JPH0239808A - Suction type sowing device - Google Patents

Abstract

PURPOSE:To perform the sucking and blowing-off of seeds completely to enable the precise sowing of the seeds by forming a sucking chamber and blowing-off chamber so as to always bring front and rear rubber rolls into contact with both a central shaft cylinder and a sowing roll. CONSTITUTION:A freely rotatable central shaft cylinder 18 having a small diameter is disposed in a sowing roll 6 and front and rear freely rotatable rubber rolls 20 and 24 are also disposed at an interval between the central shaft cylinder 18 and the sowing roll 6. The front and tear rubber rolls 20 and 24 always contact with both the central shaft cylinder and the sowing roll 6 to form a suction chamber 16 and a blowing-off chamber 17. The suction chamber 16 and the blowing-off chamber 17 are formed in a closed state to completely perform the suction and blowing-off of the seeds, thereby permitting to carry out the precise sowing of the seeds.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a suction type seeding device.

(Prior art) The conventionally known Japanese Utility Model Application Publication No. 58-100514 discloses a method of supplying seeds to the outer periphery of a horizontally rotating seeding roll on the rising side of rotation, in which seed suction holes are arranged in parallel at predetermined intervals on the circumferential surface. A seed falling part is provided at the lower outer peripheral part of the seeding roll,
The inside of the sowing roll has a suction chamber for adsorbing seeds from the seed supply section and a blowing chamber for blowing out the adsorbed seeds, and a square-shaped plate member whose position is fixed is provided in the rotating sowing roll. , a suction type seeding device is described in which the space inside the seeding roll is partitioned into a suction chamber and a blowing chamber by the plate member.

(Problems to be Solved by the Invention) The above-mentioned known device has a structure in which a plate member is provided inside the rotating seeding roll and partitioned into a suction chamber and a blowing chamber by the plate member. If the sowing roll is brought into close contact with the inner surface of the sowing roll, the sowing roll will not rotate due to resistance.
A slight gap is formed between the tip of the slope member and the inner surface of the seeding roll. Therefore, there is a problem that both suction and blowing are not perfect.

Therefore, the present application solves the above problem.

(Means for Solving the Problems) Accordingly, the present invention provides seed suction holes 8 arranged in parallel on the circumferential surface at predetermined intervals, and a seed supply section on the outer periphery of the horizontally rotating sowing roll 6 on the upward rotation side. 13 and a seed falling section 14 is provided on the lower outer periphery of the sowing roll 6, and inside the sowing roll 6 is a suction chamber 16 that adsorbs the seeds from the seed supply section 13 and a blowing chamber 17 that blows out the adsorbed seeds. In the suction type seeding device, a rotatable small-diameter central shaft cylinder 18 is provided at the center of the seeding roll 6, and a rotatable front rubber roll 20 is provided between the central shaft cylinder 18 and the seeding roll 6. A suction type seeding method in which a rear rubber roll 24 is provided at a distance, and the front and rear rubber rolls 20.24 are always in contact with both the central shaft cylinder 18 and the seeding roll 6 to form a suction chamber 16 and a blowing chamber 17. This is a device.

(Embodiment) An embodiment of the present invention will be described with reference to the drawings. 1 is a supply hopper of a seeding device, 2 is a vertical plate of the supply hopper 1, and 3 is a bottom plate, and the lower end of the vertical plate 2 and the bottom plate 3 are connected to each other. 65, which forms the seed supply port 4 between the upper surface and the top surface, is the size of the seed supply port 4? This is the supply port adjustment plate with J4 section.

A sowing roll 6 rotating on a horizontal axis is provided diagonally below the seed supply port 4. The roll part 7 of the seeding roll 6 is formed into a cylindrical body by resin and resin, and has one seed adsorption hole 8 on its circumferential surface.
The zero-seed adsorption holes 8 are formed in accordance with the outer diameter of the coated seeds prepared by coating the surface of ultrafine seeds such as Chinese cabbage, and are arranged in a predetermined direction in the generatrix direction and circumferential direction of the roll portion 7. formed at intervals. iij
The seed suction hole 8 is formed in a perfect circular shape when viewed from the -L direction, and its cross-sectional shape forms an inclined surface 9 whose diameter gradually becomes smaller toward the center of the seeding roll 6. A seed fitting part 10 having the same diameter from start to finish is formed on the back side of the inclined surface 9, and a communication port 11 communicating with the inside of the roll part 7 is formed on the back side of the seed fitting part 10. The communication port 11 is for sucking seeds into the seed fitting part 10 of the seed suction hole 8,
The inner diameter of the communication port 11 is formed to be smaller than the seed fitting portion 10 so that the seeds do not pass therethrough.

