JPH05176609A - Seedling-cutting apparatus for transplantation machine - Google Patents

Abstract

PURPOSE:To synchronize the opening and closing operation timing of plural sets of cutting blades and counter blades by interlocking the cutting blades and the counter blades through a link mechanism and connecting the blades with a cam mechanism having single cam shaft to effect the simultaneous motion of the blades. CONSTITUTION:A cutting apparatus 39 is constructed of a set of a cutting blade 50 and a counter blade 51 under opening and closing motion. Plural sets of the cutting and the counter blades are connected to a cam mechanism having a cam shaft 53 through a link mechanism. The structure of the driving part of the cutting blade can be simplified and compacted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention
The present invention relates to an improvement of a seedling cutting device of a transplanting machine, which conveys a banded seedling by a conveying mechanism, cuts this banded seedling every predetermined number, and attaches it to a field scene with a planting claw of a planting device.

[0002]

BACKGROUND OF THE INVENTION The present inventor has developed a band-shaped seedling formed by squeezing the roots of plant seedlings, such as grass, in a comb shape from both sides with adhesive tape made of paper and winding the tape portion from the outside in a spiral shape. Proposal of a transplanter having a transplanting part which is cut by a predetermined number of planting lines at the end of conveyance of each row and then held by a planting claw that carries out a planting motion and planted in a field scene (Japanese Patent Application No. 3-180340).

In such a transplanter, a transplant portion is mounted on a rear portion of a traveling machine body so as to be able to move up and down, a driver's seat facing the traveling direction of the traveling machine body is provided at the center of the machine body, and a driver sits there. While riding and maneuvering the traveling vehicle, the vehicle travels in a predetermined direction in a field. A seedling box is supported by a seedling box support frame on the upper part of this transplanting section, and a first transport mechanism for holding the strip-shaped seedlings in the seedling box in a lying state and transporting them downward and a strip-shaped seedling transported downwards. A second transport mechanism is provided for transforming the seedlings into a standing shape so that they can be easily scraped by the planting claws and transferring them to the seedling feeding device side, and further by a planting guide provided at the feeding end portion of the seedling feeding cutting device. The seedlings scraped by the planting rod's planting nails are guided to the scene of the field for planting, and generally these transplanters are multi-row planting.

[0004]

Therefore, the seedling cutting device described above cuts the seedlings by closing the facing cutting blades and the receiving blades that receive the cutting blades with one cam mechanism, and after cutting the seedlings. The cam mechanism and the spring separate the receiving blade and the cutting blade. In this case, the cam mechanism moves in such a manner that the drive cam and the drive roller provided on the cam shaft move in contact with the receiving cam, so that the cutting blade and the receiving blade move close to each other or move away from each other. It is supposed to do.

On the other hand, such a seedling cutting device is provided for each row divided by a partition plate in a transplanter for multi-row planting, and each seedling cutting device has a cutting blade and a receiving blade as described above. Since a cam mechanism that opens and closes the blade is provided, it is required to synchronize the timing of these seedling cutting devices, and reduce the number of parts of the drive part such as the cam shaft that drives each cam mechanism. To simplify the structure,
And it is required to make it compact.

As described above, according to the present invention, the timing between the seedling cutting devices for the opening / closing operation of the cutting blades and the receiving blades of the seedling cutting devices in the transplanter for transplanting a plurality of rows is synchronized.
It is an object of the present invention to provide a seedling cutting device for a transplanter that can make the structure of its driving portion simple and compact.

[0007]

A seedling cutting device of a transplanting machine according to the present invention for achieving the above object conveys a band-shaped seedling along an upper surface of a seedling mounting table, and a lower end portion of the seedling mounting table. In a transplanting machine configured to be cut into a predetermined number by a cutting device provided in and to be planted in a field by a planting claw provided at a tip of a planting rod, a set of opening and closing the cutting device is operated. In addition to being composed of a cutting blade and a receiving blade, a plurality of sets of cutting blades and receiving blades are connected so as to interlock with each other via a link mechanism, and these cutting blades and receiving blades form a cam mechanism consisting of one cam shaft. It is configured to connect and operate at the same time.

[0008]

[Operation] By connecting multiple sets of cutting blades and receiving blades via a cam mechanism consisting of one cam shaft and a link mechanism,
The opening / closing timing of each cutting blade and the receiving blade is synchronized.

