JPH08290122A - Roll gap adjuster for husking separator - Google Patents

Abstract

PURPOSE: To make operation control simple and easy and to improve working efficiency by providing the roll gap adjuster with a fresh control reference value setting means which freshly sets the control reference within the adequate range of a means for deciding the adequateness of the control reference value in association with the decision that the means for deciding the adequateness of the control reference value is out of the range. CONSTITUTION: A control reference load current value is taken into a control section 25 and is compared with the adequate range reference load current value stored in an EEPROM 57 at every prescribed time at the time of controlling a roll gap by the load current value reference. The control is continued if the value is within the adequate range. Decision is made that the control reference load current value is destroyed by a certain noise-like factor if the value is out of the adequate range. The roll gap control is then suspended and, for example, the fresh control reference load current value corresponding to a standard hulling 95% is freshly set and, thereafter, the roll gap control based on the fresh control reference load current value is restarted. Then, the continuation of the work while the roll gap is automatically adjusted is made possible even if the control reference load current value is destroyed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a clearance adjusting device for a hulling roll.

[0002]

2. Description of the Related Art In a hulling apparatus composed of a pair of hulling rolls, a hulling roll automatic system for controlling the pair of hulling roll gaps on the basis of a load current value or a depletion rate is used. Some have a gap control means.

[0003]

In the conventional apparatus, when the control reference load current value of the hull roll automatic gap control means is destroyed by some noise factor, the hull roll automatic gap is automatically cleared. There was a problem that control could not be continued. Therefore, the present invention is intended to solve such a problem.

[0004]

The technical means of the present invention for solving such a technical problem is a pair of hulling rolls 3, 3 for hulling and a hulling roll 3, 3. A hulling roller that opens and closes a gap between a main motor 44 that drives 3 and a pair of hulling rollers 3 and 3 on the basis of a load current value or a removal rate value.
The automatic clearance control means, the load current sensor 32 for detecting the load current value of the main motor 44, and the control reference load current value or control reference removal rate value of the hulling roll automatic clearance control means are The control reference value adequacy determining means for determining whether or not the control reference value adequacy is taken in every predetermined time and is within the appropriate range, and the control reference value adequacy in relation to the determination that the control reference value adequacy determining means is out of range. The roll gap adjusting device of the paddy hull sorting machine is composed of the new control reference value setting means for newly setting the control reference value within the proper range of the judging means.

[0005]

When paddy is supplied to the pair of paddy rolls 3 and 3 to start the paddy work, the pair of paddy rolls 3 and 3 starts the gap control based on, for example, the load current value. The load current value of the main motor 44 for driving the hull rolls 3, 3 is detected by the load current sensor 32 and compared with the control reference load current value, and the detected load current value is the control reference load current value. The opening and closing of the roll gap is controlled so that

During such roll gap control, the control reference load current value is taken into the control reference value adequacy determining means at every predetermined time and it is determined whether or not it is within the appropriate range. Then, when the control reference value appropriateness determination means determines that the control reference load current value is within the appropriate range, the roll clearance control based on the load current value reference is continued as it is, and is also outside the appropriate range. If it is determined, it is determined that the control reference load current value is destroyed due to some noise factor, and the roll clearance control is stopped. Then, for example, a standard new control reference load current value within the proper range of the control reference value appropriateness determining means is newly set, and the roll clearance control is restarted based on the new control reference load current value.

[0007]

Embodiments of the present invention shown in the drawings will be described below. First, the configuration of the embodiment will be described. First, the overall configuration of a hulling and sorting machine will be described with reference to FIG. Reference numeral 1 is a hulling portion, and this hulling portion 1 is composed of a paddy hopper 2, a pair of hulling rolls 3, 3. Reference numeral 4 denotes a slidable rice wind selection path, in which the slidable rice from the rice hull portion 1 is wind-selected by the sorting wind generated by the suction dust collector 5 in front, and the light rice husk is sucked in the dust collector 5, The heavy brown rice and the mixed rice of paddy discharged through the tube 6 to the outside of the machine, and the mixed rice of the heavy brown rice and the paddy 7 on the lower side
Be dropped and sorted. The mixed rice dropped and sorted into the slide-down rice receiving gutter 7 is fried by the mixed rice fried machine 8 and is supplied to the conveyance start end portion of the supply gutter 14 on the rotary selection cylinder 11 side through the mixed rice hopper 9. It is a configuration.

