JPS60217814A - Seeder for seedling - 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 Field of Application) The present invention relates to a seedling-raising seeding machine that has four parts formed on the floor of a seedling-growing box and sows seeds into all the concave parts at once.

(Conventional Device) When growing seedlings for a rice transplanter using a seedling nursery box, if the seeds are sown on the top surface of a flat soil bed, the seeds may be moved during supply of covering soil or irrigation. Therefore, in order to enable more accurate spot sowing or row sowing, it has been considered to form a seeding recess on the upper surface of the bed and supply seeds to this seeding recess.

When a large number of such recesses are arranged in a row, if seeds are sown sequentially from the edge of the seedling nursery box, the sowing position may shift with respect to the recesses, and accurate sowing may not be possible.

As a conventional device, a seeding device as shown in Japanese Utility Model Application Publication No. 56-52914 has been devised. This 11-seed tool has a shutter that also has a large number of receiving holes placed on a seeding board that has a large number of seeding holes, and slides the shutter to align the receiving holes with the seeding holes when the seeds are to be manipulated in the receiving holes. This makes it possible to accurately feed the recesses on the floor.

(Problems to be Solved by the Invention) The sowing tool of the conventional device has to be manually placed in the seedling nursery box, and seeds are also manually supplied onto the sowing tool. It was difficult to do so.

In addition, as a device using this type of sowing tool,
There is a device disclosed in Japanese Patent No. 54729, but it is similar to the conventional device in that it requires a sowing tool for each seedling-growing box and requires manual placement and seed supply.

(Means for Solving the Problems) In view of these various conventional problems, the present invention provides a seeding member 51 having a seed holding portion 59 capable of releasing seeds 6.
is configured to be able to move up and down freely and horizontally, and by descending, it is possible to sow seeds in the sowing recess of the seedling nursery box, and by moving horizontally, the seeds 6 are supplied from the seed supply mechanism 9 to the holding section 59. An object of the present invention is to provide a seedling seeding sowing machine that can automatically perform the following steps.

To achieve this object, the present invention is characterized by a conveying device 3 that intermittently conveys a seedling raising box 2 in which a large number of sowing parts 26 are placed on the upper surface of a laid floor ±25;
It is equipped with a sowing device 5 that supplies seeds 6 at once to the all-seeding concave 1 (26) of the seedling-raising box 2 which is disposed on both sides of the transport device 3 and stopped, and the sowing device 5 A sowing mechanism 7 which has a sowing member 51 having a seed holding part 59 formed thereon opposite to the recessed part 26 and capable of discharging seeds 6, and in which the sowing member 51 can be raised and lowered with respect to the floor 25 and can be horizontally reciprocated. , and a seed supply mechanism 9 that supplies seeds 6 to the seed holding section 59 when the sowing section 51 horizontally reciprocates.

(Function) When the seedling raising box 2 in which a large number of sowing recesses 26 are formed in advance on the upper surface of the laid floor ±25 is placed on the conveying device 3 and conveyed to the sowing device 5, the sowing member 51 of the sowing mechanism 7 The sowing member 51 stops at the bottom, detects this, and descends. The seeding member 51 is formed with a large number of seed holding portions 59, and by descending, it faces all the seeding recesses 26 and releases the seeds 6 therein at once.

Then, the sowing member 51 is horizontally reciprocated to the seed supply mechanism 9, and the seeds are supplied to the holding portion 59 from which the seeds 6 have been released.

In addition, in the following embodiments of the present invention, the on-floor drilling device 4
In combination with this, a seeding machine has been shown that can continuously perform the process from drilling holes on the bed to sowing seeds. Alternatively, the seed supply mechanism 9 may be placed on the upper side of the sowing mechanism 7 in the conveyance direction, that is, the conveyance direction may be reversed.

(Example) Embodiments of the present invention will be described below based on the drawings.