A mounting plate 12 is attached to the tip of the bottom plate 3, and the tip of the mounting plate l is placed close to the outer circumferential surface of the roll portion 7.
and the outer peripheral surface of the roll portion 7 form a seed supply portion 13.

A seed falling part 14 is formed below the sowing roll 6, and the seeds fit into the seed suction holes 8 in the seed supply part 13 and rotate together with the roll part 7 to the seed falling part 14, and the seeds are rotated together with the roll part 7 until the seeds fall into the seed dropping part 14. 14, the suction is released and the boat falls downward and passes below the seeding roll 6! Configure to sow within 5 minutes.

Therefore, in the seeding roll 6, there is a suction chamber 16 for sucking the seeds into the seed suction hole 8 through the communication port 11 of the seed suction hole 8, and a suction chamber 16 for sucking the seeds into the seed suction hole 8 through the communication port 11 of the seed suction hole 8, and a suction chamber 16 for releasing the suction at the seed dropping section 14 to allow the seeds to fall. A blowing chamber 17 is formed for the purpose.

At the center of the sowing roll 6, a horizontal central cylinder 18 is provided, and below the central cylinder 18, a front rubber roll is provided which is in close contact with the outer peripheral surface of the central cylinder 18. The outer peripheral surface of the front rubber roll is brought into close contact with the inner peripheral surface 21 of the roll portion 7. A rear rubber roll 24 is provided on the side of the central barrel 18 in close contact with the outer peripheral surface of the central barrel 18, and the outer peripheral surface of the rear rubber roll 24 is brought into close contact with the inner peripheral surface 21 of the roll portion 7.

The blowing chamber 17 is provided with 19 parts, η parts, n parts, and 6 parts in close contact between the central cylinder 18, the front rubber roll, the rear rubber roll 24, and the inner circumferential surface 21 of the roll part 7. From the seed falling section 14 in the roll 6 to the seed supply section 13
It is formed by an enclosed space on the rotationally rising side of the roll portion 7 that reaches .

Further, the suction chamber 16 is formed by a contact 19 part, a contact η part, a contact 23 part, and a contact 25 part between the central shaft cylinder 18, the front rubber roll 24, the rear rubber roll 24, and the inner peripheral surface 21 of the roll part 7. , so that it is formed by a space other than the blowing chamber 17 surrounded by the downward rotation side of the roll part 7 from the seed supply part 13 to the seed drop part 14 in the sowing roll 6.

The central shaft tube 18 is formed of a metal cylinder, and flanges 26 are fixed to both left and right sides of the center sleeve tube 18, and both ends of a fixed shaft H in the left and right direction are pivoted to the flanges 26. do. One end of the fixed shaft H is fixed to the center of a vertical fixed mounting plate 4 provided in the seeding roll 6, and the other end protrudes from a fixed mounting plate provided inside the end surface of the roll portion 7 of the seeding roll 6. Then, attach it to the side plate (9) of the seeding device.

The central axis 31 of the front rubber roll is connected to the immovable mounting plate 2.
8 and the long hole formed on the Fudo Attachment Print, with Bush 33 on the support.
．． 33, it is pivoted so that it can move freely in the direction of the Northern Army.

Similarly, it is pivoted to the central axis of the rear rubber roll 24 or to the elongated holes 35 formed in the immovable mounting plate 4 and the immovable mounting plate 3 through bushings so as to be movable in the downward direction of the front and rear hills.

Sum is a positioning roller, in which a plurality of rubber rollers 42 that contact the inner circumferential surface 21 of the roll part 7 are fixed to a rotating shaft 41 at predetermined intervals, and both ends of the rotating shaft 41 are fixed to the fixed mounting plate. It is pivotally attached to the fourth and immovable mounting plate via eccentric cams 43 and 43.

