JPH08154429A - Supplying roll for seeding device - Google Patents

Abstract

PURPOSE: To provide a supplying roll for a seeding device, comprising a simple structure, reduced in cost, capable of readily changing a seeding rate. CONSTITUTION: In a seeding device in which a supplying roll 6 is supported on a shaft below a hopper 4, seed engaging grooves are set on the outer peripheral face of the supplying roll 6 and seeds are supplied by revolving the supplying roll, the supplying roll 6 is equipped with the seed engaging grooves in depth equal to length of one seed in the direction of the shaft center of the roll on the outer peripheral face of the roll and raking out step parts 20c having diameters smaller than those of circles connecting the bottoms of the seed engaging grooves at one side of the seed engaging grooves in an integrated way to form ring-shaped roll pieces and piling the roll pieces and fixing both the sides by side plates 22. Plural engaging projections are arranged on one side of the roll piece 20 and plural engaging holes are laid on the other side. The adjoining engaging projection and engaging hole are meshed to determine positioning and the phases of the seed engaging grooves of the roll pieces are shifted so that a seeding rate can be adjusted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for simply constructing a feeding roll of a seeding device.

[0002]

2. Description of the Related Art Conventionally, a seeding device is arranged on a conveyor, the seeding device has a cylindrical feeding roll arranged at the lower part of a hopper, and a groove for inserting seeds is provided on the surface of the feeding roll. A technique is known in which the seeds are evenly sown by rotating the seedlings in accordance with the transportation of the seedling boxes. The technology for manufacturing this feeding roll is to cut a cylindrical resin roll to a set width, and to form a groove on the roll surface by cutting with a metal saw at a constant width parallel to the axis to form a seed insertion groove, The raking step portion was formed by forming a groove by cutting the seed fitting groove in a direction perpendicular to the groove. For example, JP-A-63-2915
09 technology.

[0003]

As described above, with the structure in which the grooves are formed by cutting, it takes time to process each groove one by one, and when burr occurs, deburring is also required. , The manufacturing was troublesome and the cost was high. Also, the width of the seedling box to be sown is changed,
When changing the seeding amount in one row, it was necessary to integrally replace the seeding rolls.

[0004]

To solve the above problems, the following means are used. That is, the feeding roll is axially supported on the lower part of the hopper, the seed fitting groove is provided on the outer peripheral surface of the feeding roll, and in the seeding device for feeding seeds by rotating the feeding roll, the roll has a thickness of one seed. The seed insertion groove provided on the outer peripheral surface in the axial direction of the roll, and the scraping step portion having a diameter smaller than the diameter of the circle connecting the bottom of the seed insertion groove to one side surface of the seed insertion groove. The ring-shaped roll pieces provided in 1. are stacked and fixed on both sides by side plates. In addition, a plurality of fitting protrusions are arranged on one side of the roll piece and a plurality of fitting holes are arranged on the other side, respectively, and adjacent fitting projections and fitting holes are fitted and positioned, and the roll pieces are arranged in rows. The assembly is rotated by a desired angle and the seeding amount can be adjusted.

[0005]

By using such means, when assembling the feeding roll, the fitting projections and the fitting holes of the adjacent roll pieces are fitted to each other, and a plurality of them are stacked in a cylindrical shape according to the width of the seedling box. Then, the feeding roll can be formed by pressing and fixing both sides with the side plates. When each roll piece is rotated by a certain angle, the position of the seed fitting groove is changed for each roll piece, and the seeding amount can be adjusted. Then, the feeding roll is laid horizontally on the lower part of the hopper, and when the feeding roll is rotated, the seed is fitted into the seed fitting groove and is conveyed downward with the rotation, and the seed is dropped at the lower end and falls on the seedling box. . The seeds still in the fitting groove are forcibly discharged by the scraping plate inserted in the scraping step portion.

