A Coil Processing Device and Processing Method for a Micro Transformer

Abstract

This application relates to the technical field of coil processing equipment for micro-transformers, and specifically discloses a coil processing device and a processing method for micro-transformers, which include a bearing platform, a detection component for detecting coil paint film defects, a sliding component for driving the detection component to move, and a fixing component for fixing the coil. The detection component, the sliding component, and the fixing component are all installed on the bearing platform. Among them, the detection component includes a detection head and a vision camera. A magnetic part is provided on the detection head. When the detection head is screwed into the coil, the magnetic part will apply an alternating magnetic field to the coil, thereby generating eddy currents on the coil, and then detecting the coil paint film defects through the eddy current signals. The vision camera is arranged on the bearing platform, and the vision camera can detect the outer circle of the coil. This application has the effects of detecting the paint film defects on the outer and inner circumferences of the micro-transformer coil, being able to take remedial measures for the defects, effectively reducing production costs, and improving production efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of coil processing equipment for micro-transformers, and in particular to a coil processing device and processing method for micro-transformers. Background Art

[0002] Micro-transformers are widely used in fields such as communication equipment, consumer electronics, and medical equipment, especially in occasions where high-frequency and high-efficiency power conversion and signal transmission are required. The performance of micro-transformers directly affects the working efficiency and stability of equipment, and the processing quality of their coils is one of the key factors determining the performance of transformers. To meet the increasingly complex application requirements, the processing technology requirements of coils are becoming more and more refined. It is necessary not only to ensure that the coils have high electrical performance, but also to ensure their mechanical strength and stability to adapt to various harsh working environments.

[0003] Currently, the conventional processing methods for micro-transformer coils include steps such as winding the coil, dip painting treatment, and drying and curing. Coil winding is mainly carried out manually or mechanically automatically, and the coil is evenly wound around a bobbin or iron core. Sometimes, in the winding process, a bobbin support is not required, and the coil can be directly wound around the iron core. This type of special micro-transformer coil is similar to a filter coil and is more compact in design; after the coil winding is completed, dip painting treatment is usually required to enhance its electrical insulation performance and mechanical strength. During the dip painting process, the surface of the coil will be evenly covered by a layer of insulating paint, and then it is cured by drying.

[0004] However, due to the high winding density and compact structure of micro-transformer coils, it is difficult for the paint film to form a uniform coverage on the inner peripheral side (the side close to the iron core) during the dip painting process, and defects such as paint leakage, cracks, and fissures are likely to occur. At the same time, existing detection means, such as visual inspection or electrical performance inspection, usually can only detect paint film defects on the outer peripheral side of the coil. Due to space limitations and the accuracy limitations of detection equipment, the paint film defects on the inner peripheral side cannot be detected. Such hidden defects may cause problems such as a decrease in insulation performance or short circuit during the operation of the transformer, seriously affecting the service life of the equipment. This limitation makes it difficult for manufacturers to take targeted remedial measures during the production process, resulting in an increase in production costs. Summary of the Invention

[0005] The present application provides a coil processing device and processing method for micro-transformers. While ensuring the identification of paint film defects on the outer peripheral side of the micro-transformer coil, this processing device can also detect paint film defects on the inner peripheral side of the micro-transformer coil, and can take effective remedial measures for different types of defects, effectively reducing the scrap rate and production costs during the production process and improving production efficiency.

[0006] In a first aspect, a coil processing device for a micro-transformer provided by the present application adopts the following technical solutions:

[0007] A coil processing device for a micro-transformer, comprising:

[0008] A carrier table

[0009] A sliding assembly, the sliding assembly includes a support, a sliding seat, a sliding lead screw and a sliding motor. The support is fixedly arranged on the carrier table. A slide rail is fixedly arranged on the support. The sliding seat is slidably arranged on the support through the slide rail. The sliding lead screw is rotatably arranged on the support, and the sliding lead screw is threadedly connected to the sliding seat. The sliding motor is fixedly arranged on the support, and the output end of the sliding motor is fixedly connected to one end of the sliding lead screw;

[0010] A fixing assembly, the fixing assembly includes a base, a fixing mold and a driving member. The base is fixedly arranged on the carrier table, and the base is located at one end of the support in the length direction. The fixing mold is slidably arranged on the base. A controller and a first signal amplifier are arranged on the fixing mold. The controller is electrically connected to the first signal amplifier. The sliding motor is electrically connected to the controller. There are two groups of fixing molds, and the two groups of fixing molds are symmetrically arranged along the length direction of the base. The driving member is arranged on the base, and the driving member can drive the two groups of fixing molds to approach or move away from each other. Each group of fixing molds is provided with a groove for accommodating a coil. When the two groups of fixing molds approach and fit together, the two grooves will combine to form a positioning cavity adapted to the shape of the coil. One end of the positioning cavity is a detection end, and the other end of the positioning cavity is a feeding end. When the coil is fixed in the positioning cavity, the coil is electrically connected to the first signal amplifier;

[0011] Detection component, the detection component is arranged on the bearing table, and the detection component is located on one side of the base close to the support. The detection component includes a detection head and a vision camera. The detection head is arranged on the sliding seat. The detection head is set in a cylindrical shape. A spiral detection groove is formed on the detection head. A first drain pipe is embedded on the detection head. A number of groups of first spray nozzles are fixed on the first drain pipe, and the nozzles of the first spray nozzles are located on the outer peripheral wall of the detection head. A first liquid storage tank is fixed on the rotating disk. The first liquid storage tank is filled with insulating varnish, and a thermosensitive pigment is added to the insulating varnish. A first pressure pump is arranged on the first liquid storage tank. The first pressure pump is electrically connected to the controller; a magnetic part is arranged on the detection head. The detection head and the magnetic part will rotate as the sliding component moves. The detection head can be screwed into the coil. The rotation of the magnetic part will apply an alternating magnetic field to the coil, so that eddy currents are generated on the coil. The controller detects the coil paint film defect through the eddy current signal; when the controller detects a defect in the inner side paint film of the coil according to the eddy current signal in the coil, the controller controls the first pressure pump to start, so as to drive the first spray nozzles to spray insulating varnish for paint repair;

[0012] A support frame is fixed on the bearing table. The vision camera is fixedly connected to the support frame. The vision camera is close to the detection end. The vision camera is erected above the fixed mold through the support frame. When the vision camera detects a defect or color in the paint film on the outer side wall of the coil, targeted paint repair treatment can be carried out on the defect and different color displays.

