JPH05328856A - Raising seeding vessel - Google Patents

Abstract

PURPOSE:To provide the raising seedling vessel equipped with a member permitting to hold raised seedling blocks on a transplanter in the upright posture, to take out the seedling blocks as such in the downward directed state and to plant the seedling blocks. CONSTITUTION:A seedling-holding frame 3 having many seedling-gripping members 4 forming raising seedling compartments together with the pots are detachably attached to the upper surface of a seedling tray 1 having many pots 2. Each of the seedling gripping members elastically grip the outer circumferential surface of the upper end of the seedling block P in the raising seedling compartment, and the seedling-holding frame is detached from the seedling tray in the state holding the seedling blocks.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling raising device for raising seedling blocks, which are soil-bearing seedlings to be transplanted to a field using a transplanter.

[0002]

2. Description of the Related Art Generally, the above seedling block, which is also referred to as potted seedling, is placed on a transplanter together with a seedling tray of a seedling raising device, and the seedling block is taken out from each pot of the seedling tray and planted in a field. The pot of the seedling tray may be a bottomless one, but even so, the seedling block and the pot are in the shape of an inverted truncated cone (cone or pyramid) and the seedling block is completely inside the pot. The seedling block cannot be taken out from the bottom of the pot because it is stored in. For this reason, for example, as shown in Japanese Patent Publication No. 57-22288, the seedling tray is moved along a transport path having a lead diameter passage portion on the transplanter, or Japanese Patent Publication No. 56-78509 and Japanese Unexamined Patent Publication No. 1-78509. As shown in Japanese Patent Publication No. 141513, the seedlings are placed along a vertical direction on a transplanter, and the seedling block is pushed from the bottom side of the pot by a seedling pushing rod under a state where the pot of the seedling tray is in a substantially horizontal posture. The seedling block is pushed out from the tray in a substantially horizontal direction and discharged.

The seedling block thus pushed out horizontally from the seedling tray is planted in a field after changing its posture from a horizontal posture to an upright posture. Since a certain height is required for this posture change, the position of the center of gravity of the transplanter is raised in the mounting portion of the seedling tray, and a complicated posture changing mechanism is required, which makes the transplanter expensive and
Since the seedling block is moved along the long path for changing the posture, it takes time from extrusion to planting, resulting in poor efficiency, but the seedling block easily collapses.

[0004]

SUMMARY OF THE INVENTION Therefore, the main object of the present invention is to make a seedling block that can be placed on a transplanter while holding the seedling block after raising seedlings on a member of the seedling raising device. It is an object of the present invention to provide a novel seedling raising device capable of solving the above-mentioned various problems all at once by holding the plant in an upright posture, taking it out downward, and planting it in a field.

[0005]

The seedling raising apparatus of the present invention developed for that purpose has a large number of pots 2 arranged in a matrix as illustrated in FIGS. 1-3, 4, 5, and 6, respectively. It has a seedling tray 1 having it, and a large number of seedling gripping portions 4 which are combined with the pot on the upper end side of the pot 2 to form a seedling raising section and elastically grip the outer peripheral surface of the upper end portion of the seedling block in the seedling raising section. The seedling holding frame 3 is detachably attached to the upper surface of the seedling tray 1.

The outline shapes of the pot 2 and the seedling holding portion 4 are preferably inverted truncated pyramid trapezoidal shapes as illustrated in FIGS. 1, 4 and 5, respectively. However, as illustrated in FIG. 6, the pot 2 may have a columnar outline. In the former case, as shown in FIG.
The inclination angle β of the seedling holding part 4 may be larger than the inclination angle α of. The seedling tray 1 is preferably provided with an appropriate number of legs 1e facing a position lower than the pot 2.

Further, the present invention provides a seedling raising apparatus as described above with reference to FIG.
Seedling aid 6 for seedling separation as illustrated in FIG.
It is also proposed to provide a seedling separation auxiliary tool 8 as illustrated in FIGS. 14 and 15, respectively. Figure 7-11
The auxiliary tool 6 has a plurality of pressing members 7 arranged in an array so that they can face the row of pots formed by the pot 2 from the lower surface side of the seedling tray 1.
Is pressed to cause deformation inward. Each of the auxiliary tools 8 of FIGS. 12-14 and 15 is configured to have a large number of pushing rods 9 that can be projected into the pot 2 through the opening 2a formed in the bottom of the pot 2.