Reference numeral 10 is a sorting case, and this sorting case 1
The rotary sorting cylinder 11 having a large number of pot holes formed on the inner peripheral surface thereof in 0 has a sorting start side (right side in FIG. 1) and a sorting end side (FIG. 1) so as to rotate around the horizontal axis. On the left),
It is rotatably supported by the drive rollers 12, 12, .... A supply gutter 14 on which a supply helix 13 is supported and a brown rice gutter 16 on which a brown rice helix 15 is supported are horizontally installed in the rotary selection cylinder 11.

When arranging the supply gutter 14 and the brown rice gutter 16 in the rotary selection cylinder 11, as shown in FIG. 2, the supply gutter 14 is placed on the scraping side of the rotary selection cylinder 11 and the brown rice gutter. 16 is disposed on the side of the rotary selection cylinder 11 that rotates downward from above. In this supply gutter 14, the mixed rice of paddy and a part of brown rice scooped up low in the pot hole of the rotary selection cylinder 11 is dropped and sorted, and is further transferred by the supply spiral 13 to the conveying end side of the supply gutter 14. Is supplied to the sorting start end side of the rotary sorting cylinder 11, and the supply gutter 14 also has a function of receiving mixed rice.

The end of the brown rice gutter 16 at the end of transportation is the brown rice falling tube 1
7. It is connected to brown rice gutter 19 through brown rice grain plate 18. The brown rice received by the brown rice gutter 16 is the brown rice falling tube 1
7. The brown rice is passed through the brown rice grain plate 18 and dropped into the brown rice gutter 19 to be selected by air, and is further taken out from the brown rice gutter 19 via the brown rice grain cultivator 20. Rotating sorting cylinder 1
Below the sorting end side of No. 1, a paddy gutter 21 is arranged. A paddy grain hopper 22 is connected to the paddy receiving trough 21, and an upper end of the paddy grain hopper 22 is connected to the paddy reducing hopper 23 of the paddy hull 1. Then, the grain mainly composed of the sorted paddy rice that has flowed to the sorting end side of the rotary sorting cylinder 11 is the paddy receiving gutter 21.
In addition, the grain is dropped to the grain hulling machine 1, the grain-reducing hopper 23, the grain is reduced to the grain-sliding unit 1, and the grain is again grained.

Next, the structure of the control unit will be described with reference to FIGS. FIG. 2 shows a known roll gap adjusting device for adjusting the gap between the hulling rolls 3 and 3. The hulling rolls 3 and 3 are a hulling roll 3 which rotates at a fixed position on the left side, and a right hulling roll 3 which is rotatably supported by a swing arm to be adjusted. It is composed of. Reference numeral 45 is a roll clearance adjusting motor. When the roll clearance adjusting motor 45 rotates in the normal or reverse direction, the roll clearance is constituted by a gear group, an adjusting screw rod, a swing arm and the like. The adjusting means 24 is configured to open and close the gap between the hulling rolls 3 and 3.

A large number of switch groups are connected to the control unit 25 having a built-in CPU, and a large number of sensor groups are connected via a signal conversion circuit 36 which is an interface. The control unit 25 is connected to a large number of actuator groups and a display device group via an output interface. Next, these connection relationships will be specifically described.

Pull-off rate upper switch 26, pull-off rate lower switch 27, cylindrical rotation high switch 28, cylindrical rotation low switch 2
9, automatic / manual switch 3 to switch to automatic or manual
0, a load of detecting the load current value of the main motor 44, and a switch group of the display changeover switch 31 for switching and displaying the rotation speed of the rotation selection cylinder 11 and the detected load current value on the cylindrical rotation speed display device 50. Current sensor 32, power supply voltage sensor 33,
A power supply frequency sensor (R-T) 34, a sensor group of a power supply frequency sensor (S-T) 35, a grain sensor 37 for detecting the presence or absence of grains in the paddy hopper 2, and a hulling roll 3, 3
, A roll deployment sensor 38 for detecting a deployment state in which the roll gap is widely opened, a shutter sensor 39 for detecting a fully closed state of the paddy supply control valve 39a, a rotation sensor 40 for detecting the number of rotations of the rotary selection cylinder 11, A valve opening sensor 41 comprising a potentiometer for detecting the opening of the paddy supply control valve 39a,
A sensor group of a transistor-open collector type scattering sensor 42 for detecting the picked-up state of the grain in the rotary selection cylinder 11,
The run / stop switch 43 is connected to each of the control units 25 via the signal conversion circuit 36.

