Automatic detecting and sorting device for mutual inductor iron cores

Abstract

The utility model discloses an automatic detecting and sorting device for mutual inductor iron cores, which comprises a conveying unit, a detecting unit and a sorting unit, the detecting unit comprises an excitation detecting mechanism, a visual detecting mechanism and a weighing mechanism, and the sorting unit comprises a screening mechanism and an output mechanism; all the mechanisms are connected in series through the conveying unit. By integrating excitation detection, visual detection and a weighing mechanism, multi-dimensional detection of the transformer iron core is achieved, the comprehensiveness and accuracy of detection are improved, the omission ratio and the misjudgment ratio are effectively reduced, and meanwhile the sorting efficiency is remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of mutual inductor core detection, especially to a mutual inductor core automatic detection sorting device. BACKGROUND

[0002] The mutual inductor is an important metering, measuring and protecting device in the power system, and the quality of its core directly affects the safety and reliability of the mutual inductor and power grid operation. At present, the excitation characteristic detection, size measurement and weight measurement of the mutual inductor core are usually carried out separately, and mostly manually operated, and the following process inspection mode is adopted:

[0003] 1. manual wiring detection of excitation performance; 2. manual measurement of core size; 3. manual weighing of core weight; 4. recording of test results; 5. quality grading after result determination. Obviously, manual operation is not only low in production efficiency, but also easily affected by human factors, resulting in low accuracy of test results and difficulty in quality tracing. Therefore, automation is the development trend.

[0004] For example, the "intelligent current transformer core sorting instrument" disclosed in the Chinese patent document with the application number "CN201610372558.1" includes a mechanical arm, a controller, an excitation circuit and a measurement circuit. The excitation source is connected in the excitation circuit, and the measurement table is connected in the measurement circuit. The excitation circuit and the measurement circuit are fixed on the measurement frame, and the measurement frame is slidingly connected to the fixed frame.

[0005] The above scheme adds a mechanical arm and a corresponding controller, realizes automatic grabbing and classification of the tested core, eliminates the complicated procedures of winding manual installation and removal and manual placement of the tested core, saves working hours and improves work efficiency. However, the detection process of this scheme can only detect whether the excitation performance of the core is qualified, but cannot detect other parameters, and cannot sort and select the core, so the device needs to be optimized. UTILITY MODEL CONTENTS

[0006] In view of the low efficiency of manual sorting of mutual inductor cores and the single and backward function of traditional automatic sorting devices mentioned in the background art, the utility model integrates excitation detection, visual detection and weighing mechanism to realize multi-dimensional detection of mutual inductor cores, improve the comprehensiveness and accuracy of detection, effectively reduce the miss rate and misjudgment rate, and significantly improve the sorting efficiency.

[0007] To achieve the above purpose, the utility model adopts the following technical scheme:

[0008] The application discloses an automatic detection and sorting device for a transformer core, which comprises a conveying unit, a detection unit and a sorting unit.

[0009] The excitation detection mechanism in the detection unit can measure the electromagnetic properties of the core, the visual detection mechanism can identify the appearance defects of the core, and the weighing mechanism can accurately measure the weight of the core. The combination of the three detection methods improves the comprehensiveness and accuracy of detection. The screening mechanism and the output mechanism in the sorting unit can classify and output the cores according to the detection results. The mechanisms are connected in series through the conveying unit, realizing the continuity and efficiency of the whole process. Compared with the traditional manual detection method, the speed and accuracy of detection and sorting are improved, human errors are reduced, and the labor intensity is also reduced. In addition, the modular design makes the system have good expansibility and flexibility, and detection items can be adjusted or added as needed.

