JPH0974830A - Seedling-taking out tine in transplanter and tine guide tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seedling-taking out tine in a transplanter capable of preventing the falling off of seedling soil, surely transferring the seedling in a divided state and having an increased working efficiency by producing it using a bar material and forming a flat surface along the longitudinal direction of the bar on the side supporting seedling soil during the transfer. SOLUTION: The seedling-taking out tine 4 takes out seedling soil 5 from a pot part 3 in a seedling tray 2 by coming into and retreating from the pot part 3 and transfers it to a planting cylinder 43 of a planting apparatus 35 in a divided state. The seedling-taking out tine 4 is produced using a bar material 104 and it has a flat surface 204 along the longitudinal direction of the bar material on the side supporting the seedling soil 5 during transfer. Further, the flat surface 204 is preferably formed covering roughly all the length of the bar material 104 starting from the front end of the tine.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling removing claw and a claw guide for a transplanter and is used for transplanting vegetables such as cabbage and lettuce.

[0002]

2. Description of the Related Art A vegetable transplanting machine for growing seedlings in a seedling tray having a pot portion in a vertical and horizontal lattice arrangement, and taking out seedling soil (soiled seedlings) from the pot portion and transplanting the seedlings is well known. Is trying to mechanize. As disclosed in Japanese Patent Laid-Open No. 4-330211, this type of vegetable transplanting machine has a pair of seedling take-out nails that are capable of plunging into the seedling soil in the pot section of the seedling tray and the pair of seedlings. Claw supports provided at the tips of the picking claws separated from each other, a pair of claw guides for guiding the advance and retreat of a pair of seedling picking claws, and a holding body for reciprocally supporting the claw support and the claw guides, respectively. When,
And a claw operation mechanism for reciprocating the claw support and the claw guide.

Then, the seedling take-out claws are inserted into and retracted from the opening side of the pot section to take out the seedling soil from the opening of the pot section, and the taken seedling soil is transferred to the upper part of the planting device (minutes). After moving the nail support and the nail guide to a substantially downward posture corresponding to the planting tube, move the nail guide to the tip of the seedling picking nail and seedling the seedling taken out by the seedling picking nail. It is designed to be detached from the take-out claws and dropped and supplied to the planting device.

The seedling take-out pawl in the seedling take-out device of the transplanter is composed of a round bar having a circular cross section.

[0005]

In the above prior art, when the seedlings are pierced by the seedling take-out claws and fed toward the planting cylinders in the planting device, the holding force of the seedlings is weak, so that the seedlings are separated. There was a risk that the seedlings being sent could accidentally fall out of the picking nails, which was one of the reasons for the stock stalls.

[0006] On the other hand, when the seedling take-out nail having a rectangular cross section, that is, a flat plate-like shape, is used to increase the holding power of the seedling soil, the resistance to pierce the seedling soil in the pot portion becomes large, and the seedling soil is easily deformed. There was a risk that it would be virtually impossible to remove the seedlings from the pot. Therefore, the present invention, by devising the cross-sectional shape of the seedling extraction nail made of a rod, while suppressing the resistance to stab the seedling soil in the pot portion, it is possible to increase the seedling soil holding force during feeding. The main purpose is to do.

Another object of the present invention is to provide a nail guide tool capable of scraping the adhered soil that adheres to and grows on the seedling removing nail.

[0008]

According to the present invention, the seedling soil 5 is taken out from the pot portion 3 by plunging into and leaving the pot portion 3 in the seedling tray 2, and a planting device 35 is also provided.
Seedling take-out nails 4 of a transplanter that is delivered to and delivered to the planting cylinder 43 of
In order to achieve the above main purpose, the following technical measures are taken.

That is, the seedling take-out nail 4 in the present invention
Is characterized in that a flat surface 204 is formed along the longitudinal direction of the rod on the support side of the seedling soil 5 that is being fed and is made of the rod 104. By this, the seedlings 5 being sorted are transported (divided) while sufficiently maintaining the holding force on the flat surface 204, and the seedlings 5 are prevented from accidentally falling in the middle (claim) 1).

The flat surface 204 is characterized in that it is formed over the substantially entire length of the bar 104 from the tip of the claw. By adopting such a configuration, the flat surface 204 It is easy to form (claim 2). Further, in the present invention, the tip of the seedling picking-out claw 4 which projects into the pot portion 3 in a substantially horizontal posture has a tapered surface 304 facing upward in a side view and a tapered tapered surface 40 in a plan view.
4 and 504, and by adopting such a configuration, the resistance when piercing the seedling soil 5 in the pot portion 3 becomes small, while the seedling soil 5 The seedling 5 is not excessively compressed by the pot 3 when the seedling 5 is pulled out from the pot 3, and the shape of the seedling 5 is securely prevented (claim 3).