That is, the positioning roller 4 is moved by the eccentric cam 43.43.
When the position of 0 is changed, the immovable mounting plates 4 and 4 are moved to the roll part 7.
The front rubber roll and the rear rubber roll 24 are moved against each other.
The central axes 31 of the rollers move in the long holes π, and the front rubber roll, the rear rubber roll 24, and the positioning rollers are in close contact with the inner circumferential surface 21 of the roll portion 7, and the suction chamber is 16 and a blowing chamber 17 are formed.

In the seeding roll 6, the roll part 7 is supported by the front rubber roll, the rear rubber roll 24, and the positioning roller 40, and only the roll part 7 rotates, and the front rubber roll, the rear rubber roll 24, and the positioning roller 40 are supported by the front rubber roll, the rear rubber roll 24, and the positioning roller 40. It rotates at each position by the rotation of the roll part 7 without changing the positional relationship with respect to the roll part 7.

A rotary mounting plate 44 is fixed to the end face of the roll part 7 on the side of the immovable mounting plate n with screws 45, and a drive shaft part is fixed to the center of the two-rotation mounting plate 44, and the drive shaft part is attached to the side plate of the seeding device. 4
7, and teeth 11j 48 are fixed to the drive shaft portion.

Therefore, the seeding roll 6 is mounted on the side plate I and the side plate 47 of the seeding device by a drive shaft 46 and a fixed shaft n.

49 is a suction port of the suction chamber 16, and is connected to a suction device. Reference numeral 50 denotes an air blowing nozzle; the air blowing nozzle 50 is installed horizontally in the blowing chamber 17, its tip is formed close to the inner circumferential surface 21 of the roll part 7, and its base is connected to the blowing outlet 51. .

Below the seed dropping section 14, there is provided a moving device 8 for a seedling box dryer into which the bot 15 is fitted.

A guiding case 52 for guiding seeds falling from the seed dropping part 14 is provided between the seed dropping part 14 and the seedling box wing.

Inside the guiding case 52, a first scraping brush 53 and a second scraping brush 54 are provided which fit into the seed suction hole 8 and scrape off seeds that do not fall. The first scraping brush 8 is provided between the front rubber roll whose suction action is completed by the suction chamber 16 and the inner circumferential surface 21 of the roll portion 7, which is in close contact η, and the air outlet 61 of the air blowing nozzle. The second scraping brush 8 has an air outlet 61
Installed on the higher rotation side.

Thus, the mounting plate 1 forming the seed supply section 13
A leakage brush I is provided on the lower surface of the tip edge of No. 2. The leakage brush 55 prevents seeds from leaking from the seed supply section 13 and retains the seeds in the seed supply section 13.

In the seed supply section 13 on the upward rotation side of the leakage brush 55, a first agitation brush shell and a second agitation brush 57 are provided at intervals in the rotational direction of the seeding roll.

1st W1. Both the stirring brush group and the second stirring brush 57 are
Seeds that do not fit into the inclined surface 9 of the seed suction hole 8 due to the bridging phenomenon are scraped out.

Seeding roll 6 on the rotation upward side from the second stirring brush 57
A rotating brush space is provided above the seed suction hole 8 to return excess seeds not fitted into the seed suction hole 8 to the seed supply section 13 side.

The tips of the first and second agitating brushes 57 face the seed adsorption holes 8, and the brush mounting plate temperature and bristle value are maintained between the gaps that are approximately the same as the spacing between the seed adsorption holes 8. It is formed by sparsely planted. That is, when the second agitating brush 57 scrapes out seeds due to the bridging phenomenon of the seed adsorption hole 8 that occurs rarely, other seeds may fit into the seed adsorption hole 8 between the second Wl agitation brush 57 and the rotating brush 8. Therefore, in order to make the seeds exist around the second stirring brush 57, a gap is formed between the bristles and the craftsman to allow the seeds to pass through, and the second stirring brush 57 is rotated together with the rotating seeding roll 6.

In addition, if the number of seeds on the mounting plate that rotates together with the rotating seeding roll 6 decreases, other seeds will not fit into the seed suction holes 8 after being scraped out by the first stirring brush 56, so the rotating brush The structure is such that the seeds swept back by the pitcher pass through the gap and return onto the mounting plate 12, and the seeds always move between the gaps in the hair in the direction of arrow A, and the seed suction hole 8 allows the seeds to pass through the gap and return to the mounting plate 12 for a long distance. Rotating in the state in which the seed is present increases the time for the seed to fit, ensuring that the seed fits securely.