[0006]

The problems and configurations to be solved by the present invention are as described above, and one embodiment of the present invention shown in the accompanying drawings will be described below. 1 is a front sectional view of a seeding device, FIG. 2 is a front view of a feeding roll, FIG. 3 is a side sectional view of the same, FIG. 4 is an enlarged partial front view of a roll piece of the feeding roll, and FIG. 5 is X- in FIG. FIG.

The overall structure of the seeding device will be described with reference to FIG. The seeding device A is placed on the conveyor 1, and the seedling box 2 is conveyed on the conveyor 1 below the seeding device A to the left in the drawing. The seeding device A has a hopper 4 formed on the upper part between the side plates 3 and 3, and the hopper 4 is formed on the lower plates 4a and 4a.
The b is arranged in a funnel shape so as to be inclined so that the lower central part is lowered, and the central lower part is opened to form a supply port 5, and the size of the supply port 5 can be changed depending on the kind of seeds and the like.

A feeding roll 6 of the present invention is arranged below the hopper 4, the feeding roll 6 is fixed to a feeding shaft 7, and the feeding shaft 7 is rotatably supported by the side plates 3 and 3. One end of the feeding shaft 7 is interlocked with a motor via a power transmission mechanism (not shown), and is rotationally driven in accordance with the conveying speed of the conveyor 1 and the seeding amount. Then, a scraper 9 is projected at the lower end of the lower plate 4a so that the position thereof can be adjusted, and the tip of the scraper 9 is arranged close to the outer peripheral surface of the feeding roll 6 to prevent seeds from leaking.

The scraper 9 on the upper part of the feeding roll 6
The brush 10 is arranged on the upper side, and the rotating brush 11 is arranged above the brush 10, and the tips are arranged so as to be in contact with the outer peripheral surface of the feeding roll 6, and the brush 10 is a seed fitting groove 20a formed on the outer peripheral surface of the feeding roll 6 described later. Excessive seeds that have not entered are swept out, and the rotating brush 11 has a function of leveling and producing paddy with awns.

The guide plate 12 is provided on the side surface (right side of the drawing) extending from the upper part to the lower part in the forward direction of rotation of the feeding roll 6.
Are arranged in close contact with the outer peripheral surface of the pay-out roll 6 so that the seed that has entered the seed insertion groove 20a does not fall when being conveyed downward by the rotation of the pay-out roll 6. A soft member such as a sponge is attached to the inner surface of the guide plate 12, that is, the surface in contact with the feeding roll 6, so that the feeding roll 6 can be easily rotated and the seeds are not damaged. Further, scraping plates 13, 13, ... Are arranged in parallel from the lower end of the pay-out roll 6 to the rotation advancing direction side (lower left side) in accordance with the scraping step portion 20c formed on the surface of the pay-out roll 6, The tip of the scraping plate 13 is inserted into the scraping step portion 20c so that the seed fitted in the seed fitting groove 20a is forcibly scraped out.

Then, the pay-out roll 6 which is an essential part of the present invention.
As shown in FIG. 2 and FIG. 3, the configuration of the roll piece 20 is a ring-shaped roll piece 20 in which a tubular body is cut into a ring shape.
The ring-shaped end pieces 21 and 21 arranged on both sides when they are stacked in the lateral direction, the disk-shaped side plate 22 for pressing the end pieces 21 and 21, the roll piece 20, the end piece 21 and the side plate 22.
It is composed of a fixing bolt 23 for fixing the. The roll piece 20 is integrally formed of synthetic resin by injection molding or the like,
As shown in FIGS. 4 and 5, seed fitting grooves 20a, 20a, ... Are provided parallel to the shaft center at regular intervals on the outer periphery, and the front side of rotation of the seed fitting groove 20a is a corner. The part is scraped to form an inclined surface 20b. This seed fitting groove 20a
The seeds are inserted into the rolls, and the size of the seeds is set to be large enough to fit the seeds in the horizontal direction. The width of the roll piece 20 is substantially the same as the width of the single seed in the horizontal direction.

