WO2022224478A1 - 電気電子部品屑の処理方法及び電気電子部品屑の処理装置 - Google Patents
電気電子部品屑の処理方法及び電気電子部品屑の処理装置 Download PDFInfo
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- WO2022224478A1 WO2022224478A1 PCT/JP2021/043016 JP2021043016W WO2022224478A1 WO 2022224478 A1 WO2022224478 A1 WO 2022224478A1 JP 2021043016 W JP2021043016 W JP 2021043016W WO 2022224478 A1 WO2022224478 A1 WO 2022224478A1
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- electronic component
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Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
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- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/34—Sorting according to other particular properties
- B07C5/342—Sorting according to other particular properties according to optical properties, e.g. colour
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Definitions
- the present invention relates to a method for processing scrap electrical and electronic components and a processing apparatus for scrap electrical and electronic components.
- Patent Document 1 For example, in Japanese Patent Application Laid-Open No. 9-78151 (Patent Document 1), scraps containing valuable metals are charged from the ceiling into a flash smelting furnace for copper ore smelting, and the valuable metals are transferred to the mat that stays in the furnace. A method for recycling valuable metals that includes a step of recovering is described.
- Patent Document 2 As a method for recovering valuable metals from recycled raw materials containing aluminum, recycled raw materials are charged into a melting furnace in a copper smelting process, and aluminum is oxidized to form a molten slag layer. A method for treating recycled raw materials is described in which the valuable metals are removed from the system by making them into components, the valuable metals are dissolved in the metal layer or the mat layer, and the dissolved valuable metals are recovered.
- processing raw materials such as copper wire scraps containing valuable metals that can be processed in the smelting process (hereinafter referred to as “smelting raw materials”) and raw materials that may impair the treatment stability of the smelting process and should be sent outside the smelting process (hereinafter referred to as “external raw materials”).
- smelting raw materials copper wire scraps containing valuable metals that can be processed in the smelting process
- external raw materials raw materials that may impair the treatment stability of the smelting process and should be sent outside the smelting process
- electrical and electronic component scrap is a mixture of various components and has various compositions and shapes, so there is a problem that it is difficult to accurately identify individual electrical and electronic component scrap by image recognition.
- erroneous detection occurs frequently due to its nature, so it is necessary to determine the optimum value of the score threshold in consideration of the balance with erroneous detection.
- the present disclosure uses an image recognition processing technology and a sorting device to provide a method for processing electrical and electronic component scraps that can more efficiently sort out desired component scraps from electrical and electronic component scraps, and electrical and electronic component scraps. is provided.
- the method for processing scrap electrical and electronic components includes a sorting condition determination step of determining a sorting condition for scrap electrical and electronic components, and the step includes a step of determining a sorting condition for the scrap electrical and electronic components.
- a score representing the likelihood of the identified component waste, the detection area of the component waste, and information on the number of the component waste are identified by image recognition processing from among a plurality of captured images of the waste.
- Classification information that classifies the number of identified scrap parts based on the relationship between the score and the detection area of the scrap parts using the image recognition processing step of acquiring the image recognition information including the image recognition information of the plurality of captured images and a condition determination step of determining a score threshold for image recognition processing and a detection area threshold for scrap parts based on the classification information and processing capacity information of a sorting device for sorting scrap parts. It is a processing method of electronic component waste.
- an imaging step of imaging electrical and electronic component scrap including a plurality of component scraps; Image recognition that identifies scrap parts belonging to a specific kind of parts by image recognition processing, and obtains image recognition information including at least information on a score indicating the likelihood of the identified scrap parts, a detection area of the scrap parts, and the number of the scrap parts.
- a method for processing scrap electrical and electronic components comprising a ranking step and a sorting step of sorting scrap parts using a sorting device based on the order of priority.
- an electric/electronic component waste processing apparatus includes a conveying device that conveys electric/electronic component waste, and an image of the electric/electronic component waste conveyed by the conveying device to obtain a captured image.
- An imaging device, an image recognition processing device that identifies a plurality of scrap parts belonging to a specific component type from the captured image captured by the imaging device by image recognition processing, and a plurality of scrap parts identified by the image recognition processing device are sorted out.
