JP2012236135A - Object sorting apparatus - Google Patents

Object sorting apparatus Download PDF

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JP2012236135A
JP2012236135A JP2011105881A JP2011105881A JP2012236135A JP 2012236135 A JP2012236135 A JP 2012236135A JP 2011105881 A JP2011105881 A JP 2011105881A JP 2011105881 A JP2011105881 A JP 2011105881A JP 2012236135 A JP2012236135 A JP 2012236135A
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flow rate
air
compressed air
air nozzle
measured
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Fumiharu Yabunaka
文春 薮中
Kenji Goto
謙治 後藤
Kiyoshi Katsu
清志 勝
Kazunari Tsutsui
一就 筒井
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Mitsubishi Electric Corp
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Abstract

PROBLEM TO BE SOLVED: To provide an object sorting apparatus that has low cost and facilitates maintenance of an apparatus, and also high accuracy of sorting an object.SOLUTION: The apparatus includes a flow measurement means 26 for measuring a flow rate upon jetting air from each air nozzle 7. This flow measurement means 26 includes: a flowmeter 24, which is serially or parallelly connected with an on-off valve 23 for connecting between a compressed air source 22 and a dispensing container 21 for dispensing a compressed air from the compressed air source 22 to each solenoid valve 8; and a flow rate calculation means 25 for individually calculating each flow rate upon jetting air of each air nozzle 7, based on a difference of a flow rate change of the compressed air measured by the flowmeter 24, when each solenoid valve 8 is opened or closed sequentially stepwise by a solenoid valve driving means 15.

Description

この発明は、選別収集物と除去対象物とを選別するための物体選別装置に関するものである。   The present invention relates to an object sorting apparatus for sorting a sorted collection and a removal target.

例えば、各種のプラスチック製容器には、焼却時に腐食性ガスを発生したり、難燃性を有するものがあるので、プラスチック製容器を焼却したり、再生利用する際には、各種のプラスチック製容器の内から、腐食性ガスを発生したり難燃性を有する化学組成のあるプラスチック製容器を選別して除去する必要がある。   For example, various plastic containers generate corrosive gas during incineration or have flame retardancy, so when incinerating or recycling plastic containers, various plastic containers It is necessary to select and remove a plastic container having a chemical composition that generates corrosive gas or has flame retardancy.

このため、従来、選別収集物と除去対象物とを選別するための物体選別装置が提供されている(例えば、下記の特許文献1参照)。すなわち、従来の物体選別装置は、プラスチック製容器などの物体を搬送するベルトコンベアなどの搬送手段と、物体に放射線を照射する手段と、物体を透過した放射線の透過率をそれぞれ検出する検出手段と、この検出手段で検出した放射線の透過率をデータ処理して選別収集物と除去対象物とを識別するデータ処理手段と、データ処理手段から送られる識別情報に基づいて特定元素を含有する除去対象物を排出する空気圧力式の複数のエアーノズルを有する排出機構とを備えている。   For this reason, conventionally, an object sorting apparatus for sorting a sorted collection and a removal target is provided (for example, see Patent Document 1 below). That is, the conventional object sorting apparatus includes a conveying means such as a belt conveyor for conveying an object such as a plastic container, a means for irradiating the object with radiation, and a detecting means for detecting the transmittance of the radiation transmitted through the object, respectively. , Data processing means for performing data processing on the transmittance of radiation detected by the detection means to identify the sorted collection object and the removal object, and a removal object containing a specific element based on the identification information sent from the data processing means And a discharge mechanism having a plurality of air pressure type air nozzles for discharging objects.

そして、ベルトコンベアなどの搬送手段によって、選別収集物と除去対象物とが混在した状態で連続して搬送されてくるので、放射線の透過率を検出手段で検出し、検出した放射線の透過率をデータ処理手段でデータ処理して特定元素を含有する物体かどうかを判定することで選別収集物と除去対象物とを識別し、その識別情報を排出機構に送る。そして、排出機構は、データ処理手段から送られる識別情報に基づいて、例えば除去対象物であれば、この除去対象物に対して所定のエアーノズルから圧縮空気を間欠的に噴射して搬送軌道を変更させて除去対象物を除去する。   Then, since the sorted collection and the removal target are continuously conveyed by a conveying means such as a belt conveyor, the radiation transmittance is detected by the detecting means, and the detected radiation transmittance is determined. The data processing means performs data processing to determine whether or not the object contains a specific element, thereby identifying the selected collection object and the object to be removed, and sending the identification information to the discharge mechanism. Then, based on the identification information sent from the data processing means, the discharge mechanism, for example, if it is a removal target, intermittently injects compressed air from a predetermined air nozzle to the removal target, thereby moving the transport path. Change the object to be removed.

また、この従来の物体選別装置では、各排出機構を構成する空気圧力式の各エアーノズルに対して個別に空気噴射時の空気圧を検出する空気圧検出手段を設け、それらの空気圧検出手段で検出される空気圧の検出値が予め設定した基準値以下であれば、エアーノズルの詰まりなどの異常もしくは故障であることを外部に報知して排出機構の維持管理を行えるようにしている。   In addition, in this conventional object sorting apparatus, air pressure detecting means for individually detecting the air pressure at the time of air injection is provided for each air pressure type air nozzle constituting each discharging mechanism, and the air pressure detecting means detects the air pressure. If the detected value of the air pressure is equal to or less than a preset reference value, it is notified to the outside that there is an abnormality or failure such as clogging of the air nozzle so that the discharge mechanism can be maintained and managed.

特許第3307968号公報Japanese Patent No. 3307968

上記の特許文献1記載の従来の物体選別装置は、飲料水や食用油などを含む消耗品を収容するためのプラスチック容器やチューブ容器を選別対象物体としており、選別対象物体の大きさが数10ミリメートルから数100ミリメートルの大きさのものである。このため、選別対象物体が検出手段を通過する時間が比較的長いので、選別対象物体の内から選別収集物と除去対象物とを区別して検出するのに許容される検出時間幅も十分に確保することができる。   The conventional object sorting apparatus described in Patent Document 1 uses a plastic container or a tube container for containing consumables including drinking water or edible oil as a sorting target object, and the size of the sorting target object is several tens. The size is from millimeters to several hundreds of millimeters. For this reason, since the time required for the selection target object to pass through the detection means is relatively long, a sufficient detection time width for distinguishing and detecting the selected collection object and the removal target object from the selection target object is sufficiently secured. can do.

これに対して、選別対象物体が数ミリメートルから10数ミリメートルの大きさに粉砕されたり、篩いにかけられたものである場合、選別対象物体の大きさが小さいので、選別対象物体が検出手段を通過する時間が短くなり、そのため、選別対象物体の内から選別収集物と除去対象物とを区別して検出するのに許容される検出時間幅も1桁以上短くなる。これに合わせて、選別対象物と除去対象物との誤選別を防ぐ上では、圧縮空気の噴出動作に費やすことのできる動作時間幅も1桁以上短くなる。そして、このような高速動作に対応できるようにするためには、各エアーノズルに対して個別に設けられた空気圧検出手段による空気圧の検出応答速度も1桁以上高速にする必要がある。   On the other hand, if the object to be selected is crushed to a size of several millimeters to several tens of millimeters or sieved, the object to be selected passes through the detection means because the size of the object to be selected is small. Therefore, the detection time width allowed to distinguish and detect the sorted collection object and the removal target object from among the selection target objects is also shortened by one digit or more. In accordance with this, in order to prevent erroneous sorting between the sorting object and the removal object, the operating time width that can be spent for the compressed air ejection operation is also shortened by one digit or more. In order to cope with such a high-speed operation, the air pressure detection response speed by the air pressure detecting means provided individually for each air nozzle must be increased by one digit or more.