On one side surface of the roll piece 20, a scraping step portion 20 is cut out in a ring shape deeper than the seed fitting groove 20a (smaller than the radial length where the bottom of the seed fitting groove is located).
c is formed in a direction perpendicular to the seed fitting groove 20a (axial direction), the tip of the raking plate 13 is inserted into the raking step portion 20c, and at the lower end, raking is performed for each width of one seed. Board 13
Is arranged. Therefore, the inserted seeds are forcibly scraped out from the seed insertion groove 20a. Further, a fitting projection 20d is provided on one side surface of the roll piece 20 on the center side, and a fitting hole 20e is provided on the other side surface in alignment with the fitting projection 20d. And fitting hole 20e
And are fitted so that they can be positioned and fitted and fixed.

Further, as shown in FIG. 4, the bolt hole 20 is located at a position displaced laterally from the fitting projection 20d of the roll piece 20.
f is opened. Then, the scraping step portion 21a, the fitting hole 21b, and the bolt hole 21c are also formed by aligning the position with the end piece 21, and the side plate 22 has the bolt holes 20f and 21f.
The bolt holes 22a are opened by aligning with c, the side surfaces of the roll pieces 20, 20, ... Are fitted together, and the end pieces 21, 21 and the side plates 22, 22 are fitted on both sides thereof to form the bolt holes. 20f ・ 20f ・ ・ ・ 21c ・ 22a fixing bolt 23
Is inserted and fixed with a nut to form a pay-out roll 6.
In addition, the fitting protrusion 20d, the fitting hole 20e, and the bolt hole 20
A plurality of f · 20f are arranged concentrically so that the holes are aligned even if they are shifted by a predetermined angle, and the roll piece 20 is rotated and fixed in a phase-shifted manner. The position of 20a ... in the axial direction (row) is shifted for each roll piece 20, 20 so that the seeding amount can be adjusted.

[0014]

Since the present invention is configured as described above, it has the following effects. That is, since the roll piece is configured as in claim 1, the seed fitting groove and the scraping step portion can be simultaneously molded by injection molding of the synthetic resin for the roll piece, which enables mass production at low cost, and simplifies the manufacturing process. It has become possible to reduce the manufacturing cost. Further, the width of the feeding roll can be easily adjusted by increasing or decreasing the number of roll pieces.

Since the roll piece is simply positioned by fitting the fitting protrusion and the fitting hole, the assembly is simplified and the phase of the fitting position is changed. By doing so, the seeding amount for one row can be adjusted, and the seeding can be easily adjusted without preparing another feeding roll.

[Brief description of drawings]

FIG. 1 is a front sectional view of a seeding device.

FIG. 2 is a front view of a payout roll.

FIG. 3 is a side sectional view of the same.

FIG. 4 is an enlarged partial front view of a roll piece of a payout roll.

5 is a sectional view taken along the line XX in FIG.

[Explanation of symbols]

 A seeding device 6 feeding roll 20 roll piece 20a seed fitting groove 20c raking step portion 20d fitting protrusion 20e fitting hole

Claims (2)

[Claims] 1. A feeding roll is rotatably supported at a lower portion of the hopper,
In the seeding device, in which a seed fitting groove is provided on the outer peripheral surface of the feeding roll and the seed is fed by rotating the feeding roll, the roll has a thickness corresponding to one seed, and the outer peripheral surface has the axial direction of the roll. , And a ring-shaped roll piece integrally provided with a seed insertion groove provided on the one side and a scraping step portion having a diameter smaller than a diameter of a circle connecting the bottoms of the seed insertion grooves on one side surface of the seed insertion groove. The feeding roll of the seeding device, wherein the feeding roll is fixed to the side plate. 2. The feeding roll according to claim 1, wherein a plurality of fitting protrusions are arranged on one side surface of the roll piece and a plurality of fitting holes are arranged on the other side surface thereof, and adjacent fitting projections and fitting holes are fitted together. The feeding roll of the seeding device is characterized in that the seeding amount can be adjusted by shifting the phase of the seed fitting groove of each roll piece while positioning the seedling.