JPH11226511A - Partition plate controller for shaking sorter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To upgrade the accuracy of controlling the partition plate of a shaking sorter. SOLUTION: When a unhulled rice feed sensor detects the stoppage of supplying grains to a shaking and sorting plate during a shaking and sorting operation, the operation is switched to a residual grain processing step at the time of ending the operation and a flag for inhibiting the calculation of an unhulled rice and hulled rice identification reference value of a unhulled rice and hulled rice identification sensor is set to stop the recalculation of the unhulled rice and hulled rice identification reference value. Next, a hulled rice partition plate is moved to a reference partitioning position during processing the residue, a partitioning control is executed while moving the hulled rice partition plate to a related partitioning position according to a specified reference based on the detection of a boundary position between the unhulled rice and the hulled rice by the unhulled rice and hulled rice sensor. After that, a flag for inhibiting the calculation of this unhulled rice and hulled rice identification voltage value is reset when a residual grain processing operation is ended. Thus the operation to recalculate the unhulled rice and hulled rice identification reference value by the unhulled rice and hulled rice identification sensor is stopped during the residual grain processing operation. Consequently, the unhulled rice is prevented from being mixed with the hulled rice and thereby, the partitioning accuracy of controlling the hulled rice partition plate can be enhanced.

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 partition plate control device of a swing sorting device.

[0002]

2. Description of the Related Art A device for detecting a boundary between rice and brown rice on a swing sorting plate with a rice / brown rice discrimination sensor and automatically moving the brown rice partition plate to a partition position related to the boundary detection position between rice and brown rice. Is known.

[0003]

During the operation of the rocking sorting device, a change in the measurement distance of the sensor due to the adjustment of the lateral inclination angle of the rocking sorting plate, dirt on the detection surface of the rice / brown rice discrimination sensor, etc. Therefore, the voltage value is detected again at regular time intervals or when a predetermined adjustment is made during normal work, and a reference value for discriminating between rice and brown rice is calculated.

[0004] However, the calculation of the discrimination reference value requires a predetermined time. If the supply of the grains to the rocking sorter plate is stopped at the end of the work, the sortable grains on the plate surface decrease and move upward. It takes about one minute from the start of the movement to the end. If the discrimination reference value is calculated during this time, there is a problem that the rice is mixed with brown rice and the reference value cannot be calculated accurately. In view of the above, the present invention is intended to stop the recalculation of the reference value of rice / brown rice discrimination by the rice / brown rice discrimination sensor at the time of residual grain processing at the end of the work, and to improve the accuracy of brown rice partition plate control.

[0005]

The present invention takes the following technical measures in order to solve such problems. That is, the present invention relates to a rocking sorter having a rocking sorter plate 15 and a brown rice partitioning plate 18, and a paddy / brown rice discriminating sensor 30 for detecting the boundary distribution position of the paddy / brown rice on the rocking sorter plate 15, to detect brown rice. Brown rice partition plate partition position control means for moving and adjusting the partition plate 18 to an associated partition position, work end detecting means for detecting a shift from the end of the normal operation of the swing sorting apparatus to the residual grain processing step, The rice / brown rice discrimination reference value calculation means for recalculating the rice / brown rice discrimination reference value of the rice / brown rice discrimination sensor 30 which operates during normal operation of the brown rice partition plate partition position control means, and the normal work end of the work end detection means And a reference value calculation stopping means for stopping the operation of the rice / brown rice discrimination reference value calculating means in connection with the detection.

[0006]

During the swing sorting operation, for example, the paddy supply sensor detects that the supply of the grain to the swing sorting plate 15 has been stopped, and the process proceeds to the residual grain processing step at the end of the work.
Set the paddy / brown rice discrimination reference value calculation prohibition flag of 0,
Stop recalculation of paddy / brown rice discrimination reference value.

Next, the brown rice partition plate 18 is moved to a reference partition position for the residual treatment, and then the rice / brown rice discrimination sensor 30
Based on the detection of the boundary between rice and brown rice, the partition control is executed while moving the brown rice partition plate 18 to the relevant partition position according to a predetermined standard, and at the end of the residual grain processing work, the rice / brown rice discrimination voltage value Reset the calculation prohibition flag.