Reference numeral 59 denotes a seal attached to the periphery of the immovable mounting plate n, and is provided on the side of the blowing chamber 17. In addition, the immovable mounting plate n
A seal mark is provided on the end face of the side roll portion 7 over the entire circumference.

(effect) Next, we will discuss the effect.

The present invention has the above-mentioned configuration, and an immovable mounting board that does not rotate and an immovable mounting plate n are provided on both left and right sides of the sowing roll 6, and the center is centered at the center of each of the immovable mounting board and the immovable mounting board. A fixed shaft 27 of the central cylinder 18 is fixed, and a front rubber roll 20 and a rear rubber roll 24 that are in close contact with the outer peripheral surface of the central cylinder 18 are provided below and on the sides of the central cylinder 18. The seed falling portion 14 in the sowing roll 6 is formed by the front rubber roll, the rear rubber roll 24, and the inner circumferential surface 21 of the roll portion 7.
A blowing chamber 17 is formed as an enclosed space outside the rotation of the keel part 7 extending from the keel part 7 to the seed supply part 13. By the close contact 19 part, the close contact n part, the close contact n part, and the close contact 3 part, the area other than the blowing chamber 17 surrounded by the downward rotation side of the roll part 7 from the seed supply part 13 to the seed falling part 14 in the sowing roll 6 A suction chamber 16 is formed by the space of
Since the seed adsorption hole 8 having the communication port 11 communicating therein is formed, when seeds are supplied into the supply hopper 1,
The seeds are supplied from the seed supply port 4 of the supply hopper 1 to the seed supply section 1.
3, the roll part 70 of the seeding roll 6 rotating in the seed supply part 13 is sucked into the seed suction hole 8 and fitted.

Therefore, the alE brush 55 on the lower surface of the tip edge of the mounting plate η
A seed supply section 13 is formed by the outer surface of the sowing roll 6, and a first stirring brush space and a second stirring brush space are provided in the seed supply section 13.
Since the stirring brushes 57 are arranged in two rows, even if there are seeds that do not fit on the inclined surface 9 of the seed suction hole 8 due to the bridging phenomenon, they can be removed between the first stirring brush field and the second stirring brush field. 57 to ensure that the seeds are scraped out, and the seed suction holes 8 suck in other seeds.

In addition, both the first stirring brush group and the second stirring brush 57 are formed by sparsely planting the bristles 6 on the brush mounting plate with gaps approximately the same as the spacing between the seed suction holes 8. ,
The seeds that have rotated together with the rotating seeding roll 6 pass through the gap marks and reach the vicinity of the second stirring brush 57, and the seeds that have been swept back by the rotating brush 8 pass through the gap and reach the mounting plate 1.
Returning to the second side, the seeds are evenly distributed in the seed supply section 13. Therefore, the 119th! Stirring brush group and 1N2ff
When the seeds of the blistering phenomenon are scraped out by the stirring brush 57,
Other seeds can be sucked into the seed suction hole 8 immediately. That is, the seeds always move between the gaps between the bristles 65 as shown by arrow A, and the seed suction hole 8 rotates for a long distance with the seeds present, which increases the time it takes for the seeds to fit together and ensures that they fit securely. let

Thus, the seeds suction-fitted into the seed suction holes 8 reach the seed falling section 14 due to the rotation of the roll section 7.

When the seed suction hole 8 passes through the part of the seed falling part 14 that is in close contact with the inner circumferential surface 21 of the front rubber roll and the roll 7, the suction from the communication port 11 of the seed suction hole 8 is released and the air outlet 17, the air is pushed out by the positive pressure of the air outlet 17, and is then blown out by the strong air from the air outlet 61 of the air blowing nozzle group. Since the seeds are rubbed by the first scraping brush before being exposed to the blowing air, even the seeds that are tightly fitted are weakened to some extent, so that the seeds are blown out by the blowing air and are swept away inside the seed falling part 14. to fall.

A moving device MO between the seedling boxes into which the pot 15 is fitted is provided below the seed dropping section 14.
Since a guide case 52 is provided between the seedling box 4 and the seedling raising box holder for guiding the seeds falling from the seed drop section 14, the seeds falling from the seed suction hole 8 are guided to the guide case 52. One to three seeds are dot-sown in each pot 15 fitted in a seedling box passing below the seed drop section 14 without scattering.

