JPH0638722B2 - Row-separating transposition device for soil seedlings - Google Patents

Description

Detailed Description of the Invention [Industrial applications]

The present invention relates to a row separating and transposing apparatus for soil seedlings.

[Prior art]

Row seedlings in which a plurality of soil seedlings are in close contact are transported by a row seedling transport conveyor, and separated into individual soil seedlings at the sending end,
There are already known various transplanters having various structures for supplying them to an implanter and implanting them at a predetermined implant interval. The row seedlings used in this kind of transplanter are those in which a large number of soil-grown seedlings raised in a paper tube, a seedling box, etc. are continuous with each other and are row-separated from the aggregated seedlings that are aggregated in a honeycomb shape or vertically and horizontally. . For the column separation, for example, a manual separating device as described in Japanese Utility Model Publication No. 49-10746 is used, and as in the transplanting machine disclosed in Japanese Patent Publication No. 47-17180, the assembly is performed. It is known that seedlings are placed on a wide collective seedling supply conveyor and intermittently transferred, and separated one by one by a punching device.

[Problems to be Solved by the Invention]

The column separation by the above-mentioned manual separating device is a character-like manual operation, and there is a disadvantage that the transfer to the row seedling conveying conveyor must be performed manually. Further, the row separation by the thrusting device, due to the difference in physical properties, etc. that occur in the seedling raising process of the soil-based seedlings, a slip state occurs between the collective seedlings and the conveyor, the slip is accumulated by Even if the thrusting device is operated, the collected seedlings may not reach the predetermined position, which is not practical. An object of the present invention is to eliminate such drawbacks, to reliably perform a predetermined row separation, and to automatically and accurately transfer to a row seedling transfer conveyor.

[Means for Solving the Problems]

The structure of the row separation transposing apparatus for soil seedlings of the present invention is as follows. The collective seedling supply conveyor 4 intermittently drives the soil-containing seedlings 5 forming the collective seedlings a with a length of 1 pitch or more as a traveling unit. The row seedling transporting conveyor 50 positions the receiving end portion in front of the sending end portion of the collective seedling feeding conveyor 4. A large number of seedling pressing needles 21 are arranged and supported above the delivery end of the collective seedling feeding conveyor 4. The seedling pressing needle 21 is inserted into each soil-grown seedling 5 forming the second row row seedling b of the set seedling a on the sending end of the set seedling supply conveyor 4, and the second row When the row seedling b of No. 2 has reached the position of the first row, the row seedling b is moved to a position above each soil-grown seedling 5 forming the row seedling b newly reaching the position of the second row. Then, it is stabbed in each of the soil-bearing seedlings 5. The seedling separating plate 36 is in a horizontal state above the receiving end portion of the row seedling conveying conveyor 50, and is in a standing state in front of the sending end portion of the collective seedling feeding conveyor 4. The seedling separating plate 36 is provided with a sensor 48 for detecting the first row of row seedlings b of the set seedling a on the sending end of the set seedling feeding conveyor 4 in the standing state. A large number of seedling separating needles 45 are arranged and supported on the seedling separating plate 36. When the seedling separating plate 36 is in the upright state and the sensor 48 detects the first row of row seedlings b of the collective seedling a, the seedling separating needle 45 of each seedling 5 of each row seedling b. It is something that gets stuck in. In addition, the seedling separating needle 45 comes out of each soil-embedded seedling 5 when the seedling separating plate 36 is in the horizontal state and there is no preceding row seedling b on the receiving end of the row seedling transporting conveyor 50. ,
The row seedling b is dropped and transferred onto the receiving end of the row seedling transporting conveyor 50. The seedling pressing needle 21 is inserted into each soil-embedded seedling 5 of the second row row seedling b of the collective seedling a, and the seedling separation needle 45 is attached to each soil-embedded seedling b of the first row. While being pierced in 5, the seedling separating plate 36 is slightly retracted in the standing state to separate the first row seedling b from the second row seedling b.

