JPH0753241B2 - Huller - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a hulling machine provided with an adjusting means for adjusting a clearance of derolling.

[Prior Art] When the hulling operation is interrupted, the load current value of the derolling drive motor stored before the operation interruption is used as a reference load current value, and the load current of the drive motor measured after the operation is restarted. A technique for adjusting the derolling gap so that the value reaches the control reference load current value is considered.

[Problems to be Solved by the Present Invention] However, in such a configuration, since it is possible to quickly obtain a removal rate close to the set removal rate, it is possible to improve the efficiency of the hulling work. Even when the set dehulling rate or hulling work efficiency is changed when the work is restarted, the derolling gap is adjusted using the load current value before work interruption as the control reference load current value. It may take time to become.

Therefore, the present invention eliminates such drawbacks, and when the work efficiency is changed when the hulling work is restarted after the hulling work is interrupted, the derolling gap that matches the changed hulling work efficiency is obtained. It is intended to be adjusted quickly.

[Means for Solving Problems] The present invention relates to load current value detecting means for detecting the load current value of the driving motor 24 for the hulling rolls 6, 6, and work efficiency adjustment for adjusting and setting the hulling work efficiency. Means, a set escape rate adjusting means for adjusting and setting a set escape rate, and a detected load current value storage determining means for determining whether or not the previously detected load current value of the load current value detecting means is stored, Reference load current value calculating means for calculating a correction reference load current value based on the work efficiency information from the work efficiency adjusting means and / or the setting removal rate information from the set removal rate adjusting means, and the correction reference from the load current value detected last time. Reference load current value correcting means for changing to the load current value, and the corrected reference load current value and the detected load current value of the load current value detecting means are compared and calculated, and the gap adjusting means for the derolling 6, 6 is performed. Control command signal to And rice sliding machine structure comprising a de-roller gap control command signal output means for.

[Operation] When the suspended hulling work is restarted, if the load current value of the drive motor 24 for the derolling rolls 6, 6 detected before the work interruption is stored, the work efficiency and / or the set desorption rate are stored. When is adjusted, the above information is fetched into the calculation control unit, the correction reference load current value is calculated, and the reference load current value is changed to the correction reference load current value. Then, the detected load current value information of the drive motor 24 output by the load current value detection means is fetched, and when this detected load current value is larger than the corrected reference load current value, the clearance between the derolling rollers 6, 6 is set. "Open"
Control signal is output, and if the detected load current value is smaller than the corrected reference load current value, the derolling 6,6
The control signal that closes the gap of the
Adjust the gap of 6.

[Effect] When the hulling work is restarted and the hulling work efficiency and / or the set removal rate are changed, the load current value control is performed based on the corrected reference load current value that has been corrected. , The control accuracy is improved and the work efficiency is improved.

[Embodiment] An embodiment of the present invention will be specifically described below with reference to the drawings.

First, the configuration will be described. At the upper part of the hulling machine 1, a mixed rice sorter 3 equipped with a removing device 2 and a cylindrical rotary sorter having a large number of depressions on its inner peripheral surface is provided.
A wind selecting device 4 is provided at the lower part of the machine body. Further, the removing device 2 is provided with the removing rolls 6, 6 which rotate in the arrow direction in the casing 5. Then, of the derolling rolls 6, 6, one derolling roll A is constructed so as to move by being installed over an intermediate portion of the movable plate 7 whose lower portion is pivotally attached, as shown in FIG. A screw portion 9 formed at one end portion of the adjusting shaft 8 is screw-fitted to the upper end portion of the movable plate 7.
A pin 10 is inserted into and fastened to the other end of the adjusting shaft 8, and a rotating case 11 rotatably provided in the case is provided on the outer periphery of the other end of the adjusting shaft 8 provided with the pin 10. Both ends of the pin 10 are engaged with ribs 12 formed on the inner surface of the rotating case 11 so as to be aligned with each other. Then, the adjusting drive gear 15 is fixed to the side end of the rotating case 11 with a screw, and the motor gear 14 on the geared motor 13 side is meshed with the adjusting drive gear 15. Reference numeral 16 is a restriction bolt that restricts the movement of the rotating case 11 in the thrust direction.

With this configuration, when the geared motor 13 rotates, the rotary case 11 rotates via the motor gear 14 and the adjustment drive gear 15, and the rib 12 and the pin 1 of the rotary case 7 rotate.
The adjusting shaft 8 rotates through 0. When the geared motor 13 rotates in the forward direction, the upper part of the movable plate 7 rotates in the direction of the arrow A around the pivot portion, and the derolling A on one moving side and the derolling 6 on the other fixed side. The gap between
On the contrary, when the geared motor 13 is rotated in the reverse direction, the movable plate 7 and the derolling A rotate in the direction opposite to the arrow A direction to narrow the gap between the derolling units 6, 6.

