JPS5919554A - Controller for gluten removing rate of rice huller - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention is attached to a PA for a dehulling rate control device of a rice huller.

In the hulling machine, it is necessary to maintain the dehulling rate of the scraped rice at a desired value, and today, a dehulling control device for this purpose has been proposed and commercialized. The control is l
] Based on the fact that if the load of the t2 rod roll drive motor during deweighing is constant, the dehulling rate of dropped rice can be maintained almost constant, the standard load that gives the desired dehulling rate is adjusted and set in advance. Is there any explanation for the standard load? $ Control the gap between the culling rolls so that the loads on the roll drive motors are almost the same.
This is done by The standard t1 load adjustment setting is IIR1 in 01 at the roll gap that gives the desired demolition rate.
This is done by manual dial adjustment to approximately match the load on the 10-wheel drive motor. By the way, at the start of work, the load on the deculling roll drive motor is unstable and unstable, due to the fact that the idler collar associated with the control valve that controls the amount of paddy supplied to the deculling rolls is empty. Get to a stable state quickly. Therefore, fine adjustment is required each time there is a load change in the die 1 full adjustment for standard load adjustment setting.
There was a problem in that the standard load setting operation was not easy.

Accordingly, the present invention aims to improve the above-mentioned drawbacks of the prior art.The object of the present invention is to provide an all demixing rate control device that automatically sets the standard load. A further feature of the present invention is that it is equipped with a standard load setting means (1) that can adjust and set the output level, and the output level of the means is set by the dehulling roll drive during shedding at a roll gap that provides a desired dehulling rate. In a dehulling rate control device for a rice huller that performs automatic control υ11, the adjustment setting output level is set to almost match the load of the J motor, and the output level is set as a reference load. = A motor (RM) is connected in relation to the adjustment setting of the output level of the load setting means (1), and the output level of the connected resistance setting means and the detected load of the weighing device (1) are adjusted. There is also an M semi-load automatic setting means (2) for automatically setting the reference load by controlling the motor (RM) of the reference load setting means in accordance with the comparison with the reference load setting means in accordance with the comparison with the reference load setting means. The present invention will be explained in detail from the drawings below.

FIG. 1 shows an embodiment of the weighing rate control device according to the present invention, showing an automatic weighing rate control system, an automatic reference load setting system, and an automatic/manual changeover switch 3 on the right.

The automatic control system for the unweighing rate is designed to match the detected load of the unbalanced roll drive Tanabata with the desired theory (a standard 0 range that allows the Y rate to be determined) so that the two almost match (this 1). Load detection means for detecting the load of the drive motor 4. Reference load setting means for changing the reference load 1. Control circuit for comparing the detected load and reference load 5. Control An inter-part delay is added to the output of the circuit 5, and a delay circuit for preventing jitter in the loop gap control <68, 6b),
After receiving the output of the delay circuit and according to the comparison result, the drive relay (R1, R2) of the clearance adjustment motor is set to R1111.
It has an output circuit 7 for

The load detection means 4 detects the load of the []-le drive motor using, for example, a Karen 1 to 1 Herance, amplifies and smoothes the detected load, and outputs it at the C level.

Criteria @ visit setting means 1 is to escape with the desired l1I2 rate (1 of A)
j (The output level is adjusted and set so as to almost match the load of the two-scale roll drive motor, so as shown in FIG. 2, the output level can be adjusted and set using the amplification variable resistor 102. 101 to the right, amplification factor variable resistor 102
is subjected to automatic adjustment by the reference load automatic setting system described later. Premise C for adjusting and setting the reference load Achieving a certain desired weighing rate is based on the roll gap adjustment system mechanically related to the m2110-roll. [not shown] equipped with a motor and a manual handle] = manually performed by operating the manual handle of the gap adjustment 15 mechanism.Amplifier 101 outputting a reference load.
In addition to the reference voltage 103, we also wish to use a control voltage (-C) for supplying paddy to the de-scaling [l-ru] in response to load fluctuations in the roll drive motor due to changes in the opening of the control valve (not shown). The output of the clamp circuit 10/I and the valve opening sense 105 is
! I can get it. That is, as shown in Fig. 3, the relationship between the amount of paddy supplied to the straw l1lf70-ru and the load of the []-ru drive motor is independent of the valve opening, for example, from 2 to 85 during unweighing, as shown in Fig. 3.
When obtaining % polished rice, there is a parabolic proportional relationship, and the load increases as the valve opening increases. Therefore, if the reference load is set based only on the reference voltage 103, it will not be possible to maintain the culling rate constant against changes in the valve opening. The line of 85% of the batting rate is shown by the dashed line in the figure and is approximated by a straight line, so that the amplified output is placed on the line of the desired batting average regardless of the valve opening. The opening of the Jj valve is sensed by associating the control valve with the control valve.

