JPH055551B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention swings and drives a swinging sorting plate tilted back and forth as well as left and right, and sorts grains to be sorted on the sorting plate at the lower end of the front and back flow, and brown rice on the left and right inclined upper end side.
The present invention also relates to an automatic sorting device for a swing sorter that concentrates rice grains on the lower end side and separates and takes out the rice grains.

Conventionally, a switch for detecting the presence of grains and a switch for detecting the absence of grains are provided, and each switch is used to maintain the size of the blank space formed at the corner of the sorting plate within a predetermined range. A technique has been developed to operate the angle adjustment member of the sorting plate.

However, in the prior art, each of the switches is attached to the maximum blank area and the minimum blank area, and the angle is adjusted by turning each switch on and off, so the detection error of each switch is added. In addition to causing errors in angle adjustment, there were also functional problems such as erroneous angle adjustment if any one of the switches broke down.

However, the present invention includes a grain sensor that detects the boundary between grains to be sorted on the upper surface of the oscillating sorting plate and the exposed part of the plate surface based on a difference in reflected light, and an angle adjustment member for the oscillating sorting plate, The grain sensor is characterized in that the angle adjustment member is operated so that the grain sensor detects the boundary between the paddy layer and the exposed portion of the plate surface on the supply side of the swing sorting plate.

Therefore, since the angle is adjusted so that the boundary part is detected by the grain sensor, errors in angle adjustment can be easily reduced compared to the conventional technology in which a plurality of switches are provided, and angle adjustment due to malfunction can be easily reduced. The malfunction occurrence rate can be easily reduced, and since the grain sensor detects the boundary between the paddy layer and the exposed plate surface where the difference in the amount of reflected light is extremely large, the sensitivity setting of the grain sensor, etc. This makes it easy to simplify and improve the precision of angle adjustment.

An embodiment of the present invention will be described below in detail with reference to the drawings. Fig. 1 is a schematic side view of the whole, and Fig. 2 is a plan view of the same. A swinging sorting section equipped with a plurality of swinging sorting plates 3 arranged in multiple stages, 4 a mixed rice tank for storing grains after hulling, and 5 distributing the grains in the tank 4 to each sorting plate 3; A supply tank 6 is a discharge gutter for discharging the grains after sorting, and the grains supplied from the tank 4 to each sorting plate 3 via the supply tank 5 are discharged from the sorting section 2 on the way down. The structure is such that the rice is separated into unpolished rice and paddy by the oscillating motion, and taken out to the delivery chute 7 via the discharge gutter 6.

FIG. 3 is an explanatory diagram of the drive section of the swing sorting section 2, in which reference numeral 8 denotes a swing drive motor, and 9 a counter operatively connected to the motor 8 via a V-pulley 10 and a belt 11. A pulley, 12 is a counter pulley shaft, 13 is a swing drive pulley interlockingly connected to the counter pulley 9 via a V-belt 14;
15 is a tilt angle motor which is an angle adjustment member swingably supported on the machine frame 1 via a bracket 16 and a shaft 17; 18 is a screw shaft drivingly connected to the motor 15; 19 is a rotation support shaft 20; A first rocking plate for tilt adjustment whose base end is fixed and whose tip is connected to the screw shaft 18 via a pivot shaft 21 and an engaging member 22, and 23 is a second swing plate for tilt adjustment whose base end is fixed to the support shaft 20. A rocking plate 24 is a base end shaft for inclination adjustment connected to and supported by the tip of the second rocking plate 23, and 25 is a rocking plate having one end swingably supported on the base shaft 24 and the other end connected to the base shaft 24 through a shaft 26. A right swing arm 27 swingably connects to the sorting section 2, and a right swing arm 27 is connected to the machine frame 1 with a bracket 28 and a shaft 2.
a oscillating angle motor 30 pivotably pivoted via 9;
31 is a screw shaft that is drivingly connected to the motor 27, and 31 is a base end fixed to the rotation support shaft 32, and an intermediate portion connected to the screw shaft 3.
0 through a pivot shaft 33 and an engaging member 34, and whose tip supports the rotating shaft 35 of the pulley 13; 36 is a tension pulley of the belt 14; 37 is a swing angle adjusting plate connected to the rotating shaft 35; a crank plate 3 whose base end is supported by the eccentric wheel body 38 to be fitted;
9 is a balance weight attached to the rotating shaft 35; 40 is a pivot 41 attached to the tip of the crank plate 37;
It is a left swinging arm which is rotatably connected in the middle through a shaft, and one end is swingably connected to the machine frame 1 through a support shaft 42, and the other end is swingably connected to the sorting section 2 through a shaft 43. The sorting unit 2 supported by the swing arms 25 and 40 is oscillated about the shafts 24 and 42 as fulcrums by the driving force transmission action of the motor 8 via the rotation shaft 35, the wheel body 38, and the crank plate 37. At the same time, by adjusting the position of the shaft 24 driven by the motor 15, the left and right inclination angle α of the sorting section 2 can be adjusted, and by adjusting the position of the rotary shaft 35 by driving the motor 27, the sorting section 2 can be adjusted. Swing angle θ
The system is configured to make adjustments.

