JPH0742248Y2 - Seedling extrusion equipment - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling extruding device for sequentially extruding seedlings from a seedling raising seedling box for transplanting seedlings grown in the seedling raising seedling holder.

[0002]

2. Description of the Related Art Heretofore, seedling extrusion devices for extruding seedlings from this seedling raising seedling box can be roughly classified into a single extrusion method and a multiple extrusion method. The one-time extrusion method is based on the actual method of Sho 64-4590.
As shown in No. 8 seedling transfer device, seedlings are extruded forward from a lateral row of seedling chambers of a nursery box for raising seedlings, and a plurality of conveyors arranged on a fan-shaped substrate and capable of curving laterally are provided. The seedlings are stored in the sliding contact body of and transferred to the front.

The reason for this is that the pitch between seedling chambers in a nursery box for raising seedlings is as narrow as 16.5 mm, and when transplanting is performed at this spacing, in the case of a tape type seedling transplanter that uses a tape seedling bundle,
Generally, a transplanting interval of about 105 to 130 mm is required. Therefore, a tape seedling bundle having a seedling interval of about 16.5 mm has a large variation between transplanted plants. The same thing can be said for the direct transplanting transplanter. For this reason, the fan-shaped substrate is used to increase the spacing between seedlings. With tape seedlings,
The seedling spacing is kept at about 42 mm.

As the multiple extrusion method, a conventional example shown in FIGS. 8 and 9 is known. With respect to each nursery room 2,2, ... of the nursery box 1 for raising seedlings placed upright, extrusion rods 4,4, ... The number of seedling rooms 2, 2, ... Then, a cam 5 is attached to the rear end of each of the pushing rods 4, 4, ...
The cams 5, 5, ... Are provided so as to be out of phase with each other. Therefore, when the shaft rod 6 rotates, the pushing rods 4, 4, ... That are in contact with the cam 5 reciprocate by the force of the spring 7 and push the seedlings forward from the seedling chamber 2. The reason for this is that the pitch of seedlings in the nursery box for raising seedlings is relatively narrow, as described above, at about 16.5 mm, so that the seedlings are extruded multiple times with a time difference to widen the pitch of seedlings in transplanting work. Is.

[0005]

The seedling pushing device of such a conventional example has the following problems to be solved. In the seedling transfer device of Japanese Utility Model Publication No. Sho 64-45908, which uses the single extrusion method, the conveyor provided on the fan-shaped stem plate has two curved portions. As a result, the conveyor becomes long, the number of sliding contact rods provided on the conveyor becomes large, the apparatus becomes large, and the cost becomes high. The multiple extrusion method has a drawback that it requires one cam for each extrusion rod, resulting in high cost. In addition, since a spring is required for each pushing rod, a lot of energy is required. Moreover, each extruding rod, after pushing the seedlings by the cam, when returning to the original position by the force of the spring, the position of the seedling box for raising seedlings is displaced, if it comes into contact with the partition plate of this seedling box,
Partitions are often damaged. The present invention solves such a problem, and provides a seedling pushing-out device in which the pushing-out interval of seedlings from a seedling room is made wider than the pitch of the seedling room.

[0006]

[Means for Solving the Problems] In order to achieve such an object, the present invention provides a method of extruding seedlings forward by an extruding rod in which a number corresponding to each lateral row of nursery boxes for raising seedlings is juxtaposed. In a seedling extruding device for extruding, the seedling extruding device is characterized in that the extruding rods are alternately installed through a plurality of front and rear supporting members, and the extruding rods alternately advance and retract through a cam. Is.

[0007]

[Function] The seedlings extruded from the lateral row of the nursery boxes for raising seedlings are successively supplied to the seedling corrector at intervals wider than the pitch of the nursery rooms.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic perspective view of an extruder according to the present invention equipped in an automatic seedling feeder, and FIG. 2 is a side view of the extruder. FIG. 3 is a plan view of the same, FIG. 4 is a front view of the same, and FIGS.

In the figure, 10 is a seedling automatic feeder, which comprises a seedling pushing device 11, a seedling straightening device 12, a posture control device 13 and a seedling aligning device 14 of the present invention, to which a seedling winding machine 15 is provided. It is connected.