FIG. 1 shows the entire seedling-raising seeding machine 1, which is roughly divided into a conveying device 3 on which a seedling-raising box 2 is placed and conveyed intermittently, and an above-the-floor hole provided on the upper side of the conveying device 3. The sowing device 5 includes a sowing device 4 and a sowing device 5 which is also arranged on the upper and lower side, and the sowing device 5 includes a sowing mechanism 7 that supplies seeds 6 into the seedling raising box 2, and a sowing mechanism 7 that supplies the seeds 6 from a sowing device 8. It has a seed supply mechanism 9.

As shown in FIG. 1.3.4, the conveyance device 3 has a plurality of rotating shafts 13 mounted on a pair of left and right frames 12 having a U-shaped cross section with outward openings, and a plurality of rollers mounted on each of the rotating shafts 13. 14
In addition, a sprocket 15 is provided at the end of the rotating shaft 13 in the frame 12, and the power from the motor 16 attached to the frame 12 can be transmitted to each sprocket 15 via the chain 17. By operating intermittently, the seedling growing box 2 placed on the rollers 14 can be transported intermittently in the convex direction of the arrow. A conveyor 18 is formed by the rollers 14 and the like, and the conveyor 18 can also be replaced by a heald conveyor.

The above-mentioned floor drilling device 4 is shown in detail in FIGS. 3 to 5, and a drilling plate 22 is disposed in a casing 21 mounted on the left and right frames 12 on the conveyor 18 so as to be movable up and down.

This perforated plate 22 has a large number of protrusions 24 fixed to the lower surface of a plate material 23 by thermocompression bonding, bolts, adhesive, or the like. The protrusions 24 are formed by arranging rod-like objects in a vertical and horizontal direction for spot sowing, and by arranging plate-like objects in a direction perpendicular to the conveyance direction A for row sowing. The protrusion amount of the protrusion 24 is sufficiently larger than the distance from the upper edge of the seedling raising box 2 to the upper surface of the floor ±25, and by being pressed against the upper surface of the floor, the four sowing parts 26
form.

The lower end of a screw rod 27 is pivotally connected to the square of the perforated plate 22, and the screw rod 27 is connected to the upper wall 21 of the casing 21.
a and the support plate 28 fixed to its upper surface,
A female screw member 30 to which a sprocket 29 is fixed is screwed together.

A central support plate 31 is fixed to the center of the upper wall of the casing 21, and a motor 32 is mounted on the central support plate 31.
Two vertical shafts 33 and 34 are supported between the top wall 31a and the top wall 31a through bearings. Two sprockets 35 and 36 are fixed to the first vertical shaft 33, the upper sprocket 35 is transmitted via a chain from the sprocket 37 of the motor 32, and the lower sprocket 36 together with a sprocket 38 provided on the second vertical shaft 34. A chain 39 is wound around a sprocket 29 screwed onto four screw rods 27, and the rotation of the motor 32 is transmitted to the sprocket 29 to move the screw rods 27 and the perforated plate 22 up and down.

Reference numeral 40 denotes a pair of left and right tension sprockets that mesh with the chain 39, and are each pivotally supported by an arm 41. One end of each arm 41 is attached to a pin 42 supported by the upper wall 21a and the center support plate 31. A tension spring 43 stretched between the left and right arms 41 is connected to the other end. The pair of tension sprockets 40 can apply tension to the chain 39 whether the motor 32 rotates in the forward or reverse direction.

The descending height of the perforated plate 22 is set by the rotation speed of the sensor or motor 32, and by adjusting the descending height, the depth of the seeding recess 26 can be changed. The number of threaded rods 27 for raising and lowering the perforated plate 22 may be more than four (and a hydraulic cylinder or the like may be used instead of the drive system from the motor 32 to the threaded rods 27).

The seeding mechanism 7 is shown in detail in FIGS. 6-9.

Rails 47 having an angled cross section are laid on the left and right pair of frames 12 via brackets 46, and wheel guides 48 are fixed to the upper surfaces of the rails 47. Reference numeral 49 denotes a movable frame formed of a cross-section shaped member, and has a plurality of wheels 50 on the left and right sides that move on rails 47 while being guided by wheel guides 48.