[0008]

As described above, according to the present invention, when the operation shifts to the residual grain processing operation, the recalculation of the rice / brown rice discrimination reference value of the rice / brown rice discrimination sensor 30 is stopped. At the time of the separation of the brown rice partition plate, it is possible to prevent the mixing of the paddy into the brown rice and improve the accuracy.

[0009]

Embodiments of the present invention shown in the drawings will be described below. First, the overall configuration of the hulling sorter will be described with reference to FIGS. The hulling sorter is
Rice hulling unit 1, Sliced rice wind selection unit that wind-selects rice from the rice hulling unit 1, Swing sorting unit that separates and sorts mixed rice after wind selection into rice and brown rice 3, Mixed rice fried Machine 4, brown rice fryer 5, etc.

The hulling unit 1 includes a hulling hopper 6, a hulling roll 7,
7 comprises a hulling room 8 and the like. The sliding rice style selection unit 2 includes a sliding rice style selection box 9, a sliding 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 unit 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 has a higher supply side 15.
a, the other side opposite to the lower discharge side 15b, one side in the horizontal direction is a high swinging side 15c, and the other side is a low swinging side 15d, and the tilting plate 15 is inclined in both the vertical and horizontal directions. In this configuration, the swing selection plate 15 is reciprocally swung 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, and the like.
Rice with a large specific gravity compared to brown rice has a drift distribution on the lower side 15d, and non-separated mixed rice of unmixed rice and brown rice has a drift distribution in the middle, and these grains are oscillated and sorted. Fifteen
Is separated by a brown rice partition plate 18 and a paddy partition plate 19 provided opposite to the discharge side 15b.

The extracted brown rice is taken out of the machine through a brown rice take-out gutter 20, a brown rice channel 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.

[0013] The partitioning plate adjusting plate 28 is disposed opposite to the discharge side of the swinging separating plate 15 and is composed of a screw rod. When the table 29 is rotated in the forward and reverse directions, it reciprocates in the lateral direction. The partition plate origin switch (upward) 33 and the partition plate origin switch (upward and downward) are located at the uppermost swinging position and the lowermost swinging position. Side) 34 is provided.

Above the discharge side 15b of the swinging sorting plate 15,
A rice / brown rice discrimination sensor 30 is arranged, and the rice / brown rice discrimination sensor 30 is movably supported in a lateral direction by a sensor moving means 31 composed of a screw bar. 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 for detecting the movement of the rice / brown rice sensor 30 to the lowermost position. A switch (swinging side) 36 is provided.

The rice / brown rice discrimination sensor 30 has the following configuration 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. The reference wavelength band reflected by the bandpass filter is sent to the detection element for the reference wavelength band via the filter, converted into a voltage value, and sent to the control unit 41. Thus, the configuration is such that the control unit 41 calculates the ratio of the two detected voltage values, and determines the classification of paddy and brown rice based on a predetermined reference value.

As shown in FIG. 3, the control unit 41 having a built-in CPU includes a rice / brown rice discrimination sensor 30, a partition plate origin switch (upward swinging) 33, and a partition plate origin switch (upward swinging).
4, a sensor origin switch (upward swing) 35, a sensor origin switch (upward swing) 36, a load current sensor 44 for detecting a load current value of the main motor 42, and an operation switch 45 are connected via an input interface. doing.

The control unit 41 includes a partition adjusting motor 29, a sensor adjusting motor 32, and a main motor 42 via an output interface (not shown) and a driving circuit.
Each one is connected. Next, the content of brown rice partition plate control by the control unit 41 will be described. When this control is started, the paddy / 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 for 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 swung upward 15c.
(Or the lower side 15d) while moving a predetermined distance
The operation of detecting the boundary of brown rice is continued, and the position where the number of detected rice grains reaches the control reference value is set as the detection position of the distribution boundary of rice and brown rice.
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 the brown rice out of the machine.

Next, the automatic operation control of the hulling sorter will be described with reference to FIG. The control contents will be described based on the flow of FIG. When the present control is started, for example, it is determined whether or not the process has shifted to the residual kernel processing at the end of the work, based on whether or not the paddy / brown rice discrimination sensor 30 has continuously moved upward for a predetermined time or number of times. Then, when the rice / brown rice discrimination sensor 30 moves to the swinging side continuously for a predetermined period of time, it is determined that the process is to shift to the residual kernel processing step.