Further, the flat surface 204 is characterized in that a slit 604 along the longitudinal direction of the rod is formed, and by adopting such a constitution, the holding force of the seedling soil 5 is increased. It will be even larger (claim 4). Furthermore, the present invention is a nail guide tool 6 for guiding the seedling take-out nail 4 in the longitudinal direction of the rod, wherein an insertion hole 11a for the nail is formed, and the insertion hole 11a is attached to the flat surface 204 or the slit 604. The present invention is characterized by having a scraped soiled soil scraping portion 116. By adopting such a configuration, it is possible to reliably prevent the soil from adhering to the seedling taking-out nail 4 and to prevent the seedling taking-out nail 4 from growing. Smooth forward and backward movements (Claim 5).

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 12 to 14 show the entire passenger transplanter 21, which is used as the passenger traveling vehicle 2.
2, which is equipped with a transplanting device 23 at the rear of the plant, and automatically planting seedling soil 5 (soil block seedlings) at predetermined intervals in each ridge while traveling in the longitudinal direction across two ridges. Is.

The traveling vehicle 22 is provided with an engine, a fuel tank, etc., covered with a hood 25, and a steering section 26 provided with a steering wheel, on the front portion of a body frame 24.
A driver's seat 27 is provided at the rear of the control unit 26, and the main body frame 24 is movably supported by a pair of left and right front wheels 28 and a pair of left and right rear wheels 29. The front wheels 28 are steering wheels, and the rear wheels 29 or the front and rear wheels 2 are used.
Power from the engine can be transmitted to 8 and 29, and a preliminary seedling stand 30 is provided on the left and right sides of the bonnet 25.

The transplanting device 23 is provided with a carrier device 34 on the upper front side of the main frame 33 for intermittently feeding the seedling trays 2 containing a large number of seedling soils 5 vertically and horizontally. A planting device 35 provided below the main frame 33 by taking out the seedlings 5 one by one from the seedling tray 2.
The seedling take-out device 1 for delivering to the main frame 33 is provided, and a soil covering / squeezing roller 36 is provided below the rear portion of the main frame 33 to mainly configure the main unit.

The seedling tray 2 is made of plastic, is thin and has flexibility, and is provided with a large number of pot portions 3 arranged in a grid pattern at a predetermined pitch in the vertical and horizontal directions. The parts are connected to each other in a planar shape, and a drain hole is formed in the bottom of the pot part 3.
Then, the pot portion 3 is filled with bed soil, and the seed soil 5 is cultivated by sowing and raising the seedling there.

The main frame 33 is supported at the rear portion of the vehicle body frame 24 of the traveling vehicle 22 so as to be able to move up and down via a three-point link mechanism 38 consisting of a top link 38a and a pair of left and right lower links 38b, and is supported by the vehicle body frame 24 and the top. A hydraulic cylinder 39 is provided between the link 38a and the implanting device 23 so that the implanting device 23 can be moved up and down.

The planting device 35 includes a horizontal frame 4 on the main frame 33.
The power to be transmitted from the PTO shaft of the traveling vehicle 22 via the power transmission means 44, which supports the planting cylinder 43 via the swinging link mechanism 42 on the movable frame 41 which is vertically movably supported via 0. Thus, the planting cylinder 43 can be operated so as to draw a long elliptical locus in the vertical direction. The planting cylinder 43 is provided with an opener that can be opened and closed at the bottom, and the opener opens back and forth when it enters the ridge at the lower end side of the elliptical locus to form a planting hole and the upper end of the locus to the planting hole. The seedlings 5 supplied by the side can be planted.

The soil covering / squeezing roller 36 is supported by a movable frame 41 via a support arm 46, and height adjusting means 47 is provided between the movable frame 41 and the support arm 46, and the rear end of the support arm 46 is provided. Engages with a long hole 48a of a lifting limit member 48 provided on the main frame 33. The ascending / descending operation of the movable frame 41 can be interlocked with a control valve that operates the hydraulic cylinder 39 via the ascending / descending operation transmission means 49, and the height of the ridge changes significantly, so that the rear end of the support arm 46 moves up and down. When there is a large vertical movement from the approximate center of the elongated hole 48a of the restriction member 48, the height of the transplantation device 23 is adjusted by operating the hydraulic cylinder 39.

As shown in FIGS. 1 to 11 and 14, the seedling take-out device 1 takes out the seedling soils 5 one by one from the pot portion 3 of the seedling tray 2 at a predetermined seedling takeout position with respect to the transport device 34, and The seedling 5 is transferred to above the planting cylinder 43 of the planting device 35 and dropped. The seedling taking-out device 1 includes a pair of needle-shaped seedling taking-out nails 4, a nail support 8 provided with the pair of seedling taking-out nails 4 at the tips thereof, and a nail guide 6 for guiding the pair of seedling taking-out nails 4 back and forth. A holding body 9 that supports the claw support 8 and the claw guide 6 so as to be reciprocally movable in the longitudinal direction, and a claw operation mechanism 10 that appropriately operates the claw support 8 and the claw guide 6.