[0013] By adopting the above technical solution, the positioning cavity for adapting the coil is formed by combining the grooves on the two groups of fixed molds, realizing the precise fixation of the coil, ensuring the stability of the coil during the detection process and the high precision of positioning. The magnetic part can apply an alternating magnetic field to the coil when the detection head is screwed into the coil, causing an eddy current effect on the surface of the coil. Then, the eddy current signal can efficiently and accurately detect the defects of the inner ring paint film of the coil. Especially in the detection of some micro-defects or hidden positions, it has higher sensitivity and accuracy. The spiral detection groove and the first nozzle provided on the detection head can ensure that when the detection head detects a defect on the inner wall of the coil, the detection head can synchronously perform paint replenishment treatment. And a thermosensitive pigment is added to the repaired insulating varnish. At this time, a color change corresponding to the color of the insulating varnish may appear at the corresponding position on the outer ring of the coil, and the depth of the color appearance can reflect the severity of the corresponding defect, enabling the detection of defects on the outer side wall of the coil during subsequent visual inspection, further improving the detection effect. In addition, the detection head also serves as a material taking and placing fixture. After the inner ring is detected, the coil can be detected for the outer ring by the visual camera along with the detection head, ensuring the comprehensive detection of the appearance and paint film of the coil, and improving the usability and operation convenience of the device.

[0014] Preferably, a first drain pipe is embedded in the detection head. A number of groups of first nozzles are fixed on the first drain pipe, and the nozzles of the first nozzles are located on the outer peripheral wall of the detection head. A first liquid storage tank is fixed on the rotating disk. The first liquid storage tank is filled with insulating varnish, and a thermosensitive pigment is added to the insulating varnish. A first pressure pump is arranged on the first liquid storage tank. The first pressure pump is electrically connected to the controller. A ring-shaped temporary storage part is arranged at the end of the detection head far from the base. A ring groove is formed on the temporary storage part. A sealing ring is arranged in the ring groove. The sealing ring is rotatably sleeved on the temporary storage part. One end of the first drain pipe is communicated with the ring groove. A liquid outlet pipe is fixed on the liquid storage tank. One end of the liquid outlet pipe is fixedly connected to the sealing ring. The liquid storage tank is communicated with the ring groove through the liquid outlet pipe. When the controller detects a defect in the inner side paint film of the coil according to the eddy current signal in the coil, the controller controls the first pressure pump to start, so as to drive the first nozzles to spray insulating varnish for paint replenishment.

[0015] By adopting the above technical solution, the temporary storage part and the sealing ring provided on the detection head can ensure that when the detection head rotates, the insulating varnish in the first liquid storage tank can be smoothly supplied to the first drain pipe, improving the processing efficiency and practical operability of the whole device.

[0016] Preferably, a second liquid storage tank is provided on one side of the support frame. A second pressure pump is provided on the second liquid storage tank. The second pressure pump is electrically connected to the controller. A second spray head is provided on the second liquid storage tank. The nozzle of the second spray head faces the support. When the vision camera detects defects and colors on the outer wall paint film of the coil, the controller controls the second pressure pump to start, so that the second spray head sprays paint for local paint repair.

[0017] By adopting the above technical solution, by arranging a second liquid storage tank and its supporting second pressure pump and second spray head on one side of the support frame, effective detection and local paint repair of the outer wall paint film of the coil can be realized. That is, when the vision camera detects defects or color changes in the paint film on the outer wall of the coil, the controller will immediately control the second pressure pump to start, so that the second spray head sprays paint for local paint repair. In this way, not only can the treatment be carried out for specific defect areas to improve the overall quality of the paint film on the coil surface, but also because a thermosensitive pigment is added to the insulating varnish for inner ring paint repair. When the insulating varnish is sprayed onto the defect, the insulating varnish penetrates into the defect. At this time, a color change corresponding to the color of the insulating varnish may appear at the corresponding position on the outer ring of the coil, and the depth of the color appearance can reflect the severity of the corresponding defect. If the color appears deeply, it indicates that the defect at this place is a crack caused by paint leakage; if the color appears shallowly, it indicates that the defect at this place is a crack. While the vision camera detects the outer side defects of the coil, it can also perform targeted paint repair according to the appearance of the outer side color. In this way, both the overall insulation performance and reliability of the coil can be improved, and at the same time, the main types of defects on the inner side of the coil can be judged based on this, so as to improve the previous dip painting treatment based on this, thereby avoiding the occurrence of similar defect problems in subsequent production, and further enhancing the reliability and production quality of the micro-transformer coil processing as a whole.

[0018] Preferably, a scraper is further provided on the support frame. The scraper is located below the second liquid storage tank. The scraper is fixedly connected to the support frame. The side of the scraper away from the support frame can be in contact with the coil. A paint discharge pipe is fixedly provided on the second liquid storage tank. The end of the paint discharge pipe away from the second liquid storage tank is provided with a paint outlet. An electromagnetic valve is provided on the paint discharge pipe. The electromagnetic valve is electrically connected to the controller. The paint outlet is located on the surface where the scraper is in contact with the coil, and the paint outlet faces the detection head.