Next, the process proceeds to the control for moving the position of the residual grain processing partition of the brown rice partition plate 18, and the process of moving the position of the brown rice partition plate 18 to the set position of the residual grain processing. 18 moves upward from the partition position during normal operation to determine whether or not it has reached the residual processing setting partition position, and when the movement to the residual grain processing setting partition position is completed, then the rice / brown rice discrimination is performed. The sensor 30 measures the paddy / brown rice distribution boundary detection status, determines whether or not the sensor has moved to a predetermined residual processing reference position, and moves to the residual processing reference position, shifts to brown rice partition plate partition control, Brown rice divider 18
It is determined whether or not has moved to the partition plate origin position (upward swinging) (determined by turning on the partition plate original position switch (upward swinging) 33). 42 is stopped and the hulling sorting operation is stopped.

The position where the brown rice partition plate 18 is to be subjected to the residual treatment is set, for example, as follows. Based on a predetermined calculation formula (y = ax + b, y is the partition position of the brown rice partition plate 18, a and b are constants, and x is the rice / brown rice boundary detection position of the rice / brown rice discrimination sensor 30), the normal of the brown rice partition plate 18 is used. The remaining grain processing setting partition position is set to be above the partition position of the above, and a position where the paddy rice is not mixed into the brown rice even in a small amount of grain distribution at the time of the residual grain processing is set as the partition position.

When the brown rice partitioning plate 18 is moved to the partition plate origin position (upward) in the residual kernel processing step under the control as described above, the drive of the main motor 42 is stopped. Regardless of the lateral inclination angle of 15, the amount of brown rice remaining in the machine can be reduced, and the number of times the grain is circulated in the machine can be reduced. Driving can be prevented and labor can be saved.

In the above-described embodiment, the residual grain processing step (the suspension of the grain supply to the hulling unit 1 is detected by the rice supply sensor (the sensor detects the suspension of the grain supply to the swing sorting plate 15) At this time, the continuous movement of the distributed grains on the swinging sorting plate 15 to the swinging side may be detected by the paddy / brown rice discrimination sensor 30.) When the process proceeds to the residual grain processing step, the paddy / brown rice discrimination sensor 30 It is good also as a structure which does not calculate the paddy / brown rice discriminating reference value.

The detection voltage value of the paddy / brown rice discrimination sensor 30 changes due to a change in the detection distance due to a change in the lateral inclination angle of the swinging selection plate 15 or a stain on the detection surface of the paddy / brown rice discrimination sensor 30. For this reason, at the time of work, a voltage value is detected by a sensor every predetermined time, and a reference value for discriminating between rice and brown rice is calculated.
However, the calculation of the determination reference value takes a predetermined time (for example, 20
Seconds), the supply of grains to the oscillating sorter plate is stopped, and the number of sorted grains is reduced. It takes about one minute from the start to the end of the movement of the grains to the swinging side. When the reference value is calculated, there is a problem that unpolished rice is mixed in the brown rice and the calculation cannot be performed accurately.

As shown in the control flow of FIG. 5, when the process proceeds to the residual kernel processing step, the
The calculation prohibition flag of the brown rice determination voltage value is set, and the brown rice partition plate 18 is moved to the reference partition position at the time of the residual processing. Next, the movement position of the rice / brown rice discrimination sensor 30 and the brown rice partition plate 18
It is determined whether or not the partition position matches, and if they match,
As in the above-described embodiment, the partitioning of the brown rice partition plate 18 is controlled according to the normal partitioning control standard, and then, the calculation prohibition flag of the rice / brown rice discrimination voltage value is reset.

As described above, when the process shifts to the residual grain processing step, the control of the partitioning of the brown rice partition plate 18 is performed without calculating the reference value for determining the rice / brown rice by the rice / brown rice distinguishing sensor 30.
The grain remaining in the machine can be reduced while preventing paddy from being mixed into brown rice. Next, the embodiment shown in FIG. 6 will be described. In this embodiment, in the residual grain processing control of the swing sorting type hulling sorter, the grains on the swing sorting plate 15 move to the swinging upper side during the partitioning control of the brown rice partition plate 18, and the brown rice partition plate 18 is moved. When the position of the partition plate origin switch (rotating side) 33 is reached, the brown rice switching valve (not shown) is switched to the outside take-out state, and an automatic operation for taking out the grains circulating in the machine outside the machine is attempted. Things.