The pawl operating mechanism 10 reciprocates the seedling take-out pawl 4 between the seedling tray 2 and the planting cylinder 43 while changing the posture thereof, and supports the support frame 14 fixed on the main frame 33. This support frame 14 has a PT
A rotary shaft 51 is provided with a crank body 52 that is driven to rotate counterclockwise in FIGS. 1 and 5 by rotational power from the O-axis. A crank pin 53 is provided on the crank body 52 so as to protrude laterally via an arm, and a drive cam 52A is provided coaxially with the crank body 52.

A lower portion of the swing arm 54 is pivotally connected to the support frame 14 below the crank body 52 by a swing shaft 54A, and a middle portion of the swing arm 54 is vertically (arm lengthwise). Direction) is formed, and the crank pin 53 of the crank body 52 is formed in the long hole 55.
The pawl operating mechanism 10 is swung for the swing arm 54 to pick up the seedlings 5 to the transport device 34, and the return stroke time is short, while the seedling device 35 is swung. A quick return mechanism is configured in which the forward stroke time of rocking for supplying the soil 5 is longer.

That is, the pot portion 3 is formed by the seedling take-out nail 4.
During the return stroke Y for taking out the seedlings 5 from the soil, the movement is accelerated, and the seedlings 5 are taken out from the pot part 3 and the planting cylinder 4
At the time of the forward path X to be delivered to 3, make a slow movement,
We are trying to improve the efficiency of seedling extraction and supply while preventing the seedling soil 5 from falling during transfer. The holder 9 is pivotally connected to the upper part of the swing arm 54 via a pin 54B. This holder 9
Has a tubular shape at the portion where the pin 54B is provided,
A claw support 8 made of a pipe is inserted and guided in the tubular portion so as to be movable in the axial direction, and the claw support 8 can be moved toward and away from the seedling tray 2 of the transport device 34. A pair of seedling take-out nails 4 that are pierced obliquely into the seedling soil 5 in the pot portion 3 are attached to the tip ends of the nail supporters 8.

The seedling take-out nail 4 is made of metal, hard resin or the like and has a circular cross section 104, and is flat along the longitudinal direction of the rod on the supporting side (upper surface) of the seedling soil 5 during feeding (step X). Face 204
Are formed. As shown in FIG. 9 (A), this flat surface 204 is formed over the substantially entire length of the bar 104 (range of reference numeral T) from the tip of the claw, and in the case of a metal bar, it can be easily cut or the like. A flat surface 204 can be formed on the surface.

The tip of the seedling picking-out nail 4 has an upward tapered surface 304 in side view (see FIGS. 6 and 7) and tapered tapered surfaces 404, 504 in plan view (see FIG. 9 (A)).
And formed. In addition, the flat surface 204 is shown in FIG.
As shown in (C), a slit 604 is formed from the tip of the claw to substantially the entire length of the bar member 104.
Are V-shaped and U-shaped in cross section, and the number is 1 or 2-3.
It is a book.

A roller 57 is attached to the holder 9 via a bracket 56 so as to be freely rotatable.
7 is engaged with a cam groove 60 formed in a guide plate 59 that is swingably attached to the upper portion of the support frame 14 via a pin 58. The guide plate 59 has a rolling roller 61 at the tip of the protruding arm, and the rolling roller 61 is in contact with the drive cam 52A, and the guide plate 59 is pinned by the counterclockwise rotation of the drive cam 52A. It is possible to swing about 58.

The swinging of the guide plate 59 about the pin 58 causes the leaf 5 of the seedling to grow from the front of the entry start point (see FIG. 1) when the seedling take-out claw 4 advances toward the pot 3. Pin the tip of the seedling take-out nail 4 with the pin 5
4B is swung, and the posture of the holding body 9 (in particular, the relative angle of the holding body 9 with respect to the swing arm 54) according to the swing angle of the swing arm 54 is regulated.

That is, when the seedling 5 is pulled out from the pot portion 3 (from the state shown in FIG. 1 to the state shown in FIG. 2), the relative angle of the holder 9 with respect to the swing arm 54 does not change so much. The front side (right side in FIG. 1) of the cam groove 60 is shaped so as to move the roller 57 around the swing shaft 54A of the swing arm 54. As a result, the seedling extraction nail 4
The seedling 5 is slowly picked up from the pot part 3 while drawing a locus around the swing shaft 54A of the swing arm 54.

