JPH0815564B2 - Removal device for hulling machine - Google Patents

Description

TECHNICAL FIELD The present invention relates to a decontrolling device for a hulling machine that separates and removes paddy from brown rice and rice husks by a pair of derolling.

"Prior Art" Conventionally, JP-A-59-193148 or JP-A-61-18
As disclosed in Japanese Patent No. 5341, there is a technique in which a current sensor that detects a load current of a hulling motor that drives a derolling and a voltage sensor that detects a voltage change of the hulling motor are provided.

[Problems to be Solved by the Invention] In the above-mentioned related art, the current sensor value can be corrected or the automatic control can be stopped at the time of voltage drop, but the relative relationship data between the current and the voltage detected by each sensor is initially input. However, there is a drawback in that the initial setting operation cannot be easily simplified and it is not possible to easily adapt it to any model with the same circuit due to a difference in characteristics of the hulling motor.

"Means for Solving the Problem" Therefore, the present invention provides a hulling machine provided with a current sensor that detects a load current of a hulling motor that drives a derolling roller and a voltage sensor that detects a voltage change of the hulling motor. In the de-control device, the means for sequentially storing the detection values of the current and voltage sensors detected at regular intervals, and the change state of the removal rate from the detection values of the current and voltage sensors and the stored detection values are detected. The controller is provided with a means for doing so.

[Operation] Therefore, it is possible to properly detect the change in the hulling load without being substantially affected by the voltage fluctuation, and to detect the loss rate change from the detected value of each sensor and the stored detected value. As a result, almost no input of correlation data between current and voltage or initial adjustment is required, which simplifies the control circuit configuration and the handling operation, and is the same regardless of differences in the hulling motor characteristics. The control circuit can be easily used for different models, and the manufacturing cost can be easily reduced.

[Examples] Examples of the present invention will be described in detail below with reference to the drawings. First
FIG. 3 is a control circuit diagram using current and voltage sensors, FIG. 2 is an overall view of a huller, and FIG. 3 is a sectional view thereof. In the figure, (1) is a paddy hull, (2) is a supply hopper for loading paddy,
(3) and (4) are a pair of derolling rollers that are provided opposite to the lower part of the hopper (2), (5) is a shutter that opens and closes the lower part of the hopper (2), and (6) is each roll (3) (4). Is a deployment lever for emergency opening by manual operation, and (7) is a removal rate motor for adjusting contact and separation of the rolls (3) and (4).

In the figure, (8) is a wind-selecting section on which the hulling section (1) is mounted, and removes small rice from brown rice removing gutter (9) and brown rice conveyor (10) and brown rice falling on the gutter (9). Karato (11)
And the derolling rolls (3) (4) through the small rice pick-up gutter (12) and the small rice conveyor (13) that carry the small rice out of the machine, and the grain scattering plate (14) and the flow grain plate (15). Sliding-off rice removal gutter (16) and sliding-off rice conveyor (17) facing down and receiving scraped-off rice (brown rice and paddy); A rice porridge conveyor (19) and a dust suction and exhaust fan (20) for discharging the rice husks separated from the scraped rice to the outside of the machine.

Further, (21) in the figure is a sorting section placed on the wind selecting section (8) and arranged in parallel with the hulling section (1), and as shown in FIG. Upper and lower sorting cylinders (22) and (23) for separating rice and paddy, and bearing rolls (24) that support the cylinders (22) and (23) rotatably, respectively (25) ...
And a mixed rice supply tank (26) provided outside one end of the upper selection cylinder (22), a supply conveyor (27), a re-graining conveyor (28) and a brown rice receiving conveyor (29) inserted in the upper selection cylinder (22). ), A brown rice receiving conveyor (30) inserted in the lower sorting cylinder (23), a rice sorting machine (31) provided between the upper and lower brown rice receiving conveyors (29) (30) and connected in series, and an upper portion. The chute (32) for communicating the paddy discharge end of the sorting cylinder (22) with the hopper (2) and the re-graining conveyor (28) are connected to the lower sorting cylinder (23).
To the rice picking gutter (16) by sliding down the mixed rice discharge end of the lower sorting tube (23) to the rice picking gutter (16), and the brown rice receiving conveyor (30) to the brown rice picking gutter (9). ) Is connected to the chute (35).

Then, a brown rice lifting conveyor (36) for communicating the lower end side with the brown rice conveyor (10) and the scraped rice conveyor (1
The sorting rice lifting conveyor (37), which communicates the lower end side to 7), is erected along the outside of this machine, and the upper end of the sorting rice lifting conveyor (37) is connected to the supply tank (26). The pipe (38) communicates with each other, and the scraped rice from the paddy hull (1) and the return mixed rice from the sorting cylinder (23) are combined and put into the supply tank (26). .

