JP2538284B2 - Optical sorting device - Google Patents
Optical sorting deviceInfo
- Publication number
- JP2538284B2 JP2538284B2 JP62271045A JP27104587A JP2538284B2 JP 2538284 B2 JP2538284 B2 JP 2538284B2 JP 62271045 A JP62271045 A JP 62271045A JP 27104587 A JP27104587 A JP 27104587A JP 2538284 B2 JP2538284 B2 JP 2538284B2
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- box
- light
- light source
- sorting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Description
【発明の詳細な説明】 ＜産業上の利用分野＞ この発明は穀物などの粒状物を光学的に選別するため
の装置の改良に関する。Description: TECHNICAL FIELD The present invention relates to an improvement in an apparatus for optically selecting grains such as grains.
＜従来の技術＞ 被選別粒状物を傾斜シュートによって流下させ、粒状
物がシュート下端から飛び出した所で、光線を照射し、
その反射光や透過光の光量によって粒状物を判定し、異
常粒は噴風によって除去するようにした光学的選別装置
は既に提案されている。<Prior Art> A granular material to be sorted is made to flow down by an inclined chute, and when the granular material jumps out from the lower end of the chute, a light beam is irradiated,
An optical selection device has already been proposed in which a granular material is determined based on the amount of reflected light or transmitted light and abnormal particles are removed by a blast.
前記、従来の光学的選別装置では、光線を照射するた
めの光源に通常の白熱電球やナトリウムランプなどを用
いている。ところが、このような球状の光源では、シュ
ート幅を広くし、選別区域の幅を横に広げて選別能率を
高めようとした場合に、複数の光源を横に並べて使用し
なければならず、この結果、選別区域に明暗の照度ムラ
が発生し、選別精度を低下させる原因となる。この為に
は蛍光灯のような長尺の光源を用いればよいのである
が、通常の蛍光灯の場合、温度によって光量が変動する
という欠点がある。In the above-mentioned conventional optical sorting apparatus, a normal incandescent lamp, a sodium lamp, or the like is used as a light source for irradiating light rays. However, in such a spherical light source, when the chute width is widened and the width of the sorting area is widened to increase the sorting efficiency, a plurality of light sources must be used side by side. As a result, light and dark illuminance unevenness occurs in the sorting area, which causes a reduction in sorting accuracy. For this purpose, a long light source such as a fluorescent lamp may be used, but in the case of an ordinary fluorescent lamp, there is a drawback that the light amount varies depending on the temperature.
このような蛍光灯使用の問題を解決する方策として
は、従来、実開昭57−145577号が提案されている。これ
は、蛍光灯設置箇所の温度を、20〜30℃の範囲に保ち、
常に蛍光灯の最高光量の下で選別作業を行うようにする
ものである。As a measure for solving the problem of using such a fluorescent lamp, Japanese Utility Model Laid-Open No. 57-145577 has been conventionally proposed. This keeps the temperature of the place where the fluorescent lamp is installed in the range of 20-30 ° C,
The sorting work is always performed under the maximum light intensity of the fluorescent lamp.
＜発明が解決しょうとする課題＞ ところが、前記の実開昭57−145577号の方式では、蛍
光灯を最高光量の状態に保つように温度調節するので、
調節完了後の選別作業には問題はないが、反面、この為
には20〜30℃という狭い範囲内に温度調節しなければな
らないので、実際の使用時には、不良選別作業の発生と
いう大きな問題が出る。その原因は、選別作業時におけ
る米温の大きなバラツキである。例えば、夏の高温時
は、冬の厳寒時における米温の差、低温倉庫に保管され
ていたか、否かの差、更には選別作業の直前工程に精米
作業をするか否かによる高温化の差などの為に、選別装
置に送られて来る米には、10〜50℃にも及ぶ温度差があ
って、決して一定ではない。そして、この米の温度差は
選別装置の内部温度に大きな影響を与え、蛍光灯の設置
箇所の温度の変動幅も高温から低温まで非常に大きくな
る。ところが前記の従来方式では、これを常に20〜30℃
の範囲に温度調節しようとするのであるから、無理があ
り、調節に時間がかかったり、また、調温不達成になっ
たりして、不良選別が発生するのである。<Problems to be Solved by the Invention> However, in the method of Japanese Utility Model Application Laid-Open No. 57-145577, the temperature is adjusted so that the fluorescent lamp is kept at the maximum light intensity.