That is, regardless of the size of the seedling tray 2, the seedling take-out claws 4 are inserted into the seedling soil 5 with reference to the opening edge of the pot portion 3 as shown in FIG. Then, at the plunging start end, the guide portion 11 formed at the tip of the claw guide 6 is pressed against the opening edge of the pot portion 3 so that the pot portion 3
Sloping in the depth direction of the pot, and then pulling out the seedling take-out claws 4 approximately in parallel with the axial direction of the pot part 3 to detach the seedling 5 with soil without compressing it in the pot part 3, It prevents the shape of the.

Here, the tip of the seedling picking nail 4 is a tapered surface 304 which is upward in a side view and is tapered in a plan view.
Since it is set to 04,504, there is little rush resistance when rushing into the seedling soil 5 from the opening edge of the pot portion 3, and even the seedling soil 5 with strong rooting can be reliably pierced,
Since the upwardly tapered surface 304 is used, the seedling 5 is not excessively compressed in the pot portion 3 and the shape of the seedling 5 is reliably prevented from deforming.

The seedling soil 5 taken out from the pot portion 3
When the seedlings are transferred to the upper part of the planting cylinder 43 (from the state shown in FIG. 2 to the state shown in FIG. 3), the seedling take-out claw 4 is moved largely backward and downward, and is changed to a substantially downward posture, so that the seedling soil 5
To a substantially vertical position. Therefore, the rear side (left side in FIG. 2) of the cam groove 60 is shaped to move the roller 57 in a direction away from the swing shaft 54A of the swing arm 54.

That is, when the seedling picking nail 4 stabs the seedling 5 in a state of being greatly moved rearward for feeding, the shoulder portion of the seedling 5 is pressed by the guide portion 11 formed at the tip of the nail guide 6. The seedlings 5 are sent while being prevented from being accidentally dropped. Here, when the seedling 5 is pierced and fed backward, the flat surface 204 of the seedling take-out nail 4 causes the seedling 5 to move.
The holding force is used to prevent accidental disengagement from the nail. In the embodiment in which the slit 604 is formed on the flat surface 204, the holding force is increased and the seedling soil 5 is unexpectedly fed. Surely prevents the falling out of the planting cylinder 43
Definitely deliver to.

On the outer periphery of the claw support 8, as shown in FIGS. 6 to 9, the claw support 8 is retracted between the base body 65 provided at the base end thereof and the tubular portion of the holding body 9. A coil spring 66 that urges in the direction is interposed, and a claw attachment 67 is fitted and fixed to the front end portion of the claw support 8. The bases of the pair of seedling take-out claws 4 are respectively attached to the shaft 4 on the claw attachment 67.
The seedling take-out nails 4 are pivotally supported as shafts by bending the base portion of the seedling take-out nails 4 at a right angle, and the pair of seedling take-out nails 4 can be swung so that the tips of the seedling take-out nails 4 move relative to the nail fixture 67. It has become.

An extruding link 6 is provided at the lower end of the holding body 9.
8 is rotatably connected via a pin 69. A long hole (or long groove) 70 is formed at the tip of the push-out link 68, and is engaged with a pin 71 provided on the protruding arm of the claw attachment 67. A cam plate 73 is provided on the push-out link 68, and the cam plate 73 can contact the crank pin 53 of the crank body 52. When the swing arm 54 is located at the swing end on the side of the transport device 34 (see FIG. 1), the pushing link 68 is swung by the rotating crank pin 53 via the cam plate 73, and the holder 9 is held. On the other hand, the claw attachment 67 and the claw support 8 are pushed toward the transport device 34 side to compress the coil spring 66. As a result, the seedling take-out claw 4 is projected and the claw support 8 has a restoring force for retracting.

Reference numeral 6 denotes a claw guide (hereinafter referred to as a claw guide) which is slidably inserted in the claw support 8, the base 65 and the claw mount 67 in the longitudinal direction, and is formed of a round bar or the like. A member forming the guide portion 11 is attached to the front end across both seedling picking nails 4, an L-shaped plate-like actuating member 76 is attached to the rear end, and a stopper 77 is fixed to the middle portion.
A spring 78 is fitted between the stopper 77 and the base body 65.

As shown in FIGS. 8, 9 and 11, the claw guide 6
Are triangularly arranged with respect to the two seedling take-out nails 4, two guide-insertion holes 11a are formed in the guide portion 11, and the intervals between the left and right claw-insertion holes 11a are the pivotal support portions of the left and right take-away nails 4. The distance is set to be narrower than the distance K (the distance between the shafts 4a, which are the pivot portions). Therefore, when the seedling take-out nail 4 and the nail guide 6 move relative to each other, the distance L between the tip ends of the seedling take-out nail 4 changes. That is, when the guide portion 11 is located on the tip side of the seedling taking-out nail 4, the distance L between the nail tips is widest, and if the guide portion 11 is immovable and the seedling taking-out nail 4 is projected from this state, the seedling The base side of the take-out claw 4 approaches the guide portion 11, and the distance L between the claw tips gradually decreases.