- the sorting device that performs the classification, and the classification information obtained by classifying the number of scrap parts identified by the image recognition process based on the relationship between the score and the detection area of the scrap parts is acquired, and the classification information and the processing capacity information of the sorting device are acquired. and a condition control device for determining a score threshold value for image recognition processing and a detection area threshold value for scrap parts to be sorted by a sorting device based on the above.
- an electric/electronic component scrap processing method and an electric/electronic component scrap capable of more efficiently sorting out desired component scrap from electrical/electronic component scrap using image recognition processing technology and a sorting device. of processing equipment can be provided.
- FIG. 5 is a flow chart showing an example of a processing flow of a sorting condition determination step in FIG. 4; FIG. FIG.
- FIG. 6 is a flow chart showing an example of a processing flow of a threshold value determination step in FIG. 5;
- FIG. BRIEF DESCRIPTION OF THE DRAWINGS It is a flowchart which shows an example of the whole flow including the smelting process of the waste electrical/electronic components which concerns on embodiment of this invention.
- the processing apparatus for the electrical/electronic component waste 1 includes an imaging device 12 for imaging the electrical/electronic component waste 1 and a sorting device 13 for sorting the electrical/electronic component waste 1. , an imaging device 12 and a condition control device 10 for controlling the processing conditions of the sorting device 13 .
- the electrical/electronic component scrap 1 can be scraps obtained by crushing electronic/electrical equipment such as waste home appliances/PCs and mobile phones.
- the crushing to obtain the electrical and electronic component scrap 1 may be performed by the processor himself or may be purchased after being crushed in the market.
- the crushing method is not limited to a specific device, and may be a shear method or an impact method, but crushing that does not damage the shape of the parts as much as possible is desirable. Therefore, it does not include equipment belonging to the category of grinders whose purpose is to grind finely.
- the electrical and electronic component scrap 1 consists of a plurality of types of components such as plastics (synthetic resins) used for substrates, housings, etc., metal pieces, copper wire scraps, capacitors, IC chips, and others. , can be further subdivided. In a typical example, it is preferable to selectively sort out at least one of copper wire scraps, metal scraps, capacitors, plastic scraps, and circuit board scraps as specific component types from the electrical and electronic component scrap 1 .
- the lower limit is not particularly limited, it is 5 mm or more, more typically 10 mm or more, and further 15 mm or more.
- the “representative diameter” is the average value obtained by extracting arbitrary 100 points from the electrical and electronic component scrap 1, calculating the average value of the major axis of the extracted electrical and electronic component scrap 1, and repeating this five times. show.
- the electric/electronic component scrap 1 is conveyed by a conveying device 3 such as a belt conveyor, imaged by an imaging device 12, and subjected to a predetermined sorting process by a sorting device 13.
- a conveying device 3 such as a belt conveyor
- the electrical and electronic component waste 1 supplied to the conveying device 3 is to prevent the electrical and electronic component waste 1 from overlapping each other and to facilitate the sorting process by the sorting device 13.
- imaging devices such as an RGB camera and a multispectral imaging device can be used as the imaging device 12, for example. It is preferable to use a multispectral imaging device that more accurately detects the color of the component waste for imaging the electrical and electronic component waste 1 including component waste having gloss that is difficult to distinguish with the naked eye.
- the sorting device 13 is not limited to the configuration shown in FIG. 1, and various sorting devices can be used. Among them, as the sorting device 13 suitable for selectively extracting specific scrap parts, it is preferable to use a picking robot having a robot hand for gripping the scrap parts at its tip. By the picking robot, the collected electric/electronic component scrap 1 can be conveyed to a conveying device 4 such as a belt conveyor that conveys in a direction different from that of the conveying device 3, and can be smoothly conveyed to the next process.
- a conveying device 4 such as a belt conveyor that conveys in a direction different from that of the conveying device 3, and can be smoothly conveyed to the next process.
- the condition control device 10 is connected to an imaging device 12, a sorting device 13, an image recognition processing device 11, and a storage device 14, as shown in FIG.
- the image recognition processing device 11 may be stored in one processing device together with the condition control device 10, or may be connected to the outside of the processing device including the condition control device 10 via a network (not shown). configuration.
- the storage device 14 stores an operation program for operating the image recognition processing device 11 and the condition control device 10 according to a predetermined control algorithm, an image captured by the imaging device 12, learning data for image recognition processing, and an input device (not shown).
- it is a device that stores various information input via a network (not shown), processing conditions that are created and output by the condition control device 10, and the like, and can be composed of a memory or the like.
