JPS644464Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial application field" This invention swings and drives a sorting plate tilted back and forth as well as left and right, and the grains on the sorting plate are transferred to the upper end of the left and right slopes at the ends of the flow forward and backward. The present invention relates to a grain oscillating sorter that concentrates rice grains toward the lower end and separates and takes out the grains.

"Prior Art" Conventionally, as shown in Japanese Patent Application Laid-open No. 53-627553, there has been a technology in which a switching shutter is provided to selectively discharge grains falling from the swinging side of a swinging sorting plate into a brown rice gutter or a mixed rice gutter. Ta.

"Problems to be Solved by the Invention" However, the above-mentioned conventional technology detects the amount of grains in a mixed rice tank that supplies grains to the oscillating sorting plate, and based on the change in the amount of grains in this tank, Since the shutter that supplies grains only to a specific sorting plate and the switching shutter are controlled respectively, even if the amount of grains in the mixed rice tank exceeds the set amount, the shaking of the sorting plate is not performed. When the inclination angle of the moving direction is too small, or when the swinging angle of the sorting plate is too large, even the paddy along with the brown rice moves to the swinging side of the sorting plate, but the amount of grain supplied to the sorting plate is greater than the setting. There were problems such as the above-mentioned movement of paddy toward the shaking side could not be detected, and it was not possible to easily achieve safety and simplification of the adjustment operations of the tilt angle and rocking angle of the sorting plate. .

In addition, as shown in Japanese Utility Model Application Publication No. 177886/1986, there is a technology in which a sensor is installed to detect the spread of grains on a sorting plate, but the sensor is not installed in the partition plate that extracts finished brown rice from the sorting plate. Therefore, when the grains move toward the shaking side of the sorting plate, the sensor also moves in the same direction, and at the end of the sorting operation when the speed of paddy movement towards the shaking side increases, the tracking of the partition plate can be properly achieved. First, it is easy for paddy to get mixed into the finished brown rice from the sorting board, and the positions of the partition plate and sensor are not constant at the start of the sorting process, so it is not possible to automatically set the time to start taking out the finished brown rice, which makes it difficult for the operator to take out the finished brown rice. There were problems such as requiring confirmation and making it difficult to simplify operations.

There is also a technology that detects the paddy contained in brown rice from the shaking side of the sorting plate and switches the shutter, but even if the shutter is switched to the circulation side after detecting the paddy contained in the brown rice, the shutter does not work. Before switching,
There is a problem in which brown rice containing paddy is removed within the time required to switch the shutter, making it impossible to detect the contamination of paddy early, making it impossible to prevent paddy from being included in the brown rice, etc. There was a functional problem.

``Means for Solving the Problems'' However, the present invention includes a paddy sensor that detects grains on the oscillating sorting plate, and a system that selectively discharges the grains taken out from the oscillating side of the sorting plate into a brown rice gutter or a mixed rice gutter. In the sorting machine equipped with a switching shutter, the sensor is disposed on the upper surface of the swinging side end of the sorting plate,
The shutter is moved to the brown rice discharge side based on the sensor output by detecting paddy on the shaking side of the sorting plate, and the shutter is moved to the mixed rice circulation side based on the sensor output by detecting the plate surface on the shaking side of the sorting plate. It is characterized in that it is configured to perform switching control.

"Function" Therefore, by detecting the rice grains or the plate surface on the upper surface of the swinging lower side of the sorting plate with the sensor, it is possible to confirm the amount of grains to be sorted on the sorting plate and at the same time to confirm whether the sorting conditions such as the inclination angle and swing angle of the sorting plate are appropriate. Compared to the conventional technology that detects the amount of grains supplied to the sorting plate, the initial setting of the sorting conditions such as adjustment of the angle of the sorting plate can be properly performed, making it safe to handle. Also, compared to the conventional technology that detects the spread of grains on the sorting plate, it is possible to automatically set the time to remove the finished brown rice at the start of the sorting operation. The sorting conditions of the sorting plate are checked comprehensively with the sensor, and the finished brown rice is discharged from the brown rice trough to the outside of the machine only when all the sorting conditions are appropriate. Moreover, this is significantly faster than the conventional discrimination between brown rice and rice grains. Because it detects the rice grains and the sorting plate surface, which cause large differences, it is possible to easily improve the detection accuracy of the sensor and simplify the structure of the detection control circuit, etc., and compared to the conventional technology which detects the rice grains contained in the brown rice after it has fallen from the brown rice chute and switches the shutter, the sensor can detect when the rice grains move more than a set amount to the upper rocking side on the lower side of the sorting plate, so that the sensor output can detect a sorting situation in which the rice grains move abnormally to the upper rocking side and fall from the brown rice chute before they fall from the brown rice chute, and the shutter can be controlled to switch to the mixed rice circulation side before the rice grains fall from the brown rice chute, making it possible to prevent the mixing of rice grains into the brown rice chute by early detection, and thus easily improving the sorting function and workability compared to the conventional technology.