ところで、通常、このような検出応答速度の早い空気圧検出手段は、検出応答速度の遅い検出手段に比べて高価である。しかも、従来技術の場合、空気圧力式の排出機構の各エアーノズルごとに独立した空気圧検出手段が必要になるので、空気圧検出手段の数が多くなり、装置全体の価格が一層高価になる。   By the way, normally, such air pressure detection means having a high detection response speed is more expensive than detection means having a low detection response speed. Moreover, in the case of the prior art, an independent air pressure detecting means is required for each air nozzle of the air pressure type discharge mechanism, so that the number of air pressure detecting means is increased and the price of the entire apparatus is further increased.

しかも、空気圧力式の排出機構の各エアーノズルごとに独立した空気圧検出手段が設けられているので、空気圧検出値の相対的な校正をそれぞれの排出機構ごとに行う必要があり、装置の維持管理が煩雑になり易いといった問題がある。   In addition, since an independent air pressure detection means is provided for each air nozzle of the air pressure type discharge mechanism, it is necessary to perform relative calibration of the air pressure detection value for each discharge mechanism, and maintenance of the apparatus There is a problem that is likely to become complicated.

さらに、選別対象物体の大きさが比較的小さくて数ミリメートルから10数ミリメートルの場合、圧縮空気を噴射するエアーノズルの口径は、選別対象物体の寸法に合わせて小さくする必要がある。そうすると、エアーノズルの噴射口の開口面積が小さな異物や汚染物の蓄積などによって次第に減少し、これに伴い、圧縮空気の噴射量も減少して所定量の圧縮空気を噴射できなくなる恐れが高くなる。   Furthermore, when the size of the object to be selected is relatively small and is from several millimeters to several tens of millimeters, the diameter of the air nozzle that ejects the compressed air needs to be reduced according to the size of the object to be selected. As a result, the opening area of the air nozzle outlet gradually decreases due to accumulation of small foreign matter or contaminants, and with this, the amount of compressed air injected also decreases, increasing the risk that a predetermined amount of compressed air cannot be injected. .

ところが、従来技術のように、空気圧検出手段で検出される空気圧の検出値が予め設定した基準値以下であれば、エアーノズルに異常があると判断するような構成の場合には、エアーノズルの開口部が完全に塞がれている場合でもその異常を十分に検出できないことがある。すなわち、エアーノズルの正常時には、圧縮空気を噴射する際、空気圧検出手段で検出される空気圧が高くなるが、エアーノズルの噴射口が異物や汚染物の蓄積などによって完全に塞がれている場合でも、空気圧検出値が予め設定された基準値以下まで低下しなくなり、エアーノズルの異常もしくは故障であることを検出することが難しく、排出機構の維持管理を十分に行えないなどの不具合を生じる。   However, as in the prior art, if the detected value of the air pressure detected by the air pressure detecting means is equal to or less than a preset reference value, in the case of a configuration in which it is determined that there is an abnormality in the air nozzle, Even when the opening is completely closed, the abnormality may not be sufficiently detected. That is, when the air nozzle is normal, the air pressure detected by the air pressure detection means becomes high when jetting compressed air, but the air nozzle outlet is completely blocked by accumulation of foreign matter or contaminants However, the air pressure detection value does not decrease below a preset reference value, and it is difficult to detect an abnormality or failure of the air nozzle, resulting in problems such as insufficient maintenance and management of the discharge mechanism.

この発明は、上記のような問題点を解決するためになされたものであり、安価でかつ装置の維持管理が容易で、物体選別の検出精度の高い物体選別装置を提供することを目的としている。   The present invention has been made to solve the above-described problems, and an object thereof is to provide an object sorting apparatus that is inexpensive, easy to maintain and manage, and has high object sorting detection accuracy. .

この発明は、搬送手段により搬送される選別収集物と除去対象物とが混在した選別対象物体を識別手段で識別し、その識別結果に基づいて上記搬送手段の搬送経路に向けて配置された複数のエアーノズルに個別に接続された各電磁弁を電磁弁駆動手段により間欠的に開閉制御し、上記各エアーノズルから噴射される圧縮空気により移送軌道を変更して除去対象物を除去する物体選別装置において、上記各エアーノズルの空気噴射時の流量を測定する流量測定手段を備え、この流量測定手段は、圧縮空気源とこの圧縮空気源からの圧縮空気を上記各電磁弁に分配供給する分配供給容器との間を接続する開閉弁に対して、直列または並列に流量計が接続されるとともに、上記電磁弁駆動手段により上記各電磁弁を順次段階的に開放または閉鎖していった場合の、上記流量計で測定される圧縮空気の流量変化の差に基づいて上記各エアーノズルの空気噴射時の各流量を個別に算出する流量算出手段を備えることを特徴としている。   According to the present invention, a classification target object in which a selection collection object and a removal target object conveyed by the conveyance means are identified by the identification means, and a plurality of objects arranged toward the conveyance path of the conveyance means based on the identification result Object selection that removes the object to be removed by intermittently controlling the opening and closing of each solenoid valve individually connected to the air nozzle by the solenoid valve driving means, and changing the transfer track by the compressed air ejected from each air nozzle. The apparatus further comprises a flow rate measuring means for measuring a flow rate at the time of air injection of each air nozzle. The flow rate measuring means distributes and supplies the compressed air from the compressed air source and the compressed air from the compressed air source to the electromagnetic valves. A flow meter is connected in series or in parallel to the open / close valve connected to the supply container, and the electromagnetic valves are sequentially opened or closed by the electromagnetic valve driving means. In the case of Tsu it is characterized in that it comprises a flow rate calculating means for calculating each of them individually flow rate at the air injection of each air nozzle based on a difference in flow rate change of the compressed air to be measured by the flow meter.

この発明によれば、複数のエアーノズルが設けられる場合でも、各エアーノズルの流量を測定する流量計は1台で賄うことができる。このため、各エアーノズルごとに流量測定の過渡応答特性の校正や流量測定値の校正をする必要が無く、従来に比べてエアーノズルの維持管理の手間を軽減することができる。しかも、検出応答時間が早い高価な流量計を使用しても、各エアーノズルごとに個別に流量計を設置する必要が無く、各エアーノズルの流量を測定するために必要とする流量計の数が1台で済み、装置製作の価格上昇を抑制することができる。   According to this invention, even when a plurality of air nozzles are provided, a single flow meter for measuring the flow rate of each air nozzle can be provided. For this reason, it is not necessary to calibrate the transient response characteristics of the flow rate measurement and the calibration of the flow rate measurement value for each air nozzle, and the labor for maintenance of the air nozzle can be reduced as compared with the conventional case. In addition, even if an expensive flow meter with a fast detection response time is used, there is no need to install a separate flow meter for each air nozzle, and the number of flow meters required to measure the flow rate of each air nozzle However, the cost of manufacturing the device can be suppressed.

