JPH0437374Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to an improvement of a seedling feeding device for a transplanter.

(Conventional technology) Traditionally, seedlings are grown in paper tubes or other seedling containers.
Transplantation using a transplanter is widely practiced. However, since the seedlings after raising seedlings are mixed with defective seedlings with poor growth, the seedlings are sorted in advance and fed to a disc-type planting wheel as shown in Utility Model Publication No. 52-6596, or as described in U.S. Pat. No. 4,215,513. Seedlings are connected in a beaded manner and pulled out, and a seedling detection device is installed on the conveyance path, and when defective seedlings are detected, a defective seedling discharge device is activated to discharge them from the conveyance path and only good seedlings are supplied to the planting device. As described in U.S. Patent No. 4,289,080, seedlings are transported by piping, and a micro switch is installed near the exit of the pipe, and the leaf detection by the micro switch is linked to the transport operation, so that defective seedlings are quickly transported and only good seedlings are transported at regular intervals. Methods are being taken to plant them in

(Problems to be Solved by the Invention) However, the method of planting selected seedlings requires a lot of labor for sorting, and the device of U.S. Pat. If the space is too narrow, detection will be poor and the ejection device will not operate.
The device of US Pat. No. 4,215,513 has similar drawbacks. For this reason, in Japanese Patent Application No. 61-91383, seedlings are fed to a vertical feed belt that rotates faster than the belt that feeds seedlings horizontally, and a planting disk that receives seedlings from the vertical feed belt has a shaft that interlocks with the belt. We have developed a device that uses a rotary encoder and a seedling leaf detection device installed on the leaf transport path of the seedling transport belt to control the transport speed of the vertical transport belt and plant only good seedlings at regular intervals. However, the device disclosed in Japanese Patent Application No. 61-91383 has leaves that are long and slender, like onion seedlings, with a diameter of 1 to 3 mm.
When used in plants, the sensitivity of the detection device must be very high, so the detection device often detects dirt and dust that freely falls along with the seedlings, disrupting the operation of the control device. .

(Means for Solving the Problems) The seedling feeding device for a transplanter according to the present invention was proposed for the purpose of preventing the leaf detection device from malfunctioning due to falling earth and sand. Its composition is as follows.

A transverse conveying belt 4 on which rows of seedlings P to be transplanted are mounted and conveyed laterally, and the transverse conveying belt 4
vertically conveying belts 6, 6' that transport the seedlings P in the vertical direction while holding the roots between them, and a planting device, that is, a planting disk that receives the seedlings P from the vertically conveying belts 6, 6' and plants them in the field. 9, 9, and a leaf guide member, that is, a seedling guide 7, installed along the vertical feed belts 6, 6'.

The vertical conveying belts 6, 6' are installed in an inclined state, and the leaf guide member, that is, the seedling guide 7 is formed of a wire body and is installed along the vertical conveying belts 6, 6'. Leaf detection sensor 8
is installed at a position to detect the leaf part of the seedling P that has reached the lower part of the vertical conveying belts 6, 6', and above the leaf part guiding part body, that is, the seedling guide 7, above the leaf part detecting device, that is, the seedling detection sensor 8. A soil removal board 48 is attached.

(Function) When seedlings are placed on the horizontal feed belt, soil falls off from the roots, is transported along with the seedlings, and falls from the delivery end. Since the lower part of the vertical conveying belt that detects the falling soil is located at a position shifted from directly below the sending end of the horizontal conveying belt, there is no possibility that the falling soil will be detected and the leaf detection device will be activated.

In addition, even if soil falls onto the leaf guide body, since the leaf guide body is formed of a wire, the soil will fall further through the gap, and will be transported together with the leaves. In addition, since the leaf guiding body is equipped with a soil removal plate above the leaf detecting device, soil that is about to fall into the leaf detecting device through the leaf guiding body can be removed. can be removed.

Therefore, there is no possibility that the leaf detection device will be activated by sensing the soil.

(Example) The present invention will be explained by way of example in the attached drawings. 1st
The figure shows an example of a transplanter to which the device of the present invention is installed. In the figure, 1 indicates the machine frame of the transplanter. A mounting hole 2 is provided in the front of the machine frame 1, and the machine frame 1 is connected to a tractor or the like and towed in the direction of the arrow. do.