As shown in FIGS. 4 and 5, each sorting plate 3 of the sorting section 2 is provided in a plurality of stages on a frame 44, and the upper surface of the sorting plate 3 has a resistive roughness having a plurality of concave depressions. An inclination angle β of the front and rear (that is, left and right in FIG. 5) with respect to the horizontal plane of the machine frame 1
The grains to be sorted are distributed and supplied from the tank 4 to the front and rear inclined upper ends of the sorting plates 3, and the grains to be sorted are distributed and supplied to the front and rear inclined upper ends of the sorting plates 3 to the left and right inclined angles α. During the flow down to this point, due to the oscillating motion, the brown rice layer A is separated and concentrated on the left oscillating up side of the sorting plate 3, the paddy layer B on the right oscillating down side, and the mixed rice layer C in the middle. It is constructed so that it flows down.

In addition, a brown rice partition plate 45 for separating the brown rice layer A and the mixed rice layer C and a partition plate 46 for separating the mixed rice layer C and the paddy layer B are provided at the downstream end of the sorting plate 3. The brown rice group separated by 45 is transferred to the brown rice gutter 49 of the discharge gutter 6 via each downstream guide plate 47, 48a, and the mixed rice group separated by the brown rice partition plate 45 and paddy partition plate 46 is transferred to each downstream guide plate. 48
b, to the mixed rice gutter 51 of the discharge gutter 6 via 50a,
Furthermore, the rice grains separated by the rice partition plate 46 are dropped into the rice paddy gutter 52 of the discharge gutter 6 via the downstream guide plate 50b,
It is configured to be taken out into the delivery chute 7.

Furthermore, a fixed mounting plate 5 is provided at the upper end of the frame 44.
A photoconductive type paddy sensor 54, which is a grain sensor for detecting paddy, is installed through the sensor 5.
4 is attached to the mounting plate 53 through an elongated hole 55 and a set bolt 56 so as to be adjustable in left and right movement, and the sensor 54 is installed on the supply side of the sorting plate 3 with a spacing W between rice shakers from the paddy side end to the brown rice side. The sorting plate 3 is positioned so that the light beam from the grain sensor 54 to be sorted flowing down the boundary E between the rice layer B at the top of the sorting plate 3 and the exposed plate surface D is irradiated and the reflected light is received. The structure is such that the shaking boundary E of the rice grains is detected from the difference in reflection between the upper surface and the rice grains.

On the other hand, the brown rice gutter 49 and the mixed rice gutter 5 are connected to the brown rice drop guide port 58 formed by the guide plate 47 and the grain guide plate 57 below the brown rice side of the brown rice partition plate 45.
A switching shutter 59 that can be freely switched to a rotary shaft 60
This switching operation is performed by a handle 61 or a solenoid 62.

FIG. 6 is a circuit diagram for controlling the tilt angle of the oscillating sorting plate 3, in which a light amount regulator 62 for manually setting the reference value of the tilt angle α and a difference in the output of the paddy sensor 54 are detected to control the tilt angle motor 15. a tilt angle adjusting circuit 63 that outputs a forward/reverse signal; a tilt angle reducing/increasing circuit 64, 65 that rotates the tilt angle motor 15 forward/reverse based on the forward/reverse output of the circuit 63; Relaxation side and sudden side limit switches 66 and 67 are provided to detect the minimum and maximum inclination angle α displacements of the swing sorting plate 3 by contacting the plate 19, and adjust the motor 15 based on the output of the paddy sensor 54. By reversing the rotation, the inclination angle α of the oscillating sorting plate 3 is gradually adjusted to keep the paddy separation interval W substantially constant.

Further, manual operation switches 69 and 70 are provided for inputting the driving power source 68 in the forward and reverse directions to the tilt angle motor 15 through the limit switches 66 and 67 and the circuits 64 and 65.
Normally closed manual priority switch 71 linked to 0
The tilt angle adjustment circuit 63 is connected to the switches 66, 67 and the circuits 64, 65 through the switches 66, 67 and 71b, and the manual operation switches 69, 70 preferentially rotate the motor 15 in the forward and reverse directions, thereby causing rocking. The inclination angle α of the sorting plate 3 is formed so as to be manually adjusted.