Therefore, in order to take out the seedlings 5 from the pot part 3, when the seedlings 5 are moved forward, the tips of the left and right seedling picking nails 4 approach each other while sticking out, and the left and right centerlines S of the seedlings 5 are moved.
It will move on a substantially linear orbit inclined with respect to. Further, when the seedling soil 5 is taken out by the seedling take-out nail 4, when the guide portion 11 of the nail guide 6 is moved from the state of being located on the base side of the seedling take-out nail 4 to the tip side, the distance L between nail tips is set.
Becomes wider from a narrow state, and in parallel to this, the guide portion 11 comes into contact with the seedling soil 5 and pushes out from the seedling take-out nail 4.
At this time, the tip of the seedling take-out claw 4 with respect to the seedling 5 will be removed in the same orbit as the plunging orbit, and damage to the seedling 5 will be minimized during the plunging and the detaching.

The seedling take-out nail 4 made of a rod 104 slidably inserted into a nail insertion hole 11a formed in the guide portion 11.
Is a through hole 11a that matches the cross-sectional shape of the rod 104, so that the edge of the hole is substantially scraped portion 11b.
It has been. That is, the soil adhering to the surface of the rod 104 is peeled off by the scraping portion 11b as the rod 104 slides.

Therefore, the slit 6 is formed on the flat surface 204.
When 04 is formed, the slit 60 is formed in the insertion hole 11a.
The convex ridge 11c conforming to No. 4 will be formed. In addition,
Although the claw guide 6 is inserted into the claw support 8 and arranged in a double shaft shape, it may be separated from the claw support 8 and arranged in parallel vertically or horizontally, It can also be arranged between the seedling take-out nails 4.

In the side view shown in FIG. 6 etc., the seedling take-out nail 4 is far from the center line S of the seedling soil 5 in the pot portion 3 on the front surface side (opening edge side of the pot portion 3) and on the bottom surface side. It is inclined so that it can be approached, so that the seedlings 5
Has a truncated truncated pyramid shape, it can pierce the two seedling extraction claws 4 from the lower two corners of the surface to the center of the bottom, without piercing the leaves and roots of the seedling 5, and in addition to that. Since the tips of the left and right seedling pick-up claws 4 are narrowed, they do not collide with the vicinity of the bottom of the pot part 3.

6 to 9, an operating piece 81 is pivotally supported on the holding body 9 through a shaft 82 and is urged clockwise by a spring in FIG. 6, and the operating piece 81 is one foot. The left arm has a lock portion 81A, the right arm has a release portion 81B, and the foot has a pushing portion 81C. The operating member 76 fixed to the claw guide 6 has a portion 76A parallel to the claw guide 6,
The slide of this portion 76A is guided by the holding body 9 in a non-rotating state, and the operating piece 8 protruding on the sliding surface thereof.
By engaging with the first lock portion 81A, the movement of the claw guide 6 in the protruding direction is restricted.

A lock arm 83 is pivotally supported on the base body 65 at the rear end of the claw support 8, and the lock arm 83 is supported.
Is urged clockwise by a spring, and an engaged portion 83a engageable with the engaging portion 9a of the holding body 9 is provided on the front side.
, An inclined surface 83b, and a projection 83c protruding forward are formed. When the claw support 8 is projected, the engaged portion 83a of the lock arm 83 is engaged with the engaging portion 9a of the holding body 9 to maintain the state, and the operating piece 81 is rotated to lock the claw support 8. The lock of the actuating member 76 with respect to the portion 76A by 81A is released, the claw guide 6 projects, and the portion 76A abuts the inclined surface 83b.
Even if the engaged portion 83a is disengaged from the engaging portion 9a, and the disengagement is incomplete, the release portion 81B pushes up the projection 83c by the further rotation of the operating piece 81, and the engaged portion 8a.
3a is forcibly disengaged from the engaging portion 9a.

The pushing portion 81C of the actuating piece 81 is adapted to be rotated by contacting a lock releasing member 84 provided on the guide plate 59 so that the position thereof can be adjusted. When it moves to the state of FIG. 3 in which the claw 4 is in a substantially downward posture, it abuts on the lock releasing member 84 to cause the claw guide 6 to project, and then the claw support 8 is retracted together with the claw guide 6. The lock releasing member 84 is formed of a bolt or a pin.

The holder 9, the crank body 52, the drive cam 52A, the swing arm 54, the guide plate 59, the pushing link 68, and the like support the claw guide 6, the claw support 8, and the like, and the pot portion 3 of the seedling tray 2. From the seedling picking posture toward the planting cylinder 4
A claw movement mechanism 10 that moves while changing the posture to a substantially downward seedling detachment posture facing 3 and takes out the seedling 5 in the seedling take-out posture and drops the seedling 5 in the seedling detachment posture.
Is configured.

