JPS6361883B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a blower having an air intake port connected to a paddy storage recess formed on the circumferential surface of a roll, extending from a paddy supply part to a position immediately before a paddy discharge part of the recess,
The suction action ensures that the paddy is stored in the recess and the paddy is held during roll rotation, and a brush is provided that acts to remove excess paddy from the recess from the paddy supply section; This invention relates to a sowing machine that can appropriately sow a set amount of paddy.

Conventionally, in the above-mentioned seeding machine, even the rice properly stored in the recessed part may be removed due to the surplus rice removing action of the brush of the rice seeding machine which adsorbs the rice. Due to the adsorption action, the paddy is adsorbed and held in the recess in an upright position, and in this state, the paddy may fall out of the recess due to the removal action of the brush. There was a problem that caused this.

In view of the above-mentioned circumstances, an object of the present invention is to solve the above-mentioned problems at once by rationally improving the paddy adsorption structure.

A characteristic configuration of the present invention is that, in the above-mentioned seeding machine, the blower is connected to the recess so that the paddy suction force when the brush acts is greater than the paddy suction force in the paddy supply section. There is a certain thing, and its action and effect are as follows.

In other words, as a result of research on paddy adsorption,
In the conventional configuration, the paddy is attracted with a uniform suction force from the paddy supply section to just before the paddy discharge section, so if the suction force is large, removal of stored paddy by the brush can be avoided, but in the paddy supply section Due to the large suction force, the paddy is adsorbed and held in the recess in an upright position.Also, if the suction force is weak, storing the paddy in the upright position in the paddy supply section can be avoided, but the suction force against the stored paddy is It was discovered that the brushes were so weak that even properly stored paddy was removed by the brushes.

Therefore, focusing on the above research results, by connecting the blower to the recess so that the paddy suction force during the action of the brush is greater than the paddy suction force at the paddy supply section, It is possible to prevent paddy from being stored in the recess in an upright position due to excessive paddy suction force, and the paddy can be reliably stored in the recess in an extreme position that will not be removed by the brush.
In addition, the brush action part can strongly adsorb and hold properly stored paddy, and can reliably prevent stored paddy from being removed by the removal action of the brush. We were able to perform good sowing with a small amount of seeds.

Next, embodiments of the present invention will be described in detail based on illustrative drawings.

As shown in FIGS. 1 to 3, a seeding roll 4 having a large number of paddy storage recesses 3 formed on its circumferential surface is provided below a paddy supply hopper 2 equipped with a paddy feeding device 1. A helical brush 6 is provided at the upper part of the rotary upper means to act in rotational contact with the circumferential surface of the upper rotating means to laterally feed and discharge the excessively accumulated paddy on the seeding roll 4, and is provided in rotating contact with the circumferential surface on the lower side of the rotation. A brush 6 is provided which acts to prevent surplus rice other than that stored in the recess 3 from being sent as the sowing roll 4 rotates, and furthermore, both brushes 5,
From the paddy supply section A formed between 6 to the sowing roll 4
A blower 7 is provided to apply a suction force for adsorbing stored paddy to all of the rotating recesses 3 over the range up to the pre-loading position of the paddy discharge section B located at the lower end of the
As the seeding roll 4 rotates, the paddy supply section A rotates and transfers the paddy stored in the recess 3 while holding it by suction.
In the paddy discharge section B, a seeding machine is configured to sequentially drop and supply stored paddy to seedling growing boxes 9 which are sequentially conveyed by a conveyor 8 below the rolls 4.

To configure the seeding roll 4, a large number of pin-shaped protrusions 10 are arranged in the circumferential direction of the roll 4 between each row of the recesses 3 arranged in vertical rows on the circumferential surface of the roll 4. Due to the contact action of these protrusions 10 on the accumulated paddy as the roll 4 rotates, the posture of the paddy is sized so that its longitudinal direction faces the rotation direction of the roll 4, and the longitudinal direction is oriented in the rotation direction of the roll 4. The structure is such that the paddy can be stored smoothly and efficiently in the recess 3 formed to match the .

