JPH10262421A - Oscillating seed hopper for vacuum adsorption type sower - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an oscillating seed hopper with which even fine particular seeds can be surely adsorbed and all the seeds can be sown without waste by forming an air curtain for guiding seeds to a position just under the top end of adsorption nozzle inside this hopper. SOLUTION: Inside an oscillating seed hopper 23, plural air jet nozzles 36 are formed and air is jetted out of respective air jet nozzles 36 so that an air curtain (a) can be formed for guiding seeds to the position just under the top end of adsorption nozzle 15a. In this case, it is preferable that the plural air jet nozzles 36 are arranged at intervals in the axial line direction of hopper turning shaft 34 inside the oscillating seed hopper 23 and air is jetted out of respective air jet nozzles 36 toward both the sides of top end part of adsorption nozzle 15a on the inner surface of base end part to become the bottom part of oscillating seed hopper 23 in the attitude of seed adsorption.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a swing type seed hopper in a vacuum adsorption type sowing apparatus for sowing seedling pots mounted on a tray to be conveyed.

[0002]

2. Description of the Related Art Conventionally, as one form of a vacuum suction type sowing apparatus, there is a type equipped with a swing type seed hopper. The vacuum suction type sowing apparatus is provided with a swinging hopper rotating shaft having a suction nozzle insertion hole. The base end of the mold-type seed hopper is attached swingably up and down, and the swinging-type seed hopper is set so that the tip end is located above the base end, and the tip end is higher than the base end. It is possible to freely change to the seed non-sucking posture located below and seeds staying at the base end in the swinging seed hopper in the seed sucking posture, while inserting the suction nozzle into the suction nozzle insertion hole, The above-mentioned seeds are released and seeded in a seedling pot placed on a tray that is conveyed by vacuum suction at the tip of the suction nozzle.

[0003]

However, fine seeds such as seeds of Bekoniya or Eustoma have a problem that if the number is small, the efficiency of adsorption by the adsorption nozzle will be poor. Although it is conceivable that the seeds are stored in a hopper, such seeds are expensive, so that there is a problem that the cost is increased accordingly.

[0004]

Therefore, according to the present invention, a base end of a swing type seed hopper is attached to a hopper rotating shaft having a suction nozzle insertion hole so as to be swingable up and down. The hopper can be freely changed between a seed suction position in which the tip is located above the base end and a seed non-sucking position in which the tip is located below the base end, and has a seed suction position. The seed staying at the base end in the swinging seed hopper is inserted into the suction nozzle insertion hole, and vacuum-adsorbed to the tip of the suction nozzle, and is placed on the tray to be conveyed. In the oscillating seed hopper of the vacuum adsorption type sowing apparatus that releases and seeds the above seeds in the seedling raising pot, a plurality of air ejection nozzles are disposed in the oscillating seed hopper, and air is ejected from each air ejection nozzle. From the suction nozzle. Square there is provided cents oscillating seed hopper vacuum adsorption type sowing device being characterized in that to enable an air curtain for inducing seed position.

Further, according to the present invention, a plurality of air ejection nozzles are arranged in an oscillating type seed hopper at intervals in an axial direction of a hopper rotation shaft, and air is discharged from each air ejection nozzle.
It is also characterized in that the seeds are ejected toward the inner surface of the base end serving as the bottom of the swinging seed hopper and to both sides of the tip of the suction nozzle in the seed suction posture.

[0006]

Embodiments of the present invention will be described below.

That is, the vacuum suction type seeding apparatus equipped with the swing type seed hopper according to the present invention has a basic structure in which the base end of the swing type seed hopper is attached to a hopper rotation shaft having a suction nozzle insertion hole. The seed hopper is mounted so that it can swing up and down, and the swinging-type seed hopper can be moved up and down so that the tip is located above the base end and the seed is not sucked when the tip is located below the base end. The seeds staying at the base end in the swinging seed hopper in the seed suction position are inserted into the suction nozzle insertion hole, and a vacuum is applied to the tip of the suction nozzle. The seeds are released and seeded into a seedling pot placed on a tray that is adsorbed and conveyed.