[Action]

A seedling separating needle is inserted into each soil-grown seedling of the first row row seedling of the gathered seedling on the sending end of the gathered seedling supply conveyor, and a seedling pressing needle is inserted into each soil seedling of the second row row seedling. It is possible to reliably separate the first row seedlings from the second row seedlings by inserting the seedlings and retracting the seedling separation plate a little while keeping it standing. By moving the first row of row seedlings with the seedling separating needle still inserted into the receiving end of the row seedling conveying conveyor by setting the seedling separating plate in a horizontal state, by pulling out the seedling separating needle there. The row seedlings can be accurately dropped and transferred onto the receiving end of the row seedling transport conveyor. Since the collective seedling supply conveyor is driven by the length of one pitch or more of the soil-bearing seedlings forming the collective seedling as a traveling unit, the conveyor may cause some slip between the collective seedlings. However, the first row of seedlings of the collected seedlings at the delivery end of the collective seedling supply conveyor is reliably detected by the sensor provided in the seedling separation plate, and therefore the above-described separation and transposition operations are performed accurately. .

【Example】

Reference numeral 4 denotes a collective seedling supply conveyer in which a flat belt is wound and mounted around pulleys 3 and 3'which are mounted on both ends in the longitudinal direction of side plates 2 and 2 which are horizontally mounted on the machine frame 1. Reference numeral 50 denotes a row seedling transporting conveyor erected with its traveling direction orthogonal to the traveling direction of the above-mentioned collective seedling feeding conveyor 4, which is also made of a flat belt and has its receiving end portion at the sending end portion of the collective seedling feeding conveyor 4. It is located on the lower front side. The soil-seedling row separating and transposing apparatus according to the present invention is a collective seedling (a large number of soil-bearing seedlings grown in a paper tube, a seedling box, or the like, which are continuous with each other and are gathered in a honeycomb shape or vertically and horizontally) a Separated into row seedlings b at the sending end of the collective seedling supply conveyor 4,
This is for transferring the separated row seedling b to the receiving end of the row seedling transporting conveyor 50. The transposed row seedlings b are separated into individual soil-bearing seedlings 5 at the sending end of the row seedling transporting conveyor 50 and then supplied to a planting device and transplanted to a field at a predetermined planting interval. Reference numeral 6 is a shaft of the pulley 3, and 7 is an electromagnetic clutch which is attached to the shaft 6 and has a cam 8 fixed to the outside thereof, and intermittent rotation of the cam 8 is transmitted to the pulley 3 via the electromagnetic clutch 7. The cam 8 has a passive piece 9 projecting on the front side thereof and a locking piece 10 projecting on the rear side thereof. Normally, the locking piece 10 is engaged with a stopper 12 by a spring 11, and the passive piece 9 stands by. It is in the position (Figs. 1 and 2). When the electromagnetic clutch 7 is in an excited state, the cam 8 is rotated by applying a required pressing force to the passive piece 9, and then the aggregate seedling supply conveyor 4 via the shaft 6 and the pulley 3.
Is run in the direction of the arrow for at least one pitch of the row seedling b (earthed seedling 5). When the pressing force is released and the electromagnetic clutch 7 is de-energized, the cam 8 reverses by the spring 11 and the locking piece 1
0 is engaged with the stopper 12 to return to the original state. Reference numeral 15 is a seedling holding bracket which is laterally mounted between the mounting brackets 14 and 14 at the upper ends of the columns 13 and 13 which are established outside the side plates 2 and 2, and which can swing back and forth about a shaft 14 'as a fulcrum. In addition, the guide rail 16 is provided vertically at the center of the front surface. 18 is a mounting bracket 1 on the upper end of the seedling holding bracket 15.
7 is a hydraulic cylinder suspended from the shaft 7, and 22 is a seedling retainer plate in which a large number of seedling retainer needles 21 are hung in line at the lower end edge and the rear surface is slidably mounted on the guide rails 16. The tip of the rod 19 and the fitting 20 of the seedling holding plate 22 are axially connected. The seedling pressing plate 22 is pulled by a spring 23 stretched between the mounting brackets 14, 14, so that the edge of the seedling pressing bracket 15 is attached to the mounting brackets 14, 1.
4 to support the seedling pressing needle 21 in a state in which the seedling pressing needle 21 is obliquely inclined rearward from the vertical state (first to third).
Figure). Further, the seedling holding plate 22 is the rod 1 of the hydraulic cylinder 18.
