JP3238593B2 - Method and apparatus for removing and supplying seedling of transplanter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for removing and supplying seedlings of a transplanter, and is used for transplanting vegetables such as cabbage and lettuce.

[0002]

2. Description of the Related Art Vegetable transplanters for raising seedlings in seedling trays having pot portions in an array of vertical and horizontal lattices, and removing and transplanting seedling soil (sedimentary seedlings) from the pot portions are known. Is being mechanized. In this vegetable transplanter, it is important to take the seedling soil from the pot portion, and various takeout techniques have been proposed because of the strength of the roots in taking out the seedling.

One of the methods is to use a drain hole formed at the bottom of the pot portion to push an extruding tool into the hole, thereby extruding seedling soil from an opening of the pot portion (1 of the conventional example). . Further, there is another one in which seedlings are taken out from an opening in a pot portion by inserting and removing a seedling removal claw into and from a seedling soil through an opening in a pot portion (second conventional example). Further, as another one, a technique in which the conventional example 1 and the conventional example 2 are combined has been proposed (see Japanese Patent Application Laid-Open No. 4-330211, and the conventional example 3).

[0004]

One of the conventional examples is that when a group of seedlings in a row is protruded with an extruding tool, the seedlings are inserted into a drainage hole. It was not possible, and the possibility of misalignment was great, especially because the diameter of the drain hole was small. Even if there is no misalignment, the extruder can only use thin rods, and in the case of seedlings with weak roots, the seedlings can be pushed out from the pot simply by sticking the sticks into the seedlings. There was a case that could not be done.

[0005] In the second conventional example, when the seedling removal claw is pierced into the seedling soil in the pot portion, the rushing movement is linear. There was a problem that seedlings were likely to remain in the pot after being pulled out. Conventional example 3 is a cooperative action between the push using the drain hole of the pot portion and the pulling out of the seedling soil, so that it can be understood that the seedling soil can be taken out at first glance. However, it is necessary to synchronize the movement of the push from behind the pot part and the movement of the seedling removal claw from the surface, and if this synchronization goes wrong, it is difficult to take out the seedling soil from the pot part with one of the preceding. Further, since the tuning mechanism is attached, not only is the structure complicated and the cost is increased, but also the adjustment is difficult.

Further, a type in which seedlings are taken out by entering and leaving a seedling removal claw from the opening edge of the pot portion, that is, in the second conventional example, if a cam is adopted as a claw movement mechanism of the seedling removal claw, The number of moving parts increased, and an error was likely to occur in the operation. Further, in the second conventional example, when the seedling removal claw is inserted into the pot portion, the leaves of the seedling soil may be pierced or broken, which may result in poor survival after transplanting and leaf withering. This may have a negative effect on the growth of seedlings.

Therefore, according to the present invention, when the tip side of the seedling removal nail enters the seedling soil of the pot portion, the lower side of the leaf in the seedling soil is removed.
Without damaging the leaves by is advanced to rush from the state scooped leaves Rukoto to pass, yet, the method can make reliably supply the seedling taking out by adopting a link mechanism as a pawl operating mechanism device The purpose is to provide.

[0008]

According to the present invention, a seedling tray 41 is provided.
The tip side of the seedling removal claw 56 is made to protrude into the seedling soil C of the pot portion 40 in FIG.
The seedling C is taken out from the pot part 40 by leaving the side ,
This is a method of supplying the extracted seedling soil C to the transplanting part 37, and the following technical means are taken to achieve the above-mentioned object.

That is, the method of the present invention according to claim 1 comprises:
Naedo when said lower lateral side of the opening edge near the pot portion 40 and inrush starting position of the tip side in the seedling taking out pawl 56 against Naedo C, and advancing the distal end side of the seedling taking out pawl 56 in the rush starting position C, so as to pass through the lower side of the leaf C1. The distal end side of the seedling extraction claw 56 is positioned in the nail longitudinal direction from the entry start position toward the depth direction depth of the pot portion 40.
When exiting from the pot 40 from the rush along the direction of the distal end side of the seedling taking out the nail 56 by said lower side in the pot 40 to the end position out retractable and opposite upper side in
The trajectory in the pot portion 40 is set as a substantially V-shaped trajectory
C is taken out from the pot section 40 . Further, the method according to the present invention according to claim 2, wherein the pot
The lower side near the opening edge of the portion 40 is the seedling collection for the seedling soil C.
The entry start position on the distal end side of the projection 56 is
When the tip of the seedling extraction claw 56 is advanced to the starting position,
The leaf C1 in the soil C is entered so as to be scooped, and the plunge is opened.
From the starting position toward the depth direction back of the pot portion 40,
From the pot part 40 after the tip of the seedling removal nail 56
When exiting, the exit end position is set below the pot section 40.
V-shaped reciprocating motion trajectory that is the upper side opposite to the
It is characterized by doing.