The control contents will be described with reference to the flow of FIG. When this control is started, for example, it is determined whether or not the process has shifted to the residual kernel processing at the end of the work, based on whether or not the paddy / brown rice discrimination sensor 30 has continuously moved upward for a predetermined time. If it is determined to shift to the residual grain processing, the brown rice switching valve (not shown) is switched from the outside take-out state to the in-machine circulation side, and the circulated grains are returned to the hulling unit 1 to start the hulling.

Next, the process shifts to the control for moving the remaining grain processing partition position of the brown rice partition plate 18, and moves the brown rice partition plate 18 to the residual processing setting partition position which is deviated upward from the partition position during normal operation. Next, the boundary distribution position of the paddy / brown rice is measured by the paddy / brown rice discrimination sensor 30, and, based on the paddy / brown rice boundary position of the sensor and the partition position of the brown rice partition plate 18, for example, the predetermined calculation formula (y = ax + b) is used. It is determined whether or not it is at the relevant position, and if they are the same, normal brown rice partition plate control is executed.

Next, it is determined whether or not the brown rice partition plate 18 has moved to the partition plate origin position (upward swing). When the brown rice partition plate 18 has moved to the partition plate original position (upward swing), the brown rice switching valve (not shown) is circulated in the machine. The state is switched from the state to the outside take-out state, the outside take-out of the circulated grains is started, and then the timer function is set, and it is determined whether or not the time is up. When it is determined that the removal is completed, the brown rice switching valve (not shown) is switched to the in-machine circulation side to prepare for the next work start state.

[0029] By adding such a function of removing kernels from the machine to the control of the processing of the remaining kernels, it becomes possible to perform a fully automatic operation in which the kernels remaining in the machine are eliminated, and immediately after the unmanned operation, the next hulling is performed. Sorting work becomes possible, and work efficiency can be improved. Next, an embodiment shown in FIG. 7 will be described. This embodiment detects that the supply of grain to the hulling rolls 7, 7 has been stopped in the hulling sorter having the partition control function of the brown rice partition plate 18 and the gap control function of the hulling rolls 7, 7. Then, when the grain / brown rice discrimination sensor 30 reaches a predetermined swing-up position in accordance with the movement of the grains on the swing sorter 15 to the swing-up side, the hulling unit 1
It is determined that the reduced kernels have disappeared, the roll gap control of the hulling rolls 7 and 7 is stopped, and the roll gap is adjusted to a predetermined gap to prevent the hulling rolls 7 and 7 from coming into contact with each other. Things.

In the conventional apparatus, after detecting the absence of the paddy in the paddy hopper 6 (the closing of the paddy supply control valve may be detected),
After a lapse of a predetermined time, the opening adjustment for preventing the contact of the hulling rolls 7, 7 is performed. However, depending on the grain moisture and the lateral inclination angle of the oscillating sorting plate 15, there is a long or short time until there is no reduced grain from the oscillating sorting plate 15 to the hulling rolls 7,7. There are grains that are reduced to
There was a problem that the opening of the roll gap was not adjusted even though the opening of the roll gap was adjusted or there was no reduced grain. This embodiment is intended to solve such a problem.

The control will be described with reference to FIG. When this control is started, whether or not the grains in the paddy hopper 6 are gone is detected by a paddy sensor (not shown), and when the absence of grains is detected, the paddy / brown rice boundary sensor 30 detects the grain / brown rice boundary distribution. The position is measured, and it is determined whether or not the boundary measurement position has moved to the set reference position.
The opening adjustment for contact prevention of 7 is executed.

