JP3617111B2 - Roll gap adjusting device for hulling sorter - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to an improvement in a gap adjusting device for a hulling roll.
[0002]
[Prior art]
In the hulling device constituted by a pair of hulling rolls, hulling roll automatic gap control means for controlling the gap between the pair of hulling rolls based on the load current value reference or the removal rate reference is provided. There is something to prepare.
[0003]
[Problems to be solved by the invention]
In the conventional apparatus, if the control reference load current value of the hulling roll automatic gap control means is destroyed due to some noise factor, there is a problem that the automatic hulling roll automatic gap control cannot be continued. Accordingly, the present invention is intended to solve such problems.
[0004]
[Means for solving problems]
The technical means of the present invention for solving such technical problems includes a pair of hulling rolls 3 and 3 for hulling, a main motor 44 for driving the hulling rolls 3 and 3, and the main motor 44 A load current sensor 32 for detecting the load current value of the load, an initial gap setting control means for setting an initial gap between the hulling rolls 3 and 3, and a gap between the pair of hulling rolls 3 and 3 as the detected load current value. The automatic hulling roll automatic gap control means for adjusting the opening and closing so that becomes a preset reference load current value, and the control reference load current value of the hulling roll automatic gap control means is taken in every predetermined time and within an appropriate range Control reference value appropriateness determining means for determining whether or not the control reference value appropriateness determining means is out of range, and a control reference value within an appropriate range of the control reference value appropriateness determining means. New control reference value for newly setting A constant section, and a configuration of a roll gap adjusting device of hulling sorter consisting of.
[0005]
[Action]
After the initial gap of the pair of hulling rolls 3,3 is set, if rice is supplied hulling operation is started, the pair of hulling rolls 3, 3 are started and clearance control according to the load current value criterion The load current value of the main motor 44 for driving the hulling rolls 3 and 3 is detected by the load current sensor 32 and compared with the control reference load current value so that the detected load current value becomes the control reference load current value. The opening and closing of the roll gap is controlled.
[0006]
During the control of the roll gap as described above, the control reference load current value is taken into the control reference value appropriate determining means at every predetermined time and it is determined whether or not it is within the appropriate range. Therefore, if the control reference value appropriateness determining means determines that the control reference load current value is within the appropriate range, the roll gap control based on the load current value reference is continued as it is, and if the control reference value appropriate value determining means is 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 gap control is stopped. Then, for example, a standard new control reference load current value within the appropriate range of the control reference value appropriate determination means is newly set, and the roll gap control is restarted based on the new control reference load current value.
[0007]
【Example】
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 the hull sorter will be described with reference to FIG. Reference numeral 1 denotes a hulling portion, and this hulling portion 1 includes a hull hopper 2, a pair of hulling rolls 3, 3, and the like. 4 is a sliding rice wind selection path, and the rice crushed from the rice hull portion 1 is wind-selected by the sorting wind generated by the suction suction dust remover 5 in the front. It is discharged out of the machine through the cylinder 6, and the mixed rice of heavy brown rice and rice bran is dropped and sorted into the lower crushed rice receiving bowl 7. The mixed rice that has been fall-sorted to the slid-off rice receiving basket 7 is cerealed by the mixed rice cerealing machine 8, and then supplied to the conveyance start end of the supply basket 14 on the rotary sorting cylinder 11 side through the mixed rice hopper 9. This is a configuration.
[0008]
Reference numeral 10 denotes a sorting case. In the sorting case 10, the sorting start end side (FIG. 1) is arranged so that a rotating sorting cylinder 11 having a large number of potholes on its inner peripheral surface rotates around the horizontal axis. The right side) and the sorting end side (left side in FIG. 1) are rotatably supported by the drive rollers 12, 12,. In the rotary sorting cylinder 11, a supply basket 14 on which a supply spiral 13 is supported and a brown rice basket 16 on which a brown rice spiral 15 is supported are horizontally mounted.
[0009]
When the supply rice bran 14 and the brown rice bran 16 are disposed in the rotary sorting cylinder 11, as shown in FIG. 2, the supply rice bran 14 is swung up on the rotary sorting cylinder 11, and the brown rice bran 16 is rotated. The sorting cylinder 11 is arranged on the side rotating from the upper side to the lower side. In this supply basket 14, the rice that has been scooped low in the hole of the rotary sorting cylinder 11 and the mixed rice of some brown rice are dropped and sorted, and further transferred to the conveying terminal side of the supply basket 14 by the supply spiral 13. Thus, the supply basket 14 has a function of receiving the mixed rice.
