JPH0544243B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a seedling feeding device for a seedling transplanter used for transplanting soiled seedlings or bare seedlings grown using various seedling raising devices into a main field. Regarding.

[Conventional technology and issues]

Towed by a tractor or the like, an opener and a planting rotating body are installed between the front grounding wheel and the rear suppression wheel, and the planting rotating body releases the pinched and transferred seedlings into the groove excavated by the opener. In a seedling transplanter of the type that suppresses with a suppression wheel, the seedling feeding device that supplies seedlings to the planting rotary body feeds the seedlings arranged in close rows on the seedling feeding mechanism to the planting rotary body at a constant rate. Ideally, the seedlings should be fed at intervals so that the desired distance between plants can be accurately obtained, but the timing of the transport or transfer conveyor that makes up the seedling feeding device, the load on the ground wheels, It has been very difficult to maintain a constant feeding interval to the planting rotor due to slippage of the grounding wheel, separation and rearrangement of the seedlings in close rows, and the quality of the growth of the seedlings.

The purpose of the present invention is to easily solve this difficulty and to always keep the number of planted seedlings constant.

[Means to solve the problem]

The configuration of the present invention adopted to achieve the above object is as follows.

A seedling conveyor D that conveys seedlings in close rows;
A supply conveyor f receives the seedlings in close rows conveyed by this seedling conveyor D and separates them into individual seedlings P, and supplies them to the planting rotary body B,
g, h, and a seedling sensor 3 attached to the supply conveyor g.
2, a rotary encoder 33 attached to the rotating body B, and a seedling feeding mechanism E that automatically transfers the seedlings in close rows to the seedling transport conveyor D. When seedling sensing by the seedling sensor 32 is performed every count of the set number of pulses of the rotary encoder 33, the seedling P is supplied toward the planting rotary body B.

In the above, the seedlings in close rows are continuous seedlings with soil e.
It may be.

(Function) Seedlings in close rows are automatically transferred from the seedling feeding mechanism to a seedling transport conveyor, which is further separated into individual seedlings and transported by a supply conveyor, and then transferred to a rotary encoder attached to the planting rotor. On the condition that the set pulses are counted, the supply conveyor supplies each separated seedling to the planting rotary body, and the supply interval is equal to the set pulse number, that is, the number of planting pulses. Exact match between stocks.

〔Example〕

Hereinafter, an embodiment of the present invention in which seedlings are raised in the seedling raising device A shown in FIG. 14, and as shown in FIG. 15, each continuous seedling e is made into soil-attached seedling P, which is supplied and transplanted. I will explain in detail.

First, the seedling raising device A has the following configuration. A is a flexible main plate made of synthetic resin that is vertically rectangular in plan, and a long groove-shaped seedling chamber b running in a direction perpendicular to its longitudinal direction, that is, in the width direction, is integrally molded in multiple stages in the vertical direction. .

This long groove-shaped seedling room b has a large number of pot-shaped spaces 1 (18 in the figure) each having a circular plane and having a volume necessary for raising one seedling P of vegetables or the like.
It has a continuous shape at its upper side. In other words, each long groove-shaped seedling chamber b has a partition wall 2 at its bottom.
are erected at the required intervals, leaving only the upper part as a series of empty spaces.

c is a cross-shaped cut formed on the bottom of each pot-shaped cavity 1 for inserting the seedling extrusion rod described later, d is an engagement hole arranged along the left and right long side edges of the main plate a, and a long groove-shaped seedling chamber b They are provided correspondingly to both ends of the .

To raise seedlings using this seedling raising device A, fill the long groove-shaped seedling chamber b with suitable bed soil to a point slightly above the top of the partition wall 2, sow the seeds there, and then cover with the same bed soil, as is the case with conventional methods. The seedlings are raised and managed, whereby the roots extend to the bottom of each pot-shaped cavity 1 partitioned by a partition wall 2, and the desired seedlings P grow with soil.

To extrude the seedlings P with soil for transplantation, a seedling extrusion rod described later is thrust into each pot-shaped cavity 1 of the long groove-shaped seedling chamber b all at once through a cross-shaped cut c at the bottom thereof. As a result, a continuous seedling e having an inverted small concave notch 3 formed by the partition wall 2 of each pot-shaped space 1 on the lower side and continuous on the upper side.
(Fig. 15 A) can be pushed out, and by separating them into individual plants, independent seedlings with soil can be produced.
can be obtained (Figure 15b).

