JPH0328724Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a transplanter for transplanting seedlings, such as onions, at regular intervals, and particularly to a seedling feeding mechanism thereof.

(Prior art) In conventional transplanters, seedlings supplied from a seedling supply mechanism are conveyed into a planting groove while being held between a planting disk that rotates around a horizontal axis, and the seedlings are fed from a seedling supply mechanism to the planting disk. Generally, the seedlings are fed in a substantially horizontal position using a conveyor or a pick-up member.

(Problems to be solved by the invention) In the above-mentioned conventional technology, when seedlings are fed in a horizontal position, the roots and stems and leaves may shift in the front-back direction, and since the roots are heavier than the stems and leaves, the horizontal position may collapse, and the seedlings cannot be planted in a horizontal position. There is no guarantee that the seedlings will always be held in a constant position by the attached disks, and it has been difficult to accurately position the seedlings in the planting groove. In addition, it was difficult to accurately take out one seedling one by one from a seedling box containing a large number of seedlings, and it was necessary to divide the seedlings manually.

(Means for solving the problem) The present invention takes out the seedling A from the seedling box 37 while sucking the root part a with the suction hole 47 of the horizontally rotating suction disk 38, thereby keeping the seedling A in a hanging position. The seedlings A can be taken out from the seedling box 37 and supplied to the planting disk 26, so that the seedlings A can be taken out one by one accurately and planted in a constant posture at all times.

That is, the feature of the specific configuration of the problem solving means of the present invention is that the seedlings A supplied from the seedling supply mechanism 7 are held in the planting groove 32 by being held between the planting disks 26 that rotate around the horizontal axis. In the transplanter, the seedling feeding mechanism 7 includes a seedling box 37 that holds the seedlings A in an upright position with the roots a facing upward;
The seedling box 37 is arranged above the planting disk 26 so as to be rotatable around the vertical axis, and the seedling box 37 is
A suction hole 4 that sucks the root part a of the seedling A inside and transfers the suctioned seedling to the planting disk 26 by releasing the air suction.
7 and a suction disk 38.

(Function) The seedling A is held in the seedling box 37 in an upright position above the root part a, and is pressed toward the front end side by the pushing plate 41, and the suction hole 47 of the suction disk 38 passing above it is pressed. They are absorbed one by one. Suction disk 38
is formed with one or more suction holes 47, and the seedlings A that have been suctioned by air suction are taken out one by one from the seedling box 37, and the suction disk 38 is rotated around the vertical axis. It then moves to above the planting disk 26 while maintaining the hanging position. The seedling A in the hanging position is held in the same position by the planting disk 26, and is planted after approximately half a rotation around the horizontal axis.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

In Figs. 1 to 4, reference numeral 1 denotes a transplanter that is towed and attached to a tractor via a three-point linkage mechanism 2, and includes a machine frame 3 and a pair of stays 4 provided on both left and right sides of the machine frame 3. A grounding ring 5, a plurality of planting mechanisms 6 arranged between both grounding wheels 5, and each planting mechanism 6.
Correspondingly, the seedling feeding mechanism 7 is provided above the seedling feeding mechanism 7, the furrowing device 8 is placed in front of the seedling feeding mechanism 7, and the soil covering mechanism 9 is placed on the side of the seedling feeding mechanism 7.

At the front side of the machine frame 3, a traction force generating mechanism 13 is provided at the center of the left and right sides, and this mechanism 13 is connected to the tractor.
It has a suction blower 14 driven by the rotational power of the PTO shaft.

The stay 4 is attached to a tool bar 15 of the machine frame 3 and extends rearward and downward, and a grounding ring 5 is rotatably supported at the lower end of the stay 4 via its support shaft 16. The blades roll on the ridge bottoms 18 on both sides of the ridge 17 and constitute a driving source for each part.

The tool bar 15 has a support rod 19 connected to a horizontal shaft 21 via a bracket 20 at intervals in its longitudinal direction.
They are connected to a fulcrum to be able to swing up and down, and extend rearward in parallel to each other.

24 is a rotating shaft of the planting mechanism 6, which is supported by a bearing 25 between a pair of left and right support plates 19 in a direction perpendicular to the ridges 17, and a pair of left and right planting disks 26 are attached to this rotating shaft 24. ing.

A pair of planting disks 26 are opposed to each other, and are made of a flexible material such as rubber, plastic, or canvas, and the seedlings A can be held between the planting disks 26.

Reference numeral 27 denotes a disk guide member, which is arranged radially across the front half of the planting disk 26 at the lower front side of the rotation shaft 24,
5 via an arm 28 made of an elastic plate, and the clamping roller 2 is attached on the same circumference at the outer end in the radial direction.
It has 9.

That is, when the pair of left and right planting disks 26 are rotated counterclockwise in FIG. The grip on the seedling A is released on the grounding side of the rotating shaft 24 in the vertical direction.

In addition, the pair of left and right planting disks 26 are placed in an expanded funnel-like position by means of a guide member (not shown) on the rear half side thereof, and constitute a seedling receiving section 30 here. Seedlings A are grasped in the range from section 30 to guide member 27, and seedlings A are dropped into groove 32 from the root side at seedling opening section 31. By repeating this, seedlings A are continuously placed in groove 32. will be transplanted.

The furrower 8 is provided in advance of the planting mechanism 6, and although a shoe shape is shown in this example, it may also be disc-shaped. Any type of material that can be formed is sufficient.

The soil covering mechanism 9 is constructed as shown in FIG. 3, and includes a pair of left and right soil covering wheels 34 supported rotatably around an inclined horizontal axis at the rear end of the support plate 19 via a stay 33. In this case, the planting mechanism 6 and a part thereof are wrapped in the front-rear direction and arranged with the planting mechanism 6 in between so as to expand upwardly on both sides of the groove 32.