A rectangular seeding member 51 is arranged within the movable frame 49 so as to be movable up and down. This seeding member 51 has a peripheral wall 53 screwed around a seeding plate 52, a shutter 54 is slidably disposed on the upper surface of the peripheral wall 53, and a regulating plate 5 is provided on the inner surface of the peripheral wall 53.
5 prevents the shutter 54 from floating, and a number of guide cylinders 56 are fixed to the lower surface thereof.

The seeding plate 52, shutter 54, and guide tube 56 of the seeding member 51 are made of metal, plastic, etc.
A large number of seeding holes 57 are bored in the seeding hole 57 facing all of the seeding recesses 26 of the bed soil 25 formed by the perforation plate 22.
The guide cylinder 56 is connected to the seeding hole 57, and the shutter 54 has a receiving hole 58 which has approximately the same diameter as the seeding hole 57 and can face it.

The shutter 54 is slidable from a position where the receiving hole 58 is intersected with the seeding hole 57 to a position shown in FIG. 9 (home position) where the receiving hole 58 is closed by the seeding plate 52. By supplying the seeds 6 from the seed hole 58, the seeds 6 enter the receiving holes 58 and are held by the seeding plate 52. Therefore, the sowing plate 52 and the shutter 54 form a large number of seed holding parts 59, and the shutter 54 is
By sliding in the direction, the seeding recess 2 is removed from the seeding hole 57.
Seed 6 is released into 6.

In addition, when the seeding recess 26 is a long groove for row seeding, the seeding hole 57 and the receiving hole 58 are also made into corresponding long holes. Further, instead of the guide cylinder 56, a plate material of a size that can be inserted into the seedling raising box 2 may be fixed to the lower surface of the seeding plate 52, and a hole communicating with the seeding hole 57 may be formed in this plate material. Furthermore, the seeding board 5
The plate material or guide tube 56 may be integrally molded with respect to 2.

Reference numeral 62 denotes sliding means for a shutter provided at one end of the seeding member 51. A motor 64 is mounted on a stand 63 whose both ends are fixed to the peripheral wall 53, and an eccentric shaft 65 is attached to the output shaft of the motor 64. A cam 66 having a diameter is attached.

A bearing 67 is fitted to this eccentric shaft 65, and the shutter 54
It is fitted into a guide body 68 having a U-shaped cross section and fixed to the upper surface of the body.

The amount of eccentricity of the eccentric shaft 65 is half the required sliding distance of the shutter 54, and the motor 64 rotates and the sensor 57 is in contact with the cam 66 in the diametrical direction. Rotate 180° until one of S8 is actuated and the receiver slides shutter 54 to move hole 58 from the closed position to the open position. A hydraulic cylinder can also be used as the shutter sliding means 62.

A casing 71 is fixed to one side of the moving frame 49, a motor 72 is disposed within the casing 71, and a bearing body 73 is provided in front of the motor 72. A male screw 74 supported by a bearing body 73 is connected to the output shaft of the motor 72, and a female screw shaft 75 is screwed into the male screw 74 in an orthogonal direction. Both ends of this female threaded shaft 75 are inserted into an elongated hole 77 in the upper part of the arm 76.

A horizontal shaft 78 is rotatably installed between the left and right side walls of the moving frame 49. The lower part of the arm 76 is fixed to one end of the horizontal shaft 78. The upper end of the swing arm 79 is fixed.

An interlocking link 80 is connected to the lower end of this swing arm 79 with a pin.

Numeral 81 is a bell crank whose middle part is pivotally supported on the side wall of the movable frame 49 via a pin 82, and a plurality of pairs are provided.
One end thereof is connected to the interlocking link 80 by a pin 83, and the other end is connected to the peripheral wall 53 of the seeding member 51 via a pin 84.

The bell crank 81 and the interlocking link 80 are a parallel link mechanism, and the male screw 74 is rotated by the operation of the motor 72.
When the arm 76 rotates, the arm 76 rotates in the direction of arrow C in FIG.
By swinging the swinging arm 79 and swinging the bell crank 81 via the interlocking link 80, the seeding member 51 is raised and lowered relative to the seedling growing box 2. The amount of elevation of the seeding member 51 is set by the rotational speed of the motor 72 or the sensor, and the lower limit position is when the guide tube 56 enters the seedling box 2 and becomes the position 1 to 3II11 above the bed. The seeding member 51
As the elevating means, a hydraulic cylinder may be used instead of the motor 72.

