JPH0312369Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a grain quality determination machine, and in particular, grain quality determination that efficiently sorts sample grains (rice grains) whose quality ranks have been determined by quality rank. Related to machine sorting equipment.

[Prior Art] Conventionally, as a grain quality determination machine, for example,
There is one shown in Figure 9. In the figure, 1 is a determination mechanism section of a grain quality determination machine, 2 is a rotating disk, and 3 is a detection section. The detection unit 3 includes a transmissive/reflective head 4 that detects the amount of transmitted light of two wavelengths, for example, and a splitting head 5 that detects the amount of transmitted light in the longitudinal direction of the grain. The rotating disk 2 is for transporting the grains one by one to the detection section 3, and has a plurality of sampling holes 7 at equal intervals in the circumferential direction on its outer periphery 6, and has a plurality of sample sampling holes 7 at equal intervals in the circumferential direction on its outer periphery 6. Rotatably supported. Further, this rotary disk 2 is inclined at an angle θ as shown in FIG. Furthermore, an annular sample receiving plate 11 is provided on the lower surface of the rotating disk 2 to prevent the sample grains 8 that are inserted into the sample sampling holes 7 and transferred from falling downward. A wall 12 is disposed along the outer peripheral edge 6 in the direction of inclination of the rotating disk 2, and sample grains 8 are stored between the wall 12 and the lower slope 2-1 of the rotating disk 2. A supply section 14 is formed. The sample grains 8 stored in the sample supply section 14 fit into the sample collection hole 7 one by one as the rotating disk 2 rotates, are prevented from falling by the sample receiving plate 14, and are transferred in the direction of arrow a. be done. The detection unit 3 irradiates each of the transferred sample grains with a light beam and detects the amount of transmitted and reflected light. The detected value is then input to a separately provided determination control unit, and becomes data for determining quality ranks such as sorted grains, immature grains, damaged grains, and colored grains, for example. The detected sample grains 8 are transferred to the sample receiving plate 1 through a discharge port (not shown) opened in a part of the sample receiving plate 11 during the transfer process up to the sample supplying section 14.
1 was discharged into a discharge path 13 provided in the direction of the lower surface.

[Problems to be solved by the invention] By the way, in order to confirm the performance of the grain quality determination machine, it is necessary for the user to provide a sorting mechanism that sorts and stores each sample grain according to quality rank in accordance with the determination results. It was requested by. For this purpose, it was considered to separately install a sorting mechanism that sorts the sample grains 8, which have been discharged into the discharge path 13 provided on the lower surface of the sample receiving plate 11, according to their discharge rank midway through the discharge path. .

However, in this case, it is necessary to additionally install the sorting mechanism in the space below the rotating disk of the determination mechanism, which tends to increase the overall height and size of the determination mechanism. Furthermore, when setting multiple quality ranks to be judged, the discharge route is branched at multiple locations.
It is necessary to provide a shutter for switching each branched path, and to control the drive of this shutter in synchronization with the timing at which the judgment control section determines the quality rank. As a result, the structure and drive control of the sorting mechanism become complicated. There were other problems.

Moreover, such a complicated configuration has the disadvantage that the determination process also takes time.

[Purpose of the invention] Therefore, the purpose of the invention is to provide a sorting mechanism on the outer periphery of the rotating disk that sorts the sample grains, whose quality ranks have been determined, by quality rank while being placed in the sampling holes of the rotating disk. By doing so, the structure and drive control of the sorting mechanism can be simplified without increasing the installation space of the sorting mechanism, and synchronization with the judgment control section can be facilitated, and the grain quality can be further improved by allowing the sorting process to be performed at high speed. The object of the present invention is to realize a sorting device for a judgment machine.

[Means for Solving the Problems] In order to achieve this object, this invention includes a rotating disk having a plurality of sample sampling holes at equal intervals in the circumferential direction on the outer periphery, and a rotary disk that is transported by the sample sampling holes. a detection unit that irradiates each sample grain with a light beam and detects the amount of transmitted and reflected light, and a detection signal inputted from the detection unit is compared with a predetermined value to determine the quality rank of the sample grain. and a quality rank signal from the determination control unit at a predetermined position on the outer periphery in front of the detection unit in the rotational direction of the rotating disk, and discharge the sample grain above the sample collection hole. an air sorting mechanism including an air source, a solenoid valve, and a sorting guide body having a sorting guide passage corresponding to the number of quality ranks; and a timing signal for air discharge to the air sorting mechanism. The present invention is characterized in that it is provided with a timing detection unit that detects the rotational position of the rotating disk for feeding, and a sorted sample box that accommodates sample grains sorted by the air sorting mechanism according to quality rank.