According to a third aspect of the present invention, the seedling extracting claw 56 is provided on a nail holder 59 so as to be able to advance and retreat along the nail longitudinal direction, and the tip side of the seedling extracting claw 56 is connected to the pot portion. A claw operating mechanism 42 that reciprocates between a seedling removal position 40 and a seedling supply position of the transplanting section 37; the claw holder 59 is mounted on the claw operating mechanism 42 so as to be rotatable; , lower lateral side of the opening edge near the pot portion 40 through the pawl holder 59 tip side of the seedling taking out pawl 56 huge
Leaf C in seedling soil C when approaching the nail start position
Includes a pawl guide means 71 which enters one of or leaves C1 so as to pass through the lower side to scoop, the distal end side of the seedling taking out pawl 56
When the rush start position is reached, the tip side of the seedling removal claw 56 rushes toward the depth direction deep portion of the pot portion 40 and then
When exiting from the pot section 40, the exit end position is
The seedling by setting it to the upper side opposite to the lower side of the
The trajectory of the extraction claw 56 in the pot portion 40 on the distal end side is substantially V
The claw driving means 65 having a character shape is provided.

Further, the device according to the present invention according to claim 4 is characterized in that the claw operating mechanism 42 is constituted by a parallel link mechanism 57. Further, the invention apparatus according to claim 5, the tip end of the seedling taking out pawl 56, when supplying seedlings soil C taken out from the pot 40 to the graft portion 37, the sauce to support the leaf C1 in seedling soil C It is characterized in that it has a portion for preventing descent.

[0012]

According to the present invention, when the seedling extraction claw 56 provided on the claw holder 59 is movable toward the pot portion 40 on the seedling feeder 43 by the movement of the claw operating mechanism 42, the claw holder 59 is moved to the claw. By contacting the guide means 71, the claw operating mechanism 42
Claw holder 59 which is rotatably mounted is rotated to rotate the holding means 58 which is a pivot shaft as a fulcrum on the distal end side of the seedling taking out claws 56 as shown in FIG. 1 from 6, seedlings The soil C is advanced to a rush start position which is one side (lower side) near the opening edge of the pot portion 40 so as to pass below the leaf C1 in the soil C or scoop the leaf C1 (FIG. 1).

[0013] When the leading end of the seedling taking out claw 56 comes to rush starting position by pawl driving means 65 raises跳Ri extrusion arm 63 is operated, the distal end side of the seedling taking out pawl 56 returning means 6
With the claw holder 59 as a guide, the pot moves from the entry start position toward the depth of the pot portion 40 to enter the seedling soil C of the pot portion 40 (see FIG. 2). Subsequently, by the movement of the claw operating mechanism 42, the tip side of the seedling removal claw 56 retreats toward the other side of the pot portion 40 (upper side opposite to the lower side) in a substantially V-shaped trajectory as shown in FIG. By doing so, the seedlings with strong rooting cut the root hairs, and the seedlings with weak rooting pierce the seedling soil C in a wedge shape, securely take out the seedling soil C from the pot part 40, and are substantially parallel to the transplanting part 37. It is supplied in motion (see FIGS. 4 and 5).

At the time of feeding (return stroke) by the substantially parallel movement of the claw operating mechanism 42, the leaves C1 of the seedling soil C are prevented from drooping by the seedling removal claws 56 (see FIG. 4). Immediately before the end of the process, the claw holder 59 comes into contact with the stopper 72, so that the seedling extraction claw 56 is accelerated by the rotation of the claw holder 59 about the rotation holding means 58, and the posture is changed to a substantially vertical posture. Seedling soil C is placed above 37 (see FIG. 5).

