JPH0256952B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention separates and sorts grains into brown rice, paddy, and mixed rice while the grains flow down on the sorting plate by swinging a sorting plate tilted back and forth and left and right, for example. This invention relates to an automatic control device for a swinging sorter.

Conventionally, as shown in Japanese Patent Application Laid-Open No. 55-81769, there has been a technique in which a partition adjustment sensor is provided to automatically control the position of a partition plate.

However, in the conventional technology described above, since the sorting conditions of the sorting plates are constant, when the mixing ratio of paddy changes greatly, it is not possible to respond sufficiently by controlling the position of the partition plates alone, and it is difficult to properly sort the rice. There were problems such as not being able to do it.

Furthermore, as shown in Japanese Patent Application Laid-Open No. 54-116772, there is a technology that automatically adjusts the inclination angle of the sorting plate by installing an angle adjustment sensor. Since it is easy to change greatly, it is possible to quickly respond to large changes in the rice mixture ratio, but there are problems in that it is not easy to follow slightly changing sorting conditions.

However, the present invention includes a partition adjustment sensor that detects the separation status of grains on the upper surface of the sorting plate, and a partition adjustment member that controls the position of the partition plate based on the detection result of the sensor, and also adjusts the inclination of the sorting plate. In an automatic control device for a swing sorting machine that is equipped with an angle adjustment member that changes the angle, a partition position sensor that detects the position of the partition plate and controls the operation of the angle adjustment member is provided, and the detection value level of the partition adjustment sensor is determined. An inclination angle control regulating member is provided to restrict the angle adjustment member control, and when the detection value level of the partition adjustment sensor is below a predetermined value, only the partition adjustment member control is performed; The present invention is characterized in that the partition adjustment member control and the angle adjustment member control are performed substantially simultaneously when the angle is greater than a predetermined value.

Therefore, small changes in the detection value level of the partition adjustment sensor, which is low, can be dealt with only by controlling the partition adjustment member, and large changes, in which the detection value level of the sensor is high, can be dealt with by controlling the partition adjustment member and the angle adjustment member. Therefore, it is possible to perform sorting work by effectively utilizing the respective advantages of adjusting the partition plate and adjusting the inclination angle of the sorting plate, and it is possible to easily improve the ability to follow minute changes in the sorting situation and the maneuverability to deal with large changes. Since the inclination angle of the sorting plate is changed by detecting the position of the partition plate, it is possible to maintain the partition plate within a predetermined range and easily prevent a drop in sorting efficiency. Since the angle is controlled, a sensor for detecting the separation status of sorted grains can be omitted, and the detection mechanism for controlling the angle of the sorting plate can be simplified and costs can be reduced more easily than in the past. An embodiment of the present invention will be described below in detail with reference to the drawings.

Fig. 1 is an overall side view of the swing sorting machine according to the present invention, and Fig. 2 is a plan view of the same. 4 is a mixed rice tank for storing grains after hulling; 5 is the tank 4;
A supply tank that distributes and supplies grains to each sorting plate 3;
Reference numeral 6 denotes a discharge gutter for discharging the grains after sorting, and the grains are discharged from the tank 4 through the supply tank 5 to each sorting plate 3.
The grains supplied above are separated and sorted into brown rice and paddy by the singing motion of the device 2 on the way down, and are taken out to a delivery chute 7 via a discharge gutter 6.

