JP2002017123A - Device for taking out seedling of transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely take out seedlings from a seedling tray with seedling takeout claws and transfer the seedlings without dropping the seedlings. SOLUTION: This device for taking out the seedlings of a transplanter is equipped with a pair of seedling takeout claws 41 capable of thrusting into a pot part P of a seedling tray T and a guide tool 51 for guiding the pair of the seedling takeout claws 41 so as to narrow the interval between the pair of the seedling takeout claws 41 by relatively retreating when the seedling takeout claws 41 are thrust into the pot part P. The seedling takeout claws 41 are provided with an urging member 49 for urging the pair of the seedling takeout claws 41 in the direction to narrow the interval of the pair of the claws 41 and a gap t1 for permitting the extension and contraction of the interval between the pair of the seedling takeout claws 41 is formed between the guide tool 51 and the seedling takeout claws 41.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling removing device for a transplanter.

[0002]

2. Description of the Related Art A conventional transplanter is disclosed in, for example, Japanese Patent Application Laid-Open No. 11-56024. This technology includes a seedling tray feeding device that transports a seedling tray having a large number of pots vertically and horizontally on a traveling machine, a seedling that seeds the seedlings planted in the pots on ridges, and a seedling from the seedling tray. And a seedling removal device for removing the seedlings one by one and transferring the seedlings to a planting body, wherein the seedlings are sequentially planted in the ridge longitudinal direction while traveling along the ridges.

[0003] The seedling removing device includes a pair of left and right seedling removing claws. The seedling removing claws are supported by a holder so as to be able to advance and retreat, and are urged in a retreating direction by a spring. In a state facing the seedling tray, the advancing drive means advances the spring against the spring to pierce the root pot of the seedling, and then moves the holding body in a direction away from the seedling tray to pierce the seedling removal claw. The seedlings were removed from the seedling tray and transferred to the planting body. In addition, the pair of seedling extraction claws are provided such that their base end portions are rotatable around the vertical axis, and the posture thereof is regulated by a guide tool. When piercing into the root pot, it relatively retreats and acts to narrow the gap between the tips of the pair of seed picking nails, thereby holding the root pot between the pair of seed picking nails from the left and right. I was

[0004]

The advance driving means in the above-mentioned prior art is configured to be released after the seedling removal claw is pierced into the root pot portion, and this release allows the seedling removal claw to be released from the spring. Locking means keeps the seedling extraction claw in the advanced state so as not to recede from the root pot by the action and not to come off. However, since the locking means is configured to engage the lock member by slightly retreating the seedling extraction claw by the action of the spring after the advance driving means is released, the guide is moved by the retraction of the seedling extraction claw. The gap between the pair of seedling removal nails is slightly opened via the tool, and there has been a problem that the holding force on the root pot is loosened.

[0005] In particular, in the case of seedlings having thick roots such as onions and the like, rooting of the root mortar becomes poor. If the holding power of the seedling removal nails is loosened, the seedlings are likely to collapse. It was a cause of inviting and causing a lack of shares. Also,
Even if there is looseness between the guide tool and the seedling removal claw, the holding power of the seedlings is impaired, so that the seedlings may fall during transfer. The present invention has been made in view of the above problems, and has a transplanting machine capable of reliably taking out and transferring seedlings from a seedling tray without impairing the holding power of a root pot by a seedling removal claw. It is intended to provide a device.

[0006]

The present invention employs the following technical means to achieve the above object. That is, the present invention narrows the distance between the pair of seedling removal claws that can be inserted into the pot portion of the seedling tray and relatively retreats when the seedling removal nails enter the pot portion. And a guide member for guiding the seedlings in the manner described above, further comprising an urging member for urging in a direction to narrow the space between the pair of seedling extraction claws.