[0008] As a characteristic structure, the vacuum suction type seeding apparatus is provided with a plurality of air ejection nozzles arranged in an oscillating seed hopper at intervals in an axial direction of a hopper rotation shaft. Air is blown out from the nozzle in the seed suction posture toward the inner surface of the base end serving as the bottom of the swing type seed hopper and to both sides of the tip end of the suction nozzle.

In this manner, air ejected from the air ejection nozzle is air-curtained on both sides of the tip of the suction nozzle which is inserted into the suction nozzle insertion hole formed in the hopper rotating shaft and vacuum-adsorbs seeds. Is formed, and a seed guiding path is formed by the air curtain and the bottom of the oscillating seed hopper to smoothly and reliably guide the seeds in the oscillating seed hopper to a position directly below the tip of the suction nozzle. Can
Fine-particle seeds can be reliably adsorbed.

[0010] Even when the remaining amount of seeds in the oscillating seed hopper is small, the seeds can be smoothly and reliably guided to a position directly below the tip of the suction nozzle through the seed guiding path, and Therefore, all the seeds can be sown without waste.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 4 show a vacuum suction type sowing apparatus A equipped with a swinging seed hopper 23 according to the present invention. The vacuum suction type sowing apparatus A is a tray containing a seedling raising pot P. It is arranged on a transport device H that transports T. The seedling raising pot P is formed with pot portions having concave portions formed in a grid pattern, and each pot portion is filled with soil before being brought into the vacuum seeding apparatus A. The vacuum adsorption-type sowing apparatus A drills a seeding hole with a pressure-reducing tool on the soil in each pot portion of the brought-in seedling raising pot P, and further evacuates seeds in a swing type seed hopper 23 described later. It is adsorbed, released into holes in the soil in each pot, and seeded.

In the vacuum adsorption type seeding apparatus A, as shown in FIGS.
It is transported on the transport device H from the X side to the Y side. Transfer device H
, And sowing nozzles 8, 8,... At the upper position of the seedling raising pot P to be conveyed. And both sides are covered with side plates 1 and 1. Further, a pot detection sensor 30, which will be described later, is provided on the lower side of the pressure suppressor 3 and the seeding hose 10, respectively, and is configured so as to suppress and seed the soil based on an input from the sensor 30. I have.

The pressure suppressor 3 is held by a pressure suppressor holder 3a as shown in FIGS.
Is attached to the lower end of the piston rod, moves up and down by the expansion and contraction operation of the cylinder 4, and reaches the top soil in the pot portion of the seedling raising pot P when the cylinder 4 is extended.
A hole for sowing is made.

In order to adjust the positions of the pressure suppressor 3 and the cylinder 4 for lifting and lowering the pressure suppressor, a front / rear position adjuster 5 configured to extend and retract a rod 5b with a knob 5a is provided between the side plates 1 and 1 in front of the apparatus. The vertical position adjuster 6 externally fitted to the rod 6b is fixed to the support plate 2 which is erected, and the vertical position adjuster 6 externally fitted to the rod 6b is similarly raised and lowered by the knob 6a. Then, the tips of both rods 5b and 6b are fixed to the connecting member 7.

With such a configuration, the up-down and front-back positions of the pressure-suppressing device 2 are adjusted by the rotation of the knobs 5a and 6a. You can pierce.

As shown in FIG. 3, the seeding nozzle 8 is held by a seeding nozzle holder 8a, connected to a front / rear position adjuster 9, and can be moved back and forth by turning a knob 9a. 1, is attached to the lower end of a seeding hose 10 hanging down from a seeding chute 18 disposed at an upper position.
The seed is released into the sowing shoot 18 by 15a, and the seed falls down in the sowing hose 10 and is seeded from the sowing nozzle 8 into a sowing hole drilled in the top soil in the pot.

Next, the swing type seed hopper 23 according to the present invention will be described.
Will be described.

First, the moving configuration of the suction nozzle 15a will be described with reference to FIG.