FIG. 3 is an explanatory diagram of the drive unit of the swing sorting device 2, in which reference numeral 8 indicates a swing drive motor, and 9 indicates a counter interlockingly connected to the motor 8 via a V-pulley 10 and a belt 11. A pulley, 12 is a counter pulley shaft, 13 is a singing drive pulley that is interlocked and connected to the counter pulley 9 via a V-belt 14, and 15 is a bracket 16 and shaft 1 to the machine frame 1.
A drive motor for tilt angle adjustment, which is a tilt angle control mechanism, is pivotally supported via 7, and 18 is the motor 1.
5 is a screw shaft drivingly connected to the screw shaft 5; 19 is a first rocking plate for tilt adjustment whose base end is supported on the rotation support shaft 20 and the distal end is connected to the screw shaft 18 via a pivot shaft 21 and an engaging member 22; A second swing plate for inclination adjustment whose base end is fixed to the support shaft 20; 24 is the second swing plate 2;
a proximal shaft for inclination adjustment connected to and supported by the distal end of 3, 25;
27 is a right swinging arm that swingably supports one end on the base shaft 24 and swingably connects the other end to the sorting device 2 via a shaft 26; A drive motor for swing angle adjustment is swingably supported via a shaft 29, and 30 is the motor 27.
A screw shaft 31 is drivingly connected to the support shaft 3 whose base end is rotated.
2, a swing angle adjusting plate 36 is connected to the threaded shaft 30 via a pivot 33 and an engaging member 34, and has a tip supporting the rotating shaft 35 of the pulley 13; Shion pulley,
37 is an eccentric wheel body 38 fitted to the rotating shaft 35
39 is a balance weight attached to the rotating shaft 35; 40 is a crank plate 37 whose intermediate portion is rotatably connected to the distal end of the crank plate 37 via a pivot 41; one end is connected via a support shaft 42; It is a left swinging arm whose other end is swingably connected to the sorting device 2 via a shaft 43 to the machine frame 1, and the sorting device 2 supported by the swinging arms 25, 40 is connected to the rotating shaft 35. , the shaft 2 by the driving force transmission action of the motor 8 via the wheel body 38 and the crank plate 37.
4 and 42 as fulcrums, and adjust the left and right inclination angle α of the sorting device 2 by adjusting the position movement of the shaft 24 by driving the motor 15.
Further, the swing angle θ of the sorting device 2 is adjusted by adjusting the position movement of the rotary shaft 35 by driving the motor 27.

As shown in FIGS. 4 and 5, the sorting device 2
Each sorting plate 3 is provided in a plurality of stages on the frame 14, and the upper surface of the sorting plate 3 is formed into a resistive rough surface having a plurality of concave depressions. In other words, the angle of inclination β is
The grains distributed from the tank 4 to the front and back inclined upper ends of these sorting plates 3 flow down to the lower end of the slope. During this period, due to the rocking motion, a brown rice layer A is formed on the left rocking upward side of the sorting plate 3.
However, the structure is such that the rice layer B is on the right swinging downward side, and the mixed rice layer C is separated and concentrated in the middle and flows down.

In addition, a brown rice partition plate 45 for separating the brown rice layer A and the mixed rice layer C and a partition plate 46 for separating the mixed rice layer C and the paddy layer B are provided at the downstream end of the sorting plate 3. The brown rice group separated by 45 is transferred to the brown rice gutter 6a of the discharge gutter 6 via each downstream guide plate 44a, 45a, and the mixed rice group separated by the brown rice partition plate 45 and paddy partition plate 46 is transferred to each downstream guide plate. 4
Mixed rice gutter 6b of discharge gutter 6 via 5b, 46b
Furthermore, the rice grains separated by the rice partition plate 46 are dropped into the rice trough 6c of the discharge trough 6 via the downstream guide plate 46b, and taken out to the delivery chute 7.

Furthermore, the brown rice and paddy partition plates 45 and 46 each have a pair of upper and lower identical guide rods 49 that connect and fix the respective back connecting plates 47 and 48 to the frame body 44.
50 through respective guides 51..., 52... so as to be slidable left and right, and these connecting plates 47, 4
8 are integrally connected to each other via a distance adjusting bolt 53 and a long hole 54 so that the distance can be adjusted.

Furthermore, the brown rice partition plate 45 is movably supported by a partition adjustment motor 55, which is a partition position control mechanism installed in the frame body 44, via a rotating screw shaft 56 and an engaging member 57. The brown rice and paddy partition plates 45 and 46 are configured to be integrally displaced left and right by forward and reverse driving.