[0008]

The seedling raising apparatus according to the present invention has the seedling holding frame 3 shown in FIG. 1 and the seedling holding frame 3 separated from the seedling tray 1 as shown in FIG. 3 is attached to the upper surface of the seedling tray 1, and the seedling-growing section formed by the combination of the pot 2 and the seedling-holding portion 4 is filled with cultivating soil to suppress the seedling, and the seeds are sown and used for raising seedlings. When the seedling tray 1 is provided with the legs 1e, each pot 2 floats above the floor surface, and a space is secured below it. Since the conventional seedling tray was supposed to be placed on the transplanter as it is, the legs as described above were not provided, and a tall tree etc. was placed under the seedling tray to secure a space and growth of roots protruding below the pot was possible. Although it was supposed to be blocked by contact with air, the structure provided with the leg portion 1e ensures a required space. In each of FIGS. 1 and 4-6, a seedling block P after raising seedlings is shown for one seedling raising section. When the seedling raising to the desired growth state is completed in this way, the seedling holding frame 3 is removed upward from the seedling tray 1 while the seedling holding portion 4 elastically grips the outer peripheral surface of the upper end portion of the seedling block P. When the seedling holding frame 3 holding a large number of seedling blocks P is placed in the transplanter in a horizontal position as illustrated in FIGS. 16 and 19, the seedling block P exposes the lower portion in the pot 2. Take an upright position. Therefore, by grasping and pulling the exposed lower part of the seedling block P or pushing the seedling block P from the upper surface side,
As shown in FIG. 16, the seedling block P is taken out downward from the seedling holding frame 3 in the upright posture while elastically slightly expanding the seedling holding portion 4 from the seedling block holding state of FIG.
As shown in 0 and 21, it can be moved downward as it is and planted in the field.

When the seedling-separating assisting tool 6 illustrated in FIGS. 7-11 is provided on the seedling raising device, the pot 2 is deformed toward the inside by pressing with the pressing member 7 as illustrated in FIG. 9 after seedling raising. As a result, when the pressing member 7 is removed from the pot 2 and the pot shape is restored, a slight depression is caused on the peripheral surface of the seedling block P, and as shown in FIG. Voids are created, which is why
As illustrated in FIG. 1, when removing the seedling holding frame 3 from the seedling tray 1, it is easy to separate the seedling block P from the pot 2,
It becomes easy to remove the seedling holding frame 3 while holding the seedling block P as required. 12-14 or FIG.
When the auxiliary tool 8 for seedling separation illustrated in FIG.
4 or as shown on the right side of FIG. 15, the seedling block P is pushed upward from the pot 2 by pushing the pushing rod 9 into the pot 2, whereby the seedling holding frame 3 and the seedling block P are placed together. Can be easily removed from.

[0010]

EXAMPLE FIGS. 1-3 show a first example, in which a relatively rigid seedling tray 1 and a relatively elastic deformable member each made of an appropriate synthetic resin into a substantially plate-like shape are used. As shown in FIG. 2, the rich seedling holding frame 3 is provided by arranging a large number of the pots 2 and seedling gripping portions 4 each formed in an inverted quadrangular pyramid shape in a matrix. In order to position the seedling holding frame 3 with respect to the seedling tray 1, a positioning pin 1a is provided on the upper surface of the seedling tray 1 and a positioning through hole 3a for fitting the pin 1a is provided in the seedling holding frame 3. is there. In order to fix the attachment state of the seedling holding frame 3 to the seedling tray 1, an appropriate number of clips 1b are integrally formed on the upper peripheral edge of the seedling tray 1 so that the peripheral edge of the seedling holding frame 3 is gripped. .. The seedling tray 1 is also provided with a handle 1c projecting at the center of both ends in the length direction, only one of which is shown in FIG. The leg portions 1e are provided at four corners of the seedling tray 1. The seedling holding frame 3 has a series of engaging holes 3b at both ends in the lateral width direction.

As shown in FIG. 1, the seedling tray 1 has a stepped fitting portion 1d arranged between the pots 2 on the upper surface thereof, and a fitting groove 3c which is fitted on the fitting portion 1d. Is provided on the lower surface of the seedling between the seedling gripping portions 4. As shown in FIGS. 1 and 3, an opening 2a is provided at the bottom of the pot 2, and notches 4a for enhancing elasticity of the seedling holding portion 4 are provided at four corners of the seedling holding portion 4. Seedling tray 1 and seedling holding frame 3
Are assembled as shown in Figures 1 and 3 and used for raising seedlings.
After that, the seedling holding frame 3 is removed from the seedling tray 1 together with the seedling block P after raising seedlings, as described above.