また、異物や汚染物質の蓄積によってエアーノズルの噴射口の開口面積が次第に減少し、これに伴い、圧縮空気の噴射量も減少して所定量の圧縮空気を噴射できなくなっても、その異常状態が圧縮空気の噴射量の減少量として確実に測定できるので、エアーノズルの異常や故障の検出精度の高い物体選別装置を提供することが可能となる。   In addition, the accumulation area of foreign matter and contaminants gradually reduces the opening area of the air nozzle's injection port, and even if the amount of compressed air injected decreases and the specified amount of compressed air cannot be injected, the abnormal state Therefore, it is possible to reliably measure the reduction amount of the compressed air injection amount, so that it is possible to provide an object sorting device with high detection accuracy of an abnormality or failure of the air nozzle.

本発明の実施の形態1における物体選別装置の構成を示す斜視図である。It is a perspective view which shows the structure of the object selection apparatus in Embodiment 1 of this invention. 同物体選別装置の構成を示す側面図である。It is a side view showing the composition of the same object sorting device. 同物体選別装置において、各エアーノズル回路に流れる圧縮空気の流量の測定方法を示す説明図である。It is explanatory drawing which shows the measuring method of the flow volume of the compressed air which flows into each air nozzle circuit in the same object selection device. 同物体選別装置において、各エアーノズル回路に流れる圧縮空気の流量の他の測定方法を示す説明図である。It is explanatory drawing which shows the other measuring method of the flow volume of the compressed air which flows into each air nozzle circuit in the same object selection device. 同物体選別装置において、各エアーノズル回路に流れる圧縮空気の流量の他の測定方法を示す説明図である。It is explanatory drawing which shows the other measuring method of the flow volume of the compressed air which flows into each air nozzle circuit in the same object selection device. 同物体選別装置において、各エアーノズル回路に流れる圧縮空気の流量のさらに他の測定方法を示す説明図である。It is explanatory drawing which shows the further another measuring method of the flow volume of the compressed air which flows into each air nozzle circuit in the same object selection device. 本発明の実施の形態2における物体選別装置の構成を示す斜視図である。It is a perspective view which shows the structure of the object selection apparatus in Embodiment 2 of this invention. 同物体選別装置の構成を示す側面図である。It is a side view showing the composition of the same object sorting device. 同物体選別装置において、各エアーノズル回路に流れる圧縮空気の流量の測定方法を示す説明図である。It is explanatory drawing which shows the measuring method of the flow volume of the compressed air which flows into each air nozzle circuit in the same object selection device. 同物体選別装置において、各エアーノズル回路に流れる圧縮空気の流量の他の測定方法を示す説明図である。It is explanatory drawing which shows the other measuring method of the flow volume of the compressed air which flows into each air nozzle circuit in the same object selection device.

実施の形態1.
図1は本発明の実施の形態1における物体選別装置を示す構成図、図2は同物体選別装置の構成を示す側面図である。
Embodiment 1 FIG.
FIG. 1 is a configuration diagram showing an object sorting device according to Embodiment 1 of the present invention, and FIG. 2 is a side view showing the configuration of the object sorting device.

この実施の形態1の物体選別装置1は、選別収集物2と除去対象物3とが混在した選別対象物体4を搬送する搬送手段としてのベルトコンベア6を有するとともに、このベルトコンベア6の末端部に近接してベルトコンベア6の幅方向に沿って多数のエアーノズル7が配列されている。各エアーノズル7は、選別対象物体4が通過するエリアに対応した除去選別作業を担当するものであり、各エアーノズル7には個別に電磁弁8が接続されている。   The object sorting apparatus 1 according to the first embodiment has a belt conveyor 6 as a transporting means for transporting a sorting target object 4 in which a sorted collection 2 and a removal target 3 are mixed, and an end portion of the belt conveyor 6. A large number of air nozzles 7 are arranged along the width direction of the belt conveyor 6 in proximity to the belt conveyor 6. Each air nozzle 7 is in charge of the removal and selection work corresponding to the area through which the selection target object 4 passes, and an electromagnetic valve 8 is individually connected to each air nozzle 7.

また、この実施の形態1の物体選別装置1は、ベルトコンベア6により搬送される選別対象物体4から選別収集物2と除去対象物3とを識別する識別手段10が設けられている。   In addition, the object sorting apparatus 1 according to the first embodiment is provided with an identification unit 10 for distinguishing the sorted collection object 2 and the removal object 3 from the sorting object 4 conveyed by the belt conveyor 6.

この識別手段10は、ベルトコンベア6の末端部とエアーノズル7との間の箇所に対して、薄いシート状に放射光L1を照射する光源11と、この光源11からの放射光L1が選別収集物2と除去対象物3のそれぞれの物性および表面状態に応じて反射される反射光L2を検出する反射光検出手段12と、この反射光検出手段12で検出される反射光L2の情報をデータ処理して選別収集物2と除去対象物3とを判別するマイクロコンピュータ等からなるデータ処理手段13とからなる。   The identification means 10 includes a light source 11 that irradiates a portion of the belt conveyor 6 between the end portion of the belt conveyor 6 and the air nozzle 7 with a radiated light L1 in a thin sheet shape, and a radiated light L1 from the light source 11 is selectively collected Reflected light detection means 12 for detecting the reflected light L2 reflected according to the physical properties and surface state of the object 2 and the removal object 3, and information on the reflected light L2 detected by the reflected light detection means 12 as data The data processing means 13 is composed of a microcomputer or the like that discriminates the sorted collection 2 and the removal target 3 by processing.

また、この実施の形態1の物体選別装置1は、このデータ処理手段13の判別結果に基づいて、各電磁弁8の内から除去対象物3に対応した箇所にある電磁弁8を選択して開閉駆動する電磁弁駆動手段15を有する。   Further, the object sorting device 1 according to the first embodiment selects the electromagnetic valve 8 at the location corresponding to the removal target 3 from each electromagnetic valve 8 based on the determination result of the data processing means 13. It has electromagnetic valve drive means 15 that opens and closes.

さらに、この実施の形態1の物体選別装置1は、上記のエアーノズル7、接続管17、電磁弁8、接続管18が順次接続されてエアーノズル回路19が構成されており、これらの各エアーノズル回路19が分配供給容器21に接続されている。また、圧縮空気源22と分配供給容器21との間には、その間の流路を開閉する開閉弁23が設けられるとともに、分配供給容器21と開閉弁23との間には、開閉弁23を通して流れる圧縮空気の流量を測定する流量計24が直列に接続されている。   Further, in the object sorting apparatus 1 according to the first embodiment, the air nozzle 7 is connected to the air nozzle 7, the connecting pipe 17, the electromagnetic valve 8, and the connecting pipe 18 in order, and an air nozzle circuit 19 is configured. A nozzle circuit 19 is connected to the distribution supply container 21. Further, an open / close valve 23 for opening and closing the flow path between the compressed air source 22 and the distribution supply container 21 is provided, and an open / close valve 23 is provided between the distribution supply container 21 and the open / close valve 23. A flow meter 24 for measuring the flow rate of the flowing compressed air is connected in series.