Further, since there is a second scraping brush, seeds that are not scraped out by the first scraping brush 8 are completely scraped out.

Therefore, the suction chamber 16 and the blowing chamber 17 are formed so that the front and rear rubber rollers 24 are always in contact with both the central shaft cylinder and the seeding roll 6, so that the suction chamber 16 and the blowing chamber 17 is formed in a sealed state, and suction and blowing from each suction chamber 16 and blowing chamber 17 is performed satisfactorily.

(Effects) In the present invention, a seed supply unit 13 is installed on the outer periphery of the horizontally rotating sowing roll 6, which has seed suction holes 8 arranged side by side at predetermined intervals on the circumferential surface of the sowing roll 6. A suction-type seeding device is provided with a seed dropping section 14 on the lower outer periphery, and a suction chamber 16 for adsorbing seeds from the seed supply section 13 and a blowing chamber 17 for blowing out the adsorbed seeds inside the sowing roll 6. In the apparatus, a rotatable small-diameter center cylinder 18 is provided at the center of the seeding roll 6, and a rotatable front rubber roll 20 and a rear rubber roll 24 are spaced between the central sleeve cylinder 18 and the seeding roll 6. The front and rear rubber rolls 20, 24 are always in contact with both the central cylinder 18 and the seeding roll 6, and the suction chamber 16 and the blowing chamber 17 are
Since this is a suction-type seeding device formed with Therefore, the suction chamber 16 and the blowing chamber 17 can be formed in a sealed state, and the effect is that suction and blowing can be performed completely and precision seeding can be performed.

[Brief explanation of the drawing]

Figure 1 is a vertical side view of the entire device, Figure 2 is a vertical front view,
FIG. 3 is a perspective view of the scraping brush, and FIG. 4 is a perspective view of the main parts. Explanation of symbols 1... Supply hopper, 2... Vertical plate, 3... Bottom plate,
4... Seed supply port, 5... Supply port cylinder plate, 6...
Seeding roll, 7...roll part, 8...seed adsorption hole,
9... Inclined surface, 10... Seed fitting part, 11... Communication port, T... Mounting plate, 13... Seed supply part, 14...
... Seed falling part, 15... Pot, 16... Suction chamber, 17... Blowing chamber, 18... Center shaft cylinder, 19...
- Close contact, (capital)...Front rubber roll, 21...Inner peripheral surface, 22...V: Wear, 23... Close contact, 24... Rear rubber roll, δ... Close contact, 3...・Flange, U...
Fixed shaft, redundant, 3...immovable mounting plate, 30...side plate, 3
! ...Central axis, 32...long hole, elongation...butsu,
34... Central shaft, 5... Long hole, 40... Positioning roller, 41... Rotating shaft, 42... Rubber roller 4
3...-Eccentric cam, 44... Rotating mounting plate, 45...
Screw, 46... Drive shaft, 47... Side plate, 48...
Gear, 49... Suction port (capital)... Air blowing nozzle,
51...Air outlet, 52...Induction case, 53...
- 1st L% extraction brush, 54... 2nd scraping brush, audience... leakage brush, section... 1st W1. stirring brush, 57
...Second [stirring brush, Guo...rotating brush, 59, (
capital)... Seal, 61... Air outlet, Description... Seedling box, B... Transfer device, Same... Mounting plate, 65... Hair,
Country... gap.

Claims (1)

[Claims] A seed supply section 13 is provided on the outer periphery of the horizontally rotating sowing roll 6 on the upward rotation side, and a seed dropping section is provided on the lower outer periphery of the sowing roll 6, which has seed suction holes 8 arranged side by side at predetermined intervals on the circumferential surface. 1
4, and the inside of the sowing roll 6 has a suction chamber 16 for adsorbing seeds from the seed supply section 13 and a blowing chamber 17 for blowing out the adsorbed seeds. A rotatable small-diameter central shaft cylinder 18 is provided at the center of the center, and a freely rotatable front rubber roll 20 and a rear rubber roll 24 are provided at intervals between the central shaft cylinder 18 and the seeding roll 6, and the front and rear rubber rolls 20 ,2
Reference numeral 4 denotes a suction type seeding device in which a suction chamber 16 and a blowing chamber 17 are formed so as to be in constant contact with both the central shaft tube 18 and the seeding roll 6.