TW201919469A - Transplanting tool - Google Patents

Abstract

This transplanting tool (20) is provided with: a holding member (31) provided so as to be capable of holding a nursery bed piece (N) in which a seedling (S) is planted; and a movable member (31) provided so as to be movable in a circumferential direction around an axial line (P) extending vertically through the lower surface of the nursery bed piece (N) from a position below the nursery bed piece (N).

Description

Migration tools

The invention relates to a transplanting tool provided on a transplanting device for seedlings.

Conventionally, a transplanting tool provided in a transplanting device for a seedling has been known as a seedbed holding unit described in Patent Document 1, for example. This seedbed gripping unit includes a first gripping member and a second gripping member that relatively rotate around an axis extending in the vertical direction. A first claw portion is provided at an upper end portion of the first gripping member. A second claw portion is provided at an upper end portion of the second holding member, and the second claw portion moves in the circumferential direction and contacts the first claw portion in accordance with the relative rotation of the first holding member and the second holding member. Further, in the above-mentioned seedbed holding unit, the first holding member and the second holding member are relatively rotated directly below the seedbed sheet of the transplantation target, and the lower part of the seedbed sheet is sandwiched between the first claw portion and the second claw. Between the parts, the first gripping member and the second gripping member are lowered from this state, and the seedbed piece is transplanted into the hole in the transplantation place.

Prior Art Literature Patent Literature Patent Literature 1: Japanese Patent Laid-Open No. 2016-7686

Problems to be Solved by the Invention However, the roots of the seedlings may spread radially outward on the lower surface of the seedbed sheet of the transplantation target. Therefore, when the first claw portion and the second claw portion are sandwiched into the lower part of the seedbed sheet, the first holding member and the second holding member are lowered, and the seedbed sheet is inserted from above the hole in the transplantation site into the hole in the transplantation site The front end of the root of the seedling will be caught between the inner peripheral surface of the hole and the side of the seed bed, and there is a possibility that it cannot be guided to the lower side of the hole.

The purpose of the present invention is to provide a transplanting tool, which can guide the roots of seedlings that extend from the lower surface of the seedbed sheet to the outside when the seedbed sheet is inserted into the hole at the transplantation place from the hole above the transplanted part for transplantation. To the underside of the hole at the transplant.

Means for Solving the Problems The following describes the means for solving the problems and their effects.

A transplanting tool for solving the above-mentioned problem is provided on a seedling transplanting device, and includes a grasping member and a moving member. The grasping member is provided to be able to grasp a seedbed piece on which the seedling is planted. The position of the lower side passes through the lower surface of the seedbed sheet, and moves in the circumferential direction with the axis extending in the vertical direction as a center.

According to this configuration, in a state where the seedbed piece grasped by the grasping member is inserted from the hole above the transplantation site to the hole at the transplantation site, if the moving member moves in the circumferential direction, the seedling roots become entangled in the moving member. on. Therefore, even if the front end of the root of the seedling is caught between the inner peripheral surface of the hole and the side of the seedbed sheet, the base end portion of the root is intertwined with the moving member moving in the circumferential direction than the front end. It will be pulled to the lower surface of the seedbed sheet near the center, and as a result, the root will be guided to the lower side of the hole.

In the transplantation tool, preferably, in a state in which the seedbed piece grasped by the grasping member is inserted from the hole above the transplantation site to the hole at the transplantation site, the moving member moves in the circumferential direction before descending .

According to this configuration, the moving member can effectively pull and guide the roots of the seedlings entangled by the movement in the circumferential direction to the lower side of the hole by moving downward.

In the transplantation tool, preferably, the moving member is one of a plurality of moving members, and the plurality of moving members are disposed at intervals in the circumferential direction.

According to this configuration, it is possible to increase the probability of root entanglement of the seedling by moving a plurality of moving members in the circumferential direction.