Further, a roll for adjusting the roll gap between the main motor 44 and the hull rolls 3 and 3 for driving the hull sorting machine from the control section 25 via the signal conversion circuit 36. Gap adjustment mode
The motor 45, a shutter opening adjustment motor 46 for adjusting the opening of the paddy supply adjusting valve 39a, a cylindrical rotation adjusting motor 47 for adjusting the rotation speed of the rotary selection cylinder 11, and a communication device 48 are provided. It is connected. Further, the control unit 25 includes a display tube 49 for displaying characters, numbers, etc., a cylindrical rotation speed display device 50 for displaying the rotation speed of the rotation selection cylinder 11, current display LEDs 51, L.
The ED display device 52 and the buzzer 53 are connected to each other.

Next, the control panel 54 shown in FIG.
Will be described. The control panel 54 includes, for example, a fluorescent display tube type display tube 49 and a cylindrical rotation speed display device 5.
0, current display LED 51, display unit for displaying the presence or absence of paddy in the paddy hopper 2, shutter open / close display unit, roll expansion display unit, LED display unit 52a for displaying the presence or absence of abnormality, whether automatic operation or manual operation LED display section 52b for displaying
LED display 52c for displaying roll expansion, automatic / manual switch 30, take-off rate lower switch 27, take-off rate upper switch 26, cylindrical rotation low switch 29 for lowering and adjusting the number of rotations of the rotary selection cylinder 11, rotation Cylindrical rotation height switch 28 and display changeover switch 31 for increasing and adjusting the rotation speed of the selection cylinder 11.
However, it is provided for each husband and wife.

Next, the control contents of the CPU 25 will be described. First, the automatic / manual switch 30 is selected on the automatic side, and the run / stop switch 43 is operated on the run side. Then, the main motor 44 is turned on to drive the rotating parts of the paddy hull sorting machine. Next, the initial gap setting control for setting the initial gap between the hulling rolls 3 and 3 is performed. A roll gap opening command signal from the CPU 25 is output to the roll gap adjusting motor 45, and the roll gap adjusting means 24 is driven to open for a predetermined time.
When the clearance between the hulling rolls 3 is adjusted and the load current sensor 31 detects the non-contact state of the hulling roll in which the detected load current value does not change, the opening adjustment is stopped. Then,
A close command signal for the roll gap is output, the roll gap is closed and adjusted, and the load current sensor 32 detects an increase in the load current value.
When the slight contact between the hulling rolls 3 and 3 is confirmed, the closing adjustment is stopped. Then, an opening command signal for the roll gap is output, and the roll gap adjusting motor 45 is opened for a predetermined time.
The adjustment setting is made to a predetermined initial gap (for example, 1 mm).

As described above, when the adjustment setting of the initial gap is completed, the detection value of the load current sensor 32 is still continuously changing to the decreasing side, or the load current value higher than the no-load current value. When detecting, the additional open command signal is output from the control unit 25, the detection result of the load current sensor 32 does not change, or the load current value equivalent to the no-load current value is detected, When the gap between the hulling rolls 3 is in a non-contact state, the additional opening command signal is stopped and the setting of the initial gap is completed.

When the additional opening command signal is output, the load current value when the hulling roll is not in contact when the opening of the roll gap is adjusted at the beginning of the initial gap setting control is It is also possible to write and store it as a reference load current value of no load in the EEPROM 57, and to judge non-contact of the roll gap by comparison with this. When the initial clearance is set, in the case of the conventional device that does not have the additional opening adjustment process, when the paddy rolls 3 and 3 are worn, the initial clearance setting is completed in the contact state of the roll clearance. Then, the hulling work may be started, and in this case, the roll gap is closed and the hulling roll is worn early, or the brown rice has a skin-skinning phenomenon. was there. However, by performing the additional opening adjustment of the roll gap as described above,
Such a problem can be solved. Next, the shutter opening initial setting control for adjusting the initial opening of the paddy supply adjusting valve 39a is performed. An open command signal is output from the CPU 25 to the shutter opening adjustment motor 46,
Set the paddy supply control valve 39a to a predetermined valve opening (for example, 10 mm)
The initial opening is set so that the hulling work is started.