[0019] By adopting the above technical solution, the scraper is arranged to abut against the outer side of the coil. The scraper is provided with a paint outlet, and the paint outlet can repair the minor defects on the outer side of the coil. The scraper can scrape off the excess varnish on the coil, so as to ensure the uniformity of the paint film thickness after repair. In addition, a solenoid valve is arranged on the paint discharge pipe, so that when the detection camera detects defects of different degrees, different targeted remedial measures can be taken, which improves the reliability and production quality of the processing of the micro-transformer coil as a whole.

[0020] Preferably, the sliding assembly further includes a steering member, and the steering member includes a steering rack and a steering gear ring. The steering rack is fixedly arranged on the bearing table, and the steering rack is located on one side of the width direction of the support. A rotating disk is rotatably arranged on the sliding seat. A first support plate and a second support plate are fixedly arranged on the rotating disk. The first support plate and the second support plate are arranged in parallel at intervals. One end of the detection head is rotatably connected to the first support plate. The steering gear ring is coaxially sleeved on the rotating disk, and the steering gear ring meshes with the steering rack. When the sliding seat moves on the support, the steering gear ring can drive the detection head to deflect.

[0021] By adopting the above technical solution, the steering gear ring meshes with the steering rack, so that the detection head can deflect at an angle during the movement of the sliding seat along the guide rail. The purpose of this setting is, firstly, to facilitate the discharging of the coil after subsequent detection and paint replenishment, and secondly, to increase the moving distance between the detection head and the coil on the overall same sliding path. Because during this process, the coil and the magnetic part will continuously rotate relative to each other. According to the electromagnetic induction principle and Joule's law, the coil itself will also generate heat, so as to realize the heating and curing treatment of the repaired insulating varnish. Increasing the moving distance increases the heating and curing time, and thus ensures the quality of the repaired paint film.

[0022] Preferably, a discharging assembly is provided on the bearing platform, and the discharging assembly includes a discharging plate, a lifting hydraulic cylinder and a driving hydraulic cylinder. A placement groove is opened on the discharging plate along the length direction, and limiting air bags are provided on both sides of the placement groove. A second signal amplifier is provided on the discharging plate, and the second signal amplifier is electrically connected to the controller. A support rod is provided at one end of the discharging plate, and one end of the support rod is rotatably connected to the discharging plate, and the other end of the support rod is fixedly connected to the bearing platform. The lifting hydraulic cylinder is provided at one end of the discharging plate away from the support rod, and the protruding end of the lifting hydraulic cylinder is rotatably connected to the discharging plate. The fixed end of the lifting hydraulic cylinder is fixedly connected to the bearing platform, the driving hydraulic cylinder is fixedly arranged on the bearing platform, and the driving hydraulic cylinder is located on one side of the support, the fixed end of the driving hydraulic cylinder is respectively connected with the fixed end of the lifting hydraulic cylinder and the limiting airbag, and a toggle part is fixed on the slide; when the slide slides on the support, the toggle part can squeeze the protruding end of the driving hydraulic cylinder, so that the lifting hydraulic cylinder lifts one end of the discharge plate, and at the same time the limiting airbag is inflated to clamp the coil, and the coil is electrically connected to the second signal amplifier, thereby realizing re-inspection and automatic discharge of the coil after the detection is completed.

[0023] By adopting the above technical solution, the discharge plate can be lifted to a preset height after the coil is transported to the right place through the jacking action of the lifting hydraulic cylinder, and the discharge plate can support the coil. At the same time, the limit airbag arranged on the discharge plate can effectively limit and clamp the coil to ensure that the coil remains stable during the detachment process of the detection head, which can reduce the error or damage that may be caused by improper position, and can also achieve automatic detachment with the help of the detection head. In addition, when the toggle part completely squeezes the extended end of the driving hydraulic cylinder, the coil is just stably clamped, the discharge plate also supports the coil, and the coil is also electrically connected to the second signal amplifier. When the detection head is detached from the coil, the second signal amplifier can re-inspect the coil after the paint repair process through the electromagnetic induction principle. When the slide seat slides away, the limit airbag releases the clamping of the coil, and the discharge plate tilts to achieve automatic discharge. The sliding of the slide seat cooperates with the extrusion of the toggle part, making the entire discharge process more efficient and simple to operate, reducing the necessity of manual intervention, thereby improving production efficiency and product quality. Therefore, the setting of the discharge component not only improves the degree of automation of coil processing, but also effectively reduces the labor cost and potential operational risks in the production process.

[0024] Preferably, the magnetic member includes a rotating shaft and magnetic blocks. An installation cavity is provided on the detection head. The rotating shaft is rotatably connected to the detection head coaxially. The magnetic blocks are located in the installation cavity. There are multiple groups of magnetic blocks, and the multiple groups of magnetic blocks are arranged circumferentially on the rotating shaft with the rotating shaft as the center. And the magnetic poles of two adjacent groups of magnetic blocks on the rotating shaft are opposite. A transmission member is provided at one end of the rotating shaft. The transmission member can act on the detection head and the rotating shaft. When the sliding seat moves on the support, the transmission member can drive the detection head and the rotating shaft to rotate, and the detection head and the rotating shaft rotate in opposite directions.

[0025] By adopting the above technical solution, when the sliding seat moves on the support, the rotating shaft and the detection head can rotate in opposite directions and the magnetic poles of two adjacent magnetic blocks on the rotating shaft are opposite. This setting can not only enhance the application of the alternating magnetic field to the coil, increase the comprehensive detection ability of the paint film defects inside and outside the coil, but also effectively improve the eddy current signal generated on the surface of the coil and the subsequent heating and curing of the paint repair position by using the Joule heat generated by electromagnetic induction, so that the detection of the paint film defects is more accurate and reliable, and further improve the production quality of the entire micro-transformer coil processing.