The means for moving the moving frame 49 consists of a rack 87 fixed to a shaft 86 that supports left and right wheels 50, and a pinion in the seed supply mechanism 9, which will be described later. The length from the vicinity of the bell crank 81 to the lower side is approximately the same as the length of the seedling raising box. This movement means can also be formed by a hydraulic cylinder.

The seed supply mechanism 9 is shown in FIGS. 1O to 12,
The hopper 8 is mounted on a support stand 90 fixed on the left and right frames 12.
A support frame 91 to which the seedling raising box 2 is attached is fixed, and a feed roll 92 and two rotating brushes 93 and 94 are arranged along the path of movement of the conveyor 18 of the seedling box 2 and the moving frame 49.

The feed roll 92 is located directly below the hopper 8, and the seeds 6 that enter the multiple feed grooves 95 formed on the outer circumferential surface are guided by a seed guide 96 and fall downward.

Reference numeral 97 denotes a straightening brush that adjusts the amount of seeds that enter the feeding roll 95, and can move forward and backward in the radial direction of the feeding roll 92, and is moved by rotating an adjusting shaft 98 from outside the support frame 91 via a rack and pinion. .

Both ends of the roll shaft 99 of the feed roll 92 are supported by the support frame 91 via bearings, a sprocket 101 is attached to one end via a one-way clutch 100, and a sprocket 102 is fixed to the other end.

A motor 103 is disposed within the support frame 91, and an intermediate shaft 104 to which power is transmitted from the motor 103 is supported. At both ends of this intermediate shaft 104, two sprockets 05. IO6,107゜10
8 is fixed, and a sprocket 105 is wrapped around a sprocket 109 of the motor 103 and a chain 110, so that the sprocket 06 can transmit power to the sprocket 01 of the feed roll 92 via the chain 111.

Reference numeral 113 designates a pair of left and right rotating shafts that are rotatably supported by the support base 90, and each shaft is provided with a sprocket 114 at its outer end and a pinion 115 at its inner end, as shown in FIG. The left and right sprockets l14 are connected to the left and right sprockets 107 and 108 of the intermediate shaft 104 and the chains 116 and 11.
The left and right pinions 115 are engaged with racks 87 provided on the left and right sides of the moving frame 49, and are rotated by the driving force from the motor 103 to move the moving frame 49.
can be moved horizontally back and forth.

Reference numeral 119 denotes a tension sprocket 2 provided on a shaft 121 passing through a horizontal elongated hole 120 of the support frame 91.
At the top, the tension of the left and right chains 116, 117 is adjusted by this tension sprocket 119. One chain 117 is also wound around a sprocket 123 provided on the shaft 122 of the rotating brush 94.

This sprocket 123 is provided on the shaft 122 via a one-way clutch, and drives the rotating brush 94 only in the direction of the arrow.

The rotating brush 93 is for adjusting the seeding amount, and its shaft 12
B is supported on the upper side of the support frame 91, and a sprocket 127 provided at the end of the shaft receives power from the feed roll 92 via a chain 128 and sprocket 102. Rotates only in the E direction.

When the motor 103 is driven from the state shown in FIG. be done. Rotating brush 9
4 prevents seeds accumulated on the seeding member 51 from falling downward. When the motor 103 is reversed after the upper side of the seed retaining portion 59 of the sowing member 51 reaches approximately directly below the feed roll 92, the pinion 11 is
5 reverses and moves the movable frame 49 backward, but the rotating brush 9
4 is not driven by a one-way clutch, but the feed roll 92 is driven through the chain 111, and the rotary brush 93 is driven in the direction of the arrow E through the chain 128, so that seeds [; At the same time, the remaining seeds are removed to the lower side by the rotating brush 93 and the amount of seeds entering the receiving hole 58 is adjusted.