Further, the brown rice gutter 6a and the mixed rice gutter 6b are connected to the brown rice gutter 6a and the mixed rice gutter 6b in the drop guide port 59 formed by the guide plate 44a and the flow guide plate 58 below the brown rice side of the brown rice partition plate 45.
An opening/closing shutter 60 that can be switched freely is provided via a rotating shaft 61, and this switching operation can be performed using the handle 6.
2 or a solenoid 63.

Furthermore, a fixed mounting plate 64 is connected to the upper end of the rice partition plate 46 to provide a mixed rice layer C which is a partition position control mechanism.
A photoelectric paddy sensor 65 is installed for detecting paddy in the mounting plate 64.
6 and a bolt 67 so as to be adjustable in left and right movement, it irradiates the surface of the grain distribution plate in the boundary range where the paddy mixing rate changes rapidly at the grain flow outlet position of the sorting plate 3, and receives the reflected light. The system is configured to detect the amount of paddy mixed in from the difference in reflection between brown rice and paddy.

On the other hand, the brown rice partition plate 45 supports a partition position detection rack 69 via a fixing member 68,
The rack 69 is engaged with a pinion gear 71 which is connected to a potentiometer 70 for detecting the position of the partition, so that the positions of the partition plates 45 and 46 can be detected. Further, an end detection rod 72 is fixed to the fixing member 68, and the partition plate 45,
When 46 reaches the end of left and right movement, this rod 7
2 to the left and right end detection switches 73 and 74 that stop the drive of the motor 55, and the partition plates 45 and
The structure is designed to stop the movement of 46.

FIG. 6 shows an automatic control circuit for the partition plates 45 and 46, in which the paddy sensor 65 is electrically connected to a control circuit 78 via a differential amplifier 77 including a buffer circuit 75 and a reference light amount regulator 76. , the control circuit 78 includes a forward and reverse drive circuit 79,
When the motor 55 is connected through the controller 80 and the light amount detected by the sensor 65 increases or decreases depending on the proportion of paddy mixed in, and a difference in light amount occurs between the light amount and the reference light amount set by the regulator 76. , the control circuit 7
8 outputs a forward/reverse signal for the motor 55, and appropriately drives the motor 55 forward/reverse to control the positions of the partition plates 45, 46 so that the reference light amount of the regulator 76 and the detected light amount of the sensor 65 match. It is configured as follows.

FIG. 7 shows an automatic control circuit for the inclination angle α of the sorting plate 3, in which the potentiometer 70 is electrically connected to a comparator 83 equipped with a partition position upper limit adjuster 81 and a partition position lower limit adjuster 82. The comparator 83 is connected to relay coils 86 and 8 for forward and reverse operation of the drive motor 15 via drive circuits 84 and 85.
7 are electrically connected to each other. Also, the relay switches 86a, 8 of the relay coils 86, 87
7a is the forward/reverse power supply relay coil 8 of the motor 15.
8 and 89 respectively, and when the relay switch 86a or 87a is turned on, the relay coil 88 or 89 is energized, and the power supply relay switch 88a or 89a is turned on to drive the drive motor 15 in the forward or reverse direction. Sorting board 3
The structure is such that the inclination is raised or lowered, that is, the inclination angle α is made large or small. Further, between the drive circuits 84, 85 and the relay coils 86, 87, a manual switch 9 for tilting and lowering the sorting plate 3 is installed.
0 and 91 are interposed so that the inclination angle α of the sorting plate 3 can be manually adjusted by these switches 90 and 91. Furthermore, an operating power switch 92 for automatic/manual switching of the automatic control circuit is provided on the input side of the drive circuits 84, 85.

On the other hand, the paddy sensor 65 is circuit-connected to the comparator 83 via a timer 93 or a level detector 94, and when a change occurs in the detected value of the paddy sensor 65, the comparator 83 is connected to the paddy sensor 65 for a certain period of time via the timer 93. The inclination angle α of the sorting plate 3 is adjusted, or when an abnormal level value higher than a certain level is detected in the detected value by the paddy sensor 65, the range of the inclination angle α of the abnormal level value is adjusted via the detector 94. The structure is such that adjustment can be performed simultaneously with position control of the partition plate 3. Note that 95 and 96 in the figure are limit switches that detect the end of movement of the tilt angle adjustment of the sorting plate 3, and when the tilt angle α of the sorting plate 3 is displaced to the maximum angle or the minimum angle, this automatic control is activated. It is designed to prevent this.