- a display device for displaying various information to the operator may be further provided.
- the image recognition processing device 11 is composed of an artificial intelligence (AI) system that utilizes a machine learning system using learning data in order to be able to identify a plurality of scrap parts that make up the electrical and electronic scrap 1 for each part type. It is The image recognition processing device 11 performs image recognition processing using AI on a captured image of the electrical/electronic component waste 1, and identifies components belonging to a specific component type from the electrical/electronic component waste 1 in the captured image. Waste identification processing is performed. General analysis tools suitable for image recognition processing such as deep learning can be appropriately used for machine learning using AI.
- AI artificial intelligence
- the condition control device 10 extracts the identification (inference) results of the multiple captured images output from the image recognition processing device 11 .
- the condition control device 10 includes at least a score indicating the probability of the identified scrap parts, the number of scrap parts, and the detection area of the scrap parts from among the identification results of the plurality of captured images identified by the image recognition processing device 11. Get image recognition information.
- the condition control device 10 extracts a plurality of pieces of image recognition information whose inference results satisfy a predetermined standard from among the identification results of the acquired plurality of captured images, adds them together, and determines the identified parts scrap. The number is classified based on the relationship between the score and the detection area of the scrap parts.
- condition control device 10 divides the scores obtained for the image recognition information whose inference result satisfies the criteria into a plurality of set ranges, and for each set range, the number of identified scrap parts is counted as detection of the scrap parts.
- Acquire classification information classified by area (see FIG. 4).
- the classification information can also be created manually by an operator using spreadsheet software or the like.
- the classification information is stored in storage device 14 .
- the condition control device 10 determines the score threshold applied to the image recognition processing by the image recognition processing device 11 and the detection of scrap parts to be sorted by the sorting device 13. Determine the area threshold.
- the processing capacity information of the sorting device 13 includes various information necessary for the sorting process of scrap parts, including the number of sorting devices 13, processing speed, operation or stop information, and the like. Typically, it refers to information including the number of scrap parts that can be extracted by the sorting device 13 per unit time.
- the processing conditions determined by the condition control device 10 are output to the imaging device 12 and the sorting device 13 .
- the sorting device 13 When the electrical/electronic component waste 1 is supplied to the conveying device 3 of FIG. is identified, and the sorting device 13 performs the sorting process so as to convey the scrap parts whose area is equal to or larger than the detection area threshold of the scrap parts to be sorted to the sorting device 13 side.
- the storage device 14 stores an operation program for operating the image recognition processing device 11 and the condition control device 10 according to a predetermined control algorithm, an image captured by the imaging device 12, learning data for image recognition processing, and an input device (not shown).
- it is a device that stores various information input via a network (not shown), processing conditions that are created and output by the condition control device 10, and the like, and can be composed of a memory or the like.
- a display device for displaying various information to the operator may be further provided.
- the condition control device 10 sets a score threshold suitable for image recognition processing using AI according to the sorting processing capability of the sorting device 13. Therefore, it is possible to suppress the omission of sorting of scrap parts due to the excess or deficiency of the sorting processing capacity, so that it is possible to sort out the desired scrap parts from the scrap electrical and electronic parts 1 more efficiently.
- the electrical and electronic scrap scraps to be conveyed to the conveying device 3 A step of adjusting the throughput so as to increase the throughput of 1 is provided. As a result, it is possible to increase the processing amount of the electrical/electronic component waste 1 in accordance with the sorting capacity of the sorting device 13, so that the efficiency of the processing process can be improved.
- step S10 the apparatus for processing scrap electrical and electronic components 1 according to the embodiment of the present invention determines sorting conditions for sorting (sorting condition determination step). The details of the sorting condition determination step S10 will be described later.
- step S20 the image capturing device 12 captures an image of the electrical/electronic component waste 1 transported into the image capturing area by the transport device 3 to obtain a captured image (image capturing step).
- step S30 the image recognition processing device 11 identifies a plurality of component scraps belonging to a specific component type from the captured image of the electric/electronic component scrap 1 by image recognition processing using AI.
- the image recognition processing device 11 acquires image recognition information including information such as the score of the identified scrap, the detection area of the scrap, the number of the scrap, and the detection position (coordinates) (image recognition processing step).
- the area along the outer edge of the scrap parts may be measured.