[0026] Preferably, the transmission member includes a detection bevel gear, an auxiliary heating bevel gear, a transmission bevel gear, a transmission shaft and a turbine. A connecting portion is fixedly provided at one end of the detection head away from the detection end. The connecting portion is rotatably connected to the first support plate. The detection bevel gear is coaxially fixedly provided on the connecting portion. One end of the rotating shaft passes through the connecting portion and is rotatably connected to the second support plate. The auxiliary heating bevel gear is fixedly connected to the end of the rotating shaft away from the detection head. The transmission bevel gear meshes with both the detection bevel gear and the auxiliary heating bevel gear, and the transmission bevel gear is located between the detection bevel gear and the auxiliary heating bevel gear. The turbine is provided on the sliding seat. The turbine meshes with the sliding lead screw. An installation plate is fixedly provided on the first support plate. The transmission shaft rotatably passes through the installation plate. An avoidance hole is provided on the rotating disc. One end of the transmission shaft is fixedly connected to the transmission bevel gear. The other end of the transmission shaft sequentially passes through the avoidance hole and the sliding seat and is coaxially fixedly connected to the turbine.

[0027] By adopting the above technical solution, the use of multiple groups of gear transmissions realizes driving the detection head to rotate during the sliding process of the sliding seat, and at the same time enables the detection head and the magnetic member to rotate relative to each other in opposite directions. It can not only realize the automatic screwing of the detection head into and out of the coil, but also improve the intensity of the alternating magnetic field applied by the magnetic member to the coil, effectively increase the coverage range of the detection head on the coil, thereby improving the detection accuracy of the coil surface defects and ensuring the reliability of the detection results.

[0028] Preferably, the driving member includes a driving motor and a bidirectional lead screw. An installation portion is provided on the base. The driving motor is fixedly provided on the installation portion. The driving motor is electrically connected to the controller. The bidirectional lead screw is rotatably provided on the installation portion. There are two groups of installation portions. The bidirectional lead screw is erected on the base through the two groups of installation portions. The two fixing molds are respectively located at both ends of the bidirectional lead screw. Each fixing mold is threadedly connected to the bidirectional lead screw.

[0029] By adopting the above technical solution, the provided driving motor and bidirectional lead screw can realize the automatic adjustment of the fixing mold, enabling it to automatically approach or move away according to the actual requirements of the coil during the processing. At the same time, it can also make the movement of the fixing mold more precise, effectively ensuring the position stability of the coil during the processing, thereby reducing the processing error caused by position deviation and guaranteeing the processing quality of the coil.

[0030] On the other hand, the present application provides a processing method for a coil processing device applicable to a micro-transformer, including the following steps:

[0031] S1. Place the coil after dipping treatment between the two fixing molds, start the motor to drive the bidirectional lead screw to rotate, and make the two fixing molds approach and fit each other, and the coil is fixed in the positioning cavity;

[0032] S2. Start the sliding lead screw to drive the sliding seat to slide towards the detection end. The detection head gradually screws into the coil, and the magnetic block rotates accordingly. Eddy currents are generated on the surface of the coil through the principle of electromagnetic induction. The first signal amplifier receives the eddy current signal in the coil;

[0033] S3. When the eddy current signal shows abnormal fluctuations, the controller controls the first pressure pump to start, and the first nozzle sprays paint. This process continues until the eddy current signal no longer shows abnormal fluctuations, and the controller controls the first pressure pump to close;

[0034] S4. When the detection head is completely screwed into the coil, the bidirectional lead screw drives the two fixing molds to move away from each other, and the coil slides in the direction away from the detection end along with the detection head. The vision camera will detect whether there are defects and color leakage on the outer wall paint film of the coil, and at the same time, the scraper starts to contact the outer side of the coil;

[0035] S5. When the vision camera detects defects and colors on the outer wall paint film of the coil, that is, when the vision camera detects that the color appears darker at a certain place, it indicates that the defect at this place is a crack caused by paint leakage. At this time, the controller will control the second pressure pump to start and the solenoid valve to close, and the second nozzle will perform local paint repair on this place. The scraper will scrape off the excess clear paint and scrape the repaired place flat; when the vision camera detects that the color appears lighter at a certain place, it indicates that the defect at this place is a crack. At this time, the controller will control the solenoid valve to open, and use the scraper and the paint outlet to perform local paint repair on this place. The scraper will scrape off the excess clear paint and scrape the repaired place flat;

[0036] S6. After the visual inspection is completed, the controller controls the sliding motor to accelerate, and the slide continues to slide away from the detection end. The steering rack and the steering gear ring are meshed, and the detection head drives the coil to deflect 180 degrees. During this period, the magnetic block heats the coil and solidifies the insulating varnish through the principle of electromagnetic induction and Joule's law.

[0037] S7. As the slide slides away from the detection end, the toggle part squeezes the protruding end of the driving hydraulic cylinder, and the discharge plate gradually rises until it is horizontal. At the same time, the coil is limited by the limit airbag on the placement slot, and then the slide slides toward the detection end. At the same time as the detection head rotates out of the coil, the toggle part releases the squeeze on the protruding end of the driving hydraulic cylinder, and the discharge plate tilts to one side to realize automatic discharge of the coil.

[0038] By adopting the above technical scheme, the method utilizes the dual protection mechanism of eddy current monitoring and visual inspection in the whole process, timely discovers and repairs problems, effectively avoids electrical failures caused by paint film defects, and improves the safety of equipment and operations. At the same time, standardized processing steps are used to ensure that each batch of coil processing can meet the same quality standards, realize the efficiency and automation of micro-transformer coil processing, reduce manual intervention, improve processing efficiency and consistency, and enhance product consistency and market competitiveness.

