JPH02122837A - Wear detector for hulling roll - Google Patents

Abstract

PURPOSE:To detect the wear condition of hulling rolls by providing a hulling device having a pair of hulling rolls rotatable in the opposite directions, between which unhulled rice is run for hulling and with a wear detector on the outer peripheral surfaces of the aforesaid rolls. CONSTITUTION:When an ignition switch 32 is turned on, a main motor for driving hulling rolls is energized to operate all the rotating parts of a machine. The clearance is then initialized between the hulling rolls 2 and 3 and adjusted by a load current control. During the shelling operation period, an instructive signal for the regular rotation of a detection and control motor 21 for predetermined hours is sent from CPU 25 to a relay 33 and an instructive signal for the reverse rotation thereof to a relay 34, whereby a hulling roll wear detector 19 is reciprocally moved to detect the wear condition of the hulling rolls 2 and 3 for judgement of its extent in comparison with the reference wear information, permitting an appropriate hulling operation.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a wear detection device for a deflating roll.

[Prior art]

As a conventional technique, there is a method in which a rotatable roller is brought into contact with the outer circumferential portion of a pair of plowing rolls to detect the wear state of the plowing rolls.

[Problem that the invention seeks to solve]

However, this conventional device has a problem in that the entire device becomes large because a rotatable roller is brought into contact with the outer periphery of the roll to be removed.

Therefore, the present invention aims to solve the drawbacks of the conventional device and make the detection device compact, and also detects the wear state of the roll to be removed and the pre-condition of the outer shape of the roll to be removed. be.

[Means to solve the problem]

The technical means of the present invention for solving such technical problems is as follows: a. Paddy is shredded between a pair of shredding rolls 2 and 3 that rotate in opposite directions around parallel shafts 5 and 7. The rice huller is equipped with a hulling device that supplies and then processes the hulling.

b8 Gap between both rolls 2 and 3 and roll 2 to be taken off,
A roll wear detector 19 is provided which reciprocates passing near the worn roll portions 2a, 3a located on the outer periphery of the roller.

c. When this depulping roll wear detector 19 detects that the diameter of the culm roll has become smaller than a predetermined value, the alarm device 5i is activated.
30 or the arithmetic control means 25 for stopping the drive of the scraping roll.

[Operation and effect of the invention]

During the shredding operation while supplying paddy between a pair of rolls 2 and 3 that rotate in opposite directions around the axes of parallel shafts 5 and 7, the shredding roll wear detector 19 detects a It moves reciprocally through the gap between the depulping rolls 2 and 3 and near the worn roll parts 2a and 3a located on the outer periphery of the depulping rolls 2 and 3, and checks the wear state of the depurating rolls 2 and 3 and the removal of the depurating rolls. The pre-state due to uneven wear and axis misalignment of the rolls 2 and 3 is detected 6. Then, when the wear state and wobbling state of the rolls 2 and 3 to be taken off reach a predetermined value or more, the arithmetic control means 25 detects A stop signal is output to the alarm device 30 or the main motor for driving the de-pulling rolls, the alarm or the driving of the de-pulling rolls 2 and 3 is stopped, and the operator replaces the de-pulling rolls 2 and 3 or replaces the de-pulling rolls 2. The shaft support condition has been corrected by 3 degrees, and proper shedding work can be performed.

〔Example〕

Embodiments of the invention shown in the drawings will be described below.

Reference numeral 1 denotes a removing part, and this removing part 1 has a pair of removing rolls 2.
, 3, and -1 is configured to receive the supply of paddy from some of the paddy hoppers 4 and to process it. One of these rolls 2 is rotatably supported by a fixed shaft 5 and rotated at a fixed position, and the other roll 3 is -
It is supported by a free guide shaft 7 provided on a swinging member 6 that rotates about a point 6a as a fulcrum. A pin 8 having a screw hole is supported on the free end side of the swinging member 6, and the swinging member 6 is rotated forward or backward by the adjusting screw rod 9 screwed into the threaded hole. It has a structure that swings, and by this swinging motion, the floating roll 3 is moved in the direction of distance with respect to the fixed roll 2, and the rolls 2, 3 are moved.
The gap can be adjusted wide or narrow.

10 is a control motor, which rotates forward or backward;
Gears 11, 12. Interlocking cylinder shaft 13. This is a configuration in which the above-mentioned adjusting screw rod 9 is driven via an interlocking pin 14 or the like. 15 is a roll gap setting dial that is integrally provided on the interlocking cylinder shaft 13.