"Embodiment" An embodiment of the present invention will be described below in detail based on aspects.

Figure 1 is a side view of the whole, and Figure 2 is a plan view of the same. In the figure, 1 is the main machine frame, 2 is supported on the machine frame 1 so as to be able to swing, and grains are sorted into brown rice and paddy. 4 is a mixed rice tank for storing the grains after hulling; 5 is a supply tank that distributes and supplies the grains in the tank 4 to each sorting plate 3; Reference numeral 6 denotes a discharge gutter for discharging the grains after sorting, and the grains supplied from the tank 4 via the supply tank 5 onto each sorting plate 3 are collected by the rocking motion of the device 2 on the way down to brown rice. The paddy and paddy are separated and sorted and taken out to a delivery chute 7 via a discharge gutter 6.

As shown in FIGS. 3 and 4, the sorting device 2
Each sorting plate 3 is provided in a plurality of stages on the frame 8, 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.

Furthermore, a brown rice partition plate 9 for separating the brown rice layer A and the mixed rice layer C, and a paddy partition plate 10 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 the plate 9 is sent to the discharge gutter 6 via each downstream guide plate 11, 12a.
In the brown rice gutter 13, there is also a brown rice partition plate 9 and a paddy partition plate 1.
0 and the mixed rice group separated by each downstream guide plate 12b,
14a to the mixed rice gutter 15 of the discharge gutter 6, and the paddy separated by the paddy partition plate 10 is further transferred to the downstream guide plate 14.
It is configured such that the rice is dropped into the paddy gutter 16 of the discharge gutter 6 via the paddy pipe b, and taken out to the delivery chute 7.

Furthermore, the brown rice partition plate 9 is connected to a partition adjustment motor 17 attached to the frame body 8, a screw shaft 18 and an engaging member 1.
The paddy partition plate 10 is connected to the frame body 8 through elongated holes 20 and screw members 21 so as to be movably adjustable.
It is attached and connected for manual adjustment via.

Furthermore, a brown rice falling guide opening 23 formed by the guide plate 11 and the grain guide plate 22 on the lower side of the brown rice side of the brown rice partition plate 9 has a switching shutter 24 that can be freely switched to the brown rice gutter 13 and the mixed rice gutter 15. is provided via a rotating shaft 25, and this switching operation is performed by a handle 26 or a solenoid 27, and the sorting plate 3
It is configured so that grains from the shaking side are selectively discharged into each gutter 13, 15.

Further, the brown rice partition plate 9 has a partition plate position detection rack 29 and a rod 30 attached via a fixing member 28, and the rack 29 is engaged with a pinion gear 32 that is interlocked with a potentiometer 31 for indicating the partition plate position. On the other hand, stop switches 33 and 34 are arranged on the left and right sides of the rod 30 to stop the drive of the motor 17 by contacting the rod 30 when the partition plate 9 reaches the end of left and right movement. It is composed of

Further, a photoelectric boundary sensor 36 for detecting paddy in the mixed rice layer C is arranged at the upper end of the brown rice partition plate 9 via a fixed mounting plate 35.
is attached to the mounting plate 35 through a long hole 37 and a bolt 38 so as to be adjustable in horizontal movement, and irradiates the grains at the top of the sorting plate 3 flowing down the mixed rice side of the partition plate 9 with a beam of light and uses the reflected light. It is configured to receive light and detect the mixed amount of paddy based on the difference in reflection between brown rice and paddy.

Furthermore, a photoelectric paddy sensor 40 is installed on the paddy sorting side of the frame 8 via a fixed mounting plate 39, and the sensor 40 is disposed on the upper surface of the swinging side end of the sorting plate 3. It is configured to detect the rice grains or the plate surface at the shaking side end of the sorting plate 3 and determine whether the amount of grain flowing down and the inclination angle and swing angle of the sorting plate 3 are appropriate.

As shown in FIGS. 5 and 6, the shutter 2
The cylinder type solenoid 27 for 4-switching operation is attached to the frame 8 via brackets 41a and 41b, and the actuating piece 4 is fixed to the actuator rod 27a, and the swinging solenoid 27 is fixed integrally to the rotating shaft 25. The tip of the actuating piece 42 is engaged and connected to the plate 43 through the pin 44 and the loose fitting hole 45, and the rod 2 is connected to the plate 43 by switching the solenoid 27.
When the shutter 7a is expanded and contracted appropriately, the shutter 24 fixed to the rotating shaft 25 via the bolt 46 is attached to the brown rice gutter 1.
3 side or the mixed rice gutter 15 side. Further, the swing plate 43 is configured to be biased by a spring force of a fulcrum cross-over spring 47 to maintain the shutter 24 at the switching position.