FIG. 4 shows a second embodiment. In this embodiment, the pot 2 and the seedling holding portion 4 which are formed to have an inverted quadrangular truncated pyramid or inverted truncated cone shape, The inclination angle β of the seedling grasping portion 4 is set to be larger than the inclination angle α of the pot 2. By making the angle β relatively large, the seedling holding frame 3 for holding the seedling block P after raising seedlings is placed on the transplanter in the above-mentioned mode,
The phenomenon that the seedling block P elastically gripped by the seedling gripping portion 4 is slightly slid down due to the vibration of the machine body is reliably prevented.

FIG. 5 shows a third embodiment. In this embodiment, a similar contour is formed in the upper end portion of the pot 2 which is formed in the shape of an inverted quadrangular truncated pyramid or an inverted truncated cone. The seedling-holding part 4 that it has is supposed to be fitted. Further, in the first and second embodiments, the portion corresponding to the step fitting portion 1d provided on the upper surface portion of the seedling tray 1 does not have a step portion, and the inner bottom surface of the fitting groove 3c of the seedling holding frame 3 By abutting against the lower surface of the seedling holding frame 3, the shape is simplified and the molding is facilitated. As shown for the rightmost seedling-growing section in FIG. 5, the seedling block P has a stepped portion that abuts against the lower edge of the seedling holding portion 4, but as described above, the seedling block P is downward from the seedling holding portion 4. There is no inconvenience because it is intended to be taken out in the direction.

FIG. 6 shows a fourth embodiment. In the present embodiment, the seedling holding portion 4 is formed to have an inverted quadrangular pyramid or inverted truncated cone shape, whereas the seedling tray is shown. 1
The pot 2 is formed to have a rectangular or cylindrical profile. When the pot 2 has a pillar-shaped outline, when removing the seedling block P after raising the seedling together with the seedling holding frame 3, the pot 2 is removed.
Although the seedling block P is difficult to separate from the pot, the seedling block P can be reliably and easily separated from the pot 2 by using the seedling separating auxiliary tool 6 or 8 as described above. According to this embodiment, since the lower part of the seedling block P has a prismatic or cylindrical shape, when the lower part of the seedling block P is grasped with a holding tool such as a nail on the transplanter and pulled out downward. The holding force of the holding tool is evenly applied.

FIG. 7 shows the above-mentioned auxiliary tool 6 for separating seedlings, and FIGS. 8-11 illustrate the usage thereof. The auxiliary tool 6 is an outer frame 6 having a size that can be externally inserted into the seedling tray 1 shown in FIG.
A plurality of pressing members 7 that have a and can be made to face between the vertical rows of the pots 2 of the seedling tray 1 are bridged between the frame bodies at both longitudinal ends of the outer frame 6a. In the illustrated example, a pipe is used as the pressing member 7, but a solid rod, a roller or the like may be used. The usage is as described above, and after the seedling raising period has expired, first, as shown in FIG. 8, the seedling tray 1 equipped with the seedling holding frame 3 is fitted into the frame 6a of the auxiliary tool 6 from above, and then, as shown in FIG. As shown in FIG. 3, the seedling tray 1 is pushed down together with the seedling holding frame 3 to deform the pot 2 and the seedling block P as described above. The handle 1c of the seedling tray 1 also serves as a stopper that regulates the amount of depression by contact with the upper edge of the frame 6a. Thereafter, as shown in FIG. 10, by removing the pot 2 from the pressing member 7 and restoring the shape, a slight gap is generated between the inner surface of the pot and the peripheral surface of the seedling block, and thus the seedling holding for each seedling block P shown in FIG. As described above, the frame 3 can be easily removed.

