JPH09271222A - Device and method for ejecting seedling for transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To insert a seedling eject pawl at an optimum position regardless of size of a pot part concerning a transplanter with which a soil block seedling in the pot part of a seedling tray is ejected by inserting the seedling eject pawl to block soil in the pot part and moving it backward later. SOLUTION: The set position of a seedling tray 37 can be changed by moving the position of a conveyer pin 73, which pushes a pot part 37a in longitudinal feeding direction H by being inserted between the pot parts 37a of the seedling tray 37 in the longitudinal feeding direction H, in the longitudinal feeding direction H corresponding to the size of the pot part 37a.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a transplanter for transplanting seedlings such as vegetables into ridges.

[0002]

2. Description of the Related Art Conventionally, as a transplanter, a seedling tray feeder for intermittently transferring seedling trays for growing soil block seedlings vertically and horizontally in pots formed in many rows and columns, and a planting device for planting soil block seedlings in ridges. And a seedling feeder that picks up the soil block seedlings one by one from the seedling tray and conveys them to the planting device, so that the soil block seedlings are automatically planted in the ridges while running. There is something.

In this transplanter, the seedling tray is intermittently laterally fed, and while the seedling tray is laterally fed, the seedling take-out claws are inserted into the block soil in the pot portion, and then the pots are moved backward. When the seedlings are taken out of the pot and the seedlings are taken out of the pots in a row horizontally, the seedling tray is fed vertically by one pitch, and again the seedling tray is intermittently fed laterally to the opposite side. I am trying to do it.

As a mechanism for vertically feeding the seedling tray, a vertical feed cam is provided on the horizontal feed shaft for horizontally feeding the seedling tray, and the vertical feed cam is provided on the vertical feed actuating shaft when the seedling tray reaches the end. Provided with a follower for reciprocally rotating the vertical feed operating shaft when pushed by the vertical feed operating shaft so that the vertical feed drive shaft is rotated in the vertical feed direction when the follower is pushed by the vertical feed cam. By interlockingly connecting with the vertical feed drive shaft and rotating the vertical feed drive shaft, the transport pin inserted between the vertical pot parts is moved to move the pot part 1 vertically.
There is one that is moved only by the pitch.

[0005]

In the above transplanter, a plurality of pots of the seedling tray on which seedlings are raised have different sizes of openings, that is, a plurality of pots having different vertical and horizontal pitches between centers. The seedling tray may be used selectively. In this case, in the conventional case, as shown in FIG.
The seedling tray of the pot section 120 with a small opening and the seedling tray of the pot section 121 with a large opening are set so that the positions to be set first coincide with each other in the feeding direction G front end portion of the seedling tray, and therefore the pot section opening Since the insertion position of the seedling extraction claw 122 from the front end edge of the feeding direction G is the same position regardless of the size of the opening of the pot part, when the claw insertion position is set with reference to the seedling of the pot part 120 with a small opening. Since the volume of the block soil is large for the seedlings in the large opening pot 121, the support balance of the block soil by the seedling extraction claws 122 is poor, which may result in poor removal of the seedlings (for example, from the nail insertion position). Part of the distant block soil remains on the inner surface of the pot).

Further, even when one kind of seedling tray is used, there are cases where it is desired to change the inserting position of the seedling take-out claw (for example, due to improper setting, the inserting position of the seedling take-out claw is the opening of the pot portion. If you get too close to the edge). Therefore, in view of the above problems, it is an object of the present invention to consider inserting a seedling take-out nail into an optimum position for taking out a seedling.

[0007]

The technical means taken by the present invention to achieve the above object is, in claim 1, a block soil in a pot section of a seedling tray having a large number of pot sections in the vertical and horizontal directions. In the seedling taking-out device of the transplanter equipped with the seedling taking-out nails for taking out the soil block seedlings one by one from the pot portion after the insertion, it is possible to change the inserting position of the seedling taking-out nails into the block soil. The feature is that the setting position of the seedling tray can be changed.

According to a second aspect of the present invention, a plurality of seedling trays having different opening sizes of the pot portion are selectively used, and the seedling block soil of the seedling tray having the larger opening portion of the pot portion is used. Make sure that the insertion position of the seedling take-out claws into the seedling is closer to the center from the opening edge of the pot part than the position of the seedling take-out claws into the block soil of the seedlings in the seedling tray with the smaller opening in the pot part. It is characterized by changing the set position of the tray.

According to a third aspect of the present invention, a seedling take-out claw for taking soil block seedlings one by one from the pot portion by inserting the seed block into a block soil in the pot portion of a seedling tray having a large number of vertical and horizontal pot portions and then retreating the pot soil. And a seedling take-out device of a transplanter having a vertical feed mechanism that vertically feeds the seedling tray one pitch at a time in a pot portion, wherein the vertical feed mechanism has a plurality of seedlings having mutually different pot size openings. When the trays are selectively used, a vertical feed amount switching means for switching the vertical feed amount according to the seedling tray to be used is provided, and when the vertical feed amount is switched by this vertical feed amount switching means, the pot The insertion position of the seedling take-out nails into the block soil of the seedlings of the seedling tray with the larger opening is larger than the insertion position of the seedling take-out nails into the block soil of the seedlings of the seedling tray with the smaller opening of the pot part. The set position of the seedling tray is changed so as to be closer to the center from the opening edge portion of the pot portion. In claim 4, a vertical feed drive shaft for vertically feeding the seedling tray is provided in the vertical feed mechanism. This vertical feed drive shaft is provided with a plurality of vertical feed gears that rotate together in the feed direction and that have engaging teeth of different pitches. A plurality of ratchet arms for restricting the rotation of the feed gear are provided corresponding to each vertical feed gear, and among the plurality of ratchet arms, one of the ratchet arms is engaged with the corresponding vertical feed gear. Can be selectively engaged with the corresponding vertical feed gear, and the engagement of the ratchet arm with the engaging teeth of the vertical feed gear is released, and the vertical feed gear is set to feed the seedling tray vertically one pitch in the pot section. A vertical feed actuating means for engaging the ratchet arm with the engaging tooth again after rotating the compound tooth by one pitch is provided, and when the seedling tray is set, the position of the engaging tooth with which the ratchet arm engages is set to the longitudinal feed gear mutual. The set position of the seedling tray is changed by shifting the position in the circumferential direction.