- Various shapes such as a circle, an ellipse, a rectangle, and a polygon can be used as the circumscribed figure.
- step S40 the condition control device 10 narrows down, from the image recognition information, scrap parts exceeding a score threshold and a detection area threshold for the scrap parts preset for the identified scrap parts (narrowing process).
- step S50 the condition control device 10 prioritizes the narrowed-down scrap parts (prioritization process).
- the conditions for prioritization can be appropriately set by the operator according to the features of the sorting device 13 . For example, priority can be given in descending order of detection area of scrap parts. Alternatively, the sorting device 13 may give priority to scrap parts having a shape that facilitates the sorting process.
- the processing amount of the scrap electrical and electronic parts 1 is increased. may further include a throughput adjustment step of adjusting the throughput.
- the sorting device 13 preferentially sorts the scrap parts prioritized in step S50. Each process of steps S10 to S60 is performed for each part type of the electrical/electronic component scrap 1 to be sorted.
- step S11 a plurality of captured images of electrical and electronic component waste including target component waste are acquired (captured image acquisition step).
- step S12 the image recognition processing device 11 identifies parts scrap belonging to a specific part type from among the plurality of captured images obtained by image recognition processing, and expresses the likelihood of the identified parts scrap as an inference result.
- Image recognition information including information on the score, detection area of scrap parts, and the number of scrap parts is acquired (image recognition processing step).
- step S13 the condition control device 10 sums up the image recognition information of a plurality of captured images, and classifies the number of identified scrap parts based on the relationship between the score and the detection area of the scrap parts (see FIG. 3). ) (classification step).
- step S14 based on the classification information obtained in step S13 and the processing capacity information of the sorting device 13 for sorting out parts scrap, the score threshold for image recognition processing for sorting out parts scrap and detection of parts scrap Determine the area threshold (condition determination step).
- step S41 of FIG. 6 the condition control device 10 acquires sorting capacity information and sorting information of the sorting device 13.
- sorting processing capability information for example, information on the number of scrap parts that can be sorted per unit time by using the sorting device 13 from among the scrap electrical and electronic parts 1 captured in one captured image is acquired.
- classification information for example, classification information as shown in FIG. 3 is acquired.
- FIG. 3 shows an example of classification result information by image recognition processing using AI when copper wire scrap is selected as a component type from electrical and electronic component scrap 1.
- the score representing the likelihood of the identified scrap parts is divided into a plurality of set ranges (horizontal axis), and each set range contains information in which the number of identified scrap parts is classified (vertical axis) for each detection area of the scrap parts.
- step S42 the condition control device 10 selects the first category, which is the setting range with the highest score among the category information and the category with the largest detection area.
- the first category 100 which has the highest score (0.20 or more) and the largest detection area (40 kpx or more) among the classification information is selected.
- step S43 the condition control device 10 determines whether or not the number of scrap parts in the first section 100 is less than the number of scrap parts that can be sorted by the sorting device 13. If the number of scrap parts that can be sorted by the sorting device 13 is less than the number of scrap parts in the first section 100, the condition determination process is terminated. When the number of scrap parts that can be sorted by the sorting device 13 is greater than or equal to the number of scrap parts in the first section 100, the process proceeds to step S44.
- step S44 another section adjacent to the first section 100 is selected from the classification information.
- a second section 101 that belongs to the same score as the first section 100 and has a detection area smaller than that of the first section 100, and a second section 101 that has a smaller score than the first section 100 but has a detection area Select the same third partition 102 .
- the storage device 14 stores information on the weight ratio of the target collected material preset for each part type.
- the classification information of FIG. 3 represents an example of the classification information of scrap copper wire.
- the condition control device 10 selects the object to be sorted by the sorting device 13 based on the relationship between the weight ratio of copper, which is the target recovery material in the copper wire scrap, the number of the second section 101 and the third section 102, and the detection area.
- the score threshold and the detection area threshold are optimized so that the total weight of the desired collected material contained in the scrap parts is the maximum weight.
- the score threshold is set to 0.08 or more and the detection area threshold is set to 40 kpx or more in order to properly sort out the copper wire scrap. preferably.
- FIG. 7 shows an example of a method for processing electrical and electronic component waste according to an embodiment of the present invention.
- the method for processing electrical and electronic component scraps according to the embodiment of the present invention comprises a step of processing electrical and electronic component scraps 1 by at least two stages of air sorting steps (S2, S4), and a metal sorting step (S6) using a metal sorter. ) to sort out the substrate scraps.