さらにまた、この実施の形態1の物体選別装置1は、流量算出手段25と報知手段27とを備える。
ここに、流量算出手段25は、上記の電磁弁駆動手段15により各電磁弁8を順次段階的に開放または閉鎖していった場合に、流量計24で測定される圧縮空気の流量変化の差に基づいて各エアーノズル7の空気噴射時の各流量を個別に算出するものである。そして、この流量算出手段25と流量計24とで各エアーノズル7の空気噴射時の流量を測定する特許請求の範囲における流量測定手段26が構成されている。
Furthermore, the object sorting apparatus 1 according to the first embodiment includes a flow rate calculation unit 25 and a notification unit 27.
Here, the flow rate calculation means 25 is the difference in the change in the flow rate of the compressed air measured by the flow meter 24 when the electromagnetic valve driving means 15 opens or closes the electromagnetic valves 8 stepwise. Based on the above, each flow rate at the time of air injection of each air nozzle 7 is calculated individually. The flow rate calculation means 25 and the flow meter 24 constitute a flow rate measurement means 26 in the scope of claims for measuring the flow rate of each air nozzle 7 during air injection.

また、報知手段27は、流量測定手段26で算出される各エアーノズル7の空気噴射時の各流量を予め設定された基準値と比較して測定された流量が基準値以下の場合には、エアーノズル7の異常であると判定してその結果を外部に報知するもので、ディスプレイやランプ等およびその駆動回路で構成される。   Further, when the flow rate measured by comparing each flow rate at the time of air injection of each air nozzle 7 calculated by the flow rate measurement unit 26 with a preset reference value is equal to or less than the reference value, the notification unit 27 The air nozzle 7 is determined to be abnormal, and the result is notified to the outside. The air nozzle 7 is composed of a display, a lamp and the like and a drive circuit thereof.

次に、上記構成を備えた物体選別装置1において、選別収集物2と除去対象物3とが混在した選別対象物体4から除去対象物3のみを選別排除する場合の処理動作について説明する。   Next, in the object sorting apparatus 1 having the above configuration, a processing operation when only the removal target 3 is sorted out from the sorting target object 4 in which the sorted collection 2 and the removal target 3 are mixed will be described.

選別収集物2と除去対象物3とが混在された選別対象物体4は、ベルトコンベア6によって搬送され、ベルトコンベア6の末端部から空中に放出される。空中に放出された選別対象物体4に対して、光源11から薄いシート状に放射光L1が照射されるので、選別対象物体4は放射光L1を横切るように移動する。このとき、選別収集物2と除去対象物3とは放射光L1を受けて、それぞれの物性および表面状態に応じた特性を有する反射光L2を発生させる。この反射光L2は、反射光検出手段12で検出され、選別収集物2と除去対象物3に対応した検出信号に変換されてデータ処理手段13に入力される。   The sorting target object 4 in which the sorted collection 2 and the removal target 3 are mixed is conveyed by the belt conveyor 6 and discharged from the end of the belt conveyor 6 into the air. Since the light source 11 emits the radiated light L1 to the selection target object 4 released into the air, the selection target object 4 moves across the radiated light L1. At this time, the sorted collection 2 and the removal target 3 receive the radiated light L1 and generate reflected light L2 having characteristics according to their physical properties and surface conditions. The reflected light L2 is detected by the reflected light detection means 12, converted into detection signals corresponding to the selected collection object 2 and the removal object 3, and input to the data processing means 13.

データ処理手段13は、反射光L2の情報をデータ処理して選別収集物2と除去対象物3とを判別する。このとき、除去対象物3が存在すると判別された場合、データ処理部は、除去対象物3が通過するタイミングに合わせて電磁弁8が作動するように電磁弁駆動手段15に対して動作制御信号を送信する。これに応じて、電磁弁駆動手段15は、除去対象物3が通過する位置に対応した電磁弁8が開放するように選択して駆動する。   The data processing means 13 performs data processing on the information of the reflected light L2, and discriminates the sorted collection 2 and the removal target 3. At this time, if it is determined that the removal target 3 exists, the data processing unit sends an operation control signal to the electromagnetic valve driving means 15 so that the electromagnetic valve 8 operates in accordance with the timing at which the removal target 3 passes. Send. In response to this, the electromagnetic valve driving means 15 selects and drives so that the electromagnetic valve 8 corresponding to the position through which the removal object 3 passes is opened.

これにより、圧縮空気源22から開閉弁23および流量計24を順次経由して分配供給容器21から供給される圧縮空気が、エアーノズル回路19の開放された電磁弁8を介してエアーノズル7から噴射されるので、その噴射された圧縮空気により、空中に放出された軌道中の除去対象物3に力が作用して、圧縮空気にさらされない選別収集物2の通過軌道S1から排除軌道S2に軌道が変更され、選別収集物2と除去対象物3とが選別される。   As a result, the compressed air supplied from the distribution supply container 21 from the compressed air source 22 via the on-off valve 23 and the flow meter 24 in order from the air nozzle 7 via the electromagnetic valve 8 opened by the air nozzle circuit 19. Since the jetted compressed air is injected, a force is applied to the removal target 3 in the trajectory released into the air, and the passing trajectory S1 of the sorted collection 2 that is not exposed to the compressed air changes to the exclusion trajectory S2. The trajectory is changed, and the sorted collection 2 and the removal target 3 are sorted.

次に、流量測定手段26により各エアーノズル7の空気噴射時の流量を測定し、その測定結果に基づいて各エアーノズル7の異常や故障の有無を判別する場合の動作について説明する。   Next, the operation when the flow rate measurement means 26 measures the flow rate at the time of air injection of each air nozzle 7 and determines the presence or absence of abnormality or failure of each air nozzle 7 based on the measurement result will be described.

なお、ここでは各エアーノズル7の空気噴射時の流量測定は、物体選別装置1が起動される前の運転準備期間中に行うこととするが、これに限らず、装置稼動中の任意の時間に、ベルトコンベア6による選別対象物体4の搬送を一時的に中断して流量測定を行いエアーノズル7の異常の有無を判別するようにしても良い。   Here, the flow rate measurement at the time of air injection of each air nozzle 7 is performed during the operation preparation period before the object sorting device 1 is activated, but is not limited to this, and any time during the operation of the device. In addition, the conveyance of the selection target object 4 by the belt conveyor 6 may be temporarily interrupted to measure the flow rate to determine whether the air nozzle 7 is abnormal.

図3に示すように、流量算出手段25は、電磁弁駆動手段15に指令を与え、先ず全てのエアーノズル回路19の電磁弁8が開いた状態にする。この状態から流量算出手段25は、電磁弁駆動手段15に指令を与え、各電磁弁8を順次段階的に閉じていくとともに、その都度、流量計24で圧縮空気の流量を測定する。   As shown in FIG. 3, the flow rate calculation means 25 gives a command to the electromagnetic valve driving means 15 and first makes the electromagnetic valves 8 of all the air nozzle circuits 19 open. From this state, the flow rate calculation means 25 gives a command to the electromagnetic valve driving means 15 to close each electromagnetic valve 8 stepwise and measure the flow rate of the compressed air with the flow meter 24 each time.