A seedling stand 3 is provided above the machine frame 1, and seedlings P grown in paper tubes are loaded therein. It is separated into rows by a row separation device (not shown) and placed on the transverse conveying belt 4. Even if the seedlings are separated into rows by hand or by chance, the soil T in the paper cylinder always falls off and is scattered on the transverse conveying belt 4. A seedling holding ring 5 is provided above the transfer end of the horizontal feed belt 4, and a pair of narrow vertical feed belts 6, 6' are provided at the front of the transfer, and the long belt 6 separates the seedlings into individual seedlings. The lower part of the seedling is held between the belt 6' and the seedling is conveyed downward with the leaf part protruding. the vertical feeding belt 6;
6' is preferably inclined to the right or left, and
In addition, one or more linear seedling guides 7 are provided in the leaf transport path as leaf guide paths.
Preferably, a non-contact leaf detection sensor 8 is disposed at the lower end of the seedling guide 7 to detect leaves. At the lower ends of the vertical feed belts 6, 6', planting disks 9, 9 that rotate in the direction of movement of the machine are provided facing each other, and the upper part of the sent seedling P is held between the planting disks 9, 9. . The planting disks 9, 9 are known ones, preferably made of flexible rubber. The planting discs 9, 9, which hold the seedlings P with their lower parts protruding, rotate inside the opener 10 fixed to the lower part of the machine frame 1, and when they reach the lower part, they release the held seedlings P, and the subsequent pressing wheels 11
Suppress and plant.

The above device is driven by a suppression wheel 11, and the suppression wheel 1
Chain 13 is attached to sprocket 12 fixed to shaft 1.
The sprocket 15 fixed to the shaft 14 of the hanging planting disc 9 is rotated, and the rotation of the shaft 14 is transmitted to the drive shaft 17 by the bevel gear 16, and the drive shaft 17 rotates the device of the gear box 18 that drives the device. It's something to be admired.

The details of the gear box 18 are shown in FIG.
Inside, a drive chain wheel 21 is fixed to the end of the drive shaft 17, and the small chain wheel 23 of the intermediate shaft 22 is rotated via a chain 24. Chain wheel 24' on shaft 22
The small chain wheel 26 of the intermediate shaft 25 is driven via a chain 27, and the shaft 25 is provided with a large chain wheel 28 for high-speed rotation and a ratchet chain wheel 29 for constant speed feeding, and the large chain wheel 28 drives the intermediate shaft 30. The small chain wheel 31 is rotated via the chain 32, and the ratchet chain wheel 29
3 and a chain 34, the drive shaft 35 of the vertical conveying belt 6' is rotated at a constant speed. A fast-forwarding chain wheel 36, an electromagnetic clutch 37 and a gear 38 which are integrated with the fast-forwarding chain wheel 36 are attached to the drive shaft 35, and the fast-forwarding chain wheel 36 is interlocked with the large chain wheel 39 of the shaft 30 via a chain 40 to perform a ratchet. 3~ due to rotation by chain wheel 29
Rotate the shaft 35 at 5 times faster speed. Also, the gear 3
8 meshes with a gear 38' provided on the shaft 35' of the vertical conveying belt 6 on the other side to rotate them inwardly.

Further, a small chain wheel 41 is provided on the shaft 25, and a large chain wheel 43 fixed to the drive shaft 42 of the transverse belt 4 is attached to the chain 4.
4, and the circumferential speed of the horizontal feed belt 4 is 1/5 to 1/20 of the circumferential speed of the vertical feed belts 6, 6'.
so that it becomes Furthermore, a gear 45 is provided on the shaft 42 and meshes with a gear 46 on the shaft 19 of the seedling holding ring 5 to make the circumferential speeds of the seedling holding ring 5 and the transverse feeding belt 4 substantially the same. Therefore, the rotary encoder 20 is driven by the drive shaft 17, interlocks with the planting disk 9, and generates pulses by rotation in a known manner.

