JPH0716620B2 - Removal control device for huller - Google Patents

Description

TECHNICAL FIELD The present invention relates to a removing control device for a huller.

[Prior art]

While detecting the load current value of the motor for driving the removing roll of the removing device, while controlling the opening and closing of the roll gap of the removing roll so as to maintain the detected load current value at the specified reference load current value, A load current control type automatic removing device that performs a pulling operation is known, and a padding rate sensor is used to detect paddy from the surfacing rice that has been removed by the removing device, and is calculated from this detection result. There is known a so-called removal rate control type automatic removal apparatus that performs removal operation while controlling the opening / closing of the roll gap of the removal roll so that the removal rate becomes a predetermined reference removal rate.

[Problems to be solved by the invention]

In a so-called removal rate control type automatic removal device that uses a removal rate sensor that distinguishes between paddy rice and brown rice, it is necessary that the paddy distinction criterion for distinguishing paddy from mixed rice is constant. Needless to say, if the mixed rice to be detected has changed in the paddy detection discrimination by the photosensor, for example, if the grain shape of the paddy, the dry state, the variety, etc. have changed significantly, According to the previous paddy discrimination criteria of the rate sensor,
There is a problem in that it is difficult to accurately discriminate the paddy. Moreover, such a change in the paddy occurs when the type of the paddy changes during the hulling work, or due to a change in the degree of dryness, etc., and the removal performance is easily influenced by the change.

This invention is a hulling machine that controls the opening and closing of the gap of the removing roll by the load current control and the removing rate control, and when the type of the paddy has changed during the removing operation, the removal rate is rationalized. The paddy discrimination reference information of the sensor is updated in order to make the removal work by the removal rate control efficient.

[Means for solving problems]

The present invention relates to a removal rate sensor 3, a removal rate control device 4, and a load control device 8 for detecting the removal rate of the spilled rice based on predetermined paddy discrimination reference information.
A hulling machine having: a removing operation stop detecting means for detecting an operation stop of the removing operation of the removing apparatus 2; and a removing operation of the removing operation stop detecting means after the removal operation of the removing apparatus 2 is detected. Of the removing operation restart detecting means for detecting restart of the removing operation, removing operation stop time detecting means for detecting that the removing operation stopped state of the removing device 2 has continued for a predetermined time, and the removing rate sensor 3 Paddy discrimination reference information updating means for updating paddy discrimination reference information, detection of the removal work suspension time detection means for a predetermined time or less in the removal operation suspension state, and restart of removal operation of the removal operation restart detection means In connection with detection, the removal rate control device 4
Related to the removal rate control device driving means for driving, the removal operation stop time detection means for continuously detecting the removal operation stopped state for a predetermined time, and the removal operation restart detection means for the removal operation restart detection. The load control device driving means for driving the load control device 8, the updating means operating means for operating the paddy discrimination reference information updating means, and the completion of updating the paddy discrimination reference information by the updating means operating means. Then, the removal rate control device drive starting means for switching the operation state of the removal rate control device 8 to the operation state of the removal rate control device 4, and the removal rate control device of the huller are configured.

[Operation of the invention]

For the hulling work, the dehulling roll 9 of the dehulling device 2 for removing the hulls of the paddy hopper 5,
It is done by supplying to 9. At the start of the removing operation, the reference removing load setting device 22 of the removing load control device 8 is adjusted to preset the removing rate of the scraped rice on the basis of the load current value. By adjusting the removal rate setting switch 11 of, the removal rate of the removed rice is set in advance.

Then, when the paddy supply shutter 7 is opened, the paddy is supplied to the removing rolls 9, 9 of the removing device 2 to be removed. At this time, when the dewetting load control device 8 is in operation, the load current sensor 21 detects the load current value of the dewetting roll 9, 9 drive motor, and this detected load current value is the reference dewetting load. When the removing operation is performed while the opening and closing of the roll gap between the removing rolls 9 is controlled so that the reference load current value set by the setter 22 is met, and the removing rate control device 4 is operating. Based on the predetermined paddy discrimination reference information of the removal rate sensor 3,
The removal rate is calculated by detecting and judging unhulled rice from the exfoliated rice removed by the removal apparatus 2, and the calculated removal rate is the reference removal rate set by the removal rate setting switch 11. As described above, the removing operation is performed while the opening / closing of the roll gap between the removing rollers 9 is controlled.