The set reference position is, for example, as shown in FIG. 7 (1), for example, the grains on the swing sorting plate 15 decrease and move to the upper side, and the grains are distributed to the lower side. In the state where it has stopped, the paddy / brown rice boundary detection position of the paddy / brown rice discrimination sensor 30 is experimentally confirmed, and a predetermined distance L from the uppermost rocking position is determined.
Set to a position deviated downward. As described above, since the roll gap opening adjustment for preventing the contact of the hulling rolls 7 is started based on the distribution state of the grains on the swinging sorting plate 15, the timing of the contact prevention becomes appropriate, and Damage to the sliding rolls 7, 7 can be accurately prevented.

Next, another embodiment for preventing the contact of the hulling rolls 7, 7 will be described with reference to FIG. When this control is started, it is detected by the paddy sensor (not shown) whether or not the grains in the paddy hopper 6 have run out, and when the absence of the grains is detected, the swing sorting plate is detected by the lateral inclination angle sensor (not shown). 15 is detected, and then the partitioning position of the brown rice partitioning plate 18 is measured. The time until the grain returned to the sliding rolls 7, 7 is exhausted is selected (a method of calculating with a predetermined calculation formula may be used). Next, a timer function is set to start timekeeping, and when the time is up, a roll gap opening adjustment for preventing contact of the hulling rolls 7, 7 is output for a predetermined time.

The time is determined based on, for example, the following criteria. At the end of the work, the grains on the swing sorting plate 15 decrease, and the grains move to the upper side and do not distribute the grains on the lower side, and the grains are transferred from the swing sorting plate 15 to the hulling rolls 7. At the time when the reduction is stopped, the horizontal inclination angle of the swing sorting plate 15 and the partition position of the brown rice partition plate 18 (or the detection position of the boundary between the rice and brown rice by the rice / brown rice discrimination sensor 30) are important factors. In other words, as shown in FIG. 8 (1), there is a relationship in which the smaller the lateral inclination angle is, the faster the reduced grains are eliminated, and the earlier the partition position of the brown rice partition plate 1 is located on the swinging side, the sooner the reduced grain becomes. In this case, as shown in the graph, a reference line is created for each lateral inclination angle with reference to experimental values, and the time at which the reduced kernels disappear is selected and determined from the above-mentioned data.

As described above, the start of the roll gap opening adjustment for preventing the contact of the hulling rolls 7, 7 is determined based on the lateral inclination angle of the swing sorting plate 15 and the distribution state of the grains on the plate. Therefore, the timing of the contact prevention adjustment is made appropriate, and damage to the hulling rolls 7 can be accurately prevented.

[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 flowchart.

FIG. 6 is a flowchart.

FIG. 7 is a flowchart.

FIG. 8 is a flowchart.

[Explanation of symbols]

1 ... rice hulling part, 2 ... rice falling rice style selection part, 3 ... rocking sorting part, 4 ...
Mixed rice fryer, 5 ... Brown rice fryer, 6 ... Rice hopper, 7 ... Rice hulling roll, 8 ... Rice hulling room, 9 ... Rice crushed rice selection box, 10 ... Rice crushed rice selection path, 11 ... Pity trough, 12: sliding rice trough, 13: suction fan, 14: dust cylinder, 15: swing sorting plate, 16: distribution supply gutter, 17: distribution case, 18: brown rice partition plate, 19
... Rice partition plate, 20 ... Brown rice extraction gutter, 21 ... Brown rice channel, 22
... 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 adjustment motor,
30 ... Rice / brown rice discrimination sensor, 31 ... Sensor moving means, 3
2 ... Sensor adjustment 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.

Claims (1)

[Claims] An oscillating sorting device having an oscillating sorting plate and a brown rice partitioning plate, and a rice / brown rice discriminating sensor detecting a boundary distribution position of rice and brown rice on the oscillating sorting plate for brown rice partitioning. Brown rice partitioning plate partitioning position control means for moving and adjusting the plate 18 to an associated partitioning position; operation completion detecting means for detecting a transition from the end of the normal operation of the rocking sorter to the residual kernel processing step; A paddle / brown rice discrimination reference value calculating unit that recalculates a paddy / brown rice discrimination reference value of the paddy / brown rice discrimination sensor 30 that is operated during a normal operation of the partition plate partitioning position control unit, and a normal work end detection of the work end detection unit. And a reference value calculation stopping means for stopping the operation of the rice / brown rice discrimination reference value calculating means in relation to the above.