According to a fifth aspect of the present invention, the vertical feed mechanism is provided with a vertical feed drive shaft for vertically feeding the seedling tray.
A ratchet arm that rotates in the same direction as the feed direction and that has a plurality of vertical feed gears with engaging teeth of different pitches and that engages with the engaging teeth of the vertical feed gears to regulate the rotation of the vertical feed gears. A plurality of ratchet arms are provided corresponding to each vertical feed gear, and among the plurality of ratchet arms, one of the ratchet arms is selectively used as a corresponding vertical feed gear so that the ratchet arm engages with the corresponding vertical feed gear. The vertical feed gear of the ratchet arm is disengaged from the engaging teeth, and the vertical feed gear rotates 1 pitch of the engaging teeth again to vertically feed the seedling tray 1 pitch of the pot portion. A longitudinal feed actuating means for engaging the ratchet arm with the engaging tooth is provided, and the engaging portions of the ratchet arms engaging with the engaging tooth when setting the seedling tray are displaced from each other. Te, characterized in that so as to change the set position of the seedling tray.

According to a sixth aspect of the present invention, when the soil block seedlings are taken out from the pot section of the seedling tray, the seedling taking-out nails are inserted into the seedling block soil and then retracted to take out the seedlings. When a plurality of seedling trays with different opening sizes of pots are used selectively, when inserting the seedling extraction claws into the seedling block soil of the seedling tray with the larger opening of the pot, , Characterized in that the seedling take-out claw is inserted so as to be closer to the center from the opening edge of the pot part than the insertion position of the seedling take-out claw into the block soil of the seedling of the seedling tray with the smaller opening of the pot part. To do.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 16 show a first embodiment, and in FIG. 2, the vegetable transplanter 1 is a traveling machine body 2
Is a walking type having a transplanting device 3 and a steering handle 4 on the rear side of the plant, and while planting soil block seedlings in the ridges 5 at a predetermined interval while traveling in the longitudinal direction across the ridges 5.

The advancing direction of the transplanter 1 is called the front-back direction, and the lateral direction orthogonal to the advancing direction is called the left-right direction. The traveling machine body 2 has a pedestal 7 mounted to the front of the transmission case 6 so as to project forward, an engine 8 and the like mounted on the pedestal 7, and front and rear wheels 9 and 10 on both left and right sides. Has been done.

The power of the engine 8 is input to a power transmission mechanism in the mission case 6, and the power input to the mission case 6 is projected to both left and right sides via a transmission mechanism as shown in FIG. The first PTO that is transmitted to the wheel transmission shaft 11 and that is provided behind the wheel transmission shaft 11 and projects laterally from the mission case 6 to the left and right.
It can be taken out from the shaft 12 and the second PTO shaft 13 protruding upward and rearward.

Further, a transmission case 14 is provided on the outer ends of the left and right wheel transmission shafts 11 so as to be vertically swingable about its axis, and the rear wheel 10 is supported below the transmission case 14.
Power is transmitted from the wheel transmission shaft 11 to the rear wheels 10 via the chain transmission mechanism in the transmission case 14, and the rear wheels 10 are rotationally driven. As shown in FIGS. 2 and 3, the transplantation device 3 includes a transplantation frame 1 attached to the rear of the traveling machine body 2.
5, which is a planting device 16 for planting seedlings in the ridge 5.
, A seedling supply device 17 for supplying seedlings to the planting device 16, a soil covering / squeezing roller 18, and a multi-cutting device 19 for making a cut in the multi-film M covering the ridges 5.

The transplantation frame 15 has a front portion pivotally supported by a main frame 20 fixed to the mission case 6 and a front portion rotatably around the left and right first PTO shafts 12 about the left and right axes.
It is mainly composed of a movable frame 21 to which a soil covering / squeezing roller 18 is attached at a rear portion thereof, and a steering handle 4 is attached and fixed to a rear end side of the main frame 20, and a rear portion of the movable frame 21 is covered with a soil covering / squeezing roller 18. 5 It is supported so as to follow the irregularities on the upper surface,
The vertical distance between the movable frame 21 and the movable frame 21 is adjustable.

The planting device 16 includes a planting cup 22 which is pierced and moved to ridge the ridge 5 in order to plant the seedlings supplied from the seedling feeding device 17, and the planting cup 22 is vertically swingable. It is mainly composed of a swinging link mechanism 23 supported by. The swing link mechanism 23 includes a first parallel link 25 whose upper end is pivotally supported by a bracket 24 fixed to the movable frame 21 so that the lower side can swing back and forth, and the lower end of the first parallel link 25. The rocking plate 26 is pivotally connected to the rocking plate 26, the front end of the second parallel link 27 is pivotally connected to the rocking plate 26, and the planting cup 22 is pivotally connected to the rear end of the second parallel link 27. .

The upper link 2 of the second parallel link 27
A bearing 28 is fixed to 7a, and a crank pin 29a of a crank shaft 29 rotatably supported on the movable frame 21 about the left and right axes is inserted into the bearing 28. The first PT is mounted on the crankshaft 29 via a winding transmission mechanism 30.
The power from the O-axis 12 is transmitted, and the power from the first PTO shaft 12 causes the crankshaft 29 to rotate counterclockwise in FIG. 3, thereby causing the first and second parallel links 25, 26 to rotate.
Thus, the planting cup 22 swings up and down and also swings back and forth, and the planting cup 22 projects into the ridge 5 at the lower end side of the locus.

