Magnetic performance detection method based on magnetic development forming principle of developing sheet

Abstract

The invention relates to a magnetic performance detection method based on a film magnetic development forming principle, and relates to the technical field of magnetic performance detection. Through the steps of preparation before detection, implementation of the detection process, treatment after detection and the like, magnetic performance parameters of the magnetic steel are rapidly and completely detected, meanwhile, development detection of the magnetic steel can be efficiently achieved through cooperation of a vibration disc, an automatic magnetizing mechanism, a development sheet placement platform, development detection equipment, a conveying belt, an electric control box and other equipment in the detection process, and the detection efficiency is improved. The problems of low efficiency, high cost, inapplicability to batch detection and the like are solved, and meanwhile, a product positioning mechanism, a visual detection mechanism and a stacking mechanism are arranged in the development detection equipment, so that full-process efficient collaborative development detection can be formed, the detection efficiency is greatly enhanced, and the shutdown probability of the equipment is reduced.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of magnetic performance detection, in particular to a magnetic performance detection method based on a film magnetic developing forming principle. BACKGROUND

[0002] At present, in the production and processing process of magnetic steel, due to the uneven distribution of components of the magnetic material during sintering, or the defects such as vacancies, impurities and dislocations in the crystal structure of the material, the magnetic properties of the material may be uneven, and in some areas, the content of the magnetic component is low or other phase structures are not conducive to the magnetism, which will show weak magnetism. In addition, if the magnetizing parameters (such as magnetizing current, magnetizing time, magnetizing direction, etc.) are not properly selected during the magnetizing process of the magnetic material, the magnetic properties of the material may not reach the best state, or the magnetic properties may gradually decay after magnetizing, resulting in weak magnetism of the product.

[0003] For the related technologies in the above, the traditional magnetic performance detection method often relies on complex instruments and equipment, which is cumbersome to operate, high in cost and long in detection time. This brings great inconvenience to some occasions that require rapid detection of magnetic properties, such as quality control in production sites and research in small laboratories. Therefore, there is an urgent need for a new magnetic performance detection method that can simplify the detection process, reduce the detection cost and improve the detection efficiency while ensuring the detection accuracy. SUMMARY

[0004] The purpose of the present application is to provide a magnetic performance detection method based on the film magnetic developing forming principle to solve the problems raised in the background.

[0005] The magnetic performance detection method based on the film magnetic developing forming principle provided by the present application adopts the following technical solution: comprising the following steps: S1, preparation before detection: determining the detection object, understanding the material, specification, surface state and other information of the detected product, selecting appropriate inspection standards according to the product, and preparing the necessary detection tools such as developing film and visual detection equipment; S2, detection process implementation: starting the developing detection equipment, adjusting the developing film to a suitable detection height from the product to be detected, and at the same time, collecting the magnetic developing image of the product on the developing film, and repeatedly detecting the magnetic steel product at multiple positions; S3, post-detection processing: transmitting the collected image to the data analysis processing unit for preprocessing, extracting the characteristic parameters of the image after preprocessing, calculating the magnetic performance parameters of the magnetic steel to be detected by using the pre-established mathematical model, and outputting the detection results to the user for further analysis and processing.

[0006] By adopting the technical scheme, i.e. ensuring the consistency and applicability of detection through the standardized pre-detection preparation (S1), the coverage rate of defect identification and the reliability of results can be significantly improved through repeated detection at multiple positions in the detection process implementation (S2), and the precise quantification of magnetic performance parameters can be realized through the automatic processing and mathematical model analysis of the collected images in the post-detection processing (S3).

[0007] Preferably, the step S1 specifically comprises the following steps: S11: checking the working state of the developing equipment; S12: calibrating the parameters of the developed film and the visual detection equipment.

[0008] Preferably, the step S2 specifically comprises the following steps: S21: selecting appropriate magnetizing parameters according to the size and type of the detected magnetic steel; S22: turning on the total power supply of the magnetizing equipment and the developing detection equipment, and starting the interface of each equipment; S23: taking a quantity of qualified magnetic steels and pouring them into the vibration plate, then feeding them into the magnetizing mechanism through the vibration plate, and then feeding the magnetized products into the transfer plate, and then feeding the products into the developing detection equipment through the conveying belt, and then collecting images through the detection visual equipment; S24: putting unqualified weak magnetic products, observing the difference between the qualified and unqualified products, and extracting the image difference for judgment according to the difference; S25: setting the judgment standard, starting the software detection function, opening the automatic feeding and magnetizing of the vibration plate and the magnetizing equipment, and starting the detection; S26: pouring the undetected batch products into the vibration plate, and noting that the quantity of the poured magnetic steels should not exceed 2 / 3 of the capacity of the vibration plate; S27: after the products are magnetized, they are fed into the developing detection position, and then the qualified products are automatically discharged when passing through, and the equipment prompts NG and removes the unqualified products when passing through, and the corresponding images are recorded.

