JPS61209512A - Seedling feed mechanism of block seedling transplanter - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a seedling supply mechanism of a lock seedling transplanter that automatically transplants block seedlings into ridges.

(Prior art) As a conventional transplantation machine of this type, Japanese Patent Application Laid-Open No. 58-1903
There is one disclosed in Publication No. 02. This conventional technology is
A seedling receiver for receiving unit block ridges from a seedling supply device is provided on a swinging frame that moves up and down reciprocally by a crank rotating shaft and a swinging arm lever, and a planting opening/closing part at the bottom of this seedling receiver and the above-mentioned crank are provided. Between the rotating shaft and the spring mechanism, there is a spring mechanism that normally springs to open the implanted opening/closing part, and a spring mechanism that is interlocked with the crank rotating shaft and is connected to the spring mechanism within a predetermined range from the upward stroke to the downward stroke of the swing frame. It is configured with a cam mechanism that forcibly closes the implanted opening/closing part against the force.

The seedling feeding device is configured such that expandable clamping plates are provided on the left and right sides of a downwardly inclined receiving plate on which block seedlings are placed, and one of the clamping plates pushes out the pro-tsuku seedlings at the tip of the receiving plate. ing.

(Problems to be Solved by the Invention) In the prior art, the block seedlings are allowed to slide down on the receiving plate and are not forcedly fed, so it is difficult to expect reliable supply (also, the block seedlings on the receiving plate are not forced to be fed). Since the direction in which the seedlings slide down and the direction in which they are pushed out to the seedling receiver are perpendicular to each other, the seedlings in the waiting block that follow are pressed against the seedlings in the supply block, making it difficult to supply the seedlings.

(Means for Solving the Problems) In view of the problems of the prior art, the present invention supplies block seedlings 2 using a belt conveyor 26, and also provides a stopper 28 and a stopper provided on the front end side of the belt conveyor 26. An actuation mechanism 43 is used to reliably supply seedlings one by one in synchronization with the movement of the seedling receiver 5.

The concrete configuration of the problem solving means in the present invention includes a feeding mechanism 3 for block seedlings 2, a seedling receiver 5 for guiding and releasing the block seedlings 2 supplied from the feeding mechanism 3 into the ridges 4, and a seedling receiver In the block seedling transplanter, the feeding mechanism 3 has a drive mechanism 6 that reciprocates the block seedlings 5 from a block seedling receiving position to a releasing position, and a moving body 10 that supports the feeding mechanism 3 and the driving mechanism 6. a heald conveyor 26 for placing and sending seedlings faster than the seedling receiving speed of the seedling receiver 5;
A stopper 28 for regulating the supply of block seedlings 2 is provided at the front end side of the belt conveyor 26, and a stopper 28 for regulating the supply of block seedlings 2, and a stopper 28 for stopping the supply of subsequent block seedlings 2 after supplying one block of seedlings 2 in synchronization with the movement of the seedling receiver 5. It is characterized by having a stopper operating mechanism 43 that operates the stopper 28.

(Function) The block seedlings 2 are placed and conveyed on the belt conveyor 26, and delivered to the seedling receiver 5 from the front end thereof. Belt conveyor 2
Reference numeral 6 indicates the receiving speed of the seedling receiving tube 5, that is, the seedlings are being conveyed faster than the planting speed, and the supply of block seedlings is regulated by a stopper 28 provided on the front end side. The stopper 28 is operated by a stopper operating mechanism 43 in synchronization with the movement of the seedling receiver 5 to stop the supply of block seedlings, and when released, only one block of seedlings is reliably supplied to the seedling receiver 5. be done.

(Example) Embodiments of the present invention will be described below with reference to the drawings.

In FIGS. 1 to 6, the transplanting machine 1 includes a feeding mechanism 3 for a professional 7-grilling tube 2, a seedling receiving tube 5 for receiving block seedlings 2 from the feeding mechanism 3 and transplanting them into the ridges 4, and a seedling receiving tube 5 for receiving the block seedlings 2 from the feeding mechanism 3 and transplanting them into the ridges 4. A drive mechanism 6 that reciprocates between the supply mechanism 3 and the ridge 4, a mechanism 8 that opens and closes the opening/closing lid 7 provided at the bottom of the seedling receiver 5, and a mechanism 8 that supports and drives these mechanisms 3, 6.8. Mobile body 10 with wheels 9
It is equipped with

The movable body 10 has a shaft support 13 fixed to a frame 12, an axle 14 of a drive wheel 9 supported on the shaft support 13, and a shaft support rod 15 swingably extended rearward from the axle 14. , a tail wheel 16 is provided at the rear end of this shaft support rod 15, and this shaft support rod 1
A height adjustment rod 17 is provided between 5 and the frame 12. Reference numeral 18 denotes a handle projecting rearward and upward from the frame 12. A motor 2° (or engine) and a battery of the drive mechanism 6 are mounted on the front part of the frame 12, and a drive shaft 21 is supported at the center thereof. Power is transmitted from the motor 2o via the winding transmission means 22.