[0010] Further, the conveying unit comprises a first conveyor belt arranged on the workbench, one end of which constitutes an excitation detection station; a second conveyor belt arranged perpendicular to the first conveyor belt, one end of which is adjacent to the excitation detection station of the first conveyor belt; an excitation detection cylinder and an auxiliary cylinder arranged respectively at the side of the excitation detection station, the excitation detection cylinder can push the core away from the excitation detection station; and the auxiliary cylinder can push the core pushed away from the excitation detection station into the second conveyor belt. The L-shaped layout of the first and second conveyor belts not only improves the space utilization rate, but also optimizes the work flow. The cooperation of the excitation detection cylinder and the auxiliary cylinder realizes the smooth transfer of the core from one conveyor belt to another, reducing the damage to the product. Compared with the traditional straight-line conveyor belt, this design has the following advantages: high space utilization rate and strong adaptability; realizing the automatic turning and accurate positioning of the core; the cylinder pushing mode reduces friction and wear; the modular design is convenient for maintenance and upgrading. By accurately controlling the thrust and speed of the cylinder, different specifications of the core can be adapted, and the universality of the equipment is improved. In addition, this layout reserves sufficient space for subsequent integration of other detection equipment (such as a visual detection system).

[0011] Further, the excitation detection mechanism comprises: two detection probes arranged above and below the excitation detection station respectively; each detection probe comprises a coaxially sleeved first copper test tube and a second copper test tube, and an insulating layer is arranged between the first copper test tube and the second copper test tube; a first wire is connected to the first copper test tube of the upper detection probe and the second copper test tube of the lower detection probe; a second wire is connected to the first copper test tube of the lower detection probe and the second copper test tube of the upper detection probe; and an excitation tester is electrically connected to the detection probe. The two detection probes are arranged above and below the excitation detection station respectively, ensuring comprehensive detection of the iron core. Each probe is composed of a coaxially sleeved first copper test tube and a second copper test tube, with an insulating layer in between, which greatly improves the uniformity and stability of the electromagnetic field. The connection mode of the first wire and the second wire forms a closed loop, effectively reducing electromagnetic interference. Compared with the traditional single coil design, this structure has higher detection accuracy and stronger anti-interference ability. The coaxial structure also effectively controls the magnetic flux leakage and improves the energy utilization efficiency. The electrical connection between the probe and the excitation tester realizes real-time data acquisition and analysis.

[0012] Further, the visual detection mechanism comprises: a visual detection probe arranged above the second conveyor belt; a visual detection display instrument electrically connected to the visual detection probe; and the weighing device comprises a plurality of weighing sensors embedded in the second conveyor belt. The visual detection probe is arranged above the second conveyor belt and electrically connected to the visual detection display instrument, realizing real-time detection of the appearance of the iron core of the mutual inductor. This arrangement can quickly identify surface defects, size deviations and other problems without contacting the iron core. The weighing device adopts the design of embedding multiple weighing sensors in the second conveyor belt, ensuring continuous and accurate weighing of the iron core during movement. This integrated design effectively improves the detection efficiency compared with the traditional separate weighing station. The combination of visual detection and weighing provides multi-dimensional data for comprehensive quality assessment of the iron core.

[0013] Further, the second conveyor belt is provided with a partition strip at equal intervals, which divides the second conveyor belt into a plurality of weighing stations, and each weighing station is provided with a weighing sensor. The partition strip arranged at equal intervals divides the second conveyor belt into a plurality of independent weighing stations, and each station is provided with a weighing sensor. This design ensures that each iron core can be accurately weighed in an independent space, effectively avoiding mutual interference between adjacent iron cores. Compared with the traditional continuous weighing method, this partition weighing method effectively improves the accuracy and stability of the measurement. The presence of the partition strip also prevents the iron core from shifting or colliding during transmission, further ensuring the reliability of the weighing results. In addition, this modular design makes the system have good scalability and maintainability, and the number of weighing stations or individual sensors can be easily adjusted as needed.

[0014] Further, the screening mechanism comprises a plurality of screening air cylinders arranged along one side of the second conveying belt.