[0009] By adopting the technical scheme, i.e. adopting the vibration plate feeding + conveying belt linkage design, the detection beat speed is greatly improved; the intelligent comparison algorithm based on the image difference between qualified and unqualified products greatly improves the accuracy of weak magnetic defect identification; the magnetizing-detecting-sorting integrated assembly line design reduces the detection labor cost, and relying on the unqualified product image tracing system, the precise positioning of quality problems and process optimization are realized.

[0010] Preferably, the developing detection device in the step S22 comprises a bottom cabinet, a cabinet body is connected to the upper end of the bottom cabinet, a cabinet door is rotatably connected to the front side of the cabinet body, a conveying belt is arranged on the top of the bottom cabinet, a product positioning mechanism is arranged in the middle of the conveying belt, a visual detection mechanism is arranged opposite to the left side of the product positioning mechanism, and a stacking mechanism is arranged opposite to the right side of the product positioning mechanism.

[0011] Preferably, the product positioning mechanism comprises a positioning structure and a jacking structure, the positioning structure is arranged on the top of the bottom cabinet, and the jacking structure is arranged at the lower end in the positioning structure.

[0012] Preferably, the positioning structure comprises a first supporting plate, a first air cylinder is arranged on the upper end of the middle of the first supporting plate, limiting rods are inserted into the upper ends of the first air cylinder and the limiting rods on both sides of the upper end of the first supporting plate, and a clamping plate structure is arranged opposite to the first air cylinder and the limiting rods.

[0013] Preferably, the clamping plate structure comprises a glass limiting frame, the glass limiting frame is connected to the upper ends of the first air cylinder and the limiting rods, a developing film is arranged in the glass limiting frame, a glass is connected to the upper end of the developing film, the glass is embedded in the glass limiting frame, and a clamping plate is arranged on the outer upper end of the glass limiting frame.

[0014] By adopting the above technical scheme, the positioning structure drives the clamping plate structure through the rigid linkage of the first air cylinder and the limiting rod, realizes the accurate positioning of the magnetic steel product, the integrated design of the glass limiting frame and the developing film guarantees the high-definition collection of the magnetic developing image, and the quick maintenance and replacement of the developing film are realized through the detachable clamping plate, the vertical self-adaptive adjustment function of the jacking structure can realize the flexible positioning of magnetic steels of different specifications in a short time, and the detection efficiency is significantly improved and the equipment downtime is reduced.

[0015] Preferably, the jacking structure comprises a second supporting plate, the second supporting plate is connected to the bottom cabinet, a second air cylinder is arranged on the upper end of the middle of the second supporting plate, a first connecting block is connected to the top of the second air cylinder, third air cylinders are arranged on both sides of the upper end of the second supporting plate, second connecting blocks are arranged on the top of the third air cylinders, and first clamping shafts are inserted into the top of the first connecting block and the second connecting block.

[0016] By adopting the above technical scheme, the second air cylinder is used as the main jacking shaft, and the synchronous compensation adjustment of the two third air cylinders can dynamically balance the load difference and ensure that the developing film is closely attached to the surface of the magnetic steel.

[0017] Preferably, the visual detection mechanism comprises a support frame, the bottom of the support frame is connected with the bottom cabinet, the top of the support frame is provided with a first moving module, the top of the first moving module is connected with one side of a moving frame, the front side of the upper end of the moving frame is provided with a second moving module, the second moving module is provided with a connecting seat outside, the upper end of the connecting seat is locked and connected with a camera seat, the front side of the camera seat is connected with a CCD camera, the lower end of the connecting seat is locked and connected with a lamp holder, the front side of the lamp holder is provided with a developing lamp ring, the other side of the moving frame is connected with a guide rail, and the guide rail is arranged on the upper end of a third supporting plate.

[0018] By adopting the above technical scheme, that is, adopting the vertical intersection layout of the first moving module and the second moving module, and combining the sliding guide function of the guide rail, the CCD camera has an X / Y adjustment stroke, and can adapt to the developing detection requirements of magnetic steels of different sizes.