- wind sorting is performed in two stages (S2, S4), so that magnetic sorting is performed in the initial stage.
- S2, S4 wind sorting is performed in two stages
- the electrical and electronic component scrap 1 that is input as a raw material is subjected to the pre-selection step (S1) in a state in which a certain size and shape are maintained (for example, a particle size of about 10 to 70 mm) without being crushed or crushed. conduct.
- a certain size and shape for example, a particle size of about 10 to 70 mm
- the electrical and electronic component scrap 1 can be easily handled as a raw material, transported easily, and can be processed as a whole. Efficiency can also be increased.
- the electrical and electronic component scrap 1 includes bulk copper wire scrap, powder, film, linear copper wire scrap, board scrap, metal pieces, copper wire scrap, It can be classified into capacitors, IC chips, iron scraps (Fe), aluminum (Al) scraps, stainless steel (SUS) scraps, synthetic resins including rubbers and casings, and other scraps.
- scrap parts containing 90% or more by weight of the substance to be classified in one part scrap is referred to as "single scrap" in this embodiment, and a single scrap in which a plurality of substances are mixed. Waste other than waste is called “composite waste”.
- the electrical and electronic component scrap 1 contains 60% or more, and further 70% or more of the single scrap is used as the raw material to be processed in the pre-sorting step S1, so that the smelting inhibitor is removed from the system. It is possible to efficiently and accurately sort scrap parts containing the target valuables while removing them.
- the method for processing electrical and electronic component scraps comprises a pre-sorting step (S1) for removing lumped copper wire scraps from electrical and electronic component scraps 1; A step of air sorting (S2) in which the later electrical and electronic component scrap 1 is sorted by wind to remove powdery materials and film-like scraps by moving them to the side of light materials, and the heavy items obtained by the wind sorting are sieved, A sieving step (S3) for removing shaped (long) copper wire scraps, a second-stage wind sorting step (S4), and a color sorter from the electrical and electronic component scraps 1 after removing the linear copper wire scraps.
- S1 pre-sorting step
- S2 step of air sorting
- S3 for removing shaped (long) copper wire scraps
- S4 second-stage wind sorting step
- a color sorter from the electrical and electronic component scraps 1 after removing the linear copper wire scraps.
- a sieving step (S3) between the first-stage wind sorting step (S2) and the second-stage wind sorting step (S4), wire scraps contained in the electrical and electronic component scrap 1 are removed. can be done.
- the sieving step (S3) it is preferable to use a sieving machine having a slit-shaped sieve.
- the sieving can remove powdery matter in addition to wire scraps. The sifted powder and copper wire scraps are sent to the smelting process via the pre-incineration treatment process, so that the valuable metals in the parts scraps can be recovered more efficiently.
- the metal content ratio of the object to be processed sent to the metal sorting step (S6) can be reduced, so the metal sorting step ( The sorting efficiency in S6) can be made higher.
- Some of the heavy objects obtained in the second stage of the wind separation process (S4) may contain substrates that should be processed in the copper smelting process. Therefore, the image sorting process according to the present embodiment is combined with the sorting process such as magnetic force sorting, eddy current sorting, color sorter, manual sorting, robot sorting, etc. As a result, the substrate to be treated in the copper smelting process can be separated and sent to the smelting process, thereby increasing the recovery efficiency of valuable metals.
- the sorting process such as magnetic force sorting, eddy current sorting, color sorter, manual sorting, robot sorting, etc.
- the heavy items obtained in the second stage of the wind sorting process (S4) are sent to the magnetic sorting process (S8) after going through the pre-sorting process (S7) including the image recognition process using the AI described above.
- the magnetic separation step (S8) raw materials containing iron are removed from the heavy objects as raw materials outside the smelting process.
- an eddy current sorting step (S9) is performed, and a pre-sorting step (S91) is performed to remove scraps containing aluminum, synthetic resins (plastics), SUS, etc.
- the waste substrates are sent to the smelting process.
- the respective sorting steps (S1 to S91) it is also possible to combine the respective sorting steps (S1 to S91) as appropriate. Further, image recognition processing is further performed on raw materials selected as outside raw materials in the pre-selection step (S7), the magnetic force sorting step (S8), the eddy current sorting step (S9), and the pre-selection step (S91). It is also preferable to perform a sorting process of extracting objects using a sorting device 13 having a hand.