例えば、電磁弁8の数が全部で8個あるとした場合に、各電磁弁8にNo1〜No8までの番号を付すと、最初はNo1〜No8まで全部の電磁弁8を開いた状態にして流量計24で圧縮空気の流量を測定する。次に、No1の電磁弁8を閉じ、残りのNo2〜No8の電磁弁8を開いた状態にして流量計24で圧縮空気の流量を測定する。次に、No1とNo2の電磁弁8を閉じ、残りのNo3〜No8の電磁弁8を開いた状態にして流量計24で圧縮空気の流量を測定する。以下、同様に各電磁弁8を順次閉じるたびに流量を測定して、最後にNo1〜No8まで全部の電磁弁8を閉じた状態にして流量計24で圧縮空気の流量を測定する。   For example, assuming that there are a total of eight solenoid valves 8 and the numbers from No1 to No8 are assigned to the respective solenoid valves 8, all the solenoid valves 8 are first opened from No1 to No8. The flow rate of the compressed air is measured with the flow meter 24. Next, the electromagnetic valve 8 of No. 1 is closed and the remaining electromagnetic valves 8 of No. 2 to No. 8 are opened, and the flow rate of the compressed air is measured by the flow meter 24. Next, the No. 1 and No. 2 electromagnetic valves 8 are closed and the remaining No. 3 to No. 8 electromagnetic valves 8 are opened, and the flow rate of the compressed air is measured by the flow meter 24. Similarly, the flow rate is measured each time the electromagnetic valves 8 are sequentially closed, and finally the flow rate of the compressed air is measured by the flow meter 24 with all the electromagnetic valves 8 from No1 to No8 closed.

これにより、図3に示すように、各電磁弁8を順次閉じるのに対応して流量が段階的に減少する測定データが得られるので、各測定ごとに得られた前後の各圧縮空気の流量の差を個別に算出する。そして、この各流量差が各エアーノズル7の空気噴射時の各流量に個別に対応していることになる。   As a result, as shown in FIG. 3, measurement data in which the flow rate decreases stepwise corresponding to the sequential closing of the solenoid valves 8 can be obtained, so that the flow rates of the compressed air before and after each measurement are obtained. The difference is calculated individually. Each flow rate difference individually corresponds to each flow rate at the time of air injection of each air nozzle 7.

報知手段27は、流量測定手段26で測定される上記各エアーノズル7の空気噴射時の各流量を予め設定された基準値と比較し、測定された各エアーノズル7について、その流量が基準値以下の場合には、エアーノズル7の異常あるいは故障であると判定し、その結果を外部に報知する。これにより、異常と判定されたエアーノズル7の保守管理を実施することができる。   The notifying unit 27 compares each flow rate at the time of air injection of each of the air nozzles 7 measured by the flow rate measuring unit 26 with a preset reference value, and the flow rate of each measured air nozzle 7 is the reference value. In the following cases, it is determined that the air nozzle 7 is abnormal or out of order, and the result is notified to the outside. Thereby, maintenance management of the air nozzle 7 determined to be abnormal can be performed.

なお、図3に示した例では、最初に全てのエアーノズル回路19の電磁弁8が開いた状態から、各電磁弁8を順次段階的に閉鎖していくとともに、その都度、流量計24で圧縮空気の流量を測定するようにしているが、これとは逆の手順で、図4に示すように、最初に全てのエアーノズル回路19の電磁弁8を閉じた状態から、各電磁弁8を順次段階的に開いていくとともに、その都度、流量計24で圧縮空気の流量を測定するようにしてもよい。   In the example shown in FIG. 3, the electromagnetic valves 8 of all the air nozzle circuits 19 are initially opened, and then each electromagnetic valve 8 is closed in a stepwise manner. The flow rate of the compressed air is measured, but in the reverse procedure, as shown in FIG. 4, the electromagnetic valves 8 of all the air nozzle circuits 19 are first closed and then each electromagnetic valve 8 is closed. May be opened step by step, and the flow rate of the compressed air may be measured by the flow meter 24 each time.

例えば、電磁弁8の数が全部で8個(番号No1〜No8)あるとすれば、最初はNo1〜No8まで全部の電磁弁8を閉じた状態にして流量計24で圧縮空気の流量を測定する。次に、No1の電磁弁8を開き、残りのNo2〜No8の電磁弁8を閉じた状態にして流量計24で圧縮空気の流量を測定する。次に、No1とNo2の電磁弁8を開き、残りのNo3〜No8の電磁弁8を閉じた状態にして流量計24で測定される圧縮空気の流量を求める。以下、同様に各電磁弁8を順次開くたびに流量を測定し、最後にNo1〜No8の全部の電磁弁8を開いた状態にして流量計24で圧縮空気の流量を測定する。   For example, if there are a total of 8 solenoid valves 8 (No. 1 to No. 8), the flow rate of the compressed air is measured with the flow meter 24 with No. 1 to No. 8 being closed at first. To do. Next, the No. 1 electromagnetic valve 8 is opened and the remaining No. 2 to No. 8 electromagnetic valves 8 are closed, and the flow rate of the compressed air is measured by the flow meter 24. Next, the No. 1 and No. 2 electromagnetic valves 8 are opened, and the remaining No. 3 to No. 8 electromagnetic valves 8 are closed, and the flow rate of the compressed air measured by the flow meter 24 is obtained. Similarly, the flow rate is measured each time the electromagnetic valves 8 are sequentially opened, and finally, the flow rate of the compressed air is measured by the flow meter 24 with all of the solenoid valves No. 1 to No. 8 being opened.

これにより、図4に示すように、各電磁弁8を順次開くのに対応して流量が段階的に増加する測定データが得られるので、図3の場合と同様、各測定ごとに得られた前後の各圧縮空気の流量の差を個別に算出する。この各流量差が各エアーノズル7の空気噴射時の各流量に個別に対応していることになる。   As a result, as shown in FIG. 4, measurement data in which the flow rate increases stepwise corresponding to the opening of each solenoid valve 8 is obtained, so that the measurement data was obtained for each measurement as in FIG. 3. The difference between the flow rates of the compressed air before and after is calculated individually. Each flow rate difference individually corresponds to each flow rate at the time of air injection of each air nozzle 7.

また、図3および図4に示した例では、最初に全てのエアーノズル回路19の電磁弁8を全て開放、あるいは全て閉鎖した状態から、各電磁弁8を一つずつ順次段階的に開放あるいは閉鎖していくとともに、その都度、流量計24で圧縮空気の流量を測定するようにしているが、これに限らず、例えば、図5や図6に示すように、特定の個数の電磁弁8を常時閉じた状態にしておき、その状態で残りの電磁弁8を順次開放あるいは閉鎖することで、各エアーノズル7の空気噴射時の流量を算出することもできる。   In the example shown in FIGS. 3 and 4, the solenoid valves 8 of all the air nozzle circuits 19 are first opened or closed, and then the solenoid valves 8 are opened one by one in sequence. The flow rate of the compressed air is measured with the flow meter 24 each time it is closed. However, the present invention is not limited to this. For example, as shown in FIGS. Are always closed, and the remaining solenoid valves 8 are sequentially opened or closed in this state, whereby the flow rate of each air nozzle 7 during air injection can be calculated.

すなわち、図5に示す場合は、例えば、電磁弁8の数が全部で8個(番号No1〜No8)あるとすれば、第1の処理ステップでは、No5〜No8までの電磁弁8を常時閉じた状態にしておき、残りのNo1〜No4の電磁弁8を全て開いた状態にして流量計24で圧縮空気の流量を測定する。次に、No1の電磁弁8を閉じた状態にして流量計24で圧縮空気の流量を測定する。続いて、No1とNo2の電磁弁8を閉じた状態にして流量計24で圧縮空気の流量を測定する。以下、同様にして順次電磁弁8を閉じるたびにその都度流量を測定する。   That is, in the case shown in FIG. 5, for example, if there are a total of eight solenoid valves 8 (No. 1 to No. 8), the solenoid valves 8 to No. 5 to No. 8 are always closed in the first processing step. The flow rate of the compressed air is measured with the flow meter 24 with all the remaining No. 1 to No. 4 solenoid valves 8 open. Next, the flow rate of the compressed air is measured by the flow meter 24 with the No. 1 electromagnetic valve 8 closed. Subsequently, the flow rate of the compressed air is measured by the flow meter 24 with the No1 and No2 electromagnetic valves 8 being closed. Thereafter, the flow rate is measured each time the solenoid valve 8 is sequentially closed in the same manner.