The seedling raising device A with the above configuration is mounted, and the seedlings P are attached to the soil.
The construction of an embodiment of the seedling feeding device of the present invention, which feeds seedlings to the planting rotary body B so as to allow seedlings to be planted accurately at regular intervals, is as follows.

As shown in Fig. 1, in C, an opener and a planting rotor B are installed between a front grounding wheel RO and a rear suppression wheel C, which are pivoted on a machine platform A pulled by a tractor, etc. In the groove that was excavated by D,
The machine frame E is installed on a seedling transplanter (only the main parts are shown) of the type in which the planting rotary body B releases the soiled seedlings P which are pinched and transferred and is suppressed by the rear suppression wheel C.
A seedling feeding mechanism that receives and transfers the seedling raising device A and transfers the continuous seedlings e stored therein to the seedling conveyor D; A seedling spacing correction feeding mechanism receives the soiled seedlings P in a separated state and supplies the seedlings P with soil to the planting rotary body B while correcting the spacing to the required spacing that will ultimately result in the desired planting spacing. , these seedling feeding mechanism E, seedling conveyor conveyor D, and seedling spacing correction feeding mechanism F are connected to each other so as to be driven in a predetermined relationship, and the above-mentioned machine frame C
It is mounted on.

The seedling feeding mechanism E includes horizontal U-shaped left and right guides 4,
Insert the left and right long side edges of the main plate a of the seedling raising device A into the main plate 4, and engage the engagement holes d on the left and right long side edges with the sprockets 5, 5 and latches 6, 6 which are pivotally supported in the front, rear, left and right directions. By aligning them together, the seedling raising device A received from the entrance 7 can be moved horizontally along the left and right guides 4, 4.
It is configured to be intermittently transferred while being curved into a letter shape, and sent out from the outlet 8.

In addition, this seedling feeding mechanism E moves seedling pushing rods 9 of the same number (18 in this embodiment) as the number of rows of pot-shaped spaces 1 forming the long groove-shaped seedling chamber b of the seedling raising device A at predetermined intervals. That is, each pot-shaped space 1 is provided with seedling extrusion bodies 10 arranged in a line at opposing intervals so as to be freely movable back and forth by left and right crank mechanisms 11, 11, and the seedling raising device A is arranged horizontally in the U direction as described above. At a predetermined time point, the seedling extrusion front body 10 advances to the position where it curves into a letter shape, so that each seedling extrusion rod 9 cuts a cross-shaped cut in the bottom of each pot-shaped cavity 1 of the opposing long groove-shaped seedling chamber b. The continuous seedlings e in the row are pushed out from the seedling raising device A onto the seedling conveyor D (FIGS. 8 to 10).

Further, the seedling feed-out mechanism E has a plurality of seedling leaf separating plates 12 placed above the top opening through which the seedling raising device A passes, by means of an arch-shaped support frame 13, at a required interval, that is, each pot of the long groove-shaped seedling chamber b. It is supported upright at the same intervals as the space 1.

Seedlings grown in the seedling raising device A often have their leaves intertwined with each other, especially between those located adjacent to each other on the left and right in the same row, but the seedling leaf separating plate 12
The seedling nursery A is transferred along the left and right guides 4, 4,
This is to untangle the leaves of the continuous seedlings e before they are pushed onto the seedling transport conveyor D. This allows the seedlings to be processed in the subsequent process, that is, to the soiled seedlings P, which are unit plants of the continuous seedlings e. Ensure that there is no problem in separating the parts and transferring them at required intervals.

The seedling transport conveyor D is horizontally mounted on the front side of the seedling delivery mechanism E, and a large number of partition plates 14 are arranged in a row at the same intervals as the seedling leaf separation plates 12 in the center thereof.

G is a seedling support frame attached to the seedling transport conveyor D, and left and right side plates 17, in which two support rods 15, 15 parallel to the running direction of the seedling transport conveyor D are attached to the left and right ends of the horizontal shaft 16; 17 between both ends,
By the rotation of the horizontal frame shaft 16, the support rods 15, 15
can pass in a circular orbit at a position close to the outside of the seedling transport conveyor D including the partition plate 14, but normally one of the supporting rods 15 is connected to the seedling separation plate 12. The other supporting rod 15 is parked near the apex of the circular orbit between the opposing partition plate 14 and near the bottom of the circular orbit (FIGS. 2 and 4).