The detection signal of the leaf effect sensor 8 provided on the vertical conveying belts 6, 6' and the rotary encoder 2
Each pulse signal of 0 is input to the control device (CPU), and the control device (CPU) has a counter 47.
A built-in clutch counts pulse signals, and its output side is connected to the electromagnetic clutch 37. Therefore, the vertical feed belts 6, 6' separate the seedlings one by one, pinch the roots and transport them diagonally downward, but the leaves are guided by the seedling guide 7 and the accompanying soil T falls directly below. The seedlings then pass through the seedling guide 7 and fall onto the soil removal plate 48 provided at an angle below the seedling guide 7. For this reason, the leaf detection sensor 8 detects only seedlings, and when the leaf detection sensor 8 detects the leaves, the control device (CPU)
is input, the counter 47 starts counting, and within the predetermined value, the clutch 37 is not operated and the vertical feed belts 6, 6' are moved to the planting disk 9 by the ratchet chain wheel 29.
It rotates at a constant speed approximately equal to the circumferential speed of , but when it exceeds that speed, even if the electromagnetic clutch 37 is actuated, the large chain wheel 28 , small chain wheel 31 , large chain wheel 39 , and rapid traverse chain wheel 36 rotate faster, and the ratchet chain wheel 29 rotates faster. Since it spins idly, it switches from constant speed rotation to high speed rotation. Due to this high-speed rotation, the paper tube seedling P is sent at high speed, and as mentioned above, the leaf part from which the earth and sand T has been separated is detected by the leaf part detection sensor 8, so the control device (CPU) returns to zero, and the electromagnetic clutch 37 also returns to its old state. The constant speed rotation by the ratchet chain wheel 29 is resumed. It is then passed to the planting disk 9,
Although the seedlings are planted, since the seedlings lacking leaves are not detected by the leaf detection sensor 8, the seedlings are passed at high speed and are buried between good seedlings P or fall off.

(Effects) As is clear from the above description, the device of the present invention is constructed by installing a longitudinal belt at an angle, forming the leaf guide body with a wire body, and installing the leaf guide member along the obliquely installed vertical belt. A leaf detection device was installed to detect the leaves of the seedlings that reached the bottom of the vertical feeding belt, and a soil removal plate was attached to the leaf guide body above the leaf detection device. By doing so,
It has the following effects.

When seedlings are placed on the horizontal feed belt, even if the soil falls off from the roots and is transported along with the seedlings and falls from the delivery end, the leaf detection device will detect the leaves because the vertical feed belt is installed at an angle. Since the lower part of the vertical conveying belt is located at a position offset from directly below the sending end of the horizontal conveying belt, there is no possibility that the falling soil will be detected and the leaf detection device will be activated.

Even if soil falls into the leaf guide body, since the leaf guide body is made of linear bodies, the soil will fall further through the gap and will be transported together with the leaves. Moreover, since a soil removal plate is attached to the leaf guiding body above the leaf detecting device, soil that is about to fall into the leaf detecting device through the leaf guiding body can be removed. This prevents the leaf detection device from sensing the soil and activating it.

Therefore, the leaf detection device accurately senses only the leaves of the seedlings that have reached the lower part of the vertical feed belt, and accurately operates the control device etc. connected thereto.

[Brief explanation of drawings]

FIG. 1 is a side view of the transplanter of the present invention, FIG. 2 is a front view of the main parts, FIG. 3 is an explanatory diagram of the drive device, and FIG. 4 is an explanatory diagram of the control device. 4...Horizontal feed belt, 6...Vertical feed belt, 7
...Leaf guide member, ie, seedling guide, 8...Leaf detection device, ie, leaf detection sensor, 48...Soil removal plate.

Claims (1)

[Scope of utility model registration request] A horizontal conveyance belt that carries rows of seedlings to be transplanted and conveys them in the horizontal direction, a vertical conveyance belt that conveys the seedlings transferred from the horizontal conveyance belt in the vertical direction while holding the roots between them, and the vertical conveyance. In a seedling feeding device for a transplanter comprising a planting device for receiving seedlings from a belt and planting them in a field, and a leaf guide body installed along the vertical feeding belt, the vertical feeding belt is installed at an angle. , the above-mentioned leaf guide body is formed of a wire body and placed along the diagonally installed longitudinal belt, and a leaf detection device is installed to detect the leaves of the seedlings that have reached the lower part of the vertical belt. Particularly, a seedling feeding device for a transplanter, characterized in that a soil removal plate is attached to the leaf guiding body above the leaf detecting device.