Further, the claw locking means 69 comes into contact with the releasing means 73 almost simultaneously with the change of the posture via the claw holder 59 immediately before the end of the supply process, so that the claw locking means 6 is released.
7 is released, the seedling removal claw 56 is withdrawn by the return means 66 using the claw holder 59 as a guide, and the seedling soil C that has been removed and conveyed is transferred to the transplanting section 37, and the claw operating mechanism 42 is provided.
The distal end side of the seedling taking out claw 56 is parallel movement remains substantially vertical position by operation of the pawl holder 59 in the nail guide means 71 is a stopper contact (see FIG. 6), the seedling taking out pawl 56 again
The tip side passes under the leaf C1 or scoops the leaf C1
And repeat this reciprocating operation.

The tip trajectories X and Y of the seedling removal claw 56 due to the reciprocating operation of the claw operating mechanism 42 have a substantially 8-shaped shape which closes almost at the middle of the reciprocating operation as shown in FIGS.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIG. 11 showing a side view and FIG. 12 showing a plan view of a vegetable transplanter 11 equipped with a seedling removal / supply device 10 according to a first embodiment of the present invention, Numeral 11 denotes a walking type having a steering handle 13 at a rear portion of the running vehicle body 12, and while running in the longitudinal direction across the ridges 14, seeded seedlings C are planted on the ridges 14 at predetermined intervals. I have.

The traveling vehicle body 12 includes a main frame 15, a gantry 16 provided at the front end of the main frame 15, and the like. An engine 17 is mounted on a gantry 16, and the engine 17 is covered with a bonnet 18. A transmission case 19 is fixed to the rear of the gantry 16. It is linked by the body 20.

The power from inside the transmission case 19 is taken out by two systems, a wheel transmission shaft 21 and a PTO shaft 22, and the right and left ends of the wheel transmission shaft 21 swing up and down around the axis. Left and right drive wheels 24 via transmission case 23
, And can immediately respond to the height of the ridge 14, and the driving wheels 24 can be driven by the wrapping transmission body in the transmission case 23. This drive wheel 24 rolls in the groove between the ridges 14.
In addition, a pair of left and right front wheels 25 is provided at a front portion of the traveling vehicle body 12.
A ridge shoulder copying roller 26 is provided.

The main frame 15 of the traveling vehicle body 12 is formed of a square pipe or the like, and its front portion is bent downward,
6 and the rear portion is bent upward to serve as a mounting portion for the steering handle 13. Traveling car body 1
At the rear of 2, a transplant working section 30 is provided. The transplanting operation unit 30 converts the seedling removal / supply device 10 and the soild seedling (seedling soil) C supplied from the seedling removal / supply device 10 into a ridge 1.
4, and is provided on a movable frame 33 that swings up and down around the axis of a power receiving shaft 32 supported on a fixed side of the transmission case 19 and the like. At the rear of the movable frame 33, a pressure reduction roller (or soil covering roller) 34 is provided.

The planting device 31 is supported by a movable frame 33 via a suspension link 35 so as to be vertically swingable by a parallel link 36, and a beak-shaped planting tube 37 is attached to the tip of the parallel link 36. The planting cylinder 37 is vertically movable by a crank motion of a crank body 38 linked to a middle part of the parallel link 36. The seedling tube 37 is a transplanting part and is open upward, so that the seedling C is dropped from the seedling extraction / supply device 10 disposed above the seedling tube 37. , Parallel link 3
6, when the ridge 14 is pierced into the ridge 14, the lower end is opened to plant the seedling C with soil.

The seedling removal / supply device 10 includes a seedling tray 4 in which a large number of pots 40 in which seedlings C with seedlings are raised are arranged vertically and horizontally.
From No. 1, soil-bearing seedlings C are taken out one by one and dropped into the planting cylinder 37. The seedling tray 41 is made of resin and has flexibility, and a large number of pots 40 arranged vertically and horizontally are provided so as to protrude from the back surface. A draining hole (not shown) is provided at the bottom of the pot 40. Are formed. In each pot portion 40, seedlings C with seedlings are raised, and the pot portion 4
A gap is formed vertically and horizontally between 0 (see FIG. 10).