[0039] In summary, the present application includes at least one of the following beneficial technical effects:

[0040] 1. The grooves on the two sets of fixed molds are combined to form a positioning cavity that fits the coil, so as to achieve precise fixing of the coil and ensure the stability of the coil during the detection process and the high precision of positioning. When the detection head is screwed into the coil, the magnetic part can apply an alternating magnetic field to the coil, so that an eddy current effect is generated on the surface of the coil. The eddy current signal can then be used to efficiently and accurately detect the defects of the paint film on the inner circle of the coil, especially in the detection of some minor defects or hidden positions, with higher sensitivity and accuracy. At the same time, the setting of the spiral detection groove on the detection head can ensure that the contact between the detection head and the coil is more uniform, further improving the detection effect. At the same time, the detection head also takes into account the role of the material picking and discharging fixture. After the inner circle is detected, the coil can be detected by the visual camera along with the detection head for the outer circle, ensuring the comprehensive detection of the coil appearance and paint film, and improving the ease of use and operation of the device.

[0041] 2. The first liquid discharge pipe, the first pressure pump and the first nozzle arranged on the detection head can automatically touch up the paint when the controller detects defects in the inner circle of the coil according to the eddy current signal, thereby improving the overall quality of the micro transformer coil and reducing the product defect rate caused by paint film defects, thereby reducing production costs and resource waste. At the same time, the controller is used to control the first nozzle to touch up the paint, which can not only improve the degree of automation of the processing and reduce the complexity and labor intensity of manual operation, but also effectively avoid the uneven thickness of the paint film caused by subsequent touch-up operations, thereby improving the overall insulation performance and reliability of the coil; in addition, the temporary storage part and the sealing ring arranged on the detection head can ensure that when the detection head rotates, the insulating varnish in the first liquid storage tank can be smoothly supplied to the first liquid discharge pipe, thereby improving the processing efficiency and practical operability of the entire device;

[0042] 3. The second liquid storage tank, the second nozzle, and the scraper arranged on the support frame can be used to effectively detect and partially touch up the paint film on the outer wall of the coil. That is, when the visual camera detects defects or color changes in the paint film on the outer wall of the coil, the second nozzle and the scraper are used to perform local touch up. This not only allows treatment of specific defective areas and improves the overall quality of the paint film on the surface of the coil, but also because thermosensitive pigments are added to the insulating varnish used for touch up of the inner ring, when the insulating varnish is sprayed on the defect, the insulating varnish will penetrate into the defect. At this time, the corresponding part of the outer ring of the coil may have a color change corresponding to the color of the insulating varnish, and the depth of the color can reflect the severity of the corresponding defect. If the color is deep, it indicates that the defect is If the defect is caused by paint leakage, the controller will control the second pressure pump to start, the solenoid valve to close, and the second nozzle to perform local paint repair on the area; if the color is light, it indicates that the defect is a crack. At this time, the controller will control the solenoid valve to open, and use the scraper and the paint outlet to perform local paint repair on the area; in this way, the visual camera can detect the defects on the outside of the coil and perform targeted paint repair according to the appearance of the outside color, which not only improves the overall insulation performance and reliability of the coil, but also can judge the type of defects on the inside of the coil, so as to improve the previous step of immersion paint treatment based on this, so as to avoid the occurrence of similar defects in subsequent production, thereby improving the reliability and production quality of micro transformer coil processing as a whole;

[0043] 4. The discharge plate is lifted by the lifting hydraulic cylinder and can be lifted to a preset height after the coil is delivered to the place. The discharge plate can support the coil. At the same time, the limit airbag arranged on the discharge plate can effectively limit and clamp the coil to ensure that the coil remains stable during the separation process of the detection head, which can reduce the error or damage caused by improper position and can also realize automatic separation with the help of the detection head. In addition, when the toggle part completely squeezes the extended end of the driving hydraulic cylinder, the coil is stably clamped, the discharge plate also supports the coil, and the coil will also be connected with the second signal amplifier. Electrical connection, when the detection head is separated from the coil, the second signal amplifier can re-inspect the coil after the repainting treatment through the electromagnetic induction principle. When the slide slides away, the limit airbag releases the clamping of the coil, and the discharge plate tilts to realize automatic discharge. The sliding of the slide and the extrusion of the toggle part make the whole discharge process more efficient and simple to operate, reducing the necessity of manual intervention, thereby improving production efficiency and product quality. Therefore, the setting of the discharge component not only improves the automation degree of coil processing, but also effectively reduces the labor cost and potential operation risks in the production process;

[0044] 5. When the slide moves on the support, the shaft and the detection head can rotate in opposite directions and the magnetic poles of the two adjacent magnetic blocks on the shaft are opposite. This setting can not only enhance the application of the alternating magnetic field to the coil and increase the comprehensive detection capability of the paint film defects inside and outside the coil, but also effectively improve the eddy current signal generated on the coil surface and the subsequent heating and curing of the paint touch-up position by the Joule heat generated by electromagnetic induction, thereby making the detection of paint film defects more accurate and reliable, thereby improving the production quality of the entire micro-transformer coil processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 It is a schematic diagram of the overall structure of the coil processing device of the micro transformer in the embodiment of the present application.

[0046] Figure 2 It is a schematic diagram of the overall structure of the fixing component in the embodiment of the present application.

[0047] Figure 3 It is a schematic diagram of the half-section structure of the detection component in the embodiment of the present application.

[0048] Figure 4 yes Figure 2 Enlarged schematic diagram of part A.

[0049] Figure 5 It is a schematic diagram of the overall structure of the detection component in the embodiment of the present application.

[0050] Figure 6 It is a schematic diagram of the overall structure of the discharging assembly in the embodiment of the present application.