[0007] Thus, it is possible to prevent the root pot portion of the seedling from being securely sandwiched and loosened, and to prevent mistakes in taking out the seedling from the pot portion and dropping during transfer. The present invention
A gap is provided between the guide tool and the seedling extraction nail to allow expansion and contraction between the pair of seedling extraction nails. According to this, since the pair of seedling removal claws are urged by the urging member so as to reduce the interval, the gap is provided between the left and right outer sides of the seedling removal claw and the guide tool when the seedling is not held. Is generated. And when piercing the root pot of the seedling while narrowing the interval between the pair of seedling picking nails with the guide tool, the reaction force from the root pot between the seedling picking nails causes a gap between the guide tool and the seedling picking nail. The space between the seedling extraction claws is widened by the gap against the urging member, and the gap is formed between the inside of the seedling extraction nail and the guide tool.

For this reason, even when the locking means or the like is operated to keep the seedling extraction nail in the advanced state, even if the seedling extraction nail slightly retreats with respect to the guide tool, the pair of seedling extraction nails is formed by the inner gap. Since the pair moves forward and backward and is urged by the urging member in a direction to reduce the interval, the interval between the pair does not increase and the holding of the seedling does not loosen.
The present invention provides a pair of seedling removal claws that can enter a pot portion of a seedling tray, a holding body that holds the seedling removal nails so as to be able to advance and retreat, and a holder that is attached to the holding body in a direction in which the seedling removal nails are retracted. Urging means for energizing, advancement driving means for advancing the seedling extraction claw against the urging member so that the seedling extraction claw enters the pot portion, and when the advancement driving means is released. Locking means for holding the advancing state of the seedling extraction claw with respect to the holding body; and a guide tool for guiding the seedling extraction claw to narrow the distance between the pair of seedling extraction claws by relatively retreating when the seedling extraction claw enters the pot portion. And a biasing member for biasing the pair of seedling removal claws in a narrowing direction, and a pair of seedling removal between the guide tool and the seedling removal nail. It is characterized by providing a gap that allows expansion and contraction between claws Than it is.

According to this, similarly to the above, the pair of seedling removal claws are urged by the urging member so as to narrow the interval, so that the left and right outer sides of the seedling removal nail are held in a state where the seedling is not held. The gap is generated between the guide member and the guide member. And when piercing the root pot of the seedling while narrowing the interval between the pair of seedling picking nails with the guide tool, the reaction force from the root pot between the seedling picking nails causes a gap between the guide tool and the seedling picking nail. The space between the seedling extraction claws is widened by the gap against the urging member, and the gap is formed between the inside of the seedling extraction nail and the guide tool. For this reason, when the locking means is operated to maintain the advanced state of the seedling extraction nail, the pair of seedling extraction nails move back and forth in the inner gap even if the seedling extraction nail slightly retreats with respect to the guide tool. At the same time, since the urging member is urged in the direction to decrease the interval, the interval between the pair does not increase, and the holding of the seedling does not loosen.

[0010] The seedling removal claw is preferably formed in a spatula shape by a plate material, whereby the root pot portion of the seedling can be sandwiched by a spatula-shaped surface, so that the root pot portion can be more securely prevented from collapsing. Can be prevented.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show a transplanting machine 1 equipped with a seedling removal device 40 according to the present invention. The transplanting machine 1 has a walking device having a transplanting device 3 and a steering handle 4 at a rear portion of a traveling body 2. This is a type in which soil-bearing seedlings are automatically planted at predetermined intervals in the ridge R while running in the longitudinal direction of the ridge while straddling the ridge R. In addition, the transplanter 1 is configured to plant two right and left seedlings by running one way (one direction running) in the ridge longitudinal direction.

In the following, the traveling direction of the transplanter 1 is referred to as the front-back direction, and the lateral direction perpendicular to the traveling direction is referred to as the left-right direction. The traveling body 2 has a gantry 6 attached to and fixed to a front portion of a transmission case 5 so as to protrude forward, and an engine, a fuel tank, a battery, and the like are mounted on the gantry 6. The vehicle has a front wheel 8 and a rear wheel (drive wheel) 9 provided on both right and left sides of the body 7.
The traveling body can be moved by the rear wheel 9. The power from the engine is input to the transmission case 5, and the wheel transmission shaft 10 and the first PTO shaft 11 projecting from the left and right side surfaces of the transmission case 5, and the second PT projecting from the rear surface.
Power can be taken out from the O-shaft 12, and a transmission case 13 having a rear wheel 9 at a lower portion is provided on the wheel transmission shaft 10.
Are connected so that the power from the wheel transmission shaft 10 is transmitted to the rear wheel 9 via the transmission case 13.

