JPS6384644A - Roll clearance controller in gluten removing device - Google Patents

Abstract

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

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a roll gap control device in a husking device capable of husking grains such as paddy.

(Prior art) The load current of the motor at the beginning of work is memorized, the load current of the motor is detected when the machine is in a non-working state, and the detected value for each car is compared to detect contact of the de-pulling roll. There is something that determines the presence or absence of something.

(Problems to be Solved by the Invention) However, at the beginning of driving the motor and after a predetermined period of time, as the winding resistance of the motor heats up, the resistance increases and the current value decreases. Therefore, it is not possible to determine whether or not the de-pulping rolls are in contact with each other, which tends to cause friction between the rolls and generation of abnormal noise.6 (Means for Solving the Problem) The aim is to improve the accuracy of judgments, and the following technical measures have been taken.

In other words, a pair of de-pudding rolls 1 are rotatably provided, and one of the de-pudding rolls 1 is configured to be able to move closer and closer to the other roll, so that the gap between the rolls can be adjusted. , a non-hulling detection means capable of detecting a non-hulling work state, and a motor 2 which is a drive source for the hulling work.
motor current detection means capable of detecting the current of
an arithmetic control means capable of inputting detection information outputted from the non-hulling detection means and the motor current detection means, and outputting a drive and stop command signal for the roll gap adjustment operation of the dehulling roll; When the arithmetic control means inputs the non-hulling information, it outputs a drive command signal to increase the roll gap, and inputs motor current information before and after this drive command, and when the difference between the two pieces of information exceeds a predetermined value. At some point, in order to stop outputting the drive command signal,
A roll gap control device in a hulling device has a structure in which a non-hulling detection means, a motor current detection means, and an arithmetic control means are related to each other.

(Operation) When the arithmetic control means inputs the non-hulling information, it inputs the measured value of the motor current output from the motor current detection means.

Then, this arithmetic and control means outputs a drive command signal to increase the roll gap of the shredding rolls 1, and measures the motor current again. Then, when the difference between the constant values on both sides exceeds a predetermined value,
Since the arithmetic control means stops outputting the drive command signal, the roll gap adjustment operation of the shredding rolls is also stopped.

(Effects) Since the measured value in non-hulling work is used as a reference value for judgment, contact with the hulling roll can be prevented. Therefore,
It is possible to improve durability by preventing friction between the rolls and contact noise between the rolls.

〔Example〕

Hereinafter, one embodiment of the present invention will be specifically described based on the drawings.

First, to explain its configuration, the hulling machine 3 is equipped with a hulling device 4 on the upper part of the machine body, and a mixed rice sorting device 5 equipped with a cylindrical rotary sorting machine having a large number of depressions on the inner circumferential surface.
Wind selection at the bottom of the fuselage! ! ! It is equipped with 6. The pudding device 4 is provided with a pudding roll 1 installed in a casing 7 so as to be rotatable and sortable in the direction of the arrow. Among the pulping rolls 1, one of the pulping rolls A is installed in the middle part of a movable plate 8 whose lower part is pivotally connected. Then, the movable plate 8
A threaded portion 10 is formed at one end of the adjustment shaft 9 at the upper end of the adjustment shaft 9.
It is screwed on. Further, a bottle 1 is attached to the other end of the adjustment shaft 9.
1 is inserted and fixed, and both ends of this pin 11 are
The end portion of the adjustment shaft 9 is provided so as to be able to engage with a rib 13 formed on the inner surface of the rotating case 12. An adjustment drive gear 16 that meshes with a motor gear 15 attached to the shaft end of a geared motor 14 is removably fixed to the side end of the rotating case 12 with a screw. Reference numeral 17 denotes a regulating bolt that regulates the movement of the rotating case 12 in the thrust direction.

Therefore, when the geared motor 14 rotates, this rotational power is transmitted to the rotating case 12 via the adjustment drive gear 16 meshing with the motor gear 15.
2, the rib 13 rotates, and the pin 11 and this bottle 1
The adjustment shaft 9, which is integrated with 1, is rotated. When the geared motor 14 rotates in the forward direction, the screwed part of the movable plate 8 moves in the direction of arrow A around the pivot part, so the propeller roll A also moves in the same direction and the other Widen the gap between the roll and the roll. On the other hand, when the geared motor 14 reverses, the movable plate 8 and the roll A move in the direction opposite to the direction of arrow A to narrow the roll gap or come into contact with each other. It is removably attached to the rear machine frame of the sorting @ 2, and is the drive source for the scraping roll 1, the rotating sorter, and other rotating parts, and is provided so that it can be transmitted via pulleys and transmission belts. . 18 is casing 7
This is the shutter lever installed at the top of the camera.