[0051] Reference numerals: 1, bearing platform; 11, supporting frame;

[0052] 2. Sliding assembly; 21. Support; 211. Slide rail; 22. Sliding seat; 221. Rotating plate; 2211. Avoidance hole; 222. First support plate; 2221. Mounting plate; 223. Second support plate; 224. Toggle part; 225. Avoidance cavity; 23. Sliding screw rod; 24. Sliding motor; 25. Steering member; 251. Steering rack; 252. Steering gear ring;

[0053] 3. Fixed assembly; 31. Base; 311. Mounting part; 32. Fixed mold; 321. Positioning cavity; 3211. Detection end; 3212. Feeding end; 33. Driving member; 331. Driving motor; 332. Bidirectional screw rod; 34. Controller; 35. First signal amplifier;

[0054] 4. Detection assembly; 41. Detection head; 411. Detection slot; 412. First liquid discharge pipe; 413. First nozzle; 414. Temporary storage; 415. Ring groove; 416. Sealing ring; 417. Mounting cavity; 418. Connecting part; 42. Visual camera; 43. Magnetic member; 431. Rotating shaft; 432. Magnetic block; 44. First liquid storage box; 441. First pressure pump; 442. Liquid outlet pipe; 45. Second liquid storage box; 451. Second pressure pump; 452. Second nozzle; 453. Paint discharge pipe; 454. Paint outlet; 455. Solenoid valve; 46. Scraper; 47. Transmission member; 471. Detection bevel gear; 472. Auxiliary heating bevel gear; 473. Transmission bevel gear; 474. Transmission shaft; 475. Turbine;

[0055] 5. Discharging assembly; 51. Discharging plate; 511. Placement slot; 512. Support rod; 52. Lifting hydraulic cylinder; 53. Driving hydraulic cylinder; 54. Second signal amplifier; 55. Limiting airbag; 56. Connecting pipe;

[0056] 6. Loading assembly; 61. Loading rack; 62. Loading clamp; 611. Clamping seat; 612. Guide rail. DETAILED DESCRIPTION

[0057] The following is combined with Figures 1-6 This application is described in further detail.

[0058] The embodiment of the present application discloses a coil processing device for a micro transformer.

[0059] Reference Figure 1, The coil processing device and processing method of the micro-transformer include a carrying platform 1, a feeding component 6, a fixing component 3, a sliding component 2, a detecting component 4, and a discharging component 5. The feeding component 6, the fixing component 3, the detecting component 4, the sliding component 2, and the discharging component 5 are all installed on the carrying platform 1. The feeding component 6 is located on one side of the fixing component 3. The detecting component 4 and the sliding component 2 are located on the other side of the fixing component 3. The detecting component 4 is located between the sliding component 2 and the fixing component 3. The discharging component 5 is arranged on the side of the sliding component 2 away from the fixing component 3.

[0060] The feeding component 6 can place the coil after dipping treatment into the fixing component 3; the fixing component 3 can be used to fix the coil and provide a relatively enclosed environment for painting the inner circle of the coil; the sliding component 2 can realize the transfer and blanking of the coil after detection; the detecting component 4 can conduct an overall detection on the paint film of the coil after dipping treatment and perform targeted painting treatment; the discharging component 5 can automatically remove the coil from the detecting component 4 and automatically convey the coil away.

[0061] Refer to Figure 1 and Figure 2 , the feeding component 6 includes a feeding frame 61, a clamping seat 611, and a feeding jaw 62. The feeding frame 61 is fixedly arranged on the carrying platform 1. A guiding rail 612 and a linear driving member are arranged on the feeding frame 61. The clamping seat 611 is slidably arranged on the feeding frame 61 through the guiding rail 612. The feeding jaw 62 is fixedly arranged on the clamping seat 611. In the embodiment of the present application, the linear driving member can be set as a cylinder, and the feeding jaw 62 is set as a pneumatic jaw. The extending end of the linear driving member is fixedly connected to the clamping seat 611. Of course, in other embodiments of the present application, the linear driving member can also be set as a hydraulic cylinder or other devices that can realize linear displacement driving. The linear driving member is not shown in the explanatory drawings of the embodiment of the present application.

[0062] Refer to Figure 1 , Figure 2 and Figure 3 , in the embodiment of the present application, one end of the micro-transformer coil is the input end, and the other end of the micro-transformer coil is the output end. The fixing component 3 includes a base 31, a fixing mold 32, a driving member 33, a controller 34, and a first signal amplifier 35. The driving member 33 includes a driving motor 331 and a bidirectional lead screw 332. The base 31 is fixedly arranged on the carrying platform 1. A sliding groove is formed on the base 31. A sliding block is fixedly arranged on the fixing mold 32. The sliding block is slidably connected to the sliding groove. The fixing mold 32 is slidably arranged on the base 31 through the sliding block. There are two groups of fixing molds 32, and the two groups of fixing molds 32 are symmetrically arranged along the length direction of the base 31. Each group of fixing molds 32 is provided with a groove for accommodating a part of the coil. The sliding block and the sliding groove are not shown in the explanatory drawings of the embodiment of the present application.

[0063] The base 31 is provided with mounting parts 311. There are two groups of mounting parts 311, and the two groups of mounting parts 311 are symmetrically arranged along the length direction of the base 31. The driving motor 331 is fixedly arranged on the mounting part 311 on any one side of the base 31. One end of the bidirectional lead screw 332 is rotatably connected to the mounting part 311. The bidirectional lead screw 332 is mounted on the base 31 through the two groups of mounting parts 311. The two fixing molds 32 are respectively located at both ends of the bidirectional lead screw 332. Each group of fixing molds 32 is threadedly connected to the bidirectional lead screw 332. The output end of the driving motor 331 is fixedly connected to one end of the bidirectional lead screw 332. The driving motor 331 can drive the bidirectional lead screw 332 to rotate, so that the two fixing molds 32 approach or move away from each other.

[0064] When the two fixing molds 32 approach and fit together, the two grooves will combine to form a positioning cavity 321 adapted to the shape of the coil. One end of the positioning cavity 321 is set as the detection end 3211, and the other end of the positioning cavity 321 is set as the feeding end 3212.

