JP2000042496A - Control apparatus of shaking sorter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance the control of a shaking sorter and to reduce cost by detecting the thickness of a grain layer to enable the regulation of the angle of lateral inclination of a shaking sorting plate or the information of layer thickness abnormality by utilizing the detection data of an unhulled rice/unpolished rice discrimination sensor for controlling the partition position of an unhulled rice partition plate. SOLUTION: During shaking sorting work, an unhulled rice/unpolished rice discrimination sensor 30 detects a distribution boundary detection position while moved on a shaking sorting plate 15 laterally and calculates the partition position of an unpolished rice partition plate 18 on the basis of the detection boundary position to move to the partition position of the unpolished rice partition plate 18. During work, the moving position of the unhulled rice/ unpolished rice discrimination sensor 30 is detected by an unhulled rice/unpolished rice discrimination sensor moving position detection sensor and, subsequently, the sorted grain on the shaking sorting plate 15 is irradiated with a predetermined single wavelength light from the unhulled rice/unpolished rice discrimination sensor 30 and, from this detection data, the thickness of a grain layer at a predetermined position is measured. Subsequently, the measured grain layer thickness and reference grain layer thickness are compared to judge whether or not the layer thickness is proper and, when the layer thickness is not proper, it is judged whether or not the measured layer thickness is thick and, when the thickness is not proper, it is judged whether or not the thickness of the measured layer is thick and, in a thick case, the angle of lateral inclination of the shaking sorting plate 15 is gently regulated and, in a non-thick case, the angle of lateral inclination of the shaking sorting plate 15 is regulated acutely.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a control device of a swing sorting device.

[0002]

2. Description of the Related Art A rice / brown rice distribution boundary position of a sorting grain of a swinging selection plate is detected by a rice / brown rice discrimination sensor, and a brown rice partition plate is automatically placed at a partition position related to the rice / brown rice boundary detection position. Devices for dynamically adjusting the movement are known.

[0003]

Problems to be Solved by the Invention A rice / brown rice discriminating sensor detects the boundary position of the rice / brown rice distribution of the sorted grains on the rocking sorting plate and controls the brown rice partitioning plate. Although it can be prevented, when the lateral inclination angle of the swing sorting plate is not properly adjusted, the grains do not spread over the entire plate surface, and the work efficiency is reduced.

Accordingly, the present invention utilizes the detection information of a paddy / brown rice discrimination sensor, which is required to control the position of the brown rice partition plate,
The purpose of the present invention is to improve the sorting efficiency by detecting the grain layer thickness of an oscillating sorting plate without requiring a special sensor.

[0005]

The technical means of the present invention for solving such a technical problem is a swing sorting plate 15.
And an oscillating sorting device having a brown rice partition plate 18 and a brown rice partitioning plate 18 by detecting the boundary distribution position of the grain / brown rice of the selected grain on the swing sorting plate 15 by the rice / brown rice discrimination sensor 30. From the detection information of the rice / brown rice discrimination sensor 30 and the rice / brown rice discrimination sensor movement position detection means for detecting the movement position of the rice / brown rice discrimination sensor 30 Kernel layer thickness detecting means capable of detecting the grain distribution layer thickness on the oscillating sorter plate 15, and oscillating sorter plates in relation to the detection of the unsuitable grain layer thickness by the kernel layer thickness detecting means. The control device of the swing sorting device is constituted by a swing sorting plate lateral tilt angle control means for adjusting the lateral tilt angle of 15 or a notifying means for notifying the detection of the inappropriate layer thickness.

[0006]

When the swing sorting operation starts, the paddy / brown rice discrimination sensor 30 detects the grain distribution state while moving on the swing sorting plate 15 in the horizontal direction, and detects the number of detected grain grains within a predetermined time and the reference grain size. When the number of detected rice grains is large, the rice / brown rice discrimination sensor 30 is moved to the swinging side 15c when the number of detected rice grains is large. , The position where the number of detected rice grains reaches the reference number of rice grains is determined as the detection boundary of the distribution of rice and brown rice, and the brown rice partition plate 18 is moved to the partition position based on the detected boundary position.

