JPH0110595Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an automatic grain grading device used for self-inspection in grain communal drying and adjustment facilities such as so-called rice centers.

At the joint drying adjustment facility, the amount of paddy brought in, the moisture content of each paddy, the percentage of hulling, the percentage of waste rice, the quality of brown rice, etc. are checked for the unpaddy rice brought in by member farmers, in order to determine the quality of the paddy rice brought in. It is being inspected voluntarily.
The present invention relates to a self-inspection brown rice quality determination device that measures the volume and weight of sample brown rice and detects split rice, accidental rice, etc. by projecting light onto the sample brown rice and capturing its profile. The purpose of the present invention is to provide an automatic grade determination device having a configuration that determines the grade of grain according to the ratio thereof, and which improves workability and makes grade determination fair. The present invention will be described in detail below based on drawings showing embodiments thereof.

The drawing is a schematic diagram of an automatic grain grading device (hereinafter referred to as the device) according to the present invention. The proposed device automatically determines the quality by measuring the fixed volume weight and fixed grain number weight of the supplied sample brown rice, and captures its profile, and furthermore, automatically bags the sample brown rice. be. In the figure, 1 is a receiving box for weighing sample brown rice to a predetermined volume, and is supported by a rotatable support rod 4. Further, the support rod 4 is connected to a measuring device 2, and the measuring device 2 measures the weight of the sample brown rice in the receiving box 1. An air cylinder 3 controlled by an arithmetic control section 16, which will be described later, is provided near the top of the receiving box 1, and a shutter 14 whose lower surface is in sliding contact with the upper end surface of the receiving box 1 is provided at the tip of the rod. The upper end opening of the receiving box 1 can be covered by the advancement of the rod. The end of the shutter 14 on the rod advancement side is bent upward, and when sample brown rice is put into the receiving box 1, the bent portion 14a is placed in a heap above the top surface of the receiving box 1.
By advancing the rod of the air cylinder 3, brown rice in an amount exceeding the capacity of 1 is ground at the bent part 14a, dropped onto the inclined downflow gutter 12, further flowed down along the flowdown gutter 12, and discharged to the outside. When the scale 2 is operated in this state, the scale 2 obtains the weight of brown rice relative to the capacity of the receiving box 1, and inputs this to the arithmetic control section 16, which will be described later.

A downflow gutter 5 is provided at an angle below the receiving box 1, and the brown rice in the receiving box 1 is dropped onto the downflow gutter 5 by rotation of the support rod 4. At the downstream discharge side end of the downflow gutter 5, a measuring device 7 is provided with a receiving plate 6 tilted in the same direction as the downflow gutter 5. The receiving plate 6 is made of a translucent material such as an acrylic plate, and has a rice-shaped shape on its top surface.
1000 recesses 6a, 6a... are formed. The recesses 6a, 6a, . . . have shapes and sizes corresponding to the shape and size of brown rice, so that one grain of brown rice can be accommodated in one recess 6a. Further, the receiving plate 6 is provided with an inclination adjustment device and a swinging device (not shown) so that the 1000 pieces of unpolished rice are reliably accommodated in the 1000 recesses 6a, 6a, . . . in the measurement posture. The weighing device 7 measures the weight of 1000 pieces of brown rice in the recesses 6a, 6a, .

An optical sensor 8 is provided below the receiving plate 6 and has a projection and a light receiving surface parallel to the receiving plate 6.
All the recesses 6a, 6a, . . . are within the light projection area of the optical sensor 8. On the other hand, a reflecting plate 9 parallel to the receiving plate 6 is provided above the receiving plate 6 at a position facing the optical sensor 8, and reflects the light projected from the optical sensor 8 and passing through the receiving plate 6. The light is reflected, and the optical sensor 8 captures the light reflected by the reflecting plate 9. Moreover, the optical sensor 8 is projected from the sensor 8 to the receiving plate 6.
It also captures the light directly reflected by the brown rice in the recesses 6a, 6a, . . . . The detection result of the optical sensor 8 is input to the calculation control section 16. Since the light from the reflector 9 has high brightness and the light reflected from the brown rice has low brightness, the optical sensor 8 captures the profile of 1000 grains of brown rice. The arithmetic control unit 16 compares the data obtained by image processing of this profile with pre-given data indicating the profile of normal brown rice, and determines whether each grain is missing in the profile compared to the profile of normal brown rice. It is determined whether a certain accidental rice is rice with a broken body or broken rice. Then, the number of accidental rice is detected, and the total number of grains (1000
Calculate the accident rate of rice as a ratio to the number of grains).

On the other hand, the amount of reflected light from the brown rice in the recesses 6a, 6a, or the level of brightness includes information as to whether the brown rice is grain-skinned rice (low brightness). The arithmetic control unit 16 determines whether or not each grain is rice with uneven texture based on this brightness, and calculates the ratio of rice with uneven texture as a ratio to the total number of grains (1000 grains).

The accident rice rate and the rice deviation rate are printed on the inspection slip by the printer 17.

The measuring instrument 7, the receiving plate 6, and the optical sensor 8 are integrally reversible, and after a predetermined detection operation by the optical sensor 8, the measuring instrument 7, the receiving plate 6, and the optical sensor 8 are reversed and the receiving plate is turned over. The brown rice stored in the recesses 6a, 6a, . . . 6 is allowed to fall into a discharge hopper 11.