[0015] The output mechanism comprises a plurality of output conveying belts arranged along the other side of the second conveying belt, corresponding to the screening air cylinders one by one, and the plurality of output conveying belts constitute a third conveying belt group. The plurality of screening air cylinders arranged along one side of the second conveying belt can accurately push the different types or qualities of the iron cores onto the corresponding output conveying belts according to the detection results. The output mechanism is composed of a plurality of output conveying belts corresponding to the screening air cylinders one by one, which realizes efficient classification and parallel output of the iron cores. This multi-channel output system effectively improves the sorting efficiency and reduces the bottleneck in the sorting process. At the same time, the one-to-one air cylinder and output conveying belt design ensures the accuracy of classification.

[0016] Further, it further comprises a control device electrically connected with the detection unit, the sorting unit and the conveying unit. The control device can make sorting decisions quickly according to the data obtained by the detection unit, and accurately control the actions of the sorting unit and the conveying unit. Compared with the traditional decentralized control mode, this centralized control system has higher response speed and stronger coordination ability, significantly improving the operation efficiency and reliability of the whole device. Those skilled in the art can further consider using artificial intelligence algorithms to make the control device have self-learning ability, which can optimize the detection and sorting strategy according to historical data.

[0017] Further, the control device comprises a programmable logic controller or a microprocessor; and further comprises a human-computer interaction interface connected with the control device. The control device adopts a programmable logic controller (PLC) or a microprocessor, which provides powerful computing power and flexible programming space for the system. PLC has the characteristics of strong anti-interference ability and high reliability, which is suitable for use in industrial environment; while microprocessor provides higher operation speed and more function extension possibilities. The introduction of the human-computer interaction interface realizes the direct communication between the operator and the equipment, effectively improving the operability and maintenance efficiency of the system. Compared with the traditional hard-wired control system, this design has higher flexibility and scalability. Through the human-computer interface, the operator can monitor the equipment state in real time, adjust parameters, view historical data, etc., so as to optimize the production process.

[0018] Further, it further comprises a data storage device electrically connected with the control device; the data storage device comprises a local storage unit and a remote data transmission module. The local storage unit can record the equipment running data, detection results and sorting information in real time, providing reliable basis for the traceability and quality control of the production process. The remote data transmission module realizes real-time uploading and remote access of data, so that the management personnel can monitor the production status at any time and any place, improving the decision-making efficiency.

[0019] Therefore, the utility model has the following beneficial effects:

[0020] Through integration excitation detection, visual detection and weighing mechanism, realize multidimensional detection to mutual inductor core, improve the comprehensiveness and accuracy of detection, effectively reduce the missed detection rate and misjudgment rate.

[0021] Adopt the design of L-shaped layout conveying unit, combine cylinder pushing mode, optimize the transmission and positioning process of the core, improve the space utilization and transmission efficiency, and reduce the wear of the core in the transfer process.

[0022] By the design of the partition strip and the independent weighing sensor, the precise positioning and isolated weighing of the core are realized, the mutual interference between adjacent cores is effectively avoided, and the weighing accuracy and reliability are improved.

[0023] Through the design of multiple screening cylinders and corresponding output conveying belts, efficient classification and parallel output of the cores are realized, the sorting efficiency is greatly improved, and the bottleneck in the production process is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is the first axial side view of the utility model.

[0025] Figure 2 is the second axial side view of the utility model.

[0026] Figure 3 is Figure 2 the side view of the detection probe.

[0027] In the figure: 100, core, 1, workbench, 2, first conveying belt, 3, second conveying belt, 4, excitation detection station, 5, excitation detection cylinder, 6, auxiliary cylinder, 7, detection probe, 71, upper detection probe, 72, lower detection probe, 8, first copper test tube, 9, second copper test tube, 10, insulating layer, 11, first wire, 12, second wire, 13, excitation tester, 14, visual detection probe, 15, visual detection display instrument, 16, weighing sensor, 17, partition strip, 18, weighing station, 19, screening cylinder, 20, output conveying belt, 21, third conveying belt group. DETAILED DESCRIPTION

[0028] The utility model will be further described below in combination with the drawings and specific embodiments.