[0009]

[Examples] Examples of the present invention will be described below with reference to the drawings. Japanese Patent Application No. 3-180340 and Japanese Patent Application No. 3-69034 for parts not shown or lacking description.
No. 3, Jpn. Pat. Appln. No. 3-56680. First, FIG. 1 is a side view showing an overall configuration of a transplanter, in which 1 is a traveling machine, and a rear part thereof is equipped with a multi-row transplanter 2 which is vertically movable and supports a seedling box of the transplanter 2. In the seedling box 4 supported by the frame 9, for example, strip-shaped seedlings in which roots of plant seedlings such as grass are adhered with an adhesive tape are held in a lodging state.

Next, the band-shaped seedlings in the seedling box 4 are conveyed in a laid state by the first conveying mechanism 10 shown in FIGS. 2 and 3,
The band-shaped seedlings carried out from there are transformed into a standing state by the second transport mechanism 30 while the seedling feeding and cutting device is operated.
The first transfer mechanism 10, the second transfer mechanism 30, and the seedling feeding and cutting device 11 are provided for each row between the partition plates 12 that are vertically installed. ing.

A planting guide 13 formed on a curved surface is provided at the feeding end portion of the seedling feeding and cutting device 11, and a planting rod 15 pivotally supported by a drive case 14 is provided. The planting claws 16 are used to plant seedlings in a field scene. On the other hand, in the first transport mechanism 10, an endless seedling transport belt 17 is provided in the lower part between the partition plates 12, and a predetermined gap corresponding to the thickness of the band-shaped seedling is held above the seedling transport belt 17 in the upper part thereof. A seedling pressing conveyor belt 18 is provided, and the seedling pressing conveyor belt 18 is provided so as to be vertically movable up and down as shown by an arrow X in FIG.

Next, in the second transport mechanism 30, two pulleys 31 and 32 are provided vertically parallel to each other with a predetermined gap at the seedling transport start end side, and two seedling transport belts configured as endless belts are provided on these pulleys. As shown in FIG. 4, two pulleys 33a, 34a are erected on the left and right sides of the 33, 34 parallel to each other with a predetermined gap corresponding to the thickness of the band-shaped seedlings. The belts 33 and 34 transform the band-shaped seedlings from the lodging state to the standing state.

Furthermore, on the seedling feeding end side of the second feeding mechanism 30, there is provided a seedling feeding rotary member 37 which is star-shaped and has a sharp tip on one side and an arcuate tip on the other side. The belt-shaped seedlings that are picked up and conveyed by being sandwiched between the seedling conveying belts 33, 34 are seedling support guides 38a, 38b, 38c provided at the upper, middle, and lower stages.
A standing posture is maintained by the root guide 20 and a seedling feeding cutting device 11 including a seedling cutting device 39 for cutting the band-shaped seedlings at a predetermined number of plantings is provided at the delivery end of the root guide 20. There is.

Therefore, in this seedling cutting device 39, as shown in FIGS. 4 and 8, a cutting blade 50 and a receiving blade 51 arranged so as to sandwich the cutting blade 50 in front and back are provided for each planting strip. The support shafts 50A and 51A are fan-rotatably arranged, and two sets of cutting blades 50 and receiving blades 51 are provided as shown in FIGS. 5, 6, 7, 9, and 10. Drive cam provided on one cam shaft 53
The cam mechanism 54 having 55 is configured so as to be simultaneously closed, opened, and interlocked.

In this cam mechanism 54, an opening drive cam 55 and a cutting drive roller 56 are provided around a cam shaft 53 which rotates in the rotation direction R.
And a receiving cam 57 for the opening drive cam 55 and the cutting drive roller 56 are provided on the support shaft 57c.
As shown in FIG. 7, the receiving cam 57 is in contact with the cutting drive roller 56 at the point Z when the cutting blade 50 and the receiving blade 51 are closed. Also,
The portion 57A of the receiving cam 57 is a cam receiving surface that is pressed by the drive roller 56. Further, the portion 57B of the receiving cam 57 is also the cam receiving surface of the drive cam 55, and from this portion, the cutting blade 50 and the receiving blade 51.
It functions as an open cam that returns the open state from the closed state.

Both ends of the receiving cam 57 are provided with the cutting blade 50.
The support shaft 50A of the blade 51 is connected to the support shaft 51A of the receiving blade 51 via the link mechanism including the levers 60A and 60B.
It is designed to work together via a link mechanism consisting of B, whereby two sets of cutting blades 50 and receiving blades 51
The two cam mechanisms 54 are adapted to be opened and closed at the same time.