The present embodiment is constructed as described above, and the hulled grains supplied from the mixed rice tank 4 to each sorting plate 3 via the supply tank 5 flow down along the inclination angle β. On the way, it is stirred by the rocking movement of the sorting plate 3 and the rough sorting surface of the sorting plate 3, and due to the difference in specific gravity and friction coefficient, the brown rice layer A is on the shaking side at the upper end of the inclination angle α, and the brown rice layer A is on the shaking side. The rice layer B is concentrated in the rice layer B, and the mixed rice layer C is concentrated in the middle area. The partition plate 4 is provided at the downstream end.
5 and 46 and taken out to the delivery chute 7. During the oscillating sorting process,
The boundary E between the paddy layer B and the exposed board portion D is shaken and becomes smaller than the paddy shaking interval W, and the paddy ratio detected by the paddy sensor 54 decreases, and the output of the paddy sensor 54 decreases. When the tilt angle becomes smaller, the tilt angle motor 15 is operated via the adjustment circuit 63, each relay 69, 78, and the tilt angle timer 70, and the tilt angle α of the oscillating sorting plate 3 is adjusted.
is made gentler, and the feeding action of the sorting plate 3 toward the swinging side is promoted, thereby increasing the plate surface exposed portion D. on the other hand,
When the boundary E becomes larger than the paddy shaking interval W, the proportion of paddy detected by the paddy sensor 54 increases, and when the plate surface of the sorting plate 3 is detected and the output of the paddy sensor 54 increases, the inclination angle motor 15, contrary to the above, the inclination angle α of the swinging sorting plate 3 is sharpened, the feeding action of the sorting plate 3 to the swinging upward side is reduced, and the exposed part D of the plate surface is made smaller. While keeping the position of the boundary E on the upper surface of the sorting plate 3 approximately constant, the rice shaking interval W is adjusted.
brown rice layer A, paddy layer B and mixed rice layer C.
are formed corresponding to each of the partition plates 45 and 46.

In addition, as shown in FIG. 2, a capacitance sensor 72 is attached to the upper surface of the sorting plate 3 so as to be perpendicular to the curve formed by the boundary E between the rice layer B and the exposed plate part D. , the vertical movement of the boundary E is continuously detected by the sensor 72, and the inclination angle β is controlled in the same manner as above based on the output of the sensor 72, and the brown rice and the paddy are separated and taken out. This is also easy to do.

As is clear from the above embodiments, the present invention provides a grain sensor 54 that detects the boundary between grains to be sorted on the upper surface of the oscillating sorting plate 3 and the plate surface exposed portion D based on the difference in reflected light.
and an angle adjustment member 15 of the swinging sorting plate 3,
The angle adjusting member 15 is actuated so that the grain sensor 54 detects the boundary E between the paddy layer B and the exposed plate portion D on the supply side of the swing sorting plate 3. Therefore, since the angle is adjusted so as to detect the boundary E, the error in angle adjustment can be easily reduced compared to the conventional technology in which a plurality of switches are provided, and the incidence of malfunction in angle adjustment due to failure can be easily reduced. At the same time, the grain sensor 54 detects the boundary E between the rice grain layer B and the plate surface exposed portion D where the difference in reflected light amount becomes extremely large, which simplifies the sensitivity setting of the grain sensor 54 and This makes it easy to improve the accuracy of angle adjustment.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a side view of the whole, FIG. 2 is a plan view of the same, FIG. 3 is a front view of the same, and FIG. 4 is a sectional view of the main part from the front. FIG. 5 is a sectional side view of the main part, and FIG. 6 is a circuit diagram for controlling the tilt angle of the oscillating sorting plate. 3... Rocking sorting plate, 15... Inclination angle motor (angle adjustment member), 54... Rice sensor (grain sensor) B... Rice layer, D... Board surface exposure part, E... Boundary part.

Claims (1)

[Claims] 1. A grain sensor 54 that detects the boundary between grains to be sorted on the upper surface of the oscillating sorting plate 3 and the plate surface exposed portion D by a difference in reflected light, and an angle adjustment member 15 of the oscillating sorting plate 3, Oscillating sorting characterized in that the angle adjusting member 15 is operated so that the grain sensor 54 detects the boundary E between the paddy layer B and the plate surface exposed portion D on the supply side of the oscillating sorting plate 3. Automatic sorting device of the machine.