[0019] Preferably, the stacking mechanism comprises a bottom plate, the lower end of the bottom plate is connected with the bottom cabinet, the middle upper end of the bottom plate is fixedly provided with a connecting frame, the upper end of the connecting frame is provided with a fourth cylinder, the top of the fourth cylinder is provided with a third connecting block, the upper ends of the two sides of the connecting frame are provided with fifth cylinders, the top of each fifth cylinder is connected with the fourth connecting block, the upper ends of the third connecting block and the fourth connecting block are both inserted with a second clamping shaft, the upper ends of the two sides of the bottom plate are bolted with a fourth supporting plate, the upper end of the fourth supporting plate is connected with a supporting plate, the upper ends of the two sides of the supporting plate are both fastened with a fixed strip, one side of the inside of the fixed strip is rotatably provided with a stop block, and the upper end of the supporting plate is provided with a baffle on four sides.

[0020] By adopting the above technical scheme, the bidirectional driving design of the fourth cylinder and the fifth cylinder and the rigid insertion of the second clamping shaft are combined, the accurate positioning of the magnetic steel stacking is realized, the modular combination of the supporting plate and the baffle can adapt to different specifications of products, and the rotating stop block limits the supporting material, so that the stacking stability of unqualified products is ensured.

[0021] In summary, the present application has at least one of the following beneficial technical effects: 1. The present application can quickly and fully detect the magnetic performance parameters of the magnetic steel through the steps of preparation before detection, detection process implementation and post-detection processing, and can efficiently realize the developing detection of the magnetic steel by combining the rotating vibration disc, the automatic magnetizing mechanism, the developing film placing platform, the developing detection equipment, the conveying belt and the electric control box in the detection process implementation, so as to solve the problems of low efficiency, high cost and unsuitable batch detection, and at the same time, the product positioning mechanism, the visual detection mechanism and the stacking mechanism arranged in the developing detection equipment can constitute a full-process efficient cooperative developing detection, so that the detection efficiency is greatly improved and the equipment downtime probability is reduced. 2. The application sets the product positioning mechanism, that is, when the magnetic steel is conveyed to the middle detection position by the conveying belt, the second cylinder of the jacking structure serves as the main driving shaft, cooperates with the third cylinder on both sides to adjust synchronously, pushes the first and second abutting blocks vertically, locks the external transfer plate through the first clamping shaft, and ensures that the film is closely attached to the surface of the magnetic steel; at the same time, the first cylinder of the positioning structure drives the clamping plate structure to press rigidly along the limiting rod, clamps the magnetic steel by the glass limiting frame, and further improves the detection and placement accuracy of the magnetic steel; 3. The application sets the visual detection mechanism, that is, the support frame, the bottom cabinet and the third support plate constitute a rigid frame, the first moving module drives the moving frame to move longitudinally, the second moving module adjusts transversely through the connecting seat, and the CCD camera and the developing lamp ring are precisely focused on the surface of the magnetic steel; at the same time, the stable support of the guide rail realizes precise image acquisition positioning and ensures accurate acquisition and shooting of the magnetic steel developing picture; 4. The application sets the stacking mechanism, that is, after the magnetic steel completes detection and judges the degree of eligibility, the unqualified magnetic steel can be transmitted to the inside of the stacking mechanism by the conveying belt, at this time, the fourth cylinder and the fifth cylinder operate simultaneously, drive the third and fourth abutting blocks to vertically lift, and through the second clamping shaft, the transfer plate supporting the unqualified magnetic steel can be rigidly inserted, realizing precise positioning of the magnetic steel stacking; the hollow design of the supporting plate and the manual four-side baffles can form a modular stacking space, and the unqualified products are inclined and positioned to prevent falling through the rotating stop block, ensuring the stability of the stacking. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a process structure schematic diagram of the application; Figure 2 is a specific process schematic diagram of the application before detection; Figure 3 is a specific process schematic diagram of the application during detection; Figure 4 is a structure schematic diagram of the developing detection equipment of the application; Figure 5 is a front view structure schematic diagram of the developing detection equipment of the application; Figure 6 is a structure schematic diagram of the bottom cabinet without the cabinet body of the application; Figure 7 is a structure schematic diagram of the product positioning mechanism of the application; Figure 8 is a schematic diagram of the positioning structure of the application; Figure 9 is a split schematic diagram of the clamping plate structure of the application; Figure 10 is a three-dimensional schematic diagram of the jacking structure of the application; Figure 11 is a structure schematic diagram of the visual detection mechanism of the application; Figure 12 is a schematic view of the right view structure of the visual inspection mechanism of the present application; Figure 13 is a schematic view of the stacking mechanism structure of the present application; Figure 14 is a schematic view of the stacking mechanism structure of the present application; Figure 15 is a schematic view of the stacking mechanism structure of the present application; Figure 16 is a schematic view of the stacking mechanism structure of the present application; Figure 15 is an enlarged view of position A in the present application; Figure 17 is a qualified magnetic steel development detection diagram of the present application; Figure 18 is a weak magnetic magnetic steel development detection diagram of the present application.