[0010]
The terminal end side of the brown rice bran 16 communicates with the brown rice receiving pad 19 via the brown rice flow lower cylinder 17 and the brown rice flow grain plate 18. The unpolished rice received by the unpolished rice bran 16 is wind-selected while falling to the unpolished rice receiving bowl 19 through the unpolished rice falling pipe 17 and the unpolished rice cereal board 18, and is further passed from the unpolished rice receiving bowl 19 to the unpolished rice masher 20. The configuration is taken out of the machine. Below the sorting terminal side of the rotary sorting cylinder 11, a basket receiving rod 21 is disposed. The cocoon receiving machine 21 is provided with a mashing machine 22, and the upper end of the mashing machine 22 is connected to the cocoon reduction hopper 23 of the hulling unit 1. Thus, the grain mainly composed of the sorted rice that has flowed to the sorting end side of the rotary sorting cylinder 11 falls to the cocoon receiving bowl 21, and further passes through the mashing machine 22 and the cocoon reduction hopper 23. It is the structure which is returned to the sliding part 1 and re-cooked again.
[0011]
Next, the configuration 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 include a hulling roll 3 that rotates at a fixed position on the left side, and a right hulling roll 3 that is pivotally supported by a swinging arm and adjusted for movement. It consists of Reference numeral 45 denotes a roll clearance adjusting motor. When the roll clearance adjusting motor 45 is rotated forward or reversely, 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 rollers 3 and 3.
[0012]
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. A number of actuator groups and display device groups are connected to 25 via an output interface. Next, these connection relationships will be specifically described.
[0013]
The demolding rate upper switch 26, the demapping rate lower switch 27, the cylinder rotation height switch 28, the cylinder rotation low switch 29, the automatic / manual switch 30 for switching to automatic or manual operation, and the cylinder rotation number display device 50 include the rotation sorting cylinder 11. A switch group of display changeover switches 31 for switching and displaying the rotation speed and the detected load current value, a load current sensor 32 for detecting the load current value of the main motor 44, a power supply voltage sensor 33, a power supply frequency sensor (R -T) 34, the sensor group of the power frequency sensor (ST) 35, the Glen sensor 37 for detecting the presence or absence of grains in the straw hopper 2, and the roll gap between the straw rolls 3 and 3. A roll deployment sensor 38 that detects a wide open state, a shutter sensor 39 that detects a fully closed state of the soot supply control valve 39a, a rotation sensor 40 that detects the number of rotations of the rotary sorting cylinder 11, a soot supply adjustment Sensor group of a valve opening sensor 41 comprising a potentiometer for detecting the opening degree of the valve 39a, a transistor open collector type scattering sensor 42 for detecting the grain raising state of the rotary sorting cylinder 11, Stop switches 43 are each connected to the control unit 25 via the signal conversion circuit 36.
[0014]
Further, the control unit 25, via a signal conversion circuit 36, a main motor 44 for driving the hulling sorter and a roll gap adjusting mode for adjusting the roll gap between the hulling rolls 3 and 3. A motor 45, a shutter opening adjusting motor 46 for adjusting the opening of the soot supply adjusting valve 39a, a cylinder rotation adjusting motor 47 for adjusting the rotation speed of the rotation selecting cylinder 11, and a communication device 48, respectively. Are connected. Further, the control unit 25 includes a display tube 49 for displaying characters, numbers, etc., a cylinder rotation number display device 50 for displaying the rotation number of the rotation selection cylinder 11, a current display LED 51, an LED display device 52, and a buzzer 53. They are connected.
[0015]
Next, the control panel 54 shown in FIG. 5 will be described. The control panel 54 includes, for example, a fluorescent display tube type display tube 49, a cylinder rotation speed display device 50, a current display LED 51, a display unit for displaying the presence or absence of defects in the hopper 2, a shutter opening / closing display unit, and a roll. Unfolded display section / LED display section 52a for displaying presence / absence of abnormality, LED display section 52b for displaying whether automatic operation or manual operation is performed, LED display section 52c for displaying roll unfolding, automatic / manual switch 30, unloading The lowering switch 27, the removal rate uppering switch 26, the cylinder rotation low switch 29 for adjusting the rotation speed of the rotation sorting cylinder 11 to be lowered, the cylinder rotation height switch 28 for adjusting the rotation speed of the rotation sorting cylinder 11 to be increased, and the display changeover switch 31. But each husband is provided.
