JPH0634647B2 - Seeding machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a point-seeding machine.

[Prior Art] Automatic seeding can be performed in the center of a block for plant cultivation in which a large number of plants are regularly arranged in a nursery box, or in several other plugs formed at predetermined intervals in a nursery box. There was no seeder.

[Problems to be Solved by the Invention] The present invention has been made in view of the above problems and is arranged above a nursery box to be conveyed by a conveyor, and seeds are seeded at predetermined intervals in the nursery box. It is an object of the present invention to provide a point seeding and seeding machine that can be used.

[Means for Solving Problems] The present invention, as shown in FIG. 1 and FIG.
A seeding machine 4 which is disposed above the seedling raising box 2 conveyed by means of the above, and which seeds the seeds S in the seedling raising box 2 at predetermined intervals by reciprocating horizontally by a predetermined section by a horizontal reciprocating means 4b. Place the seed container 6 on the holder 5
A seed guide cylinder 9 is inserted into a support cylinder 8 attached to the holder 5 via a bracket 7, and a coil spring 10 is interposed between the funnel portion 9 a above the seed guide cylinder 9 and the support cylinder 8. The upper portion of the nozzle holder 12a having the seed adsorption nozzle 12 attached to the lower end is penetrated into the support cylinder 11 attached to the machine frame 4a, and the lateral groove member 13 and the lateral groove member 13 attached to the upper portion of the nozzle holder 12a. Crank 14b with pin 14a engaged in slot
The seed adsorption nozzle 12 is configured to reciprocate vertically in a predetermined section, that is, the nozzle tip reciprocates between the bottom of the seed container 6 and the upper edge 6a of the container by the vertical reciprocating means 14 A hollow portion 12b is formed at the lower end of the tool 12a, a nozzle 12c is attached, an air pipe 15 is connected to the nozzle 12c, and the position of the crank 14b of the vertical reciprocating means 14, that is, the position of the pin 14a is slightly before the lower limit D. When it reaches the point X, the inside of the air pipe 15 becomes a negative pressure, and the seed adsorption nozzle 12 causes the seed S in the seed container 6 to move.
The seed adsorption nozzle 1 when the pin 14a is near the upper limit U.
When the lower end of 2 comes to a position higher than the upper edge 6a of the seed container 6, the seed guide cylinder 9 together with the holder 5 is displaced by the horizontal reciprocating means 4b so as to be located directly below the seed adsorption nozzle 12. Then, the seed suction nozzle 12 further descends and is inserted into the seed guide cylinder 9, and the nozzle holder 12
a contacts the funnel portion 9a, pushes down the seed guide cylinder 9 against the coil spring 10, and the position of the pin 14a is the upper and lower intermediate point Y.
When it comes to, the inside of the air pipe 15 becomes a positive pressure, and the seed S falls and is sown in the plug 3 of the seedling raising box 1.

[Embodiment] The present invention will be described based on FIG. 1 and FIG.

Reference numeral 1 is a conveyor such as a belt conveyor or a roller conveyor. Reference numeral 2 is a seedling raising box placed on the conveyor 1 and conveyed at a predetermined speed, and several plugs 3 for seeding seeds are recessed at predetermined intervals inside.

Reference numeral 4 denotes a seeding machine arranged above the seedling raising box 2, which is provided in a machine frame 4a and horizontally reciprocating means 4b such as an air cylinder as shown in FIG. A seed container 6 placed on a holder 5 that reciprocates only in a predetermined section as indicated by an arrow A, and a seed guide tube 9 inserted into a support tube 8 attached to the holder 5 via a bracket 7.
And are arranged. And the funnel portion 9 above the seed guide cylinder 9
A coil spring 10 is interposed between a and the support tube 8.
Further, an upper portion of a nozzle holder 12a having a seed adsorption nozzle 12 attached to a lower end thereof is inserted into a support cylinder 11 attached to the machine frame 4a, and a lateral groove member 13 attached to the upper portion of the nozzle holder 12a and By the vertical reciprocating means 14 including a crank 14b having a pin 14a engaged with a groove of the lateral groove member 13, the seed adsorption nozzle 12 is vertically moved in a predetermined section as indicated by an arrow B, that is, the nozzle tip is at the bottom of the seed container 6. It is possible to reciprocate between the container and the upper edge 6a of the container. Also,
A hollow portion 12b is formed at the lower end of the nozzle holder 12a, a nozzle 12c is attached, an air pipe 15 is connected to the nozzle 12c, and the other end is connected to a vacuum pump 17 via an electromagnetic three-way valve 16.

Then, the seeding machine 4 detects the position of the tip of the nursery box 2 by the sensor 18
After determining the position of the holder 5, the following seeder operation is performed based on the instruction of the microcomputer.

[Operation] When the position of the crank 14b of the vertical reciprocating means 14, that is, the position of the pin 14a reaches a point X slightly before the lower limit D, the electromagnetic three-way valve 16 is actuated to cause a negative pressure in the air pipe 15 and the seed adsorption nozzle 12 Adsorbs the seed S in the seed container 6.