During the operation, the paddy / brown rice discrimination sensor 30 is moved by the paddy / brown rice discrimination sensor moving position detection sensor 46.
The movement position on the rocking sorter plate 15 is detected.
For example, the grain layer thickness at a predetermined position is determined from the detection information of the predetermined single wavelength light of the brown rice determination sensor 30. Next, the measured grain layer thickness is compared with the reference grain layer thickness to determine whether or not the appropriate layer thickness is thick. If the thickness is thick, the lateral inclination angle of the swing sorting plate 15 is loosely adjusted, and is not thick. In this case, the lateral inclination angle of the swing sorting plate 15 is adjusted to a steep inclination. Alternatively, the abnormality of the grain layer thickness is notified.

[0008]

Embodiments of the present invention will be described with reference to the drawings. Hereinafter, embodiments of the present invention shown in the drawings will be described. First, the overall configuration of the hulling sorter will be described with reference to FIGS. The rice hulling sorting machine is a rice hulling unit 1 that wind-selects the rice hulled from the hulling unit 1
It is composed of a rocking sorter 3, a mixed rice fryer 4, a brown rice fryer 5, and the like, which separate and sort mixed rice after wind selection into paddy and brown rice.

The hulling unit 1 includes a hulling hopper 6, a hulling roll 7,
7 comprises a rice hulling room 8 and the like, and the rice hulling rice style selection unit 2 comprises a rice hulling rice style selection box 9, a rice hulling rice style selection path 10, a pity trough 1
1, a sliding rice receiving gutter 12, a suction fan 13, a dust discharge tube 14, and the like. Next, the swing sorting device 3 will be described with reference to FIG. The plate surfaces of the swing sorting plates 15, 15,... Are formed with unevenness for sorting, and one side in the vertical direction is a high supply side 15a.
The other side is a low discharge side 15b, one side in the horizontal direction is a high swinging side 15c, the other side is a low swinging side 15d, and the swing sorting plate 15 is configured to be inclined in both the vertical and horizontal directions, The swing sorting plate 15 is reciprocated up and down in the horizontal direction by a swing device.

A supply port on the supply side 15a of the oscillating sorting plate 15 is provided with a sliding rice receiving gutter 12, a mixed rice fryer 4, a distribution supply gutter 1
This is a configuration in which mixed rice is supplied through the distribution case 6 and the distribution case 17. The mixed rice supplied to the oscillating sorting plate 15 is sorted according to the size of the granules, the size of the specific gravity, the size of the friction coefficient, etc., and the small brown rice having a heavy specific gravity is unevenly distributed on the rocking upper side 15c and compared with the brown rice. The paddy having a large specific gravity is unevenly distributed on the lower side 15d, and the unmixed mixed rice of unmixed rice and brown rice is unevenly distributed on the middle portion thereof, and these grains are discharged on the discharge side 15b of the oscillating sorter 15. In this configuration, the rice is separated and taken out by a brown rice partition plate 18 and a paddy partition plate 19 which are provided to face.

The extracted brown rice is taken out of the machine through a brown rice take-out gutter 20, a brown rice flow path 21, and a brown rice milling machine 5, and
The mixed rice is rocked through a mixed rice extraction gutter 22, a mixed rice flow path 23, a sliding rice receiving gutter 12, a mixed rice fryer 4, a mixed rice hopper 24, a distribution supply gutter 16, and a distribution case 17, and a rocking sorter plate 15 And re-sort. In addition, paddy is paddy take-out gutter 25, paddy channel 26,
This is a configuration in which the rice is returned to the rice hulling unit 1 via the rice hulling machine 27, and the rice is hulled again.

The brown rice partition plate 18 is supported by a partition plate movement adjusting means 28, which is constituted by a screw bar disposed opposite to the discharge side of the swinging selection plate 15, so that the brown rice partition plate 18 can be moved and adjusted in the lateral direction. 29 is reciprocally moved in the horizontal direction when it is rotated in the forward and reverse directions. The uppermost movement position and the lowermost movement position include a partition plate origin switch (upward swing) 33 and a partition plate origin switch (upward and downward). ) 34 are provided.