Next, as shown in FIG. 7, the boundary sensor 36 is electrically connected to a control circuit 51 via a differential amplifier 50 equipped with a buffer circuit 48 and a reference light amount adjuster 49, and the control circuit 51 is driven in forward and reverse directions. The motor 17 is connected through the circuits 52 and 53, and the amount of light detected by the sensor 36 increases or decreases depending on the mixing ratio of paddy, and there is a difference in the amount of light between it and the reference amount of light set by the regulator 49. When this occurs, the control circuit 51 outputs a forward/reverse signal for the motor 17, and the partition plate 9 is brought into a state where the reference light amount of the adjuster 49 and the detected light amount of the sensor 36 match by appropriately driving the motor 17 in the forward and reverse directions. It is configured to control the movement of.

Next, as shown in FIG. 8, the paddy sensor 40 is connected to the shutter switching circuit 57 via the paddy detection circuit 54, the timer 55, and the brown rice side switching circuit 56, and the sensor 40 and the shutter switching circuit 57 are connected to each other.
are connected in parallel with these through a plate surface detection circuit 58 and a mixed rice side switching circuit 59, for example, the flow rate of grains is set to be equal to or higher than the grain flow rate setting when the paddy has started flowing to the paddy side of the sorting plate 3. When the sensor 40
The paddy detection circuit 54 is operated by the paddy detection signal, and after a predetermined time set by the timer 55, the shutter switching circuit 57 is operated via the brown rice side switching circuit 56, and the solenoid 27 is moved in the direction of extending the rod 27a. Excite the shutter 24 to the brown rice gutter 13
On the other hand, when the sensor 40 detects the surface of the sorting plate 3 due to insufficient supply of grains, the sensor 40 detects the surface of the sorting plate 3 via the detection circuit 58 and the switching circuit 59. The shutter switching circuit 57 is operated to excite the solenoid 27 in the direction of moving the rod 27 in and out, thereby switching the shutter 24 to the mixing rice gutter 15 side.

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 are flowing down along the inclination angle β. , the brown rice layer A is agitated by the rocking motion of the sorting plate 3 and the rough sorting surface of the sorting plate 3, and 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 at the upper end of the inclination angle α. The rice layer B is sorted so that the mixed rice layer C is concentrated in the intermediate area. The partition plate 9 is provided at the downstream end,
10 to separate and take out each rice, and the position control of this brown rice partition plate 9 is performed by detecting paddy in the mixed rice layer C by the boundary sensor 36.

In other words, the light reflection difference between brown rice and paddy in mixed rice increases in proportion to the amount of paddy mixed, so the amount of paddy contained in the mixed rice at the sensor 36 position is larger than usual and the paddy mixing ratio is When the amount of light exceeds a certain reference value, the amount of light detected by the sensor 36 also increases, causing a difference in amount of light with the reference amount of light of the regulator 49, and the amount of light detected by the control circuit 51 is increased by the normal rotation drive circuit 52. A signal to activate the is output. As a result, the motor 17 rotates normally, the partition plate 9 is moved toward the brown rice side, and the partition width T on the brown rice side is automatically adjusted to be small.

On the other hand, contrary to the above, when the paddy mixing ratio of this mixed rice is lower than the reference value and the amount of light detected by the sensor 36 is also smaller than the reference amount of light of the regulator 49, the control circuit 51 activates the reverse drive circuit 53. An activation signal is output, the partition plate 9 is moved toward the paddy side, and the partition width T on the brown rice side is automatically adjusted to a large value, thereby effectively increasing the amount of brown rice to be taken out.

Therefore, due to insufficient supply of grains at the start or end of the operation, or due to incorrect adjustment of the inclination angle and swing angle of the sorting plate 3, the paddy sensor 40 may
In the case of a state in which the plate surface is detected, the grain layer on the shaking side becomes thin, and the grain layer is not separated or the paddy floats due to the oscillating movement of the sorting plate 3 and its rough sorting surface. Therefore, the whole grain is concentrated on the shaking side, that is, on the brown rice side, and even if the partition plate 9 is moved to the maximum brown rice side and the brown rice side partition width T is minimized, the paddy is concentrated in the brown rice layer A. Contaminated brown rice gutter 13
This causes the inconvenience that rice mixed with paddy is discharged.

Therefore, when the paddy sensor 40 detects the surface of the sorting plate 3, the shutter switching circuit 57 is activated via the detection circuit 58 and the switching circuit 59.
The solenoid 27 is energized in the direction of retracting the rod 27a, and the shutter 2 is brought into the state shown by the imaginary line in FIG.
4 is switched to the mixed rice gutter 15 side, and the partition plate 9
The brown rice group separated by is discharged into a mixing rice gutter 15.