[0016]
Next, the control contents of the CPU 25 will be described.
(1) First, the automatic / manual switch 30 is selected to the automatic side, and the run / stop switch 43 is operated to the drive side. Then, the main motor 44 is turned ON, and the rotating parts of the hull sorter are driven. Next, initial gap setting control for setting an initial gap between the hulling rollers 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 gap is adjusted to open and the load current sensor 31 detects a non-contact state of the hulling roll where the detected load current value does not change, the opening adjustment is stopped. Next, a roll gap closing command signal is output, the roll gap is closed and the load current sensor 32 detects an increase in the load current value, and confirms the slight contact between the hulling rollers 3 and 3. Then, the closing adjustment is stopped. Next, a roll gap opening command signal is output, and the roll gap adjusting motor 45 is adjusted to open for a predetermined time, and adjusted to a predetermined initial gap (for example, 1 mm).
[0017]
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 decreasing or the load current value higher than the no-load current value is detected. In such a case, an additional opening command signal is output from the control unit 25, and the detection result of the load current sensor 32 does not change or a load current value equivalent to the no-load current value is detected. When the gap between the three and the third gaps 3 and 3 is in a non-contact state, the additional opening command signal is stopped and the setting of the initial gap is completed.
[0018]
When the additional opening command signal is output, the load current value at the time of non-contact of the hulling roll when the roll gap is adjusted at the beginning of the initial gap setting control is not stored in the EEPROM 57. The reference load current value of the load may be written and stored, and non-contact of the roll gap may be determined by comparison with this value. When the initial gap is set, in the case of a conventional apparatus that does not have an additional opening adjustment process, when wear of the hulling rollers 3 and 3 progresses, the initial gap setting is completed in the contact state of the roll gap. In this case, the roll gap is closed and the rice roll roll is worn out early or the brown rice is crushed. was there. However, such an inconvenience can be solved by performing additional opening adjustment of the roll gap as described above.
(2) Next, the routine proceeds to shutter opening initial setting control for adjusting the initial opening of the soot supply control valve 39a. An opening command signal is output from the CPU 25 to the shutter opening adjustment motor 46, an initial opening setting for opening the soot supply control valve 39a to a predetermined valve opening (for example, 10 mm) is made, and the hulling operation is started. The
[0019]
If the valve opening sensor 41 does not detect a certain value indicating the predetermined valve opening even if a certain time has elapsed after the opening command signal is output from the CPU 25 to the shutter opening adjusting motor 46, the valve opening sensor 41 is determined to be abnormal. Then, the opening adjustment of the soot supply control valve 39a is stopped, and the operation is shifted to the later-described roll gap control based on the load current value reference, and the operation is continued. Thus, even if the valve opening sensor 41 becomes abnormal for some reason, the hulling operation can be continued and the work efficiency is improved.
[0020]
Next, a valve opening adjustment command signal for adjusting to the supply amount adjustment setting position of the soot supply adjusting lever (not shown) is output, and the soot supply adjusting valve 39a is changed and adjusted to a position corresponding to the set efficiency valve opening. The
(3) Next, the process proceeds to the roll gap control based on the load current value standard. 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. ), An opening (or closing) command signal is output to the roll gap adjusting motor 45, the gap between the hulling rolls 3 and 3 is adjusted to a predetermined amount opening side (or closing side), and the detected load current value The return to the control reference load current value is achieved. Further, if the detected load current value is within the range of the control reference load current value, no control command signal is issued, and the hulling operation is performed while maintaining the roll gap as it is. Instead of the roll gap control based on the load current value reference, the hulling roll gap may be controlled based on the removal rate reference.
[0021]
(4) Next, a description will be given of an appropriate range determination control of the control reference load current value performed in the roll gap control based on the load current value reference. At the time of controlling the roll gap based on the load current value reference (3) , the control reference load current value is taken into the control unit 25 every predetermined time and compared with the appropriate range reference load current value stored in the EEPROM 57. The If the value is within the proper range, the control is continued. If the value is outside the proper range, it is determined that the control reference load current value has been destroyed due to some noise factor, and the roll is determined. The gap control is stopped, and then, for example, a new control reference load current value corresponding to a standard removal rate of 85% is newly set and rewritten in the EEPROM 57. Thereafter, the low control based on this new control reference load current value is set. The gap control is resumed.