Above the discharge side 15b of the swinging sorting plate 15,
When the rice / brown rice discrimination sensor 30 is arranged, and the rice / brown rice discrimination sensor 30 is supported so as to be freely movable in the lateral direction by the sensor moving means 31 composed of a screw bar, and the sensor adjustment motor 32 is rotated forward and reverse, This is a configuration that reciprocates in the lateral direction. Note that a sensor origin switch (upward) 35 for detecting the movement of the rice / brown rice discrimination sensor 30 to the uppermost position, and a sensor origin switch for detecting the movement of the rice / brown rice sensor 30 to the uppermost position. (Swinging side) 36 is provided.

The rice / brown rice discrimination sensor 30 is constructed as follows in this embodiment. An electromagnetic wave including a moisture absorption wavelength band and a reference wavelength band that is not absorbed by moisture is applied to the grain from a light emitting portion constituted by an incandescent lamp, and reflected light (or transmitted light) from the grain is used for the moisture absorption wavelength band. The light is received by a detection element, which is an optical filter section, via a band-pass filter. The detection element converts the light into a large or small voltage value in accordance with the amount of received light, and sends the converted voltage to a control section 41 built in the CPU. Also,
The reference wavelength band reflected by the bandpass filter is sent to the reference wavelength band detection element unit via the filter, converted into a voltage value, and sent to the control unit 41. Thus, the control unit 41
Calculates the ratio of both detection voltage values, and calculates
This is a configuration for determining the type of brown rice.

As shown in FIG. 3, a control unit 41 having a built-in CPU includes a paddy / brown rice discrimination sensor 30, a partition plate origin switch (upward swinging) 33, and a partition plate origin switch (upward swinging).
4, sensor origin switch (upward swing) 35, sensor origin switch (downward swing) 36, main motor 4 for driving the hulling sorter
2, a load current sensor 44 for detecting a load current value, a paddy / brown rice discrimination sensor moving position detection sensor 46, a lateral inclination angle detection sensor 47, and an operation switch 45 are connected via an input interface.

The control unit 41 includes a partition plate adjusting motor 29, a sensor adjusting motor 32, a lateral inclination angle adjusting motor 48, and a main motor 42 via an output interface (not shown) and a driving circuit. Husband is connected. Next, the control of the brown rice partition plate by the control unit 41 will be described. When this control is started, the rice / brown rice discrimination sensor 30 moves to the lower side 15d by a predetermined distance from the uppermost upper side 15c position, stops for a predetermined time, and detects the voltage value of the grain. Next, the number of detected rice grains within a predetermined time is compared with the control reference value, and when the number of detected rice grains is large (or small), the rice / brown rice discrimination sensor 30 is moved upward 15c (or downward 15d). While moving a predetermined distance, continue the operation of detecting the boundary between rice and brown rice, and determine the position where the number of detected
This is the detection position of the brown rice distribution boundary. Next, based on the boundary detection position of the paddy / brown rice, the partition position of the brown rice partition plate 4 is calculated, the brown rice partition plate 18 is moved to the partition position, and the brown rice is partitioned by the brown rice partition plate 18 at a position where paddy is not mixed. Take it out of the machine.

Next, the embodiment shown in FIGS. 4 and 5 will be described. In this embodiment, the paddy / brown rice discrimination sensor 30 scans the rocking separation plate 15 in the lateral direction to detect the boundary position between the paddy / brown rice and controls the brown rice partition plate 18 to the relevant partition position. In the brown rice partition plate control device of the device,
The thickness of the grain layer is detected based on the detection value of the single wavelength light of the brown rice discrimination sensor 30, and the lateral inclination angle of the swing sorting plate 15 is also controlled.

The rocking / sorting plate 15 by the rice / brown rice discrimination sensor 30
By detecting the boundary position between the unpolished rice and brown rice and controlling the unpolished rice partitioning plate 15, the mixing of unpolished rice into the unpolished rice can be prevented. However, if the tilt angle of the swing sorting plate 15 is not appropriate, the grain Work efficiency is reduced because it does not spread over the entire surface. Therefore, in this embodiment, the horizontal inclination angle of the swing sorting plate 15 is also adjusted by using the detection value of the single wavelength light of the paddy / brown rice discrimination sensor 30 for controlling the partition position of the brown rice partition plate 18 to control the grain. The purpose of the present invention is to improve the sorting efficiency while keeping the grain layer thickness constant and requiring no special sensor.