In the above-mentioned transplantation tool, it is preferable that the grasping member is configured to use the moving member and has a needle-shaped claw portion having a front end that faces the radial direction crossing the axis with the axis as a center. Direction, and toward the obliquely upward direction, the gripping member rotates so that the claw portion moves in the circumferential direction.

According to this configuration, since the grasping member and the moving member can both use the same member, the configuration of the transplantation tool can be simplified.

In the transplantation tool, it is preferable that a rotation angle of the grasping member when the claw portion is rotated on one side of the circumferential direction so that the seedbed sheet can be drilled is set smaller than when the claw portion is rotated by the claw portion. A rotation angle of the grasping member when the seedbed sheet is drilled from the state where the seedbed sheet is drilled to the other side in the circumferential direction to rotate away from the seedbed sheet.

According to this configuration, when the gripping member is rotated such that the claw portion of the gripping member abuts against the lower surface of the seedbed sheet of the transplantation target from below, the gripping member is rotated to one side in the circumferential direction, the needle-shaped and upwardly facing From the lower surface to the inside of the seedbed. In this way, the seedbed sheet appears to be grasped by the grasping member. On the other hand, the rotation angle of the gripping member is relatively large when the claw portion in the state of drilling the seedbed sheet is moved to the other side in the circumferential direction to rotate away from the seedbed sheet. The roots of the seedlings extending outwardly are easily entangled in the claws that move in the circumferential direction. Therefore, even if the front end of the root of the seedling is caught between the inner peripheral surface of the hole and the side of the seedbed sheet, as long as the grasping member is rotated in the direction in which the claw portion is separated from the seedbed sheet under the hole of the transplant, The roots of the seedlings intertwined on the claws are effectively guided to the lower side of the hole at the transplant.

Hereinafter, one embodiment of a transplanting tool provided on a transplanting device for transplanting seedlings of plants will be described with reference to the drawings.

As shown in FIG. 1, the transplantation device 11 includes a seedbed support portion 12, a planting plate support portion 13, and a transplantation mechanism 14. The seedbed support portion 12 and the planting plate support portion 13 include a conveyor mechanism, a chain mechanism, and the like that can move in at least one of the width direction (X direction) and the depth direction (Y direction) of the transplantation device 11. The planting plate support portion 13 is disposed below the seedbed support portion 12. The seedbed support portion 12 supports a mat-shaped seedbed 15 in which an assembly of seedbed pieces N in which seedlings S are planted is supported. The planting plate support portion 13 supports the planting plate 16, and the planting plate 16 is used for transplanting the seedbed piece N separated from the seedbed 15 by the transplantation mechanism 14. Among them, the seedbed 15 is an elastically deformable cushion body made of, for example, a foamed resin such as polyurethane, and is divided into a plurality of seedbed pieces N in a matrix form by a plurality of slits 17 extending in a width direction and a depth direction in a plan view. . Starting from the lower surface of each seedbed sheet N, the root Ne of the seedling S extends radially outward.

The planting plate 16 is a plate having a thickness corresponding to the height of the seedbed sheet N (the dimension in the Z direction). The planting plate 16 is formed with a plurality of holes 18 which become transplantation sites of the seedbed sheet N, respectively. The holes 18 penetrate the planting plate 16. There are five holes 18 in FIG. 1. Each hole 18 has a circular planar shape. The circle along the inner peripheral surface of the hole 18 corresponds to a square inscribed circle in the shape of one surface (for example, the bottom surface) of the seedbed sheet N having a substantially cubic shape. Therefore, when the seedbed piece N is inserted into the hole 18 from above the hole 18, the four corner portions of the seedbed piece N are elastically deformed in plan view and are pressed against the inner peripheral surface of the hole 18 to be held in the hole 18. Inside.