[0029] Example 1

[0030] As Figure 1 , 2As shown, an automatic detection and sorting device for a transformer core comprises a conveying unit, a detection unit and a sorting unit. The detection unit comprises an excitation detection mechanism, a visual detection mechanism and a weighing mechanism. The sorting unit comprises a screening mechanism and an output mechanism. Each mechanism is connected in series through the conveying unit. The conveying unit comprises a first conveyor belt 2 arranged on a workbench 1, one end of which constitutes an excitation detection station 4. A second conveyor belt 3 is arranged perpendicular to the first conveyor belt 2, one end of which is adjacent to the excitation detection station 4 of the first conveyor belt 2. An excitation detection cylinder 5 and an auxiliary cylinder 6 are arranged on the side of the excitation detection station 4, respectively. The excitation detection cylinder 5 can push the core 100 away from the excitation detection station 4. The auxiliary cylinder 6 can push the core 100 pushed away from the excitation detection station 4 into the second conveyor belt 3. Figure 3 As shown, each detection probe 7 comprises a coaxially sleeved first copper test tube 8 and a second copper test tube 9. An insulating layer 10 is arranged between the first copper test tube 8 and the second copper test tube 9. A first wire 11 connects the first copper test tube 8 of the upper detection probe and the second copper test tube 9 of the lower detection probe. A second wire 12 connects the first copper test tube 8 of the lower detection probe and the second copper test tube 9 of the upper detection probe. An excitation tester 13 is electrically connected to the detection probe 7. The visual detection mechanism comprises a visual detection probe 14 arranged above the second conveyor belt 3. A visual detection display instrument 15 is electrically connected to the visual detection probe 14. The weighing device comprises a plurality of weighing sensors 16 embedded in the second conveyor belt 3. The visual detection probe 14 is arranged above the second conveyor belt 3 and is electrically connected to the visual detection display instrument 15, realizing real-time detection of the appearance of the transformer core 100. The second conveyor belt 3 is provided with equally spaced separation strips 17, which divide the second conveyor belt 3 into a plurality of weighing stations 18. Each weighing station 18 is provided with a weighing sensor 16.

[0031] The excitation detection mechanism in the detection unit can measure the electromagnetic properties of the iron core 100, the visual detection mechanism can identify the appearance defects of the iron core 100, and the weighing mechanism can accurately measure the weight of the iron core 100. The combination of the three detection methods improves the comprehensiveness and accuracy of detection. The screening mechanism and output mechanism in the sorting unit can classify and output the iron cores according to the detection results. The various mechanisms are connected in series through the conveying unit, realizing the continuity and efficiency of the whole process. Compared with the traditional manual detection method, the speed and accuracy of detection and sorting are improved, human errors are reduced, and the labor intensity is also reduced. In addition, the modular design makes the system have good expansibility and flexibility, and can adjust or add detection items as needed. The L-shaped layout of the first and second conveying belts 3 not only improves the space utilization rate, but also optimizes the work flow. The cooperation of the excitation detection air cylinder 5 and the auxiliary air cylinder 6 realizes the smooth transfer of the iron core from one conveying belt to another, reducing product damage. This design has significant advantages over traditional straight-line conveying belts: high space utilization rate and strong adaptability; realize the automatic turning and precise positioning of the iron core; the air cylinder pushing mode reduces friction and wear; the modular design is convenient for maintenance and upgrading. By accurately controlling the thrust and speed of the air cylinder, different specifications of iron cores can be adapted, improving the universality of the equipment. In addition, this layout reserves sufficient space for subsequent integration of other detection equipment (such as a visual detection system).