次の第2の処理ステップでは、No1〜No4までの電磁弁8を常時閉じた状態にしておき、残のNo5〜No8の電磁弁8を全て開いた状態にして流量計24で圧縮空気の流量を測定する。次に、No5の電磁弁8を閉じた状態にして流量計24で圧縮空気の流量を測定する。続いて、No5とNo6の電磁弁8を閉じた状態にして流量計24で圧縮空気の流量を測定する。以下、同様にして順次電磁弁8を閉じるたびにその都度流量を測定する。   In the next second processing step, the solenoid valves 8 from No. 1 to No. 4 are always closed, the remaining solenoid valves 8 from No. 5 to No. 8 are all opened, and the flow rate of the compressed air is measured by the flow meter 24. Measure. Next, the flow rate of the compressed air is measured by the flow meter 24 with the No. 5 electromagnetic valve 8 closed. Subsequently, the flow rate of the compressed air is measured by the flow meter 24 with the No. 5 and No. 6 solenoid valves 8 being closed. Thereafter, the flow rate is measured each time the solenoid valve 8 is sequentially closed in the same manner.

この場合も、第1、第2の処理ステップにおいて、各電磁弁8を順次閉じるのに対応して流量が段階的に減少する測定データが得られるので、各測定ごとに得られた前後の各圧縮空気の流量の差を個別に算出することで、No1〜No8の各エアーノズル7の空気噴射時の各流量を個別に測定することができる。   Also in this case, in the first and second processing steps, measurement data in which the flow rate decreases stepwise corresponding to the sequential closing of the solenoid valves 8 is obtained. By individually calculating the difference in the flow rate of the compressed air, each flow rate at the time of air injection of each of the air nozzles No. 1 to No. 8 can be individually measured.

また、図6に示す場合は、例えば、電磁弁8の数が全部で8個(番号No1〜No8)あるとすれば、第1の処理ステップでは、No5〜No8までの電磁弁8を常時閉じた状態にしておき、残りのNo1〜No4の電磁弁8も閉じた状態にして流量計24で圧縮空気の流量を測定する。次に、No1の電磁弁8を開いた状態にして流量計24で圧縮空気の流量を測定する。続いて、No1とNo2の電磁弁8を開いた状態にして流量計24で圧縮空気の流量を測定する。以下、同様にして順次電磁弁8を開くたびにその都度流量を測定する。   In the case shown in FIG. 6, for example, if there are a total of eight solenoid valves 8 (No. 1 to No. 8), the solenoid valves 8 from No. 5 to No. 8 are always closed in the first processing step. The remaining No. 1 to No. 4 solenoid valves 8 are also closed, and the flow rate of the compressed air is measured by the flow meter 24. Next, the flow rate of the compressed air is measured by the flow meter 24 with the No. 1 electromagnetic valve 8 opened. Subsequently, the flow rate of the compressed air is measured by the flow meter 24 with the No1 and No2 solenoid valves 8 being opened. Thereafter, the flow rate is measured each time the solenoid valve 8 is sequentially opened in the same manner.

次の第2の処理ステップでは、No1〜No4までの電磁弁8を常時閉じた状態にしておき、残りのNo5〜No8の電磁弁8も閉じた状態にして流量計24で圧縮空気の流量を測定する。次に、No5の電磁弁8を開いた状態にして流量計24で圧縮空気の流量を測定する。続いて、No5とNo6の電磁弁8を開いた状態にして流量計24で圧縮空気の流量を測定する。以下、同様にして順次電磁弁8を開くたびにその都度流量を測定する。   In the next second processing step, the solenoid valves 8 from No. 1 to No. 4 are always closed, the remaining solenoid valves 8 from No. 5 to No. 8 are also closed, and the flow rate of the compressed air is measured by the flow meter 24. taking measurement. Next, the flow rate of the compressed air is measured by the flow meter 24 with the No. 5 solenoid valve 8 opened. Subsequently, the flow rate of the compressed air is measured by the flowmeter 24 with the No5 and No6 solenoid valves 8 being opened. Thereafter, the flow rate is measured each time the solenoid valve 8 is sequentially opened in the same manner.

この場合も、第1、第2の各処理ステップにおいて、各電磁弁8を順次開くのに対応して流量が段階的に増加する測定データが得られるので、各測定ごとに得られた前後の各圧縮空気の流量の差を個別に算出することで、No1〜No8の各エアーノズル7の空気噴射時の各流量を個別に測定することができる。   Also in this case, in each of the first and second processing steps, measurement data in which the flow rate is increased stepwise corresponding to the opening of the electromagnetic valves 8 in sequence is obtained. By calculating the difference in the flow rate of each compressed air individually, each flow rate at the time of air injection of each of the No1 to No8 air nozzles 7 can be measured individually.

以上のように、この実施の形態1では、複数のエアーノズル7が設けられる場合でも、各エアーノズル7の流量を測定する流量計24は1台で賄うことができる。このため、各エアーノズル7ごとに流量測定の過渡応答特性の校正や流量測定値の校正をする必要が無く、従来に比べてエアーノズル7の維持管理の手間を軽減することができる。しかも、検出応答時間が早い高価な流量計24を使用しても、各エアーノズル7ごとに個別に流量計24を設置する必要が無く、各エアーノズル7の流量を測定するために必要とする流量計24の数が1台で済むので、装置製作の価格上昇を抑制することができる。   As described above, in the first embodiment, even when a plurality of air nozzles 7 are provided, a single flow meter 24 for measuring the flow rate of each air nozzle 7 can be provided. For this reason, it is not necessary to calibrate the transient response characteristic of the flow rate measurement or the flow rate measurement value for each air nozzle 7, and it is possible to reduce the maintenance work of the air nozzle 7 compared to the conventional case. Moreover, even if an expensive flow meter 24 with a fast detection response time is used, it is not necessary to install the flow meter 24 individually for each air nozzle 7 and is necessary for measuring the flow rate of each air nozzle 7. Since only one flow meter 24 is required, an increase in the cost of manufacturing the apparatus can be suppressed.

また、異物や汚染物質の蓄積によってエアーノズル7の噴射口の面積が次第に減少し、これに伴い、圧縮空気の噴射量も減少して所定量の圧縮空気を噴射できなくなっても、その異常状態が圧縮空気の噴射量の減少量として確実に測定できるので、エアーノズル7の異常や故障の検出精度の高い物体選別装置1を提供することが可能となる。   Further, even if the area of the injection port of the air nozzle 7 gradually decreases due to the accumulation of foreign matters and contaminants, the amount of compressed air injected also decreases, and even if a predetermined amount of compressed air cannot be injected, the abnormal state Can be reliably measured as the amount of decrease in the amount of compressed air jetted, so that it is possible to provide the object sorting apparatus 1 with high detection accuracy of an abnormality or failure of the air nozzle 7.