The transplantation mechanism 14 includes a box-shaped base portion 19, a transplantation tool 20 provided on the base portion 19, and a moving mechanism 21 that moves the transplantation tool 20 by the base portion 19. The moving mechanism 21 includes a first driving section 22, a second driving section 23, and a third driving section 24. The first driving portion 22 is disposed below the base portion 19 and extends in the X direction. The first driving unit 22 includes a first slider 25 that slides in the X direction. The second driving section 23 is arranged so as to extend in the Y direction while being connected to the first slider 25 provided on the first driving section 22. The second driving unit 23 includes a second slider 26 that slides in the Y direction. The third driving section 24 is arranged so as to extend in the Z direction while being connected to the second slider 26 provided on the second driving section 23. The third driving unit 24 includes a third slider 27 that slides in the Z direction. A base 19 is connected to a third slider 27 provided on the third driving portion 24.

As shown in FIGS. 2 and 3, the transplantation tool 20 includes a cylindrical portion 28 and a cylindrical rotating member 29. The cylindrical portion 28 is fixed to the upper surface of the base portion 19 so as to extend in the Z direction in the vertical direction. The rotating member 29 rotates around an axis P extending in the vertical direction through the center of the cylindrical portion 28 in a state of being disposed inside the cylindrical portion 28. The outer diameter of the cylindrical portion 28 is smaller than the inner diameter of the hole 18 formed in the planting plate 16. A straight rod-shaped rotation restricting member 30 having a needle-like tip is fixed to the upper end surface 28 a of the cylindrical portion 28 so as to extend point-symmetrically at two points with respect to the axis P in the conventional Z direction. Similarly, on the upper end surface 29a of the rotating member 29, a gripping member 31 having a needle-shaped front end is fixed at two points symmetrical with respect to the axis P as a reference. That is, the grasping member 31 is fixed at a position separated from the axis P in the radial direction on the upper end surface 29a of the rotating member 29, that is, at a plurality of intervals in the circumferential direction with the axis P as the center (two in this embodiment). ).

The portion of the grasping member 31 from the middle portion in the longitudinal direction to the base end side is constituted by the straight rod portion 32 extending in the Z direction. A portion of the grasping member 31 from the above-mentioned intermediate portion to the front end side is formed by a hook-shaped claw portion 33 that extends and bends. In addition, the grasping member 31 is fixed to the rotating member 29 with the needle-shaped tip of the claw portion 33 facing in a direction intersecting in a radial direction centered on the axis P, and facing obliquely upward. Therefore, when the rotating member 29 rotates, the grasping member 31 rotates integrally with the rotating member 29, and the claw portion 33 moves in the circumferential direction centered on the axis P. The upper end of the rotation restricting member 30 and the front end of the claw portion 33 of the upper end of the grasping member 31 have the same height position in the Z direction. In addition, the rotation member 29 is driven to rotate by a rotation driving portion 34 (see FIG. 1) constituted by a motor or the like provided on the base portion 19.

Next, the effects of the transplanting device 11 configured as described above will be described below focusing on the effects when the transplanting tool 20 grasps the seedbed sheet N and transplants the holes 18 into the planting plate 16.

When the seedbed piece N is separated from the seedbed 15 and transplanted to the planting plate 16, the seedbed piece N of the transplantation target is first selected, and the position of the hole 18 in the transplanting plate 16 in the planting plate 16 is aligned with the position directly below the seedbed piece N. . At this time, a conveyor mechanism and the like not shown in the seed bed support portion 12 and the planting plate support portion 13 are activated. Next, a transplantation tool 20 of the transplantation mechanism 14 is disposed at a position directly below the hole 18. At this time, the first driving section 22 and the second driving section 23 in the moving mechanism 21 are driven. FIG. 1 shows that the seedbed sheet N located in the center among the five seedbed sheets N arranged in the width direction (X direction) of the seedbed 15 is transplanted into the five holes 18 arranged in the width direction (X direction) of the planting plate 16 The central state of the hole at 18 o'clock in the initial state.

The migration procedure from this initial state will be described below.