FIG. 12 shows the above-mentioned auxiliary tool 8 for separating seedlings.
13 and 14 illustrate its use. Book aid 8
Is a plate-like body having upwardly protruding standing edges 8a at both ends in the longitudinal direction, and a large number of the pushing rods 9 arranged in a matrix.
It is supposed to be attached by welding. Standing edge 8a
Is arranged at a position where it comes into sliding contact with the outer surfaces of both ends of the seedling tray 1 in the longitudinal direction, and as shown in FIG. 14, the push rod 9 is pushed into the pot 2 by contacting the lower surface of the handle 1c of the seedling tray 1. It has a height dimension that regulates the quantity. The method of using the present auxiliary tool 8 is also as described above, and under the state where the clip 1b is removed from the seedling holding frame 3 as shown in FIG. 13, the pushing rod 9 is opened in the pot 2 as shown in FIG. The seedling holding frame 3 is removed by pushing the seedling block P through the pot 2a and pushing the seedling block P out of the pot 2.

FIG. 15 shows a modified example of the seedling separating auxiliary tool 8. This auxiliary tool 8 has a pot receiver 10 capable of receiving the lower end portion of the pot 2 in a fitted state. The extrusion rod 9 fixed by welding to a plate-like body similar to that shown in FIG.
It has a head 9a at the upper end that is inserted into the inside of the pot and holds the pot receiver 10 in place. The pot receiver 10 is urged to move upward by a coil spring 11 arranged on the outer circumference of the pushing rod 9. As shown on the left side of FIG. 15, the lower end portion of the pot 2 is received by the pot receiver 10. From this state, the seedling tray 1 is pushed down together with the seedling holding frame 3 to push out the pushing rod 9 as shown on the right side of FIG. When the seedling block P is pushed into the pot 2, the head 9a pushes the seedling block P out of the pot 2, and at the same time, the seedling holding frame 3 is removed upward.

The advantages of the seedling raising device of the present invention will be described below with reference to examples of use in a transplanter. FIG. 16 shows a transplanter configured as a self-propelled type. The transplanter includes front wheels 13 and rear wheels 14 for left and right pairs, and an engine 15 is mounted on the front part of the body. A mission case 16 is connected to the rear of the engine 15, and left and right chain cases 17 are attached to both sides of the mission case 16. The chain wheels 17 are attached to the ends of the chain case 17. The transplanter is made to run by driving the left and right rear wheels 14. Reference numeral 18 denotes a steering handlebar extended upward and rearward from the body. This transplanter runs the front and rear wheels 13 and 14 in the groove between the ridges R formed in the field, forms the groove G in the center of the ridge R, and transplants the seedling block P into the groove G. It is said that the required transplantation will be performed by covering the soil.

As shown in FIGS. 16 and 17, in the transplanter, the steering handle 18 is provided from above the front end of the mission case 16.
A seedling stand 20 whose rear end is inclined upward and rearward is provided so as to be able to reciprocate left and right. The seedling holding frame 3 holding the seedling block P is placed on the seedling mounting table 20 so as to be movable back and forth. That is, the seedling mount 20
Has a proper number of guide rods 20a between the front and rear edges of the frame defining the peripheral edge thereof, and the front end is supported by a horizontal rail 21 provided on the machine frame. A pair of vertical conveying belts 22 are provided on the left and right sides of the front half of the seedling mounting table 20, and the seedling holding frame 3 engages the conveying claws 22a of the vertical conveying belts 22 with the engaging holes 3b on both sides. In this state, the guide rod 20a is placed on the seedling placing table 20.
The position W shown in FIG. 17 is the seedling take-out position from the seedling holding frame 3, and each seedling holding part 4 that holds the seedling block P in the seedling holding frame 3 is laterally fed to the seedling mounting table 20 at the same position W. And the vertical feeding of the seedling holding frame 3 on the seedling mounting table 20 are sequentially brought.

Below and above the seedling taking-out position W shown in FIG. 17, seedling taking claws 24 and seedling pushing rods 25 shown in FIGS. 16 and 18 are provided. Of these, the seedling picking claw 24 is equipped with a rotary case 28 that rotates integrally with the transmission shaft 27 at the rear end of the chain case 26 that is attached to the mission case 16 and extends rearward.
A rotary arm 30 which rotates integrally with a rotary shaft 29 protruding outside the case 28 by a transmission mechanism (not shown) in the case 8.
Is provided and is supported by the rotary arm 30.
That is, as shown in FIG. 19, a base plate 31 is supported at the end of the rotary arm 30 so as to be rotatable around a horizontal support shaft 50.
The base plate 31 supports a pair of claws 24a rotatable around a pair of vertical fulcrum shafts 32, and the claws 24a are opened and closed to sandwich and release the seedling block P. 24 are configured. The seedling picking claw 24 is opened by the coil spring 32 arranged between the claw bodies 24a.
It is supposed to be closed by operating a cam 33 attached to the base end of a by a pneumatic cylinder 34.