The support rod 15 near the apex of the circular orbit holds the seedling leaves of the next stage of continuous seedlings e, which are in the seedling raising device A and are held on the side of the seedling feeding mechanism E, without being fed out onto the seedling conveyor D yet. , serves to support the seedlings above the partition plate 14 so that they do not engage with the partition plate 14 of the seedling transport conveyor D.

However, the support rod 15 is interlocked with the forward and backward movement of the seedling pushing body 10, that is, the seedling pushing rod 9 is
As the push-out operation of the continuous seedlings e in the relevant stage is started, it rotates clockwise in the drawing to allow the supported seedling leaves to enter between the partition plates 14, and the continuous seedlings e in the relevant stage are pushed out. When the seedlings have finished being fed out onto the conveyor D, the other support rod 15 reaches near the top of the circular orbit and supports the seedlings of the next stage of continuous seedlings e above the partition plate 14 in the same way as above. .

The seedling spacing correction feeding mechanism F includes an upper supply conveyor f, a middle supply conveyor g, a lower supply conveyor h, and a drive device that controls and drives these as appropriate.

The upper stage supply conveyor f transfers and feeds the soiled seedlings P transported by the seedling transport conveyor D to the middle stage supply conveyor g. 18, and wide and narrow short clamping belts 19, 19', which are also installed in parallel at a required interval.
The short clamping belts 19, 19' are positioned opposite to each other in front of the conveyance end of the seedling conveyor D, and their upper ends are positioned opposite to the conveyance end of the seedling conveyor D.

The middle supply conveyor g is for feeding the soiled seedlings P transferred and fed by the upper supply conveyor f to the lower supply conveyor h, and uses wide and narrow clamping belts installed in parallel at a required interval. 20, 20', 21,
21'.

The lower supply conveyor h is for supplying the above-mentioned soiled seedlings P to the planting rotary body B, and has a pair of wide belts 2.
It consists of 2,22'.

As described above, the continuous seedlings e are pushed out from the seedling feeding mechanism E onto the seedling conveyor D and are conveyed.
The roots of the seedlings are once sandwiched between the seedling pressing roller 23 and the upper surface of the conveyance end of the seedling conveyor D, and while being transferred along the curved surface of the conveyance end, the seedlings are successively soiled. Each plant is separated as P, and the root side of the seedling leaves is held by the narrow holding belts 18' and 19' of the upper stage supply conveyor f, and the leaf tip side part is held by the wide holding belts 18 and 19, respectively. It is transferred and fed toward the middle stage supply conveyor g with its base protruding backward.

Therefore, soiled seedlings P that cannot be held by the upper supply conveyor f as described above, that is, soiled seedlings P that do not have seedling leaves or have extremely poor growth even if they have seedlings, fall off and are not transferred and fed. This results in uneven seedling feeding intervals.

Such unevenness in seedling feeding intervals occurs due to various reasons such as the running timing of various conveyors and slips of ground wheels, but in the device of the present invention,
The seedling feeding interval by the lower supply conveyor h is corrected so that it is equal between the planted plants, and the planting rotary body B that receives the soiled seedlings P whose intervals have been corrected plants the soiled seedlings P at a predetermined spacing. It is something that you will be able to do.

The operation of the device of the present invention is as follows.

The hydraulic motor 24 is constantly rotating, and its rotation is transmitted to the drive shaft 26 via an electromagnetic clutch 25, gears, chains, etc., and rotates it.

The rotation of the drive shaft 6 causes the intermittent feed drum 28 to rotate at a set pitch (36 degrees) by the engaging piece 27, and also rotates the horizontal shaft 29 by 18 degrees through gears, chains, etc.

Accordingly, the sprockets 5, 5 fixed to the horizontal shaft 29 and the ratchets 6,
6 is also rotated 18 degrees in the same way, and the seedling raising device A is transferred by one step between the rows of the long groove seedling chambers b, and the long groove seedling chamber b of the concerned stage is moved to a position opposite to the seedling push rod 9. .