First, as shown in FIG. 4, the transplantation tool 20 is raised from the position shown in FIG. 1 to a grasping position capable of grasping the seedbed sheet N. That is, according to the driving of the third driving unit 24 in the moving mechanism 21, the transplantation tool 20 is raised together with the base 19. Then, the cylindrical portion 28 and the rotating member 29 of the transplantation tool 20 pass through the holes 18 of the planting plate 16 from the bottom to the top. Then, the rotation restricting member 30 fixed to the upper end surface 28 a of the cylindrical portion 28 and the grasping member 31 fixed to the upper end surface 29 a of the rotating member 29 may contact the lower surface of the seedbed sheet N.

Specifically, as shown in FIG. 5, the rotation restricting member 30 is brought into contact with the lower surface of the needle-shaped front end drill seedling sheet N. The grasping member 31 is in a contact state in which the claw portion 33 with the front end inclined upward pushes the lower surface of the seedbed sheet N upward. Therefore, the seedbed sheet N is restricted from rotating about the axis P by the rotation restricting member 30 on the lower surface of the drill, and the pushing of the grasping member 31 causes the central part of the lower surface to be depressed toward the inner side of the seedbed sheet N on the upper side. . Then, from this state, the rotation member 29 is rotated by the driving of the rotation driving section 34. In the case of this embodiment, the rotation member 29 is rotated from the state shown in FIG. 3 to the counterclockwise direction of the gripping direction, for example, at a rotation angle of only 90 degrees.

Then, as shown in FIG. 6, FIG. 7, and FIG. 8, with the rotation of the rotating member 29, the grasping member 31 also moves in the counterclockwise direction to rotate only 90 degrees, and as a result, the claw portion 33 will be an axis As a center, P moves in a manner of drawing an arc toward one side of the circumferential direction (that is, the side opposite to the clock direction). Then, at this time, the claw portion 33 of the grasping member 31 will drill a concave portion of the lower surface of the seedbed sheet N. Among them, when the lower surface of the seedbed sheet N is pushed into the concave end of the claw portion 33 from the obliquely downward direction to the inside of the seedbed sheet N, the compression caused by the claw portion 33 in the seedbed sheet N will disappear and the concave surface The shape-like part will be elastically deformed as it recovers slightly downward. Therefore, for example, as shown in FIG. 7 and FIG. 8, the needle-shaped and upwardly inclined claw portion 33 in the grasping member 31 will penetrate the front end deep into the seedbed sheet N with the axis P as the center, whereby the seedbed sheet N will Moving the grasping member 31 in the up-and-down direction also results in a state where the grasping member 31 is grasped without being disengaged from the grasping member 31.

Next, as shown in FIG. 9, the transplant tool 20 is lowered to a position lower than the planting plate 16 by the driving of the third driving unit 24 in the moving mechanism 21. Specifically, the transplanting tool 20 is lowered to a transplanting position until the seedbed piece N grasped by the grasping member 31 is inserted into the hole 18 of the planting plate 16 from above the hole 18 of the planting plate 16. Next, from this state, the rotation member 29 is rotated by the driving of the rotation driving unit 34. This time, the rotating member 29 rotates in a counterclockwise direction to the gripping release direction of the grasping member 31 of the drill seedling sheet N from the seedling sheet N.

Then, as shown in FIG. 10, the claw portion 33 of the grasping member 31 is detached from the inside of the seedbed sheet N toward the lower surface side. Among them, FIG. 10 shows the state at the time point when the rotating member 29 is rotated clockwise from the state of FIG. 9 at a rotation angle of only 90 degrees, that is, the state where the claw portion 33 of the grasping member 31 has just detached from the seedbed sheet N , But will eventually rotate the rotating member 29 in a clockwise direction, for example, at a rotation angle of only 180 degrees. Then, even if the gripping member 31 moves in the circumferential direction, the rotation restricting member 30 extending upward from the fixedly arranged cylindrical portion 28 maintains a state in which the front end thereof drills the seedling sheet N from the lower surface of the seedling sheet N. Therefore, even if the seedbed sheet N is pressed or pulled by the grasping member 31 that moves in the circumferential direction, it does not rotate with the grasping member 31.

