JP2618089B2 - Seedling receiving device closing device at the seedling transfer part of the transplanter - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a transplanter, particularly to a walking type transplanter.

(Prior Art) In a field transplanter for transplanting potted seedlings such as vegetables, when delivering a seedling that can be moved up and down, an operator has transferred the seedling on a seedling mounting table to the transplanting cylinder.

(Problems to be Solved by the Invention) In the above-described conventional technology, since the delivery is performed manually, if the delivery timing is shifted, the so-called lack of stock is caused.

Further, the seedling mounting table is a so-called turntable type, and the seedling supply mechanism by the turntable is intermittently rotated to transfer the seedlings one by one to the transplanting cylinder, or in place of the turntable, for lateral feeding. If the seedlings are delivered one by one to the transplanting tube at the delivery end of the conveyor, the movement timing of the turntable and the traverse conveyor and the transplanting tube is likely to shift. Had become.

Therefore, between the seedling supply mechanism and the transplant tube, provided a seedling delivery portion for temporarily holding the seedlings dropped from the supply mechanism, when the posture of the temporary holding receiver is changed to the holding posture and the opening posture, If the closing timing of the receiving device is shifted, the supply of the seedlings becomes substantially difficult.

In view of the above-mentioned circumstances, the present invention provides a seedling receiving device for any of the lateral feeding conveyor and the turntable seedling supply mechanism. It is an object of the present invention to automatically close a seedling receiving device in a posture in relation to the movement of a transplant tube.

(Means for Solving the Problems) In the present invention, a transfer cylinder is connected to the traveling body 4 via a link mechanism 31.
A seedling delivery section for providing the seedlings A to the transplanting tube 32, and temporarily holding the seedlings A dropped from the feeding mechanism 10 and transferring the seedlings A to the transplanting tube 32; The following technical measures are taken to achieve the above-mentioned object in the transplanter equipped with 37.

That is, in the present invention, the seedling transfer section 37 includes
And a seedling receiving device 39 whose posture can be freely changed between a holding position for holding the seedlings A and an opening position for transferring the seedlings A to the transplanting tube 32. The closing mechanism 45 is provided in the link mechanism 31, the transplanting cylinder 32 is raised,
It is characterized by having an opening tool 44 for opening the seedling receiving tool 39 when facing the seedling transfer section 37 up and down.

(Operation) When the transplanting tube 32 rises and is opposed to the seedling transfer section 37 up and down, the seedling receiving device 39 holding the seedling A is opened and transferred to the transplanting tube 32, and the transplanting tube 32 descends and moves downward. After the transplanting of the seedling A, the closing mechanism 45 is actuated to push the seedling holder 39 in the open position to the closed position by the link mechanism 33 when the transplanting tube 32 is in the ascending process.

(Embodiment) Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. In FIGS. 6 and 7 showing the entirety of the transplanter, 1 is a field ridge covered with a multi-film 2. , This ridge 1
The transplanter 3 runs over the vehicle.

The transplanting machine 3 is a traveling type, and includes a seedling box guiding means 5, a seedling box feeding means 6, a seedling pushing means 7, and a lateral feeding means 8 on one side of the rear part of the running body 4, and these constitute a seedling supply mechanism 10. In addition, the sending end of the transverse feeding means 8 is provided with a pricing means 9 and the like. The fuselage 4 includes a front wheel 11 on one side of the part and a rear wheel 11A on both sides of the rear part. The rear wheel 11 is powered by an engine 12 mounted in the center.
A is driven to drive. A handle 13 is provided at the center of the rear end of the body 4.

The seedling box guide means 5 is for guiding the seedling box 14 from above to below. As shown in FIGS. 8 to 10, a guide plate 15 curved in an arc shape and a guide plate A guide side plate 16 having an inverted L-shaped cross-section fixed in a curved shape on both left and right sides of 15
And an arc-shaped guide piece 17 fixed inside each guide side plate 16
And comprising.