A horizontal cylinder 11 which moves in the front-rear direction is disposed at the center of one side plate 1, and both ends of piston rods 11a, 11a of the horizontal cylinder 11 are fixed to the side plate 1, The connecting plate 12 is fixed to the side plate of the horizontal cylinder 11, and the upper and lower cylinders 13 are fixed to the connecting plate 12, while the tip of the piston rods 13a, 13a of the upper and lower cylinders 13. The suction nozzle 15 described below
a is fixed to a suction nozzle support 14 that supports a.

In this way, the suction nozzle support 14 can be moved up and down and back and forth, and the suction nozzle 15a can be moved between the positions (a) to (c) in FIG. The vertical position in the position (c) can be adjusted by rotating the suction nozzle height adjustment knob 14a so that an optimum seed suction position or seed discharge position can be obtained.

As shown in FIGS. 2 and 4, a suction nozzle support pipe 15 is laid on the tip of the suction nozzle support 14 in a direction perpendicular to the conveying direction. A large number of suction nozzles 15a are provided at the lower part of the surface and project downward at predetermined intervals in the axial direction of the suction nozzle support pipe 15, and the number of suction nozzles 15a is twice the number of horizontal row pots of the seedling raising pot. The base is communicated and connected to the suction nozzle support pipe 15, an air pipe 15b is piped into the suction nozzle support pipe 15, and the base end of the air pipe 15b is connected to a vacuum pump and a compressor. Same air piping 15b
By switching the flow of the air sucked in from each nozzle 15a or supplied to each nozzle 15a, seed adsorption and seed discharge are enabled. 15c is an air hole. Note that the suction nozzle 15a can be replaced with another type depending on the type of the seed b to be sown and the shape of the seedling raising pot P.

Left and right side walls of a frame 16 erected between the side plates 1 and 1
As shown in FIGS. 3 and 4, a hopper rotation shaft 24 is provided between the hopper rotation shaft 24 and the suction nozzle insertion hole 24a. The suction nozzles 15a are formed in a vertically penetrating state with a certain interval in the axial direction so that each suction nozzle 15a can be inserted into each suction nozzle insertion hole 24a. 24b is the hopper rotation axis
A seed refill hole formed in the center of 24
A seed replenishing hose 22 is connected to 24b. 25 is a mounting bolt.

As shown in FIGS. 4 and 5, the above-mentioned hopper rotation shaft 24 has a base end portion of a horizontally long rectangular box-shaped swing type seed hopper 23 having substantially the same width as the hopper rotation shaft 24. The swingable seed hopper 23 is mounted so that it can swing up and down, and the seed-sucking posture in which the tip is located above the base end, and the seed non-sucking position in which the tip is located below the base end. The inner surface 23a of the base end serving as the bottom in the seed sucking posture is formed into an arc surface having substantially the same radius around the axis of the hopper rotation shaft 24, and the inner surface 23a In this case, the tip opening 15d of the suction nozzle 15a is arranged close to.

In the swing type seed hopper 23, as shown in FIGS. 4 and 5, an air supply pipe 35 is arranged along the hopper ceiling wall 23b and parallel to the hopper rotation shaft 24. In the lower part of the peripheral surface of the air supply pipe 35, the base ends of a number of air ejection nozzles 36 are connected and communicated at a certain interval in the axial direction of the air supply pipe 35, and each air ejection nozzle 36 The tip opening 36a of the suction nozzle 15a is opened in the seed suction position on the inner surface 23a of the base end serving as the bottom of the oscillating seed hopper 23 and toward the side of the tip of the suction nozzle 15a.

In this manner, the air jetted from the tip openings 36a, 36a of the pair of adjacent air jet nozzles 36, 36 is supplied to the suction nozzle 15 inserted into the suction nozzle insertion hole 24a.
Air curtains a, a are formed toward both sides of the tip end of a, and a seed guiding path 37 is formed by the air curtains a, a and the inner surface 23a of the oscillating type seed hopper 23 to form the oscillating type. The seed b in the seed hopper 23 can be guided to a position directly below the suction nozzle 15a.