[0022]
Therefore, even when the control reference load current value is destroyed, the operation can be continued while automatically adjusting the roll gap, the operation operation is simplified and the work efficiency is improved. In the case where the control reference load current value is set at the start of work by rotating the removal rate setting dial (not shown) to a predetermined position, the control reference load current value is set again from the operation position of the removal rate setting dial. The control reference load current value at the start of work may be sequentially stored in the storage unit (or EEPROM 57) of the control unit 25, and the reference value is out of the proper range. May be configured to set a new control reference load current value based on a stored reference value (or an average value of several times) before destruction. In addition, it is applied to the roll gap control based on the removal rate standard, and it is similarly determined whether or not the control reference removal rate is within the appropriate range. It is good also as a structure which sets a rate.
[0023]
(5) Next, the appropriateness determination control of the power supply frequency sensor (RT) 34 and the power supply frequency sensor (ST) 35 will be described. When the power is turned on, a frequency of 50 Hz or 60 Hz is detected from the power frequency sensor (RT) 34 and the power frequency sensor (ST) 35 and input to the control unit 25. Then, the measurement ratio of the sensor is corrected with the detection frequency. The detection frequency from the power supply frequency sensor (RT) 34 and the power supply frequency sensor (ST) 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 automatic control operation, automatic control of the roll gap and the like can be continued.
[0024]
(6) Next, the abnormality detection control of the load current sensor 32 during the roll gap control based on the load current value reference will be described. When the roll gap is controlled based on the load current value reference, an opening or closing command is issued from the control unit 25 to the roll gap adjustment motor 45, and the roll gap is controlled to open and close. If the detected load current value of the load current sensor 32 does not change even after a lapse of time, it is determined that the load current sensor 32 is abnormal. Thereafter, the control is stopped during the hulling roll, the output of the control command signal to the roll gap adjusting motor 45 is stopped, and an abnormality is displayed on the display tube 49.
[0025]
(7) Next, the overload prevention control during the roll gap control based on the load current value reference will be described. At the time of the roll gap control based on the load current value reference, the operator operates the desorption rate up switch 26 and the desorption rate down switch 27 (also, any other switch is turned on to remove the roll. The control reference load current value is switched between high and low when the rate switch 26 or the removal rate switch 27 is operated). At that time, when the detected load current value exceeds the overload reference value when it is switched to the high side, the roll gap closing control is immediately stopped, and the display tube 49 displays “Overload reference value exceeded. 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.
[0026]
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 being dropped, and the reference value setting can be changed. Becomes easy. In addition, when applied to the roll gap control based on the removal rate reference, the control reference release rate is similarly changed to high and low, and the setting is changed to the high side, so that the detected load current value exceeds the overload reference value. In such a case, the same processing as described above may be performed.
[0027]
(8) Next, system setting performed at the time of product shipment will be described. In this system setting, while the operation / 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 depletion rate up switch 26 is turned ON. Is started. In relation to the selection of the system setting, when the function conversion of the switch group is performed, for example, when the desorption rate upper switch 26 or the desorption rate lower switch 27 is turned ON, the system setting item is, for example, the model setting. Items such as check function, overload current value rate correction, scattering position adjustment correction of rotation sorting cylinder 11, original power supply voltage correction, load current value correction, etc. are switched in ascending or descending order, and a predetermined item can be selected. is there.
[0028]
When the type setting in the system setting is selected in this way, one of a plurality of types is displayed on the display tube 49, and then, for example, every time the cylinder rotation height switch 28 or the cylinder rotation low switch 29 is operated. The other plurality of models are sequentially switched in ascending or descending order, the model displayed by the final switch operation is selected and stored in the EEPROM 57, and various control reference values are determined based on the model. Roll clearance control based on the load current value reference is performed.
[0029]
The model is set as described above, but if it is not set, the display tube 49 displays “Model not set. Please set the model”, and manual operation and automatic operation are prohibited. In this configuration, the output of drive command signals from the control unit 25 to various motors is prohibited. In place of this embodiment, manual operation may be performed, but automatic operation may not be possible.
[0030]
(9) The system setting check function will be described. When the check function is selected in the same manner as in the above (8) , a short check signal is sequentially output from the control unit 25 to the plurality of LED display devices 52 and current display LEDs 51 on the control panel 54 to determine whether there is an abnormality. In addition, a long check signal is output to the plurality of motors, and the presence or absence of abnormality of the motors is checked. Since it is configured in this way, L, E, and D types can be checked sufficiently because they are visually judged even when they are lit short, and motors can be checked with a long output, thus preventing relay welding. The check can be completed in a relatively short time, and it becomes efficient.