[0023] BRIEF DESCRIPTION OF DRAWINGS: 1, base cabinet; 2, cabinet body; 3, cabinet door; 4, conveyor belt; 5, product positioning mechanism; 51, positioning structure; 511, first support plate; 512, first air cylinder; 513, limiting rod; 514, clamping plate structure; 5141, glass limiting frame; 5142, film; 5143, glass; 5144, clamping plate; 52, jacking structure; 521, second support plate; 522, second air cylinder; 523, first butt block; 524, third air cylinder; 525, second butt block; 526, first clamping shaft; 6, visual inspection mechanism; 61, support frame; 62, first moving module; 63, moving frame; 64, second moving module; 65, connecting seat; 66, camera seat; 67, CCD camera; 68, lamp holder; 69, developing lamp ring; 610, guide rail; 611, third support plate; 7, stacking mechanism; 71, bottom plate; 72, connecting frame; 73, fourth air cylinder; 74, third butt block; 75, fifth air cylinder; 76, fourth butt block; 77, second clamping shaft; 78, fourth support plate; 79, supporting plate; 710, fixed strip; 711, stop block; 712, baffle. DETAILED DESCRIPTION

[0024] The present application will be further described in detail below in conjunction with the accompanying drawings. Figure 1 - the accompanying drawings Figure 13 , the present application will be further described in detail.

[0025] A magnetic property detection method based on the principle of film magnetic development forming, referring to Figures 1-3 , comprising the following steps: S1, preparation before detection: determine the detection object, understand the information of the material, specification, surface state and other information of the detected product, and select the appropriate inspection standard according to the product, prepare the necessary detection tools such as film and visual inspection equipment; S2. Implementation of the testing process: Start the developing testing equipment, adjust the developing film to a suitable testing height from the product to be tested, and at the same time, collect the magnetic developing image of the product on the developing film, and perform repeated testing of the magnetic steel product multiple times and at various positions; S3. Post-test processing: The collected images are transferred to the data analysis and processing unit for pre-processing. After the pre-processing is completed, the characteristic parameters of the image are extracted, and the magnetic performance parameters of the magnetic steel to be tested are calculated using the pre-established mathematical model. The test results are output to the user for further analysis and processing.

[0026] Specifically, standardized pre-test preparation (S1) ensures the consistency and applicability of the test. Repeated multi-position testing during the test process (S2) significantly improves the coverage and reliability of defect identification. Combined with the automated processing and mathematical model analysis of the captured images in post-test processing (S3), accurate quantification of magnetic performance parameters can be achieved.

[0027] The specific steps of step S1 are as follows: S11: Check the working status of the developing device: S12: Calibrate parameters of the display film and visual inspection equipment.

[0028] The specific steps of step S2 are as follows: S21, selecting appropriate magnetization parameters according to the size and type of the magnetic steel being tested; S22, turning on the main power of the magnetizing device and the developing and detecting device, and opening the interface of each device; S23, take a number of qualified magnetic steel and pour it into the vibration plate, through the vibration plate to enter the magnetization mechanism, after magnetization, the product enters the transfer plate, the transfer plate passes through the conveyor belt to the development and detection equipment inspection position, and the inspection vision equipment performs image acquisition; S24, putting unqualified weak magnetic products in, observing the difference between the qualified and unqualified product images, and extracting the image difference for judgment based on the size of the difference; S25, set the judgment standard, start the software detection function, turn on the vibration plate and magnetizing equipment to automatically load and magnetize, and start detection; S26, pour the untested batch products into the vibration plate, and make sure that the amount of magnets poured in should not exceed 2 / 3 of the capacity of the vibration plate; S27, after the product is magnetized, it enters the developing detection position. According to the set detection parameters, qualified products will automatically flow out when they pass, and the equipment will prompt NG when defective products pass, and the defective products will be rejected and recorded with corresponding pictures.

[0029] Specifically, the vibration disc feeding + conveying belt linkage design is adopted to greatly improve the detection beat speed; the intelligent comparison algorithm based on the image difference of qualified / unqualified products greatly improves the weak magnetic defect recognition accuracy; the magnetizing-detecting-sorting integrated pipeline design reduces the detection labor cost, and relying on the defective product image tracing system, the accurate positioning of quality problems and process optimization are realized.