Further, the planting cup 22 is provided with an opener 22a which can be opened and closed in the front and rear directions at the lower part thereof.
Is opened back and forth by the interlocking tool 31 when it enters the ridge 5 on the lower end side of the locus of the planting cup 22, forms a transplant hole in the ridge 5, drops seedlings into the transplant hole, and then covers the soil.
The crushing roller 18 allows soil to be planted from the left and right of the transplant hole.

A multi-cut device 19 is provided in front of the planting cup 22, and the multi-cut device 19 includes:
A cutting tool 32 for making a cut in the multi-film M is provided, and the cutting tool 32 is connected to the movable frame 21 via a parallel link 33 so as to be vertically movable. As shown in FIG. 14, a cam roller 34 is pivotally attached to the upper link 33a of the parallel link 33, and the cam roller 34 rolls on the outer circumference of a disc-shaped cam 35 provided on the crankshaft 29. It has become. The cutting tool 32 is urged by its own weight in a direction in which the cam roller 34 is pressed against the outer circumference of the cam 35.

A concave portion 36 is formed in a part of the circumferential direction of the cam 35. When the cam roller 34 falls into the concave portion 36, the cutting tool 32 is moved downward by its own weight, and the lower part of the cutting tool 32 is lowered. The multi-film M is projected to form a cut K in the multi-film M, and the opener 22a of the planting cup 22 is projected into the cut K.

The cam 35 is provided on the multi-film M as a K
It is formed so as to raise the cutting tool 32 immediately after making a cut, and other parts except the recessed part 36 are
In order to hold the cutting tool 32 in the standby position at the upper limit, the outer peripheral shape is formed so that the distance from the axis of the crankshaft 29 is substantially constant. The shape of the cut K can be changed depending on the shape of the lower part of the cutting tool 32. For example, as shown in FIG.
The shapes shown in (b), (c), and (d) are conceivable.

The seedling feeding device 17 is arranged on the upper rear side of the main frame 20 and supports a seedling tray 37, which accommodates a large number of soil block seedlings S vertically and horizontally, in a backward inclined manner and intermittently feeds the seedling tray horizontally and vertically. It is composed of a feeding device 38 and a seedling feeding device 39 which is arranged on the front side of the seedling tray feeding device 38 and takes out the seedlings one by one from the seedling tray 37 and conveys them to the planting cup 22. .

As shown in FIG. 5, the seedling tray 37 is made of plastic, is thin and has flexibility, and has a large number of pots arranged in a grid pattern at a predetermined pitch in the vertical and horizontal directions. 37a, and the opening edge portions of the pot portion 37a are connected to each other in a planar shape. The soil block seedling S is grown by filling the pot portion 37a with the bed soil, and sowing and raising the seedling there.

The seedling feeding device 39 has a seedling take-out claw 43 for taking out the seedling S from the pot portion 37a of the seedling tray 37, and this seedling take-out claw 43 is, as shown in FIGS. 2 and 4, a second PTO.
The shaft 13 is supported via a claw movement mechanism 42 that is driven by transmitting power via a universal joint 40, a power transmission mechanism in the relay box 41, etc., and is indicated by a forward trajectory X and a backward trajectory Y. It is moved to draw a reciprocating motion trajectory.

The seedling feeder 39 will be described together with its operation. FIG. 4 shows a standby state before taking out the seedlings S from the seedling tray 37. From this state, the crank body 60 is rotated around the drive shaft J by the drive shaft J. When rotated, the crank body 60
When the roller 44 externally fitted to the crank pin 60a on the tip end side rotates around the drive shaft J within the central arc portion of the elongated hole 46 of the swing arm 45, it is pushed by the roller 44 and the push link 4 is pushed.
7 swings around the pin 48, the nail support 50 and the seedling picking nail 43 progress toward the block soil in the pot part 37a through the nail fitting 49, and the seedling picking nail 43 pierces the block soil. To be done.

At this time, the claw guide 51 is immovable because the operating member 52 is in contact with the operating piece 53, and the base 54
Of the holding arm 5 by moving the lock arm 57
9, the claw support 50 and the seedling take-out claw 43 are prevented from returning. Then, when the crank body 60 further rotates, the swing arm 45 swings forward through the crank pin 60a and the roller 44, the seedling take-out claw 43 and the claw guide 51 move forward, and the seedling S is removed from the pot portion 37a. It is taken out. Then, the roller 61 of the holding body 59 makes the guide plate 6
By sliding in the cam groove 63 of No. 2, the seedling take-out claw 43 is moved to the lower end of the forward trajectory X and is in the downward posture, and then,
The spring (not shown) is released, and the elastic force of the spring causes the nail guide 51 to move forward to push the seedling S away from the seedling take-out nail 43, and put the seedling S into the planting cup 22 from above.

After that, the seedling take-out claw 43 moves on the backward movement locus Y and returns to the position and state before taking out the seedlings shown in FIG. As shown in FIGS. 2 and 5 to 7, the seedling tray feeding device 38 includes a movable frame 65 supported by a guide rail 64 fixed to the main frame 20 and the handle 4 so as to be movable in the left and right directions. The frame 65 has a support plate 66 that supports the bottom portion of the seedling tray 37 across the horizontal row of pot portions 37 a, and the support plate 66 is attached and fixed between the left and right side plates 67.