During such a removing operation, the paddy supply sensor 6 detects that the paddy in the paddy hopper 5 is exhausted, or the shutterer sensor 16 detects that the paddy supply shutter 7 is closed, and removes the padding device. When the removal work of No. 2 is detected, the timer 20 starts measuring time and it is detected whether or not a predetermined time has elapsed. When this stopped state is completed within a predetermined time, the paddy is supplied to the paddy hopper 5, the paddy supply shutter 7 is opened, and the paddy supply sensor 6 and the shutter sensor 16 detect them and restart the removal work. The removal operation is restarted in the operating state of the removal rate control device 4 before the removal operation is stopped. That is,
The paddy is discriminated based on the same paddy discrimination reference information as the previous time, the stripping rate sensor 3 calculates the stripping rate, and the stripping operation is performed by the stripping rate control.

However, if the paddy supply sensor 6 does not detect paddy even after the above-described predetermined time has elapsed, or if the paddy supply shutter 7 is closed and the removal operation continues, this predetermined time elapses. In connection with the subsequent paddy detection by the paddy supply sensor 6 and the work restart detection by the open detection of the paddy supply shutter 7 by the shutter sensor 16, the stripping load control device 8 operates and the stripping work is performed by the load current value control. Then, the load current value of the motor for driving the removing device 2 is compared with a preset reference load current value, and opening / closing control of the roll gap is performed so that the detected load current value follows the set reference load current value. The removal work is performed while being removed. During this time, the paddy discrimination reference information updating means is operated by the updating means operating means to update the paddy discrimination reference information of the shedding rate sensor 3. Then, when the update of the paddy discrimination reference information of the paddy discrimination reference information updating means is completed, the take-off rate control by the take-off rate control device 4 is started, and the take-off operation is performed by the take-off rate control.

〔The invention's effect〕

As described above, in the removal rate control by detecting the paddy rate of the removal rate sensor 3, there is no paddy in the paddy hopper 5, or
When the removing operation is stopped after the paddy supply shutter 7 is closed and the removing operation is started for a predetermined time or longer, the paddy discrimination reference information of the removing rate sensor 3 is updated. Since the removal rate control by the removal rate control device 4 is started, even if the type of the paddy supplied to the paddy hopper 5 changes during this period, even if the paddy discrimination reference information is changed. The dehulling rate control is performed based on the unhulled discrimination reference information according to the changed unhulled rice. Since control based on the load current value is performed by the control device 8, the removal control can be smoothly and accurately performed without interruption of the removal control for a long time.

〔Example〕

In the illustrated example, the removing device 2 includes a pair of left and right removing rolls 9,9.
And are driven to rotate in mutually opposite directions with a predetermined peripheral speed difference. In addition, by making the other deplacing roll 9 approach or separate from the one deplacing roll 9,
This is a configuration that allows adjustment and change of the removal rate of the surfacing rice, and this adjustment of the roll clearance involves adjusting the roll clearance adjustment handle 10 in the case of manual adjustment, and the removal rate in the case of automatic adjustment. By setting a reference value with the setting switch 11 and the reference dewetting load setting device 22, the dewetting rate control device 4 or the dewetting load control device 8, which will be described later, automatically operates.

The paddy hopper 5 is provided above the removing device 2, and by opening the paddy supply shutter 7 on the lower side, the paddy in the paddy hopper 5 is supplied between the removing rolls 9 and 9. The paddy hopper 5 is provided with a paddy supply sensor 6 for detecting the presence or absence of paddy.

The removal rate sensor 3 is composed of a photo sensor, and receives the supply of the removed rice removed by the removal device 2 and determines whether the paddy rice is brown or the unpolished rice. In the removal rate sensor 3, a paddy discrimination reference information updating means (not shown) is provided, which is operated by an updating means operating means (not shown) to update the paddy discrimination reference information. Only the peak value equal to or higher than the predetermined value of the voltage is averaged to determine the discrimination criterion of the paddy to be discriminated. The removal rate sensor 3 counts the number of grains detected as unhulled grains from the predetermined number of exfoliated rice, and calculates the ratio of the number of brown rice grains removed to the predetermined number of grains to obtain the removal rate. This is a configuration for calculating.

The removal rate control mechanism 14 compares the calculated removal rate of the removal rate sensor 3 with the removal rate set by the removal rate setting switch 11 by a comparator 15, and controls the removal rate by the comparison information. roll
The opening / closing control of the roll gap is performed by the control motor 12 so that the removal rate of the exfoliated rice removed in 9 and 9 follows the set removal rate.