Next, the control contents are detected by referring to FIG. When this control starts, the movement position of the rice / brown rice discrimination sensor 30 is calculated by the rice / brown rice discrimination sensor movement position detection sensor 46. Next, the rice / brown rice discrimination sensor 30
For example, the grain layer thickness is measured from a detection signal of a predetermined wavelength of the reference wavelength light. Next, the measured layer thickness is compared with the reference layer thickness to determine whether or not the thickness is appropriate.If the thickness is not appropriate, it is determined whether or not the measurement thickness is large. A gentle inclination adjustment command is output to the inclination angle adjustment motor 48 to adjust the side inclination angle gently. If the inclination is not thick, the inclination is adjusted by the side inclination angle adjustment motor 48 to a steep inclination, and then a timer function for a predetermined time is started. When the timer function finishes counting,
It is determined that the sorting state after the inclination adjustment is stable, and a determination is made as to whether or not the next grain layer thickness is appropriate. In addition, when it is detected that the grain thickness is not the appropriate grain layer thickness, the notification device may be notified of the fact.

If the measured layer thickness is proper, the process returns and after a predetermined time, it is determined whether or not the next grain layer thickness is proper. FIG. 5 (1) shows an embodiment of the layer thickness detection, in which a predetermined single wavelength light is selected from the moisture absorption wavelength light or the reference wavelength light of the paddy / brown rice discrimination sensor 30 for the layer thickness measurement. To detect the grain layer thickness, and
As shown in FIG. 5 (2), the layer thickness at a predetermined position from the horizontal swinging upper side to the swinging lower side of the swing sorting plate 15 is detected. The inclination angle is adjusted to a steep inclination, and the inclination is adjusted to a gentle inclination when the layer thickness becomes thin.

As shown in FIG. 5 (3), when the lateral inclination angle of the swing selection plate 15 changes to a steep or gentle inclination with respect to the reference lateral inclination angle, as shown in FIG. If the value is corrected to a higher or lower value, a more accurate grain layer thickness can be detected. Next, the embodiment shown in FIG. 6 will be described. In this embodiment, the grain layer thickness on the oscillating sorting plate 15 is measured as a voltage value with single wavelength light of the rice / brown rice discrimination sensor 30, and the grain layer thickness data is calculated from the peak value (or bottom value). It is what we are trying to get.

The grains on the swing sorting plate 15 are sorted while swinging obliquely up and down in the horizontal direction, and the paddy / brown rice discrimination sensor 30 moves the localization value in the horizontal direction to change the grain layer thickness. Since the measurement is performed as a value, the distance from the sensor to the grain detection surface changes due to the swing, and as shown in FIG. 6A, the measured voltage value changes in synchronization with the swing. In this embodiment, since the peak value (or bottom value) in the change of the measured voltage value is used as the detection data of the grain layer thickness, the signal processing configuration includes a peak value (or bottom value) detection circuit and an interrupt circuit. Thus, the circuit can be simplified and the cost can be reduced.

The circuit configuration will be described with reference to FIG.
The measured voltage value of the single wavelength light of the rice / brown rice discrimination sensor 30 is input from the A / D input unit of the control unit 41 via the smoothing circuit 49, and is also input to the comparison unit 550 via the smoothing circuit 49 and smoothed. From the circuit 49 via the delay circuit 51, the comparison unit 5
0, and as shown in FIG. 6 (3), when the input voltage values from both circuits coincide with each other as a measurement timing,
The peak value (or the bottom value) is determined as shown in FIG.

Thus, the thickness of the grain layer is determined based on the measured peak value, for example, as shown in the embodiment of FIG. 4, and the lateral inclination angle of the swing sorting plate 15 is controlled. It is. Next, the embodiment shown in FIG. 7 will be described. This embodiment detects the grain layer thickness on the swing sorting plate 15 based on the measured voltage value of the single wavelength light of the paddy / brown rice discrimination sensor 30 and controls the swing angle of the swing sorting plate 15 by swinging. The sorting device relates to a method for determining whether or not the layer thickness is appropriate, and compares a reference layer thickness pattern in a predetermined range set on the swing sorting plate 15 with a detection layer thickness value of the rice / brown rice discrimination sensor 15. If it deviates from the reference layer thickness pattern, it is determined that the layer thickness is inappropriate.