The front wheel 8 is attached via an arm 15 to a front wheel support shaft 14 extending in the left-right direction from the front portion of the gantry 6. As shown in FIG. 2, one of the left and right sides (right side) of the front wheel support shaft 14 and one of the left and right sides of the wheel transmission shaft 10 are configured to be extendable and contractible, and can be adjusted according to the left and right width of the ridge R. I have. Therefore, the transplanter 1 is provided with the left and right front wheel support shafts 1.
By extending the wheel drive shaft 4 and the wheel transmission shaft 10, the transplanting device 3 is offset to the other side (left side) of the ridge R, and the transplanter 1 is reciprocated in the longitudinal direction of the ridge R in this state. The seedlings are planted in the ridges R.

For the narrow ridge R, the front wheel support shaft 14
In addition, the wheel drive shaft 10 is contracted, and the transplanting device 3 is arranged at the center of the ridge, and one-way running in the longitudinal direction of the ridge R allows two rows of seedlings to be planted per ridge.
Also, when the vehicle is traveling on the road or stored, the front wheel support shaft 11 and the wheel transmission shaft 10 are contracted to be compact. The transplanting device 3 includes a planting unit 1 for planting a seedling in a ridge R.
8 and a seedling supply unit 19 for supplying seedlings to the planting unit 18.

The planting section 18 is supported by a movable frame 20 which is vertically swingably supported by the first PTO shaft 11,
The seedling supply section 19 is supported by a fixed frame 21 fixed to the rear of the transmission case 5. Planting part 18
In this embodiment, a pair of right and left is provided corresponding to the double-row planting, and each planting portion 18 forms a planting hole in the ridge R as shown in FIGS. , A lifting mechanism 24 for vertically moving the planted body 23 between an upper seedling supply position and a lower seedling release position, and a covering member 25 for covering the left and right sides of the planted seedlings. Having.

The implant 23 has a pair of front and rear beaks 23F, 23R formed in a tapered lower end.
The beaks 23F and 23R are pivotally connected to each other via an interlocking pin 28 so as to rotate back and forth to open and close the lower end. The elevating mechanism 24 has a drive shaft 30 rotatably supported above the movable frame 20, and the drive shaft 30 is provided with a first PT
Power is transmitted from the O-shaft 11 via a winding transmission mechanism or the like.

A crank arm 31 is fixed to the drive shaft 30, and a tip of a first link member 34A is pivotally connected to a tip of the crank arm 31 via a pin 32. The front ends of a pair of upper and lower first parallel links 33 are pivotally connected to a bracket 35 fixed to a lower portion of the movable frame 20, and the rear ends of the parallel links 33 are connected to the connecting plate 3.
6 are articulated. The connecting plate 36 has a second
The rear end of the link member 34B is pivotally connected, and the lower end of the leg 38 hanging from the first link member 34A is pivotally connected. The first and second link members 34A and 34B form a pair of upper and lower second members. A parallel link 34 is formed, and the rear end of the second parallel link 34 is pivotally connected to the connector 27 of the plant 23.

According to the above configuration, when the drive shaft 30 is driven to rotate, the crank arm 31 rotates, thereby causing the first
The front and rear upper and lower positions of the front end of the link member 34A change, and accordingly, the first and second parallel links 33 and 34 swing. The rocking movement causes the planting body 23 to move while drawing a vertically elongated loop trajectory Y (showing the trajectory of the interlocking pin 28 in the figure). Further, when the plant 23 moves to the lower side of the trajectory Y, the lower ends of the pair of bills 23F and 23R are opened by the pulling tool 37 provided between the front beak 23F and the bracket 35 and held inside. It is designed to release seedlings.