As shown in FIGS. 1 to 10, the seedling picking / supplying device 10 according to the first embodiment of the present invention comprises a potting portion 40 of a seedling tray 41 at a predetermined seedling picking position with respect to a planting device 31.
A claw operating mechanism 42 for picking out soiled seedlings C one by one by a seedling take-out claw 56 from
A large number of pots 40 arranged in the vertical and horizontal directions are
Feeding device 43 (transporting means) for transporting the seedling tray 41 in the horizontal and vertical directions so as to be sequentially positioned at the take-out position by the
And

The claw operating mechanism 42 reciprocates the seedling removal claw 56 between the seedling tray 41 and the transplanting part 37.
An apparatus frame 44 fixed on the movable frame 33 is provided. The apparatus frame 44 is provided with a prime mover 45 which is driven to rotate counterclockwise in FIGS. 1 to 6 by rotational power from the PTO shaft 22. ing. The driving body 45 is a pair of right and left as shown in FIG. 7, and a driving shaft 47 is rotatably supported by a bracket 46 fixed to the device frame 44, and a transmission shown by a sprocket wheel in the drawing fixed to the driving shaft 47. Body 48
And the winding transmission 49 is wound around and connected to the PTO shaft 2.
2 and is rotationally driven.

Crankpins 50 and 51 are projected from each of the driving bodies 45 with a circumferential phase shifted by about 180 degrees. The base of the first arm 52 is provided on the first crankpin 50 and the second crankpin is provided on the first crankpin 50. The base of a second arm 53 is rotatably connected to the first arm 5.
The tip of the second arm 53 is rotatably connected to the front side of the articulation link 54 from the pin 52A, and the tip of the second arm 53 is the pin 53A.
The lower part of the relay link 55 is rotatably connected to the apparatus frame 44 via a pin 55A, and the upper part of the relay link 55 is connected to a pin 55B. Is rotatably connected to the rear side of the articulation link.

Here, the claw operating mechanism 42 comprises a four-bar parallel link mechanism 57 composed of first and second arms 52 and 53, an articulated link 54 and a relay link 55, and a counterclockwise The reciprocating movement (reciprocating movement) between the seedling tray 41 and the transplanting part 37 is possible while performing the parallel movement while holding the seedling extraction claw 56 in a substantially vertical posture by the rotation drive (see the arrow in FIG. 1). Have been.

The claw operating mechanism 42 has a cylindrical claw holder 5 on the front side of the articulation link 54 via a rotation holding means 58.
9 is rotatably held, a claw shaft 60 having a seedling removal claw 56 is slidably inserted into the claw holder 59, and a support arm is provided below the claw holder 59 as a downwardly extending shape. 61 is stretched. The lower part of the push-out arm 63 is rotatably connected to the lower part of the support arm 61 via a pin 62, and the upper part of the push-out arm 63 is connected to the claw shaft 60 through an elongated hole and a pin engaging means 64. ing.

The device frame 44 is provided with a claw driving means 65. The claw driving means 65 has a driving arm 65B fixedly mounted on a horizontal driving shaft 65A which is driven to rotate in conjunction with the PTO shaft 22 described above. The lifting arm 65C protruding from the driving arm 65B is positioned behind the pushing arm 63 so as to be able to come into contact with and detach from the driving arm 65B.
The push-out arm 63 is pushed against the return means 66 by the counterclockwise rotation of, and the claw 56 advances (see FIG. 7).

The claw shaft 60 is a round bar as shown in FIG.
In the claw holder 59, the insertion hole of the round bar is a round hole, but the claw shaft 60, that is, the claw shaft 60 and the insertion hole are formed in a square shape to prevent free rotation of the seedling removal claw 56. Can be. The seedling removal claw 56 provided at the tip of the claw shaft 60 is a bifurcated claw, which is provided to be able to advance and retreat with respect to the claw holder 59, and a spring provided at the rear end of the claw holder 59 and the rear end of the claw shaft 60. A return means 66 indicated by a coil spring surrounding the claw shaft 60 with the receiver 66A is urged so as to quickly return in the retreating direction. It is desirable to change the position of the spring receiver 66A with a screw or the like to adjust the elastic force of the coil spring to make the return speed strong or weak.