実施の形態2.
図7は本発明の実施の形態2における物体選別装置1を示す構成図、図8は同物体選別装置1の構成を示す側面図であり、図1および図2に示した実施の形態1と対応もしくは相当する構成部分には同一の符号を付す。
Embodiment 2. FIG.
FIG. 7 is a block diagram showing the object sorting apparatus 1 according to the second embodiment of the present invention, and FIG. 8 is a side view showing the structure of the object sorting apparatus 1, and the first embodiment shown in FIGS. Corresponding or corresponding components are given the same reference numerals.

この実施の形態2の特徴は、圧縮空気源22と分配供給容器21との間の流路を開閉する開閉弁23に並行に圧縮空気の流量を測定する流量計24が接続されている。   A feature of the second embodiment is that a flow meter 24 for measuring the flow rate of compressed air is connected in parallel to an on-off valve 23 that opens and closes a flow path between the compressed air source 22 and the distribution supply container 21.

また、流量算出手段25は、電磁弁駆動手段15により個々の電磁弁8を一つずつ開放して、その都度、上記流量計24で測定される圧縮空気の流量に基づいて上記各エアーノズル7の空気噴射時の各流量を個別に算出するように構成されている。   The flow rate calculation means 25 opens the individual electromagnetic valves 8 one by one by the electromagnetic valve driving means 15, and each air nozzle 7 is based on the flow rate of the compressed air measured by the flow meter 24 each time. Each flow rate at the time of air injection is calculated individually.

その他の構成は実施の形態1と同様である。また、選別収集物2と除去対象物3とが混在した選別対象物体4から除去対象物3のみを選別排除する場合の動作についても、実施の形態1の場合と同様であるから、ここでは詳しい説明は省略する。   Other configurations are the same as those of the first embodiment. Further, since the operation in the case of selecting and removing only the removal target 3 from the selection target object 4 in which the sorted collection 2 and the removal target 3 are mixed is the same as that in the first embodiment, it is detailed here. Description is omitted.

次に、流量測定手段26により各エアーノズル7の空気噴射時の流量を測定し、その測定結果に基づいて各エアーノズルの異常や故障の有無を判別する場合の動作について説明する。   Next, the operation when the flow rate measurement means 26 measures the flow rate of each air nozzle 7 during air injection and determines the presence or absence of abnormality or failure of each air nozzle based on the measurement result will be described.

なお、この実施の形態2の場合も、各エアーノズル7の空気噴射時の流量測定は、物体選別装置1が起動される前の運転準備期間中に行うこととするが、これに限らず、装置稼動中の任意の時間に、ベルトコンベア6による選別対象物体4の搬送を一時的に中断して流量測定を行いエアーノズル7の異常の有無を判別するようにしても良い。   In the case of the second embodiment as well, the flow rate measurement at the time of air injection of each air nozzle 7 is performed during the operation preparation period before the object sorting device 1 is activated. At any time during the operation of the apparatus, the conveyance of the selection target object 4 by the belt conveyor 6 may be temporarily interrupted to measure the flow rate to determine whether the air nozzle 7 is abnormal.

流量算出手段25は、電磁弁駆動手段15に指令を与え、先ず全てのエアーノズル回路19の電磁弁8が閉じた状態にする。この状態から流量算出手段25は、電磁弁駆動手段15に指令を与え、個々の電磁弁8を一つずつ開放して、その都度、流量計24で測定される圧縮空気の流量に基づいて上記各エアーノズル7の空気噴射時の各流量を個別に算出する。   The flow rate calculation means 25 gives a command to the electromagnetic valve driving means 15 and first makes the electromagnetic valves 8 of all the air nozzle circuits 19 closed. From this state, the flow rate calculation means 25 gives a command to the electromagnetic valve drive means 15 to open each electromagnetic valve 8 one by one, and each time based on the flow rate of the compressed air measured by the flow meter 24. Each flow rate at the time of air injection of each air nozzle 7 is calculated individually.

例えば、電磁弁8の数が全部で8個あるとした場合に、各電磁弁8にNo1〜No8までの番号を付すと、No1〜No8の全ての電磁弁8を閉じた状態にし、次に、No1の電磁弁8のみを開いた状態にして流量計24で圧縮空気の流量を測定する。次に、No2の電磁弁8のみを開いた状態にして流量計24で圧縮空気の流量を測定する。続いて、No3の電磁弁8のみを開いた状態にして流量計24で圧縮空気の流量を測定する。以下、同様に各電磁弁8を開くたびに順次流量を測定して、No1〜No8まで全部の電磁弁8についての流量測定を完了させる。   For example, assuming that the number of solenoid valves 8 is eight in total, if the numbers from No1 to No8 are assigned to the respective solenoid valves 8, all the solenoid valves 8 of No1 to No8 are closed, The flow rate of the compressed air is measured by the flow meter 24 with only the No. 1 electromagnetic valve 8 opened. Next, the flow rate of the compressed air is measured by the flow meter 24 with only the No. 2 solenoid valve 8 opened. Subsequently, the flow rate of the compressed air is measured by the flow meter 24 with only the No. 3 solenoid valve 8 opened. Hereinafter, the flow rate is sequentially measured every time each solenoid valve 8 is opened, and the flow rate measurement for all the solenoid valves 8 from No1 to No8 is completed.

これにより、図9に示すように、個々の電磁弁8を一つずつ開くのに対応してエアーノズル7の空気噴射時の各流量が個別に得られることになる。   As a result, as shown in FIG. 9, each flow rate at the time of air injection of the air nozzle 7 is individually obtained in correspondence with opening each individual electromagnetic valve 8 one by one.

そして、報知手段27は、流量測定手段26で測定される上記各エアーノズル7の空気噴射時の各流量を予め設定された基準値と比較し、測定された流量が基準値以下の場合には、エアーノズル7の異常あるいは故障であると判定し、その結果を外部に報知する。これにより、異常と判定されたエアーノズル7の保守管理を実施することができる。   And the alerting | reporting means 27 compares each flow volume at the time of the air injection of each said air nozzle 7 measured by the flow volume measuring means 26 with the preset reference value, and when the measured flow volume is below a reference value, Then, it is determined that the air nozzle 7 is abnormal or out of order, and the result is notified to the outside. Thereby, maintenance management of the air nozzle 7 determined to be abnormal can be performed.

なお、図9に示した例では、No1〜No8の各電磁弁8の番号順に個々の電磁弁8を一つずつ開いていって、その都度、流量計24で圧縮空気の流量を測定するようにしているが、このように各電磁弁8の番号順に流量を測定する場合に限らず、図10に示すように、予め設定した順番に従って、例えばNo1→No4→No7→…というように、全てのエアーノズル7についての流量測定が終了するまで測定を実施すことも可能である。   In the example shown in FIG. 9, the individual solenoid valves 8 are opened one by one in the order of the numbers of the solenoid valves 8 of No 1 to No 8, and the flow rate of the compressed air is measured by the flow meter 24 each time. However, it is not limited to the case where the flow rate is measured in the order of the numbers of the respective electromagnetic valves 8 as described above, and as shown in FIG. 10, in accordance with a preset order, for example, all of No1 → No4 → No7 →. It is also possible to carry out the measurement until the flow measurement for the air nozzle 7 is completed.