Even if the CPU 25 outputs an open command signal to the shutter opening adjustment motor 46 and a certain period of time elapses,
When the valve opening sensor 41 does not detect a constant value indicating the predetermined valve opening, the valve opening sensor 41 is determined to be abnormal. Then, the opening control of the paddy supply control valve 39a is stopped, the roll gap control is performed based on the load current value reference, which will be described later, and the work is continued. Therefore, even if the valve opening sensor 41 becomes abnormal due to some reason, the hulling work can be continued and the work efficiency is improved.

Next, a valve opening adjustment command signal for adjusting the supply amount adjustment setting position of a paddy supply adjusting lever (not shown) is output, and the paddy supply adjusting valve 39a is moved to a position corresponding to the set efficiency valve opening. Change adjusted. Next, the control shifts to the roll clearance control based on the load current value reference. Then, the detected load current value of the load current sensor 32 is sent to the control unit 25, the control reference load current value and the detected load current value are compared, and the detected load current value is higher (or lower) than the control reference load current value. In this case, an open (or close) command signal is output to the roll gap adjusting motor 45, the gap between the hulling rolls 3 is adjusted to a predetermined amount on the open side (or closed side), and the detected load current value A return to the control reference load current value is achieved. If the detected load current value is within the range of the control reference load current value, the control command signal is not issued and the hulling operation is performed while maintaining the roll gap as it is. Instead of the roll clearance control based on the load current value reference, the hull roll clearance may be controlled based on the removal rate reference.

Next, an explanation will be given of the control reference load current value proper range determination control which is carried out at the time of the roll clearance control based on the load current value reference. At the time of controlling the roll gap based on the load current value reference, the control reference load current value is fetched by the control unit 25 at every predetermined time and compared with the appropriate range reference load current value stored in the EEPROM 57. If it is within the proper range, the control is continued, and if it is outside the proper range, it is determined that the control reference load current value is destroyed due to some noise factor, and the roll is executed. The clearance control is stopped, and then, for example, a new control reference load current value corresponding to the standard depletion rate of 85% is newly set and rewritten in the EEPROM 57. Gap control is restarted.

Therefore, even if the control reference load current value is destroyed, the work can be continued while automatically adjusting the roll clearance, the driving operation becomes simple and easy, and the work efficiency is improved. In addition, set the control reference load current value at the start of work,
For the type in which the removal rate setting dial (not shown) is rotated to a predetermined position, the reference value may be set again from the operation position of this removal rate setting dial. The control reference load current value of 1 is sequentially stored in the storage unit (or the EEPROM 57) of the control unit 25, and when the reference value is out of the proper range, the stored reference value before destruction (or several times A new control reference load current value may be set based on the average value). In addition, it is also applied to the roll clearance control based on the removal rate standard, and similarly, it is determined whether the control reference removal rate is within the proper range. The rate may be set.

Next, the power supply frequency sensor (RT) 3
4. Adequacy determination control of the power supply frequency sensor (ST) 35 will be described. When the power is turned on, a frequency of 50 hertz or 60 hertz is detected by the power supply frequency sensor (RT) 34 and the power supply frequency sensor (ST) 35 and is input to the control unit 25. Then, the measurement ratio of the sensor is corrected by the detection frequency. The detection frequency from the power supply frequency sensor (R-T) 34 and the power supply frequency sensor (S-T) 35 may not be input due to some failure factor during the work. In such a case, the control is continued based on the detection frequency stored before the failure. Therefore, even if the frequency sensor fails during the automatic control operation, the automatic control of the roll clearance and the like can be continued.