The seedling supply mechanism 7 is roughly divided into a seedling box 37, a suction disk 38, and a suction mechanism 39. The seedling box 37 is mounted on the rear part of the support rod 19 via a stay 40, and a push plate 41 is provided inside to be slidable in the front and rear directions. The seedling A is stored and held in the seedling box 37 in an inverted position with the root portion a facing upward, and can be taken out from the take-out port 42 formed at the front end of the side wall 37b.

A guide rod 43 that penetrates the back wall 37a of the seedling box 37 is fixed to the pushing plate 41, and is pressed forward by a coil spring 44 fitted to the guide rod 43, lightly pushing the stored seedling A forward. The remaining seedlings are always held in the front part of the seedling box and in an upright posture even if the seedlings A are pulled out.

The suction disk 38 is fixed to the lower end of the vertical shaft 46, and has one or more suction holes 47 near its outer periphery.
is formed to penetrate in the vertical direction. The front part of the seedling box 37 and the seedling receiving part 36 of the planting disk 26 are located below the rotational trajectory of the suction hole 47. It is located at a position displaced by approximately 90°, and the suction hole 4
7 sucks and pulls out the root part a of the seedling A in the seedling box 37, rotates it horizontally by about 90 degrees, and then transfers the seedling A to the planting disk 26.

In order to adsorb the seedling roots a, a suction cup 49 of a suction mechanism 39 having a crescent-shaped negative pressure chamber 48 is tightly superposed on the upper surface side of the suction disk 38 with a sealing material 50 interposed therebetween. The suction cup 49 is attached to a support stand 5 which is erected from the support rod 19 via a bracket 51.
A flexible pipe 54 connected to the suction blower 14 is connected to a suction port 53 that communicates with the negative pressure chamber 48 .

The vertical shaft 46 of the suction disk 38 is supported via a suction cup 49 and a bearing plate 55 on its upper surface,
It is driven by the power of the grounding wheel 5 via transmission means 56, 57, etc. Incidentally, the planting disk 26 is also driven by the power from the grounding wheel 5, and the suction disk 38 and the planting disk 26 rotate synchronously.

Next, the operation of planting seedlings in the transplanter 1 will be explained.

When the suction blower 14 is driven while the tractor is running and pulling the transplanter 1, the negative pressure chamber 48 of the suction cup 49 becomes negative pressure, and the rotation of the grounding wheel 5 synchronizes the planting disk 26 and the suction disk 38. Rotate.

When the suction hole 47 enters the negative pressure chamber 48 from the starting end side, it sucks air, and while passing above the front of the seedling box 37, the roots of one seedling A (located near the extraction port 42) below. a, and the suction disk 38 is attached to the vertical axis 4.
By rotating horizontally around 6, the single seedling A that has been attracted is pulled out from the seedling box 37 and moved to above the planting disk 26 while hanging in an inverted position.

The rear half of the upper part of the planting disk 26 is always open and serves as a seedling receiving section 30, so the seedlings A hanging down from the suction disk 38 are sent from the seedling receiving section 30 between the two planting disks 26. Enter and be caught. At about the same time, the suction hole 47 exits from the terminal end of the negative pressure chamber 48, so that the suction is released, and the seedling A is released from the suction disk 38 and takes charge of the planting disk 26.

After the seedling A is held between the upper sides of the planting disk 26, the seedling A is moved approximately halfway around by the disk guide member 27, and reaches the open part 31 where the disk guide member 27 is interrupted.
It is released from the planting disk 26 and supplied into the groove 32.

It should be noted that the present invention is not limited to the above-mentioned embodiment, and for example, the seedling box 37 is connected to the planting disk 26.
It is possible to displace the seedling box 37 to an angle other than 90 degrees, or to reverse the front and back of the seedling box 37 and place it directly under the vertical axis 46.

(Effect of the invention) According to the invention detailed above, the planting disk 2
The seedling supply mechanism 7 that supplies the seedlings A to the seedlings A in the seedling box 37 picks up the seedlings A in an upright position in the suction hole 47 of the suction disk 38.
Since the seedlings A can be taken out one by one, the taken out seedlings A can be horizontally moved by rotating around the vertical axis of the suction disk 38 while maintaining the hanging position with the root part a suctioned. However, since the seedlings are held between the planting disks 26, the seedlings are always kept in a constant posture without being shifted or distorted on the planting disks 26, making it possible to accurately and reliably plant the seedlings in the grooves 32.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a partially sectional side view of the main part, FIG. 2 is a plan view of the main part,
FIG. 3 is a partial cross-sectional rear view of the main parts, and FIG. 4 is a side view of the entire transplanter. 1... Transplanter, 5... Grounding wheel, 6... Planting mechanism, 7... Seedling supply mechanism, 8... Grooving device, 9... Soil covering mechanism, 14... Suction blower, 26... Planting disk , 37... Seedling box, 38... Suction disk, 39...
...Adsorption mechanism, 41...Pushing plate, 46...Vertical shaft, 4
7... Suction hole, 49... Suction cup, A... Seedling, a...
...root.

Claims (1)

[Scope of Claim for Utility Model Registration] The seedlings A supplied from the seedling supply mechanism 7 are held between the planting disks 26 that rotate around the horizontal axis and are placed in the planting groove 3.
2, the seedling feeding mechanism 7 includes a seedling box 37 that holds the seedlings A in an upright position with the roots a facing upward;
The seedling box 37 is arranged above the planting disk 26 so as to be rotatable around the vertical axis, and the seedling box 37 is
A suction hole 4 that sucks the root part a of the seedling A inside and transfers the suctioned seedling to the planting disk 26 by releasing the air suction.
7.