The support arm 61 of the claw holder 59 is provided with a claw lock means 67. The claw lock means 67 is connected to the support arm 61 by a pin 68 as shown in FIGS. An engaging claw 69 rotatably held by a helical spring, which is urged in the engaging direction around the pin 68 in the engaging direction.
Engaging recess 60A formed at the tip of engaging claw 69 on claw shaft 60
It is supposed to be detachable.

That is, when the tip end of the seedling removal claw 56 is positioned at the entry start position shown in FIG.
The lifting arm 65C moves the pushing arm 63 back to the return means 6
6, the tip side of the seedling removal claw 56 rushes into the seedling soil C, and at the end of the rushing, the engagement claw 69 is formed on the claw shaft 60 by the urging body 70 at the engagement recess 60 </ b> A. And the seedling removal claw 56 is locked.

The apparatus frame 44 in the vicinity of the claw driving means 65 is provided with a stopper shown by a bar, that is, a claw guide means 71. When the claw holder 59 comes into contact with the claw guide means 71 in a substantially vertical posture. The tip side of the seedling extraction claw 56 scoops the leaf C1 of the seedling soil C from below with the rotation holding means 58 as the center.
Or through the lower side of the leaf C1 to enter the rush start position.

A stopper 72 is also provided on the rear side of the device frame 44, and when the claw holder 59 having a substantially vertical posture, which has been retracted by parallel movement, comes into contact with the stopper 72 near the end of seedling supply, the stopper 72 is rotated. Seedling removal claw 5 centering on holding means 58
6 is restricted by the parallel movement of the claw operating mechanism 42 and accelerated downwardly (including inertia force) to the transplanting portion 37, and the engaging claw 69 comes into contact with the releasing means 73. The engaging claw 69 is disengaged from the engaging concave portion 60A of the claw shaft 60 against the force body 70, and the seedling removal claw 56 is retracted through the claw shaft 60 by the return means 66. Seedling soil C is allowed to fall (see FIG. 5).

At the seedling falling position, the rod-shaped pusher 74 is projected from the nail holder 59, and the seedling take-out claw 56 is inserted through the spectacles 74A of the pusher 74, whereby
When the claw 56 retreats, it is desirable to ensure that the seedling C falls from the claw 56 by pressing the seedling C against the eyeglass portion 74A. When the reciprocating motion is performed after the claw holder 59 contacts the front and rear stoppers 71 and 72, the rotation holding means 58 rotates the claw holder 59 and the stopper 7
In the first embodiment shown in FIG. 7, a friction support is provided on a pivot shaft 58A protruding from the claw holder 59 so as not to rotate during the reciprocating movement between the first and second members 72. Insert the boss 58B into the insertion hole 58C of the link 54.
The figure shows the one fitted to.

1 to 6, the trail of the tip of the seedling removal claw 56 is shown as an inverted figure 8 in a reciprocating parallel movement of the claw operating mechanism 42, so that the seedling C is removed in the forward stroke. In the case of X, when the claw holder 59 in a substantially vertical position comes into contact with the stopper 71, the tip side of the seedling extraction claw 56 passes through the lower side of the leaf C1 or the leaf C1 around the rotation holding means 58.
FIG. 4 shows a process of scooping and entering the rush start position on one side (lower side) near the opening edge of the pot portion 40, while taking out the seedling soil C from the pot portion 40 and transporting it to the transplant portion 37. As described above, the tip of the seedling removal claw 56 prevents the leaf C1 from drooping, and the stopper 72 is provided at the transport end portion.
The return stroke Y, whose trajectory is changed when the claw holder 59 having a substantially vertical posture comes into contact with the claw holder 59, crosses at the center of the reciprocation stroke.

Referring to FIG. 8 to FIG.
3, a seedling feeding device 43 includes a transport frame 75 for guiding and supporting the seedling tray 41 so as to be able to be fed vertically, and a base for supporting the transport frame 75 so as to be able to reciprocate in the horizontal direction (left and right direction). And a frame 76. A support plate 76 that supports the bottom of the seedling tray 41 is attached to the transport frame 75 in a forward and downward inclined shape. At the center in the left-right direction of the support plate 76,
As shown in FIG. 10, the guide wall portion 76 that engages with the gap between the pot portions 40 and regulates the lateral movement of the seedling tray 41.
A is bent.