To explain the block circuit of FIG. 3, 19 is an arithmetic control unit (hereinafter referred to as CPU) of a microcomputer having a built-in memory containing necessary data, control programs, etc.
performs arithmetic and logical operations and comparison operations. The information input to the CPU 19 is CT (
The load current of the motor 2 converted into a digital quantity via the current transformer (current transformer) 20 and the comparator 21, the presence or absence of paddy information from the grain sensor 23 provided in the paddy funnel 22 provided above the hulling device 4, and the shutter. There is information on opening and closing of the lever 18. Note that the grain sensor 23 is a pressure-sensitive type such as a microswitch 24, and when the shutter lever 18 is opened, the microswitch 24 becomes ro NJ.

CPU19 has the following functions. Namely.

■Although not shown in the figure, after calculating the shedding rate, it is compared with the set shedding rate input in advance, and the geared motor 14
Outputs the roll “open” (normal rotation) signal to the
"Closed" (reverse) is output. (2) When inputting the "no paddy r" information or the shutter "closed" information, the measured current of the motor 2 and the measured current of the motor 2 after a predetermined period of time are inputted. (2) Compare and calculate both measured currents, and if the difference is greater than a predetermined value, stop outputting the roll "open" drive command signal.

Next, the control operation will be explained using the flowchart shown in FIG. When the shutter lever 18 is opened (at this time, the microswitch 24 is set to ro F FJ), the grains are subjected to the shredding action by the rotating shredding roll 1 and fall. After wind selection in the wind selection room 6, the rice is fried by a thrower into the mixed rice sorting device 5, where it is sorted into brown rice and mixed rice.

This brown rice is then wind-selected in a wind-selecting room 6 and then fried and discharged outside the machine in a thrower.

In such sorting action, it is determined whether there is a predetermined amount of paddy in the paddy funnel 22 (step 10), and if it is determined that there is, it is determined that the shutter lever 18 should be opened or closed (step 20). If it is determined that the shutter lever 18 is "open", the same flow is repeated from the start, but if the amount of paddy is "absent" or the shutter lever 18 is "closed", the timer is reset (step 30). Set and start the timer from (step 40)
). Then, the time up is determined (step 5o)
When determining that the time set by the timer has elapsed, the CPU 9 outputs a drive command signal for normal rotation (opening) to the geared motor 14 (step 60).
U19 takes in the measured current of motor 2 as a digital quantity via C-T2O and comparator 21 (step 70). Then, after resetting the timer (step 80),
Set and start the timer (step 90)
). Then, when the C:PU 19 determines that the time is up (step 100), the current measurement value of the motor 2 (M2
) (step 110), then this measurement value (M
2) and the measured value (M8) are compared and calculated (step 120). If it is determined that the difference is greater than or equal to a predetermined value, the output of the drive command signal in step 60 is stopped (step 130).

Therefore, when the amount of paddy supplied into the paddy funnel 22 is less than a predetermined value or when the shutter lever 18 is closed and no paddy is supplied to the shredding roll 1 side, the current of the motor 2 at that time is measured. Since this value is used as a reference value, the accuracy of the reference value can be increased and it is possible to prevent contact between the depulping rolls. Also, while the roll gap of the de-pudding roll 1 is "opened", the motor 2
Since the roll gap ``open'' output of the de-pull roll 1 is performed until the current of the de-pull roll 1 stops changing, the roll gap of the de-pull roll 1 is output after the output is stopped.
There is no contact with

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a side view of a hulling machine, Fig. 2 is a sectional view of a hulling device, Fig. 3 is a block circuit diagram, and Fig. 4 is a side view of a hulling machine. It is a flowchart.

Claims (1)

[Claims] A pair of de-pudding rolls 1 are rotatably provided, and the de-pudding rolls 1 are rotatably provided.
A non-hulling detection means capable of detecting a non-hulling work state in a hulling device in which one roll is configured to be able to move closer and closer to the other roll so that the gap between the rolls can be adjusted. , a motor current detection means capable of detecting the current of the motor 2 which is a drive source for the hulling operation, and detection information outputted from the non-hulling detection means and the motor current detection means can be inputted, and and an arithmetic control means capable of outputting a drive and stop command signal for adjusting the roll gap of the dehulling rolls, and when the arithmetic control means inputs non-hulling information, it outputs a drive command signal to increase the roll gap. A non-hulling detection means, a motor current detection means, and an arithmetic control are used to output the motor current information before and after the drive command, and to stop outputting the drive command signal when the difference between the two pieces of information exceeds a predetermined value. A roll gap control device in a plowing device having a configuration in which a means is associated with the roll gap control device.