The paddy supply shutter 7 of the paddy hopper 5 is provided with a shutter sensor 16 for detecting the opening / closing degree of the paddy supply shutter 7.
The paddy supply sensor 6 detects the presence of paddy in the paddy hopper 5,
Further, when the shutter sensor 16 detects the opening of the paddy supply shutter 7 and the start of the removing operation, the AND circuit 1
7, a detection signal is inputted to the comparator 15 via an AND circuit 18, and the paddy supply sensor 6 detects the absence of paddy in the paddy hopper 5 or the shutter sensor 16 Is configured to input a comparison signal to the comparator 15 via the OR circuit 19, the timer 20, and the AND circuit 18 when the closing of the paddy supply shutter 7 is detected and the removal work is stopped. .

The configuration of the removal load control device 8 includes a load current sensor 21, a reference removal load setter 22 for setting a reference load current value, a comparator 23,
It is composed of a removal load control mechanism 24, a control motor 12, and the like. The load current sensor 21 detects a load current value of a main motor (not shown) for driving the removing rolls 9 and 9, and the reference removing load setter 22 determines the removing rate of the removed rice. The comparator 23 compares the detected load current value at the time of decapsulation by the load current sensor 21 with the reference decapsulation load value. By inputting the comparison value from the comparator 23, the control motor 12
Is rotated forward and backward to control the opening and closing of the roll gap between the removing rolls 9 and 9 so that the ejected rice is controlled so as to follow the set reference removing rate.

The timed detection of the predetermined time of the timer 20 is input to the load current sensor 21 of the shedding load control device 8 and also to the shedding rate sensor 3. In connection with the continuous input to the removal rate sensor 3 for a predetermined time, the paddy detection of the paddy supply sensor 6, and the open detection of the paddy supply shutter 7 of the shutter sensor 16,
The paddy discrimination reference information updating means of the removal rate sensor 3 is operated via the updating means operating means to update the paddy discrimination reference information corresponding to new paddy.

During the operation of updating the paddy discrimination reference information, the load current sensor 21
The detected load current value of No. 1 is input to the comparator 23, the de-loading control device 8 is activated, and the de-rolling device is operated on the basis of the load current value.
Roll gap of 9,9 is adjusted. In connection with the end of the update operation of the paddy determination reference information of the shedding rate sensor 3, the control by the shedding load control device 8 is stopped and the control is switched to the control by the shedding rate control device 4.

25 is a wind-screening device for wind-screening the extruded rice, 26 is a separating device for separating and separating paddy rice and brown rice, and 27 is a screening device for extruding rice.
26 is a grain lifting machine, 28 is a grain lifting machine that sorts the returned paddy sorted by the sorting device 26 into the paddy hopper 5, 29 is a grain lifting machine that sorts the brown rice sorted by the sorting device 26 It is a fried machine.

Next, the operation will be described.

For the removing work, the paddy is fed to the paddy hopper 5 and the removing roll 9,9
Is driven by the main motor. In the removal rate control device 4, the reference removal rate information that serves as a control reference is set by the removal rate setting switch 11, and in the removal load control device 8, the reference removal load information that serves as a control reference is set. It

In this state, when the paddy supply shutter 7 is opened, the removing roll 9,
Paddy is supplied to 9 and removed, and the shutter sensor 1
6 is the load current sensor 2 by the open detection of the paddy supply shutter 7.
The load current value of the main motor at the time of removing action is detected by 1 and input to the comparator 23, which is compared with the reference load current value, and the removing load control mechanism 24 sends an opening / closing adjustment command signal to the control motor 12. Is output, and the roll gap control is performed so that the detected load current value is maintained at a predetermined removal rate along the reference load current value.

On the other hand, in the meantime, in the removal rate control device 4, the removal rate sensor 3
Detects the surging rice, the paddy discrimination reference information updating means is activated,
The detection voltage of paddy is changed to the one that is suitable for the extruded rice from which the paddy judgment reference information is removed. In connection with the end of the determination of the new paddy discrimination reference information, the removal current load-based reference removal load control by the removal load control device 8 is stopped, and the removal ratio control by the removal ratio control device 4 is started. To be done.

In the control by the removal rate control device 4, the removal rate sensor 3 discriminates the paddy based on the new paddy discrimination reference information, and the ratio of the paddy to the brown rice in the predetermined grain number or the brown rice in the predetermined grain number. Is calculated to calculate the removal rate. The calculated removal rate and the reference removal rate are compared by the comparator 15, and the removal rate control mechanism 14 outputs an opening / closing command signal for the roll gap to drive the control motor 12 forward and backward to calculate the removal rate. The gap between the removing rolls 9 and 9 is controlled so that the rate corresponds to the standard removing rate.