Further, a hulling motor (39) for driving the hulling part (1), the wind selecting part (8) and the sorting part (21) is provided, and the rolls (3) and (4) are removed by the hulling motor (39). It is configured to drive.

As shown in FIG. 1, the derolling rolls (3) and (4) are arranged in a hulling case (43) communicating with the paddy discharge port (40) of the supply hopper (2). (41)
The derolling rolls (3) and (4) axially supported on (42) face each other, and the transmission gears (44) and (45) are attached to the support shafts (41) and (42).
And a gear case (46) is provided in the hulling case (41), and the gears (44) (45) are internally provided in the case (46). Further, drive gears (49) (50) are axially supported in the case (46) through the power shafts (47) (48),
The gears (44) (45) and (49) (50) are constantly meshed with each other, and the support shaft (42) of one of the derolling rolls (4) is axially supported in the middle of the gap adjusting link (51), and the link is formed. (51)
One end is supported on the same core as the one power shaft (48).
A clearance adjusting shaft (54) interlockingly coupled to the removal ratio motor (7) via gears (52) (53) is provided, and the shaft (() is attached to the other end of the link (51) via a bearing member (55). 54) The screw gap (54a) at one end is screwed and connected, and the roll gap (56) of each roll (3) (4) into which the paddy is put in is automatically enlarged or reduced by controlling the motor (7) in the forward and reverse directions. In addition, a removal rate adjusting handle (57) is attached to the other end of the shaft (54), and the roll gap (56) is manually enlarged or reduced by rotating the handle (57).

Further, below the paddy discharge port (40), a paddy flow rate adjusting valve (58) which is a supply valve for adjusting the paddy flow rate, and the roll (3).
A feeding roll (59) for supplying paddy to (4) is provided, the opening degree of the control valve (58) is adjusted by an adjusting bolt (60), and the opening state of the valve (58) is detected by a potentiometer. (61) is configured.

As shown in FIG. 1, a current sensor (62) such as a current transformer for detecting the load current of the hulling motor (39) is provided, and the current sensor (62) proportional to the change in the driving load of the derolling rolls (3), (4) is provided. The current sensor (62) detects the current change of the power supply (R, S, T) of the motor (39), and the current sensor (62) detects the change of the removal rate due to the change of the roll gap (56) of the derolling (3) and (4). 62)
The load current output is detected.

The control circuit (64) including a voltage sensor (63) for detecting a change in the power source (R, S, T) voltage of the hulling motor (39), and having a timer function, is connected to each sensor (64). 62) (63) is connected to the input, and the control circuit (64) is connected to the output of an alarm device (66) including a buzzer and an indicator via the drive circuit (65). The dehulling machine is provided with a current sensor (62) that detects a load current of the hulling motor (39) that drives (4) and a voltage sensor (63) that detects a voltage change of the hulling motor (39). In the control device, means for sequentially storing the detection values of the current and voltage sensors (62) (63) detected at regular intervals, and the detection values of the current and voltage sensors (62) (63) are stored. The controller is a means to detect the change state of the withdrawal rate from the detected value. Is provided in the control circuit (64).

This embodiment is constructed as described above, and the sixth embodiment will be described below.
The operation will be described with reference to the flowchart of the drawing and the sensor output diagram of FIG. When the roll gap (56) is set in the initial stage and the hulling work is started, the current value (A) and the voltage value (V) detected by the current sensor (62) and the voltage sensor (63) are stored in the control circuit (64). those will be programmed for a certain time (T) is input successively stored for each, a program that the currently input voltage value during the course of (V _a) and the same voltage value (V _a) is inputted before that If it is in the data, the current value (A _b ) this time and the previous current value (A _a ) before that are compared, and the difference (X ₁ ) between the elapsed time up to this time (T _b ) and the previous time is Jose the difference of the elapsed time _{(T a) (Y 1)} , the amount of decrease in the current value per time _{(ΔA) (ΔA = X 1} / Y 1) is calculated.

This reduction amount per hour of the current value (.DELTA.A) by hulling work start time from the current time (T _b) to a current value of the reduction amount of _{(A) (ΔA × T b} ) is calculated, its value is the reference or At this time, the alarm device (66) is activated. When the above standard is exceeded, the derolling rolls (3) and (4) are closed by the control motor so that the set current value (A _o ) (voltage value (V _o )) at the start of hulling work is reached. It is controlled.

On the other hand, if the same value as the voltage value (V _a ) at the current measurement time (T _b ) is not in the previous data and there are other voltage values (V _b ) before each other, the previous and next current values (A _c ) (A _d ) is compared, and the difference (X ₂ ) is divided by the difference (Y ₂ ) of each elapsed time (T _d ) (T _c ). (Δ
A) (ΔA = X ₂ / Y ₂ ) is calculated.