Although there is no problem in the sorting work after the adjustment is completed, on the other hand, since the temperature must be adjusted within a narrow range of 20 to 30 ° C for this purpose, a large problem of defective sorting work occurs during actual use. Get out. The cause is a large variation in rice temperature during the sorting work. For example, when the temperature is high in the summer, the difference in rice temperature during the severe cold in winter, the difference in whether or not it was stored in a low temperature warehouse, and the temperature increase depending on whether or not the rice polishing work is performed immediately before the sorting work. Due to the difference, the rice sent to the sorting device has a temperature difference of 10 to 50 ° C, which is not constant. The difference in the temperature of the rice has a great influence on the internal temperature of the sorting apparatus, and the fluctuation range of the temperature of the location where the fluorescent lamp is installed becomes extremely large from high temperature to low temperature. However, in the above-mentioned conventional method, this is always 20 to 30 ° C.
Since the temperature is controlled within the above range, it is unreasonable, it takes a long time to control the temperature, and the temperature control is not achieved, resulting in defective selection.
本発明はこのような点に鑑み、蛍光灯を最大光量の状
態に調節設定するのではなく、温度の安定化だけを図る
ことによって、蛍光灯の光量の変動を押え、もって不良
選別の発生をなくした光学的選別装置を提供せんとする
ものである。In view of such a point, the present invention does not adjust and set the fluorescent lamp to the state of the maximum light amount, but only stabilizes the temperature to suppress the fluctuation of the light amount of the fluorescent lamp, thereby causing the occurrence of defective selection. The purpose is to provide a lost optical sorting device.
＜課題を解決するための手段＞ 本発明の光学的選別装置の技術的手段は、被選別物を
判別位置に送り込む供給装置と、判別位置に達した被選
別物に光線を照射する光源と、被選別物からの光量を検
査して判別する装置と、異常粒と判別された被選別物を
選別する装置とからなる光学的選別装置に於いて、光源
に蛍光灯を用い、かつ、光源を略気密のボックス内に収
容すると共に、ボックス内には自動制御可能な温度調節
装置を設けて、調節設定時におけるボックス内の温度
が、20〜40℃の場合には、温度をその範囲内に保持し、
また、ボックス内の温度が20℃より低い場合には、温度
の変動範囲を±３℃以内に、また、ボックス内の温度が
40℃より高い場合には、温度の変動範囲を±５℃以内に
それぞれ保持するようにしたことにある。<Means for Solving the Problem> The technical means of the optical sorting apparatus of the present invention includes a supply device for feeding the objects to be sorted to the discrimination position, a light source for irradiating the objects to be sorted which have reached the discrimination position with light rays, In an optical sorting device consisting of a device for inspecting the amount of light from the object to be sorted and discriminating it, and a device for sorting the object to be sorted which has been discriminated as an abnormal particle, a fluorescent lamp is used as the light source, and the light source is It is housed in a substantially airtight box, and a temperature control device capable of automatic control is installed in the box, and when the temperature in the box at the time of adjustment setting is 20 to 40 ° C, the temperature is kept within that range. Hold and
If the temperature inside the box is lower than 20 ° C, the temperature fluctuation range is within ± 3 ° C, and the temperature inside the box is
When the temperature is higher than 40 ° C, the temperature fluctuation range is kept within ± 5 ° C.
