JPH0815561B2 - Saw accuracy switching device for rice mill - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rice milling machine in which the detection accuracy is controlled so as to approach a set value, and the grinding accuracy is automatically controlled.

2. Description of the Related Art Brown rice introduced into a rice polishing machine is subjected to whitening treatment between a net inside a whitening cylinder and a whitening roll which is rotationally driven. In order to automatically control the lapping accuracy, conventionally, as shown in FIG. 4, a current detector 2 is provided in a power supply circuit of a motor 1 for driving a whitening roll, and a target value Ir and a detection value Is of the current detector 2 are set. Is compared by the comparator 3 to detect an error, and the rice milling machine main body 4 is controlled by the output of the comparator 3 so that the detection value Is approaches the target value Ir, and the grinding accuracy is automatically controlled.

Specifically, a resistance plate at the white rice outlet of the white polishing cylinder is pressed, and the resistance plate is urged by a spring in the opening closing direction. When the internal pressure of the whitening cylinder rises and exceeds the biasing force of the spring, the resistance plate opens and the whitened rice that has been whitening processed is discharged from the white rice outlet. The output of the comparator 3 automatically adjusts the spring pressure of the spring to control the pouring accuracy.

In the past, target values corresponding to "whiteness", "whiteness", "seven minutes", and "fifths" of biting precision were preset in the _first to fourth setting sections 5 _{1 to} 5 ₄ When the user wants to have a high accuracy, the user operates the upper white switch 7 ₁ of the operation panel 6 to supply the set value of the _first setting unit 5 _{1 to} the comparator 3 as a target value. When switching to pearling degree of "superfine" from "white", when operating the white switch 7 _2, the second setting portion 5 ₂ of set value is supplied as a target value to the comparator 3. Here is the first
~ Switch for selecting the output of the 4th setting section 5 ₁ ~ 5 ₄ 7 ₁ ~ 7 ₄
Uses a self-holding one-point selection pushbutton switch that works in conjunction with each other.

SUMMARY OF THE INVENTION In such a conventional configuration, by operating any of the switches 7 _{1 to} 7 ₄ can be selected by the user the precision of grinding, or even if the whitening processing is performed by operating the switch. Depending on the product type, there is a problem that the desired biting precision may not be achieved, or a process that obtains the biting precision between the set biting precisions cannot be performed. To correct this, the first to fourth setting sections 5 _{1 to} 5 ₄
It is necessary to perform a special circuit operation for changing the internal set value of, and it is not possible to deal with it only by the operation from the operation panel 6.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a hammering accuracy switching device that can correct the hammering accuracy only by an operation from an operation panel, or can call the modified hammering accuracy arbitrarily and use it.

Means for Solving the Problems In the rice milling accuracy switching device of the present invention, in a rice polishing machine in which the detection accuracy is controlled to approach a set value and the grinding accuracy is automatically controlled, the detection value becomes smaller as the detection value becomes larger. Setting value changing means for changing the control target value so as to move in any direction, memory means for storing the detection value at the time of detecting a registration instruction, and detection value written in the memory means Is provided as a target value.

The milling precision switching device according to claim 2, wherein a torque sensor is provided in a power transmission path from the motor to the whitening roll, and the electric power control of the motor is executed so that the detected torque of the torque sensor approaches a control target torque. In step 3, set value varying means for changing the target torque value so that the target torque value moves so as to move in an arbitrary direction among a direction in which the detected torque value increases and a direction in which the detected torque value decreases. And a switching means for outputting the detected torque value written in the memory means as a target torque value.

Operation According to this configuration, when the set value varying means is operated so that brown rice of desired roasting accuracy comes out and registration is instructed when the desired roasting accuracy is reached, the detected value at that time is written in the memory means. . When the output switching means is instructed to read, the written detection value is output as the target value.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 to 3. Note that components having the same functions as those in FIG. 4 showing the conventional example are denoted by the same reference numerals and described.