Further, the operating piece 8 having the lock portion 81A
1, the operating member 76, the lock arm 83, and the like, when the claw guide 6 is moved to the claw tip side, the claw support 8 and the claw guide 6
The return interlocking means 12 for simultaneously retracting and is configured, and the operation piece 81 having the releasing portion 81B, the lock arm 83, and the like constitute the return ensuring means 13 for ensuring the return operation of the claw support 8 after the operation of the return interlocking means 12. Has been done.

In FIGS. 3 and 11, reference numeral 15 is a rounded tongue-shaped removal guide body whose upper and lower sides are open, and which is attached to a bracket 87 protruding from the support frame 14 so that the position thereof can be adjusted. Is arranged above the planting cylinder 43. This detachment guide body 15 is used for the seedling picking nail 4.
When it takes a substantially downward (slightly inclined) posture, it surrounds the seedling take-out claw 4 and the claw guide 6, and comes into contact with the seedling soil 5 that is separated from the seedling take-out claw 4 by the claw guide 6 and falls. And hold the seedling soil 5 in a proper posture or correct the improper posture.

The separation guide 15 is made of metal, synthetic resin,
The spring material may be formed into a flat plate shape, a half cup shape, a rod shape, or the like, and a contact surface with the seedling soil 5 is formed into a shape that can guide the seedling soil 5 in an appropriate posture. Next, a seedling taking-out operation of the seedling taking-out nail 4 by the nail operating mechanism 10 will be described. In the state of FIGS. 1 and 8, the holding body 9 is at the position closest to the seedling tray 2, and when the crank pin 53 rotates in the central arc portion of the elongated hole 55 of the swing arm 54 from this state, the pushing link 68 is swung about the pin 69, and the nail support 8 and the seedling picking nail 4 are moved to the pot portion 3 via the nail attaching tool 67.
Move it toward the seedling 5 inside.

At this time, as shown in FIG. 6, the claw guide 6
Is immovable because the operating member 76 is in contact with the operating piece 81, and the base body 65 advances, so that the spring 66,
78 is compressed, the engaged portion 83a of the lock arm 83 engages with the engaging portion 9a of the holding body 9, and the return operation is blocked. Further, since the seedling take-out claws 4 move forward with respect to the immovable guide part 11, the pair of left and right seedling take-out claws 4 are restricted by the claw insertion holes 11a of the guide part 11 which are narrower than the interval K between the pivot parts, and the seedling take-out claws 4 are cut. Pierces the seedling 5 while advancing the tip of the and while narrowing the distance L between the tips of the nails.

At the time of this sticking, the tip of the seedling take-out nail 4 has an upward tapered surface 304 and a tapered tapered surface 404.
Since 504 is formed, the piercing resistance is small and it is possible to rush smoothly, and the seedling soil 5 is not excessively compressed in the pot portion 3. Further, in a side view, the piercing direction of the seedling take-out nail 4 is inclined with respect to the center line S of the seedling soil 5,
It does not penetrate the stems and roots of seedlings.

In this stuck state, the left and right seedling take-out nails 4
Shows a wide V from the two-dot chain line state in FIG. 9 to the solid line state.
It changes from a letter shape to a narrow V shape. The V-shaped state of the seedling take-out claw 4 is such that the seedling soil 5 is less likely to come off than in the case of being parallel and can be taken out strongly from the pot part 3, and the seedling soil 5 is not pinched at the time of change. Therefore, the seedling soil 5 is not damaged.

At this time, the bottom portion of the pot portion 3 at the seedling take-out position is supported by the backing member 89, and the seedling tray 2
The deformation of the seedlings is prevented, and the stable extraction of the seedling soil 5 by the seedling extraction nails 4 is guaranteed. When the crank body 52 rotates after completion of the stab of the seedling soil 5 by the seedling take-out claw 4, the swing arm 54 swings leftward via the crank pin 53,
Both the seedling take-out claw 4 and the claw guide 6 are separated from the seedling tray 2 and moved on the forward path X through the state of FIG.

When the holder 9 is moved along the forward trajectory X, the rollers 57 provided on the holder 9 are guided by the cam grooves 60 of the guide plate 59, whereby the seedling take-out pawls 4 and the pawl guides 6 are in a substantially horizontal take-out posture. When the roller 57 moves to the vicinity of the rear end of the cam groove 60 when the roller 57 is changed to a substantially downward disengagement posture shown in FIG. 3, the pushing portion 81C of the operating piece 81 is unlocked by the unlocking member 8.
Start contacting 4.

During the feeding on the forward trajectory X,
Since the flat surface 204 of the seedling take-out nail 4 supports the piercing seedling 5 and the holding force thereof is large, even if a large inertial force is applied, accidental omission of the seedling 5 is reliably prevented. When the operating piece 81 comes into contact with the lock releasing member 84 and starts to rotate (operation of the return interlocking device 12), the lock portion 81A releases the lock of the operating member 76, and the claw guide 6
Is elastically projected by the spring 78 which has been compressed until then, as shown in the chain double-dashed line in FIG. 3 and FIG.
The seedling soil 5 that has been stabbed is pushed out and released by advancing toward the tip side of the nail with respect to the stationary seedling removing nail 4.