The seedling box 14 is made of thin plastic, has a large number of pots 18 in the vertical and horizontal directions as shown in FIG. 8, and has feed holes 19 formed at the left and right ends at the same pitch as the pots 18 in the vertical direction. . Each feed hole 19 is provided so as to coincide with the center of the pot portion 18, and an extrusion hole 20 'is provided at the bottom of each pot portion.
Are formed. The seedling box 14 is loaded into the seedling box guiding means 5 such that both right and left edges are between the holding portion 16a of the guide side plate 16 and the guide piece 17, and the bottom surface of the pot portion 18 is
It is guided along the guide plate 15 so as to slide on the upper side.

The seedling box feeding means 6 has a feeding claw to be engaged with the feeding hole 19, and is for intermittently feeding the seedling boxes 14 loaded in the seedling box guiding means 5 from above to below by one pitch. is there. The seedling pushing means 7 is for simultaneously pushing a row of seedlings A in the seedling box 14 onto the transverse feeding means 8. The seedling box feeding means 6 and the seedling pushing means 7 are arranged such that the seedling pushing means 7 is located at the center inside the curved portion of the seedling box guiding means 5 and the seedling box sending means 6 is located on both left and right sides thereof. Are located.

The seedling pushing means 7 is, as shown in FIGS. 9 and 10,
The same number of extrusion rods as the number of pots (7 in the embodiment) arranged in a row corresponding to each pot 18 in a row of the seedling box 14
Each extrusion rod 20 is mounted on an extrusion frame 21 so as to protrude forward. The extrusion frame 21 is supported and guided slidably back and forth by a pair of left and right guide rods 23 fixed to a support plate 22, and the extrusion frame 21 is connected to an extrusion arm of a rotating shaft inserted and supported by the support plate 22 via a rod. These are a driving mechanism. Each push rod 20
An opening 23 'is formed correspondingly, and the pushing rod 20 advances and retreats through the opening 23' to push out the seedling A to the lateral feeding means 8.

It should be noted that the phase relationship is such that the seedling pushing means 7 performs the pushing operation after the feeding operation of the seedling box sending means 6 is completed.

The lateral feeding means 8 is for receiving the seedlings A extruded from the row of pot portions 18 of the seedling box 14 by the push rods 20 of the seedling pushing means 7 and intermittently supplying them one by one to the pricing means 9. It is. As shown in FIG. 8, the traverse means 8 includes a chain 2 wound around a pair of right and left sprockets 24 and 25.
6 and an oval guide plate 27 arranged near the rear of the chain 26
And a seedling receiving device 29 pivotally supported by pins 30 at equal intervals on a bracket 28 of the chain 26 and slidably guided by the outer periphery of an elliptical guide plate 27. A cutout 27a is formed in the oblong guide plate 27 at a position corresponding to the pricing means 9 so that the seedling receiving tool 29 is tilted around the pin 30 and the seedlings A thereon fall into the pricing means 9. I have.

The pricing means 9 is provided at the delivery side end of the transverse feeding means 8 and has a transplant tube 32 supported vertically by a link mechanism 31 as shown in FIG.

In FIG. 1, a link mechanism 31 includes a first parallel link 33 supported by the traveling body 4 and swinging in the front-rear direction.
And a second parallel link 34 supported by the parallel link 33 and swinging up and down. When the two parallel links 33 and 34 are moved by the rotation of the drive arm 35, the lower end of the transplant tube 32 is moved to the first position. It moves as indicated by the symbol B in the figure.

Therefore, the transplant tube 32 is pivotally connected to the second parallel link 34 in the vertical position, and the lower dead center C in the vertical movement thereof.
The seedlings A pierced into the soil at the same time are priced for the ridges 1, and the seedlings A are received at the top dead center D.