- the aluminum scraps extracted after the eddy current sorting step (S9) include component scraps with substrates containing valuables in the aluminum scraps.
- the method for treating scrap electrical and electronic components according to the embodiment of the present invention further includes a smelting step of smelting the raw materials containing valuable metals that have been sorted out in the sorting steps (S1 to S91).
- the smelting process includes, for example, a process of incinerating the electrical and electronic component waste 1, a process of crushing and sieving the incinerated material, and a process of copper smelting the crushed and sieved material.
- the process of incinerating the electrical and electronic component waste 1 may be omitted.
- any method can be selected for the process of crushing and sifting the electrical and electronic component waste 1 as long as it is a process of forming the electrical and electronic component waste 1 into a size suitable for the smelting process.
- a copper smelting process using a flash smelting furnace method can be suitably used as the smelting process according to the present embodiment.
- the copper concentrate, the solvent, and the electrical and electronic component waste 1 are charged from the ceiling of the shaft of the flash smelting furnace.
- the charged concentrate and scrap are melted in the shaft of the flash smelting furnace and separated in the settler of the flash smelting furnace into a matte containing, for example, 50-68% copper and slag floating above the matte.
- Valuable metals such as copper, gold, and silver in the electronic/electrical equipment parts are absorbed by the mat staying in the flash furnace, so that the valuable metals can be recovered from the electric/electronic parts scrap 1 .
- electrical and electronic component scraps 1 containing a large amount of valuable metals such as copper, gold and silver are processed as much as possible. It is important to put in and process.
- the electrical and electronic component scrap 1 contains substances that affect the quality of copper smelting products and by-products and/or smelting inhibitors that affect the copper smelting process. For example, when a large amount of material containing elements such as Sb and Ni is fed into a smelting furnace, the quality of electrolytic copper obtained by copper smelting may deteriorate.
- sulfuric acid is produced from sulfur dioxide generated by oxidation of concentrates, but if hydrocarbons are mixed with sulfur dioxide, the sulfuric acid produced may be colored.
- Sources of hydrocarbon contamination include, for example, synthetic resins such as plastics, and depending on the composition of the electrical and electronic component scrap 1 brought into the copper smelting process, a large amount of such synthetic resins may be included. Synthetic resins may cause rapid combustion in the smelting furnace, smoke leakage, and equipment deterioration due to localized heating.