＜作用＞ 本発明の光学的選別装置では、被選別物は供給装置に
よって判別位置に供給される。判別位置では被選別物に
光線が照射される。被選別物からの反射光や透過光の光
量によって正常粒か異常粒かが判別される。異常粒と判
別された時には選別除去される。光源が収容されたボッ
クス内には自動制御可能な温度調節装置が設けられてい
て、ボックス内の温度を所定の範囲内に保つ。即ち、調
節設定時におけるボックス内の温度が、20〜40℃の場合
には、温度をその範囲内に保持し、また、ボックス内の
温度が20℃より低い場合には、温度の変動範囲を±３℃
以内に、また、ボックス内の温度が40℃より高い場合に
は、温度の変動範囲を±５℃以内にそれぞれ保持する。
これは温度を希望の値まで大きく調節するのではなく、
調節設定時の温度を基準とし、温度の変動だけを一定範
囲内に押えるものであるから、その調節は楽で、極めて
短時間に行うことができる。そして、この結果、光源に
蛍光灯を用いていても、選別作業中における、光量の変
動が押えられ、高精度での選別が可能となる。<Operation> In the optical sorting apparatus of the present invention, the objects to be sorted are supplied to the determination position by the supply device. At the discrimination position, the object to be sorted is irradiated with light rays. Normal particles or abnormal particles are discriminated by the amount of reflected light or transmitted light from the object to be sorted. When it is determined that the particles are abnormal, they are selectively removed. A temperature control device capable of automatic control is provided in the box containing the light source to keep the temperature in the box within a predetermined range. That is, when the temperature inside the box at the time of adjustment setting is 20 to 40 ° C, the temperature is kept within that range, and when the temperature inside the box is lower than 20 ° C, the temperature fluctuation range is ± 3 ° C
If the temperature inside the box is higher than 40 ° C, the temperature fluctuation range is kept within ± 5 ° C.
This does not greatly adjust the temperature to the desired value,
Since the temperature at the time of setting the adjustment is used as a reference and only the temperature fluctuation is suppressed within a certain range, the adjustment is easy and can be performed in an extremely short time. As a result, even if a fluorescent lamp is used as the light source, fluctuations in the amount of light during the sorting work are suppressed, and sorting with high accuracy becomes possible.
＜実施例＞ 本発明の光学的選別装置の実施例を図面について説明
する。１はシュートで、広幅のものが用いられ、傾斜状
に設置されていて、被選別粒状物はこれに沿って流下さ
せられる。２は光源で、判別位置３の表裏両側に設けら
れていて、シュート１の下端から飛び出した光選別物の
表裏両面に光線を照射する。この光源２には蛍光灯が使
用されている。４はバックグラウンドで、正常粒と同一
の照度になるように、位置を前後移動させて、作業前
に、調節設定する。<Example> An example of the optical sorting apparatus of the present invention will be described with reference to the drawings. A chute 1 having a wide width is installed in an inclined shape, and the granular material to be sorted is made to flow down along it. Reference numeral 2 denotes a light source, which is provided on both the front and back sides of the discrimination position 3 and irradiates light rays on both the front and back surfaces of the light-selected object jumping out from the lower end of the chute 1. A fluorescent lamp is used as the light source 2. Reference numeral 4 is a background, which is moved back and forth so that the illuminance is the same as that of normal grains, and is adjusted and set before work.
５は光センサで、判定位置からの光線の光量を検出す
る。光センサ５には、被選別物とバックグラウンド４か
らの両方の光線が入射する。そして、光センサ５での検
出光量値が、基準光量値と差のある場合に、異常粒と判
別する。なお、この基準光量値は、選別作業前に、正常
粒の場合の光量値に基ずいて予め設定しておく。An optical sensor 5 detects the amount of light rays from the determination position. Both light rays from the object to be sorted and the background 4 are incident on the optical sensor 5. Then, when the light quantity value detected by the optical sensor 5 is different from the reference light quantity value, it is determined as an abnormal particle. It should be noted that this reference light amount value is set in advance based on the light amount value in the case of normal particles before the sorting operation.
６はエゼクタで、光センサ５が異常粒を発見すると、
このエゼクタ６に信号が送られ、エゼクタ６は噴風作動
して、当該異常粒を吹き飛ばす。７は正常粒受筒７で、
噴風を受けなかった正常粒がこの中に入る。８は異常粒
受筒で、噴風によって吹き飛ばされた異常粒がこの中に
飛び込む。以上の光源２やバックグラウンド４、光セン
サ５などは判別位置の両側にそれぞれ設けられたボック
ス９に収容されている。10は透明体製の光線透過窓であ
る。6 is an ejector, and when the optical sensor 5 finds an abnormal particle,
A signal is sent to the ejector 6, and the ejector 6 operates by blowing air to blow off the abnormal particles. 7 is a normal grain receiving cylinder 7,
Normal grains that did not receive the blast enter into this. Reference numeral 8 denotes an abnormal particle receiving cylinder into which abnormal particles blown off by a blast blow. The above-mentioned light source 2, background 4, optical sensor 5 and the like are housed in boxes 9 provided on both sides of the discrimination position. 10 is a light transmission window made of a transparent material.
