JPS6145517B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an automatic control device for an oscillating grain sorting machine.

Prior art Perfect identification of brown rice and paddy in a swinging sorting machine in which an illumination light is installed slightly above the front end of a swinging sorting plate that swings back and forth diagonally up and down and is movable in the width direction of the swinging sorting plate. A take-out device is known as Japanese Patent Publication No. 48-26146, and this device detects the branching point between brown rice and paddy on the oscillating sorting plate by light detection using the illuminating light, and detects changes in the splitting point. Accordingly, the extraction gutter is constantly moved relative to the swinging sorting plate, and the detection part of the irradiation light is not separated into three types of grain bundles: brown rice, mixed grains of unhulled brown rice, and paddy. It has always been impossible to perform stable and accurate detection due to changes in the thickness of the grain layer on the oscillating sorting plate.

In addition, a separating device for a swing sorting plate that allows three types of grain bundles to flow in the outflow direction and flow out from the edge of the grain sorting plate is known as Japanese Utility Model Publication No. 1568/1983. The material is moved along a screw rod by manually turning a handle on a partition plate installed at the end of the grain sorting machine, and the operator can check the flow distribution state of the grain bundles on the grain sorting machine. It was necessary to constantly monitor the

Problems to be Solved by the Invention It is an object of the present invention to overcome the above-mentioned drawbacks, to provide a grain selection machine capable of always stably and accurately detecting grain bundles by a photoelectric device while keeping the thickness of the grain bundle constant. Even if the boundary moves between the mixed grain bundle and the grain bundle with the above small friction coefficient, the separation wall is automatically moved in the same direction according to the movement of the boundary to maintain the accuracy of sorting different colored grains. An object of the present invention is to provide an automatic control device for the sorting panel.

Means for Solving the Problems The automatic control device for the oscillating grain sorting machine of the present invention provides three types of magnetic flux outflow paths at the edge of the grain sorting board that swings diagonally up and down, and between the outflow paths. In an oscillating grain sorting machine provided with a separation wall, a photoelectric device consisting of a light source and a light receiving element is integrally mounted on the separation wall, and a partition wall is formed with a restriction passage of a constant height on the grain inflow side of the photoelectric device. The separation wall is connected to an electric motor via a separation moving body, and a control device for detecting a detection signal from the light receiving element is connected to the electric motor.

Function: Three types of grain bundles flow out from the outlet provided at the edge of the grain sorting board that swings up and down, and a separation mold provided between the outlet channels separates the three types of grain bundles, respectively. A photoelectric device consisting of a light source and a light receiving element integrally mounted on the separation wall detects the boundary between the grain bundle with a small friction coefficient and the mixed grain bundle on the grain sorting table, and A restriction passage of a constant height formed in the provided partition wall makes the grain bundle reaching the photoelectric device a grain layer of a constant thickness, and a control device connected to the electric motor controls the movement of the boundary by changing the amount of light received by the light receiving element. When detected, an electric motor is driven, and the electric motor moves the separation wall in the same direction as the boundary moves through the separation wall moving body.

Embodiments Hereinafter, embodiments of the present invention will be described in detail based on the drawings. In FIGS. 1 and 2, reference numeral 1 denotes a rough surface grain selection machine that swings diagonally up and down; Outflow channels 3, 4, and 5 for three types of grain bundles are formed at the edge 2 of the grain bundle to separately flow out the brown rice, paddy/brown rice mixed grains, and paddy separated by the rough surface grain sorting board 1,
A movable separation wall 6 is provided along the board edge 2 between the brown rice outflow path 3 and the paddy/brown rice mixed grain outflow path 4 and the paddy/brown rice mixed grain outflow path 4 and the paddy outflow path 5. A separation wall 19 is provided between them.

For example, mixed grains of paddy and brown rice are supplied onto the rough surface sorting grain board 1 as different-colored grains, and the mixed grains flow in a lateral outflow direction C with respect to the rocking direction AB of the coarse grain grain selection board 1. At the same time, grain bundles with a small friction coefficient, that is, brown rice grain bundles R, are concentrated on the shaking upper side H, and grain bundles with a large friction coefficient, that is, paddy grain bundles P, are concentrated on the opposite shaking lower side L. , a mixed grain bundle Q of paddy brown rice is unevenly concentrated between the brown rice grain bundle R and the paddy grain bundle P, and three grains of paddy, brown rice, and mixed grains of paddy brown rice are concentrated.
Seed bundles P, R, and Q flow in the outflow direction C, and are separated and flowed out from the board edge 2 of the rough surface grain sorting board 1, and are separated from the board end 2 provided between each outflow path 3, 4, and 5. Separation wall 6 and separation wall 19 that move and adjust along
Depending on the flow, brown rice, mixed grains of paddy and brown rice, and paddy are sent to outlet 3.
4 and 5 are being introduced separately.