The support plate 76 is extended to the pot portion 40 at a position where the seedling C is taken out by the seedling take-out claw 56 provided in the claw operation mechanism 42. In order to prevent the seedling tray 41 from bending when the seedling extraction nail 56 pierces the soild seedling C, the pot portion 40 at the seedling extraction position is prevented.
Is a supporting member 77 that supports the bottom portion of the first member. This support member 77 is provided with all the pot portions 4 in a row in a row at the seedling removal position.
Preferably, it supports the bottom of the zero. Further, it is not necessary to provide the support plate 76 integrally, and the support plate 76
The support members 77 can be individually attached to the transport frame 75 so as to extend to a position just before the pot portion 40 at the seedling removal position.
Further, the support member 77 is not limited to a plate-like member, and may be a rod-like member, a spherical member, or the like.

A horizontal shaft 78 is rotatably mounted on the transfer frame 75 via a bearing 78A.
A pair of left and right vertical feed wheels 79 are integrally provided on the pair 8. At the inner surface side of the wheel 79, a transport pin 80 that engages with the gap between the pot portions 40 of the seedling tray 41 is detachably attached at an appropriate position in the circumferential direction. The transport pins 80 are selectively mounted in a plurality of mounting holes (not shown) provided in the vertical feed wheel 79, and are mounted at positions corresponding to the pitch between the pot portions 40 of the seedling trays 41. Can be changed.

A drive arm 82 is provided at an end of the horizontal shaft 78 via a one-way clutch 81 (or a ratchet mechanism). The drive arm 82 reciprocates within a predetermined swing angle range. The wheel 79 rotates only in one direction (the direction in which the seedling tray is sent downward). The swing angle of the drive arm 82 is regulated by a regulating member 83 which is attached and fixed to the transport frame 75 so as to be swingable. That is, the regulating member 83 is formed with a notch 84 extending in the circumferential direction corresponding to the swing range of the drive arm 82,
The notch 85 reciprocates once in the notch 84 so that the seedling tray 41 can be transported in the vertical direction by one pitch of the pot 40. This regulating member 83 is
It is urged in a return direction (indicated by an arrow B in FIG. 10) by a coil spring 86 fitted on the horizontal shaft 78.

The wheel 79 is provided with first positioning recesses 87 at a central angle corresponding to one pitch of the pot portion 40 in the circumferential direction. The first positioning recesses 87 are detachably engaged with the first positioning recesses 87. A detent mechanism 88 is provided on the regulating member 83 to position the wheel 79. Note that two fixing holes 89 are formed in the regulating member 83, and one of the fixing holes 89 is selected and fixed to the transport frame 75 by the bolt 90. The notch 84 is formed in a stepped shape so that the movement range of the pin 85 is increased in a posture in which the regulating member 83 is swung as shown by a two-dot chain line in FIG. 41 pots 4
The swing angle of the drive arm 82 can be adjusted in accordance with the zero pitch. Further, a second positioning concave portion 91 is provided on the inner peripheral side of the first positioning concave portion 87 at a central angle different from the central angle in the circumferential direction, and is regulated to adjust the swing angle of the drive arm 82. When the posture of the member 83 is changed, the detent mechanism 88 automatically engages with the positioning concave portion (87 or 91) provided at the center angle corresponding to the pitch between the pot portions 40.

The transport frame 75 is provided with a guide member 92 for guiding and supporting the side edge of the seedling tray 41 so as to bend the seedling tray 41 in the vertical direction along the wheel 79. On the other hand, the base frame 76 is attached to the movable frame 33, and a transverse feed shaft 94 having a traverse groove 93 is attached to the base frame 76 so as to be rotatable. The rotating power of the driving body 45 of the claw operating mechanism 42 is
The power is transmitted via a winding transmission 95, a driving gear 96, a driven gear 97, and the like. The driving gear 96 and the driven gear 9
The gear box 7 is provided in a gear box 98 which is detachably attached to the base frame 76.
By changing the rotation speed ratio between the prime mover 45 and the lateral feed shaft 94 by exchanging the nut, the lateral feed amount of the seedling tray 41 can be synchronized with the operation of the claw operating mechanism 42 according to the pitch between the pot portions 40. It has become.