[0032] The upper and lower detection probes are located above and below the excitation detection station 4, ensuring comprehensive detection of the core. Each probe is composed of a coaxial first copper test tube 8 and a second copper test tube 9, with an insulating layer 10 in between, which greatly improves the uniformity and stability of the electromagnetic field. The connection of the first wire 11 and the second wire 12 forms a closed loop, effectively reducing electromagnetic interference. Compared with the traditional single coil design, this structure has higher detection accuracy and stronger anti-interference ability. The coaxial structure also effectively controls the magnetic flux leakage and improves the energy utilization efficiency. The electrical connection between the probe and the excitation tester 13 realizes real-time data acquisition and analysis. Without contacting the core, it quickly identifies surface defects, size deviations, and other issues. The weighing device adopts a design of embedding multiple weighing sensors 16 in the second conveyor belt 3, ensuring continuous and accurate weighing during the movement of the core. This integrated design effectively improves the detection efficiency compared to the traditional separate weighing station 18. The combination of visual detection and weighing provides multi-dimensional data for comprehensive quality assessment of the core. The equally spaced separation strips 17 divide the second conveyor belt 3 into several independent weighing stations 18, each equipped with a weighing sensor 16. This design ensures that each core can be accurately weighed in an independent space, effectively avoiding interference between adjacent cores. Compared to the traditional continuous weighing method, this separated weighing method effectively improves the accuracy and stability of the measurement. The presence of the separation strips 17 also prevents the displacement or collision of the cores during the conveying process, further ensuring the reliability of the weighing results. In addition, this modular design makes the system have good scalability and maintainability, and can easily adjust the number of weighing stations 18 or replace individual sensors as needed.

[0033] In this embodiment, the screening mechanism includes multiple screening cylinders 19 arranged along one side of the second conveyor belt 3; the output mechanism includes multiple output conveyor belts 20 arranged along the other side of the second conveyor belt 3, corresponding one-to-one with the screening cylinders 19, and the multiple output conveyor belts 20 form a third conveyor belt group 21. The multiple screening cylinders 19 are arranged along one side of the second conveyor belt 3, which can accurately push different types or quality of cores onto the corresponding output conveyor belt 20 according to the detection results. The output mechanism is composed of multiple output conveyor belts 20, corresponding one-to-one with the screening cylinders 19, which realizes efficient classification and parallel output of the cores. This multi-channel output system effectively improves the sorting efficiency and reduces the bottleneck in the sorting process. At the same time, the one-to-one cylinder and output conveyor belt 20 design ensures the accuracy of classification.

[0034] The embodiment also includes a control device electrically connected with the detection unit, the sorting unit and the conveying unit. The control device can make sorting decisions quickly according to the data obtained by the detection unit, and accurately control the actions of the sorting unit and the conveying unit. Compared with the traditional decentralized control mode, this centralized control system has higher response speed and stronger coordination ability, significantly improving the operation efficiency and reliability of the entire device. Those skilled in the art can further consider using artificial intelligence algorithms to enable the control device to have self-learning ability and optimize detection and sorting strategies based on historical data. The control device includes a programmable logic controller or a microprocessor; and a human-computer interaction interface connected with the control device. The control device uses a programmable logic controller (PLC) or a microprocessor, which provides powerful computing power and flexible programming space for the system. The PLC has strong anti-interference ability and high reliability, and is suitable for use in industrial environments; while the microprocessor provides higher operation speed and more function extension possibilities. The introduction of the human-computer interaction interface realizes the direct communication between the operator and the equipment, effectively improving the operability and maintenance efficiency of the system. Compared with the traditional hard-wired control system, this design has higher flexibility and scalability. Through the human-computer interface, the operator can monitor the equipment status in real time, adjust parameters, view historical data, etc., thereby optimizing the production process. The embodiment also provides a data storage device electrically connected with the control device; the data storage device includes a local storage unit and a remote data transmission module. The local storage unit can record equipment operation data, detection results and sorting information in real time, providing a reliable basis for production process traceability and quality control. The remote data transmission module realizes real-time uploading and remote access of data, so that the management personnel can monitor the production status at any time and any place, improving the decision-making efficiency.