Further, a paddy hopper 17 is provided above the casing 5, and a grain sensor 18 for detecting that the amount of grains has fallen below a predetermined amount is provided below the paddy hopper 17. In addition, a paddy / rice discriminating device 19 is provided on the outer wall of the wind separating device 4 to take in sample grains from the scraped rice detreated by the derolling rolls 6 and discriminate between paddy and brown rice. The paddy / rice discrimination device 19 includes a photo sensor (not shown) including a light emitting element and a light receiving element.

Reference numeral 20 denotes a shutter provided between the roll removing units 6 and 6 and the paddy hopper 17, and a shutter sensor 21 (a limit switch in the embodiment) that detects opening / closing of the shutter 20 is provided near the shutter. 22 is a mixed rice thrower that supplies the scraped rice to the mixed rice sorter 3, 23 is a brown rice thrower that lifts the finished rice sorted by the mixed rice sorter 3, and 24 is a wind sorter 4
It is a drive source (in the embodiment, a motor) that is installed in the rear part of the vehicle and drives the rotating parts of the machine body.

Further, the shutter 20 and the derolling member 6 in the casing 5 are
A rotatable rotary shaft 26 is provided between the rotary shaft 26 and the rotary shaft 26.
A control valve 25 for adjusting the grain supply amount is attached to 6.
One end of the rotary shaft 26 is projected to the outside of the casing 5,
Attach the gear 27 to this protruding part, mesh this gear 27 with the gear 28 on the potentiometer 29 side, and
The open / close degree of the control valve 25 is detected by. In addition, in this embodiment, the position of the control valve 25 is changed as the work efficiency adjusting means, but it may be configured to adjust the grain supply amount to the mixed rice sorting device 3 and the finished rice recovery amount. Often,
It is not limited to the configuration of this embodiment.

Next, the block circuit of FIG. 3 will be described. 30 is a memory (not shown) that stores data, control programs, etc.
An arithmetic control unit (hereinafter, referred to as a CPU) of a microcomputer (not shown) provided with performs a comparison operation and an arithmetic logic operation. The information input to the CPU 30 is the set removal rate information selected by the removal rate setting device 31, and the paddy / rice discrimination device input via the input interface 32.
Paddy / rice discrimination information from 19, motor from current transformer (CT) 33
There are 24 load current value information and work efficiency information input from the potentiometer 29. As the control command signal output from the CPU 30, an open / close control command signal for opening / closing the gap between the rolls 6 and 6 by rotating the geared motor 13 in the normal or reverse direction, and a solenoid (not shown) for opening / closing the shutter 20. There is an opening / closing operation command signal to (No.).

Next, the control function of the CPU 30 will be described.

Before discriminating between paddy and rice, a reference voltage for discrimination (for example, one having a voltage of 70% or more of the highest measured voltage is defined as paddy, and one less than that is defined as brown rice) is set.

It takes in the identification information of paddy / brown rice and compares it with the reference voltage to determine whether it is paddy or rice.

Take in the setting removal rate information set by the removal rate setting device 31 and the work efficiency information selected by the work efficiency adjusting means,
Calculate the reference load current value.

Next, using the flowcharts of FIGS. 4 and 5 together,
The control operation of the CPU 30 will be described.

First, when the shutter 20 is opened by the opening operation command signal from the CPU 30 to the solenoid (not shown), the paddy hopper 17 is opened.
The paddy in the inside is supplied to the derolling rolls 6 and 6 to be detreated, and the scraped rice is wind-selected by the wind-screening device 4. Next, the mixed rice of unhulled rice and brown rice is fried in the mixed rice thrower 22 and conveyed to the selection start end side of the mixed rice selection device 3 through an appropriate conveying means to be subjected to the selection action. Next, finish rice is brown rice Slowa 23
Although the fried grains are discharged to the outside of the machine by the above, the mixed rice containing a large amount of paddy is again sent to the de-apparatus 2 side through appropriate means (not shown).

In such a hulling / sorting operation, the CPU 30 receives the detection information from the paddy / rice discriminating device 19 and calculates it to determine whether it is paddy or unpolished rice. Then, when the determined data reaches a predetermined number, the CPU 30 calculates the removal rate (step 10).
At the same time, the set removal rate preset by the removal rate setting unit 31 and the measured removal rate are compared and calculated, and it is determined whether or not the removal roll gap is adjusted (step 20). When the CPU 30 determines that the derolling clearance needs to be adjusted, it outputs a "forward" or "reverse" drive command signal to the geared motor 13 to adjust the derolling clearance (step 3).
0). When the CPU 30 determines that the adjustment of the derolling clearance is “not necessary”, the load current value information (LM) of the motor 24 output from the CT 33 is captured and stored (step 40),
Next, the work efficiency is measured from the detection information of the potentiometer 29 (step 50).