9 rises or falls along the guide rails 16 due to expansion and contraction of the guide rails 16, and the descending moves each seedling pressing needle 21 to each of the predetermined row seedlings b of the set seedlings a facing each other at the delivery end of the aggregated seedling supply conveyor 4. It is possible to pierce the soil-bearing seedling 5 and pull it out by ascending. When the seedling pressing needles 21 are pierced into the soil-bearing seedlings 5 and the collective seedling supply conveyor 4 travels as described above, the seedling pressing plate 22 resists the spring 23 as the collective seedlings a are transported. Rotate forward to bring the seedling pressing needle 21 into a vertical state (Fig. 4). Then, when the seedling pressing plate 22 is raised and each seedling pressing needle 21 is pulled out from each soil-applied seedling 5, the seedling pressing plate 22 is pulled by the spring 23, so that the edge of the seedling pressing bracket 15 is brought into the pin 24. Automatically and rapidly returns to the engaged position. Further, by descending the seedling pressing plate 22 at the returned position, each seedling pressing needle 21 is pierced into each soil-embedded seedling 5 of the second row row seedling b from the head of the collective seedling a. ing. In addition, the number of the seedling pressing needles 21 arranged in rows on the seedling pressing plate 22 is larger than the number of the soil-grown seedlings 5 forming the row seedling b, and at least one or more of the soil-grown seedlings 5 are stabbed at a required interval. It is hanging in a line. Next, 25, 25 are fixedly installed on the machine casing 1 so as to be located on both sides in front of the sending end of the aggregate seedling supply conveyor 4, more specifically, on both outer sides of the ends of the side plates 2, 2. It is a frame. Reference numerals 26, 26 denote cam plates 2 supported and installed on the side frames 25, 25 at a required interval between them and their inner surfaces.
Reference numerals 7 and 27 are guide rails directly installed on the inner surfaces of the side frames 25 and 25. The cam plates 26, 26 continuously form a curved guide surface between the vertical guide surface on the rear side and the horizontal guide surface on the bottom side. Reference numeral 29 is a slide frame, which is the guide rails 27, 2
The guide plate 28 is slidably mounted on the rail 7, and is horizontally mounted between the guide plates 28. The height of the slide frame 29 is almost the same as the upper surface of the delivery end of the collective seedling supply conveyor 4, and is also higher than the receiving end of the row seedling transfer conveyor 50. 30 is a cylinder bracket, which is laterally fixed between the lower surfaces of the outer ends of the side frames 25, 25, and
The hydraulic cylinder 31 is provided at the center of the side frame 2
It is installed parallel to 5,25. In the hydraulic cylinder 31, the tip of the rod 32 is connected to the metal fitting 33 at the center of the slide frame 29. Therefore, the slide frame 29 slides back and forth along the guide rails 27, 27 by the driving of the hydraulic cylinder 31. Reference numeral 34 denotes a cam roller that is axially supported on the lower side of the slide frame 29, and is for contacting the passive piece 9 and applying a pressing force thereto to rotate the cam 8. Reference numeral 36 denotes a seedling separating plate which is connected to the slide frame 29 so as to be able to move up and down.
7 and 37 are axially connected, and the high protrusions 38 and 38 on the seedling separating plate 36 and the low protrusion 3 on the slide frame 29 are connected.
Stretch the springs 39 and 39 between 8'and 38 ',
Further, cam rollers 40, 40 rolling along the cam surfaces of the cam plates 26, that is, the vertical guide surface, the horizontal guide surface, and the curved guide surface are pivotally supported on the seedling separating plate 36. That is, the seedling separation plate 36 is given a force of rising to the slide frame 29 centering on the shaft connecting portion by the pulling of the springs 39, 39, and normally the cam rollers 40, 40 are connected to the cam plates 26, 26. It is in a horizontal state by being brought into pressure contact with the horizontal guide surface, and actually stands up when the cam rollers 40, 40 are in pressure contact with the vertical guide surfaces of the cam plates 26, 26, as will be described later. , When the cam plates 26, 26 are separated from each other. In other words, the seedling separation plate 36 reciprocates similarly with the slide frame 29 that reciprocates by the drive of the hydraulic cylinder 31, but at each position of the reciprocation, that is, when the cam rollers 40, 40 are cam plates. 26,
While in pressure contact with the horizontal guide surface of 26, the horizontal state (1st
(Fig.) Is in a half-raised state when it is in pressure contact with the curved guide surface, and in an upright state (Fig. 2) when it is in pressure contact with the vertical guide surface. Even if 40 is separated from the vertical guide surfaces of the cam plates 26, 26 to the rear of the vertical guide surfaces, the upright state is still maintained (FIGS. 3 and 4). Reference numeral 41 is a through hole provided in a row at the bent upper edge 36 'of the seedling separating plate 36, and the same number as the seedling pressing needles 21 are provided at the same intervals. 44 is a horizontal rod fixed to the free end of arms 43, 43 whose base ends are rotatably attached to the attachment pieces 42, 42 established on the seedling separating plate 36, and 45 is the above-mentioned horizontal rod 44. Hole 41
A seedling separating needle having a curved shape, which is planted at the same number and the same number (and thus the same number as the seedling pressing needle 21).
46 is an operation motor installed in the center of the seedling separation plate 36,