As described above, by elongating the movement locus Y of the planting body 23 vertically, it is possible to suitably cope with a plant to be planted with a small interplant. As shown in FIGS. 1 and 2, the seedling supply unit 19 includes a seedling tray 39 on which seedling trays T in which a large number of seedlings are planted are placed in an upwardly inclined shape and intermittently fed in the vertical and horizontal directions. And a seedling extracting device 40 for extracting seedlings from the pot portion P of the seedling tray T and transporting the seedlings to the planting body 23. The seedling tray T is made of plastic, is formed thin, has flexibility, and has pot portions P arranged in a grid pattern at predetermined pitches in the vertical and horizontal directions. It is assumed that it has been nurtured.

The seedling extracting device 40 is disposed in front of the seedling mounting table 39 (in front of the transplanting machine in the traveling direction). In the present embodiment, a pair of right and left seedlings is provided to cope with double-row planting. I have. As shown in FIG. 4, each of the left and right seedling extracting devices 40 includes a pair of left and right seedling extracting claws 41 that can enter the pot portion P of the seedling tray T, and supports the seedling extracting claws 41 so as to be able to advance and retreat in the front-rear direction. And a driving device 43 that pierces the seedling removal claw 41 into the root pot N1 of the seedling N in the pot portion P, removes the seedling from the pot portion P, and transfers the seedling N to the planting body 23. .

Each of the right and left seedling removal devices 40 takes out the seedlings N from one and the same seedling tray T, and forms a substantially X-shaped locus X as shown in FIGS. The seedlings N are transferred to the planting body 23 while being drawn. In the following description of the seedling removal device 40, the direction in which the seedling removal claws 41 enter the seedling tray T is defined as the front, and the opposite direction is defined as the rear. Therefore, the description is opposite to the front-rear direction in the description of the transplanter 1 described above. The seedling removal claw 41 is attached to a claw attachment 46 provided at a distal end portion of a pipe-shaped claw support 45, and the claw support 45 is attached to a cylindrical portion 42 </ b> A provided at an upper portion of the holder 42. On the other hand, it is inserted so as to be able to advance and retreat in the axial direction.

A retraction urging member 47 made of a compression coil spring is provided between the claw support 45 and the cylindrical portion 42A.
The retraction urging tool 47 causes the nail support 45 (the seedling removal nail 4).
1) is urged in a direction to retract with respect to the holding body 42. As shown in FIG. 5 and FIG. 6A, the pair of left and right seedling removal claws 41 has a spatula shape formed by being bent in a substantially rectangular shape so that the upper and lower middle portions of the plate material project right and left outward. , Left and right are symmetrical with each other,
The base end side is pivotally supported by a pawl attachment 46 via a pivot pin 48 so as to be able to expand and contract the distance between a pair of distal ends.

At the rear end of the pair of seedling removal claws 41, there is provided an urging member 49 made of a compression coil spring for urging in a direction to narrow the interval between the tips. The seedling removal claw 41 can be replaced with a bent one in a substantially L-shape as shown in FIG. 6B, or a round bar-shaped one as shown in FIG. 6C. . Further, the biasing member 49 may be a tension coil spring that is provided on the front side of the support pin 48, or may be a torsion coil spring that is fitted over the support pin 48. A rod 50 is inserted in the claw support 45 so as to be able to advance and retreat, and a guide member 51 is provided at the tip of the rod.

The guide member 51 is formed of a plate material and has a guide portion 51A formed of a groove (a hole in the case of FIG. 6C) penetrating before and after the seedling removal claw 41 is inserted. The guide tool 51 advances or retracts relative to the seedling removal claw 41 as the rod 50 advances and retreats in the body 45. As shown in FIG. 5, when the guide tool 51 advances relative to the seedling removal claw 41, it is guided by the guide portion 51 </ b> A, and the distance L <b> 1 between the pair of seedling removal claws 41 is changed.
Expands and retreats, the distance L2 between the pair of seedling removal claws 41 is reduced.