As shown in FIGS. 16 and 18, a chain case 37 facing upward and rearward is raised from the end of a horizontal transmission case 36 attached to the chain case 26 on the front side of the rotary case 28. Side feed case 3 at the end
8 is attached. As shown in FIGS. 16-18, a chain case 39 extending forward is attached to the transverse feed case 38, and a rising case portion 39a is provided at the base end of the chain case 39. Then, a lateral transmission case 40 is attached to the rising case portion 39, and the transmission case 40
The seedling pushing case 41 is attached to the case 41, and the case 41 is equipped with the seedling pushing rod 25 facing above the seedling taking-out position W.

As shown clearly in FIG. 17, the transverse feed case 3
A reciprocating feed screw 43, which is rotationally driven in 8, is provided along the left-right direction, and the seedling mounting table 20 is attached to the left-right 1
By screwing the pair of nut members 20b into the reciprocating feed screw 43,
As is well known in rice transplanters, it is supposed to be reciprocally traversed. Further, a vertical feed shaft 44 which is rotationally driven in the front end portion of the chain case 39 is provided along the left-right direction, and drive cams 45 are attached to both ends of the vertical feed shaft 44 and both vertical conveyance belts 22 are driven. A pair of left and right driven cams 47 are attached to the transport belt drive shaft 46 for driving the vertical transport belt 22 at each lateral feed end of the seedling mounting table 20 as well known in the rice transplanter, and thus the seedling holding frame 3 is set. It is supposed to vertically convey a predetermined amount toward the rear. The seedling pushing rod 25 has a cam mechanism (not shown) driven by the transmission shaft 48 in the transmission case 40 provided in the seedling pushing case 41, like the seedling pushing rod provided between the planting claws of the rice transplanter. In addition, the upper surface of the seedling block P located at the seedling take-out position W is pushed by being caused to project only at a predetermined time.

The rotary case 28 is rotated around the transmission shaft 27 together with the transmission shaft 27 in the counterclockwise direction as shown by an arrow A in FIG. 19, whereby the seedling taking pawl 24 is moved through the rotary arm 30. It is supposed that after descending from the ascending end position of FIG. 19 to the descending end position of FIG. 21, it is again raised to the ascending end position of FIG. The rotary arm 30 is supposed to be rotated once clockwise with the rotary shaft 29 as shown by an arrow B in FIG. 19 while the rotary case 28 is rotated once. The postures of the plate 31 and the seedling picking claw 24 are maintained in a horizontal posture. For this reason, FIGS.
As shown in FIG. 5, a vertical guide rail in which an arm 51 that rotates around the horizontal fulcrum shaft 50 is attached to a base plate 31, and a guide roller 52 is provided at the end of the arm 51, and the guide roller 52 is fixed to a machine frame. It is supported by 53. The seedling picking nail 24 also has a seedling pushing plate 5 located between the nail bodies 24a.
4 is also provided, and the seedling pushing plate 54 is designed to be moved by the pneumatic cylinder 55 so as to project toward the tip of the seedling taking claw 24.

As shown in FIGS. 16 and 18, a vertical seedling guiding frame 58 having a U-shape in plan view and having a rear end opened is fixedly supported on the chain case 26 through a stay 57. A groove cutting tool 59 for forming the groove G is integrally formed on the front surface of 58. A pair of left and right crushing rollers 60 supported by the machine frame are provided on the rear side with a proper distance from the seedling guide frame 58. In FIG. 16, reference numeral 61 is a compressor for supplying compressed air to the pneumatic cylinders 34 and 55, which is installed on the outer surface of the transmission case 16 so as to be driven from within the case 16.