To configure the air intake structure for the paddy storing recess 3, an air intake having a length extending almost the entire width of the roll 4 is provided near the outer periphery of the roll 4 in a manner that corresponds to each row of the recess 3 in the direction of the roll rotation axis. The air passages 11 are bored with one end thereof open on one end surface of the roll 4, and the air intake passages 11 and the recesses 3 in the horizontal rows corresponding to the air intake passages 11 are connected to each other by small holes 12 opening at the bottom of the recesses 3. They are connected to each other.

Then, the fixing block 13 is placed in surface contact with the end face of the roll on the side of the opening 11a of the intake passage 11 in a substantially air-tight manner and in a manner that allows rotation of the roll 4 through relative sliding contact. An intake distribution passage 14 having a semicircular opening that communicates only with the intake passage 11 is formed, and as shown in FIG. The connection port 16 is arranged and formed so as to face the air intake path 11 located in the vicinity of the action position of the brush for removing excess paddy among the air intake paths 11 within the suction action range, and
Each intake path 11 and distribution path 1 as the roll 4 rotates
4, the concave portion 3 located within the suction action range is connected to the blower 7, and the suction connection port 16 is positioned corresponding to the action position of the brush 6 for removing excess paddy, thereby increasing the paddy supply. The structure is such that the paddy suction force at the action position of the brush 6 is greater than the paddy suction force at the portion A. In other words,
In the paddy supply section A, the paddy is prevented from being stored and held in the recess 3 in an upright position due to excessive suction, and the paddy is stored in an appropriate inverted position without being removed by the brush 6. At the operating position 6, the stored paddy is reliably adsorbed and held in the recess 3 with a large suction force, and the stored paddy is not removed by the action of the brush 6, thereby eliminating the problem of stock shortage. It is configured to do so.

In addition, so that the paddy suction force at the time of action of the brush 6 is larger than the paddy suction force in the paddy supply section A,
To connect the blower 7, instead of forming an opening with its suction connection port 16 positioned corresponding to the operating position of the brush 6 as described above, as shown in FIG. The air intake path 11 and the connection distribution path 14 to the roll side air intake path 11 located at the operating position of the brush 6 are connected to two separate distribution paths 1.
4b, 14a, and the distribution paths 14a, 1
4b and the blower 7, respectively, by adjusting the throttle valves 17a and 17b interposed in the pipes connecting them separately, or by adjusting the suction force at both positions appropriately. Various improvements can be made to the specific connection structure, such as configuring the suction to the paddy supply section A to have a throttling effect depending on the shape of the air intake system.

The present invention is directed to various types of seeding machines, such as a stationary type for seedling boxes and a mobile type for direct sowing.

[Brief explanation of drawings]

The drawings show an embodiment of the seeding machine according to the present invention, in which Fig. 1 is an overall vertical cross-sectional view, Fig. 2 is a plan view, Fig. 3 is an exploded perspective view showing the intake structure, and Fig. 4 shows the intake position and roll. A schematic diagram showing the relationship with the rotational phase, and FIG. 5 is a schematic diagram showing another embodiment. 3... Concavity, 4... Roll, 6... Brush, 7
...Blower, A...Paddy supply section, B...Paddy discharge section.

Claims (1)

[Claims] 1. A blower 7 is provided in the paddy storage recess 3 formed on the circumferential surface of the roll 4, and the air intake port is connected to the recess 3 from the paddy supply section A to the position just before the paddy discharge section B. This seeding machine is equipped with a brush 6 that acts on the recess 3 of the paddy to remove excess paddy, and the blower 7 is applied to the recess 3 with the force of the brush 6 being greater than the paddy suction force in the paddy supply section A. A seeding machine that is connected so that it has a large paddy suction force when it is in operation.