However, the root Ne of the seedling S planted in the seedbed sheet N of the transplantation target may extend radially outward from the lower surface of the seedbed sheet N to the outside. Therefore, when the seedbed piece N is inserted into the hole 18 of the planting plate 16 from above the hole 18 of the planting plate 16, as shown in FIG. 9, a part of the root Ne of the seedling S may be caught on the side of the seedling piece N and Doubts between the inner peripheral surfaces of the holes 18. Since the root Ne of the seedling S that is stuck in this way does not hang on the lower side of the planting plate 16, it cannot be immersed in the nutrient solution supplied for the cultivation of the seedling S on the lower side of the planting plate 16. Therefore, it is advisable to avoid such situations.

In this regard, in the present embodiment, when the rotating member 29 is rotated in the clockwise direction from the state of FIGS. 8 and 9, the grasping member 31 is positioned in a circumferential direction centered on the axis P at a position below the seedbed sheet N. The movement acts as a moving member, and during the movement in the circumferential direction, the root Ne of the seedling S expanding from the lower surface of the seedbed sheet N to the outside is wound. That is, the part of the root Ne of the seedling S that is sandwiched between the side surface of the seedbed sheet N and the inner peripheral surface of the hole 18 is entangled with the portion closer to the base end side than the front end and moved in the circumferential direction. Grab member 31. Then, the root Ne of the seedling S entangled with the grasping member 31 moving in the circumferential direction is drawn to the lower surface of the seedbed sheet N near the center, and as a result, it is guided to the lower side of the hole 18.

Next, as shown in FIG. 11, when the transplanting tool 20 is further lowered from this state, the root Ne of the seedling S wound around the grasping member 31 in the seedbed sheet N will come into contact with the grasping member 31 moving downward. The drooping way is concentrated. Then, in a state where the root Ne of the seedling S hangs on the lower side of the hole 18 of the planting plate 16, the transplantation of the seedbed sheet N to the hole 18 of the transplantation site is completed. Thereafter, from this state, the seedbed support portion 12 and the planting plate support portion 13 are moved so that the seedbed piece N of the next transplant target and the hole 18 of the transplantation place are aligned in the vertical direction. Then, the transplantation tool 20 is positioned at a position directly below the hole 18 to drive the first driving section 22 and the second driving section 23 in the moving mechanism 21. Then repeat the same transplantation sequence as above.

According to the above embodiment, the following effects can be obtained.

(1) Since the front end of the grasping member 31 is constituted by needle-shaped claws 33, when the seedbed sheet N is grasped, the root Ne of the seedling S grown from the seedbed sheet N is not caught and grasped. Concerns between component 31 and other components. Therefore, when the seedbed piece N is grasped for transplanting the seedling S, as long as the needle-shaped claw portion 33 at the front end drills the seedbed piece N, the grasping member 31 can be operated, and the seedbed piece N can be easily grasped and The root Ne of the seedling S will not be removed.

(2) When the gripping member 31 is rotated with the claw portion 33 of the grasping member 31 abutting the lower surface of the seedbed sheet N of the transplantation target from below, the needle-shaped claw portion 33 passes under the seedbed sheet N An axis P extending in the vertical direction from the surface moves in the circumferential direction as a center. Then, with this movement, the needle-shaped and upwardly facing claws 33 are drilled from the lower surface to the inside of the seedbed sheet N, so the seedbed sheet N is not pulled out of the root Ne of the seedling S by the grasping member 31, and Even if it moves up and down with respect to the grasping member 31, it will be in the state which will not be grasped so that it may detach from the grasping member 31.

(3) When the rotating member 29 rotates, the gripping member 31 moves in the circumferential direction, so that the claw portion 33 included in the gripping member 31 also moves in the circumferential direction. Therefore, the seedbed piece N of the transplantation target can be grasped and transplanted with a simple configuration without removing the root Ne of the seedling S.