A vertical feed drive shaft 6 is provided below the left and right side plates 67.
8 are arranged in the left-right direction, and the left-right side plate 6 is provided.
A vertical feed driven shaft 69 is disposed in the left-right direction in the upper part between the seven, a pair of left and right drive sprockets 70 is fixed to the drive shaft 68, and a pair of left and right driven sprockets 71 is attached to the driven shaft 69. It is fixed. An endless chain 72 is hung between the drive sprocket 70 and the driven sprocket 71, and a transport pin 73 that engages with a gap between the pot portions 37a in the vertical direction is mounted on the chain 72. Installed. Therefore,
By rotating the drive shaft 68 in the direction indicated by the arrow A in FIGS. 2 and 7, the seedling tray 37 is pushed by the transport pin 73 and can be vertically fed.

In this seedling tray feeding device 38, the size of the opening of the pot portion 37a is different, but the interval between the openings of the pot portion 37a is substantially the same (thus, the pitch between the centers of the pot portions 37a is different). A kind of seedling tray 37 is attached, and therefore, the transport pin 73
Is not provided so as to engage with each other between the pot portions 37a, but the gap between the pot portions 37a in the vertical direction (indicated by the symbol F in FIG. 5) of the two kinds of seedling trays 37 is related to the vertical direction F. It is provided at the matching position.

The lateral feeding mechanism of the seedling tray 37 will now be described. As shown in FIG. 6, the left and right side plates are arranged between the left and right support members 74 fixed to the handle 4 on both the left and right sides of the movable frame 65. A lateral feed shaft 75 that penetrates 67 and has an endless spiral groove is attached rotatably around the left and right axes, and a slider 76 having an engaging member that engages with the spiral groove is externally fitted to the lateral feed shaft 75. And
The slider 76 is connected to the movable frame 65.

The lateral feed shaft 75 has a relay box 41.
Power is transmitted through a power transmission mechanism in the right side support member 74 configured by a winding transmission mechanism and a transmission case, the lateral feed shaft 75 is intermittently driven to rotate, and the lateral feed shaft 75 is intermittently driven. When it is driven to rotate, the slider 76 moves left and right, and the movable frame 65 is intermittently reciprocated in the left and right direction.

Next, the vertical feed mechanism of the seedling tray 37 will be described. As shown in FIGS. 6, 8 and 9, the vertical feed cams 77 are fixed to the left and right sides of the horizontal feed shaft 75, and the movable frame 65 is provided. A vertical feed operating shaft 78 is rotatably supported between the left and right side plates 67, and the vertical feed operating shaft 78 has a movable frame 65.
Vertical feed cam 7 when is moved to the leftmost end or the rightmost end
A pair of left and right followers 79 that engage with 7 are provided.

The left end of the vertical feed operating shaft 78 projects from the left side plate 67, and the first link 80 is fixed to this projecting portion. The first link 80 has a second link 81.
A lock release lever 82 having an engagement pin 82a is pivotally attached to the second link 81. The lock release lever 82 is provided on the left end side of the vertical feed drive shaft 68 projecting from the side plate 67 on the left side of the movable frame 65.
It is fixed to a one-way clutch 83 rotatably supported by a. The arm portion 8 of the lock release lever 82
A tension coil spring 84 is engaged with 2b, and the lock release lever 82 is urged to rotate in the direction A shown in FIG.

Further, on the left end side of the vertical feed drive shaft 68, engaging teeth 86a having different pitches around the shaft center of the drive shaft 68,
The first and second vertical feed gears 86, 87 each having 87a are arranged side by side in the left-right direction.
6 and 87 are fixed to a boss 88 which is supported on the vertical feed drive shaft 68 so as to be rotatable relative to the left and right axes. The first vertical feed gear 86 is directly fixed to the boss 88 by welding, and the second vertical feed gear 87 is fixed to the mounting disc 89 fixed to the boss 88.
It is attached and fixed by a bolt 90 penetrating the first vertical feed gear 86 and screwed into a screw hole formed in the attachment disc 89.

The insertion hole 91 of the bolt 90 formed in the second vertical feed gear 87 is formed in an arc shape with the axial center of the vertical feed drive shaft 68 as the center, and the first through hole of the second vertical feed gear 87 is formed. The relative position around the vertical feed drive shaft 68 with respect to the vertical feed gear 86 can be adjusted. In the above structure, the second vertical feed gear 87 is directly fixed to the boss 88, and the first vertical feed gear 86 is attached to the mounting disc fixed to the boss 88 so that the rotation around the vertical feed drive shaft 68 can be adjusted. It may be attached and fixed. In addition, the first vertical feed gear 86 and the second vertical feed gear 8
7 and 7 are fixed by bolts and nuts, and one of the first and second vertical feed gears 86 and 87 is fixed to the boss 88,
The bolt insertion hole formed on the other side may be formed in an arc shape centering on the axis of the vertical feed drive shaft 68. In short, the first and second vertical feed gears 86, 87 are formed by the vertical feed drive shaft 68. It suffices that the relative position can be adjusted around the axis of.

The boss 88 is interlocked with the one-way clutch 83 so that the first and second vertical feed gears 86 and 87 rotate together only in the vertical feed direction (shown by arrow A in FIG. 8). (Therefore, it spins in the opposite direction). In addition, the first vertical feed gear 86 is formed with a hole 94 into which a coupling pin 93 fixed to a clutch shifter 92 axially movably spline-fitted to the left end of the vertical feed drive shaft 68 is engaged. ing.

As shown in FIGS. 9 and 13, the clutch shifter 92 is formed with an engagement groove 96 with which the shift fork 95 is engaged, and the shift fork 95 has a lever shaft 97.
The lever shaft 97 is rotatably supported around a shaft center in a direction orthogonal to the shaft center of the vertical feed drive shaft 68 by a support plate 98 mounted and fixed to the outer surface of the left side plate 67. An operation lever 99 is fixed to the lever shaft 97 so as to project to the left. By vertically swinging the operation lever 99, the shift fork 95 is swung around the shaft center of the lever shaft 97, whereby the shift fork 95 is swung. The clutch shifter 92 moves in the axial direction on the vertical feed drive shaft 68, and the connecting pin 93 opens the hole 94.
It is designed to be inserted and removed with respect to.