Next, the control contents will be described based on the flow of FIG. When this control starts, the movement position of the rice / brown rice discrimination sensor 30 is calculated from the detection information of the rice / brown rice discrimination sensor movement position detection sensor 46. When the movement position of the sensor reaches the first measurement position in the preset detection range in which the sensor has moved downward by a predetermined distance from the uppermost position, the paddle / brown rice discrimination sensor 30 irradiates a predetermined single wavelength, and The grain layer d1 is measured. Next, the paddy / brown rice discrimination sensor 30 is moved to the second measurement position on the lower side by a predetermined distance, and the grain layer is thick d.
Calculate the slope of the distribution kernel surface from 2.

Then, the measured inclination is compared with the reference inclination to determine whether or not it is appropriate. If it is not appropriate, it is determined whether or not the descending layer thickness is thick. If the descending layer thickness is not thick, the lateral inclination angle of the swing selection plate 15 is adjusted to a steep inclination. Adjust the side inclination angle to a gentle inclination. Next, a timer function for a predetermined time is started, and when the timer is up, the selection state after the adjustment is determined to be stable, and the next appropriate layer thickness determination is performed after a predetermined time.

The grain layer thickness distribution of the rocking sorter plate 15 is determined by measuring the layer thickness of the rocking sorter plate 15 at the uppermost rocking position and the lowermost rocking position, respectively, to determine whether or not it is appropriate. Although it is necessary, in this embodiment, the suitability is determined by estimating the grain distribution state of the entire plate surface from the measurement layer thickness at a plurality of preset positions in the lateral movement range of the rice / brown rice discrimination sensor 30. And the layer thickness can be determined in a short time, and a dedicated layer thickness detection sensor is not required, so that the cost can be reduced.

Next, the embodiment shown in FIG. 8 will be described. This embodiment has a configuration in which the lateral movement position of the paddy / brown rice discrimination sensor 30 for controlling the brown rice partitioning plate 18 on the swinging sorting plate 15 can be detected, and the lateral inclination angle of the swinging sorting plate 15 is detected as the lateral inclination angle. In the rocking sorting device that can be detected by the sensor 47, the distribution layer thickness state of the grains is measured from the detection information of the rice / brown rice discrimination sensor 30, and the supply amount to the plate surface is calculated from the layer thickness distribution state. It is intended to stabilize the sorting state by adjusting the supply amount to a preset reference supply amount.

Next, the control contents will be described with reference to the flow of FIG. When this control is started, a predetermined single wavelength light is irradiated to the distribution kernels from the rice / brown rice discrimination sensor 30,
The grain thickness data in a predetermined range in the horizontal direction is read into the control unit 41 from the detected voltage value. Next, a grain supply amount is calculated from the grain layer thickness data by a predetermined calculation formula (or a predetermined table).

Next, the calculated grain supply amount is compared with the reference grain supply amount to determine whether or not the supply amount is appropriate. If the supply grain amount is appropriate, then the rice / brown rice discrimination sensor is used. From the 30 pieces of detection information, for example, in the same manner as in the embodiment shown in FIG. 7, it is determined whether or not the grain layer thickness distribution is appropriate. If the grain layer thickness is appropriate, the process returns. When the supply amount of the grain is not appropriate, it is determined whether or not the supply amount of the grain is larger than the reference supply amount of the grain. The amount is decreased and adjusted, and when the amount is not large, the supply amount is increased and adjusted. When the supply amount is appropriate, the process shifts to the next grain layer thickness adjustment control step.

When the process proceeds to the grain layer thickness adjustment control process, the slope of the measured grain surface is compared with a reference slope to determine whether or not the grain is appropriate. It is determined whether or not the lateral inclination angle of the selection plate 15 is steep. When the inclination is steep, a gentle inclination adjustment command is issued to the lateral inclination angle adjustment motor 48 to adjust the inclination to a gentle inclination.
Adjust to a steep slope.