The tip of the rotating brush 93 is inserted into the receiving hole 58, and by adjusting the amount of insertion, the amount of seeds entering the receiving hole 58 can be adjusted within a range of, for example, 2 to 4 seeds. To do this, move the rotating brush 93 up and down.
It may be possible to freely adjust the height of the sowing member 51, but in this case, since the moving frame 49 can be moved up and down, the upper limit height of the seeding member 51 can be adjusted freely.

Incidentally, the rotating brush 94 may be a spiral brush to transfer and remove the seeds 6 accumulated on the seeding member 51 to the side so as not to drop them into the seedling raising box z.

The sowing operation by the sowing machine I having the above configuration will be explained mainly based on FIG. 1.2.

When the seedling raising box 2 on which the bed soil 25 has been laid is placed on the upper side of the conveyor 3, the sensor Sl is turned on to operate the motor 16 and drive the conveyor 18. When the seedling box 2 is transported in the A direction and reaches the bottom of the above-floor drilling device 4, the sensor S2 detects this and stops the motor 16, and at the same time the motor 3
Activate 2.

The perforation plate 22 is lowered by the operation of the motor 32, and the hole plate 22 is lowered to the floor ±2.
A large number of seeding recesses 26 are formed at once on the upper surface of 5 (second
(See Figure, Ha). Sensor S indicates the completion of lowering of the perforated plate 22.
3 is detected, the motor 32 is reversely rotated to raise the perforation plate 22. When the perforation plate 22 completes its ascent or reaches a height at which the protrusion 24 leaves the seedling box 2, the sensor S4 turns ON.
The rotor I6 is reactivated and the seedling raising box 2 is transported to the lower side.

When the seedling raising box 2 in which the seeding recess 26 is formed is conveyed below the seeding mechanism 7, the sensor s5 detects this and stops the motor 16, and also activates the motor 72 to lower the seeding member 51. When the seeding member 51 descends to the height set by the sensor S6, the guide tube 56 comes close to and faces the seeding recess 26 (see FIG. 2-2).

When the sensor S6 is turned ON, the motor 64 is activated, and the shutter 54 is slid through the eccentric shaft 65, and the receiver is connected to the hole 58,
By communicating the seeding hole 57 and the guide cylinder 56, the receiver supplies the seeds 6 held in the hole 58 to all the seeding recesses 26 at once (see FIG. 2E). The motor 64 is connected to the seed holding section 5
The cam 66 turns the sensor S7 to OIL at the 180" rotation position where the seed holder 9 is fully open, and temporarily stops. After a set time, the cam 66 turns to the W (home position) to turn on the sensor S8, and closes the seed holding part 59. Slide the shutter 54 so that the

The rhythm of the shutter 54 can be performed after the sowing member 51 has been raised, but here it is performed when the sowing member 51 is lowered, and the vibrations generated by the sliding movement allow the seeds 6 to be completely ejected from the seed holding portion 59 without clogging. I'm trying to make it happen.

When the sensor S8 turns ON and the shutter 54 returns to the Baum position, the motor 72 reverses, and the seeding member 51 rises. When the sensor S6 detects the completion of the rise, the motor 16 is activated to move the seedling box 2 to the lower side. The seeds are transported until the sensor S9 is turned on, and at the same time, the motor 103 in the seed supply mechanism 9 is activated.

Due to the operation of the motor 103, the moving frame 49 moves on the rail 47 via the rack 87 and the pinion 115,
The seeds are inserted into the seed supply mechanism 9. In addition, the motor 10
3, the rotating brush 94 rotates in the F direction to prevent the seeds on the upper surface of the seeding member 51 from falling.

When the sensor SIO detects that the moving frame 49 has been completely inserted into the seed supply mechanism 9, the motor 103 is reversed and the moving frame 49 is moved back in the G direction, and at the same time the hopper 8
The seeds are fed out in a substantially fixed amount by the feeding roll 92 and supplied to the receiving hole 58 of the shutter 54.

At this time, the rotating brush 93 also rotates in the E direction, and the receiver helps supply seeds to the hole 58, removes excess grains, and adjusts the amount of seeds in the hole 58 to the required amount.