[0035] In this embodiment, the conveying device adopts an L-shaped layout, including a first conveyor belt 2 arranged horizontally and a second conveyor belt 3 arranged vertically. An excitation detection station 4 is arranged at the end of the first conveyor belt 2, and one detection probe is arranged above and below the station. These probes adopt a coaxial copper tube structure, which is composed of a nested first copper test tube 8 and a second copper test tube 9, and an insulating layer 10 is arranged in the middle. A first wire 11 connects the upper end of the first copper test tube 8 with the lower end of the second copper test tube 9, and a second wire 12 connects the lower end of the first copper test tube 8 with the upper end of the second copper test tube 9, forming a closed circuit. This design is equivalent to two coils, which can effectively improve the uniformity and stability of the electromagnetic field.

[0036] The excitation characteristic detection device includes a mechanical unit, an electrical measurement unit and a data acquisition unit. The voltage application unit in the electrical measurement unit can generate voltage signals of different amplitudes and frequencies and apply them to the transformer core; the current detection unit can detect the excitation current of the transformer core in real time. The data acquisition unit is responsible for collecting voltage and current data and transmitting them to the control device for processing.

[0037] The visual detection device adopts machine vision technology to convert the detected target into an image signal and transmit it to a dedicated image processing system. The system converts the image into a digital signal based on pixel distribution, brightness, color, etc., and then extracts the target's features such as size, area, etc. According to the preset tolerance and other conditions, the system outputs the results, realizing the automatic identification function of the core shape, size, and area. The visual detection probe 14 is installed above the second conveying belt 3 and is electrically connected with the visual detection display instrument 15, ensuring the real-time and accuracy of the detection process.

[0038] The weighing device is composed of weighing sensors 16 and a signal processing unit. Multiple weighing sensors 16 are ingeniously embedded inside the second conveying belt 3, forming independent weighing stations 18 by setting partition strips 17 at equal intervals on the surface of the conveying belt. This design effectively avoids mutual interference between adjacent cores, significantly improving the weighing accuracy. The weighing sensor 16 can accurately measure the weight of the transformer core and convert the weight signal into an electrical signal; the signal processing unit processes the electrical signal through amplification, filtering, and analog-to-digital conversion, etc. for the control device to read and analyze.

[0039] Data judgment and grading are the key links of the system. The control device receives all data from the excitation characteristic detection device, visual measurement device, and weighing device, and conducts comprehensive analysis and evaluation according to the preset quality standards and algorithms. The system will grade the cores according to the evaluation results and control the sorting device to transport cores of different grades to the corresponding output conveying belts 20. On both sides of the second conveying belt 3, multiple screening cylinders 19 are arranged on one side, and multiple output conveying belts 20 are correspondingly arranged on the other side. These output conveying belts 20 form the third conveying belt group 21, which is used to classify and output cores of different quality grades.

[0040] The entire system is managed by a central control device, which uses a programmable logic controller (PLC) or a microprocessor. The control device is closely connected with each functional module, realizing the automatic control of the entire detection and sorting process. The data storage device is responsible for recording all detection data and results, including excitation characteristic data, size data, weight data, and final quality judgment results, providing a reliable basis for subsequent analysis and traceability.

[0041] In practical applications, the operation process of the transformer core automatic detection and sorting device is as follows: first, the operator starts the system and sets the relevant parameters through the man-machine interface, including detection standards, sorting categories, etc. The transformer core to be detected is placed at the entrance of the first conveyor belt 2, and then conveyed to the excitation detection station 4. At this time, the upper and lower detection probes excite the core for detection, and the excitation tester 13 collects data and transmits them to the control device. After detection is completed, the excitation detection cylinder 5 pushes the core away from the station, and the auxiliary cylinder 6 immediately pushes it into the second conveyor belt 3.