Next, a case where the suspended hulling and sorting work is restarted will be described. First, the presence or absence of load current value (LM) data of the motor 24 at the time of suspension of hulling work is determined (step 60),
When it is judged that there is data, the set withdrawal rate information set by the withdrawal rate setter 31 is read (step 70). Next,
The detection information from the potentiometer 29 is fetched, the work efficiency is measured (step 80), and the reference load current value (LM ') is calculated from the work efficiency information and the set loss rate information (step 90). Therefore, even if the set removal rate and / or the work efficiency is changed when the work is restarted, the step
The load current value of the motor 24 measured and stored at 40 can be automatically corrected, and an accurate reference load current value (LM ') can be obtained.

Next, the CPU 30 outputs a drive command signal of "forward rotation" or "reverse rotation" to the geared motor 13 to perform initial adjustment of the roll gap (step 100), and then an operation command signal to a solenoid (not shown). Is output, the shutter 20 is opened (step 110), and the reference load current value (LM ') is set (step 130). When the CPU 30 determines that the load current value of the motor 24 and the reference load current value (LM ′) input from the CT 33 are larger than the reference load current value (LM ′), the CPU 30 outputs a forward drive command signal to the geared motor 13, and vice versa. If it is determined to be small, a reverse drive command signal is output to the geared motor 13 to perform load control for automatically adjusting the roll gap between the rolls 6 and 6 (step 130). After that, CPU30
When the measured loss rate calculated from the detection information from the rice discriminating device 19 and the set loss rate set by the loss rate setting device 31 are compared and calculated, and it is determined that this measured loss rate is larger than the set loss rate, the geared A forward rotation drive command signal is output to the motor 13, and conversely, when it is judged to be small, a reverse rotation drive command signal is output to the geared motor 13 to automatically adjust the roll gap between the rolls 6 and 6 for removal rate control. (Step 14
0).

Then, in step 60, when it is determined that there is no load current value data for the motor 24, the initial setting of the derolling 6, 6 gap and the reference load current value (L ₀ ) of the motor 24 serving as a reference are set. (Step 150).

Therefore, even if either or both of the work efficiency and the set loss rate are changed when the hulling work is restarted, the motor 24
Since the reference load current value of is automatically corrected,
Work efficiency is improved.

[Brief description of drawings]

The drawings show an embodiment of the present invention.
The drawing is a side view of the huller, FIG. 2 is a side sectional view of the removing device, FIG. 3 is a block circuit diagram, and FIGS. 4 and 5 are flowcharts. 1 ... Hulling machine 2 ... Removing device 3 ... Mixed rice sorting device 4 ... Wind selecting device 5 ... Casing 6 ... Roll removing 7 ... Movable plate 8 ... Adjusting shaft 9 ... Screw part 10 ... … Pin 11 …… Rotating case 12 …… Rib 13 …… Geared motor 14 …… Motor gear 15 …… Adjusting drive gear 16 …… Regulating bolt 17 …… Rice hopper 18 …… Glen sensor 19 …… Rice / Brown rice discrimination device 20 …… Shutter 21 …… Shatter sensor 22 …… Mixed rice slower 23 …… Brown rice slower 24 …… Drive source (motor) 25 …… Control valve 26 …… Rotating shaft 27 …… Gear 28 …… Gear 29 …… Potentiometer 30 …… Computation control unit 31 …… Desorption rate setting device 32 …… Input interface 33 …… Current transformer (CT)

Claims (1)

[Claims] 1. A load current value detecting means for detecting a load current value of a motor 24 for driving the hulling rolls 6, 6, a work efficiency adjusting means for adjusting and setting the hulling work efficiency, and a setting removal rate. Setting removal rate adjusting means, detection load current value memory determining means for determining whether or not the load current value previously detected by the load current value detecting means is stored, and work efficiency information from the work efficiency adjusting means. And / or a reference load current value calculating means for calculating a corrected reference load current value based on the set escape rate information from the set escape rate adjusting means, and a reference load current for changing the previously detected load current value to a corrected reference load current value. Derolling means for comparing and calculating the corrected reference load current value and the detected load current value of the load current value detecting means and outputting a control command signal to the gap adjusting means of the derolling means 6, 6. Gap control command signal Rice huller comprising a force means.