The transplant tube 32 includes a half-cylinder 32A having a U-shape in plan view and a shutter plate 32B rotatably supported by pins 32C on the open side of the half-cylinder 32A. When closed from the front edge of the lower end of 32A, it protrudes 32D downward, and when piercing into the soil, prevents the intrusion of soil into the half cylindrical body 32A,
On the other hand, after piercing the soil, the soil is pressed and released,
Seedling A in it is priced.

Therefore, the shutter plate 32B is pivoted halfway to the second parallel link 34, and the other end is pivoted to the traveling body 4 at the pivot 3A.
6B is connected to the opening / closing link 36 by a pivot pin 36D, thereby opening at the bottom dead center C, gradually closing in the ascending process, and taking a completely closed posture at the top dead center D to receive the seedling A. .

Between the delivery end of the lateral feeding means 8 which is the seedling supply mechanism 10 and the top dead center D of the transplanting tube 32, the seedlings B dropped from the lateral feeding means 8 are temporarily stored and delivered to the transplanting tube 32. Seedling transfer means 37 is provided.

The seedling delivery means 37 is a delivery cylinder 38 supported in a vertical position, and a bottom plate that allows the bottom of the cylinder 38 to be freely opened and closed,
That is, a seedling receiving tool 39 is provided, and the seedling receiving tool 39 is provided on the cylinder 38 so as to be rotatable around a fulcrum shaft 39B.

As shown in FIGS. 3 to 5, one end of the seedling receiving member 39 is attached to the transfer cylinder 38, and the other end is engaged with the seedling receiving member 39 and is bent when the receiving member 39 is closed. A rod-shaped spring 40 for releasing the receiving member that gives elastic storage power, and one end is a cylinder
A rod-shaped spring 42 for holding the closing position of the receiving member, which is pivotally supported by the pin 41, has a coil portion 42A in the middle, has a hook-like portion 42B at the tip, and is detachable from the notch 39A of the receiving member 39. Are provided on both left and right sides, and the bar-shaped spring 4 is attached to the fulcrum shaft 39B.
2 is provided with a crank-shaped arm 43 in which a tip 43A is engaged, and this arm 43 is provided with a pin 43B protruding in the lateral direction.

On the other hand, the pin 43B of the arm 43 is indicated by an arrow E on the transplant tube 32.
The opening 43 is provided for rotating the arm 43 in the direction of arrow F by kicking it to elastically deform the hook-shaped portion 42B in the direction of arrow G and detaching from the notch 39A. In the locus of movement B of the transplant tube 32, when the transplant tube 32 is vertically opposed to the seedling transfer portion near the top dead center, the pin 43B
So that the spring 42
When detached from 39, the receiving device 39 is opened by the action of the spring 40, and the seedling A held by this is dropped and transferred to the transplanting tube 32.

Since the release tool 44 takes a swing locus of up and down and back and forth, it is formed of a rod-shaped body, and by providing a coil spring 44A in the middle of the rod-shaped body, the spring 44A is bent after engaging with the pin 43B. To kick the arm 43, and here, the spring 44A secures the kicking force and reduces the impact.

Further, as shown in FIGS. 1 and 2, when the receiving member 39 is opened, a closing means 45 for forcibly closing the receiving member 39 is provided in conjunction with the link mechanism 31.

The closing means 45 includes an arm 46 projecting from the second parallel link 34 and a play 4 indicated by an elongated hole formed by an upper end pin 46A of the arm 46.
A rod 47 engaged with 7A and an arm 49 having the end of the rod 47 connected via a ball joint 48, the arm 49 having a fulcrum 50A on a stay 50 provided on the fixed side.
, And is rotatable on a horizontal plane, and has a push plate 49A at its tip.