On the other hand, when grains are properly supplied to the sorting plate 3 tilted and oscillated at a proper angle, and the paddy sensor 40 detects paddy without detecting the plate surface, the paddy detection circuit 54 is operated by the paddy detection signal of the sensor 40, and the output of the circuit 54 is delayed by a certain time by the timer 55 and input to the brown rice side switching circuit 56 to operate the shutter switching circuit 57, and the solenoid 27 is excited in the direction to extend the rod 27 after a certain time from the paddy detection operation of the sensor 40, and the shutter 24 is switched to the brown rice chute 13 side as shown by the solid line in Fig. 5, and only completely brown rice without any mixed paddy is discharged down into the brown rice chute 13. The plate surface of the sorting plate 3 at the paddy sensor 40 detection position may be made of any material as long as there is a significant difference in reflection from the paddy, and for example, the plate surface may be coated or painted. In addition, the rice sensor 40 may also be used as a sensor for changing the inclination angle of the sorting plate 3.

"Effects of the Invention" As is clear from the following examples, the present invention includes a paddy sensor 40 that detects the grains on the swinging sorting plate 3, and a brown rice gutter 13 or mixing the grains taken out from the swinging side of the sorting plate 3. Switching shutter 2 for selectively discharging rice into the rice gutter 15
4, in which the sensor 40 is disposed on the upper surface of the swinging side end of the sorting plate 3, and the shutter is activated based on the output of the sensor 40 by detecting paddy on the swinging side of the sorting plate 3. 24 to the brown rice discharge side, and the shutter 24 to the mixed rice circulation side based on the output of the sensor 40 by detecting the plate surface of the swinging side of the sorting plate 3. By detecting the paddy or plate surface on the upper surface on the shaking side with the sensor 40, the amount of grains to be sorted on the sorting plate 3 can be confirmed and sorting conditions such as the inclination angle and the swinging angle of the sorting plate 3 can be confirmed. It is also possible to confirm whether or not the amount of grain supplied to the sorting plate 3 is appropriate, and compared to the conventional technology that detects the amount of grain supplied to the sorting plate 3, it is possible to properly initialize the sorting conditions such as adjusting the angle of the sorting plate 3, making it safer. In addition, compared to the conventional technology that detects the spread of grains on the sorting plate 3, it is possible to automatically set the time to take out the finished brown rice at the start of sorting work, and it is possible to comprehensively adjust the sorting conditions of the sorting plate 3. The finished brown rice can be discharged from the brown rice gutter 13 to the outside of the machine only when all the sorting conditions are checked by the sensor 40, and moreover, there is a large difference compared to the conventional method of distinguishing between brown rice and paddy. Since the generated paddy and the three sides of the sorting plate are detected, it is possible to improve the detection accuracy of the sensor 40 and simplify the structure of the detection control circuit. Compared to the conventional technology in which paddy is detected and the shutter 24 is switched by detecting the paddy being moved, the sensor 40 can detect when the paddy on the shaking down side of the sorting plate 3 moves beyond the set value. It is possible to detect the sorting situation in which the paddy moves abnormally to the shaking side and falls from the brown rice gutter 13 before the paddy falls from the brown rice gutter 13, and the shutter 2 can be detected before the paddy falls from the brown rice gutter 13.
4 to the mixed rice circulation side, it is possible to prevent paddy from entering the brown rice gutter 13 through early detection, and it is possible to easily improve the sorting function and workability compared to the conventional method. It is effective.

[Brief explanation of the drawing]

Figure 1 is an overall side view of the oscillating sorter, Figure 2 is a plan view of the same, Figure 3 is a cross-sectional explanatory view of the front of the main part, Figure 4 is a cross-sectional view of the side of the main part, and Figure 5 is the main part. 6 is an explanatory view of the side part, FIG. 7 is a control circuit diagram of the partition plate, and FIG. 8 is a control circuit diagram of the shutter. 3...Swinging sorting plate, 13...Brown rice gutter, 15...
Mixed rice gutter, 24...Shutter, 40...Paddy sensor.

Claims (1)

[Scope of utility model registration request] Paddy sensor 40 that detects grains on the oscillating sorting plate 3
and a switching shutter 24 for selectively discharging the grains taken out from the swinging upper side of the sorting plate 3 into the brown rice gutter 13 or the mixed rice gutter 15. A sensor 40 is provided, and the shutter 24 is set to the brown rice discharge side based on the output of the sensor 40 by detecting paddy on the swinging side of the sorting plate 3, and the output of the sensor 40 is set by detecting the surface of the sorting plate 3 on the swinging side. The shutter 2 based on
4 to the mixed rice circulation side.