The control circuit 5] compares the base W load and the detected load and provides a drive output to the output circuit 7 when the detected load is outside a predetermined range according to the reference (1). Operation to relay 1?-1 Now.According to the output of output circuit 7 kl 1lill tin circuit 5], normal rotation relay 1< 1 or reversing relay 1 and 2. Note that the display means 8 indicates that the output of the control circuit 5 is zero, that is, the detected load of the call drive motor is approximately equal to the reference load. When they are equal, the analogy is 'IFD'
give an indication.

On the other hand, the standard β load automatic setting system is a system in which the amplification factor variable resistor 102 of the base tl setting means 1 is varied by the motor so that the output level of the amplifier 101 follows the load of the roll drive motor that inclines the desired demolition rate. Here, the reference load automatic setting means 2, the motor mechanism 9 (FIG. 6) for varying the amplification factor variable resistor 102, and the driving means for driving the variable resistance adjusting motor RM of the mechanism 9 in forward or reverse rotation are shown.

The reference load automatic setting means 2 determines the output level of the setting means 1 based on the comparison between the load of the load detection means 4 and the output level of the reference load setting means when giving the desired demolition rate. As shown in FIG. 4, a pair of comparators (201a, 201
1)) and a delay circuit inserted into each comparator output (2)
02a.

202b) and transistors (Tr1, l-r2) that operate according to the output of each comparator. Each comparator (201a, 201b > is the output of the reference load setting means 1) is input with opposite polarity, and as the other input, the load of the detection means 4 is input to the comparator 201a, and the partial pressure value of the negative part is input to the comparator 201b. input. Therefore, the base L\the output level of the negative load determining means 1 is
, the output level of the load detection means 4 is Y, and its partial pressure value is Y'
In other words, as shown in FIG. 5, depending on the difference between the output level of the setting means 1 and the output level of the detection means 4, the comparator 201a or 201b provides an operational output. The output of each Nigon valet is connected to a delay circuit (20
2a, 202b) are applied to the transistor 11 or Tr2. The one-herald transistor output is applied to the driving means of the variable resistance regulator Rfvl.

The drive means for the motor RM has a relay (R3, R/l) that drives the upper and lower wheels in forward or reverse rotation (variable resistance pressure regulation according to the output of the automatic reference load setting means 2). Alternatively, the opening/closing of the reverse switch (SWl, 5W2) is controlled to give the desired demolition rate. [1--The output level of the reference load setting means 1 is not allowed to follow the load of the pawl drive motor.

The motor mechanism having the variable resistance adjusting motor RM is, for example, as shown in FIG. 11 is configured to be rotatably driven by a small DC motor RM via a gear A1 connection.

The automatic/manual changeover switch 3 is used to switch between automatic and manual control of the culling rate. When in the automatic state (C1 and J3), the output of the reference Ω load automatic setting means 2 is suppressed, while in the manual state, the automatic control of the culling rate is controlled. The output of the output circuit 7 of the system is suppressed.

When setting the reference load with the above configuration, the desired III
J If the roll gap that gives the rod ratio is set by operating the manual handle of the roll gap adjustment mechanism (not shown), and the demolition roll drive motor is demolding at the roll gap, the automatic/manual changeover switch 3 is set to manual. By being placed in this state, the reference load will be automatically set. The reference load setting by the reference load automatic setting means 2 is displayed by the unweighing rate OK display means 8, so the load of the n's 1% roll drive motor is stabilized and the reference load is set, and the automatic/manual operation is performed at the point of 1=. If changeover switch 3 is set to automatic state, yen KJ/
It is possible to immediately start automatic control of the removal rate.

As explained above, according to the present invention, it is possible to provide a decoupling rate control device that automates the setting of the reference load and eliminates the troublesome adjustment of the reference angle vJ.

[Brief explanation of the drawing]

FIG. 1 shows a hundred and one embodiment of the f7 rate control I system according to the present invention.
Figure 2 shows a specific example of the standard load setting means shown in Figure 1.
Figure 3 (Relationship diagram between the load of the J roll drive motor and the control i11 valve, Figure 4 is a specific example of the M semi-load automatic setting means in Figure 1, Figure 5 is the same as in Figure 4) Operation of the comparator Explanatory diagram, No. 6
The figure shows an example of the configuration of a variable resistance adjustment motor mechanism. 1...Reference load setting means 2...Base i%jj square load own initial load automatic setting means...Variable resistance adjustment motor Fig. 4/2 Fig. 6 Fig. 5

Claims (1)

[Claims] A reference load setting means capable of adjusting and setting an output level is provided, and the output level of the means is adjusted so as to approximately match the load of the de-lining roll drive motor during de-hulling at a roll gap that provides a desired de-hulling rate. In a dehulling rate control device for a rice huller that automatically controls the dehulling rate by setting the adjusted output level as a reference load, a motor is connected in relation to the output level adjustment setting of the reference load setting means, Another reference load automatic setting means controls the motor of the reference load setting means and automatically sets the reference load according to a comparison between the output level of the reference load setting means and the lateral load of the culling roll drive motor.
This is a dehulling rate control device for a paddy rice harvesting machine.