11は温風ファンで、両ボックス９の底部に設けられて
いて、ファン11が作動すると、温風が吹き出し、ボック
ス９内が温められる。12は温度センサで、各ボックス９
内に設けられている。この温度センサ12でボックス９内
の温度を測定し、所定温度以下の場合にはファン11を作
動させ、また、所定温度に達すると、ファン11を停止さ
せ、これによってボックス９内の温度を所定の範囲内に
保持する。Reference numeral 11 denotes a warm air fan, which is provided at the bottom of both boxes 9. When the fans 11 operate, warm air blows out to warm the inside of the box 9. 12 is a temperature sensor, each box 9
It is provided inside. The temperature inside the box 9 is measured by the temperature sensor 12, and the fan 11 is operated when the temperature is lower than a predetermined temperature, and when the temperature reaches a predetermined temperature, the fan 11 is stopped, whereby the temperature inside the box 9 is controlled to a predetermined temperature. Keep within the range of.
通常の蛍光灯を用いて試験をした結果は次の通りであ
った。作業前のボックス内の温度が20〜40℃の場合に
は、その温度範囲内では、温度変化によって選別精度に
影響は出なかった。作業前のボックス内温度が20℃より
低い場合は、温度の変動範囲を±３℃以内に保持するこ
とによって、選別精度を安定化できた。また40℃よりも
高い場合には、温度の変動範囲を±５℃以内に保持する
ことによって、選別精度を安定化できた。なお、作業を
続けて、ボックス内の温度が変動した場合には、必要に
応じて再調節する。The results of the test using a normal fluorescent lamp are as follows. When the temperature in the box before work was 20 to 40 ° C, the temperature change did not affect the sorting accuracy within the temperature range. When the temperature inside the box before work was lower than 20 ° C, the sorting accuracy could be stabilized by keeping the temperature fluctuation range within ± 3 ° C. When the temperature was higher than 40 ° C, the accuracy of sorting could be stabilized by keeping the temperature fluctuation range within ± 5 ° C. If the temperature in the box fluctuates after continuing the work, readjust as necessary.
なお、前記本発明に於いて、ボックス９内を加熱する
装置には温風ファン11以外の加熱装置も用いることがで
きる。また、高温地方では加熱装置に代えて冷却装置を
用いることもある。要するに、ボックス内を所定の範囲
内の温度に保持できる装置であれば、どのような装置を
用いてもよい。温度センサ12の種類も自由に定めること
ができる。また、判別位置に被選別物を供給するには、
前記実施例のシュートの他、単なる自然落下や別種の供
給装置を用いてもよい。In the present invention, a heating device other than the warm air fan 11 can be used as a device for heating the inside of the box 9. In a high temperature area, a cooling device may be used instead of the heating device. In short, any device may be used as long as it can maintain the temperature inside the box within a predetermined range. The type of the temperature sensor 12 can be freely determined. Also, to supply the objects to be sorted to the discrimination position,
In addition to the chute of the above-mentioned embodiment, a simple free fall or another kind of supply device may be used.
＜発明の効果＞ 本発明の光学的選別装置では、光源などが収容された
ボックス内に温度調節装置が設けられていて、調節設定
時におけるボックス内の温度が、20〜40℃の場合には、
温度をその範囲内に保持し、また、ボックス内の温度が
20℃より低い場合には、温度の変動範囲を±３℃以内
に、また、ボックス内の温度が40℃より高い場合には、
温度の変動範囲を±５℃以内にそれぞれ保持する。この
調節は温度の変動だけを押えるものであるから、その調
節は瞬時に行うことができ、従来のような調節中の不良
選別の発生がない。このように本発明では、ボックス内
の温度の変動を押え、光源である蛍光灯の光量の変動を
無くすので、外気温や、運転状況の如何にかかわりな
く、常に安定した高精度の選別作業を行うことができ
る。<Effects of the Invention> In the optical sorting device of the present invention, a temperature control device is provided in a box containing a light source and the like, and when the temperature in the box at the time of adjustment setting is 20 to 40 ° C. ,
Keeps the temperature within that range, and
When the temperature is lower than 20 ℃, the temperature fluctuation range is within ± 3 ℃, and when the temperature in the box is higher than 40 ℃,
Keep the temperature fluctuation range within ± 5 ° C. Since this adjustment suppresses only the fluctuation of temperature, the adjustment can be performed instantaneously, and there is no occurrence of defective selection during adjustment as in the past. As described above, in the present invention, since the fluctuation of the temperature in the box is suppressed and the fluctuation of the light quantity of the fluorescent lamp which is the light source is eliminated, regardless of the outside air temperature and the operating condition, the stable and highly accurate sorting work is always performed. It can be carried out.