The groove or hole of the guide portion 51 is a
Therefore, a gap t1 is formed between the guide tool 51 and the seedling extraction nail 41 to allow expansion and contraction between the pair of seedling extraction nails 41. Since the pair of seedling removal claws 41 is urged by the urging member 49 so as to reduce the interval, as shown in FIG. The gap t is in contact with the inside of the guide portion 51A, and
1 is formed. As shown in FIG. 4, between the claw support 45 and the rod 50, an advance urging tool 53 composed of a compression coil spring is provided. The guide tool 51 is urged in the forward direction.

The driving device 43 includes a transmission case 5
A drive shaft 55 for transmitting power to the second PTO shaft 12 via a transmission shaft or the like. The drive shaft 55 is provided with a crank body 56 and a drive cam 57 coaxially. An engaging roller 58 and a pushing roller 59 are mounted coaxially on the left and right side surfaces of the distal end of the crank body 56. A swing shaft 60 provided below the drive shaft 55 includes:
A swing arm 61 is pivotally supported to be able to swing back and forth, and a cylindrical portion 42A of the holding body 42 is pivotally connected to an upper portion of the swing arm 61 via a pin 61B. A vertically long groove cam 61A is formed on the swing arm 61, and the engaging roller 58 is engaged with the groove cam 61A. Therefore, when the drive shaft 55 rotates, the swing arm 61 swings back and forth about the swing shaft 60 via the crank body 56 and the engagement roller 58.

A guide roller 62 is attached to the rear side of the cylindrical portion 42A of the holder 42. The guide roller 62 has a front end pivotally supported by a support shaft 63 so as to be vertically swingable. It is engaged with the guide groove 64A of the plate 64. A roller 64B is provided below the guide plate 64, and the roller 64B is in rolling contact with the outer periphery of the drive cam 57. The shaft 6 is provided at the lower part of the holding body 42.
The push-out link 66 is pivotally connected via the pin 5, and the distal end of the push-out link 66 is engaged with the claw attachment 46 via a pin or the like.

The pushing link 66 is provided with an abutting plate 66A which can abut against the pushing roller 59. The crank body 56 is rotated counterclockwise to move the pushing roller 59 to the abutting plate 66A. , The extrusion link 66 is pushed forward,
The nail support 45 and the seedling removal nail 41 advance forward with respect to the holder 42, and the retraction urging tool 47 is compressed. Here, the drive shaft 55, the crank body 56,
The pushing roller 59 and the push-out link 66 constitute an advance driving means 44 for causing the seedling extraction claw 41 to advance with respect to the holder 42.

Further, when the pushing roller 59 is separated from the abutted plate 66A by the further rotation of the crank body 56, the claw support 45 attempts to retreat backward with respect to the holder 42 by the retraction urging member 47. However, a lock means 68 for preventing the retreat and maintaining the advanced state is provided. Further, the locking means 68 is
It also has a function of maintaining the state when the rod 50 is retracted. As shown in FIGS. 4 and 7, the locking means 68 has an operating member 69 pivotally connected to the rear portion of the holding body 42. The operating member 69 is attached clockwise by a spring or the like. It is being rushed.

A locking member 70 is provided at the rear end of the claw support 45.
When the claw support 45 advances to the holder 42 (the state shown in FIG. 7C), the claw of the lock member 70 is engaged with the engaged portion provided at the rear of the holder 42. 71 can be engaged. Further, by rotating the action member 69 counterclockwise, the lock is released when the lock member 70 is pushed up by the release piece 69A provided at the front part thereof. An L-shaped contact piece 72 is provided at the rear end of the rod 50 when viewed from the side.
When the rod 50 is retracted, the lock piece 69B provided at the rear of the action member 69 can be engaged.

When the action member 69 is rotated counterclockwise, the engagement between the contact piece 72 and the lock piece 69B is released. With the configuration described above, when the drive shaft 55 and the crank body 56 rotate, the swing arm 6
1 swings back and forth and the holding body 42 moves back and forth, and the guide rollers 62 of the holding body 42
By being guided by A, the seedling removal claw 41 and the guide tool 51 are moved between a substantially forward state facing the seedling tray T in FIG. 4 and a substantially downward state facing the planting body 23 in FIG. And the seedling-claw 41 moves while drawing the trajectory X.