At this time, the guide portion 11 of the claw guide 6 is contacted with a large surface that does not damage the seedling soil 5, and the detached seedling soil 5 is guided by the detachment guide body 15 so that its posture is properly adjusted. Then, it drops toward the planting cylinder 43 of the planting device 35 and is delivered. When the pawl guide 6 is projected, the unlocked operating member 76 moves integrally,
As shown in FIG. 7, the portion 76A comes into contact with the inclined surface 83b of the lock arm 83 to release the engagement between the engaged portion 83a and the engaging portion 9a. Therefore, the claw support 8 held in the protruding state is elastically retracted by the spring 66 in the compressed state.

At this time, the operating member 7 at the rear end of the claw guide 6
Since 6 is in contact with the back surface of the base body 65 via the cushion 88, the claw guide 6 is also retracted as the claw support 8 is retracted, and both are quickly retracted by the spring 66, so that the falling seedling soil 5 is prevented. Contact of the claw guide 6 with the leaves is avoided as much as possible. If the portion 76A cannot lift the inclined surface 83b of the lock arm 83 due to some reason such as the movement resistance of the claw guide 6 being too large, when the roller 57 moves to the rear end of the cam groove 60, the lock is generated. Release member 84
The operating piece 81 is further rotated by this, and the lock arm 83 is rotated via the projection 83c at the releasing portion 81B (ensuring means 1
3), the engaged portion 83a is forcibly disengaged from the engaging portion 9a, and the backward movement of the seedling take-out claw 4 is ensured. As a result, even if the seedling soil 5 on the seedling taking-out nail 4 cannot be removed by the nail guide 6, the seedling taking-out nail 4 is retracted so that the seedling soil 5 hits the nail guide 6 and is removed.

By removing the seedling soil 5 and sliding the seedling picking-out nail 4 in the insertion hole 11a formed in the guide 6, the rod 1
The adhered soil 04 is peeled off by the scraping portion 11b,
It does not grow adherently. Then, as shown in FIG. 4, both the seedling take-out claw 4 and the claw guide 6 are returned to the retracted position, and the operating member 76 is locked. The rotation of the crank body 52 from this state causes the swing arm 54 to swing rightward,
While moving the holding body 9 to the state of FIG. 1 while changing its posture,
The seedling take-out claw 4 is quickly returned on the backward movement path Y.

In this movement on the backward movement path Y, the seedling take-out nail 4
And before the nail guide 6 approaches the seedling tray 2, the projection of the drive cam 52A acts on the roller 61 of the guide plate 59,
The posture is suddenly changed from a downward posture to a substantially horizontal posture, whereby the leaf of the seedling 5 is advanced to the plunge start position so as to be picked up or to be scooped under the leaf, and on the projecting track of the seedling ejection claw 4. Make sure there are no leaves.

It should be noted that, in FIGS. 1 to 4, the seedling take-out nail 4 is attached to the seedling soil 5.
From the time of piercing the seedling to the time of dropping the seedling soil 5 above the planting cylinder 37, the locus X of the tip of the seedling take-out nail 4 in the seedling take-out process (forward stroke) is indicated by a one-dot chain line, and the seedling is taken out during the backward stroke. The locus Y of the tip of the claw 4 is shown by a two-dot chain line. Transport device 34
As shown in FIGS. 5 and 12 to 14, the movable frame 92 is arranged rearward of the driver's seat 27 and is supported by the support frame 91 fixed to the main frame 33 in the left-right direction via guide rails or the like. Is equipped with.

The movable frame 92 is arranged forwardly, and the seedling tray 2 is loaded from the upper side of the movable frame 92 along the rear surface of the movable frame so that the opening of the pot portion 3 faces rearward and upward.
The lateral movement of the movable frame 92 laterally feeds it,
It is configured to be vertically fed in the movable frame 92. It should be noted that the movable frame 92 has two seedling trays 2 arranged vertically.
Can be loaded.

The movable frame 92 is provided with a support plate 93 for supporting and guiding the bottom portion of the seedling tray 2 (that is, the bottom portion of the pot portion 3) across the pot portions 3 arranged in a row. The support plate 93 is extended to the pot portion 3 at a position where the seedling soil 5 is taken out by the seedling take-out nail 4.
The tip portion of 3 serves as a backing member 89 for preventing the seedling tray 2 from bending when the seedling take-out nail 4 is pierced into the seedling soil 5 and for stably taking out the seedling soil 5 by the seedling take-out nail 4. ing.