Further, a relay push rod 51 and a push rod 53 urged in a return direction (pulling direction) by a coil spring 52 are supported on a fixed side between the push plate 49A of the arm 49 and the receiving member 39, And a U-shaped guide support fitting 54 which slides in the longitudinal direction of the rod.
When the rod 47 is interlocked in the direction by the action of the parallel link 34, the arm 49 swings in the direction of arrow H, and the push rod 49A pushes the relay rod 51.
Presses the push rod 53 against the spring 52 via
The opened receiving member 39 is closed against the spring 40, and the closed posture is held again by the spring 42, the arm 43 and the like.

The closing of the receiving member 39 is linked with the play 47A during the transition from the top dead center D to the bottom dead center C of the transplant cylinder 32 or during the transition since the transplant cylinder 32 moves along the locus B. The relationship is stopped, and thereafter, in the process of shifting from the bottom dead center C to the top dead center D by interlocking as described above, the receiver 39 is closed and the seedling A from the seedling feeding means 8 is temporarily held in the delivery cylinder. It has been like that.

In the above-described embodiment, the seedling supply mechanism may use a turntable.

(Effects of the Invention) The present invention is as described above. When the transplanting cylinder rises and is vertically opposed to the seedling transfer section, the seedling receiving device is opened to hold the seedling in the transplanting cylinder, Since the seedlings are transplanted at the bottom dead center and closed during the ascent process, the soil etc. does not enter from the seedling transfer part when ascending into the transplant cylinder after the release of the seedlings,
There is no soil below the seedlings received at the top dead center, and the seedlings are held in the transplanting cylinder in a stable posture. As a result, the posture after planting can be secured.

After the seedling release, until the transplant tube goes to the bottom dead center and moves up
Since the seedling receiving device of the seedling transfer section is kept open, there is little accumulation of dirt such as soil in the seedling transfer section, and it is unlikely to affect the normal posture of the seedling when the next seedling is supplied.

There is no problem that the soil falls on the seedlings in the transplanting tube, and thus there is no shift in the supply timing of the seedlings, the delivery is reliable, and the lack of stock is not caused.

BRIEF DESCRIPTION OF THE DRAWINGS The drawings show an embodiment of the present invention, FIG. 1 is a side view showing the operation, FIG. 2 is a perspective view, FIG. 3 is an enlarged side view, and FIG. , FIG. 5 is a partial plan view, FIG. 6 is an overall plan view of the transplanter, FIG. 7 is the same side view, FIG. 8 is a front view of the supply mechanism, and FIG. FIG. 10 is a plan sectional view of the same. 4 ... running body, 10 ... supply mechanism, 32 ... transplantation cylinder, 31 ...
... link mechanism, 37 ... seedling transfer section, 39 ... seedling receiver,
45 …… Close means.

Continued on the front page (72) Katsumi Hori 17-17, Kidocho, Kawachinagano-shi, Osaka (72) Kenyoshi Nosaka 1-3-2 Kusumachi, Sakai-shi, Osaka (72) Inventor Nobuhide Yanagawa Osaka 1-1013-4 Higashino Nishi, Osaka Sayama City (56) References JP-A-59-28410 (JP, A) JP-A-59-85210 (JP, A) JP-A-54-24730 (JP, A) Hei 2-135009 (JP, A) Actually open 53-165043 (JP, U)

Claims (1)

(57) [Claims] 1. A feeding mechanism (10) for providing a transplanting tube (32) to a traveling body (4) via a link mechanism (31) so as to be movable up and down, and supplying a seedling (A) to the transplanting tube (32). And a seedling transfer section (37) for temporarily holding the seedling (A) dropped and supplied from the supply mechanism (10) and transferring it to the transplant tube (32). 37) includes a seedling receiving device (39) whose posture can be freely changed between a posture for holding the seedling (A) and an open posture for transferring the seedling (A) to the transplanting tube (32). The link mechanism (31) is provided with a closing means (45) for setting the seedling receiving device (39) in the open position to the seedling holding position in the rising process of the seedling, and the transplant tube (32) is raised to the seedling transfer portion (37). A transplanter comprising an opening tool (44) for opening a seedling receiving tool (39) when facing up and down.