The rotation of the drive shaft 26 also rotates the horizontal shaft 16 through 180 degrees and the seedling support frame G through 180 degrees through gears and chains. By this,
The supporting rod 15 near the apex of the circular orbit is replaced with the supporting rod 15 near the bottom point, and the seedlings of the continuous seedlings e of the relevant stage are inserted between the starting plates 14, and the seedlings of the next stage are inserted. Seedling leaves of continuous seedlings e are separated by partition plate 14
be supported in a position that does not engage with the
As mentioned above.

The rotation of the drive shaft 26 further moves the seedling extrusion body 10 forward and backward via the gears, chains, and crank mechanisms 11, 11, so that,
Each seedling extrusion rod 9 enters and takes out each pot-shaped space 1 of the opposing long groove-shaped seedling chamber b, and transfers the continuous seedlings e of the relevant stage from the seedling raising device A to the seedling transport conveyor D, as described above. That's right.

30 is a proximity switch installed in the vicinity where the bracket provided on one side plate 17 of the seedling support frame G passes, and as mentioned above, the support rod 15, which was near the top of the circular orbit, reaches near the bottom point. When the seedling support frame G rotates half a rotation, the proximity switch 30 senses this, and the electromagnetic clutch 25 is turned OFF using the signal.

As a result, the above-mentioned operations are completed, and after that, the electromagnetic clutch 25 is turned on when the seedling conveyor D stops as described later, and the same operation is repeated again.

Next, the seedling conveyor D and the upper and middle supply conveyors f and g of the seedling spacing correction feeding mechanism F are operated by a motor 31.
It rotates by. This will be explained in detail below.

When the seedling transport conveyor D has finished loading the continuous seedlings e from the seedling feeding mechanism E in the manner described above, it rotates together with the upper stage supply conveyor f to transport the continuous seedlings e and soil them separately. The seedlings P are held and transferred to the upper supply conveyor f.

In the above, the rotational speed of the upper stage supply conveyor f is set to twice the rotational speed of the seedling transport conveyor D. Even with this, the distance between the seedlings P with soil on the upper stage supply conveyor f is wider than that on the seedling transport conveyor D.

From the time when the first seedling P with soil is transferred from the upper supply conveyor f to the middle supply conveyor g, and the first seedling P with soil is detected by the seedling sensors 32, 32 set oppositely on the lower part of the middle supply conveyor g. , the microcomputer starts counting the number of pulses of the rotary encoder 33 (described later), and the next ranked seedling P is counted by the seedling sensor 3 at a set number of pulses, for example 10 pulses.
2, 32 is detected, the next ranked seedling P with soil is fed to the lower supply conveyor h, and this process is repeated.

However, when the seedling sensors 32, 32 detect the next-ranked seedling P with the set pulse number less than 10, the required electromagnetic clutches are disconnected, and the seedling conveyor D, the upper supply conveyor f, and the middle supply conveyor g stop. Thereafter, when the rotary encoder 33 counts a set number of pulses, for example 10, they rotate again and perform a predetermined job.

The number of pulses is counted by a rotary encoder 33 attached to the planting rotary body B which rotates in conjunction with the rear suppression wheel C.
This is done by counting the rotation angle of and inputting that value into the microcomputer.

When the seedling conveyor D rotates a distance corresponding to the number of soiled seedlings P on the relevant stage (18 in this embodiment), the proximity switch 34 senses the detection metal fitting 35 attached to the seedling conveyor D. , the required electromagnetic clutch is disconnected to stop the seedling transport conveyor D, and the partition plate 14 is aligned with the seedling separation plate 12 of the seedling feeding mechanism E.

Regardless of the stoppage of the seedling transport conveyor D, the middle supply conveyor g and the lower supply conveyor h continue to sequentially supply the seedlings P with soil to the planting rotary body B.

In other words, the leading seedling P with soil held between the middle supply conveyor g waits until the distance between it and the rear seedling P with soil held between the lower supply conveyors h reaches a predetermined distance between the planted plants. When the seedlings P are placed between the planted plants, the seedlings P with soil on the middle supply conveyor g are transferred to the lower supply conveyor h, and this process is repeated as described above.

While the middle supply conveyor g is stopped, from the seedling transport conveyor D and the upper supply conveyor f,
There is no need to supply soiled seedlings P to the middle supply conveyor g.