Therefore, the seed b in the swing type seed hopper 23
Is fine and the amount is small, the seed b can be smoothly and reliably guided to a position directly below the suction nozzle 15a, and the seed b can be reliably guided by the suction nozzle 15a. , So that all the seeds b can be sown without waste.

Further, between the left and right side walls 16a, 16a of the frame 16,
As shown in FIG. 3, an arm rotation shaft 28 is inserted just below the swinging seed hopper 23, and a pair of right and left arms 29, 29 is protruded from the arm rotation shaft 28. The distal ends of the arms 29, 29 are connected to the left and right side walls of the swing type seed hopper 23 via links 26, 26, respectively, and the arm rotating shaft 28 is rotated by a rotary cylinder (not shown), so that the link is rotated. The swing type hopper 23 can be swingably changed between the above-described posture for seed adsorption and the posture for non-seed adsorption via the 26 and 26. 27 is a connecting bolt.

The embodiment of the present invention is configured as described above, and the operation of the suction nozzle 15a during the seeding operation will be described below with reference to FIGS.

By expanding and contracting the horizontal cylinder 11 and the upper and lower cylinders 13, the suction nozzle support pipe 15 is moved from the position immediately above the seeding chute 18 as shown in FIG. Swinging seed hopper 23)
The suction nozzle 15 is moved to a position immediately above the hopper rotation shaft 24 and the vacuum pump is driven at the same position.
Start suction by a.

As shown in FIG. 6C, the suction nozzle
15a is inserted into the oscillating seed hopper 23 through the suction nozzle insertion hole 24a of the hopper rotation shaft 24, and air is jetted from the air jet nozzle 36.

As shown in FIG. 6D, the swing type seed hopper 23 is swung from the seed non-sucking position to the seed sucking position to change the seed b in the hopper 23.
Is moved to the base end side, and the seed b
Adsorb only one grain.

At this time, the inner surface 23a of the base end serving as the bottom of the swingable seed hopper 23 is formed in an arc surface having substantially the same radius centered on the axis of the hopper rotating shaft 24 in the seed sucking posture. The suction nozzle is inserted into the suction nozzle insertion hole 24a formed in the hopper rotation shaft 24 and vacuum-adsorbs the seeds.
The distance between the distal end opening 15d of the suction nozzle 15a and the inner surface 23a of the base end can be kept constant as shown in FIG. 5, and the air curtains a and b just below the base end of the suction nozzle 15a. Since the seed guiding path 37 is formed by a, the seed b can be guided smoothly and reliably, and only one fine particle b can be reliably adsorbed.

Then, the seed b in the oscillating seed hopper 23
Even when the remaining amount is small, all the seeds b can be sown without waste since the suction can be surely performed by the suction nozzle 15a.

As shown in FIG. 6 (e), the ejection of the air from the air ejection nozzle 36 is stopped, and the swing type hopper 23 is swung from the seed sucking posture to the seed non-sucking posture. By changing, the seed b in the hopper 23 is moved to the tip end side.

As shown in FIG. 6F, the suction nozzle
15a is pulled out of the swinging-type seed hopper 23 and the suction nozzle insertion hole 24a of the hopper rotation shaft 24 in the seed suction state.

As shown in FIG. 6G, the suction nozzle
15a is moved to a position immediately above the seeding shoot 18 in a state where the seeds are adsorbed.

As shown in FIG. 6H, the suction nozzle
Stop suction of 15a and suck low-pressure air
The seeds b are released into the seeding shoot 18 by discharging from the seeding shoot 15 a, and the seeds are seeded into the seedling raising pot P through the seeding shoot 18.

As shown in FIG. 4, a seed collecting cradle 17 having a shape inclined downward from the lower portion of the hopper is disposed at a lower position in the frame body 16 so that the scattered seeds, After receiving the remaining seeds taken out of the seed hopper after the seeding, a plug 17a is provided at the bottom so that the seeds collected at the bottom can be collected.