When the crank 14b rotates clockwise about 180 degrees in FIG. 1 and the pin 14a reaches the vicinity of the upper limit U, the lower end of the sucker suction nozzle 12 reaches a position higher than the upper edge of the seed container 6.

The operation of the horizontal reciprocating means 4b causes the machine frame 4a in FIG.
Is displaced to the left, and the seed guide cylinder 9 moves directly below the raised seed suction nozzle 12. At this time, the pin 14a is at a position slightly above the upper limit U.

When the crank 14b rotates and the pin 14a passes through the intermediate point Y and reaches the vicinity of the lower limit D, as shown by a phantom line in FIG.
The nozzle holder 12a comes into contact with the funnel portion 9a and moves against the coil spring 10 to push down the seed guide cylinder 9. During this process, when the pin 14a reaches the intermediate point Y, the electromagnetic three-way valve 1
By the operation of 6, the inside of the air pipe 15 becomes a positive pressure and the seed S
Is dropped and the seed guide tube 9 is at the lowest position, the seedlings 1
Seeded in the plug 3.

When the pin 14a passes the lower limit D and reaches the vicinity of the upper limit U, the seed container 6 and the seed guide cylinder 9 are displaced to the position shown by the solid line in FIG. 1 by the action of the horizontal reciprocating means 4b.

With the rotation of the crank 14b, the position of the pin 14a again reaches the point X slightly before the lower limit D in the seed container 6.

The above steps are repeated and seeds are automatically seeded in each plug 3.

[Effects of the Invention] According to the present invention, as shown by the phantom line in FIG. 1, the seed guide cylinder 9 descends at the time of sowing, so that the seeding can be automatically and accurately carried out at a predetermined interval in the seedling raising box. Therefore, it is possible to perform automatic seeding at the center of the plugs or the blocks for plant cultivation that are regularly arranged in large numbers in the nursery box.

[Brief description of drawings]

FIG. 1 is an explanatory view of a main part of a point sowing machine according to the present invention, in which a tentative line of a support cylinder and a seed guide cylinder shows a state at the time of sowing. FIG. 2 is a plan view of the above. 1 ... Conveyor 2 ... Nursery box 3 ... Plug 4 ... Seeding machine 4a ... Machine frame 4b ... Horizontal reciprocating means 5 ... Holder 6 ... Seed container 6a ... Container upper edge 7 ... Bracket 8 …… Support cylinder 9 …… Seed guide cylinder 9a …… Funnel part 10 …… Coil spring 11 …… Support cylinder 12 …… Seed adsorption nozzle 12a …… Nozzle holder 12b …… Hollow part 12c …… Nozzle 13 …… Horizontal groove Member 14 ... Vertical movement reciprocating means 14a ... Pin 14b ... Crank 15 ... Air pipe 16 ... Electromagnetic three-way valve 17 ... Vacuum pump 18 ... Sensor A, B ... Arrow D ... Lower limit S ... Seed U …… Upper limit Y …… Middle point

Claims (1)

[Claims] 1. A seeding machine, which is arranged above a seedling raising box conveyed by a conveyor and which seeds seeds in the seedling raising box at predetermined intervals in a horizontal direction by horizontal reciprocating means (4b). The seed container (6) is placed on the reciprocating holder (5), and the seed guide tube (9) is inserted into the support tube (8) attached to the holder (5) via the bracket (7). At the lower end of the support cylinder (11) mounted on the machine frame (4a) with the coil spring 10 interposed between the funnel portion (9a) above the seed guide cylinder (9) and the support cylinder (8). Nozzle holder (12) equipped with a seed adsorption nozzle (12)
a) a horizontal groove member (13) mounted on the upper part of the nozzle holder (12a) and a crank (14b) engaging a pin (14a) in a groove hole of the horizontal groove member (13); The seed reciprocating device (14) reciprocates the seed adsorption nozzle (12) in a vertical direction between a bottom portion of the seed container (6) and an upper edge (6a) of the container. The nozzle holder (12a) has a hollow portion (12b) formed at the lower end and the nozzle (1
2c) and attach the air pipe (1) to the nozzle (12c).
5) is connected, and when the position of the crank (14b) of the vertical reciprocating means (14), that is, the position of the pin (14a) comes to a point (X) slightly before the lower limit (D), the air pipe (1
5) The inside of the seed adsorption nozzle (12) adsorbs the seed (S) in the seed container (6) due to negative pressure, and the pin (14a) is near the upper limit (U) and the lower end of the seed adsorption nozzle (12). When the seed container (6) is at a position higher than the upper edge (6a) of the seed container (6), the horizontal guide means (4b) displaces the holder (5) together with the seed guide tube (9) and the seed adsorption nozzle ( 12)
The seed adsorption nozzle (1
2) descends and is inserted into the seed guide cylinder (9), the nozzle holder (12a) contacts the funnel portion (9a), and the seed guide cylinder (9) is moved against the coil spring (10). Push down,
When the position of the pin (14a) reaches the upper and lower intermediate points (Y), the pressure in the air pipe (15) becomes positive and the seed (S) falls and is sown in the plug (3) of the nursery box (1). The point seeding machine configured as described above.