Next, the abnormality detection control of the load current sensor 32 during the roll clearance control based on the load current value will be described. During the roll gap control based on the above-mentioned load current value, the control unit 25 issues an opening or closing adjustment command to the roll gap adjusting motor 45, and when the roll gap is controlled to open and close, it is constant. Load current sensor 32
When the detected load current value of 1 does not change, it is determined that the load current sensor 32 is abnormal. Then, after that, the clearance control of the hulling roll is stopped, the output of the control command signal to the roll clearance adjusting motor 45 is stopped, and an abnormal display is displayed on the display tube 49.

Next, the overload prevention control during the roll clearance control based on the load current value will be described. During the roll clearance control based on the load current value reference, the operator operates the removal rate upper switch 26 and the removal rate lower switch 27 (in addition, by turning on any other switch, the removal rate is removed). The control reference load current value can be switched between high and low by operating the rate up switch 26 or the pull-down rate down switch 27). At this time, when the detected load current value is switched to the high side and exceeds the overload reference value, the closing control of the roll gap is immediately stopped and the display tube 49
Is displayed on the display, and the control reference load current value is newly set when the control reference load current value is slightly lower than the reference overload current value.

Therefore, even if the operator changes the control reference value without being aware of the overload reference load current value, the overload process is automatically performed to prevent the breaker from dropping.
It is easy to change the reference value setting. Also, by applying it to roll clearance control based on the depletion rate reference, the control reference depletion rate is similarly set to high and low, and is set to the high side, and the detected load current value exceeds the overload reference value. In such a case, the same processing as described above may be performed.

Next, the system settings made when the product is shipped will be described. This system setting is
While the stop switch 43 is stopped, any two switches of the switch group, for example, the display changeover switch 31 of the control panel 54 is turned on, and the removal rate increasing switch 26 is turned on. In connection with such selection of the system setting, when the function conversion of the switch group is performed and, for example, the removal rate upper switch 26 or the removal rate lower switch 27 is turned on, the system setting item becomes
For example, items such as model setting, check function, overload current value rate correction, scattering position adjustment correction of the rotary selection cylinder 11, original power supply voltage correction, load current value correction, etc. are switched in ascending or descending order, and predetermined items are selected. It is a configuration that can be selected.

In this way, when the model setting in the system setting is selected, one of a plurality of models is displayed on the display tube 49, and then, for example, the cylinder rotation height switch 2 is displayed.
8 or every time the cylindrical rotation low switch 29 is operated, another plurality of models are sequentially switched in ascending order or descending order, and the model displayed by the final switch operation is selected and stored in the EEPROM 57, and the model is displayed. Based on this, various control reference values are determined, and based on this, the roll gap control based on the load current value reference is performed.

Although the model is set as described above, if the model is not set, a message "Model not set. Please set model" is displayed on the display tube 49, and manual operation and automatic operation are performed. In this configuration, the output of the drive command signal from the control unit 25 to various motors is prohibited. It should be noted that, instead of this embodiment, a configuration may be adopted in which manual operation is possible but automatic operation is not possible.

The check function of the system setting will be described. When the check function is selected in the same manner as described above, the plurality of LEDs on the control panel 54 are selected.
A short check signal is sequentially output from the control unit 25 to the display device 52 and the current display LED 51 to check whether or not there is an abnormality. In addition, a long check signal is output to the plurality of motors, and the motor is checked. The presence or absence of abnormalities is checked. Since it is configured in this way, it is possible to perform a sufficient check because the L / E / D type can be visually checked even if the lighting is short.
Since it is checked with a long output to the data, it can be confirmed while preventing the welding of the relay, and the check is completed in a relatively short time to be efficient.

Next, the operation of FIG. 1 will be described. The paddy placed in the paddy hopper 2 is supplied to the pair of paddy rolls 3 and 3 to be padded. The hulled-off rice is supplied to the downslope rice wind selection path 4 and is wind-selected, and the light rice husks are discharged to the outside of the machine through the suction dust collector 5 and the dust collector 6. The heavy brown rice and the mixed rice of paddy are dropped and sorted by the sliding-down rice receiving gutter 7 below. Next, the mixed rice dropped and selected on the scraped rice receiving trough 7 is fried by the mixed rice lifting machine 8 and supplied to the mixed rice hopper 9, and further, the inside of the supply trough 14 is conveyed from the conveyance start end to the conveyance end. It is conveyed toward the section and is supplied to the sorting start end side of the rotary sorting cylinder 11.