4 is located above the front surface of the frame 16.
As shown in FIG. 3, a seeding chute support 19 for holding the upper part of the seeding chute 18 is fixedly provided, and at the tip of an arm 20 protruding from the support plate 2 in an inverted L-shape,
Holding the funnel-shaped auxiliary hopper 21, connecting the seed replenishing hose 22 to the swing type seed hopper 23 from the auxiliary hopper 21,
The seed shortage in the swinging seed hopper 23 can be compensated.

[0041]

According to the present invention, the following effects can be obtained.

According to the first aspect of the present invention, a plurality of air ejection nozzles are disposed in the oscillating type seed hopper, and air is ejected from each of the air ejection nozzles. The seeds in the oscillating seed hopper can be guided to the position directly below the suction nozzle because the air curtain for guiding air can be formed, and the fine particle seeds can be reliably sucked by the suction nozzle. Can be.

Therefore, even when the remaining amount of seeds in the swing type seed hopper is small, all the seeds can be sown without waste.

According to the second aspect of the present invention, a plurality of air ejection nozzles are arranged at intervals in the axial direction of the hopper rotation shaft in the oscillating seed hopper, and air is emitted from each air ejection nozzle. Formed on the hopper rotation shaft because it is ejected toward the inner surface of the base end, which is the bottom of the swing type seed hopper, in the seed suction posture, and to both sides of the tip of the suction nozzle. The air ejected from the air ejection nozzle forms an air curtain on both sides of the tip of the suction nozzle that vacuum-adsorbs the seeds by inserting it into the suction nozzle insertion hole. A seed guiding path is formed by the bottom part, and the seeds in the oscillating seed hopper can be smoothly and reliably guided to a position directly below the tip of the suction nozzle. Adsorb to Can be.

Even when the remaining amount of seeds in the oscillating seed hopper is small, the seeds can be smoothly and reliably guided to a position directly below the tip of the suction nozzle through the seed guiding path, and Therefore, all the seeds can be sown without waste.

[Brief description of the drawings]

FIG. 1 is a side view of a vacuum adsorption type sowing apparatus equipped with a swing type seed hopper.

FIG. 2 is a front view of the same.

FIG. 3 is a rear view of the same.

FIG. 4 is a partially cutaway side view of a vacuum suction type sowing apparatus showing a seed suction structure when a swing type seed hopper is mounted.

FIG. 5 is a partially sectional perspective view of the swing type seed hopper.

FIG. 6 is an explanatory view of the operation of the swing type seed hopper.

[Explanation of symbols]

 A Vacuum suction type seeding device 15a Suction nozzle 23 Swing type seed hopper 24 Hopper rotation axis

Claims (2)

[Claims] 1. A swinging-type seed hopper having a base end mounted on a hopper rotation shaft having a suction nozzle insertion hole so as to be vertically swingable. The upper end of the swinging-type seed hopper in the swingable seed hopper, which can be freely changed between a seed adsorption position located above and a seed non-adsorption position whose tip is located lower than the base end. The seeds remaining in the suction nozzle are inserted into the suction nozzle insertion holes, and the suction nozzles are vacuum-sucked to the tips of the suction nozzles, and the seeds are released into the seedling pot placed on the tray to be conveyed. In the oscillating seed hopper of the vacuum suction type sowing device, a plurality of air ejection nozzles are arranged in the oscillating seed hopper, and air is ejected from each air ejection nozzle, just below the tip of the suction nozzle. Air for guiding seeds to Oscillating seed hopper vacuum adsorption type sowing device being characterized in that it possible to form Ten. 2. A plurality of air ejection nozzles are arranged in an oscillating type seed hopper at intervals in an axial direction of a hopper rotation axis, and air is swung from each air ejection nozzle in a seed suction posture. 2. The swinging of the vacuum suction type sowing apparatus according to claim 1, wherein the seed is ejected toward the inner surface of the base end serving as the bottom of the moving seed hopper and to both sides of the tip end of the suction nozzle. Dynamic seed hopper.