In the illustrated example, when the operating lever 99 is swung upward, the connecting pin 93 is inserted into the hole 94 and the clutch is engaged, and when the operating lever 99 is swung downward, the connecting pin 93 is moved. Is pulled out from the hole 94 to disengage the clutch, and the operating lever 99 is urged upward by a tension coil spring 100. Operating lever 99
Is inserted into the side wall of the cover 101 that covers the first and second links 80 and 81, the first and second vertical feed gears 86 and 87, and protrudes from the cover 101 to the outside.
Insertion hole 102 of the operation lever 99 formed in the side wall of 01
A stepped portion is formed on the side of the operation lever 99 for catching the operation lever 99 in order to hold the operation lever 99 in the clutch disengaged position.

On the front upper side of the first and second vertical feed gears 86, 87, first and second ratchet arms 103, 104 for restricting the rotation of these vertical feed gears 86, 87 are arranged. . These first and second ratchet arms 10
As shown in FIGS. 10 and 11, the reference numerals 3 and 104 have engaging portions 103a and 104a that engage with the engaging teeth 86a and 87a of the corresponding vertical feed gears 86 and 87, respectively, and the rear upper side thereof is the above-mentioned. It is pivotally supported by a support shaft 105 in the left-right direction provided on the support plate 98 so as to be vertically swingable, and is biased by swinging tension coil springs 106 and 107 so as to swing downward. , 104
engaging teeth 8 of the first and second vertical feed gears 86, 87 corresponding to a
6a and 87a are engaged.

Further, each ratchet arm 103, 104
The engaging surfaces 103b and 104b that engage with the engaging pin 82a of the lock release lever 82 are formed on the. First
A selection member 108 is provided near the lower portions of the second ratchet arms 103 and 104. This selection member 1
08 is the support plate 98 as shown in FIGS.
A pair of left and right support walls 110L and 110R that are rotatably supported by a left and right pivot 109 fixed to
Between the support walls 110L and 110R,
The first and second engaging pieces 111 and 112 located below the second ratchet arms 103 and 104 are integrally formed by a plate material.

The first engaging piece 111 is located below the lower portion 103c of the first ratchet arm 103 and, as shown in FIG. 11, the lower portion 103c of the first ratchet arm 103.
The first ratchet arm 103 is pushed up so that the engaging portion 103a comes into contact with and is separated from the engaging tooth 86a of the first vertical feed gear 86. The second engagement piece 112 is located below the lower portion 104c of the second ratchet arm 104, and
As shown in FIG. 0, the second ratchet arm 104 lower part 1
04c so that the engaging portion 104a contacts the second longitudinal feed gear 8
The second ratchet arm 104 is pushed up so as to be separated from the engaging tooth 87a of No. 7.

The first engaging piece 111 and the second engaging piece 1
12 is arranged at an angle of about 90 °, and when the selection member 108 is rotated to bring the first engagement piece 111 into contact with the lower portion 63c of the first ratchet arm 103, The engagement piece 112 is attached to the second ratchet arm 1
04 When separated from the lower portion 104a and the second engagement piece 112 is brought into contact with the second ratchet arm 104 lower portion 104c, the first engagement piece 111 is separated from the first ratchet arm 103 lower portion 103a. Is configured to.

The support wall 110R on the right side has a pivot 1
A pair of insertion holes 113 are formed on the circumference centered on the axis of the shaft 09, and the insertion holes 113 are selectively inserted and screwed into a nut 114 fixed to the back surface of the support plate 98. By the fixing bolt 115, the first engaging piece 11
1 is in contact with the lower portion 103c of the first ratchet arm 103, and in a position with which the second engaging piece 112 is in contact with the lower portion 104c of the second ratchet arm 104.
08 can be fixed.

The fixing place by the fixing bolt 115 is outside the cover 101, and the rotating operation and fixing operation of the selection member 108 can be performed without removing the cover 101. Seedling tray 13 in the above configuration
The operation of the intermittent vertical feed mechanism will be described. First, the selection member 1
08, the first and second ratchet arms 103, 1
One of the engaging portions 103a and 104a of 04 is engaging teeth 86a and 87a of the first and second vertical feed gears 86 and 87.
To engage the first and second ratchet arms 10
It is selected so that the other one of 3, 104 is pushed up.

In FIGS. 8 and 10, the second ratchet arm 104 is pushed up and the engaging portion 103a of the first ratchet arm 103 engages with the engaging tooth 86a of the first vertical feed gear 86. ing. Further, the vertical feed cam 77 is intermittently rotated in the arrow B direction together with the horizontal feed shaft 75. Then, when the movable frame 65 moves to the left and right ends, the vertical feed cam 77 pushes the follower 79 in the arrow C direction in FIG. 8, and the movement of the follower 79 in the arrow C direction causes the vertical feed operation shaft to move. 78 rotates and pulls the second link 81 rearward and upward via the first link 80, whereby the lock release lever 82 together with the one-way clutch 83 is indicated by the arrow A around the axial center of the vertical feed drive shaft 68. The engaging pin 82a moves rearward by rotating in the opposite direction to the engaging pin 82a.
Pushes the engaging surface 103b of the first ratchet arm 103 to push up the first ratchet arm 103, and the engaging portion 103a disengages from the engaging tooth 86a of the first vertical feed gear 86. At this time, the one-way clutch 83 idles and the first and second vertical feed gears 86 and 87 do not rotate.