 The table below shows an example of this program.

That is, as shown in the above table, the control circuit (64) is provided with sensors (62) (6) at fixed time intervals (t ₁ , t ₂ , ...).
3) voltage values (V ₁ , V ₂ , ...) and current values (A ₁ , A ₂ ,
...) in which is gradually being read and stored, in the example now time t ₃ between the current value A ₂ at time t _2, the current value A ₃ is the same voltage value V _2, also t ₄ or Also in the case of the current value A ₄ or A ₅ of t ₅ , the reduction amount (ΔA) of the current value (A) per time is calculated with the current value A ₂ of time t ₂ . In this case, the previous data to be compared uses a value that is closest to the sliding start time in order to eliminate the error, and now, for example, at time t ₅ , the amount of decrease in current value per hour. So, the current amount decrease meter from the beginning Is calculated. On the other hand, voltage value (V ₁ ) at time t ₆ or t ₇
Is changed, the amount of decrease (ΔA) in the current value per time between the current value A ₁ and the current value A ₆ or A _{7 at} the time t ₁ of the same voltage value (V ₁ ) stored previously Is calculated, and when there is no data before that time, the work is continued based on the reduction amount before that time. That is, in the case of the time t ₁₁ , the current value decrease amount (ΔA) per time is calculated between the current values A ₁₀ and A ₂ at the times t ₁₀ and t ₂ which are the same voltage value V ₂ before each other. The amount of decrease in the current value from the beginning of the next Is calculated. In this case, therefore, the de-stated state is detected by the change of the current value (A) between the same voltage value (V), so that the change of the current value (A) due to the change of the voltage value (V) is eliminated and the malfunction occurs. It can be prevented.

Further, even when the opening of the normal valve (58) is kept constant, the actual supply amount slightly changes depending on the dryness degree of the paddy and the kind, and the driving load of the derolling (3) (4) also changes accordingly. However, even in such a state, the error can be suppressed to the minimum and the accurate value can be detected by being based on the program data every time (T) elapses.

In this way, the drive load associated with the wear of the derolling rolls (3) and (4) can be detected mainly based on the stored program data of the current value (A) and the voltage value (V) that are input every time the time (T) elapses. However, the work is performed while a new program is created each time the hulling work is started, and the respective programs are created in accordance with various work modes.

"Effects of the Invention" As is apparent from the above-described embodiments, the present invention provides a current sensor (62) for detecting a load current of a hulling motor (39) that drives the derolling rolls (3) and (4), and the hulling device. In a de-controlling device for a huller, which is provided with a voltage sensor (63) for detecting a voltage change of a motor (39), the detected values of the current and voltage sensors (62) (63) detected at regular intervals are sequentially stored. The controller (64) is provided with a means and a means for detecting the change state of the removal rate from the detected values of the current and voltage sensors (62) and (63) and the stored detected values. It is possible to properly detect the change in the hulling load without being affected, and to detect the rate of change in the removal rate from the detection values stored in the sensors (62) (63) and the stored detection values. Almost no need to input correlation data or initial adjustment It is easy to simplify the road structure and the handling operation. Also, regardless of the difference in characteristics of the hulling motor (39), it can be easily used for different models with the same control circuit, reducing manufacturing costs, etc. Can be easily achieved.

[Brief description of drawings]

FIG. 1 is a control circuit diagram showing an embodiment of the present invention, FIG. 2 is an overall view of a huller, FIG. 3 is a front view of the same section, FIG. 4 is a side view of the same section, and FIG. FIG. 6 is an enlarged sectional view of the sliding portion, FIG. 6 is a flowchart, and FIG. 7 is an output diagram of the sensor. (3) (4) ... Roll removal (39) ... Hulling motor (62) ... Current sensor (63) ... Voltage sensor (64) ... Control circuit (controller)

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Mitsuaki Nakazawa 428 Enami, Okayama City, Okayama Prefecture Seirei Industry Co., Ltd. (56) References JP 59-193148 (JP, A) JP 61-185341 ( JP, A)

Claims (1)

[Claims] 1. A current sensor (62) for detecting a load current of a hulling motor (39) for driving a derolling (3) (4),
In a de-controlling device for a hulling machine, which is provided with a voltage sensor (63) for detecting a voltage change of the hulling motor (39), the detection values of the current and voltage sensors (62) (63) detected at regular intervals are The controller (64) is provided with means for sequentially storing and means for detecting the change state of the withdrawal rate from the detected values of the current and voltage sensors (62) (63) and the stored detected values. Dehulling device for huller.