JPS62248410A - Apparatus for correcting root omission - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a transplanter for seedlings grown in paper tubes, and its purpose is to transplant seedlings even if the supplied seedlings contain defective seedlings that do not germinate. The system detects only good seedlings and plants them at regular intervals.

(Conventional technology) Paper tube seedlings are grown by sowing seeds in paper tubes gathered in a honeycomb shape, but it is impossible to completely remove defective seeds that do not germinate at the time of sowing, and some seedlings do not germinate in each paper tube seedling. There are defective seedlings. Therefore, if you plant all the seedlings as they are, you will end up with missing plants and the yield will be reduced. Therefore, it is conventional practice to select and plant seedlings manually, or use a sorting device as described in Japanese Patent Publication No. 55-28650, and plant only good seedlings. or even U.S. Patent No. 4.21
5. Pull out the soiled seedlings into several spheres as described in No. 513.

A seedling detection device is provided on the conveyance path, and when defective seedlings are detected, a push-out device is activated to discharge them out of the system, and only good seedlings are supplied to a planting wheel and planted, or as described in US Patent No. 4.289.
As in No. 080, a continuous line of soiled seedlings is transported through a pipe, and a microswitch is installed near the outlet of the pipe, with its detection end facing the leaf conveyance path of the soiled seedlings, so that good seedlings are continuously transported. There is a known device that feeds seedlings one by one at a predetermined pitch, and when there are defective seedlings, only those parts are fast-forwarded and only good seedlings are planted at regular intervals.

(Problems to be Solved by the Invention) In all of the above inventions, only good seedlings are planted at predetermined intervals, but manual selection requires a lot of labor and the soil part falls off during the work. The method of Japanese Patent Publication No. 55-28650 is labor-saving and efficient, but the sorting equipment is expensive.

This has the disadvantage that the weight of the transplanter increases considerably when it is installed. The method of US Pat. No. 4,215,513 can be used to select seedlings with independent eastern parts, but if the seedlings grow long, the leaves become intertwined, making detection difficult. Also, U.S. Patent No. 4.289.
The method of No. 080 also has the disadvantage that detection becomes difficult if the leaves become entangled, and if the detection end collides with the next eastern part in a fast-forward state, the eastern part will be lost. As described above, conventional devices have some drawbacks, and there is still no known device that is inexpensive, can reliably detect even leaf-tangled seedlings, and can transplant only good seedlings at regular intervals.

(Means for Solving the Problems) The present invention was made in view of the above circumstances, and as a result of research to ensure that only good seedlings are transplanted at regular intervals using an inexpensive and simple device, Focusing on the fact that defective seedlings will fall over if fed to the planting disk at a high speed, and even if they are transplanted between good seedlings, they will not be overwhelmed by the growth of good seedlings and will not interfere with the growth of good seedlings. They are separated into two pieces and placed side by side on a conveyor that rotates laterally, and a pair of long and short conveyors that rotate up and down faster are installed at the conveyor end of the conveyor. At the lower end of the seedling transfer conveyor, the protruding portion is held between a pair of planting discs and the seedlings are planted.

A sensor for detecting protruding seedling leaves is installed at the bottom of the seedling transfer conveyor, and a rotary encoder is installed on the shaft that interlocks with the planting disk to input each signal to a control device, and the seedlings are transferred. The seedlings are fast-forwarded and stopped at the sensor position, and when the pulses of the rotary encoder reach a predetermined number, the seedlings are first rotated at a slow speed to be supplied to the planting disk, and then at high speed to detect the next seedling. The problem was solved by using a device that rotates each conveyor.

(Function) When the paper tube seedling row on the horizontal transfer conveyor is sent to the conveying end, the most advanced paper tube seedling collides with the faster-rotating seedling transfer conveyor, and the distance between it and the next paper tube seedling increases. It is transported downward with the eastern part protruding. A seedling detection device is provided at the bottom of the seedling transfer conveyor, and detection is performed reliably since there is a considerable distance between the paper tube seedlings 2. The detection signal is input to the control device, and the transverse feed conveyor and seedling transfer conveyor are stopped, but even if defective seedlings are sent, there is no detection in the eastern part, so they are fed quickly until good seedlings are sent. Also, when the input to the pulse control device of the rotary encoder reaches a predetermined count value, that is, when the disk planting device rotates by a predetermined angle and the transplanter moves at a predetermined planting interval, the clutch of the seedling transfer conveyor is engaged and the first planting starts. Conveyed at a slow speed that is constant with the circumferential speed of the disc.

The protruding part of the paper tube seedling is held in the planting disk and released by itself. Then when the pulse reaches the set number.