FIG. 1 shows a rice milling machine equipped with the milling precision switching device of the present invention. A torque sensor 8 is provided between the whitening roll built in the rice polishing machine body 4 and the motor 1 for driving the whitening roll.
Is interposed. The target torque value Tr and the detected torque value Ts of the torque sensor 8 are compared by the comparator 3 to detect an error,
The output of the comparator 3 controls the rice milling machine body 4 to detect the detected torque value.
The accuracy is automatically controlled so that Ts approaches the target torque value Tr.

The target torque value Tr is given from the grinding accuracy switching device 9 as follows. On the operation panel 6, as shown in FIG. 3, "standard torque value""set value 1""set value 2""set value 3"
In addition to the switches 10 ₀ , 10 ₁ , 10 ₂ and 10 ₃ for selecting
11 and the switches 12 _H , 12 _L and 13 are received. Comparator 3
The above-described switches, the first to third memories M1 to M3, and the standard setting unit 15 are connected to the control unit 14 that outputs the target torque value Tr to be supplied to.

The configuration of the control unit 14 will be described based on the flowchart shown in FIG.

When the rice polishing machine is started, the control unit 14 outputs the standard torque value T _ro set in the standard setting unit 15 to the comparator 3 in step [a-1]. In step [a-2], the switches 12 _H and 12 _L marked "high" and "low" on the key top are checked. If not operated, the step [a-
3] is skipped, the process returns to step [a-1] through steps [a-4] and [a-5], and the rice milling machine body 4 is operated with a rolling accuracy according to the standard torque value T _ro .

When the operation is detected in step [a-2], if the detected one is the switch 12 _H , the corrected torque value ΔT determined according to the operation duration is set to the standard torque value T in step [a-3]. _The target torque value is (T _ro + ΔT) added to _ro
It is supplied to the comparator 3 as Tr. If what is detected in step [a-2] is the switch 12 _L , the corrected torque value ΔT determined according to the operation duration is subtracted from the standard torque value T _ro in step [a-3] (T _ro −ΔT ) Is supplied to the comparator 3 as the target torque value Tr. Switch like this
By operating 12 _H and 12 _L , the milling accuracy of the rice milling machine body 4 is changed from the degree according to the standard torque value T _ro set in the standard setting unit 15 to (T _ro + ΔT) or (T _ro −ΔT). The user can arbitrarily change the operation according to the degree. Step [a-4] In the switch 10 _{0 -} 10 _3, 13 it is checked whether it has been operated, if it does not detect the operation returns to the step [a-1] through steps [a-5].

When the grinding accuracy of the white rice discharged from the rice milling machine body 4 reaches the first target grinding accuracy by operating the switch 12 _H or 12 _L , the switch 13 marked “Register” on the key top and the “Setting” When operated 1 "and filled-in switches 10 simultaneously _1, step [a-4] in is determined that there is registration step [a-6], which was detected by the [a-7] in step [a-4] There determines which one of the switches 10 _{0 -} 10 _3. Here, the operated switch 10 ₁ is "Setting 1".
Since it has been decided as, step [a-8]
Is executed and the detected torque value Ts at that time is stored in the first memory M1.
, And the content read from the first memory M1 is supplied to the comparator 3 as a target torque value in step [a-9]. Similarly, when the switch 10 ₂ is operated at the same time as the switch 13 when it is determined in step [a-4] that there is registration, steps [a-7] are followed by steps [a-10] and [a-10]. -11] to execute the second memory M2,
The detected torque value Ts at that time is written, and the content read from the second memory M2 is supplied to the comparator 3 as the target torque value. When the switch 10 ₃ is operated simultaneously with the switch 13, the step [a-7] is followed by the steps [a-12] and [a-13] to execute the third memory M3.
Then, the detected torque value Ts at that time is written, and the content read from the third memory M3 is supplied to the comparator 3 as the target torque value.

In this way, after writing the target torque value according to the appropriate accuracy in the first to third memories M1 to M3, the switch
By operating 10 ₁ to 10 _{3 the} target torque value
It is switched to the value written in the third memories M1 to M3. By selecting the switches 10 ₀ may be returned to the standard output value set the target torque value to the standard setting section 15.