- the proportion of smelting inhibitors brought into the smelting process is minimized, the amount of electrical and electronic component scrap 1 processed is increased, copper and valuable It becomes possible to efficiently recover copper and valuable metals by increasing the ratio of electrical and electronic component scrap 1 containing metals.
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Abstract
Description
本発明の実施の形態に係る電気電子部品屑1の処理装置は、図1に示すように、電気電子部品屑1を撮像する撮像装置12と、電気電子部品屑1を選別する選別装置13と、撮像装置12及び選別装置13の処理条件を制御する条件制御装置10を備える。
図4に示すフローチャートに基づいて、本発明の実施の形態に係る電気電子部品屑の処理方法の一例を説明する。ステップS10において、本発明の実施の形態に係る電気電子部品屑1の処理装置が、選別処理を行うための選別条件を決定する(選別条件決定工程)。選別条件決定工程S10の詳細は後述する。ステップS20において、撮像装置12が、搬送装置3により撮像エリア内に搬送された電気電子部品屑1を撮像し、撮像画像を取得する(撮像工程)。
図4のステップS10の選別条件決定工程の一例について図5及び6のフローチャート及び図3の分類情報の例を用いて説明する。なお、以下に示す処理は一例であり、選別条件決定工程は以下の例に限定されるものではない。
図6のステップS41において、条件制御装置10が、選別装置13の選別処理能力情報及び分類情報を取得する。選別処理能力情報としては、例えば一枚の撮像画像に撮像された電気電子部品屑1の中から選別装置13を用いて単位時間当たりに選別可能な部品屑の個数の情報を取得する。分類情報としては、例えば図3に示すような分類情報を取得する。
本発明の実施の形態に係る電気電子部品屑の処理方法の一例を図7に示す。本発明の実施の形態に係る電気電子部品屑の処理方法は、電気電子部品屑1を少なくとも2段階の風力選別工程(S2、S4)により処理する工程と、メタルソータを用いた金属選別工程(S6)により基板屑を選別する工程を少なくとも含む。
本発明の実施の形態に係る電気電子部品屑の処理方法は、各選別工程(S1~S91)でそれぞれ選別された有価金属を含む処理原料を製錬する製錬工程を更に有する。
3、4…搬送装置
10…条件制御装置
11…画像認識処理装置
12…撮像装置
13…選別装置
14…記憶装置
Claims (9)
- 電気電子部品屑の選別条件を決定する選別条件決定工程を備え、該工程が、
複数の部品屑を含む電気電子部品屑を撮像した複数の撮像画像の中から特定の部品種に属する部品屑を画像認識処理によって識別し、識別した部品屑の確からしさを表すスコア、前記部品屑の検知面積及び前記部品屑の個数の情報を含む画像認識情報を取得する画像認識処理工程と、
前記複数の撮像画像の前記画像認識情報を用いて、前記識別した部品屑の個数を前記スコアと前記部品屑の検知面積との関係に基づいて分類した分類情報を作製する分類工程と、
前記分類情報と、前記部品屑を選別する選別装置の処理能力情報とに基づいて、前記画像認識処理のスコア閾値及び前記部品屑の検知面積閾値を決定する条件決定工程と
を備えることを特徴とする電気電子部品屑の処理方法。 - 前記条件決定工程が、
前記選別装置が選別可能な前記部品屑の個数と前記分類情報とに基づいて、前記選別装置が選別対象とする前記部品屑に含まれる目的回収物の総重量が最大重量となるように、前記スコア閾値及び前記検知面積閾値を最適化することを特徴とする請求項1に記載の電気電子部品屑の処理方法。 - 前記スコア閾値を0.08以上、前記検知面積閾値を40kpx以上に設定することを含む請求項1又は2に記載の電気電子部品屑の処理方法。
- 前記検知面積が、前記部品屑と外接する外接図形の面積であることを含む請求項1~3のいずれか1項に記載の電気電子部品屑の処理方法。
- 前記選別装置が、ピッキングロボットを含むことを特徴とする請求項1~4のいずれか1項に記載の電気電子部品屑の処理方法。
- 複数の部品屑を含む電気電子部品屑を撮像する撮像工程と、
前記撮像工程で得られた撮像画像の中から特定の部品種に属する部品屑を画像認識処理によって識別し、識別した部品屑の確からしさを表すスコア、前記部品屑の検知面積及び前記部品屑の個数の情報を少なくとも含む画像認識情報を取得する画像認識処理工程と、
前記画像認識情報の中から、前記部品屑に対して予め設定されたスコア閾値及び前記部品屑の検知面積閾値を超える部品屑を絞り込む絞り込み工程と、
前記絞り込まれた前記部品屑に優先順位を付ける優先順位付け工程と、
前記優先順位に基づいて選別装置を用いて前記部品屑を選別する選別工程と
を備えることを特徴とする電気電子部品屑の処理方法。 - 前記撮像工程の前に、請求項1~5のいずれか1項に記載の前記選別条件決定工程を行い、前記スコア閾値及び前記検知面積閾値を決定することを含む請求項6に記載の電気電子部品屑の処理方法。
- 前記選別装置が選別可能な前記部品屑の個数が、前記検知面積閾値を満足する前記部品屑の個数よりも多い場合に、前記電気電子部品屑の処理量を増やすように、該処理量を調整する処理量調整工程を更に含むことを特徴とする請求項6又は7に記載の電気電子部品屑の処理方法。
- 電気電子部品屑を搬送する搬送装置と、
前記搬送装置により搬送される前記電気電子部品屑を撮像し、撮像画像を取得する撮像装置と、
前記撮像装置が撮像した前記撮像画像の中から特定の部品種に属する複数の部品屑を画像認識処理によって識別する画像認識処理装置と、
前記画像認識処理装置が識別した前記複数の部品屑を選別する選別装置と、
前記画像認識処理によって識別された部品屑の個数を、スコアと前記部品屑の検知面積との関係に基づいて分類した分類情報を取得し、該分類情報と、前記選別装置の処理能力情報とに基づいて、前記画像認識処理のスコア閾値及び前記選別装置が選別対象とする前記部品屑の検知面積閾値を決定する条件制御装置と
を備えることを特徴とする電気電子部品屑の処理装置。
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