[0030] Referring to Figures 4-6 , the developing detection equipment in the step S22 comprises a bottom cabinet 1, the upper end of the bottom cabinet 1 is connected with a cabinet body 2, the front side of the cabinet body 2 is rotationally connected with a cabinet door 3, a conveying belt 4 is arranged on the top of the bottom cabinet 1, limit pieces are arranged on both sides of the middle section of the upper end of the conveying belt 4, the limit pieces can realize the preliminary positioning of the subsequent turnover plate with magnetic steel, a product positioning mechanism 5 is arranged on the middle section of the conveying belt 4, a visual detection mechanism 6 is arranged on the left side of the product positioning mechanism 5, and a stacking mechanism 7 is arranged on the right side of the product positioning mechanism 5.

[0031] Referring to Figures 7-10 , the product positioning mechanism 5 comprises a positioning structure 51 and a jacking structure 52, the positioning structure 51 is arranged on the top of the bottom cabinet 1 and is located on the middle section of the conveying belt 4, and the jacking structure 52 is arranged at the lower end in the positioning structure 51.

[0032] The positioning structure 51 comprises first supporting plates 511, first air cylinders 512 are arranged on the middle sections of the upper ends of the first supporting plates 511, the first supporting plates 511 are symmetrically arranged on the left and right sides, the bottoms of the first supporting plates 511 on the left and right sides are connected with the bottom cabinet 1, limit rods 513 are vertically inserted into both sides of the upper end of each first supporting plate 511, and the upper ends of the first air cylinders 512 and the limit rods 513 are connected with a clamping plate structure 514.

[0033] The clamping plate structure 514 comprises a glass limiting frame 5141, the glass limiting frame 5141 is connected with the upper ends of the first air cylinders 512 and the limit rods 513, a developing film 5142 is arranged in the glass limiting frame 5141, a glass 5143 is connected with the upper end of the developing film 5142 and is embedded in the glass limiting frame 5141, and a clamping plate 5144 is arranged on the outer upper end of the glass limiting frame 5141. The positioning structure 51 drives the clamping plate structure 514 through the rigid linkage of the first air cylinders 512 and the limit rods 513 to realize the accurate positioning of the magnetic steel product, the integrated design of the glass limiting frame 5141 and the developing film 5142 not only guarantees the high-definition collection of the magnetic developing image, but also realizes the quick maintenance and replacement of the developing film 5142 through the detachable clamping plate 5144, the vertical self-adaptive adjustment function of the jacking structure 52 can realize the flexible positioning of the magnetic steel of multiple specifications in a short time, and the detection efficiency is greatly improved and the equipment downtime is reduced.

[0034] The lifting structure 52 comprises a second supporting plate 521, the lower end of the second supporting plate 521 is connected with the bottom cabinet 1, the middle part of the upper end of the second supporting plate 521 is provided with a second air cylinder 522, the second air cylinder 522 is opposite to the middle part of the lower end of the clamping plate structure 514, the top of the second air cylinder 522 is connected with a first butt joint block 523, the upper end of the second supporting plate 521 is provided with a third air cylinder 524 on both sides, the top of the third air cylinder 524 on both sides is provided with a second butt joint block 525, the top of the first butt joint block 523 and the second butt joint block 525 is inserted with a first clamping shaft 526, the first clamping shaft 526 is connected with an external transfer plate, the first clamping shaft 526 can limit the external transfer plate, and the external transfer plate can keep the accurate detection position, the second air cylinder 522 is used as a main lifting shaft, and the synchronous compensation adjustment of the third air cylinder 524 on both sides can dynamically balance the load difference, so that the developing plate 5142 is closely attached to the surface of the magnetic steel.