During the hulling operation, when the paddy supply sensor 6 detects that the paddy hopper 5 is unpadded, or the shutter sensor 16 detects that the paddy supply shutter 7 is closed and the center of the stripping work is detected, the timer is set. 20 starts timing operation. This timer 20
The paddy supply sensor 6 detects the paddy and the shutter sensor 16 detects the paddy within the predetermined time from the start of the timing operation of the paddle supply shutter 7.
Is detected, and restart of removal work is detected,
The removal rate sensor 3 detects the unhulling reference information during the previous removal operation, and the detection information of the removal rate sensor 3 is used by the comparator 15.
Is input to the control motor 12 from the removal rate control device 4, and the clearance control of the removal rolls 9, 9 is started based on the removal rate reference.

If the paddy detection of the paddy supply sensor 6 and the open detection of the paddy supply shutter 7 by the shutter sensor 16 are not performed within the predetermined time, the paddy detection by the paddy supply sensor 6 and the paddy supply shutter by the shutter sensor 16 are performed thereafter. 7
When the restart of the work is detected by the open detection, the removing operation is started on the basis of the load current value by the removing load control device 8 as during the initial operation start, and the removing rate sensor 3
The paddy discriminating standard information updating means is operated to update the paddy discriminating standard information based on the new paddy rice, and when this is finished, the control of the shedding load control device 8 to the control of the shedding rate control device 4 is performed. Then, the removal rate control is performed again.

The mechanism for updating the new paddy discrimination reference information of the removal rate sensor 3 calculates the removal rate by simply detecting the removal rate of the removal rate sensor 3 and is shown in FIG. As shown by the line, the paddy discrimination reference information updating means has a separate and independent structure. It may be provided. In this case, if the paddy sensor 1 is provided in the paddy hopper 5, in order to detect the paddy supplied to the paddy hopper 5, a new supply paddy is provided without waiting for the removing operation by the removing device 2. Since the paddy discrimination reference information is obtained, the operation time of load control can be shortened.

[Brief description of drawings]

The drawings show the embodiments of the present invention. FIG. 1 is a block circuit diagram and FIG. 2 is a front view. Explanation of code 1 …… Rice sensor 2 …… Stripping device 3 …… Stripping rate sensor 4 …… Stripping rate control device 5 …… Rice hopper 6 …… Rice feeding sensor 7 …… Rice feeding shutter 8 …… Release Load control device 9 …… Remove roll 10 …… Roll clearance adjusting handle 11 …… Remove rate setting switch 12 …… Control motor 13 …… Update device 14 …… Remove rate control mechanism 15 …… Comparator 16… … Shutter sensor 17 …… and circuit 18 …… and circuit 19 …… OR circuit 20 …… timer 21 …… load current sensor 22 …… reference depletion load setter 23 …… comparator 24 …… depletion load control mechanism 25 …… Wind sorting device 26 …… Sorting device 27 …… Frying machine 28 …… Frying machine 29 …… Frying machine

Claims (1)

[Claims] 1. A removing device 2 based on predetermined paddy discrimination reference information.
The dewetting rate sensor 3 that detects the dewetting rate of the rice that has slid out from the dewetting rolls 9, 9 and the calculated dewetting rate that is obtained by detecting the rice that has come out by the dewetting rate sensor 3 and Calculated by comparing the set depletion rate with the set depletion rate so that the depletion rate becomes the set depletion rate 9,9
The removal rate control device 4 for controlling the roll gap of the device and the detected load current value of the drive motor of the removal device 2 are compared with a preset reference load current value, and the detected load current value is set as a reference value. Roll to remove the load current 9,9
Control device 8 for controlling the roll gap of the removing device, a removing operation stop detecting means for detecting the removal operation stop of the removing device 2, and an removing operation stop detection of the removing device 2 of the removing operation stop detecting means. A removing operation resuming detection means for detecting a restart of the removing operation afterwards, a removing operation stop time detecting means capable of detecting that the removing operation stopped state of the removing device 2 continues for a predetermined time, and the removing rate Paddy discrimination reference information updating means for updating the paddy discrimination reference information of the sensor 3, detection of the removal work suspension time detection means for a predetermined time or less in the removal operation stop state, and removal of the removal work restart detection means. In connection with the detection of the resumption of the work, the removal rate control device 4
Related to the removal rate control device driving means for driving, the removal operation stop time detection means for continuously detecting the removal operation stopped state for a predetermined time, and the removal operation restart detection means for the removal operation restart detection. The load control device driving means for driving the load control device 8, the updating means operating means for operating the paddy discrimination reference information updating means, and the completion of updating the paddy discrimination reference information by the updating means operating means. And a removal rate control device drive starting means for switching the operation state of the removal load control device 8 to the operation state of the removal rate control device 4, and a removal rate control device for a hulling machine.