A lateral feed shaft 102 having an endless spiral groove is rotatably supported on the support frame 91,
Power from the seedling take-out device 1 side can be transmitted to the lateral feed shaft 102, and a lateral feed mechanism 103 for laterally feeding the movable frame 92 is provided between the lateral feed shaft 102 and the movable frame 92. The horizontal feed mechanism 103 enables the movable frame 92 to reciprocate horizontally in the left-right direction over substantially the entire width of the seedling tray 2.

A horizontal shaft 94 is rotatably attached to the lower part of the movable frame 92, and a pair of left and right vertical feed wheels 95 are provided on the horizontal shaft 94 via a one-way clutch. A chain 97 is hooked over the driven wheel 96 provided on the upper portion of the movable frame 92, and a transport pin 98 that engages with the gap between the pot portions 3 in the vertical direction is attached to the chain 97. ing.

A space between the horizontal feed shaft 102 and the horizontal shaft 94 corresponds to one pitch between pot portions of the seedling tray 2 when the laterally fed movable frame 92 reaches the end of its horizontal movement. Intermittent feed means 99 for intermittently moving the chain 97 through the vertical feed wheel 95 by a distance is provided, and the vertical feed wheel 95, the chain 97, the transport pin 98, the intermittent feed means 99 and the like feed the seedling tray 2 laterally. An intermittent vertical feed mechanism 100 that vertically feeds one pitch later is configured.

The present invention is not limited to the above-described embodiment, but various design changes can be made. First, the rod 104 may be a metal rod coated with resin, or may be soiled from the pot with only one claw, and may also be used for walking.

[0064]

As described above in detail, according to the present invention, when the seedling soil extracted from the pot section of the seedling tray is dispensed, the seedling soil can be reliably dispensed without falling off.

[Brief description of drawings]

FIG. 1A is a sectional side view of a transplanter equipped with a seedling take-out nail according to the present invention immediately before taking out seedlings, and FIG. 1B is a perspective view of a toe.

FIG. 2 is a sectional side view immediately after taking out the seedlings.

FIG. 3 is a sectional side view immediately before leaving the seedling.

FIG. 4 is a cross-sectional side view immediately after the seedling is detached.

FIG. 5 is a side view showing a relationship between a seedling take-out device and a carrying device.

FIG. 6 is a cross-sectional side view of the main part of the seedling take-out device when the seedling is pierced.

FIG. 7 is a cross-sectional side view of the main part of the seedling take-out device when the seedling is removed.

FIG. 8 is a sectional side view of a main part of the seedling take-out device before the seedling is pierced.

FIG. 9A is a sectional plan view of a main part of the seedling take-out device when a seedling is pierced, and FIGS. 9B and 9C are ZZ arrows of FIG. 9A.

FIG. 10 is a rear view of the main part of the seedling take-out device.

FIG. 11 is a perspective view of a separation guide body.

FIG. 12 is an overall side view of the transplanter.

FIG. 13 is an overall plan view of the transplanter.

FIG. 14 is an overall side view of the implanting device.

[Explanation of Codes] 1 seedling take-out device 2 seedling tray 3 pot part 4 seedling take-out claw 5 seedling soil 6 claw guide 8 claw support 9 retainer 10 claw operating mechanism 11 guide part 11b scrape part 35 planting device 43 planting cylinder 104 bar material 204 flat surface 304 upward taper surface 404 taper taper surface 504 taper taper surface

Claims (5)

[Claims] 1. A pot section (3) in a seedling tray (2).
The seedlings (5) from the pot part (3) by rushing in and out of the pot section (3), and at the same time, the seedlings are taken out from the transplanting machine that is delivered to and delivered to the planting cylinder (43) of the planting device (35). In the claw (4), the seedling take-out claw (4) is made of a rod (104), and a flat surface (204) is formed along the rod longitudinal direction on the support side of the seedling soil (5) that is being fed. The nail for picking up seedlings of the transplanting machine, which is characterized in that 2. The seedling taking-out nail for a transplanter according to claim 1, wherein the flat surface (204) is formed from the tip of the nail to substantially the entire length of the bar (104). 3. The tip of the seedling take-out claw (4), which projects into the pot portion (3) in a substantially horizontal posture, has an upwardly tapered surface (304) in side view and a tapered tapered surface (404) (in plan view). 504), and the seedling extraction nail of the transplanter according to claim 1 or 2. 4. The seedling taking-out nail for a transplanter according to claim 1, wherein the flat surface (204) is provided with a slit (604) along the longitudinal direction of the rod. 5. A nail guide tool (6) for guiding the seedling picking nail (4) in the longitudinal direction of the rod, the insertion hole (11a) of the nail.
And the flat surface (20) is formed in the insertion hole (11a).
4) or a slit (604) with a soil scraping part (116) attached to the slit (604).
A nail guide tool for the seedling extraction nail (4) according to 4.