A fast-forwarding clutch is engaged and the seedlings are transferred at a speed of 2 to 5 times, and the seedlings that have been rapidly separated and transferred reach the position of the seedling detection device and are stopped. At this time, defective seedlings are not detected and are passed to the planting disk at high speed, but since the circumferential speed is significantly different, they are not held in a normal shape and lie down after planting.Therefore, good seedlings Planted only at regular intervals.

(Example) Fig. 1 shows an example of a transplanter equipped with the device of the present invention. In the figure, 1 indicates a machine frame, with mounting holes etc. provided in the front and the machine being towed by a tractor or the like and moving in the direction of the arrow. Above the machine frame 1 is a seedling stand 2.
The device is equipped with seedlings P grown using paper or the like, and a seedling supply belt 3 is stretched in front of the seedlings P.

Paper tube seedlings P are obtained or separated into multiple rows by a seedling row separating device (not shown) and placed on the seedling supply belt 3.

A seedling presser ring 4 is provided above the seedling conveying end of the seedling supply belt 3, between which paper tube seedlings P are fed out, and in front of the feeding belt is a pair of long and short seedling transfer belts 5.5 which rotate in the vertical direction. The width of the seedling feeding belt 3 is narrower than that of the seedling feeding belt 3, and is wide enough to hold the lower part of the paper tube seedlings. Also, since the seedling transfer belt 5.5 is always rotated faster than the seedling supply belt 3, the paper cylinder seedlings P that are fed out between the seedling supply belt 3 and the seedling presser ring 4 are rotated faster than the seedling transfer belt 5.5. Seedlings are separated into individual seedlings, held between a short belt 5 and transferred downward. The transferred paper tube seedlings P reach a pair of planting discs 6, 6 that rotate in the direction of movement of the machine, and the protruding portions are held between them and the seedlings P are placed in the opener 7 below the machine frame 1 at about 90 degrees. It can be planted by rotating it. These devices are driven by a gear box 8, which contains many transmissions, and one drive of the transmission is linked to a suppression wheel 9 provided at the rear of the machine frame 1. For this purpose, the chino 12 is hooked onto the sprocket 11 fixed to the shaft 10 of the suppression wheel 9.

It is linked with a sprocket 14 fixed to the shaft 13 of the planting disk 6, and the rotation of the shaft 13 is controlled by a large heavy vehicle 15 and a small bevel gear 17 fixed to the intermediate shaft 16. The intermediate shaft 16 rotates the device in the gear box. It's something to be admired.

The details of the present invention are shown in FIG. 2 and below, and the intermediate shaft 16
A driving chain wheel 18 is fixed to the shaft end, and a rotor 1 toe encoder 19 is arranged at the end of the shaft to measure the rotation of the shaft 16. As is well known, since the rotary encoder counts the pulses generated by rotation, this value is determined by the axis 16.
This corresponds to the rotation angle of the planting discs 6 and 6, which are interlocked with the rotation angle of the planting discs 6 and 6. The rotary encoder of the present invention refers to such a measuring device.

The driving chain wheel 18 interlocks with a clutch chain wheel 22 of a shaft 21 via a chain wheel 20, and the clutch chain wheel 22 drives the shaft 21 via an electromagnetic clutch 23.

The chain wheel 24 of the shaft 21 drives the small chain wheel 27 of the shaft 26 via the chain 25, and the shaft 26 is provided with a large chain wheel 28 and a ratchet chain wheel 29, and the large chain wheel 28 drives the small chain wheel 27 of the shaft 30. The wheel 31 and the chain wheel 32 are interlocked, and the shaft 300 and the large chain wheel 33 drive the rapid chain wheel 36 of the seedling transfer belt 50 and the rotating shaft 35 through the chain 34.

The ratchet wheel 29 on the shaft 26 drives the slow chain wheel 37 on the shaft 35. The fast-forward chain wheel 36 is attached to the shaft 35 via an electromagnetic clutch 38, and when the electromagnetic clutch 38 operates, the shaft 35 rotates at high speed by the rapid-forward chain wheel 36, but when it does not operate, the shaft 35 is driven by the ratchet chain wheel 29. Rotates slowly. This slow speed is such that the circumferential speed of the seedling transfer belt 5 and the circumferential speed of the planting disk 6.6 are approximately equal, and the high speed is preferably about 2 to 5 times the slow speed. Furthermore, the gear 39 fixed to the shaft 35 is connected to the shaft 4 of the seedling transfer belt 5 on the other side.
It meshes with the gear 41 which is fixed at zero and rotates in opposite directions. Also, a small chain wheel 42 fixed to the end of the shaft 35 is connected to the chain wheel 42.
3, the large chain wheel 45 of the drive shaft 44 of the seedling supply belt 3 is driven, and the seedling supply belt 3 is rotated more slowly, so that the gear 46 of the shaft 44 meshes with the gear 49 of the shaft 48 of the seedling presser ring 4, so that Rotate in the opposite direction.