Next, the follower 79 and the first link 8 are urged by the urging forces of the tension coil spring 84 and other return springs.
The 0, the second link 81, and the lock release lever 82 return to their original positions. At this time, the first and second vertical feed gears 86, 87 are rotated in the arrow A direction via the one-way clutch 83, The vertical feed drive shaft 68 rotates in the direction of arrow A via the clutch shifter 92, while the engaging portion 103a of the first ratchet arm 103 engages with the engaging teeth 86a of the first vertical feed gear 86. Then, the rotation of the vertical feed drive shaft 68 is restricted.

The vertical feed cam 77, follower 79, first and first
By the second links 80, 81, the lock release lever 82, the one-way clutch 83, etc., the ratchet arm 10
3, 104 longitudinal feed gears 86, 87 engaging teeth 86a, 8
7a is disengaged and the vertical feed gears 86, 8
The vertical feed operation means is configured to reengage the gear teeth 7 after the engagement teeth 86a and 87a rotate one pitch.

As a result, when the soil block seedlings S have been taken out of the horizontal row of pots 37a, the seedling trays 37 are vertically fed by a distance corresponding to the vertical spacing of the pots 37a. There is. That is, the interval between the engaging teeth 86a and 87a of the first and second vertical feed gears 86 and 87 is set to the pot portion 37a of the seedling tray 37 to be placed on the movable frame 65.
Are formed so as to correspond to one pitch in the vertical direction.

Thus, the first and second vertical feed gears 8 are
In the present embodiment, by selecting one of 6 and 87, as described above, the pitch of the pot portions 37a differs due to the difference in the size of the openings of the pot portions 37a.
The first vertical feed gear 86 corresponds to the seedling tray 37 having a smaller opening (smaller pitch) of the pot portion 37a and the second vertical feed gear. 87 corresponds to the seedling tray 37 with the larger opening (larger pitch) of the pot portion 37a.

Therefore, the first and second vertical feed gears 86 and 87, the first and second ratchet arms 103 and 1
04 and the selection member 108, the pot 37
When a plurality of seedling trays 37 having different opening sizes of a are selectively used, the vertical feed amount switching means is configured to switch the vertical feed amount corresponding to the seedling trays 37 used.

As shown in FIGS. 10 and 11,
When the seedling tray 37 is first set, the engaging portions 103a, 1 of the first and second ratchet arms 103, 104
The engaging teeth 86a and 87a (indicated by symbols D and E) of the first and second vertical feed gears 86 and 87 with which 04a is engaged are the same as the engaging teeth 86a of the first vertical feed gear 86. Vertical feed gear 87
The engaging tooth 87a is displaced from the engaging tooth 87a in the longitudinal direction A by L.

Therefore, as shown in FIG. 1, the seedling tray 37 having the smaller opening of the pot portion 37a (shown by the solid line).
When the seedling tray 37 having a larger opening of the pot portion 37a (shown by a virtual line) is set, the vertical feed drive shaft 68 is slightly rotated in the vertical feed direction A and the transport pin 73 ( And the chain 72) moves in the vertical feed direction H of the seedling tray 37.

As a result, the insertion position from the lower edge of the opening of the pot portion 37a of the seedling take-out claw 43 (front edge of the seedling tray vertical feed direction H) to the block soil of the seedling S is changed. That is, the seedling S of the pot portion 37a having a small opening
The claw insertion position of the pot portion 37a with a large opening to the seedling S is closer to the center O side of the block soil of the seedling S from the lower edge of the opening of the pot portion 37a, and the claw insertion position corresponding to the volume of the block soil. The seedling take-out nail 43 is inserted into the.

FIG. 17 and FIG. 18 show the second embodiment. In this embodiment, when the seedling tray 37 is first set, the first and second ratchet arms 103, 1 are provided.
First and second engaging parts 103a and 104a of No. 04
Engaging teeth 86a, 87a (indicated by symbols D and E) of the vertical feed gears 86, 87 of the vertical feed gears 86, 87
The same position with respect to A) (in other words, the engaging teeth D and E are on the same radial direction), and the first and second
The ratchet arms 103, 104 of the engaging portion 103a,
104a is displaced by L in the vertical feed direction A.

That is, the second ratchet arm 104
The engaging portion 104a of the first ratchet arm 103 is displaced forward of the engaging portion 103a of the first ratchet arm 103 in the longitudinal feed direction A. As shown in FIG. 17, the engaging portion of the first ratchet arm 103 is As shown in FIG. 18, when the 103a is engaged with the engaging tooth 86a (indicated by reference numeral D) which is engaged when the seedling tray 37 is initially set, as shown in FIG. Engaging teeth 87a that engage the engaging portion 104a when the seedling tray 37 is first set.
When it is engaged with (indicated by reference numeral E), the vertical feed drive shaft 68 slightly rotates in the vertical feed direction A as in the first embodiment, and as shown in FIG. 73 (and the chain 72) moves in the vertical feed direction H of the seedling tray 37.

Therefore, as shown in FIG. 1, the seedling tray 37 having the smaller opening of the pot portion 37a (shown by the solid line).
When the seedling tray 37 (shown by the phantom line) having a larger opening of the pot portion 37a is set, the seedling S of the pot portion 37a having a larger opening is set to the seedling S of the pot portion 37a having a smaller opening. The position of inserting the claws into is closer to the center O side of the block soil of the seedling S from the lower edge of the opening of the pot portion 37a.

In the illustrated example, the pot portion 3 having a small opening
7a and the center O of the pot portion 37a having a large opening
Are set so as to coincide with each other, and the nail inserting position from the center of the seedling S is set to the same position for the large seedling S and the small seedling S, but the present invention is not limited to this, and The claw insertion position is determined to be an arbitrary position according to the volume of the block soil.