In addition, since the middle supply conveyor g rotates at three times the speed of the lower supply conveyor h, the number of soiled seedlings P held by the middle supply conveyor g is small until the designated planting time is reached. It's okay.

Therefore, even if the seedling transport conveyor D is stopped, the seedlings P with soil can be smoothly supplied to the planting rotary body B. In addition, the stop period of the seedling conveyor D is within the range in which correction between planted plants can be made as described above.

〔Effect of the invention〕

As is clear from the above description, the present invention provides the following effects.

The tightly arranged seedlings are automatically transferred from the seedling feeding mechanism to the seedling transport conveyor, which is further separated into individual seedlings and transported by the supply conveyor, where the setting of the tally encoder attached to the planting rotor is performed. On the condition that the pulses are counted, the supply conveyor will supply the separated seedlings for each plant to the planting rotary body, and the supply interval will be determined by the set pulse number, that is, the exact distance between the planted plants. matches.

In addition, in the embodiment, continuous seedlings with soil are described as closely arranged seedlings, but the present invention is not limited to this, and may be seedlings in paper tubes, bare seedlings, or the like.

[Brief explanation of the drawing]

The drawings show embodiments of the present invention, and FIG. 1 is a simplified side view showing the device of the present invention mounted on a machine towed by a tractor or the like, and FIG. 2 is a side view of the device of the present invention. Figure 3 is a rear view of the main parts of the same as above, Fig. 4 is a side view of the main parts of the same as above, Fig. 5 is a longitudinal cross-sectional side view of the seedling feeding mechanism, and Fig. 6 is a group of seedling leaf separation plates of the same as the above seedling feeding mechanism. FIG. 7 is a rear view of the main parts of the same as above, and FIGS. 8, 9, and 10 are partial side views and plan views showing the situation in which successive seedlings are pushed out from the seedling feeding mechanism onto the seedling conveyor. , 11th,
Figures 12 and 13 are partial side views showing the situation in which continuous seedlings are transferred from the seedling conveyor to the seedling spacing correction feeding mechanism, and Figure 14A is a plan view of the seedling raising device used in the above embodiment of the present invention. Figure 15B is a cross-sectional view taken along the line A in Figure 15, and Figure 15A is a partially omitted front view of continuous seedlings taken out from the seedling raising device.
B of the figure is a perspective view of one seedling with soil, shown separated from the above-mentioned continuous seedlings. D... Seedling transport conveyor, P... Seedlings with soil, B...
Planting rotor, f...upper supply conveyor, g...
...Middle stage supply conveyor, h...Lower stage supply conveyor,
32... Seedling sensor, 33... Rotary encoder, e... Continuous seedling, E... Seedling feeding mechanism.

Claims (1)

[Claims] 1. A seedling transport conveyor that transports seedlings in close rows;
This seedling transport conveyor transports seedlings in close rows.
A supply conveyor that receives separated seedlings for each plant and supplies them to a planting rotary body, a seedling sensor attached to this supply conveyor, a rotary encoder attached to the rotary body, and a seedling conveyor that separates the seedlings in close rows. It consists of a seedling feeding mechanism that automatically transfers the seedlings to the above-mentioned seedling transport conveyor, and when the seedling sensor detects the seedlings every count of the set number of pulses of the rotary encoder, the seedlings are fed toward the planting rotary body. A seedling feeding device for a seedling transplanter, characterized in that: 2. The seedling feeding mechanism receives and transfers a seedling nursery device that grows and incubates seedlings in close rows in multiple stages, and automatically transfers each stage of the seedlings to the seedling transport conveyor intermittently. The seedling feeding device for a seedling transplanter according to claim 1, characterized in that: 3. The supply conveyor consists of upper, middle, and lower supply conveyors, and the upper supply conveyor separates and receives seedlings in close rows transported by the seedling conveyor into individual seedlings, and the middle supply conveyor transfers the seedlings to the lower stage. Before feeding to the supply conveyor, the upper and middle supply conveyors run and stop based on the seedling sensing action of a seedling sensor attached to the middle supply conveyor so that the feeding interval is between the planted plants. A seedling feeding device for a seedling transplanter according to claim 1 or 2. 4. The seedling feeding device for a seedling transplanter according to claim 1, 2 or 3, wherein the closely arranged seedlings are continuous seedlings with soil.