When the moving frame 49 completes its backward movement and reaches the Baum position, the sensor Sll detects this and the motor 103 stops.

The motor 103 operates independently of the motor 16, and if the seedling box 2 reaches the sensor S9 earlier, the moving frame 49
The next seedling raising box may be placed on the upper side of the transport device 3 even when the container is moving backward.

All operations of the seeding machine I are monitored by a timer, and if, for example, the lifting and lowering of the perforating plate 22 or the seeding member 51, the movement of the moving frame 49 or the shutter 54, etc. are not completed within a set time, an abnormality has occurred. As a result, all operations are stopped and hopper 8. All operations are also stopped when the remaining amount detection sensor S12 provided in the seed 6 detects that the remaining amount of seeds 6 is insufficient.

For the sensors S1 to S12, contact switches such as microswitches and limit switches can be used as appropriate, and other non-contact switches may also be used. However, the sensor S6 is a non-contact type, and a magnet is provided on the male screw 74.
The number of rotations is counted, and the motor 72 is operated in forward and reverse directions at a predetermined number of rotations. The upper and lower limit positions of the seeding member 51 are adjusted by changing the set rotation speed.

(Effects of the Invention) According to the present invention described in detail above, the conveying device 3 is capable of intermittent conveying of seedling boxes, and the sowing member 51 is movable up and down, so that a large number of sowing recesses 26 are formed in advance on the floor 25. The seedling raising box 2 is transported and stopped below the seeding member 51,
Moreover, by discharging the seeds 6 from the holding section 59, it is possible to sow the seeds in all the seeding recesses 26 at once and accurately, and the sowing member 51 is horizontally reciprocated to the seed supply mechanism 9 and the seeds are placed in the holding section 59. Since seeds are supplied to the sowing member 51, seeds can be automatically supplied to the sowing member 51, and sowing operations can also be performed automatically.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a general front view, FIG. 2 is an explanatory diagram showing the sowing operation, and FIG.
Figure 5 shows the bed soil drilling device, Figure 3 is a sectional front view, Figure 4 is a sectional side view, Figure 5 is a partially sectional plan view, and Figures 6 to 9.
The figures show the seeding mechanism, FIG. 6 is a partially sectional front view, FIG. 7 is a sectional side view, FIG. 8 is a partially sectional plan view, and FIG. 9 is a partially sectional front view.
An enlarged cross-sectional view taken along the ■-■ line in the figure, Figures 1θ to 12 show the seed supply mechanism, Figure 10 is a partially cross-sectional front view, Figure 11 is a cross-sectional side view, and Figure 12 is a cross-sectional plan view. be. 1-Seeding machine for seedling-raising, 2--seedling-raising box, 3--conveying device, 4
-Bed soil drilling device, 5-.-Seeding device, 61 seeds, 7-
Seeding mechanism, 91 Seed supply mechanism, 22- Hole plate, 25-
bed soil, 26-seeding recess, 49- moving frame, 51--seeding member, 52--seeding board, 54- shutter, 57-
Seeding hole, 58-receiver hole, 59-seed holding part, 92-feeding roll. Patent applicant: Daiwa Seiko Co., Ltd.

Claims (1)

[Claims] 1. A transporting device 3 that carries a seedling raising box 2 in which a large number of sowing recesses 26 are formed on the upper surface of a laid floor 25 and transporting it intermittently, and a seedling raising box that is disposed above this transporting device 3 and is stopped. The seeding device 5 is equipped with a seeding device 5 that supplies seeds 6 to all the seeding recesses 26 at once, and the seeding device 5 supplies seeds 6 to all the seeding recesses 26 at once.
This seeding mechanism 7 has a tti seeding member 51 formed with a seed holding part 59 that can release seeds 6 opposite to the seeding mechanism 7, and the seeding member 51 is movable up and down with respect to the floor ±25 and can be horizontally reciprocated. and a seed supply mechanism 9 that supplies seeds 6 to a seed holding section 59 when the sowing member 51 horizontally reciprocates.