If the optimum position of the claw insertion position is unchanged, the relative positions of the first and second vertical feed gears 86 and 87 in the circumferential direction may not be adjustable, and the first and second vertical feed gears 86 and 87 may not be adjustable. Both the vertical feed gears 86 and 87 may be fixed to the boss 88. Further, as a method of changing the claw insertion position from the opening lower edge of the other pot portion 37a depending on the size of the block soil of the seedling S, for example, as shown in FIG. 18, the transport pin 73 is the first pot portion 37a, The contact with the upper side of the seedling tray vertical direction H, the attachment position of the chain 72 of the transport pin 73 can be changed, or the connecting pin 93 of the clutch shifter 92 with respect to the hole 94. This can be done by forming the hole 94 so that the transport pin 73 can be inserted at two positions of the solid line position and the imaginary line position in FIG.

Further, in the above-mentioned embodiment, various kinds can be changed, and further, a third vertical feed gear having a different engaging tooth pitch and a third ratchet arm engaging with the third vertical feed gear are provided, and three kinds of seedling trays 37 are provided. It may be possible to be able to deal with. In this case, the selection member is provided with the third engagement piece, the first engagement piece pushes up the second and third ratchet arms, and the second engagement piece makes the first engagement piece. , The third ratchet arm is pushed up, and the first and second ratchet arms are pushed up by the third engaging piece. Moreover, you may make it possible to respond | correspond to 4 or more types of seedling trays 37 similarly to this.

Further, even when only one vertical feed gear is used among a plurality of vertical feed gears (thus, only one kind of seedling tray is used) or when only one vertical feed gear is provided. , By allowing these longitudinal feed gears to be freely rotatable and fixed, the insertion position of the seedling take-out claws into the block soil of the seedlings can be adjusted to any position, and the seedling take-out claws can be inserted at the optimum position.

[0062]

According to the present invention, the setting position of the seedling tray can be changed so that the insertion position of the seedling take-out nail to the block soil can be changed, so that the seedling take-out nail can be set against the block soil of the seedling. Can be inserted into the optimum position, and seedlings can be taken out satisfactorily without causing poor picking.

When inserting the seedling take-out nails into the block soil of the seedlings of the seedling tray with the larger opening of the pot part, the seedling take-out nails of the seedlings of the seedling tray with the smaller opening of the pot part are put into the block soil. By inserting the seedling extraction claws so that they are closer to the center from the opening edge of the pot section than the insertion position,
It is possible to take out good seedlings that correspond to the volume of seedling block soil.

Furthermore, in the case of selectively using a plurality of seedling trays having mutually different pot opening sizes, the vertical feed amount switching means for switching the vertical feed amount according to the seedling trays used. When changing the vertical feed amount of the seedling tray, the insertion position of the seedling take-out claw into the block soil of the seedling tray of the one with the larger opening of the pot part of the seedling tray of the one with the smaller opening of the pot part By changing the seedling tray setting position so that it is closer to the center from the opening edge of the pot than the insertion position of the seedling extraction claws into the block soil, the vertical feed amount of the seedling tray is changed at the same time. The setting position of the seedling tray has also been changed, which is convenient.

Further, the vertical feed mechanism is further provided with a vertical feed drive shaft for vertically feeding the seedling tray.
A ratchet arm that rotates in the same direction as the feed direction and that has a plurality of vertical feed gears with engaging teeth of different pitches and that engages with the engaging teeth of the vertical feed gears to regulate the rotation of the vertical feed gears. A plurality of ratchet arms are provided corresponding to each vertical feed gear, and among the plurality of ratchet arms, one of the ratchet arms is selectively used as a corresponding vertical feed gear so that the ratchet arm engages with the corresponding vertical feed gear. The vertical feed gear of the ratchet arm is disengaged from the engaging teeth, and the vertical feed gear rotates 1 pitch of the engaging teeth again to vertically feed the seedling tray 1 pitch of the pot portion. Equipped with vertical feed actuating means for engaging the ratchet arm with the engaging tooth, the position of the engaging tooth with which the ratchet arm engages when setting the seedling tray is displaced in the circumferential direction from each other with respect to the vertical feed gears. Or by setting the engaging portions of the ratchet arms that engage the engaging teeth when setting the seedling tray with respect to each other, thereby changing the setting position of the seedling tray. By switching the ratchet arm, the vertical feed amount of the seedling tray and the setting position of the seedling tray can be easily changed at the same time.

[Brief description of drawings]

FIG. 1 is a side view of essential parts showing a relationship between a seedling tray and a seedling take-out nail.

FIG. 2 is an overall side view of the transplanter.

FIG. 3 is a side view showing an implanting device and a multi-cut device.

FIG. 4 is a side view showing a seedling take-out structure.

FIG. 5 is a perspective view of a seedling tray feeder.

FIG. 6 is a cross-sectional view of the seedling tray feeder as seen from the front upper side.

FIG. 7 is a schematic side view of a seedling tray feeder.

FIG. 8 is a side view of a vertical feeding mechanism of the seedling tray.

FIG. 9 is a sectional view of a vertical feeding mechanism of the seedling tray.

FIG. 10 is a side view of the vertical feed amount switching mechanism of the seedling tray according to the first embodiment.

FIG. 11 is a side view of the vertical feed amount switching mechanism of the seedling tray showing an aspect different from FIG. 10 according to the first embodiment.

FIG. 12 is a cross-sectional view of the ratchet arm selection mechanism as viewed from above and above.

FIG. 13 is a side sectional view showing a clutch mechanism of a vertical feeding mechanism of a seedling tray.

FIG. 14 is a side view of the multi-cut device.

FIG. 15 is a plan view showing an aspect of a cut to be inserted in a mulch film.