[Operation] According to the configuration of this invention, the sample grain is placed in the sample sampling hole at a predetermined position on the outer circumferential edge of the rotating disk forward in the rotational direction from the detection unit based on the quality rank signal from the determination control unit. By providing an air sorting mechanism that discharges air upward to sort by quality rank, and a sorting sample box that stores sample grains sorted by the air sorting mechanism by quality rank, the quality rank is determined by the detection unit. The sample grains can be sorted and discharged according to quality rank while remaining in the sampling hole of the rotating disk, without increasing the installation space of the sorting mechanism, and at the same time as when the judgment control unit decides the quality rank. Since sorting can be performed in synchronization, the drive control of the sorting mechanism can be easily controlled.

Furthermore, in order to send a timing signal for air discharge to the air sorting mechanism, a timing detection section is provided for detecting the rotational position of the rotating disk.
The sorting process can be performed by continuously rotating the rotating disk, achieving high-speed processing.

[Example] Next, an example of this invention will be described in detail based on the drawings. 1 to 7 show examples of this invention. FIG. 1 shows an optical quality determination machine for grains, for example, rice grains, which consists of a control section 15 and a determination mechanism section 1 which are formed separately. The control section 15 and the determination mechanism section 1 are connected through a signal line 17 and a power line 18. Further, the control section 1
The operation surface 19 of 5 includes a liquid crystal display (LCD) 20 that digitally displays quality determination results, a grain number display 21 that displays the number of grains in the sample, and a power switch 22.
and a measurement mode selection switch 23, and a rating display section 24 that rates and displays the quality rank of the sample.
A key input section 25 is provided for inputting various measurement commands through key operations. Further, on the upper surface 15-1 of the control section 15, a printer 2 for outputting the determination results is provided.
6 will be provided. Further, the determination mechanism section 1 includes a sample input port 16 into which the sample grain 8 is input, and a sorted sample box 27 which accommodates the sorted samples according to their quality ranks.
Remaining sample receiving box 2 for receiving separately discharged unmeasured samples
8.

Furthermore, what is shown in FIG. 2 is a block diagram of a determination control section 29 built in the control section 15. The judgment control unit 29 includes a microcomputer (CPU).
30, and interface (I/F board) 3
1, the printer 26, the keyboard 25,
Connect each LCD20.

Furthermore, this I/F board 31 has an input/output section 32.
A sorting drive unit 33, a conveyance drive unit 34, a timing detection unit 35, and a peak hold circuit 36 are connected to the peak hold circuit 36 through a spectrometer 37 and an A/D connected to the I/F board 31.
A converter 38 is connected thereto.

The determination mechanism section 1 includes a light source 39, a solenoid valve 40 connected to the sorting drive section 33, a motor 9 connected to the transport drive section 34, and a timing sensor 4 connected to the timing detection section 35.
1. a transflective head 4 connected to the light source 39 and to the peak hold circuit 36;
Similarly, it has a body splitting head 5 connected to a peak hold circuit 36.

Moreover, what is shown in FIGS. 3, 4, and 5 is a sorting mechanism built into the determination mechanism section 1, and parts that perform the same functions as the conventional example shown in FIGS. 8 and 9 are given the same reference numerals. The explanation will be omitted.

First, reference numeral 42 denotes timing holes for detecting the rotational position of the rotating disk 2 with the timing sensor 41, and as shown in FIG. Equally spaced in the circumferential direction (=equal angle) so as to correspond to each of the sample sampling holes 7
The number of sample sampling holes 7 is the same as that of the sample sampling holes 7. Reference numeral 43 denotes a fixing plate that supports the sample receiving plate 11 and also fixes the positions of the transmissive/reflective head 4, the splitting head 5, the timing sensor 41, etc. with high precision. 44 is A of the sample sampling hole 7 located on the outer periphery of the rotating disk 2;
Sample receiving ports 45-1 and 45- which are sorting guide bodies installed close to the upper surface of positions B, C, D, and E, and open corresponding to positions A, B, C, D, and E, are provided.
2, 45-3, 45-4, 45-5 and sorting guide passages 46-1, 4 independently correspondingly connected thereto.
6-2, 46-3, 46-4, 46-5 and outlet 47-1, 47-2, 47-3, 47-4, 47
-5. Reference numeral 48 indicates a discharge passage formed in the fixed plate 43 at a position corresponding to each discharge port 47, respectively.