[0035] Specifically, when the transfer plate with the magnetic steel is transmitted to the lower side of the positioning structure 51 along the conveying belt 4, the first air cylinder 512 arranged on the upper end of the first supporting plate 511 on both sides will operate at the same time to drive the clamping plate structure 514 above to vertically press down along the limiting rod 513, the limiting rod 513 is rigidly inserted into the first supporting plate 511 to guide the movement of the clamping plate structure 514 to be stable, when the glass limiting frame 5141 of the clamping plate structure 514 is closed, the developing plate 5142 embedded in the glass limiting frame 5141 can contact the surface of the magnetic steel, the developing plate 5142 can adsorb the magnetic domain distribution of the magnetic steel based on the magnetic developing principle, and the glass 5143 as a transparent medium covers the developing plate 5142 to protect the developing plate 5142 from being abraded and allow the CCD camera 67 in the subsequent visual detection mechanism 6 to collect high-definition images through the glass 5143; Meanwhile, before the clamping plate structure 514 is pressed down, the second air cylinder 522 in the lifting structure 52 can be driven to vertically push up the first butt joint block 523, and the third air cylinder 524 arranged on both sides can be simultaneously operated to push up the second butt joint block 525, so that the first clamping shaft 526 arranged on the upper end of the first butt joint block 523 and the second butt joint block 525 is inserted into the external transfer plate with the magnetic steel to accurately position the magnetic steel and ensure the stability of the lifting process, when the lifting reaches a certain position, the first air cylinder 512 can be driven to move the clamping plate structure 514 downward to closely attach the magnetic steel, ensure the accuracy of the magnetic steel detection position, improve the detection accuracy and quality, when the detected magnetic steel is developed and qualified, the magnetic steel can be transmitted out along the conveying belt 4 after the detection is completed, if the detected magnetic steel is unqualified, the magnetic steel can be transmitted to the stacking mechanism 7 along the conveying belt 4 for stacking and recycling of unqualified magnetic steels.

[0036] Referring to Figure 11 and Figure 12The visual detection mechanism 6 comprises a support frame 61 connected to the bottom cabinet 1 at the bottom, a first moving module 62 fast-connected and arranged at the top of the support frame 61, a moving frame 63 connected to one side of the top of the first moving module 62, a second moving module 64 arranged at the front side of the upper end of the moving frame 63, a connecting seat 65 bolted to the outside of the second moving module 64, a camera seat 66 locked and connected to the upper end of the connecting seat 65, the inside rear side of the connecting seat 65 being slidably connected to the outside of the connecting seat 65, the front side of the camera seat 66 being connected to a CCD camera 67, the external display screen of the CCD camera 67 being connected in place, a lamp holder 68 being locked and connected to the lower end of the connecting seat 65, the inside rear side of the lamp holder 68 being slidably connected to the outside of the connecting seat 65, a developing lamp ring 69 being arranged at the front side of the lamp holder 68, the side of the moving frame 63 away from the first moving module 62 being connected to a guide rail 610, the guide rail 610 being bolted and locked to the upper end of a third support plate 611, wherein the vertical intersection layout of the first moving module 62 and the second moving module 64 is combined with the sliding guide function of the guide rail 610, so that the CCD camera 67 has an X / Y adjustment stroke, and can adapt to the developing detection requirements of magnetic steels of different sizes.

[0037] Specifically, after the product positioning mechanism 5 completes the close contact and jacking of the magnetic steel, the first moving module 62 can drive the moving frame 63 to move longitudinally along the support frame 61, and coarsely adjust to the area above the magnetic steel; then the second moving module 64 drives the connecting seat 65 transversely to realize fine adjustment of the collection position, so that the CCD camera 67 and the developing lamp ring 69 are accurately aligned with the detection area of the developing film 5142, and at the same time, when the moving frame 63 moves longitudinally, the guide rail 610 and the third support plate 611 can guide and support the moving process to ensure the stability of the moving process. The CCD camera 67 and the developing lamp ring 69 are connected to the connecting seat 65 and the camera seat 66 through corresponding sliding connections, so that the detection height of the CCD camera 67 and the developing lamp ring 69 can be flexibly adjusted to eliminate shadow interference and clearly capture the developing image. Subsequently, the captured picture can be transmitted to the display screen, and the magnetic performance parameters of the magnetic steel can be analyzed in real time according to the internal system to determine whether the detected magnetic steel meets the standard.

[0038] Referring to Figures 13-16The stacking mechanism 7 comprises a bottom plate 71 connected to the bottom cabinet 1 at the lower end, a connecting frame 72 fixed to the middle and upper end of the bottom plate 71, a fourth cylinder 73 installed at the upper end of the connecting frame 72, a third butt joint block 74 provided at the top of the fourth cylinder 73, a fifth cylinder 75 installed at both sides of the upper end of the connecting frame 72, a fourth butt joint block 76 provided at the top of the fifth cylinder 75, a second clamping shaft 77 inserted into the upper end of the third butt joint block 74 and the fourth butt joint block 76, and the structure of the second clamping shaft 77 provided at the upper end of the third butt joint block 74 and the fourth butt joint block 76 is consistent with that of the first clamping shaft 526 provided at the top of the first butt joint block 523 and the second butt joint block 525, both of which realize the butt joint limiting of the transfer plate, the fourth supporting plate 78 is bolted to both sides of the upper end of the bottom plate 71 for stable supporting and cooperation, the supporting plate 79 is connected to the upper end of the fourth supporting plate 78, the middle part of the supporting plate 79 is hollow, the fixed strip 710 is fastened to the upper end of both sides of the supporting plate 79, the stop block 711 is rotatably installed inside one side of the fixed strip 710, the unqualified finished product can be assisted and supported to prevent falling during stacking through the blocking cooperation of the stop block 711, the baffle 712 is vertically and quickly connected to the four sides of the upper end of the supporting plate 79, and the modular combination of the supporting plate 79 and the baffle 712 can adapt to different specifications of products, and the rotary stop block 711 limits and supports the materials to ensure the stability of the stacking of unqualified products.

