JPH0228647Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a device for selecting and separating defective seedlings from soil-grown seedlings, such as seedlings grown in paper tubes, and in particular, provides a device that, when attached to a transplanter, allows only good seedlings to be transplanted. be.

When seedlings are sown and raised in seedling containers such as paper tubes, the sown seeds fail to germinate or germinate late, resulting in seedlings that are unsuitable for transplantation. These defective seedlings need to be removed prior to transplanting, but this removal work is usually done manually, with a worker on board the transplanter, arranging the seedlings on a conveyor and sorting them out.
This sorting work is extremely troublesome and has the drawback of requiring a lot of effort. For this reason, the applicant first fed out paper cylinder seedlings onto two linear belts, and
Developed a device that transports books by supporting the roots with one belt and supporting the leaves with the other belt, and dropping and sorting paper cylinders with no leaves on the way.
-Refer to No. 28650). The inventor improved the above device,
In order to ensure the conveyance of the leaves, the leaves were held between a pair of upper and lower linear belts, and the seedlings that were not held were allowed to fall, but if the holding place was not good, the base of the seedling leaves would be weak, and the area near the base would sag. A phenomenon occurred in which the conveyor belt did not get on the next conveyor belt.

Therefore, the inventor of the present invention conducted further research and developed a device that separates paper tube seedlings one by one, followed by a conveyance path that supports the roots of the separated paper tube seedlings and a conveyance path that holds the leaves between the upper and lower ends. When separating defective seedlings without leaves, the problem was solved by using a device that lifts and transports the leaves as a conveyance path that holds the leaves.

An example of the present invention will be explained with reference to the attached drawings.
The figure shows a transplanter equipped with the device of the present invention. In the figure, 1 indicates the machine frame of the transplanter, and the front of the machine frame 1 has mounting holes 2.
Connect it to a tractor or other towing vehicle and pull it in the direction of the arrow. A seedling stand 3 is provided above the machine frame 1, on which seedlings P grown in paper tubes are loaded, and a seat 4 is placed in front of it.
A paper tube seedling feeding device 5 is installed between the seedling stand 3 and the seat 4, and the paper tube seedlings P are sorted while being transported laterally, and the seedlings P are transferred to the paper tube. It is supplied to the seedling conveying belt 6. The conveying end of the conveying belt 6 is connected to a seedling planting disk 7 that rotates in the planting direction.
The paper tube seedlings P are fed from the direction of the cutting line by the conveyor belt 6, held, rotated downward, and released to be planted in the main field. For this purpose, a pressure wheel 8 and an opener 9 are provided below and at the rear of the machine frame 1, so that the seedling planting disk 7 rotates in the groove opened by the opener 9, and the seedlings are planted in the groove. The paper tube seedling P is suppressed by the suppression wheel 8. The above device is driven by a chain 12 that is connected to a sprocket 11 fixed to the shaft 10 of the suppression wheel 8, which is connected to a sprocket 14 fixed to the shaft 13 of the planting disk 7, and then by a bevel gear fixed to the shaft 13. 15 to intermediate shaft 16
is rotated, and the intermediate shaft 16 drives the paper cylinder seedling conveying belt 6 and the paper cylinder seedling feeding device 5.

The paper tube seedling sorting device of the present invention is built into the paper tube seedling feeding device, and its details are shown in FIG. 2 and subsequent figures. First, the worker sitting on seat 4
The upper paper tube seedlings P are peeled off in a row and placed on a seedling feeding belt 17 provided horizontally or inclined. At this time, the paper cylinder seedlings P are connected laterally using water-soluble glue, so they are separated into individual seedlings.
While holding down the paper tube seedlings P with 8, a seedling separation wheel 19 with a sponge is provided in front of it and the wheel 19 is rotated quickly to separate the seedlings one by one. For this reason, the seedling feeding belt 1
Gears 21 and 22 are fixed to the pulley shaft 20 of No. 7, and are engaged with gears 23 and 24 fixed to the shafts of a seedling holding ring 18 and a seedling separation wheel 19, respectively, and rotated in the direction of the arrow.

Below the seedling separation ring 19 are pulleys 25, 25'.
A seedling alignment conveyor 26 is installed between the pulleys 25 and 25'. The seedling alignment conveyor 26 has a width that supports the central part of the paper tube seedlings P, and a large number of projecting tubes 27 are fixed in parallel in the horizontal direction on its surface.
The spacing between the rows is set to be enough to pinch and transport one paper tube seedling P.