16 is an opening/closing shutter provided at the opening of the paddy hopper 4;
It is configured to open to a predetermined open state with magnetic excitation of the solenoid 17, or to open when receiving a predetermined grain weight.

Reference numeral 18 denotes a scraping roll wear detection device for detecting the wear state of the scraping rolls 2 and 3, and is configured as follows. 19
1 is a roll abrasion detector composed of a light-emitting element and a light-receiving element. Alternatively, when the reverse rotational drive is transmitted to the detection screw 20 by the gears 22, 23, the roll wear detector 19 is moved along the guide 24 to the gap between the two rolls 2. , 3, and the inner circular portion 2b made of iron.
3b, and detects the gap and wear state of the depulping rolls 2 and 3 based on the presence or absence of an object and the difference in color between the worn roll portions 2a and 3a and the inner circular portions 2b and 3b.

FIG. 3 shows a block diagram for controlling the control motor 10 described above. 25 is a microcomputer arithmetic control unit (hereinafter abbreviated as CPU) equipped with a memory for storing various control programs and necessary data, and a main motor (hereinafter referred to as "CPU") for rotationally driving at least the shredding rolls 2 and 3. Detection information from the current transformer 26 that detects the load current (not shown), detector pulp rate information and pulp rate information from the pulp rate detector 27 that detects the rate of rice scraped off by the rolls 2 and 3 to be peeled off. The wear state detection information from the roll wear detector 19 is input, and on the other hand, an output signal for opening or closing the gap between the rolls 2 and 3, that is, a command signal for normal rotation or reverse rotation of the control motor 10, Command signal to turn ON/OFF the main motor (not shown) that drives the push roll 2゜3, detection control motor 2
1, a forward rotation command signal and a reverse rotation command signal that are output for a predetermined period at predetermined intervals, and an alarm device such as a buzzer (not shown)
operating signal, main motor for driving the scraping roll (not shown)
This outputs a stop command signal, etc.

Further, the CPU 25 uses a built-in timer function to operate the clock according to the control program.

28 is a relay for forward rotation of the control motor 10 (open side of the gap between the stripping rolls 2 and 3), 29 is a relay for reverse rotation of the control motor (closed side of the gap between the stripping rolls 2 and 3), and 30 is an alarm device. It is. Further, 33 is a relay for forward rotation of the detection control motor 21, and 34 is a relay for reverse rotation of the detection control motor 21.

The CPU 25 has the following main functions.

That is, when the contact state of the stripping rolls 2 and 3 is confirmed by comparing the load current when the stripping rolls 2 and 3 are in contact and the load current when they are in a non-contact state, a signal is output to open the gap between the rolls that will be removed for a predetermined period of time. (Means for setting the initial gap between the rolls that come off).

■During the shedding work, compare the detector pulp rate from the shedding rate detector 27 with the preset shedding rate set with the shedding rate setting dial 31, and if the detector pulp rate is high, outputs a deflating roll open signal, and conversely, when the detector pulse rate is low, outputs a deflating roll close signal.

■During the above-mentioned pulp removal rate control, when receiving the input of detection information of the load current of the main motor (not shown) that drives the desiliconization rolls 2 and 3, it is determined whether the current is higher than the set value or under load. Determine.

■In the above judgment, if the load current is lower than the set current, the above-mentioned half-control is continued; if it is higher,
Outputs a stop signal for half-off control.

(2) During the operation of (2) above, when a stop signal for the half-rolling control is output, a signal for opening the rolling roll is output for a predetermined period of time.

- Outputs a forward rotation command signal and a reverse rotation command signal for a predetermined time to the detection control motor 21 at predetermined time intervals, and reciprocates the peeling roll wear detector 19 to detect the wear state of the rolls 2 and 3 to be peeled off. .

■When the detection information of the peeling roll wear detector 19 is input, the wear limit standard information of the peeling rolls 2 and 3 and the uneven wear standard information of the peeling rolls (if the peeling rolls 2 and 3 wear unevenly,
Or, by comparing with the standard information (in which the de-pudding rolls are rotating while shaking, which is caused by the eccentric rotation of the shafts of the de-pudding rolls 2 and 3), whether or not the rolls 2 and 3 have reached their wear limit. Then, it is determined whether or not the depulping roll 2.3 is unevenly worn.