First, the structure of the seedling pushing device 11 will be described. Reference numeral 20 denotes a main body frame, on which a frame 21 for installing the seedling pushing device 11 is installed. This frame 2
A mounting table 23 having a U-shaped cross section for mounting the seedling raising box 22 for raising seedlings is provided on the front side of 1. The mounting table 23 is composed of side plates 24, 24 at both left and right ends and a bottom plate 25.
A horizontally long window hole 26 is provided at the lower end of the member 5, and is erected substantially vertically. Then, the seedling raising seedling box 22 is placed on the placing table 23, and the pushing rods 29a, 29a, 29b, 29b, which penetrate through the bottom holes 28 of the seedling chamber 27, ...
But in a horizontal row on the upper surface of the frame 21 and in the nursery rooms 27, 2
7 pitches are arranged in parallel with each other.

It is preferable that the extruding rods 29a, 29b, ... Have two types of long and short lengths alternately arranged side by side, the tip end portion has a hemispherical shape, and the main body has a round bar shape. And this pushing rod 29
a, 29b, ... are the support members 30 of the frame 21 on the tip side.
Through the pin 33, and the rear end of the pin is loosely supported by the support 31 or the support 32 depending on the length of the rear end and supported by the pin 33. Further, a total of four push-out rods 29a, 29b located at both ends have their rear ends extended rearward, and are supported by the supporting members 34, 34 in a loose manner.

Links 37 and 38 are attached to both ends of the supports 31 and 32 via shafts 35 and 36, respectively. The one link 37 is longer than the other link 38 and is located outside. Further, the link 37 is the link arm 39, and the link 38 is the link 4
0 and 0 are connected via shaft portions 41 and 42, respectively. The link arm 39 is attached to the arm center shaft 43, and the link arm 40 is attached to the arm outer shaft 44. The arm outer shaft 44 is a hollow shaft, and the arm middle shaft 43 is axially supported inside through a bearing 45. The arm outer shaft 44 is rotatably supported by a bearing 46 provided on the frame 21.

On the other hand, the arm center shaft 43 is provided with a roller arm 50 (right side in FIG. 4), and the arm outer shaft 44 is provided with a roller arm 51 (left side in FIG. 4). The rollers 52 and 53 are attached via the. The roller 52 of the roller arm 51 is
The roller 54 of the roller arm 51 is attached to the cam 54 and the cam 55.
3 are in contact with the cam 56, respectively. Cam 54,
56 is attached to both ends of the upper cam shaft 57, and the cam 55 is attached to the lower cam shaft 58. The upper and lower cam shafts 57, 58 are provided at a predetermined interval on the frame 21 via a bearing unit 59. Is pivoted. The sprocket 6 is attached to the upper and lower cam shafts 57 and 58.
0 and 60 are provided and are linked by a roller chain 61. It should be noted that a gear configuration may be used, and in any case, the cam 5
The configuration is such that the positions of 4, 55 and 56 do not shift. In the figure, 62 is a sprocket provided on the opposite side of the lower cam shaft 58 from the cam 55, and is connected to a sprocket 64 provided on the output shaft of a prime mover 63 such as a motor via a roller chain 65.

The seedling pushing device 11 having such a structure pushes the seedlings N forward from the seedling chambers 27 of the nursery box 22 for raising seedlings, and supplies the seedling N to the seedling correction device 12 in the front. The seedling correction device 12 is for correcting irregular seedlings, and has a number of slide contact bodies 70, 7 corresponding to the lateral row of seedling chambers 27.
A conveyor belt 7 in which 0, ...
A plurality of them are arranged on one. As the sliding contact body 70, for example, an asymmetrical fan-shaped side plate or trapezoidal side plate is erected on both left and right ends of the substrate.

The posture control device 13 is composed of a pair of elastic rollers 72, 72 that rotate the seedling N transferred from the seedling correction device 12 inwardly in the rolling-in direction. The soil attached to the roots of the seedlings is crushed and separated from the seedlings N, and by the next seedling aligning device 14,
N, ... are always supplied in a constant posture.