Further, the motor 20 drives the wheels 9 via a winding transmission means 23. Note that the axle 14 may transmit power via the drive shaft 21.

The supply mechanism 3 is supported at the rear upper part of the frame 12, and has a belt conveyor 26 to which power is transmitted from the drive shaft 21 via a winding transmission means 24.

The belt conveyor 26 can place and transport the block seedlings 2,
The front is inclined slightly downward, and a seedling room stand 27, which is also inclined downward in the front, is arranged behind and on the side thereof. Nursery stand 2
A large number of block seedlings 2 grown in seedling trays 7 and 7 are placed thereon, and a worker takes the block seedlings 2 from this seedling stand 27 and places them on the belt conveyor 26 artificially and randomly. It is possible to arrange the block seedlings 2 in a line on the nursery table 27 and automatically distribute them onto the belt conveyor 26 using the extrusion mechanism. It is also possible to configure so that the seedlings 2 are placed in the whole seedling raising box.

A pair of left and right stoppers 28 are provided at the front upper part of the belt conveyor 26 to guide and stop the movement of the block seedlings 2. In FIG. 2.6, the left and right stoppers 28 are supported by a pair of left and right mounting plates 29 which are fixed to the frame frame 12 so as to be able to freely adjust the interval, via front and rear rods 30 and 31, so as to be slidable in the left and right direction. The front and rear rods 30 and 31 are provided with springs 32 and 33 for returning to their positions.

The distance between the left and right stoppers 28 is gradually narrowed at the front.
The block seedling 2 is held against the spring 32 by the left and right stoppers 2.
Move while pushing out 8. Thereby, the block seedlings 2 are aligned and guided.

A guide rod 34 is protruded from one side of the mounting plate 29, and a pushing plate 36 fixed to a sliding cam 35 is fitted into the guide loft 34 to guide linear movement.

This pushing plate 36 has a front rod 30 of one stopper 28.
A pushing member 37 facing the is attached via a nut 38 so that the opposing position can be freely adjusted.

A fixed cam 4 is mounted on the rotating shaft 40 at the front of the belt conveyor 26.
1 and the sliding cam 35 are provided, and both cams 35
．． 41 has an inclined cam surface 42 facing each other, and when the fixed cam 41 rotates, the sliding cam 35 slides on the rotating shaft 40 in the left-right direction A, and the sliding cam 35 slides on the rotating shaft 40 in the left-right direction A. The pushing member 37 is brought into contact with the front rod 30 by pressing the button. This eliminates the escape of the front rod 30 and prevents the stopper 28 from sliding.
Block seedling 2 will be stopped.

The speed at which the belt conveyor 26 conveys the block seedlings 2 is
The planting speed is set faster than the speed at which the seedling receiver 5 receives the block seedlings 2, and the speed at which the stopper 28 acts to stop the block seedlings 2 is synchronized with the seedling receiver 5. At the same time that one block seedling 2 is supplied to the seedling receiver 5, the stopper 28 is activated to stop the movement of the subsequent block seedlings, and then belt the block seedlings until the seedling receiver 5 comes to receive them. It is held on the conveyor 26.

The pair of cams 35 and 41, the pushing plate 36, and the pushing member 37
and the return spring 39 of the sliding cam 35, etc.
Stopper actuation mechanism 4 for deactivating the stopper 28
3 are made up.

The stopper actuating mechanism 43 may be configured such that the left and right stoppers 28 are always kept in a blocked seedling state, and one of the stoppers 28 is opened and expanded by a tension member provided on the pushing plate 36, or by a link mechanism. It can also be configured to open and expand the left and right sides at the same time. Further, a crank arm 46 is integrally and rotatably attached to the drive shaft 21, and a swinging rod 47 is pivotally supported in front of the crank arm 46. It is pivotally connected to the rod 47.

The seedling receiver 5 is attached and supported at the rear end of the support rod 48. The seedling receiver 5 has a cylinder body 5a which is triangular in side view, rectangular in rear view, and U-shaped in cross section, and an opening/closing lid 7 forming a front wall of the cylinder body 5a.

The cylinder main body 5a has an upwardly curved guide part 5b at the upper part,
The lower end has a serrated portion 5c to facilitate penetration into the soil, and has a shaft 49 near the top. The opening/closing lid 7 is formed of a spring plate or an iron plate, is pivotally supported by the shaft 49, and can freely open and close the lower part of the seedling receiver 5 by rotating it, and by closing the lower part of the seedling receiver 5. It is possible to hold block seedlings 2 inside, and by opening it, the seedling receiver 5
is a rectangular tube with a rectangular cross section that passes through the top and bottom, allowing the held block seedlings 2 to fall and be supplied into the ridge 4.