At the time of transplanting work by the transplanter described above, the nail bodies 24a are first provided on both sides of the seedling block P at the seedling take-out position on the lower surface side of the seedling holding frame 3 at the rising end position of FIG. Seedling nail 24 that is supposed to face,
The pneumatic cylinder 34 is actuated to close the seedling block P for clamping. In order to secure the nipping of the seedling block P, the seedling taking claw 24 is temporarily stopped at the rising end position by stopping the rotation of the rotary case 28. Next, by restarting the rotation of the rotary case 28 in the direction of the arrow A, the descending of the seedling picking claw 24 is started, and at the same time, the seedling pushing rod 25 is moved to be pushed to press the upper surface of the seedling block P. While the seedling holding part 4 is slightly opened by the pulling force and the pushing force applied to the block P, the seedling block P is pulled out downward from the seedling holding part 4 in the upright posture as shown in FIG. By continuously lowering the seedling picking nail 24,
As shown in FIG. 20, the seedling taking claw 24 descends while maintaining a horizontal posture to reach the descending end position of FIG. Even at this lower end position, the rotary case 28 is temporarily stopped by stopping the rotation, and during the stop, air pressure is removed from the air pressure cylinder 34 to open the seedling taking pawl 24 by the action of the compression spring 32 to hold the seedling block P. At the same time as releasing, the pneumatic cylinder 55 is operated to activate the seedling pushing plate 54.
Is pushed out to push the seedling block P into the seedling guiding frame 58. The seedling block P is released at a position close to the field scene and the groove G is released.
It falls inwardly in an upright posture, and is covered with soil by the pressure suppression action of the ridge R by the pressure suppression roller 60 as the machine body advances. By rotating the rotary case 28 in the direction of arrow A and the rotary arm 30 in the direction of arrow B, the seedling taking claws 24 are raised in a horizontal position, and seedling blocks to be planted next have already been sent. It can be raised just below the take-out position.

The seedling block thus raised with the seedling raising device according to the present invention is taken out from the seedling tray 1 while being held by the seedling holding frame 3, and the seedling holding frame 3 is placed in a horizontal posture on the transplanter to stand upright. With such a posture, the seedling gripping portion 4 can be pulled out downwards or pushed out, or can be taken out by both means and moved to the field scene in an upright posture for planting. Like the transplanter in the example shown in the figure, it is possible to use a seedling picking claw that grabs the lower part of the exposed seedling block P and descends to near the field scene for planting, or grab the seedling block and pull it out immediately. Alternatively, the seedling block can be taken out by simply pushing it out and planted in the field by free fall. In that case, a vertical guide tube or the like for guiding the seedling block in an upright posture may be provided.

[0027]

As is apparent from the above description, in the seedling raising apparatus of the present invention, the seedling holding frame 3 having the seedling holding portion 4 forming the seedling raising section together with the pot 2 of the seedling tray 1 is combined with the seedling tray 1 to raise seedlings. The outer peripheral surface of the upper end portion of the subsequent seedling block P is held by the seedling holding frame 3 while being elastically gripped by the seedling gripping portion 4, and can be separated from the seedling tray 1.
The seedling block thus separated from the seedling tray 1 is elastically held by the seedling holding frame 3 with the lower part exposed, so that the seedling holding frame 3 holding a large number of seedling blocks is transplanted in a horizontal posture. The seedling block in the upright posture can be taken out downward while keeping the posture as it is, while elastically slightly expanding the seedling holding part 4, and can be moved to the field scene and planted in that posture. Therefore, according to the present invention, there is no need to change the posture of the seedling block on the transplanter, and the seedling holding frame 3 is placed at a low level position on the transplanter to lower the center of gravity and ensure stable running performance of the transplanter. In addition to eliminating the complicated posture changing mechanism, the cost of the transplanter can be reduced, the transfer efficiency of the seedling block can be greatly improved by minimizing the movement path of the seedling block, and the seedling collapse can be minimized to ensure a stable transplantation state. , And the resulting improvement in the quality of the crop.

When the pot 2 and the seedling holding part 4 each have an inverted truncated pyramid trapezoidal shape (claim 2), the seedling block after raising seedlings is separated from the pot 2 while being held by the seedling holding frame 3. The work of doing so does not become difficult, and in addition to that, the seedling holding part 4
If the inclination angle is set to be larger than that of the pot 2 and the inclination angle is set to be relatively large (claim 3), the tendency of the seedling block to slide down due to vibration in the seedling gripping portion 4 is greatly reduced. If the pot 2 has a pillar-shaped contour (claim 4), the lower part of the seedling block P becomes a pillar-shaped portion, and the seedling holding means such as the above-mentioned seedling picking nail 24 is used to hold the seedlings. When the seedling block is pulled out from the frame 3, the clamping pressure is uniformly applied to improve the clamping property.