図面は本発明の光学的選別装置の実施例の概要を示す縦
断側面図である。 １……シュート、２……光源、３……判別位置、４……
バックグラウンド、５……光センサ、６……エゼクタ、
７……正常粒受筒、８……異常粒受筒、９……ボック
ス、11……温風ファン、12……温度センサ。The drawing is a vertical sectional side view showing an outline of an embodiment of the optical sorting apparatus of the present invention. 1 ... shoot, 2 ... light source, 3 ... discrimination position, 4 ...
Background, 5 ... Optical sensor, 6 ... Ejector,
7: Normal grain receiver, 8: Abnormal grain receiver, 9: Box, 11 ... Warm air fan, 12 ... Temperature sensor.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭51−27568（ＪＰ，Ａ) 実開 昭57−145577（ＪＰ，Ｕ) 実公 昭30−5386（ＪＰ，Ｙ１) ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-51-27568 (JP, A) Actual development S57-145577 (JP, U) Actual publication S30-5386 (JP, Y1)
Claims (1)
と、判別位置に達した被選別物に光線を照射する光源
と、被選別物からの光量を検査して判別する装置と、異
常粒と判別された被選別物を選別する装置とからなる光
学的選別装置に於いて、光源に蛍光灯を用い、かつ、光
源を略気密のボックス内に収容すると共に、ボックス内
には自動制御可能な温度調節装置を設けて、調節設定時
におけるボックス内の温度が、20〜40℃の場合には、温
度をその範囲内に保持し、また、ボックス内の温度が20
℃より低い場合には、温度の変動範囲を±３℃以内に、
また、ボックス内の温度が40℃より高い場合には、温度
の変動範囲を±５℃以内にそれぞれ保持するようにした
ことを特徴とする光学的選別装置。1. A supply device for feeding an object to be sorted to a discriminating position, a light source for irradiating the object to be sorted which has reached the discriminating position with a light beam, a device for inspecting the amount of light from the object to be discriminated, and abnormal particles. In an optical sorting device that consists of a device that sorts objects to be sorted, a fluorescent lamp is used as the light source, and the light source is housed in a substantially airtight box, and the box can be automatically controlled. If the temperature inside the box at the time of adjustment setting is 20 to 40 ° C, the temperature is kept within that range, and the temperature inside the box is 20
If the temperature is lower than ℃, change the temperature within ± 3 ℃.
Further, when the temperature in the box is higher than 40 ° C, the temperature variation range is kept within ± 5 ° C, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62271045A JP2538284B2 (en) | 1987-10-26 | 1987-10-26 | Optical sorting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62271045A JP2538284B2 (en) | 1987-10-26 | 1987-10-26 | Optical sorting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01111481A JPH01111481A (en) | 1989-04-28 |
| JP2538284B2 true JP2538284B2 (en) | 1996-09-25 |
Family
ID=17494635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62271045A Expired - Fee Related JP2538284B2 (en) | 1987-10-26 | 1987-10-26 | Optical sorting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2538284B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE1020796A3 (en) | 2012-07-20 | 2014-05-06 | Visys Nv | OPTICAL INSPECTION MACHINE AND OPTICAL SORTING MACHINE. |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57145577U (en) * | 1981-03-09 | 1982-09-13 |
-
1987
- 1987-10-26 JP JP62271045A patent/JP2538284B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01111481A (en) | 1989-04-28 |
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