As shown in FIG. 7A, immediately before the seedling removal nail 41 enters the pot portion P of the seedling tray T, the nail support 45 (the seedling removal nail 41) moves with respect to the holder 42. The rod (guide member 51) is retracted and advanced to the claw support 45, and the tip of the seedling removal claw 41 is moved along the trajectory X.
(See FIG. 4) and is located at the P1 position and faces the seedling tray T. Then, as shown in FIG.
When the pushing link 59 is pushed out by the pushing roller 59 by rotating the seedling 6, the seedling removal claw 41 advances from the holding body 42 and the guide tool 51, and the tip is disposed at P 2 of the trajectory X. It is designed to enter.

At this time, the guide member 51 is provided with a locking means 68.
Since the position with respect to the holding body 42 is maintained by
The seedling removal nail 41 is retracted relative to the seedling removal nail 41, and holds the root pot N1 of the seedling N from right and left while narrowing a pair of intervals as shown in FIG. And the seedling removal nail 41
Has a gap t1 between it and the guide tool 51,
As shown in FIG. 8A, the root pot N sandwiched between a pair
The pair of gaps L2 is pushed out against the biasing member 49 by the reaction force from 1 and a gap t1 is formed inside by contacting the outside of the guide portion 51A as shown in FIG.

Further, as shown in FIG. 7B, the retraction urging member 47 is compressed by the advance of the claw support 45, and the claw of the lock member 70 advances beyond the engaged portion 71, and A gap t2 is formed between the claw and the engaged portion 71. This gap t
Reference numeral 2 denotes an overstroke required to securely engage the lock member 70 with the engaged portion 71 when the pushing action by the pushing roller 59 is released. When the crank body 56 is further rotated after the seedling removal claw 41 has been inserted into the pot portion P, the holding body 42, the seedling removal claw 41, the guide tool 51, and the like are integrally retracted by the swinging movement of the swing arm 61, and the seedling is removed. The seedling N held by the extraction nail 41 is extracted from the pot portion P.

When the seedling removal claw 41 reaches P3 of the trajectory X, the pushing roller 59 is disengaged from the pushing link 66 as shown in FIG. As a result, the claw support 45 retreats a little with respect to the holder 42 by the gap t2, and the lock member 70 and the engaged portion 71 are engaged. At this time, the seedling removal claw 41 slightly retreats with respect to the guide tool 51 by the gap t2, but a gap t1 is formed inside the seedling removal claw 41 as shown in FIG. Since it is formed, the seedling removal nail 41
Only retreats in a substantially parallel manner within the gap t1 as shown by the two-dot chain line, so that the pair of distances L3 does not expand (see FIG. 8 (c)), impairing the holding power of the seedling N. There is no. Further, a new gap t1 is formed outside the seedling removal claw 41 by the retreat movement thereof,
Because the number 9 is provided, the seedling removal nail does not spread to the gap t1 side.

From the above, the seedlings can be reliably supplied to the planting body 23 without failing to remove the seedlings from the pot portion P or dropping the seedlings during the transfer to the planting body 23.
The occurrence of lack of stock and the like can be prevented. In addition, since the urging member 49 is provided, the transfer of the seedling can be reliably performed without rattling between the guide tool 51 and the seedling removal claw 41 due to vibration of the transplanter 1 or the like. It will be. After taking out the seedling as described above, the seedling removal claw 41 moves to above the planted body 23 via the trajectory X, and the action member 69 moves to the lower end 6.
9C rotates counterclockwise by contacting the contact member 73, and firstly, the engagement between the contact piece 72 at the rear end of the rod 50 and the lock piece 69B of the action member 69 is released.