In order to optimize the grain layer thickness distribution on the swing sorting plate 15, it is necessary to appropriately adjust the amount of grain supplied to the swing sorting plate 15 and the lateral inclination angle of the plate surface. Optimum sorting requires work experience. In this example,
The distribution of the grains is measured by the paddy / brown rice discrimination sensor 30 that can be scanned in the horizontal direction of the swing sorting plate 15 to determine whether or not the grain is appropriate, and the grain supply amount and the horizontal inclination angle of the plate surface are adjusted. Therefore, the amount of grain on the plate surface is adjusted without excess or shortage to prevent the repetition of the adjustment, and the control can be performed by the detection information of the paddy / brown rice discrimination sensor 30. Can also be reduced.

[0033]

According to the present invention, as described above, the grain layer thickness of the swing sorting plate 15 is detected using the detection information of the paddy / brown rice discrimination sensor 30 for controlling the partition position of the brown rice partition plate 15. It is also possible to adjust the lateral inclination angle of the swing sorting plate 15 or to notify the layer thickness abnormality, and it is possible to improve the sorting efficiency of the swing sorting apparatus without requiring a special sensor.

[Brief description of the drawings]

FIG. 1 is an overall cut side view.

FIG. 2 is a perspective view of a main part.

FIG. 3 is a block diagram.

FIG. 4 is a flowchart.

FIG. 5 is a graph, a front view.

FIG. 6 is a graph, circuit diagram, and time chart.

FIG. 7 is a flowchart and a graph.

FIG. 8 is a flowchart, front view.

[Explanation of symbols]

Reference numeral 1: Rice hulling unit, 2: Sliced rice style selection unit, 3: Swing sorting device, 4
... Mixed rice fryer, 5 ... Brown rice fryer, 6 ... Rice hopper, 7 ...
Rice hulling roll, 8 ... Rice hulling room, 9: Rice husk rice selection box, 10 ... Rice husk rice selection path, 11 ... Pity gutter, 12 ... Rice ridding gutter, 13 ...
Suction fan, 14 ... Dust cylinder, 15: Swing sorting plate, 16 ...
Distribution supply gutter, 17 ... distribution case, 18 ... brown rice partition plate, 1
9 ... Rice partition plate, 20 ... Brown rice extraction gutter, 21 ... Brown rice channel, 2
2 ... mixed rice extraction gutter, 23 ... mixed rice channel, 24 ... mixed rice hopper, 25 ... paddy extraction gutter, 26 ... paddy channel, 27 ... paddying machine, 28 ... partition plate movement adjusting means, 29 ... partition Plate adjusting motor, 30 ... Rice / brown rice discrimination sensor, 31 ... Sensor moving means, 32 ... Sensor adjusting motor, 33 ... Partition plate origin switch (upward), 34 ... Partition plate origin switch (downward),
35: Sensor origin switch (upward swing), 36: Sensor origin switch (downward swing), 41: Control unit, 42: Main motor, 44: Load current sensor, 45: Operation switch, 46
... Rice / brown rice discrimination sensor Moving position detection sensor, 47 ... Slope angle detection sensor, 48 ... Slope angle adjustment motor, 49
... smoothing circuit, 50 ... comparator, 51 ... delay circuit.

Claims (1)

[Claims] An oscillating sorting device including an oscillating sorting plate and a brown rice partitioning plate, and a paddy / brown rice discrimination sensor for determining the boundary distribution position of the selected grain on the oscillating sorting plate. A brown rice partition plate partition position control means for detecting and moving the brown rice partition plate 18 to a relevant partition position; a rice / brown rice discrimination sensor moving position detecting means for detecting a movement position of the rice / brown rice discrimination sensor 30; A grain layer thickness detecting means capable of detecting the grain distribution layer thickness on the swing sorting plate 15 from the detection information of the paddy / brown rice discrimination sensor 30, and an unsuitable grain layer thickness by the grain layer thickness detecting means And a notifying means for notifying the detection of a non-suitable layer thickness. .