In addition, a root support belt 29 is stretched between the pulley 25 and a pulley 28 provided at the front in the forward conveyance direction, which forms a support conveyance path for supporting and conveying the lower end of the paper tube of the paper tube seedling P. And the upper clamping belt 3 described later
A leaf clamping belt 30 which together with the paper tube seedling belt 5 forms a clamping conveyance path for clamping and conveying the leaves of the paper tube seedlings from above and below is stretched.

This leaf holding belt 30 has its intermediate portion mounted on an intermediate pulley 31 having a larger diameter than the pulleys 25 and 28, so that the pulleys 25 and 28 are at the same height as the root support belt 29. The structure is strung in a chevron shape with the center section being the highest.

In other words, the holding conveyance path that pinches and conveys the leaves of the paper tube seedling P from above and below is the same as the support conveyance path that supports and conveys the lower end of the paper tube of the paper tube seedling P in the forward direction of conveyance. It gradually rises towards the top and then drops back to the same height.

The upper clamping belt 35 is the leaf clamping belt 3
It is suspended over pulleys 32, 33, and 34 arranged in a triangular shape above the central part of the leaf part 0, and rotates at the same speed as the leaf holding belt 30.

In addition, the leaf portion clamping belt 30 and the upper clamping belt 35
A wide belt-like belt 36 is stretched over the outer surface of the paper cylinder seedling P, and this ensures that the leaves of the paper tube seedling P are held securely, and that the leaves hang down or warp to prevent the lower pleats from falling. 25, 28, 31 or 32, 33, etc. above.

For this reason, the paper tube seedlings P separated one by one by the seedling separation wheel 19 have their central parts conveyed to the seedling alignment conveyor 26.
The lower part of the roots is supported by the root part support belt 29 and the leaves are supported by the leaf part holding belt 30 and conveyed. , the posture of the fallen paper tube seedlings P is always constant, and the seedling alignment conveyor 2
An upper holding belt 35 rotates above the conveying end of the paper tube 6 and presses down the leaves, so that the normal paper tube seedling P is supported by the root support belt 29 and the leaf holding belt 30. At this time, paper tube seedlings that do not germinate and have no leaves.
When P' is sent, there is no leaf support, so only the root is supported, and it loses its balance and falls.

As described above, defective seedlings are separated and only normal paper tube seedlings P are transported. However, since the leaf side lacks strength compared to the lower part, it tends to sag with the neck downward, and if it is sent horizontally, it will be replaced by the next conveyance mechanism, making it impossible to transfer. For this reason, in the present invention, an intermediate pulley 31 is provided, and the position where the transfer mechanism is transferred to the next transfer mechanism is raised. Also, as mentioned above, the belts 30, 3
5 has a belt-shaped belt 36 fixed thereto as a member for preventing the leaves from being caught in the pulleys, so that the pulleys 25, 28, 31, which guide both the belts 30, 35,
32, 33 etc. will not get the leaf part involved. In order to correct the posture of the normal paper tube seedlings P transported in this way, a protrusion 2 having the same structure as the seedling alignment conveyor 26 described above is placed between the pulley 31' and the pulley 28, which are centered around the axis of the intermediate pulley 31.
The seedling transfer conveyor 39, which is the next-stage conveyor, has 7'. At this time, the seedling transfer conveyor 39 includes the root support belt 29 and the leaf clamping belt 3.
0 and receives paper tube seedlings P that have reached a high position in the center of the leaf holding belt 30, and more specifically,
The projections 27' rotate to scoop up the paper tube seedling P from below and support it between the rows of projections 27', thereby correcting the conveying posture again. A seedling supply pulley 40 is provided behind the pulley 28, and two or more narrow seedling alignment belts 41 are stretched between them. Since this belt 41 rotates by biting into the deep groove of the pulley 28, its circumferential speed is the same as that of the belts 29, 30 and the seedling feeding belt 1.
It becomes slower than the circumferential speed of 7. This circumferential velocity delay is determined by considering the germination rate of the paper tube seedlings P, so if the paper tube seedlings P are only good seedlings, an excessive number of seedlings P will be supplied onto the belt 41. , since there is a defective seedling P′, the number of paper tube seedlings on the belt 41 is reduced by that amount, and the defective seedlings are missing from the paper tube seedlings on the belt 41. Since many seedlings P are pushed, when the work is continued, good seedlings P are continuously lined up on the belt 41. There is a seedling presser ring 42 above the conveying end of the belt 41, which rotates in the opposite direction to the belt 41, so that it holds the paper tube seedlings P between them and moves them forward while supplying the seedlings at a predetermined speed. The seedlings are fed out and fed to the paper cylinder seedling conveying belt 6 as described above, and then fed to the seedling planting disk 7 via the belt 6 and planted as described above.