Since the opening/closing lid 7 is opened slowly, the block seedlings inside slide down gently and do not fall suddenly and change their posture.

One end of an opening/closing rod 51 is connected to the front surface of the opening/closing lid 7, and the other end of this opening/closing rod 51 is slidably passed through a pivot shaft 52 provided in the middle of the swinging rod 47, and a spring is attached to the opening/closing rod 51. 53, it is always pressed in the closing direction.

A swing regulating body 54 (nut) whose position can be freely adjusted is provided on the other end side of the opening/closing rod 51, and restricts the sliding of the opening/closing rod 51 beyond a certain level so that the tube body 5a of the seedling receiver can be moved toward the pivot 52.
When the opening/closing rod 51 moves away from the opening/closing lid 7 by a certain distance or more,
The lid opening/closing mechanism 8 is configured to prevent further accompanying movement of the opening/closing lid 7 and relatively open the opening/closing lid 7.

The crank arm 46 is driven clockwise in FIG. 1, and this direction of rotation is the same as the forward rotation of the drive wheel 9. Due to this rotation of the crank arm 46, the lower part of the seedling receiver 5 is rotated in a vertically long direction. It will move while drawing an elliptical (pseudo-elliptical) trajectory B, and the lower part of the elliptical trajectory B plunges into the ridge 4, and descends from above to the bottom of the moving aircraft 10 in the ridge and plunges into it. After completion, it gradually moves backward and upward.

The elliptical trajectory B is the trajectory of the seedling receptacle 5 when the mobile body 10 is stopped. If it moves forward by a distance S, the direction of movement is opposite and the speeds are equal, so the seedling receiver 5 does not move forward or backward with respect to the ridge 4, but only moves up and down approximately vertically at the entry position. However, this is effective when the seedling receiving tube 5 is a square tube up to the bottom, and it is necessary to configure it so that the block seedlings 2 can be released by opening the lower surface of the square tube with an opening/closing lid. However, if the seedling receiving tube 5 is an inverted triangle as in this embodiment, the block seedlings cannot be released unless the tube body 5a is separated from the opening/closing lid 7 by a certain distance, so the mobile body 10 moves by a distance S. A speed difference is set so that the seedling receiving tube 5 is moved by a distance between the two. Moving the seedling receiver 5 a distance pushes the mobile body 10 in the forward direction C, and the planting does not become a resistance to the work.

When the seedling receiving tube 5 reaches the upper end position of the elliptical path B (seedling receiving position), it comes closest to the front end of the belt conveyor 26 and can receive fallen bacteria, but it also ensures more reliable delivery of the block seedlings 2. A seedling guide member 56 is provided for this purpose.

As shown in FIG. 4, the seedling guide member 56 is rotatably supported at its upper part by a gate-shaped frame 57 erected on the frame frame 12 via a horizontal shaft 58 whose vertical position is adjustable. axis 58
As shown in FIG. 1, the spring 59 provided in the gate frame 57 and the stopper 61 provided in the gate frame 57 are arranged in a position that allows one block seedling 2 to be held between them with respect to the belt conveyor 26, as shown in FIG. The belt conveyor 26 can be rotated elastically downward.
The block seedling 2 held between the two falls.

An engagement piece 60 is protruded from the lower surface of the seedling guide member 56, and this engagement piece 60 can be engaged with the end of the support rod 48 above the seedling receiver 5 that has moved upward. By engaging, the support rod 48 rotates the seedling guide member 56 downward, and the seedling receiving tube 5
receives the block seedlings 2 sliding down on the seedling guide member 48.

Since the transplanter 1 needs to drive only the drive shaft 9 when carrying it into and out of the field, a power cutoff latch is provided in the power transmission system to the drive shaft 21 and the power transmission system to the axle 14, respectively. put. In addition, the clutch for the drive shaft 21 includes a fixed position disconnection latch (for example, the known technology Japanese Patent Publication No. 44-2
It is preferable to apply a rice transplanter stopping device as shown in Japanese Patent No. 5606.

The transplanter 1 can also be configured to include a plurality of sets of belt conveyor 26 and seedling receivers 5, etc., so as to perform simultaneous planting in double rows, double rows, etc., or staggered planting.
A soil covering device may be provided on the pivot rod 15 or the frame 12, and soil may be supplied to cover the block seedlings 2 after planting. Furthermore, the seedling guiding member 56 and the stopper 28 are configured to be interlocked via a link mechanism or a solenoid, so that the seedling guiding member 56 is interlocked with the upward movement of the block seedling 2 after it has fallen. to deactivate the stopper 28,
One block seedling may be supplied.