Then, the rod 50 advances to the claw support 45 by the advance urging tool 53 in which the compressive force has been accumulated in advance, and the seedlings N held by the seedling take-out claws 41 are pushed out by the guide tool 51 so as to be pushed out. Release to 23. After the release of the seedlings, the lock member 70 is pushed up by the release piece 69A of the action member 69, and the claw support 45 (the seedling removal claw 41) and the rod 50 (the guide tool 51) are both moved by the retraction urging member 47 with respect to the holder 42. Be retreated. As shown in FIG. 3, when releasing the seedling N to the planted body 23, the seedling N
Depending on the posture of the seedling removal claw 41, the rearward beak 23R of the planted body 23 has a substantially vertical rear surface, whereas the rearward beak 23R of the planting body 23 is substantially vertical. And the relative angle with the release direction B is set to be small, thereby alleviating the collision of the seedlings N with the rear surface, and preventing the root pot portion N1 from collapsing or disturbing the posture. .

The present invention is not limited to the above embodiment, but can be appropriately designed and changed. For example, in the above-described embodiment, a walking type transplanter is shown, but it can be a riding type transplanter, and a planting unit and a seedling supply unit are provided as a pair of left and right, but each is one. It may be a one-way single-row planting or a reciprocating two-row planting type transplanter provided with each.

[0039]

As described above in detail, according to the present invention, since the seedling can be reliably held by the seedling removal nail,
It is possible to prevent a mistake in removing a seedling, a fall during transfer, and the like.

[Brief description of the drawings]

FIG. 1 is an overall side view of an implanting machine according to an embodiment of the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is a side view of a seedling removal device and a planting section.

FIG. 4 is a side view of the seedling removal device.

FIG. 5 is an enlarged plan view of a seedling removal claw and a guide tool.

FIG. 6A is a diagram showing an arrow AA in FIG. 5, and FIG.
And (c) according to another embodiment of the seedling removal nail (a)
FIG.

7A is a state immediately before a seedling is taken out from a pot portion, FIG. 7B is a state where a seedling removal claw is inserted into the pot portion,
(C) is a side view which shows the state immediately after taking out the seedling from the pot part.

8A is a plan view showing a state in which a seedling removal claw is inserted into a pot portion, FIG. 8B is an enlarged cross-sectional view of a portion C in FIG.
(C) is a top view showing the state immediately after taking out a seedling from a pot part.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 transplanter 40 seedling removal device 41 seedling removal claw 42 holder 44 advance drive means 47 retraction urging tool 49 urging member 51 guide tool 68 locking means

 ──────────────────────────────────────────────────の Continued on front page (72) Inventor Takao Mizoguchi 64 Ishizu-Kitacho, Sakai-shi, Osaka F-term in Kubota Sakai Works Co., Ltd. (Reference) 2B060 AA06 AC02 AD07 AE01 BA03 BA09 CB17 CB25 CC05 2B064 AA01 AB07 FA40

Claims (4)

[Claims] 1. A pair of seedling removal claws which can enter a pot portion of a seedling tray, and the pair of seedling removal claws are narrowed by relatively retracting when the seedling removal nails enter the pot portion. Seedling removal device for a transplanter, comprising: a biasing member that biases in a direction to narrow the gap between the pair of seedling removal claws. apparatus. 2. Between the guide tool and the seedling removal claw,
The seedling removal device for a transplanting machine according to claim 1, wherein a gap is provided between the pair of seedling removal claws that allows expansion and contraction. 3. A pair of seedling extraction claws which can enter a pot portion of a seedling tray, a holding member which holds the seedling extraction nails so as to be able to advance and retreat, and a direction in which the seedling extraction nails are retracted with respect to the holding member. The retracting urging tool to be urged, the advancement driving means for causing the seedling extraction claw to advance against the retraction urging tool so that the seedling extraction claw enters the pot portion, and the advancement driving means are released. A locking means for holding the advancing state of the seedling extraction claw with respect to the holding body when the seedling extraction claw enters the pot portion, thereby narrowing a gap between the pair of seedling extraction claw by relatively retracting. A seedling removal device for a transplanter, comprising: a guide member that guides the seedling in such a manner that a biasing member that biases the pair of seedling removal nails in a narrowing direction is provided between the guide member and the seedling removal nails. Is provided with a gap that allows expansion and contraction between a pair of seedling removal nails. Transplanter seedlings take-out apparatus, wherein a. 4. The seedling removing device for a transplanter according to claim 1, wherein said seedling removing nail is formed in a spatula shape by a plate material.