The tip of the rotating arm 47 is connected to the center of the horizontal rod 44. The seedling separating needles 45 are simultaneously inserted into and removed from the through holes 41 in accordance with the rotation of the rotating arm 47 and the horizontal rod 44 accompanying the driving of the operation motor 46 (first).
(Dashed line and solid line). The operation motor 46 is driven in conjunction with a sensor 48 which is attached to the seedling separation plate 36 with a detection portion slightly protruding from a window hole 49 opened at a required position. The sensor 48 releases the excitation of the electromagnetic clutch 7 and releases the engagement between the cam 8 and the shaft 6 to release the cam 8 from the cam 8.
It also has a function of not rotating the shaft 6 even if the shaft rotates. As the sensor 48, a pressure sensor, a limit switch, a proximity switch or the like can be used, but the pressure sensor is preferable. Reference numeral 51 denotes a chain box that is grounded to the side of the row seedling transporting conveyor 50 described above, and the row seedling transporting conveyor 50 travels in conjunction with the grounding wheel of the transplanter via a transmission mechanism in the chain box 51. Reference numeral 52 denotes a sensor installed on the upper side of the row seedling transporting conveyor 50 facing one end of the seedling separating plate 36. The sensor 52 is the operation motor 46 and the hydraulic cylinder 3.
It is grounded to 1. Row separation and transposition of soil-grown seedlings by the device of the present invention having the above-described configuration are performed as follows. First, the collective seedling a is placed on the collective seedling supply conveyor 4, and the seedling pressing needles 21 are pierced into the soiled seedlings 5 of the front row row seedlings b by lowering the seedling pressing plate 22. On the other hand, the rod 32 of the hydraulic cylinder 31 is set to the most retracted state (that is, the seedling separating plate 36 is in the horizontal state),
Each seedling separating needle 45 is pulled out from each through hole 41 (chain line in FIG. 1). As the transplanter travels, the row and seedling transport conveyor 50 and the hydraulic cylinder 31 are driven. As the slide frame 29 moves forward along the guide rails 27, 27 due to the extension of the rod 32 of the hydraulic cylinder 31, the seedling separating plate 36 is rotationally displaced from the horizontal state to the standing state (see FIG. 2). ), Further forward with the standing state. At that time, the cam roller 34 axially supported by the slide frame 29 applies a pressing force to the passive piece 9 of the cam 8 to rotate the cam 8 (FIG. 3), at which time the electromagnetic clutch 7 is excited. Since it is set as described above, the row seedling transport conveyor 50 also travels to advance the collective seedling a. In this way, the space between the standing seedling separating plate 36 and the collective seedling a is narrowed, and finally the seedling separating plate 36 and the front row row seedling b are brought into close contact with each other. When the sensor 48 reaches a predetermined pressure receiving state due to this close contact, the signal releases the excitation of the electromagnetic clutch 7 and stops the driving of the hydraulic cylinder 31, and
The operation motor 46 is driven so that the seedling separating needles 45 are connected to the through holes 4
1 and insert into each soil-grown seedling 5 of the above-mentioned row seedling b (FIG. 4). When the insertion of each seedling separating needle 45 into each soil-attached seedling 5 reaches the set depth, the hydraulic cylinder 18 drives to raise the seedling holding plate 22 to move each seedling holding needle 21 to the front row row seedling. Extract from each soil-embedded seedling 5b. As a result, the seedling pressing plate 22 is rapidly returned to the position where the seedling pressing bracket 15 is engaged with the pin 24 by the spring 23, and immediately at that position, the hydraulic cylinder 18 lowers the seedling pressing plate 22 to cause each seedling pressing plate 22 to descend. The needle 21 is pierced into each soil-grown seedling 5 of the second row row seedling b of the collective seedling a. Then, as the hydraulic cylinder 31 starts to move back, the seedling separating plate 22 is retracted in the standing state, and the seedling separating needles 45 are inserted into the soil-bearing seedlings 5 and the row seedlings b in the front row are removed. , And is separated from the second row seedling b. The seedling separating plate 2 is moved by the subsequent return movement of the hydraulic cylinder 31.
No. 2 returns from the above-mentioned standing state to the horizontal state, reaches the original position above the row and seedling transport conveyor 50, and the preceding row seedling b is not placed on the receiving end of the row and seedling transport conveyor 50 by the sensor 52. When detected, the operation motor 46 is driven to simultaneously pull out the seedling separating needles 45 from the soil-bearing seedlings 5, whereby the row seedlings b in the front row are dropped and transferred to the receiving end portion of the row seedling transporting conveyor 50. To be done. At the same time, the hydraulic cylinder 31 extends the rod 32 to move the slide frame 29 forward, and repeats the series of operations described above.
The row seedlings b are sequentially transferred to the receiving end of and are continuously conveyed toward the sending end.