As shown in FIGS. 2 and 4, a photoelectric device 9 is integrally mounted on the separation wall 6 provided between the outflow path 3 for brown rice and the outflow path 4 for mixed grains of paddy and brown rice. The photoelectric device 9 includes an upper light source 7 that emits light onto the rice grain bundle near the boundary D between the brown rice grain bundle R on the swinging side H of the coarse grain sorting machine 1 and the mixed grain bundle Q of unhulled brown rice, and a light source 7 at the top that emits light onto the rice grain bundle near the boundary D between the brown rice grain bundle R and the mixed grain bundle Q of unhulled brown rice on the shaking side H of the coarse grain sorting machine 1; It consists of a lower light receiving element 8 that detects the amount of light, and the light emitting part of the photoelectric device 9 includes a partition wall 12 and a separation wall 6, which form a limiting passage 11 of a constant height to generate a rice grain layer field 10 of a constant thickness. are integrally installed, and the restriction passage 11 is provided on the grain inflow side of the photoelectric device 9.

A screw hole 15 is bored in the separation wall 6, and one end of a screw shaft 16, which is provided along the edge 2 of the rough surface grain sorting machine 1 and serves as a separation wall moving body, is screwed into the screw hole 15. and the other end of the screw shaft 16 is connected to the rough surface grain selection machine 1.
The reversible rotary motor 13 is connected to a control device 14, and the separation wall 6 is connected to a guide track horizontally extending between the side walls of the coarse grain sorting machine 1. 17 along the board edge 2. The reversible rotary electric motor 13 moves the positions of the light-receiving element 8 and the separation wall 6, which detect the amount of transmitted light that changes depending on the color of the brown rice grain bundle R and the mixed grain bundle Q of unhulled brown rice.

In addition, a transparent glass window 18 is provided in the rough surface sorting machine 1 near the boundary D between the brown rice grain bundle R and the mixed grain bundle Q of unhulled brown rice, and a light receiving element 8 is installed below the transparent glass window 18. A light source 7 is installed above the transparent glass window 18 of the rough surface sorting machine 1, facing the light receiving element 8, and the field 10 of the rice grain layer is illuminated by the light source 7.
In this case, the rice grain layer flowing in the outflow direction C is arranged into a constant thickness layer by the restriction passage 11 formed in the partition wall 12, so that the photoelectric device 9 always transmits light through the rice grain layer having a constant thickness.

Note that the light source 7 and the light receiving element 8 of the photoelectric device 9 may be mounted on either the upper or lower side of the rough surface grain sorting machine 1 with their positions changed.

Next, the operation of this embodiment will be explained.

When mixed grains of paddy and brown rice are fed as different-colored grains onto the coarse grain sorting machine 1, the coarse grain grain sorting machine 1 swings up and down depending on the mixing ratio of paddy and brown rice, the flow rate, the quality of the paddy and brown rice, etc. When the sorting efficiency changes and the mixed grain bundle Q of unhulled brown rice flows in a larger amount than the brown rice grain bundle R, the width of the mixed grain bundle Q increases and moves to the shaking side H, where it is mixed with the brown rice grain bundle R. The boundary D with the grain bundle Q moves to the shaking up side H. At this time, the light source 7 of the photoelectric device 9 emits light onto the rice grain bundle, which is a field 10 of a rice grain layer of a certain thickness, through a restricted passage 11 of a certain height formed in the partition wall 12, and is transmitted from the light source 7 through the rice grain bundle. The light-receiving element 8 detects the amount of transmitted light, and since the amount of light received by the light-receiving element 8 decreases due to the paddy, this is signaled to the limiting device 14, and the reversible rotary motor 13 is connected to the separating wall 6.
is operated to move to the swinging side H. Said 13
As a result of the operation, the screw shaft 16 serving as the separation wall moving body rotates, and the rotation of the screw shaft 16 causes the separation wall 6 to move to the swinging side H while being guided by the guide track 17, and the partition wall 12 integral with the separation wall 6 is moved. Photoelectric device 9 mounted on
moves so as to constantly detect the boundary D between the brown rice grain bundle R and the mixed grain bundle Q. The width of the brown rice grain bundle R is expanded, and the boundary D between the brown rice grain bundle R and the mixed grain bundle Q is on the swinging side L.
, the reversible rotary motor 13 is reversely rotated, the separation chamber 6 is moved to the swinging side L, and the photoelectric device 9 is always moved in accordance with the movement of the boundary D.
At the separation wall 6, the brown rice grain bundle R and the mixed grain bundle Q are reliably separated and flowed out from the outflow paths 3 and 4, respectively, and the paddy grain bundle P flows out from the outflow path 5, thereby maintaining the accuracy of sorting different colored grains. This improves the sorting efficiency and sorting ability of the rough surface sorting machine 1.

The height of the grain layer in the detection section of the photoelectric device 9 is kept constant by the restriction passage 11 of the partition wall 12, and the photoelectric device 9 always detects the amount of transmitted light stably and accurately.