Furthermore, an air cylinder 15 whose rod is parallel to the receiving plate 6 is fixed to the top surface of the measuring instrument 7.
A brush 13 that slides on the upper surface of the receiving plate 6 is provided at the tip of the rod. The air cylinder 15 is controlled by the arithmetic control unit 16 and is driven every time one inspection is completed to move the rod back and forth several times, and the brush 13
With this reciprocating movement, the upper surface of the receiving plate 6 is brushed to remove brown rice stuck in the recesses 6a, 6a, . . . .

The brown rice dropped into the discharge port of the discharge chute 11 is automatically stuffed into a bag made of vinyl chloride or polyethylene, and as described above, the printer 17
An automatic bagging device 10 is provided which simultaneously attaches to the bag an inspection slip on which the calculation results of the arithmetic and control unit 16, the quality, a code for identifying the farmer, a consignment code, etc. are printed.

Now, the control by the arithmetic control section 16 is roughly as follows. Put an arbitrary amount (slightly more than the capacity of receiving box 1) of sample brown rice into receiving box 1 and transfer it to receiving box 1.
When the tank is full and the switch is turned on, the arithmetic control unit 16 moves the rod of the air cylinder 3 forward so that the amount of brown rice reaches the capacity of one receiving box, so that the amount of brown rice exceeds the capacity of the receiving box 1 and rises above the top surface of the receiving box 1. Discharge plate 1 of brown rice
4a to make it fall onto the downflow gutter 12.
As a result, the brown rice in the receiving box 1 reaches the capacity of the receiving box 1, and the arithmetic control section 16 causes the weighing device 2 to measure the weight of this brown rice, and the printer 17 prints the measurement result on an inspection slip.

When the measurement by the measuring device 2 is finished, the calculation control section 16
The support rod 4 is rotated 180 degrees to cause the brown rice in the receiving box 1 to fall onto the downflow gutter 5. The brown rice flows along the downflow gutter 5 and flows down on the upper surface of the receiving plate 6. Each brown rice has 6 receiving plates
When passing through the upper surface, it is accommodated in each recess 6a, 6a, . . . formed on the upper surface of the receiving plate 6. In this case, the angle of inclination of the receiving plate 6 is adjusted by the inclination adjusting device and the swinging device, and the receiving plate 6 is given a swing so that the brown rice is reliably stored in each of the recesses 6a, 6a... There is. The brown rice that cannot be completely accommodated in each of the recesses 6a, 6a, . . . is dropped onto the discharge chute 11. The arithmetic control unit 16 causes the weighing device 7 to measure the weight of the brown rice stored in the recesses 6a, 6a, . . . of the receiving plate 6, and causes the printer 17 to print the weighing results on an inspection slip.

When the calculation control unit 16 operates the optical sensor 8 in such a state, the optical sensor 8 projects light onto the entire surface of the receiving plate 6, and the light is projected from the optical sensor 8 onto the reflecting plate 9 above the receiving plate 6. The optical sensor 8 captures the reflected light and the reflected light from the brown rice in the recesses 6a, 6a, . . . and inputs the captured light to the arithmetic control section 16.

The arithmetic control unit 16 controls the reflection plate 9 captured by the optical sensor 8.
The light transmittance per 1000 grains of brown rice is calculated from the reflected light from the light sensor 8, and the rate of accidental rice such as split rice and cracked rice is obtained by matching with the data input in advance.
The reflectance of the brown rice is calculated from the reflected light from the brown rice that is captured by the camera, and the ratio of rice with skin deviation is obtained by matching with the data input in advance.These accident rice rate and ratio of rice with skin deviation are printed on the inspection slip using the printer 17. Print.

Now, after completing the necessary inspection using the measuring instrument 7, optical sensor 8, etc., the arithmetic control section 16 inverts the receiving plate 6 integrated with the measuring instrument 7, optical sensor 8, etc. is dropped into the discharge chute 11.

At this time, the calculation control unit 16 controls the air cylinder 15
is driven and its surface is brushed with a brush 13 to reliably remove brown rice in the recesses 6a, 6a, . . .

The discharge chute 11 is provided with an automatic bagging device 10, and the calculation control unit 16 is connected to an air cylinder 15.
After driving the automatic bagging device 10,
The brown rice discharged from the discharge chute 11 is automatically packed into bags, and an inspection slip with quality, weight, etc. printed by a printer 17 is attached to the bags, and a series of controls is completed.

As described in detail above, the automatic grain grading device according to the present invention includes a constant volume weight measuring means and a fixed grain number weight measuring means for the supplied grain, and an optical sensor that captures the profile of the fixed grain number of grains. and an arithmetic unit that determines the quality of the grain by making the detection results of the optical sensor correspond to preset data, so that the quality determination in the self-inspection can be done fairly and strictly, and the process can be The present invention has excellent effects, such as making it possible to automate self-inspection.

Note that the present invention is applicable not only to brown rice but also to all grains such as wheat.

[Brief explanation of the drawing]

The drawing is a schematic diagram of the proposed device. 1... Receiving box, 2, 7... Measuring instrument, 3... Air cylinder, 5, 12... Downflow gutter, 6... Receiving plate, 6a
... recess, 8 ... light sensor, 9 ... reflector, 10
... Automatic bagging device, 11 ... Discharge chute, 13
... Brush, 16 ... Arithmetic control section, 17 ... Printer.

Claims (1)

[Scope of utility model registration request] A constant volume weight measuring means and a fixed grain number weight measuring means for the supplied grain, an optical sensor that captures the profile of the fixed grain number of grains, and a detection result of the optical sensor that corresponds to preset data. What is claimed is: 1. An automatic grain determining device comprising: a calculation section for determining grain quality;