A slider 100 having an engaging pin 99 for engaging with the traverse groove 93 is externally fitted to the transverse feed shaft 94.
The horizontal feed mechanism is configured to reciprocate the transport frame 75 in the left-right direction via the slider 100 when the horizontal feed shaft 94 is rotationally driven. A bellows-shaped cover 102 is provided between the slider 100 and the base frame 76 so as to be freely expandable and contractable in the axial direction, thereby preventing sand or the like from entering the traverse groove 93.

Crank arms 103 are provided at both left and right ends of the transverse feed shaft 94, and a transmission link 104A is provided on the transfer frame 75 so as to be rotatable around the transverse shaft 104. The transmission link 104A includes an engagement portion 105 that engages with the crank arm 103 when the transport frame 75 moves to the leftmost end or the rightmost end.
And the drive arm 82 are connected by a connection link 107, and the transmission link 10 is
When the arm 4 is swung, the driving arm 82 is reciprocated once. Thus, a vertical transport mechanism is configured in which the seedling tray 41 is transported vertically by one pitch when the removal of the soil seedlings C from the horizontal row of pot portions 40 is completed. The transmission link 103 swung by the crank arm 103 is returned together with the regulating member 88 by a coil spring 86 that returns the regulating member 83.

FIGS. 13 and 14 show a second embodiment of the rotation holding means 58. FIG. In the second embodiment, the articulated links 54 are paired on the left and right, and the pivot shafts 58A project from the claw holder 59 on both left and right sides and are rotatably held on the articulated links 54, respectively. Are respectively fitted with vine winding springs 120, and the vine winding springs 12
0 is engaged with the claw holder 59 before and after the pivot shaft 58A, and the other end is engaged with each of the articulation links 54, so that the pair of left and right vine winding springs 120 maintain the balance. Since other configurations are common to the first embodiment described above, common portions are denoted by common reference numerals.

As the rotation holding means 58, a washer, a disc spring or the like is fitted over the pivot shaft 58A of the second embodiment, and the disc spring is adjusted in elasticity with a bolt and nut. It is also possible to use a structure in which the claw holder is held by applying a resistance and the claw holder can be turned against the resistance. 1 and the like, a screw rod having a lock nut is screwed into a bracket so that the position can be adjusted.
Can also be used.

Further, in FIG. 11, the seedling feeding device 43 is inclined forward and downward, and a seedling removal claw 56 is provided in front of the device.
May be disposed on the rear side, or the device 43 and the claws 56 may be disposed on the left and right instead of on the front and rear.

[0047]

According to the present invention described in detail above, the nail for removing seedlings
When the distal end side to advance the seedling soil inrush starting position, the lower leaf
Since the leaves are passed or the leaves are scooped , the leaves are not stabbed or fallen, and the vigor and growth are not impaired. Also, below the opening edge of the pot part
Since taking out the distal end side of the seedling taking out nails entered a seedling soil to leave an opening edge upper side of the pot part seedlings soil in a substantially V-shaped trajectory on the side, reliably even if the strength of root spread pot portion Seedlings can be taken from

Further, since the nail operating mechanism for reciprocating the seedling extracting nail between the pot portion and the transplanting portion is a parallel link, it is more accurate than the one using a cam, a long hole, etc., with less play and less wear. Can work.

[Brief description of the drawings]

FIG. 1 is a main part side view of a seedling rush start position according to a first embodiment of the present invention.

FIG. 2 is a side view of the main part after the seedling has entered.

FIG. 3 is a side view of a main part when seedlings are taken out from a pot portion.

FIG. 4 is a side view of a main part of the seedling soil during transport (supply) to the transplanting unit.

FIG. 5 is a side view of the main part in a state where the seedling soil has been delivered to the transplanting unit.

FIG. 6 is a side view of a main part of the same potion on the way to the pot for taking out seedling soil.

FIG. 7 is an elevation view of the claw operation mechanism.

FIG. 8 is a main part side view showing a relationship between the seedling feeding device and the claw operation mechanism.

FIG. 9 is a front view of a lateral feeding means in the seedling feeding device.

FIG. 10 is a front view of the seedling feeding device.

FIG. 11 is a side view showing the entire vegetable transplanter.

FIG. 12 is a plan view showing the entire vegetable transplanter.