Note that when the light receiving element 8 detects a change in the amount of transmitted light, the delay resistance device provided in the restriction device 14 intermittently adjusts the movement of the separation wall 6 to maintain a stable operation. It is also possible.

FIG. 3 shows another embodiment of the present invention, in which a wire rope 20 serving as a moving body of the separation wall is integrally attached to the separation wall 6, and the wire rope 20 is connected to pulleys 21, 22 as an annular band. , 23 and a drive wheel 24 fitted to the main shaft of a reversible rotating electric motor 13 having a speed reduction mechanism. In this embodiment, a reversible rotary motor 13 is operated by a control device 14 that detects a signal from a light receiving element 8 of a photoelectric device 9, and a drive wheel 24, which is rotated in both forward and reverse directions by the reversible rotary motor 13, drives a wire. The rope 20 is rotated in either the forward or reverse direction, and the separation wall 6, which is integral with the wire rope 20, is appropriately moved and adjusted in accordance with the boundary D between the brown rice grain bundle R and the mixed grain bundle Q. The rest of the structure is exactly the same as the embodiment shown in FIG. 1, so the same parts will be described with the same reference numerals.

Note that when the photoelectric device 9 detects the amount of reflected light, the light source 7 and the light receiving element 8 are mounted on the same side of the rough surface sorting machine 1, either the front or the back.
When the grain separator 1 is mounted on the back side of the rough surface grain selection machine 1, a transparent window is provided on the rough surface grain selection machine 1, and the distance between the photoelectric device 9 and the surface of the grain layer is kept constant by the restriction passage 11 of the partition wall 12. Therefore, the amount of reflected light can be detected stably and accurately.

Effects of the Invention As described above, according to the automatic control device for the oscillating grain sorting machine of the present invention, the outflow passages for three types of grain bundles are provided on the board side of the sorting board that swings diagonally up and down, and the By providing a separation wall between the outflow channels, three types of grain bundles flow out from the edge of the grain sorting machine while being separated, and a photoelectric device consisting of a light source and a light receiving element is integrally mounted on the separation wall. , by providing a partition wall with a restriction passage of a constant height on the grain inflow side of the photoelectric device, the restriction passage of a constant height makes the grain bundle reaching the photoelectric device a rice grain layer of a constant thickness; The photoelectric device can always perform stable and accurate detection, and the separation wall is connected to an electric motor via a separation wall moving body, and the electric motor is connected to a limiting device that detects the detection signal from the light receiving element. , when the boundary between the grain bundle and the mixed grain bundle with a small friction coefficient on the grain sorting plate moves,
The control device detects a change in the amount of light received by the light receiving element, and the control device drives the electric motor,
The electric motor automatically moves the separation wall in the same direction as the boundary moves through the separation partition moving body to maintain the accuracy of different-color grain sorting and improve the sorting efficiency of the grain sorting board. I can do it.

[Brief explanation of the drawing]

FIG. 1 is a plan view of an oscillating grain sorting machine according to an embodiment of the present invention, FIG. 2 is a side sectional view of the same essential parts, and FIG. 3 is a
FIG. 4 is a side sectional view of the main part of another embodiment of the present invention.
FIG. 3 is a perspective view of the main part of FIG. 2; DESCRIPTION OF SYMBOLS 1... Rough surface sorting machine, 2... End plate, 3... Outflow path, 4... Outflow path, 5... Outflow path, 6... Separation wall, 7... Light source, 8... Light receiving element, 9...Photoelectric device, 10...Rice grain layer field, 11...Restriction passage, 1
2... Bulkhead, 13... Reversible rotating electric motor, 14...
Control device, 15... Screw hole, 16... Screw shaft, 17
...Guidance trajectory, 18...Transparent glass window, 19...
Separation wall, 20... Wire rope, 21... Pulley, 22... Pulley, 23... Pulley, 24... Drive wheel, A, B... Rocking direction, C... Outflow direction, D...
... Boundary, H... Shaking upper side, L... Shaking lower side, P... Paddy grain bundle, Q... Mixed grain bundle, R... Brown rice grain bundle.

Claims (1)

[Scope of Claims] 1. A swinging grain sorting machine which is provided with outlet passages for three types of grain bundles at the edge of the grain sorting machine that swings up and down diagonally, and a separation wall is provided between the outlet passages. A photoelectric device consisting of a light-receiving element is integrally mounted on the separation wall, a partition wall having a restriction passage of a constant height is provided on the grain inflow side of the photoelectric device, and the separation wall is connected to the separation wall via a separation wall moving body. 1. An automatic control device for an oscillating grain sorting machine, characterized in that the control device is connected to an electric motor and communicates with the electric motor to detect a detection signal from the light receiving element. 2. The automatic control device for an oscillating grain sorting machine according to claim 1, wherein the separation wall moving body is a screw shaft screwed into the separation wall. 3. The automatic control device for an oscillating grain sorting machine according to claim 1, wherein the separation wall moving body is an annular band attached to the separation wall.