Reference numeral 49 denotes a concave cutout in the lower surface of each sample socket 45 along the transfer trajectory of the sample grain 8, and is used to prevent the sample grain 8 and the lower surface of each sample socket 45 from coming into contact with each other. It is. 50 is the above A, B,
Air discharge ports are independently opened in the fixing plate 43 and the sample receiving plate 11 corresponding to positions C, D, and E, and each air discharge port 50-1, 50-2, 50-
3, 50-4, 50-5 are corresponding solenoid valves (SOL) 40-1, 40-2, 40-3,
It is piped to an air source 51 via 40-4 and 40-5 (not shown). Therefore, by controlling ON/OFF of each solenoid valve 40, the air discharge ports 50-1, 50-2, 50-
3, 50-4, and 50-5 can be independently discharged with a predetermined pressure and amount of air. Due to the discharge of this air, the sample grains 8 fitted into the sample sampling hole 7 of the rotating disk 2 are blown away into the sample receptacle 45 and discharged, and further into the sorting guide passage 46 and the discharge port 4.
7, the sample is sorted and stored in each sorted sample box 27 via the discharge path 48 and the discharge pipe 52.

In this way, the sorting guide body 44 forms an air sorting mechanism that sorts sample grains according to quality rank.

Next, the operation will be explained with reference to the flowchart for quality determination shown in FIG. 6 and the timing chart of the air sorting mechanism shown in FIG. First, the sample grain 8 is supplied from the sample input port 16 of the determination mechanism section 1 of the grain quality determination machine, and the number of grains to be measured is determined using the keyboard 25.
After inputting the measurement mode, input the measurement start command. The determination control circuit 29 receives the measurement start command and starts a measurement program built into the memory of the CPU 30 (100).

Next, the CPU 30 determines, based on the input measurement mode, whether the "selection mode" is YES, in which the samples to be measured are sorted by quality rank, or the "measurement mode" is NO, in which the samples are not sorted by determining the quality rank only (101).
In the case of "measurement mode" at 101, the rotation speed of the motor 9 is set to high speed (102), and subsequent determinations are processed at high speed. In the case of "sorting mode" in (101) above,
Alternatively, after processing the above (102), the CPU 30 sequentially inputs measurement data of each sample grain passing through the detection unit 3 from the A/D conversion unit 38 (103).

Next, compare the measurement data input in (103) with the judgment level set in memory in advance,
The quality rank of each sample grain is sequentially determined (104).

For example, if the sample grain is brown rice and the quality is to be determined into 5 categories, the grain size: quality rank 1, immature grain: quality rank 2, damaged grain…quality rank 3, colored grain…quality rank 4, and split grain. ...The quality is ranked as 5.

Next, in the same way as in (101), it is determined whether or not the sorting mode is selected (105). If YES, the sample grains transferred to the sorting guide body 44 by the rotating disk 2 are ) Sort according to the quality rank determined. In other words, as shown in Figure 6, CPU3
0, the position of the sample grain 8 on the rotating disk 2 after determining the predetermined quality rank is determined by the timing detection unit 3.
Timing pulses (Tn) input sequentially from 5
A program counter is provided to count the updates according to the quality rank 1, 2, 3, 4,
When the sample grains are transferred to positions A, B, C, D, and E (sorting positions) of the rotating disk 2 corresponding to 5, the solenoid valve 40 corresponding to each sorting position
-1, 40-2, 40-3, 40-4, 40-5
is turned on for a predetermined period of time. When the solenoid valve 40 is turned on, air at a predetermined pressure and amount is discharged from the air discharge port 50, and at this time, air is discharged into the sample receptacle 45 of each sorting guide body 44 corresponding to the sample sampling hole 7 of the rotating disk 2. It is released toward the destination.
The discharged sample grains 8 are sorted and stored in the sorted sample boxes 27 provided for each quality rank via the respective sorting guide passages 46, discharge ports 47, discharge paths 48, and discharge pipes 52.

Next, in the same way as in the case of NO in the above (105), it is determined (107) whether the predetermined number of measurement particles has been measured,
If NO, the process returns to step (103), and if YES, the measurement result is output by the printer 26 (108), and the measurement operation ends (109).