以上のように、この実施の形態2においても、複数のエアーノズル7が設けられる場合でも、各エアーノズル7の流量を測定する流量計24は1台で賄うことができるので、実施の形態1と同様、従来に比べてエアーノズル7の維持管理の手間を軽減できるとともに、装置製作の価格上昇を抑制することができる。   As described above, also in the second embodiment, even when a plurality of air nozzles 7 are provided, the flow meter 24 for measuring the flow rate of each air nozzle 7 can be covered by a single unit. Similarly to the conventional case, it is possible to reduce the maintenance work of the air nozzle 7 as compared with the conventional case, and it is possible to suppress an increase in the price of manufacturing the device.

さらに、この実施の形態2では、圧縮空気源22と分配供給容器21との間の流路を開閉する開閉弁23に並行に流量計24を接続した構成であるため、開閉弁23を経由するために必要な大口径の流量計24に比べて、小口径で安価な流量計24の使用が可能になるとともに、各エアーノズル回路19に流れる圧縮空気の流量の測定の分解能を高めることができる。これにより、エアーノズル7の異常や故障の検出精度をさらに一層高めることが可能となる。   Further, in the second embodiment, since the flow meter 24 is connected in parallel to the on-off valve 23 that opens and closes the flow path between the compressed air source 22 and the distribution supply container 21, it passes through the on-off valve 23. Compared to the large-diameter flow meter 24 required for this purpose, the small-diameter and inexpensive flow meter 24 can be used, and the resolution of the measurement of the flow rate of the compressed air flowing through each air nozzle circuit 19 can be increased. . Thereby, it becomes possible to further improve the accuracy of detecting an abnormality or failure of the air nozzle 7.

なお、上記の実施の形態1において、流量算出手段25は、電磁弁駆動手段15により各電磁弁8を順次段階的に開放または閉鎖していった場合の流量計24で測定される圧縮空気の流量変化の差に基づいて各エアーノズル7の空気噴射時の各流量を個別に算出しているが、この方法を実施の形態2に適用することも可能である。また、実施の形態2において、流量算出手段25は、電磁弁駆動手段15により個々の電磁弁8を一つずつ開放して、その都度、流量計24で測定される圧縮空気の流量に基づいて上記各エアーノズル7の空気噴射時の各流量を個別に算出しているが、この方法を実施の形態1に適用することも可能である。   In the first embodiment described above, the flow rate calculation means 25 uses the compressed air measured by the flowmeter 24 when the electromagnetic valve driving means 15 opens or closes each electromagnetic valve 8 stepwise. Although each flow rate at the time of air injection of each air nozzle 7 is calculated individually based on the difference in flow rate change, this method can also be applied to the second embodiment. Further, in the second embodiment, the flow rate calculation means 25 opens the individual electromagnetic valves 8 one by one by the electromagnetic valve driving means 15, and each time based on the flow rate of the compressed air measured by the flow meter 24. Although each flow rate at the time of air injection of each air nozzle 7 is calculated individually, this method can also be applied to the first embodiment.

1 物体選別装置、2 選別収集物、3 除去対象物、 4 選別対象物体、
6 ベルトコンベア(搬送手段)、7 エアーノズル、8 電磁弁、10 識別手段、
15 電磁弁駆動手段、21 分配供給容器、22 圧縮空気源、23 開閉弁、
24 流量計、25 流量算出手段、26 流量測定手段、27 報知手段。
1 Object sorting device 2 Sorted collection 3 Object to be removed 4 Object to be sorted
6 belt conveyor (conveyance means), 7 air nozzle, 8 solenoid valve, 10 identification means,
15 solenoid valve drive means, 21 distribution supply container, 22 compressed air source, 23 on-off valve,
24 flow meter, 25 flow rate calculating means, 26 flow rate measuring means, 27 informing means.

Claims (3)

搬送手段により搬送される選別収集物と除去対象物とが混在した選別対象物体を識別手段で識別し、その識別結果に基づいて上記搬送手段の搬送経路に向けて配置された複数のエアーノズルに個別に接続された各電磁弁を電磁弁駆動手段により間欠的に開閉制御し、上記各エアーノズルから噴射される圧縮空気により移送軌道を変更して除去対象物を除去する物体選別装置において、
上記各エアーノズルの空気噴射時の流量を測定する流量測定手段を備え、この流量測定手段は、圧縮空気源とこの圧縮空気源からの圧縮空気を上記各電磁弁に分配供給する分配供給容器との間を接続する開閉弁に対して、直列または並列に流量計が接続されるとともに、上記電磁弁駆動手段により上記各電磁弁を順次段階的に開放または閉鎖していった場合の、上記流量計で測定される圧縮空気の流量変化の差に基づいて上記各エアーノズルの空気噴射時の各流量を個別に算出する流量算出手段を備える、ことを特徴とする物体選別装置。
The discrimination target object in which the selection collection object and the removal target object which are conveyed by the conveyance means are mixed is identified by the identification means, and a plurality of air nozzles arranged toward the conveyance path of the conveyance means based on the identification result In the object sorting device that removes the object to be removed by intermittently controlling the opening and closing of each individually connected solenoid valve by the solenoid valve driving means, changing the transfer trajectory by the compressed air ejected from each air nozzle,
A flow rate measuring means for measuring a flow rate at the time of air injection of each air nozzle, the flow rate measuring means; a distribution supply container for distributing and supplying compressed air from the compressed air source to the electromagnetic valves; The flow rate when a flow meter is connected in series or in parallel to the on-off valve that connects between them, and the electromagnetic valves are sequentially opened or closed by the electromagnetic valve driving means stepwise. An object sorting apparatus comprising: a flow rate calculating unit that individually calculates each flow rate at the time of air injection of each air nozzle based on a difference in flow rate change of compressed air measured by a meter.
上記流量算出手段は、上記電磁弁駆動手段により各電磁弁を順次段階的に開放または閉鎖していった場合の、上記流量計で測定される圧縮空気の流量変化の差に基づいて上記各エアーノズルの空気噴射時の各流量を個別に算出する代わりに、上記電磁弁駆動手段により個々の電磁弁を一つずつ開放して、その都度、上記流量計で測定される圧縮空気の流量に基づいて上記各エアーノズルの空気噴射時の各流量を個別に算出するものである、ことを特徴とする請求項1に記載の物体選別装置。 The flow rate calculation means is configured to change the air flow based on a difference in flow rate change of the compressed air measured by the flow meter when each electromagnetic valve is opened or closed sequentially by the electromagnetic valve driving means. Instead of calculating each flow rate at the time of air injection from the nozzle individually, each electromagnetic valve is opened one by one by the electromagnetic valve driving means, and each time based on the flow rate of compressed air measured by the flow meter. The object sorting device according to claim 1, wherein each flow rate at the time of air injection of each air nozzle is individually calculated. 上記流量測定手段で測定される上記各エアーノズルの空気噴射時の各流量を予め設定された基準値と比較し、測定された流量が基準値以下の場合には、上記エアーノズルの異常であると判定してその結果を外部に報知する報知手段を備えることを特徴とする請求項1または請求項2に記載の物体選別装置。 Each flow rate at the time of air injection of each air nozzle measured by the flow rate measuring means is compared with a preset reference value, and if the measured flow rate is less than the reference value, the air nozzle is abnormal. The object selection apparatus according to claim 1, further comprising a notification unit that determines that the result is determined and notifies the result to the outside.
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WO2024038735A1 (en) * 2022-08-16 2024-02-22 株式会社システムスクエア Inspection sorting device and sorting device

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