A sensor 50 is installed at the bottom of the seedling transfer belts 5, 5.
are opposed to each other, sandwiching the path of the leaves passing through the paper tube seedling P, and the signals from the sensor 50 and the rotary encoder 19 are transmitted to a control device 51 with a built-in computer and a pulse counter 52.
This allows you to enter Then, the output side of the control device 51 is connected to the electromagnetic clutch 23.38. Further, when the sensor 50 detects a seedling, the control device 51 sends a command to the electromagnetic clutch 23 to disengage the clutch chain wheel 22, and when the count value of the rotary encoder 19 reaches a predetermined value, the control device 51 disengages the clutch chain wheel 22. The shaft 3 is engaged with the ratchet chain wheel 29.
5, and when it reaches a predetermined value, the electromagnetic clutch 3
8, the clutch chain wheel 22 is set to idle and rotate quickly. Therefore, when the sensor 50 detects a seedling, the seedling supply belt 3 and the seedling transfer belts 5, 5 stop.

At this time, since the planting disk 6.6 is rotating, the intermediate shaft 1
6 rotates all the time, and the rotary encoder 19 also rotates. Therefore, a pulse signal is always input from the rotary encoder 19 to the control device 51 and counted by the counter 52. This count is set to a desired value, for example, 50, depending on the planting interval, that is, the rotation angle of the planting disk 6.6, and when that value is reached, the electromagnetic clutch 23 is activated, and the seedling supply belt 3 and the seedling transfer The belt 5.5 is rotated at a slow speed by the ratchet chain wheel 29 and passes the seedling P to the planting disk. Next, when a predetermined number of pulses are counted (for example, 10), the electromagnetic clutch 3a is activated and rotates at high speed. As a result, seedling supply belt 3. The seedling transfer belts 5, 5 rotate at high speed during the difference 40, during which they separate and transfer the paper cylinder seedlings P. When a good seedling P is sent to the position of the sensor 50, the signal is input to the control device 51 and electromagnetic The clutches 23 and 38 stop conveying the cut seedlings and wait. If a defective seedling P' is sent, the sensor 50
Since it is not detected, the seedlings P are transported until good seedlings P are sent.

Even if each transport device 3.5 is stopped, the planting wheel 6 is rotating, so a puzzle occurs, and when the counter 52 reaches the predetermined number +1, the seedling feeding starts. The sent seedlings P are held between the planting disks 6°6 and planted in the main field as described above.

(Effects) The present invention is carried out as described above, and the good seedlings P with nine leaves are transported via the fast-forwarding mechanism, detected by the sensor 50, waited at that position, and fed to the planting discs 6, 6 at a slow speed. This allows the plants to be planted in the correct position.

However, defective seedlings P' with no eastern part are fed to the planting disk 6.6 at high speed, and due to the difference in circumferential speed, it becomes impossible to transfer them, or even if they are held, they are held in an oblique position, so it is difficult to plant them. When the attached disc is released into the main field, it collapses and is buried by the subsequent suppression wheel. For this reason, good seedlings P are always planted at regular intervals according to the predetermined number of pulses, but even if bad seedlings P' are planted and may germinate later, they will not grow because they are overwhelmed by good seedlings, and this will not hinder the growth of good seedlings. It's something that doesn't exist.

[Brief explanation of drawings]

Figure 1 is a side view of a transplanter equipped with the device of the present invention;
The figure is a detailed view of the gearbox, FIG. 3 is a side view of essential parts of the device of the present invention, and FIG. 4 is an explanatory diagram of the control device. 3... Seedling supply belt 5... Seedling transfer belt 16...
・Intermediate shaft 19...Rotary encoder 22...
・Clutch chain wheel 23.38...Electromagnetic clutch 29・
...Ratchet chain wheel 37...Slow feed chain wheel 36...
・Rapid chain wheel 50...sensor 51...control device

Claims (1)

[Claims] (1) A conveyor that closely conveys the paper tube seedlings, a pair of seedling transfer conveyors that separate the paper tube seedlings from the conveyor and transfer them vertically, and a pair of planting disks that receive the paper tube seedlings from the seedling transfer conveyor. A seedling detection device is provided at the bottom of the seedling transfer conveyor, a rotary encoder is provided on the shaft that interlocks with the planting disk, and the respective signals are input to the control device, and the seedling detection device detects the leaves. When the number of pulses from a rotary encoder reaches a predetermined number, the seedlings are transported at a slow speed for a fixed number of pulses, and then at a high speed.