Specifically, without operating the switch 13, the switches 10 ₀ to 1
0 when ₃ of either operating alone, through step [a-4] is discriminated whether any of the switches in step [a-5], when the switch 10 ₁ is the instruction in step [a-14] It is read that the content of is a switch to "setting 1", and in step [a-15], the target torque value is written in the first memory M1 based on the content read in step [a-14]. Switch to the value
-4].

When the switches 10 ₂ and 10 ₃ are individually operated, the target torque value is similarly set to the second and third memories M2 and M2 in step [a-15].
Switch to the value written in M3 and proceed to step [a-
Return to 4]. Step When the switch 10 ₀ is operated alone [a-4] is a standard value set the target torque value to the standard setting section 15 in step [a-1] through steps [a-5] Switch to. In each case, the magnitude of the detected torque value at that time is indicated by a bar on the display unit 11.

In the above embodiment, the torque sensor 8 is provided to control the rice milling machine main body 4, but this is the same as the conventional one.
The same can be applied to the type using. However, if the torque sensor 8 is provided to control the rice milling machine body 4, stable operation can be expected without being affected by fluctuations in the power supply voltage.

In the above-described embodiment, the steps [a-2] and [a-3] of the control unit 14 change the control target value so as to move in any direction of the detection value increasing direction and the detection value decreasing direction. The set value varying means is configured to include first to third memories
Steps [a-8], [a-10] of M1 to M3 and the control unit 14,
The step [a-5], [a-14], [a-15] of the control section 14 constitutes memory means for storing the detection value at that time when [a-12] detects the registration instruction. , But constitutes an output switching means for outputting the detection value written in the memory means as a target value.

EFFECTS OF THE INVENTION As described above, according to the present invention, in a rice polishing machine in which the detection value is controlled so as to approach a set value, and the lapping accuracy is automatically controlled, the detection value can be increased or decreased. Set value changing means for changing the control target value so as to move in any direction, memory means for storing the detection value at the time of detecting the registration instruction, and detection value written in the memory means. Since the output switching means for outputting the target value is provided, if the user operates the set value varying means so that the brown rice with the desired bowling accuracy comes out, and the user himself registers the desired bowling accuracy. The target value can be arbitrarily switched to the registered value by operating the output switching means, and the operating portion of the set value varying means and the operating portion of the output switching means provided on the operating panel can be operated according to the type of whitening processing. Just do Thus, the processing state with the desired ladle accuracy can be obtained each time with a one-touch operation.

[Brief description of drawings]

FIG. 1 is a block diagram of an embodiment of the grinding accuracy switching device of the present invention,
FIG. 2 is a flow chart of the control unit of the device, FIG. 3 is a front view of an operation panel of the device, FIG. 4 is a configuration diagram of a conventional grinding accuracy switching device, and FIG. 5 is a conventional grinding accuracy switching device. 3 is a front view of the operation panel of FIG. 1 ... motor, 3 ... comparator, 4 ... rice mill body, 6 ... operation _{panel, 10 0 ~10 3, 12 H} , 12 L, 13 ... switch, 14 ... control unit, 15 ... standard setting unit, M1 to M3 ... first to third memories.

Claims (2)

[Claims] 1. In a rice polishing machine in which the detection value is controlled so as to approach a set value and the grinding accuracy is automatically controlled, the rice milling machine moves in an arbitrary direction between a direction in which the detection value increases and a direction in which the detection value decreases. Set value varying means for changing the control target value, memory means for storing the detection value at the time of detecting the registration instruction, and output switching means for outputting the detection value written in the memory means as the target value. Precision switching device with and. 2. A rice milling machine, wherein a torque sensor is provided in a power transmission path from a motor to a whitening roll to control the electric power of the motor so that the torque detected by the torque sensor approaches a control target torque. A setting value varying means for changing the target torque value so as to move in an arbitrary direction out of a direction in which becomes larger and a direction in which becomes smaller, and a memory means for storing the detected torque value at that time when a registration instruction is detected, An accuracy switching device provided with output switching means for outputting the detected torque value written in the memory means as a target torque value.