FIG. 13 is a side view showing a second embodiment of the rotation holding means.

FIG. 14 is a plan view of the same.

[Explanation of symbols]

 37 transplanting part 40 pot part 41 seedling tray 42 nail operating mechanism 56 seedling removal nail 57 parallel link 59 nail holder 65 nail driving means 71 nail guiding means

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-6-311805 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) A01C 11/00-11/02 303 A01C 11 / 02 365

Claims (5)

(57) [Claims] A pot portion (4) in a seedling tray (41).
0) seedlings soil (in of inrush a distal end side of the seedling taking out claw (56) C)
Then the tip of the seedling removal claw (56) from the pot (40)
The seedling (C) is taken out of the pot portion (40) by retreating from the side, and the taken seedling soil (C) is supplied to the transplant portion (37). Naedo when the lower lateral side near the edge and rush starting position of the tip side of Naedo (C) said seedling taking out pawl for (56), to advance the distal end side of the seedling taking out pawl (56) to the rush starting position (C) , it passes through the lower side of the leaf (C1) , and the tip end side of the seedling extraction nail (56) extends from the entry start position toward the depth of the pot portion (40) in the depth direction. when exiting from the pot part (40) from the rush along the direction, in seedling extraction claw (56) by a pot portion end position out retractable and the lower side in (40) that faces the upper side in Tip on the tip side
The trajectory at the point (40) is set as a substantially V-shaped trajectory
A method for removing and supplying seedlings of a transplanter, wherein (C) is removed from the pot portion (40) . 2. A pot portion (4) in a seedling tray (41).
The seedling removal claws (56) enter and leave the seedling soil (C) of 0).
To remove the seedlings (C) from the pot (40)
A method of supplying the taken seedling soil (C) to the transplanting part (37)
And the lower side near the opening edge of the pot portion (40) is seedling soil.
(C) on the tip side of the seedling removal nail (56)
A rush start position, and the seedling removal claw is located at the rush start position.
Leaves on seedlings (C) when moving forward on the tip side of (56)
(C1) is entered so as to be scooped, and from the entry start position
Removing the seedlings toward the depth of the pot (40)
After the tip of the claw (56) is inserted, the pot (40)
When exiting, the exit end position is determined by the pot portion (40).
Substantially V-shaped reciprocating motion that is the upper side opposite to the lower side
Trajectory removal and supply method of transplanting machine characterized by locus
Law. 3. A pot portion (4) in a seedling tray (41).
Insert the tip of the seedling removal claw (56) into the seedling soil (C) of 0).
Then the tip of the seedling removal claw (56) from the pot (40)
The seedlings (C) from the pot (40)
The seedling soil (C) is supplied to the transplanting part (37).
The seedling removal nail (56) is attached to a nail holder (59) in the nail longitudinal direction.
Retractably Bei Erare along the distal end side of the seedling taking out claw (56), the pot portion (4
0) the seedling removal position and the seedling supply position of the transplanting part (37)
A claw operating mechanism (42) that reciprocates between
The rudder (59) can be freely rotated and held by the claw operating mechanism (42).
The tip side of the seedling removal nail (56) is further attached to a nail holder (5).
9) through the lower side near the opening edge of the pot portion (40)
And when entering the starting position of nail penetration, in seedlings (C)
Through the lower side of the leaf (C1) or scoop the leaf (C1)
Claw guide means (71) for entering the seedling removal claw (56) at the leading end position.
When the seedling removal claw (56) is in contact with the pot portion (4)
0) and then into the depth direction
(40) When exiting, the exit end position is set to the pot portion.
(40) The seedling is set as the upper side opposite to the lower side.
A gauge in the pot portion (40) on the tip side of the extraction claw (56).
A nail driving means (65) having a substantially V-shaped mark is provided.
A seedling removal and supply device for a transplanter, characterized in that: 4. The parallel link mechanism according to claim 1, wherein the pawl operating mechanism is a parallel link mechanism.
The method according to claim 3, wherein (57) is constituted.
The described device. 5. A pot portion is provided at the tip end of the seedling removal nail (56).
The seedling (C) taken out from (40) is supplied to the transplanting part (37).
When feeding, support the leaves (C1) in the seedling soil (C)
It has a part that prevents dripping
An apparatus according to claim 3.