Further, when the cutting blade 50 and the receiving blade 51 are separated from the closed state to the open state, the cam 55 is actuated and the cutting blade 50 has one end fixed to the frame side as shown in FIG. The cam 55 is biased to return at 65
The contact between the cam and the cam receiving surface 57B is kept in close contact with each other so that no hitting noise is generated. Further, in this embodiment, as shown on the left side of FIG. 8, a stopper rubber 70 is provided at a position facing the blade receiving arm 51B of the blade 51 of the blade 50B fixed to the lower portion of the blade 50. As a result, the drive cam 55 is separated from the open cam indicated by the point Y of the receiving cam 57 in FIG. 7, and the impact when the cutting blade 50 returns by the spring 65 is absorbed by this stopper rubber 70.

As shown on the right side of FIG. 8, a stopper rubber 71 for restricting the operation of the receiving blade 51 after completion of cutting is fixedly provided on the frame side, and the driving roller 56 of FIG. Abutting at the point Z, the cutting blade 50 and the receiving blade 51 are closed,
Band seedling 80 (Fig. 6) Drive cam 55 when there is no load after cutting is completed.
This stopper rubber 71 prevents the cutting blade 50 and the receiving blade 51 from inertially operating prior to the above.
No noise is generated when the 51 operates.

FIG. 5 shows an application example of the present invention.
The cam shaft 53 of the cam mechanism 54 that drives the two sets of the cutting blade 50 and the receiving blade 51 to open and close is combined into three blocks to form one drive chain.
It is rotated at 90, but of course, any number of cam shafts 53 may be rotated together. Further, in this embodiment, two sets of cutting blades 50 are used.
And a receiving blade 51, a cam mechanism 54 consisting of one cam shaft 53,
Link mechanism consisting of levers 60A and 60B and lever 61
Although it is connected via a link mechanism consisting of A and 61B,
The number of sets of the cutting blades 50 and the receiving blades 51 that are simultaneously operated is not limited to two, but may be two or more.

[0020]

The seedling cutting device of the transplanter according to the present invention conveys the band-shaped seedlings along the upper surface of the seedling mounting table and cuts them into a predetermined number by the cutting device provided at the lower end of the seedling mounting table. Then, in a transplanting machine configured to be planted in a field by a planting claw provided at the tip of the planting rod, with a set of a cutting blade and a receiving blade for opening and closing the cutting device,
A plurality of sets of cutting blades and receiving blades are connected so as to interlock with each other via a link mechanism, and these cutting blades and receiving blades are connected to a cam mechanism composed of one cam shaft to operate simultaneously. There is.

Therefore, the timing of the opening / closing operation of the cutting blades and receiving blades of each seedling cutting device in the transplanter for transplanting a plurality of rows is synchronized, and there is an effect that accurate planting can be performed. There is also an advantage that the structure of the drive part of the cutting blade is simple and compact, and the number of failures is reduced accordingly.

[Brief description of drawings]

FIG. 1 is an overall side view of a transplanter according to an embodiment of the present invention.

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

FIG. 3 is a rear perspective view of a belt-shaped seedling transport mechanism.

FIG. 4 is a perspective view showing a main part of a seedling feeding and cutting device.

FIG. 5 is a plan view of a seedling cutting device that interlocks a plurality of cutting blades.

FIG. 6 is a plan view of a seedling cutting device of the transplanter of FIG.

FIG. 7 is a plan view showing a main part of the cam mechanism of FIG.

FIG. 8 is a plan view showing the arrangement of the cutting blades shown in FIG.

FIG. 9 is an explanatory diagram showing an outline of a cam that drives a cutting blade and a link mechanism.

FIG. 10 is an exploded perspective view of a main part of a cam mechanism that drives a cutting blade.

[Explanation of symbols]

 39 Seedling cutting device 50 Cutting blade 51 Receiving blade 53 Cam shaft 54 Cam mechanism 60A, 60B lever 61A, 61B lever.

Claims (1)

[Claims] 1. A band-shaped seedling is transported along the upper surface of a seedling mounting table, cut into a predetermined number by a cutting device provided at the lower end of the seedling mounting table, and provided at the tip of the planting rod. In a transplanter configured to be planted in a field by a planting claw, the cutting device is composed of a set of cutting blades and receiving blades that open and close, and a plurality of sets of cutting blades and receiving blades are provided with a link mechanism. A seedling cutting device for a transplanter, which is configured so as to be operated at the same time by connecting the cutting blades and the receiving blades to a cam mechanism composed of one cam shaft so as to be operated simultaneously.