[0039] Specifically, when the detected magnetic steel is determined to be an unqualified product, it will move to the inside of the stacking mechanism 7 along with the conveying belt 4 after the detection activity is completed, that is, opposite to the upper end of the third butt joint block 74 and the fourth butt joint block 76, at this time, the fourth cylinder 73 serves as the main driving force, and the fifth cylinder 75 on both sides serves as the auxiliary power, so that the third butt joint block 74 and the fourth butt joint block 76 will be connected to the transfer plate with unqualified magnetic steel through the second clamping shaft 77 inserted at the upper end, to ensure the stability of the subsequent jacking and stacking, and to avoid the problem of stacking deviation; When the transfer plate with unqualified magnetic steel is jacked and inserted into the hollow part of the supporting plate 79, it will extrude and push the stop blocks 711 provided on both sides, so that the stop blocks 711 will be pre-contracted, and then the jacked transfer plate will be moved into the baffle 712 provided on the four sides of the upper end of the supporting plate 79, at this time, the extruded stop blocks 711 will be reset by their own weight, so that when the transfer plate is pushed into the baffle 712 on the four sides and moves downward for resetting, the transfer plate will be stably stacked and collected between the baffles 712 on the four sides under the limiting and blocking of the stop blocks 711 on both sides, and when a plurality of transfer plates with unqualified magnetic steel are sequentially collected and stacked between the baffles 712 on the four sides, they can be manually taken out in an orderly manner to recover the unqualified magnetic steel and perform the repair and re-determination activity, thereby improving the utilization rate of resources.

[0040] The embodiments of the present application are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, wherein the same parts are denoted by the same reference numerals. Therefore, any equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A magnetic property detection method based on the magnetic development principle of developing film, characterized in that: The steps include: S1. Preparation before testing: Determine the test object, understand the material, specifications, surface condition and other information of the tested product, select appropriate inspection standards according to the product, and prepare necessary inspection tools such as film and visual inspection equipment; S2. Implementation of the testing process: Start the developing testing equipment, adjust the developing film to a suitable testing height from the product to be tested, and at the same time, collect the magnetic developing image of the product on the developing film, and perform repeated testing of the magnetic steel product multiple times and at various positions; S3. Post-test processing: The collected images are transferred to the data analysis and processing unit for pre-processing. After the pre-processing is completed, the characteristic parameters of the image are extracted, and the magnetic performance parameters of the magnetic steel to be tested are calculated using the pre-established mathematical model. The test results are output to the user for further analysis and processing.

2. The magnetic property detection method based on the magnetic development principle of the developing film according to claim 1, characterized in that: The specific steps of step S1 are as follows: S11: Check the working status of the developing equipment: S12: Calibrate parameters of the display film and visual inspection equipment.

3. The magnetic property detection method based on the magnetic development principle of the developing film according to claim 1, characterized in that: The specific steps of step S2 are as follows: S21, selecting appropriate magnetization parameters according to the size and type of the magnetic steel being tested; S22, turning on the main power of the magnetizing device and the developing and detecting device, and opening the interface of each device; S23, take a number of qualified magnetic steel and pour it into the vibration plate, through the vibration plate to enter the magnetization mechanism, after magnetization, the product enters the transfer plate, the transfer plate passes through the conveyor belt to the development and detection equipment inspection position, and the inspection vision equipment performs image acquisition; S24, putting unqualified weak magnetic products in, observing the difference between the qualified and unqualified product images, and extracting the image difference for judgment based on the size of the difference; S25, set the judgment standard, start the software detection function, turn on the vibration plate and magnetizing equipment to automatically load and magnetize, and start detection; S26, pour the untested batch products into the vibration plate, and make sure that the amount of magnets poured in should not exceed 2 / 3 of the capacity of the vibration plate; S27, after the product is magnetized, it enters the developing detection position. According to the set detection parameters, qualified products will automatically flow out when they pass, and the equipment will prompt NG when defective products pass, and the defective products will be rejected and recorded with corresponding pictures.