As a result, in the case of the sorting mode, after the measurement operation is completed, the sample grains 8 can be sorted by quality rank and stored in each sorted sample box 27. Furthermore, an air sorting mechanism unit for discharging air upward from the sample sampling hole 7 as a sorting mechanism, and a sorting sample box 27 for storing sample grains 8 classified by quality rank discharged by the air sorting mechanism according to rank are provided. As a result, the sample grains 8 whose quality has been determined by the detection unit 3 can be sorted and discharged according to quality rank while being placed in the sample collection hole 7 of the rotating disk 2, and the installation space for the sorting mechanism can be increased. Moreover, the selection can be easily synchronized with the timing at which the determination control unit 29 determines the quality rank.

Note that this invention is not limited to the above-mentioned embodiments,
Various applications and modifications are possible.

For example, instead of relying on the discharge pressure of air from the air discharge port 50 to collect the sample grains 8, an air negative pressure suction mechanism may be provided on the discharge pipe 52 side to suck the sample grains into the sorting guide body 44. A sorting mechanism may also be formed.

[Effects of the invention] As is clear from the above detailed description, this invention provides the following effects.

A transmissive/reflective head and a splitting head for quality determination are installed around the rotating rotating disk, as well as a sorting mechanism according to the quality rank, so there is no need to increase the installation space for the sorting device.
The overall structure has become more compact.

For example, since the timing detection section is configured with a timing sensor and timing holes provided at equal angles in a number corresponding to the sampling holes provided in the rotating disk, there is no contact part, and therefore the rotating disk can be moved quickly. Even when turned, judgment processing can be performed based on accurate timing detection, resulting in faster processing speed.

In addition, as the ranks of defective grains, we have established quality ranks for at least immature grains, damaged grains, colored grains, and split grains, so the quality of each grain can be determined based on the quality judgment based on one sample grain supply. Not only that, but also the overall quality can be rated. (The quality of Japanese rice grains consists of defective grains, immature grains, damaged grains,
Since the quality of the entire rice is graded based on the proportion of colored grains and split grains, the quality can be quickly determined. )

[Brief explanation of drawings]

1 to 7 show an embodiment of the present invention, FIG. 1 is a perspective view of the control unit and determination mechanism of the grain quality determination machine, and FIG. 2 is a block diagram of the determination control unit built into the control unit. , FIG. 3 is a view corresponding to the arrow B in FIG. 9 of the sorting mechanism built into the determination mechanism section, FIG. 4 is an explanatory diagram showing the positional relationship between the sorting guide body and the rotating disk, and FIG. A-A sectional view, FIG. 6 is a flowchart for measurement and sorting, FIG. 7 is a diagram showing the operation timing chart of the air sorting mechanism, and FIGS. 8 and 9 are conventional examples of grain quality determination machines. 8 is a view taken along arrow B in FIG. 9 showing the inside of the determination mechanism, and FIG. 9 is a side view thereof. In the figure, 2 is a rotating disk, 3 is a detection unit, 6 is an outer periphery, 7 is a sample collection hole, 8 is a sample grain, 15 is a control unit, 27 is a sorting sample box, 29 is a judgment control unit,
35 is a timing detection section, 40 is a solenoid valve, 41 is a timing sensor, 42 is a timing hole, 44 is a sorting guide body, and 51 is an air source.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A sorting device for a grain quality determination machine that satisfies the following requirements A to F. A: A rotating disk having a plurality of sampling holes arranged at equal intervals in the circumferential direction of the outer periphery; B: A rotating disk having a plurality of sampling holes arranged at equal intervals in the circumferential direction of the outer periphery. a detection unit that detects; C a determination control unit that compares the detection signal input from the detection unit with a predetermined value to determine the quality rank of the sample grain; D an external portion in front of the detection unit in the rotation direction of the rotating disk An air source, a solenoid valve, and the quality rank number for discharging the sample grains above the sample sampling hole and sorting them according to quality rank based on the quality rank signal from the determination control section at a predetermined position on the periphery. an air sorting mechanism including a sorting guide body having a sorting guide passage corresponding to the air sorting mechanism; A sorting sample box that stores sample grains sorted by the sorting mechanism according to quality rank. (2) Claim No. 1 for Utility Model Registration, characterized in that the quality rank has at least the classification of immature grains, damaged grains, colored grains, and split grains.
A sorting device for the grain quality determination machine described in Section 1.