to the outer peripheral surface of the rotary seeding drum and sowing and sowing of seeds can be carried out easily, surely and smoothly. In addition, since the blowing air for blown air is directly applied to the seed adsorption holes from the outside of the rotary seeding drum, coating film pieces of coated seeds or seeds having a small particle size may be clogged in the seed adsorption holes. Effectively prevented.

[Brief description of drawings]

The drawings show an embodiment of the present invention, FIG. 1 is a side view, and FIGS. 2 and 3 are vertical cross-sectional views of an essential part. a: rotary seeding drum, s ... seed, 3 ... communication hole, 5
…… Suction hole, 6 …… Seed adsorption hole, 11 …… Blower tube, 12 ……
Blocking roller.

Claims (2)

[Claims] 1. A seed is sucked and held in a seed suction hole having an outer end opened to the outer peripheral surface of the drum by a suction action of a rotary seeding drum and is conveyed, and when it reaches a seeding position, inside the drum. The inner end of the suction hole which is opened to and is communicated with the seed adsorption hole is closed with a closing roller, and at the same time, the seed adsorption hole and the suction hole are introduced into the continuous communication hole from the outside. Is blown to the seed adsorption holes to blow and sow the seeds adsorbed in the seed adsorption holes. 2. A plurality of seed adsorption holes, the outer ends of which are opened on the outer peripheral surface of a rotary seeding drum, are continuous with suction holes, the inner ends of which are opened, in the drum through communication holes, and a sowing position. 2. A blow-zero seeding device comprising: a closing roller that closes the inner end of the suction hole; and a blowing pipe that blows air from the outside attached to the communication hole at the seeding position.