The leg portion 1e as defined in claim 5 is attached to the seedling tray 1.
In addition, if the seedling tray is not intended to be placed on the transplanter and the legs are provided, it does not interfere and is formed to have a relatively high rigidity so that it does not interfere with the seedling tray. Suppression of the soil in the inside and subsequent sowing work can be performed while the seedling raising device is stably supported by the legs 1e, and the seedling growth in the seedling raising section is improved by avoiding the root protruding to the lower part of the pot. The space under the pot is leg 1e
Will be provided as is.

As described above, it is easy to remove the seedling holding frame 3 for holding the seedling block after raising the seedlings from the seedling tray 1 by the seedling separating aids 6 and 8 according to claims 6 and 7. Is.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing a part of the first embodiment, the vertical cross section being taken along the line I-I of FIG.

FIG. 2 is a perspective view showing a state in which a seedling tray and a seedling holding frame of the first embodiment are separated.

FIG. 3 is a plan view showing a part of the first embodiment.

FIG. 4 is a longitudinal sectional view showing a part of the second embodiment.

FIG. 5 is a vertical cross-sectional view showing a part of the third embodiment.

FIG. 6 is a vertical cross-sectional view showing a part of a fourth embodiment.

FIG. 7 is a perspective view showing an example of a seedling separating auxiliary tool attached to a seedling raising device.

FIG. 8 is a vertical cross-sectional view showing how to use the auxiliary tool of FIG.

9 is a vertical cross-sectional view showing how to use the auxiliary tool of FIG.

FIG. 10 is a vertical cross-sectional view showing how to use the auxiliary tool of FIG.

FIG. 11 is a vertical cross-sectional view showing a state in which the seedling holding frame is removed from the seedling tray after using the auxiliary tool of FIG.

FIG. 12 is a perspective view showing another example of a seedling separating auxiliary tool attached to a seedling raising device.

13 is a vertical cross-sectional view showing how to use the auxiliary tool of FIG.

FIG. 14 is a vertical cross-sectional view showing a method of using the auxiliary tool of FIG.

FIG. 15 is a vertical cross-sectional view showing a modified example of the auxiliary tool of FIG. 12 together with its usage.

FIG. 16 is a partially cutaway side view showing an example of a transplanting machine adapted to transplant seedlings raised by the seedling raising device of the present invention.

17 is a perspective view of a portion of the implanter of FIG.

18 is a perspective view of a portion of the implanter of FIG.

19 is a vertical cross-sectional side view showing a main part of the transplanter of FIG.

20 is a side view for explaining the operation of the transplanter of FIG.

FIG. 21 is a side view for explaining the operation of the transplanter of FIG.

[Explanation of symbols]

 1 Seedling tray 1b Clip 1e Leg part 2 Pot 2a Opening 3 Seedling holding frame 4 Seedling gripping part 6 Seedling separation aid 7 Pressing member 8 Seedling separation aid 9 Extrusion rod P Seedling block

Claims (7)

[Claims] 1. A seedling tray (1) having a large number of pots (2) arranged in a matrix, and a seedling-growing section which is combined with the pot at the upper end side of the pot to form a seedling-growing section, A seedling raising device comprising a seedling holding frame (3) detachably attached to the upper surface of the seedling tray, which has a large number of seedling gripping portions (4) for elastically gripping the outer peripheral surface of the upper end portion. 2. The seedling raising apparatus according to claim 1, wherein the pot (2) and the seedling gripping portion (4) each have an inverted truncated cone trapezoidal contour. 3. The seedling raising device according to claim 2, wherein the inclination angle of the seedling gripping portion (4) is larger than the inclination angle of the pot (2). 4. The pot (2) is formed to have a columnar outline, and the seedling gripping portion (4) is formed to have an inverted truncated cone truncated cone outline. Item 1
Nursery equipment. 5. An appropriate number of legs (1) facing the seedling tray (1) to a position below the pot (2).
The seedling raising device according to any one of claims 1 to 4, which is provided with e). 6. A plurality of pressing members (7) are arranged in an array so that they can be faced from the lower surface side of the seedling tray (1) to the row of pots formed by the pot (2), and the pots are pressed by the pressing members. The seedling raising device according to any one of claims 1 to 5, further comprising a seedling separating auxiliary tool (6) for pressing the pot between rows to cause deformation inward. 7. A seedling separating aid (8) having a large number of push rods (9) that can be inserted into the pot through an opening (2a) formed in the bottom of the pot (2). The nursery device according to any one of 1 to 5.