[0031]
Next, the operation of FIG. 1 will be described. The cocoon stuck to the heel hopper 2 is supplied to the pair of pallet rolls 3 and 3 and crushed. The crushed rice is fed to the lower crushed rice wind selection path 4 and wind-selected, and the light rice husks are discharged to the outside through the suction dust remover 5 and the dust discharge cylinder 6, and The mixed rice of heavy brown rice and rice bran is fall-sorted to the lower crushed rice tray 7. Next, the mixed rice that has been fallen and sorted into the sliding rice receiving pad 7 is pulverized by the mixed rice cerealing machine 8 and supplied to the mixed rice hopper 9, and further inside the supply pad 14 from the transport start end to the transport end. And is supplied to the sorting start end side of the rotary sorting cylinder 11.
[0032]
The mixed rice supplied to the sorting start end side of the rotary sorting cylinder 11 is screened while being inserted into the pits on the inner peripheral surface, and the small brown rice is scooped up and dropped into the brown rice bran 16 for sorting. In addition, large rice cakes and some brown rice are scooped low and fall-sorted into the supply rice cake 14. In this way, the brown rice selected as the brown rice bran 16 is transported through the brown rice bran 16 to the sorting terminal side of the rotary sorting cylinder 11 by the brown rice spiral 15, and then passes through the brown rice flow down cylinder 17 and the brown rice flow grain plate 18. Then, while being wind-selected, it falls to the brown rice receiving bowl 19 and is further taken out via the brown rice cerealing machine 20.
[0033]
The mixed rice that has fallen on the supply trough 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. The finished grain falls to the straw catcher 21 and is further reduced to the straw rolls 3 and 3 through the straw mill 22 and the straw reduction hopper 23, and is again shattered. The
[0034]
[Effects of the invention]
Thus, according to the present invention, for example, even when the control reference load current value is destroyed during the control of the roll gap based on the load current value reference, the new control reference load current value is newly set and the low The automatic control of the gap between the cylinders can be continued, making the operation easier and easier and improving the work efficiency.
[Brief description of the drawings]
[Fig. 1] Cut side view and cut rear view of a hull sorter [Fig. 2] Cut side view of the main part [Fig. 3] Block diagram [Fig. 4] Block diagram [Fig. 5] Front view of the panel [Fig. Flow chart [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Rice hull part 2 Rice huller 3 Rice hull roll 4 Sliding rice wind selection part 5 Suction dust removal machine 6 Dust removal cylinder 7 Sliding rice receiving bowl 8 Mixed rice cerealing machine 9 Mixed rice hopper 10 Sorting case DESCRIPTION OF SYMBOLS 11 Rotation | separation sorting cylinder 12 Drive roller 13 Supply spiral 14 Supply basket 15 Brown rice spiral 16 Brown rice basket 17 Brown rice falling pipe 18 Brown rice cereal board 19 Brown rice receiving machine 20 Brown rice graining machine 21 Rice cake receiving machine 22 Reduction hopper 24 Roll gap adjusting means 25 Control unit 26 Depth rate up switch 27 Depth rate down switch 28 Cylindrical rotation height switch 29 Cylindrical rotation low switch 30 Automatic / manual switch 31 Display changeover 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 deployment sensor 39 Shutter sensor 39a 籾 Supply control valve 40 Rotation sensor 41 Valve opening sensor 42 Scatter sensor 43 Run / stop switch 44 Main motor 45 Roll clearance adjustment motor 46 Shutter opening adjustment motor 47 Cylindrical rotation adjustment motor 48 Communication device 49 Display tube 50 Cylindrical rotation speed display device 51 Current display LED
52 LED display 53 Buzzer
54 Control panel 57 EEPROM

Claims (1)

A pair of hulling rolls 3 and 3 for hulling, a main motor 44 for driving the hulling rolls 3 and 3, a load current sensor 32 for detecting a load current value of the main motor 44, and the hulling roll 3 , 3 initial gap setting control means for setting an initial gap, and a hulling roll for adjusting opening / closing of the gap between the pair of hulling rolls 3, 3 so that the detected load current value becomes a preset reference load current value An automatic gap control means , a control reference value appropriate judgment means for judging whether or not the control reference load current value of the hulling roll automatic gap control means is taken at a predetermined time and within an appropriate range, and the control A new control reference value setting means for newly setting a control reference value within the appropriate range of the control reference value appropriateness determination means in relation to the determination that the reference value appropriateness determination means is out of the range. Roll gap adjustment device for the machine.

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