(4) When the claw portion 33 moves in the circumferential direction along with the rotation of the gripping member 31, the rotation restricting member 30 can suppress the seedbed piece N from being pushed or pulled by the claw portion 33 moved in the circumferential direction to catch the claw portion 33. The taking member 31 rotates together.

(5) The grasping member 31 also functions as a moving member. When the seedbed piece N grasped by the grasping member 31 is inserted from the hole 18 above the transplantation site to the hole 18 of the transplantation site, When 31 moves in the circumferential direction, the root Ne of the seedling S is entangled with the grasping member 31. Therefore, even if the tip of the root Ne of the seedling S extending from the lower surface of the seedbed sheet N to the outside is stuck between the inner peripheral surface of the hole 18 at the transplant site and the side of the seedbed sheet N, the root Ne The part closer to the base than the front end is entangled on the grasping member 31 moving in the circumferential direction, and this Ne is pulled to the lower surface of the seedbed sheet N near the center, and as a result is guided to the lower side of the hole 18 .

(6) The grasping member 31, which also functions as a moving member, moves the transplanting tool 20 further downward, and can effectively pull and guide the root Ne of the seedling S intertwined by the circumferential movement. The lower side of the hole 18 at the transplant.

(7) By moving a plurality of grasping members 31 that also function as moving members in the circumferential direction, the root Ne of the seedling S can be entangled in the grasping members compared with the case where one grasping member 31 is provided. Chance on 31.

(8) Since the configuration of the grasping member 31 is the same as the moving member, the configuration of the transplantation tool 20 can be simplified.

(9) The rotation angle when the grasping member 31 rotates in the grasping release direction in which the claw portion 33 of the seedbed sheet N of the drill transplantation target is separated from the seedbed sheet N is relatively large. Therefore, the root Ne of the seedling S extending from the lower surface of the seedbed sheet N to the outside is easily entangled in the claw portion 33 that moves in the circumferential direction. Therefore, even if the front end of the root Ne is caught between the inner peripheral surface of the hole 18 and the side of the seedbed sheet N, as long as the grasping member 31 is detached from the seedbed sheet N under the hole 18 of the transplant site, Rotation in the direction can effectively guide the root Ne entangled in the claw portion 33 to the lower side of the hole 18 at the transplant site.

The above-mentioned embodiment can be modified as follows. In addition, the following modification examples can be appropriately combined.

As shown in the first modification shown in FIG. 12, the shape of the claw portion 33 of the grasping member 31 in the transplantation tool 20 may be a shape that is curved in a circular arc shape with the axis P as the center in plan view from above.

As shown in the second modification shown in FIG. 13, the shape of the claw portion 33 of the grasping member 31 in the transplantation tool 20 can also be a shape that is curved in a spiral shape with the axis P as the center when viewed from above.

The number of grasping members 31 in the transplanting tool 20 may be a number other than the second embodiment. For example, in the third modification shown in FIG. 14, the number of grasping members 31 can be four. The number of the grasping members 31 may be an odd number such as 1 or 3.

The number of the rotation restricting members 30 that drill the lower surface of the seedbed sheet N with the front end to restrict the rotation of the seedbed sheet N can also be a number other than the second embodiment. That is, the number of rotation restriction members 30 can also be 1 or 3 or more. Alternatively, the rotation restricting member 30 may be omitted.

In addition to the configuration in which the pair of grasping members 31 are integrated with the rotating member 29 so as to extend upward from the upper end surface 29 a of the rotating member 29, each of the grasping members 31 can be centered on the axis P in the circumferential direction. Posing by way of movement.

Regarding the rotation angle of the grasping member 31 when the claw portion 33 is rotated in the circumferential direction around the axis P as the center, the rotation of the grasping direction to the side when the claw portion 33 drills the seedbed piece N can also be performed. The angle is the same as the rotation angle toward the other side in the grasping release direction when the claw portion 33 is detached from the seedbed sheet N. Furthermore, the rotation angle at this time can also be an arbitrary angle other than 90 degrees or 180 degrees.

