JPH0479604B2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a planting device used in a seedling transplanter, which has a high precision and always plants seedlings well, and a planting rod with a high waterproof effect. This makes it possible to provide products at low prices.

(Prior art) The planting rod 1 of the seedling transplanter is manufactured by Utility Model 54-80933.
As seen in Japanese Unexamined Patent Publication No. 56-5418, an extrusion operating rod 13 for operating the extrusion rod 6 is housed in the chamber 2. Here, by the action of a cam 11 fixed to a crank-shaped shaft 8, this extrusion operating rod 13 swings like a see-saw around a horizontal axis 14 in the intermediate portion while the planting rod 1 is moving up and down. The pusher 7 at the lower end of the pusher rod 6 is moved up and down, and conventionally,
This horizontal shaft 14 was inserted into a round hole of the planting rod 1 and supported.

(Problem to be solved by the invention) Since this round hole exits from chamber 2 to the outside, it is necessary to drill a hole in the side wall during production, and it is necessary to prevent water from entering chamber 2 through this round hole. To prevent this, seals and lids are required, making them expensive.

In addition, there was play between the shaft and the hole, and the amount of movement of the pusher 7 varied depending on the rotational speed of the shaft 8, leading to the possibility that the planting depth of the seedlings would become unstable.

(Means for Solving the Problems) In order to solve the above problems, the present invention provides that a planting rod 1 having a scraping claw 5 at the tip is provided with a chamber 2 opened upward, and The upper part of the extrusion rod 6 that reciprocates the extruder 7 at the lower end near the scraping claw 5 is located on the tip side of the chamber 2, and the cam 11 that rotates integrally with the shaft 8 is provided on the base side. A pair of U-shaped receiving portions 12, 12 with open tops are provided on the left and right side wall surfaces of the housing, and are integrally formed with the side walls. is put into the receiving parts 12, 12, and this extrusion operating rod 13
A spring 16 whose base side contacts the cam 11 and whose tip side is connected to the upper part of the push rod 6, whose chamber 2 is covered with a cover 15 fixed above and whose upper end is received on the inner surface of this cover 15. is attached in such a direction that its lower end engages with the extrusion operating rod 13 on the distal side of the horizontal shaft 14 to push down the extrusion rod 6, and presses both ends of the horizontal shaft 14 against the bottom sides of the U-shaped receivers 12, 12. This is a planting device for a seedling transplanter, which is characterized in that it is provided so as to force the seedlings to move.

(Operation and Effect) According to the present invention, both ends of the horizontal shaft 14 protruding left and right from the middle part of the extrusion operating rod 13 are pressed against the bottom sides of the U-shaped receiving parts 12, 12 by the spring 16 that pushes down the extrusion rod 6. Since it is provided so as to be biased in the direction, there is no play between the horizontal shaft 14 and the receiving parts 12, 12, so that the extrusion operating rod 13 can operate properly, and the seedlings can be transplanted properly. Even if the horizontal shaft 14 and the receiving parts 12, 12 wear out to some extent, the springs 16 can eliminate the play caused by the wear, allowing for long-term use and excellent durability.

Further, since the planting rod 1 does not have a hole penetrating the outer wall for supporting the horizontal shaft 14, water does not enter the chamber 2 through this hole. Furthermore, this horizontal axis 14
Since the receiving parts 12, 12 are integrally provided on the inner surfaces of both side walls of the chamber 2 in a U-shape with an open top, there is no need for seals or covers, and it can be provided at a low cost.

(Example) Next, an example of the present invention will be described based on the drawings. 1 is a planting rod, which has a groove-shaped chamber 2 whose top is open from the middle part to the tip, and whose base part swings. It is rotatably attached to the tip of the moving rod 3 with a pin 4,
A downward scraping claw 5 is fixed to the tip.

Reference numeral 6 denotes an extrusion rod, which is slidably provided at the tip of the planting rod 1 so that the extruder 7 at the lower end thereof can move up and down along the scraping claw 5. Reference numeral 8 denotes a crank-shaped shaft, which is inserted into the middle part of the planting rod 1 and is swung by a drive shaft 10 that is supported and driven by a body 9, and a cam 11 is fixed in the chamber 2. ing. In addition, on the inner wall of the chamber 2 of the planting rod 1,
A pair of U-shaped receiving parts 12, 12 with open tops are directly provided on the left and right to face each other, and both ends of a horizontal shaft 14, which is integrally provided in the middle part of the extrusion operating rod 13, are supported. The tip and base ends of the operating rod 13 are engaged with the push rod 6 and the cam 11, respectively, and a cover 15 is fixed onto the chamber 2, and the lower end of a spring 16 fixed to the inner surface of the cover 15 The tip side of the extrusion operating rod 13 is pressed more than the horizontal axis 14,
Both ends of the horizontal shaft 14 are pressed against the bottoms of the U-shaped receivers 12, 12.