The seedling aligning device 14 comprises the posture control device 13
, And the bottom plate constitute a rectangular seedling holder 75 having upper and lower surfaces as openings. A chamber is provided in the seedling holder 75 via a plurality of partition plates to receive the seedlings N, N, ... Then, after arranging the seedlings N, N, ... In each room,
The bottom plate of the room (not shown) is opened and the next seedling winding machine 15
Seedling N between the lugs 77, 77 on the conveyor belt 76 of
N, ... Is sequentially supplied.

The seedling take-up machine 15 has a pair of lugs 77, 7 facing each other on a conveyor belt 76, which is driven to rotate in an endless manner, at both longitudinal ends of the conveyor belt 76 at regular intervals.
.. are provided in a plural number, the central portion of the conveyor belt 76 is pulled out from the roller 78, and the conveyor belt 7
A lower tape 79 which is driven integrally with 6 is provided. In addition, an upper tape 81 which is driven integrally with the conveyor belt 76 is arranged, and the lug 7 is sequentially provided at the leading end in the driving direction.
The seedlings N, which are driven by being supported by 7, 77, ... And the lower tape 79, are sandwiched by the upper and lower tapes 79, 81 to form a tape seedling bundle 82. The tape seedling bundle 82 having such a configuration is set in the seedling transplanter to transplant the seedling N into the field.

The seedling pushing device 11 of the present invention operates as follows. In the state of FIG. 2, the prime mover 63 is started. The cam 54 rotates to rotate the roller 52 of the roller arm 50.
Is pushed downward, as shown in FIG.
, a, 29a, ... Move forward, part of the seedlings N in the lateral row of seedling chambers 27 of the seedling raising box 22 are extruded, and the seedlings N are supplied to the seedling correction device 12.

Then, when the cam 56 located on the opposite side of the cam 54 pushes the roller 53 of the roller arm 51 downward, the pushing rods 29b, 29b, ... Move forward as shown in FIG. The remaining seedlings N in the seedling room 27 are extruded and supplied to the seedling correction device 12.

Further, when the cam 55 comes into contact with the roller 52 of the roller arm 50 and is pushed up, the pushing rod 2
Both 9a and 29b retreat. After that, the same work is repeated in sequence.

[0021]

[Effects of the Invention] The seedling extruding device of the present invention having the above configuration is
It has the following effects. The seedlings can be extruded multiple times by the extruding rod of this seedling extruding device. Therefore, the interval between seedlings is the number of times of extrusion times the pitch of the seedling room, and each seedling to be extruded only needs to be moved in a straight line direction, compared to the configuration of the conventional one-time extrusion method. Can be provided easily at low cost. In addition, the number of cams used is smaller than that of the conventional multiple extrusion method, the manufacturing cost is low, and the number of failures is small. For example, in the case where the horizontal row of seedling rooms has 18 times, 18 cams are conventionally required, but in the present invention, 3 cams may be used.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of an automatic seedling feeder including the seedling pushing device of the present invention.

FIG. 2 is a partially cutaway side view of the seedling pushing device of the present invention.

FIG. 3 is a cutaway plan view of the same portion.

FIG. 4 is a cutaway front view of the same portion.

FIG. 5 is an operation explanatory view showing forward movement of one of the pushing rods.

FIG. 6 is an operation explanatory view showing forward movement of the other pushing rod.

FIG. 7 is an operation explanatory view showing the backward movement of both extrusion rods.

FIG. 8 is a plan view for explaining a conventional example.

FIG. 9 is a side view for explaining the same.

[Explanation of symbols]

 22 Seedling box for raising seedlings 27 Seedling room 29a, 29b Extruding rod 30, 31, 32, 34 Supporting device 37, 38, 39 Cam

Claims (1)

[Scope of utility model registration request] 1. A seedling pushing device for pushing seedlings forward by a pushing rod arranged in parallel in a number corresponding to each lateral row of nursery boxes for raising seedlings, wherein the pushing rod is provided with a plurality of front and rear supports. The seedling pushing device is characterized in that the pushing rods are alternately moved forward and backward via cams.