[0065] The controller 34 and the first signal amplifier 35 are both fixedly arranged on the fixing mold 32. Since the micro-transformer itself has a small size, a high coil winding density, and a compact structure, the first signal amplifier 35 is required to receive and amplify the detection electrical signal generated inside the coil due to the detection component 4. The driving motor 331 and the first signal amplifier 35 are both electrically connected to the controller 34. Connection contacts electrically connected to the first signal amplifier 35 are arranged in the grooves of each group of fixing molds 32. When the coil is fixed in the positioning cavity 321, the input end and the output end of the coil can be electrically connected to the first signal amplifier 35 through the connection contacts.

[0066] Refer to Figure 4 In the embodiment of the present application, the sliding assembly 2 includes a support 21, a sliding seat 22, a rotating disc 221, a sliding lead screw 23, a sliding motor 24, and a steering member 25. The steering member 25 includes a steering rack 251 and a steering gear ring 252. The support 21 is fixedly arranged on the bearing table 1. The support 21 is located on the side of the base 31 close to the detection end 3211. A slide rail 211 is fixedly arranged on the support 21. The sliding seat 22 is slidably arranged on the support 21 through the slide rail 211. A rotating part is fixedly arranged on the sliding seat 22. A rotating groove is formed on the rotating disc 221. The rotating part is rotatably connected to the rotating groove. The rotating disc 221 is rotatably arranged on the sliding seat 22 through the rotating part. The sliding lead screw 23 is rotatably arranged on the support 21, and the sliding lead screw 23 is threadedly connected to the sliding seat 22. The sliding motor 24 is fixedly arranged on the support 21. The output end of the sliding motor 24 is fixedly connected to one end of the sliding lead screw 23. The sliding motor 24 is electrically connected to the controller 34. The controller 34 can control the rotation speed of the sliding motor 24. The rotating part and the rotating groove are not shown in the explanatory drawings of the embodiment of the present application.

[0067] The steering rack 251 is fixedly arranged on the bearing platform 1. The steering rack 251 is located on one side of the width direction of the support 21, and the steering rack 251 is closer to the discharging assembly 5. The steering gear ring 252 is coaxially and fixedly sleeved on the rotating disk 221. The steering gear ring 252 meshes with the steering rack 251. When the sliding seat 22 moves on the support 21, the steering gear ring 252 can drive the rotating disk 221 to deflect.

[0068] Referring to Figure 3 、 Figure 4 and Figure 5 In the embodiment of the present application, the detection assembly 4 includes a detection head 41, a magnetic member 43, a first liquid storage tank 44, a second liquid storage tank 45, a scraping plate 46, a transmission member 47 and a vision camera 42. The detection head 41 is arranged in a cylindrical shape, and a spiral detection groove 411 is formed on the detection head 41. On the surface of the rotating disk 221 facing away from the sliding seat 22, a first support plate 222 and a second support plate 223 are fixedly arranged. The first support plate 222 and the second support plate 223 are arranged in parallel at intervals. One end of the detection head 41 far from the detection end 3211 is fixedly provided with a connecting portion 418, and the connecting portion 418 is rotatably connected with the first support plate 222. The detection head 41 is rotatably arranged on the rotating disk 221 through the connecting portion 418.

[0069] A first drain pipe 412 is embedded in the detection head 41. The first drain pipe 412 is arranged as a spiral pipe, and the pitch is the same as the coil pitch. A plurality of groups of first nozzles 413 are fixedly arranged on the first drain pipe 412, and the nozzles of the first nozzles 413 are located on the outer peripheral wall of the detection head 41. Multiple groups of nozzles are circumferentially spirally distributed on the detection head 41. A first liquid storage tank 44 is fixedly arranged on the rotating disk 221. The first liquid storage tank 44 is filled with insulating varnish. A thermosensitive pigment is added to the insulating varnish filled in the first liquid storage tank 44. The color of the thermosensitive pigment will gradually fade until there is no color after being heated.

[0070] The magnetic member 43 includes a rotating shaft 431 and a magnetic block 432. An installation cavity 417 is formed inside the detection head 41. The rotating shaft 431 rotatably penetrates through the detection head 41 coaxially. The magnetic block 432 is located in the installation cavity 417. A plurality of groups of magnetic blocks 432 are arranged. The plurality of groups of magnetic blocks 432 are circumferentially arranged on the rotating shaft 431 with the rotating shaft 431 as the center, and the magnetic poles of two adjacent groups of magnetic blocks 432 on the rotating shaft 431 are opposite. One end of the rotating shaft 431 close to the first support plate 222 extends out of the connecting portion 418 and is rotatably connected with the second support plate 223.

[0071] A first liquid storage tank 44 is provided with a first pressure pump 441. The first pressure pump 441 is electrically connected to the controller 34. One end of the detection head 41 away from the base 31 is provided with an annular temporary storage part 414. A ring groove 415 is formed in the temporary storage part 414. A sealing ring 416 is arranged in the ring groove 415. The sealing ring 416 is rotatably sleeved on the temporary storage part 414. One end of the first drain pipe 412 communicates with the ring groove 415. A liquid outlet pipe 442 is fixedly arranged on the first liquid storage tank 44. One end of the liquid outlet pipe 442 is fixedly connected to the sealing ring 416. The first liquid storage tank 44 communicates with the ring groove 415 through the liquid outlet pipe 442.