The mixed rice fed to the starting side of the rotary sorting cylinder 11 is picked up while being inserted into the pot hole on the inner peripheral surface and being picked up.
The large-sized paddy and a part of the brown rice are scooped up low and dropped into the supply gutter 14. In this way, the brown rice selected by the brown rice gutter 16 is the brown rice gutter 16
The inside is conveyed by the brown rice spiral 15 to the sorting end side of the rotary sorting cylinder 11, and then it is dropped through the brown rice falling cylinder 17 and the brown rice grain plate 18 into the brown rice receiving trough 19 while being wind-selected, and further the brown rice is fried. It is taken out of the machine via the grain machine 20.

The mixed rice dropped into the supply gutter 14 is conveyed by the supply spiral 13 and supplied to the sorting start end side of the rotary sorting cylinder 11 for re-sorting, and the inside of the rotary sorting cylinder 11 is sorted to the sorting end side. The flowed and sorted grains fall into the paddy receiving gutter 21, and are further reduced to the paddy rolls 3 and 3 via the paddy grain elevator 22 and the paddy reducing hopper 23, and the paddy is rolled again. It is removed.

[0034]

As described above, according to the present invention, for example,
Even if the control reference load current value is destroyed during the control of the roll clearance based on the load current value reference, the new control reference load current value is newly set and the automatic control of the roll clearance can be continued. Yes, the driving operation is simple and easy, and the work efficiency is improved.

[Brief description of drawings]

FIG. 1 is a cut side view and a cut rear view of a paddy sorting machine.

FIG. 2 is a cutaway side view of a main part.

FIG. 3 is a block diagram.

FIG. 4 is a block diagram.

[Figure 5] Front view of the panel

FIG. 6 Flow chart

[Explanation of symbols]

 1 hulling part 2 hulling hopper 3 hulling roll 4 sliding rice wind selection part 5 suction dust extractor 6 dust collecting cylinder 7 sliding rice receiving gutter 8 mixed rice fried machine 9 mixed rice hopper 10 sorting case 11 Rotating sorting cylinder 12 Drive roller 13 Supply spiral 14 Supply gutter 15 Brown rice spiral 16 Brown rice gutter 17 Brown rice falling tube 18 Brown rice grain board 19 Brown rice receiving gutter 20 Brown rice grain grazing machine 21 Paddy receiving gutter 22 Paddy grain grinder 23 Reduction hopper 24 Roll gap adjusting means 25 Control unit 26 Depth rate upper switch 27 Depth rate lower switch 28 Cylindrical rotation high switch 29 Cylindrical rotation low switch 30 Automatic / manual switch 31 Display change switch 32 Load current sensor 33 Power supply voltage Sensor 34 Power frequency sensor (RT) 35 Power frequency sensor (ST) 36 Signal conversion circuit 37 Glen sensor 38 Roll expansion sensor 39 Shutter sensor 39 Paddy supply adjusting valve 40 Rotation sensor 41 Valve opening sensor 42 Scattering sensor 43 Run / stop switch 44 Main motor 45 Roll clearance adjusting motor 46 Shatter opening adjusting motor 47 Cylindrical rotation adjusting motor 48 Communication device 49 Display tube 50 Cylindrical rotation speed display device 51 Current display LED 52 LED display device 53 Buzzer 54 Control panel 57 EEPROM

Claims (1)

[Claims] 1. A pair of hulling rolls 3, 3 for hulling.
And a main motor 44 that drives the hulling rolls 3 and 3, and a hulling roll that opens and closes and adjusts the gap between the pair of hulling rolls 3 and 3 based on the load current value or the removal rate value. -Automatic gap control means, load current sensor 32 for detecting the load current value of the main motor 44, and control reference load current value or control reference removal rate value of the hulling roll automatic gap control means The control reference value appropriateness determining means for determining whether or not the control reference value appropriateness determining means is outside the range by taking in every predetermined time A roll gap adjusting device for a hulling and sorting machine, comprising: a new control reference value setting means for newly setting a control reference value within an appropriate range of the adequacy determining means.