4. The magnetic property detection method based on the magnetic development principle of the developing film according to claim 3, characterized in that: The development detection equipment in step S22 comprises a base cabinet (1), the upper end of the base cabinet (1) is connected to a cabinet body (2), the front side of the cabinet body (2) is rotatably connected to a cabinet door (3), a conveyor belt (4) is provided on the top of the base cabinet (1), a product positioning mechanism (5) is installed in the middle section of the conveyor belt (4), a visual detection mechanism (6) is provided on the left side of the product positioning mechanism (5), and a stacking mechanism (7) is provided on the right side of the product positioning mechanism (5).

5. The magnetic property detection method based on the magnetic development principle of the developing film according to claim 4, characterized in that: The product positioning mechanism (5) comprises a positioning structure (51) and a lifting structure (52); the positioning structure (51) is installed on the top of the base cabinet (1), and the lifting structure (52) is provided at the lower end of the positioning structure (51).

6. The magnetic property detection method based on the magnetic development principle of the developing film according to claim 5, characterized in that: The positioning structure (51) comprises a first support plate (511), a first cylinder (512) is installed in the middle of the upper end of the first support plate (511), limiting rods (513) are inserted on both sides of the upper end of the first support plate (511), and the upper ends of the first cylinder (512) and the limiting rods (513) are both connected to the clamping plate structure (514).

7. The magnetic property detection method based on the magnetic development principle of the developing film according to claim 6, characterized in that: The clamping plate structure (514) comprises a glass limiting frame (5141), the glass limiting frame (5141) being connected to the first cylinder (512) and the upper end of the limiting rod (513), and a display film (5142) being installed inside the glass limiting frame (5141), the upper end of the display film (5142) being connected to the glass (5143), and the glass (5143) being embedded in the glass limiting frame (5141), and a clamping plate (5144) being installed outside the upper end of the glass limiting frame (5141).

8. The magnetic property detection method based on the magnetic development principle of the developing film according to claim 5, characterized in that: The lifting structure (52) includes a second support plate (521), the lower end of the second support plate (521) is connected to the bottom cabinet (1), a second cylinder (522) is installed in the middle of the upper end of the second support plate (521), the top of the second cylinder (522) is docked with a first docking block (523), third cylinders (524) are installed on both sides of the upper end of the second support plate (521), and a second docking block (525) is provided on the top of the third cylinder (524), and a first clamping shaft (526) is plugged into the top of the first docking block (523) and the second docking block (525).

9. The magnetic property detection method based on the magnetic development principle of the developing film according to claim 4, characterized in that: The visual inspection mechanism (6) includes a support frame (61), the bottom of the support frame (61) is connected to the bottom cabinet (1), the top of the support frame (61) is equipped with a first moving module (62), the top of the first moving module (62) is connected to one side of the moving frame (63), the front side of the upper end of the moving frame (63) is equipped with a second moving module (64), the outside of the second moving module (64) is provided with a connecting seat (65), the upper end of the connecting seat (65) is locked and docked with a camera seat (66), the front side of the camera seat (66) is connected to a CCD camera (67), the lower end of the connecting seat (65) is locked and docked with a lamp seat (68), the front side of the lamp seat (68) is equipped with a developing lamp ring (69), the other side of the moving frame (63) is connected to a guide rail (610), and the guide rail (610) is provided at the upper end of the third support plate (611).

10. The magnetic property detection method based on the magnetic development principle of the developing film according to claim 4, characterized in that: The stacking mechanism (7) comprises a bottom plate (71), the lower end of the bottom plate (71) is connected to the bottom cabinet (1), a connecting frame (72) is fixed to the upper end of the bottom plate (71), a fourth cylinder (73) is installed on the upper end of the connecting frame (72), a third docking block (74) is provided on the top of the fourth cylinder (73), and fifth cylinders (75) are installed on both sides of the upper end of the connecting frame (72), the top of the fifth cylinder (75) is connected to the fourth docking block (76). The upper ends of the third docking block (74) and the fourth docking block (76) are both plugged with a second clamping shaft (77), and the upper ends of the bottom plate (71) are bolted with a fourth support plate (78) on both sides. The upper ends of the fourth support plate (78) are connected to a supporting plate (79), and the upper ends of both sides of the supporting plate (79) are fastened with fixing strips (710), and a stopper (711) is rotatably installed on one side of the fixing strip (710), and baffles (712) are provided on four sides of the upper end of the supporting plate (79).

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