FIG. 16 is a side view of a vertical feed amount switching mechanism of the seedling tray according to the second embodiment.

FIG. 17 is a side view of a vertical feed amount switching mechanism of a seedling tray showing an aspect different from FIG. 16 according to the second embodiment.

FIG. 18 is a side view showing another example of the relationship between the seedling tray and the seedling take-out nails.

FIG. 19 is a side view showing a relationship between a seedling tray and a seedling take-out nail according to a conventional example.

[Explanation of symbols]

 37 Seedling tray 37a Pot part 43 Seedling extraction nail S Seedling

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kenji Kita, 64 Ishizukitamachi, Sakai City, Osaka Prefecture Kubota Sakai Factory Co., Ltd. (72) Kenkichi Nosaka, 64, Ishizukitamachi, Sakai City, Osaka Kubota Sakai Manufacturing Co., Ltd. (72) Inventor Masaji Izuhara 64 Ishizukita-machi, Sakai City, Osaka Prefecture Kubota Sakai Factory Co., Ltd. (72) In Hitoshi Fukumoto 64, Ishizukita-machi, Sakai City, Osaka Prefecture Kubota Sakai Factory Co., Ltd.

Claims (6)

[Claims] 1. A seedling take-out claw for taking soil block seedlings one by one from the pot section by inserting the seed block into a block soil in the pot section of a seedling tray having a large number of vertical and horizontal pot sections and then retracting the seed blocks one by one. In the seedling taking-out device of the transplanting machine, the setting position of the seedling tray can be changed so that the inserting position of the seedling taking-out nail into the block soil can be changed. 2. A plurality of seedling trays having mutually different pot opening sizes are selectively used, and the seedling seedlings having the larger pot opening have seedlings placed on a block soil. Set the seedling tray so that the insertion position of the extraction claw is closer to the center from the opening edge of the pot than the insertion position of the seedling extraction claw into the block soil of the seedling in the seedling tray with the smaller opening in the pot part. The seedling take-out device of the transplanter according to claim 1, wherein the position is changed. 3. A seedling take-out claw for taking soil block seedlings one by one from the pot section by inserting the seed block into a block soil in the pot section of a seedling tray having a large number of vertical and horizontal pot sections and then retracting the seed blocks one by one. In a seedling take-out device of a transplanter equipped with a vertical feed mechanism that vertically feeds seedling trays one pitch at a time, a plurality of seedling trays having mutually different pot opening sizes are selected for the vertical feed mechanism. The vertical feed amount switching means for switching the vertical feed amount according to the seedling tray to be used is provided, and when the vertical feed amount is switched by this vertical feed amount switching means, the opening of the pot part is opened. The insertion position of the seedling removal claws of the seedlings of the larger seedling tray into the block soil of the pot section is smaller than that of the seedlings of the seedling tray of the smaller opening of the pot section. Seedling taking out apparatus transplanter, characterized in that the set position of the seedling tray so that the inboard from the rim portion has to be changed. 4. The vertical feed mechanism is provided with a vertical feed drive shaft for vertically feeding the seedling tray, and the plurality of vertical feed drive shafts are provided with engaging teeth of different pitches while rotating in the feed direction. A vertical feed gear is provided, and a plurality of ratchet arms that engage with the engaging teeth of the vertical feed gear and restrict the rotation of the vertical feed gear are provided corresponding to each vertical feed gear, and among the plurality of ratchet arms, The plurality of ratchet arms are selectively engageable with the corresponding vertical feed gears so that one ratchet arm engages with the corresponding vertical feed gears, and the ratchet arms are engaged with the engaging teeth of the vertical feed gears. Along with releasing, the vertical feed gear is rotated by one pitch of the engaging teeth to vertically feed the seedling tray by one pitch, and the ratchet tray is provided with a vertical feed operating means for engaging the ratchet arm with the engaging teeth again. SE The set position of the seedling tray is changed by shifting the positions of the engaging teeth with which the ratchet arm engages when setting the seedling tray in the circumferential direction with respect to the longitudinal feed gears. 3. The seedling take-out device of the transplanter described in 3. 5. The vertical feed mechanism is provided with a vertical feed drive shaft for vertically feeding the seedling tray, and the plurality of vertical feed drive shafts are provided to rotate together with each other in the feed direction and to have engaging teeth of different pitches. A vertical feed gear is provided, and a plurality of ratchet arms that engage with the engaging teeth of the vertical feed gear and restrict the rotation of the vertical feed gear are provided corresponding to each vertical feed gear, and among the plurality of ratchet arms, The plurality of ratchet arms are selectively engageable with the corresponding vertical feed gears so that one ratchet arm engages with the corresponding vertical feed gears, and the ratchet arms are engaged with the engaging teeth of the vertical feed gears. Along with releasing, the vertical feed gear is rotated by one pitch of the engaging teeth to vertically feed the seedling tray by one pitch, and the ratchet tray is provided with a vertical feed operating means for engaging the ratchet arm with the engaging teeth again. SE The set position of the seedling tray is changed by mutually shifting the engaging portions of the ratchet arms that engage with the engaging teeth when the seedling tray is set. Seedling removal device for transplanters. 6. A seedling taking out method, wherein when picking up soil block seedlings from a pot portion of a seedling tray, the seedling taking nails are inserted into the seedling block soil and then retracted to take out the seedlings. In the case where multiple seedling trays with different opening sizes of the pot part are selectively used in the pot part, when inserting the seedling extraction claws into the seed block soil of the seedling tray with the larger opening part of the pot part, The seedling take-out claw is inserted so that it is closer to the center from the opening edge of the pot than the position where the seedling take-out claw is inserted into the block soil of the seedling in the smaller seedling tray. Method.