As is clear from the above description and Figure 7,
The partition is equipped with a paddy sensor 65 that is a partition adjustment sensor that detects the separation status of grains on the upper surface of the sorting plate 3, and is a partition adjustment member that controls the position of the partition plates 45 and 46 based on the detection result of the paddy sensor 65. In an automatic control device for a swing sorting machine, which is provided with an adjustment motor 55 and an inclination angle adjustment drive motor 15 that is an angle adjustment member that changes the inclination angle α of the sorting plate 3, the positions of the partition plates 45 and 46 are detected. A potentiometer 70 is provided as a partition position sensor for controlling the operation of the drive motor 15 for adjusting the tilt angle.
A level detector 94 is provided as a tilt angle control regulating member that determines the detection value level of the partition adjustment paddy sensor 65 and limits the control of the drive motor 15 for tilt angle adjustment. When the level is below a predetermined value, only the partition adjustment motor 55 control is performed, and when the detected value level of the partition adjustment paddy sensor 65 is above a predetermined value, the partition adjustment motor 55 control and the tilt angle adjustment drive motor 15 control are performed. The configuration is such that the operations are performed almost simultaneously.

The present embodiment is constructed as described above, and the hulled grains supplied from the mixed rice tank 4 to each sorting plate 3 via the supply tank 5 flow down along the inclination angle β. On the way, it is stirred by the rocking movement of the sorting plate 3 and the rough sorting surface of the sorting plate 3, and due to the difference in specific gravity and friction coefficient, the brown rice layer A is on the shaking side at the upper end of the inclination angle α, and the brown rice layer A is on the shaking side. The rice layer B is concentrated in the rice layer B, and the mixed rice layer C is concentrated in the middle area. The partition plate 4 is provided at the downstream end.
The sensor 65 controls the position of these partition plates 45 and 46.
This is done in

During the movement of the partition plates 45 and 46 during such work, the partition plates 45 and 46 move more than a certain range to the left or right, and the value of the potentiometer 70 reaches the upper or lower limit set by the regulators 81 and 82. When the value exceeds the set value, the comparator 83 outputs a forward/reverse signal for the drive motor 15, and the drive circuit 84,
85 to excite the relays 86 and 87 to turn on the relay switches 86a and 87a, and by turning on the relay switches 86a and 87a, the power relay coils 88 and 89 are energized and the power relay switch 88a is turned on. , 89a are turned on to rotate the drive motor 15 in the normal or reverse direction to adjust the inclination angle α of the sorting plate 3 from a steep angle to a gentle angle so that the value of the potentiometer 70 is set to the upper limit value of the regulators 81 and 82. As a result, the fluctuation of the grain separation boundaries of brown rice and paddy is always maintained within a certain range, and the partition movement of the partition plate 3 is controlled to the left or right based on the fluctuations of the grain separation boundaries of brown rice and paddy. It is possible to always carry out sorting work within the upper and lower limits on the right, and it is possible to always perform stable and accurate sorting work without being affected by changes in various conditions such as grain moisture content, removal rate, or supply amount.

In addition, by inputting the timer 93 to the comparator 83, when a change occurs in the detected value of the paddy sensor 65, the comparator 83 outputs a forward/reverse signal for the motor 15 for a certain period of time at the same time as automatic control of the partition plate 3. The motor 15 is then rotated in the forward or reverse direction, and simultaneous control of the inclination angle control and partition plate control makes it possible to optimize the work, and in this case, excellent responsiveness is achieved.