In addition to the movement of the grasping member 31 that rotates the claw portion 33 so that the claw portion 33 moves in the circumferential direction, it is also possible to drill the seedbed for the claw portion 33 to move from the outside in the radial direction to the inside in the radial direction. The operation of the sheet N captures the swinging movement of the member 31.

In the embodiment, the configuration of the grasping member 31 that grasps the seedbed sheet N during transplantation also acts as a moving member that moves in the circumferential direction so that the root Ne of the seedling S is wound when the claw portion 33 is detached from the seedbed sheet N. However, the grasping member 31 and the moving member may be constituted by separate members. For example, in addition to the first gripping member and the second gripping member in the seedbed gripping unit provided as a transplantation tool in the prior art transplanting device, a lower side of the seedbed piece N is additionally added to move the seedling S in the circumferential direction. Root Ne tangled moving member.

11‧‧‧ transplantation device

18‧‧‧ Hole

20‧‧‧ Migration Tools

29‧‧‧Rotating member

30‧‧‧ rotation restriction member

31‧‧‧Gripping member that also uses moving parts

33‧‧‧Claw

N‧‧‧ Seedbed

Ne‧‧‧root

P‧‧‧ axis

S‧‧‧ Seedlings

FIG. 1 is a partial cross-sectional front view showing the overall outline of a transplantation apparatus including a transplantation tool in an embodiment.

FIG. 2 is a perspective view of a transplantation tool.

FIG. 3 is a plan view of the transplantation tool.

FIG. 4 is a front view showing a state where the transplantation tool is raised to the grasping position.

FIG. 5 is a magnified cross-sectional view showing a highlight of the transplantation tool in FIG. 4.

FIG. 6 is a cross-sectional view showing a state where the gripping member is rotated from the state of FIG. 5 to the gripping direction.

Fig. 7 is a side view taken along line 7-7 in Fig. 6.

FIG. 8 is a plan view of the transplantation tool in the state of FIG. 6.

FIG. 9 is an enlarged enlarged cross-sectional view showing a transplantation tool lowered to a transplantation position.

FIG. 10 is a cross-sectional view showing a state where the gripping member is rotated from the state of FIG. 9 to the gripping release direction.

11 is a cross-sectional view showing a state where the transplantation tool is further lowered from the state of FIG. 10.

FIG. 12 is a plan view of a transplantation tool according to a first modification.

13 is a plan view of a transplantation tool according to a second modification.

14 is a plan view of a transplantation tool according to a third modification.

Claims (5)

A transplanting tool, which is arranged on a seedling transplanting device, is characterized by: Equipped with a grasping member and a moving member, The grasping member is configured to be able to grasp seedbed pieces planted with seedlings, The moving member is provided to be able to pass through the lower surface of the seedbed sheet at a position on the lower side of the seedbed sheet, and to move in a circumferential direction with an axis extending in the vertical direction as a center. The migration tool according to claim 1, wherein In a state where the seedbed piece grasped by the grasping member is inserted from above the hole in the transplantation site to the hole in the transplantation site, the moving member moves in the circumferential direction before descending. The migration tool according to claim 1, wherein The moving member is one of a plurality of moving members, The plurality of moving members are disposed at intervals in the circumferential direction. The transplantation tool according to any one of claims 1 to 3, wherein The grasping member is configured to use the moving member and has a needle-shaped claw portion. The claw portion has a front end facing a direction intersecting with a radial direction having the axis as a center and facing an oblique upward direction, The grasping member rotates so that the claw portion moves in the circumferential direction. The migration tool according to claim 4, wherein The rotation angle of the grasping member when the claw is moved to one side of the circumferential direction to drill the seedbed sheet is set to be smaller than a state when the seedbed sheet is drilled from the claw part. The rotation angle of the grasping member when moving to the other side in the circumferential direction to rotate away from the seedbed sheet.