[0042] When the core moves along the second conveyor belt 3, it first passes through the visual detection probe 14, which captures the appearance image of the core in real time and transmits it to the visual detection display instrument 15. Then, the core enters the weighing station 18, and the weighing sensor 16 accurately measures its weight. All detection data are transmitted to the central control device in real time, and after algorithm processing, the system makes a sorting decision. According to the decision result, the corresponding screening cylinder 19 is started to push the core to the corresponding output conveyor belt 20. During the whole process, the data storage device continuously records the detection results and sorting information, which are stored locally and uploaded to the cloud through the remote data transmission module, for subsequent analysis and traceability.

[0043] Example 2

[0044] This embodiment is based on Example 1 as a preferred solution, and a buffer zone can be added to the second conveyor belt 3 to temporarily store the detected cores that have not been sorted yet, in order to improve the overall throughput of the system. In addition, a machine learning algorithm can be introduced to continuously optimize the detection parameters and sorting decisions by analyzing historical data, improving the adaptability and accuracy of the system.

[0045] In actual production, this device can significantly improve the detection efficiency and sorting accuracy of transformer cores. For example, in a typical transformer production line, the traditional manual detection method can process about 100-150 cores per hour, while this device can increase this number to 500-600 cores per hour, while reducing the detection error rate from 2-3% for manual operation to below 0.5%. In addition, since full automation and data are realized, the device can run continuously for 24 hours, greatly improving the overall efficiency of the production line.

Claims

1. An automatic detection and sorting device for transformer cores, comprising a conveying unit, characterized in that, Also include: The detection unit and the sorting unit, the detection unit includes excitation detection mechanism, visual detection mechanism and weighing mechanism, the sorting unit includes screening mechanism and output mechanism; The conveying unit includes a first conveyor belt with an excitation detection station at one end and a second conveyor belt perpendicular to the first conveyor belt, and an excitation detection cylinder and an auxiliary cylinder are arranged side by side on the excitation detection station; The excitation detection mechanism includes an upper detection probe and a lower detection probe arranged above and below the excitation detection station, and an excitation tester electrically connected to the upper detection probe and the lower detection probe; Each mechanism is connected in series through the conveying unit.

2. The apparatus of claim 1, wherein, It includes a workbench, the first conveyor belt is arranged on the workbench; one end of the second conveyor belt is adjacent to the excitation detection station of the first conveyor belt; the excitation detection cylinder can push the iron core away from the excitation detection station; the auxiliary cylinder can push the iron core pushed away from the excitation detection station into the second conveyor belt.

3. The apparatus of claim 1, wherein, The excitation detection mechanism includes: Each detection probe includes a coaxially sleeved first copper test tube and a second copper test tube, and an insulating layer is arranged between the first copper test tube and the second copper test tube; The first wire connects the first copper test tube of the upper detection probe and the second copper test tube of the lower detection probe; The second wire connects the first copper test tube of the lower detection probe and the second copper test tube of the upper detection probe.

4. The apparatus of claim 2, wherein, The visual detection mechanism includes: The visual detection probe is arranged above the second conveyor belt; The visual detection display instrument is electrically connected to the visual detection probe; The weighing mechanism includes a plurality of weighing sensors embedded in the second conveyor belt.

5. The apparatus of claim 4, wherein The second conveyor belt is provided with a plurality of partition strips at equal intervals, which divide the second conveyor belt into a plurality of weighing stations, and each weighing station is provided with a weighing sensor.

6. The apparatus of claim 2, wherein, The screening mechanism includes: A plurality of screening cylinders are arranged along one side of the second conveyor belt; The output mechanism includes a plurality of output conveyor belts arranged along the other side of the second conveyor belt, corresponding to the screening cylinders, and the plurality of output conveyor belts form a third conveyor belt group.

7. The apparatus of any one of claims 1-6, wherein, Also include control device, the control device is electrically connected with the detection unit, the sorting unit and the conveying unit.

8. The apparatus of claim 7, wherein, The control device includes a programmable logic controller or a microprocessor; Also include human-computer interaction interface, connected with the control device.

9. The apparatus of claim 7, wherein, Also include data storage device, electrically connected with the control device; The data storage device includes a local storage unit and a remote data transmission module.

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