Furthermore, by inputting the level detector 94 to the comparator 83, the partition plate 45,
46 is adjusted only by horizontal movement under automatic control, and when an abnormal level value higher than a certain level is detected in the detected value of the paddy sensor 65, that is, an abnormal detected value higher than the highest or lowest limit value of the reference setting level. , the motor 15 corresponding to the abnormal level value.
Control is performed by outputting a forward/reverse signal from the comparator 83, and when the detected value of the paddy sensor 65 is within a certain level, the partition plates 45 and 46 are controlled alone, and when the detected value of the paddy sensor 65 is at a certain level. When the above is included, it is possible to optimize the work by controlling the partition plates 45 and 46 and controlling the inclination angle α.

As is clear from the above embodiments, the present invention includes a partition adjustment sensor 65 that detects the separation status of grains on the upper surface of the sorting plate 3, and controls the positions of the partition plates 45 and 46 based on the detection result of the sensor 65. In an automatic control device for a swing sorting machine, which is provided with a partition adjustment member 55 for changing the angle of inclination α of the sorting plate 3 and an angle adjustment member 15 for changing the inclination angle α of the sorting plate 3, the angle adjustment member 15 is adjusted by detecting the positions of the partition plates 45 and 46. In addition to providing a partition position sensor 70 for controlling the operation, the detection value level of the partition adjustment sensor 65 is determined to adjust the angle adjustment member 15.
A tilt angle control regulating member 94 is provided to limit the control,
When the detection value level of the partition adjustment sensor 65 is below a predetermined value, only the partition adjustment member 55 control is performed, and when the detection value level of the partition adjustment sensor 65 is above a predetermined value, the partition adjustment member 55 control and the angle adjustment member are performed. 15 control is performed almost simultaneously, and a small change in the detection value level of the partition adjustment sensor 65 is low can be dealt with only by the partition adjustment member 55 control, and a large change in the detection value level of the sensor 65 is high. Partition adjustment member 55 and angle adjustment member 1 for changes
5. Therefore, the partition plates 45, 4
It is possible to carry out sorting work by effectively utilizing the respective advantages of adjustment 6 and adjustment of the tilt angle of sorting plate 3, and it is possible to easily improve the ability to follow minute changes in the sorting situation and the maneuverability to respond to large changes. , the inclination angle α of the sorting plate 3 is changed by detecting the positions of the partition plates 45 and 46.
6 within a predetermined range to easily prevent a drop in sorting efficiency, and because the angle of the sorting plate 3 is controlled simply by detecting the positions of the partition plates 45 and 46, the sensor detects the separation status of sorted grains. This makes it possible to simplify the detection mechanism for controlling the angle of the sorting plate 3 and reduce costs more easily than in the past.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is an overall side view, FIG. 2 is an enlarged view of the same plane, and FIG. 3 is an enlarged view of the same plane.
The figure is a front view of the same, Figure 4 is a front explanatory view of the main part, Figure 5 is a front view of the main part,
The figure is a partial side view of the main part, FIG. 6 is a control circuit diagram of the partition plate, and FIG. 7 is a circuit diagram of the inclination angle control circuit of the sorting plate. 3... Rocking sorting plate, 45, 46... Partition plate, 15...
Inclination angle control mechanism (motor), 55... position control mechanism (motor), 65... position control mechanism (hull sensor).

Claims (1)

[Claims] 1. A partition adjustment sensor 65 that detects the separation status of grains on the upper surface of the sorting plate 3 is provided, and a partition adjustment member 55 that regulates the position of the partition plates 45 and 46 based on the detection result of the sensor 65 is provided. In an automatic control device for a swinging sorter, which is provided with an angle adjusting member 15 for changing the inclination angle α of the partition plates 45, 4,
A tilt angle control regulating member 94 that determines the detection value level of the partition adjustment sensor 65 and limits the control of the angle adjustment member 15 is provided.
When the detection value level of the partition adjustment sensor 65 is below a predetermined value, only the partition adjustment member 55 control is performed, and when the detection value level of the partition adjustment sensor 65 is above a predetermined value, the partition adjustment member 55 control is performed. An automatic control device for a swing sorting machine, characterized in that it is configured to control the angle adjustment member 15 substantially simultaneously.