【The invention's effect】

As is clear from the above description, the present invention has the following effects. A seedling separating needle is inserted into each soil-grown seedling of the first row row seedling of the gathered seedling on the sending end of the gathered seedling supply conveyor, and a seedling pressing needle is inserted into each soil seedling of the second row row seedling. It is possible to reliably separate the first row seedlings from the second row seedlings by inserting the seedlings and retracting the seedling separation plate a little while keeping it standing. The first row of row seedlings still pierced by the seedling separating needle are transferred to the receiving end of the row seedling conveying conveyor by setting the seedling separating plate in a horizontal state, and then, onto the receiving end. By confirming that there is no preceding row seedling, and pulling out the seedling separating needle, the row seedling can be accurately dropped and transferred onto the receiving end of the row seedling transporting conveyor. Since the collective seedling supply conveyor is driven by the length of one pitch or more of the soil-bearing seedlings forming the collective seedling as a traveling unit, the conveyor may cause some slip between the collective seedlings. However, the first row of seedlings of the collected seedlings at the delivery end of the collective seedling supply conveyor is reliably detected by the sensor provided in the seedling separation plate, and therefore the above-described separation and transposition operations are performed accurately. .

[Brief description of drawings]

The drawings show an embodiment of the present invention,
And FIG. 4 is a side view in which one side frame is removed to show the operation state in stages, and FIG. 5 is a front view in a standing state of the seedling separating plate. a ... collective seedling, b ... row seedling, 4 ... collective seedling supply conveyor, 5 ... soil seedling, 21 ... seedling pressing needle, 36 ... seedling separating plate, 45 ... seedling separating needle, 48 ... … Sensor, 50 …… Conveyor conveyor for row seedlings.

Claims (1)

[Claims] 1. A collective seedling supply conveyor for intermittently driving a length of 1 pitch or more of soil seedlings forming a collective seedling as a traveling unit, and a receiving end portion in front of a sending end portion of the collective seedling supply conveyor. A plurality of row seedling conveying conveyors that are positioned, and each soil with a plurality of rows arranged and supported above the sending end of the above-mentioned collective seedling supply conveyor to form a second row of seedlings of the above-mentioned collective seedling. The seedlings are inserted into the seedlings, and when the second row seedlings reach the position of the first row, they are taken out to form new row seedlings reaching the position of the second row. The seedling pressing needle that moves above each soil-grown seedling and is stabbed in each soil-grown seedling, stands horizontally above the receiving end of the above-mentioned row seedling conveying conveyor, and stands in front of the delivery end of the above-mentioned seedling feeding conveyor. State,
A seedling separating plate equipped with a sensor for detecting the first row row seedlings of the collected seedlings on the delivery end of the above-mentioned seedling feeding conveyor in the standing state, and a large number of rows are supported by the seedling separation plate, When the seedling separating plate is in the standing state and the sensor detects the first row of seedlings, the seedling separating plate is pierced into each soil-grown seedling of the first row of seedlings, In the horizontal state and when there is no preceding row seedlings on the receiving end of the row seedling transport conveyor, exits from the soil seedlings, and the row seedlings on the receiving end of the row seedling transport conveyor. The seedling separating needle to be dropped and transferred, and the seedling pressing needle are pierced into each soil-attached seedling of the second row row seedling of the collective seedling, and the above-mentioned seedling separating needle is each soil of the first row row seedling. When the seedling separation plate is inserted into the attached seedlings, the seedling separating plate is slightly retracted in the standing state, so that the first row of seedlings is set to the second row. It has to be separated from the eyes of the column seedlings, seedlings with soil, characterized in that it consists city column separator reproduction apparatus.