In addition, in the figure, 17 is a seedling stand, 18 is a float,
19 indicates a rotation axis.

The planting device in this seedling transplanter is configured as described above, so when the drive shaft 10 rotates, the planting rod 1 is swung around by the shaft 8;
A swinging rod 3 whose base is pivoted to the fuselage 9 with a rotation shaft 19
The scraping pawl 5 at the tip performs a deformed elliptical movement because it swings around the rotation shaft 19. Then, as the shaft 8 rotates, the cam 11 rotates with respect to the planting rod 1 and moves the base of the extrusion operating rod 13 up and down, so its tip moves up and down in the opposite direction around the horizontal axis 14 to move the extrusion rod 6. When raised and lowered, the extruder 7 is at its upper limit when the scraping claw 5 is at the top, and in this state it protrudes onto the seedling stand 17 to scrape off one seedling and hold it between the two. When it descends and reaches the lower limit in the soil, the pusher 7 further descends to push the seedling downward and into the soil, and while rising, the pusher 7 returns to its original position relative to the scraping claw 5. do.

Here, the horizontal axis 14 of the extrusion operating rod 13 that operates the extruder 7 and the extrusion rod 6 is connected to the U-shaped receiving portion 1 provided on the inner wall of the groove-shaped chamber 2 of the planting rod 1.
2 and 12, and this horizontal shaft 14 is not exposed at all outside the outer wall of the planting rod 1, so water does not infiltrate into the chamber 2 from the supporting portion of this horizontal shaft 14. There's nothing to do. Also, this receiving part 1
2 and 12 are directly provided on the side walls of the chamber 2 in a U-shape that is open at the top, so when forming the chamber 2, they can be cast out by die-casting, making it extremely easy to manufacture without requiring any machining. Along with being
Since waterproofing measures such as seals and lids are not required,
It can be provided at an extremely low price.

Furthermore, since the horizontal shaft 14 located in the middle of the extrusion operating rod 13 is always pressed against the bottom of the U-shaped receivers 12, 12 by the spring 16 that pushes down the extruder rod 6, the receiver and the horizontal shaft No play occurs between 14. Therefore, since the amount of movement of the extruder 7 does not change, stable planting performance is always exhibited.

[Brief explanation of the drawing]

Fig. 1 is a side view of a part of the seedling transplanter according to the present invention, Fig. 2 is an enlarged cutaway side view of the part, Fig. 3 is a cutaway plan view thereof, and Fig. 4 is a cutaway front view thereof. It is. The symbols in the figure are as follows. 1... Planting rod, 2... Room, 3... Swinging rod, 5...
...Scraping claw, 6...Extrusion rod, 7...Extruder, 8...
Shaft, 11...Cam, 12...Receptacle, 13...Extrusion operating rod, 14...Horizontal shaft, 15...Cover, 16...
...Spring.

Claims (1)

[Claims] 1 A planting rod 1 having a scraping claw 5 at the tip is provided with a chamber 2 opened upward, and on the tip side of the chamber 2, a pusher 7 at the lower end is reciprocated near the scraping claw 5. A cam 11 that rotates integrally with the shaft 8 is provided on the base side where the upper part of the extrusion rod 6 is located, and a pair of U-shaped receiving portions 12, 12 that are open at the top are provided on the left and right side walls of the chamber 2.
are provided integrally with the side wall facing each other, and the extrusion operating rod 1
Both ends of the horizontal shaft 14 protruding left and right from the middle part of the extrusion rod 13 are put into the receiving parts 12, 12, and the base side of the extrusion operating rod 13 contacts the cam 11, and the tip side is connected to the upper part of the extrusion rod 6. The chamber 2 is covered with a cover 15 fixed above, and the upper end of the spring 16 is received on the inner surface of the cover 15, and the lower end of the spring 16 engages with the extrusion operating rod 13 at the tip side of the horizontal shaft 14. Planting in a seedling planting machine characterized by being provided so as to push down the extrusion rod 6 and to bias both ends of the horizontal shaft 14 in a direction to press against the bottom side of the U-shaped receiving parts 12, 12. Installed.