The transplanting machine 1 having the above configuration is particularly suitable for planting block seedlings 2 such as lettuce or Chinese cabbage in the ridges 4 covered with mulch film.

The work operation is to move the transplanter 1 forward in the direction of arrow C while straddling the ridge 4, and at the same time, the worker appropriately places the block seedlings 2 on the belt conveyor 26. , a stopper 28 at the tip of the belt conveyor 26
When the movable cam 35 moves the pushing member 37 backward to make the stopper 28 freely openable and expandable, the stopper 28 is pushed away and the belt conveyor 26 and the seedling guide member 5 are guided.
6. After that, the stopper operating mechanism 43
The stopper 28 is actuated to stop the supply of the subsequent block seedlings 2 on the belt conveyor 26 and to hold the block seedlings behind it.

When the seedling receiver 5 moves in a pseudo-elliptical trajectory B and reaches the upper receiving position by the crank arm 46 rotating in the same direction as the drive wheel 9, the support rod 48 engages with the engagement piece 60. The seedling guide member 56 is moved downward, and the block seedlings 2 held by it slide down into the seedling receiver 5. At this time, since the block seedlings slide on the seedling guide member 56, their posture at the time of feeding remains normal and stable, and is protected from breaking.

The seedling receiver 5 that has received the block seedlings moves downward, and its lower part breaks through the mulch film and enters the ridge 4. From around this time, the sliding regulating body 54 of the opening/closing rod 51 comes into contact with the pivot 52 and restrains the movement of the opening/closing lid 7. On the other hand, the cylinder body 5
a moves further rearward with respect to the mobile body 10, and the seedling receiver 5
The lower part is opened and the block seedlings 2 that were being held are released into the ridge 4.

While the seedling receiver 5 enters the ridge 4, the mobile body 10 moves forward by approximately a distance S, and the position of the seedling receiver 5 with respect to the ridge 4 hardly changes, leaving only the block seedling 2 and moving upward. . Therefore, only the square holes can be punched in the mulch film, and it will not be deformed or caught and seriously torn.

After planting, the seedling receiver 5 is moved upward, and the opening/closing lid 7 is closed by the action of the spring 53, so that the seedling receiving tube 5 becomes ready for delivery of the seedlings.

(Effects of the Invention) According to the present invention described in detail above, the block seedlings 2 are supplied to the seedling receiver 5 by the belt conveyor 26, so the seedlings can be supplied forcibly and reliably, and the stopper actuating mechanism 43 causes the stopper 28 to is activated to stop the supply of subsequent block seedlings, so that the preceding block seedlings can be delivered to the seedling receiving tube 5 without being affected by the following block seedlings, and the belt conveyor 26
Since the block seedlings are transported faster than the seedling receiving speed, the block seedlings can be held by the stopper 28, and even if the block seedlings are placed randomly on the belt conveyor 26, the seedlings will not be transferred. Supply can be secured.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is an overall side view, FIG. 2 is an overall plan view, FIG. 3 is a side view of the main part showing the state when the ridge is planted, and FIG. 4 is a seedling. FIG. 5 is a perspective view of the guide plate, FIG. 5 is a perspective view of the seedling receiver and drive mechanism, and FIG. 6 is an enlarged plan view of the supply mechanism. l... Transplanter, 2... Block seedling, 3... Feeding mechanism, 4... Ridge, 5... Seedling receiver, 6... Drive mechanism,
7... Opening/closing lid, 8... Opening/closing mechanism, 9... Drive wheel,
10... Mobile body, 26... Belt conveyor, 27
... Seedling stand, 28... Stopper, 29... Mounting plate, 35... Sliding cam, 37... Pushing member, 41...
Fixed cam, 43...Stopper operating mechanism. I2I! I #I3r! II

Claims (1)

[Scope of Claims] 1. A feeding mechanism 3 for block seedlings 2, a seedling receiver 5 for guiding and releasing the block seedlings 2 supplied from the feeding mechanism 3 into the ridges 4, and a seedling receiver 5 for feeding the block seedlings 2 into the block seedlings. In a block seedling transplanter having a drive mechanism 6 that reciprocates from a receiving position to a discharge position, and a moving body 10 that supports the supply mechanism 3 and the drive mechanism 6, the supply mechanism 3 has a block seedling 2 placed thereon. A belt conveyor 26 that feeds the seedlings faster than the seedling receiving speed of the seedling receiver 5, a stopper 28 that regulates the supply of block seedlings 2 at the front end side of the belt conveyor 26, and a stopper 28 that controls the supply of block seedlings 2 in synchronization with the movement of the seedling receiver 5. A seedling supply mechanism for a block seedling transplanter, comprising a stopper operating mechanism 43 that operates the stopper 28 to stop the supply of subsequent block seedlings 2 after supplying the block seedlings 2.