The rotation of the above device uses a drive mechanism with gearbox 6.
This is done using a device housed in the intermediate shaft 16.
The rotation of is transmitted to the chain wheel 44 of the shaft 43 of the pulley 28 through the chain, and the chain wheel 45 of the shaft 43 is connected to the chain wheel 47 of the shaft 46 of the pulley 31' to rotate the seedling transfer conveyor 39. As expected. A gear 4 is attached to the shaft 46.
8 is provided to mesh with the gear 50 of the shaft 49 of the pulley 33, and the chain wheel 51 of the shaft 49 and the shaft 52 of the pulley 34
The upper clamping belt 35 is rotated using the shaft 53 of the pulley 32 as a driven shaft. Further, the chain wheel 54 of the shaft 46 and the chain wheel 56 of the shaft 55 of the pulley 25' are connected, and the seedling alignment conveyor 26 is rotated with the shaft 57 of the pulley 25 as a driven shaft. Therefore,
The seedling alignment conveyor 26 and the seedling transfer conveyor 3
9 and the upper clamping belt 35 rotate in conjunction with the root support belt 29 and the leaf clamping belt 30, which are rotated by the shafts 43 and 57. Further, the chain wheel 58 of the shaft 55 rotates the chain wheel 59 of the pulley shaft 20 of the seedling supply conveyor 17, and the gears 21 and 22 on the shaft 20 are the gears of the shafts of the seedling holding wheel 18 and the seedling separation wheel 19, respectively. 23 and 24 mesh with each other to rotate, so the whole unit is interlocked.

As is clear from the above, according to the present invention, only paper tube seedlings with normal leaves are supported at the lower end of the paper tube by the support conveyance path, and their leaves are held by the pinch conveyance path. However, since the pinching conveyance path gradually becomes higher in the forward conveyance direction with respect to the support conveyance path, the leaves of the paper tube seedlings are lifted higher than the paper tube. Therefore, even if the leaf part being transported may sag a little due to weakness especially near its base, it will be maintained at the desired height, and the next stage of transport path will be Since the paper tube seedlings are received at the elevated position of the clamping conveyance path, the paper tube seedlings are accurately transferred to the conveyance path, and can be smoothly conveyed in the forward direction of conveyance.

The device of the present invention may be attached to the above-mentioned transplanting machine using a planting disc, or may be used independently as a seedling selection device.

[Brief explanation of the drawing]

FIG. 1 is a side view of a transplanter equipped with the device of the present invention, FIG. 2 is a side view of the device of the present invention, FIG. 3 is a plan view of FIG. 2, and FIG. 4 is a developed view. DESCRIPTION OF SYMBOLS 1... Machine frame, 5... Paper cylinder seedling supply device, 6... Conveyor belt, 7... Planting disk, 8... Suppressing wheel, 17
... Seedling feed belt, 19 ... Separation wheel, 26 ... Seedling alignment conveyor, 27 ... Protrusion, 25, 28, 3
1, 32, 33... pulley, 29... root support belt, 30... leaf clamping belt, 36... strip belt, 39... seedling transfer conveyor, 41... seedling alignment belt.

Claims (1)

[Scope of utility model registration request] The holding conveyance path that pinches and conveys the leaves of the paper tube seedlings from above and below gradually moves toward the forward conveyance direction from the same height as the support conveyance path that supports and conveys the lower end of the paper tube of the paper tube seedlings. It is characterized by being lowered to the same height again after being raised to the same height, and that it is equipped with a conveyance path that receives paper tube seedlings at the raised position of the nipping conveyance path and transfers them in the forward direction of conveyance. Paper cylinder seedling sorting device.