■If the rolls 2 and 3 to be removed have reached the wear limit in (2) above, and if the rolls 2 and 3 to be removed are unevenly worn, an activation signal for the alarm device 30 such as a buzzer is output. or the main motor for driving the stripping roll (liii
Outputs a stop command signal (not shown).

In addition, if the de-pudding rolls 2 and 3 are unevenly worn, make the gap narrower than the normal gap between the de-pudding rolls.
It may be configured to output a command signal to set the corrected plowing roll gap, or detecting that the plowing roll 2.3 is rotating axially deviated as an abnormality and issuing an alarm, etc. It may be configured as follows.

Next, the operation of the embodiment will be explained.

When the start switch 32 is turned on, a main motor (not shown) for driving the depulping roll is started, and each rotating part of the machine is driven. Then, first, the gap between the rolls 2 and 3 to be removed is initialized, and when the shutter 16 is opened to start work, the gap between the rolls 2 and 3 to be removed is controlled by load current control. That is, the opening and closing of the gap between the de-pulping rolls 2 and 3 is controlled so that the load current of the main motor (not shown) becomes a preset load current.

Next, when the number of sample grains supplied to the shedding rate detector 27 reaches a predetermined number of grains and the shedding rate becomes computable, the process shifts to half-throwing control. This semi-control for taking off is the taking off rate setting dial 31
To achieve the preset removal rate in , remove the removal rolls 2 and 3.
The opening and closing of the gap is controlled, and the hulling operation is carried out while this state continues.

Next, while performing the stripping work as described above, the CPU 25
, the detection control motor 21 outputs a forward rotation command signal for a predetermined time to the relay 33 and a reverse rotation command signal to the relay 34 at predetermined time intervals. Then, the wear detector 19 for the rolls to be taken off moves back and forth to detect the wear state of the rolls 2 and 3 to be taken off, and when the detected information is input to the CPU 25, the wear limit reference information for the rolls 2 and 3 to be taken off is output. It is compared with the uneven wear standard information of the depulping rolls 2 and 3 to determine whether the depulping rolls 2 and 3 have reached the wear limit.
Determine whether or not there is uneven wear.

If the rolls 2 and 3 to be taken off have reached their wear limit, and if the rolls 2 and 3 to be taken off are unevenly worn,
An alarm can be issued by outputting an activation signal of the alarm device 30 such as a buzzer, or a stop command signal can be output to the main motor (not shown) for driving the depulping roll to stop driving the depulping roll and remove the dehulling roll. Replacing the rolls 2 and 3 or removing the rolls 2 and 3
The shaft support condition is corrected to perform proper shedding work.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a cutaway side view, FIG. 2 is a cutaway side view and a cutaway plan view, and FIG. 3 is a block circuit diagram. [Explanation of symbols] 1. Removing part 2. De-pudding roll 2a, worn roll portion 3. Roll 3a that comes off, worn roll part
4. Paddy hopper 5, fixed shaft (shaft) 6. Swing member 6
a, fulcrum 7. Idle shaft (shaft) 8, pin
9. Adjustment screw 10, control motor
11. Gear 12, Gear 13. Interlocking cylinder shaft 14, interlocking pin 15, roll gap setting dial 16, opening/closing shutter 17. Solenoid 18, roll wear detector to be removed 19° 20° 22° 24° 25° 26° 28° 30° 31° 32° 34° Roll wear detector to remove detecting screw rod 21. detection control motor gear
23. Gear guide calculation control unit (CPU) (calculation control means) Current transformer
27. Skipping rate detector relay 29. Relay alarm device drop rate setting dial start switch 33. relay relay

Claims (1)

[Claims] (1) A scraping roll wear detection device consisting of a combination of the following requirements. a. A hulling device is provided between a pair of hulling rolls 2 and 3 that rotate in opposite directions around the axes of parallel shafts 5 and 7, which performs hulling processing while supplying rice. b, the gap between both the pudding rolls 2 and 3 and the pudding roll 2;
A depulping roll wear detector 19 is provided which reciprocates passing near the worn roll portions 2a, 3a located on the outer periphery of the roll. c. When the scraping roll wear detector 19 detects that the diameter of the scraping roll has become smaller than a predetermined value, the alarm device 3 is activated.
Arithmetic control means 2 for stopping the drive of the 0 or depulping roll
5.