[0072] The transmission part 47 includes a detection bevel gear 471, an auxiliary heating bevel gear 472, a transmission bevel gear 473, a transmission shaft 474 and a turbine 475. The detection bevel gear 471 is coaxially and fixedly arranged on the connecting part 418, and the detection bevel gear 471 is located on the side of the first support plate 222 away from the detection head 41. The auxiliary heating bevel gear 472 is fixedly connected to one end of the rotating shaft 431 away from the detection head 41. The transmission bevel gear 473 meshes with both the detection bevel gear 471 and the auxiliary heating bevel gear 472, and the transmission bevel gear 473 is located between the detection bevel gear 471 and the auxiliary heating bevel gear 472. An avoidance cavity 225 for installing the turbine 475 is formed in the sliding seat 22. The turbine 475 is arranged in the avoidance cavity 225. The turbine 475 meshes with the sliding lead screw 23. An installation plate 2221 is fixedly arranged on the first support plate 222. The transmission shaft 474 rotatably penetrates through the installation plate 2221. An avoidance hole 2211 is formed in the rotating disc 221. One end of the transmission shaft 474 is fixedly connected to the transmission bevel gear 473. The other end of the transmission shaft 474 sequentially passes through the avoidance hole 2211 and the sliding seat 22 and extends into the avoidance cavity 225 to be coaxially and fixedly connected to the turbine 475.

[0073] When the sliding seat 22 moves on the support 21, the sliding lead screw 23 drives the turbine 475 to rotate. The turbine 475 makes the detection head 41 and the rotating shaft 431 rotate through the transmission shaft 474, and the detection head 41 and the rotating shaft 431 rotate in opposite directions.

[0074] When starting the detection, the controller 34 controls the output end of the sliding motor 24 to rotate at a slower speed. The detection head 41 screws into the coil from the detection end 3211. The magnetic member 43 rotates and applies an alternating magnetic field to the coil. Since the coil itself is a conductor, according to the principle of electromagnetic induction, when a conductor is in an alternating magnetic field, eddy currents, that is, induced currents, will be generated on the conductor. The first signal amplifier 35 can receive these eddy current signals. The paint film on the surface of the coil will directly affect the intensity and distribution of the eddy currents. For example, when there is a lack of paint film in a local area of the coil, the insulation of the coil becomes poor, and the signal intensity flow path of the eddy currents will suddenly fluctuate abnormally. The controller can detect whether there are defects in the coil paint film according to the signal fluctuation changes feedback by the first signal amplifier 35. In addition, when the sliding seat 22 just slides to one end of the slide rail 211 close to the base 31, the detection head 41 just completely screws into the coil.

[0075] During this period, if there are defects such as paint leakage or cracks in the inner circle of the coil, the eddy current signals generated on the surface of the coil will fluctuate. The controller 34 will control the first pressure pump 441 to start, driving the first spray head 413 to spray insulating varnish for paint repair until the subsequent first signal amplifier 35 no longer receives abnormal fluctuations of the eddy current signals, and the controller 34 controls the first pressure pump 441 to close. Since the coil is located in the positioning cavity 321 at this time, and the positioning cavity 321 is a relatively closed cavity, the insulating varnish sprayed by the pressure pump itself will have a certain pressure. Therefore, once the insulating varnish is sprayed on the defect, the insulating varnish will penetrate into the defect, and at this time, a color change corresponding to the color of the insulating varnish will appear at the corresponding position on the outer circle of the coil. The depth of the color appearance can reflect the severity of the corresponding defect. If the color appears deep, it indicates that the defect at this place is a crack caused by paint leakage; if the color appears light, it indicates that the defect at this place is a crack.

[0076] A support frame 11 is fixedly installed on the carrier table 1. The vision camera 42 is fixedly connected to the support frame 11. The vision camera 42 is close to the detection end 3211. The vision camera 42 is installed above the fixed mold 32 through the support frame 11. The second liquid storage tank 45 is arranged on one side of the support frame 11. A second pressure pump 451 is arranged on the second liquid storage tank 45. The second pressure pump 451 is electrically connected to the controller 34. A second spray head 452 is arranged on the second liquid storage tank 45. The nozzle of the second spray head 452 is directed at the support 21. The vision camera 42 can detect defects in the paint film on the outer side wall of the coil.

[0077] More specifically, after the detection head 41 is fully screwed into the coil, the controller 34 controls the driving motor 331 to rotate, and the bidirectional lead screw 332 controls the two groups of fixed molds 32 to move away from each other. After the fixed molds 32 are opened in place, the sliding motor 24 is started to drive the sliding seat 22 to slide away from the base 31. At this time, the controller 34 controls the slow rotation of the sliding lead screw 23, so that the detection head 41 slowly rotates and passes under the vision camera 42. When the vision camera 42 detects a defect or color on the paint film on the outer wall of the coil, the controller 34 will control the second pressure pump 451 to start, and the second spray head 452 will spray paint for local paint repair. When the detection head 41 is out of the shooting range of the vision camera 42, the controller 34 controls the sliding motor 24 to increase the rotation speed. As the sliding seat 22 gradually slides away from the base 31, the steering gear ring 252 meshes with the steering rack 251, so that the detection head 41 deflects 180 degrees.

[0078] In addition, when the rotation speed of the sliding motor 24 increases, the relative rotation between the detection head 41 and the rotating shaft 431 also increases. At this time, the alternating magnetic field where the coil is located changes violently. According to Joule's law Q = I^2Rt (heat is proportional to the square of the current, resistance, and time), the coil itself will quickly heat up, which can also accelerate the rapid curing of the paint film after the coil is repaired when the detection head 41 changes direction.

[0079] The scraping plate 46 is arranged on the support frame 11. The scraping plate 46 is located below the second liquid storage tank 45, and the scraping plate 46 is located on the side of the vision camera 42 away from the fixed mold 32. One side of the scraping plate 46 is fixedly connected to the support frame 11, and the side of the scraping plate 46 away from the support frame 11 can be in contact with the coil. A paint discharge pipe 453 is fixedly arranged on the second liquid storage tank 45. One end of the paint discharge pipe 453 away from the second liquid storage tank 45 is provided with a paint outlet 454. An electromagnetic valve 455 is arranged on the paint discharge pipe 453, and the electromagnetic valve 455 is electrically connected to the controller 34. The paint outlet 454 is located on the surface of the scraping plate 46 in contact with the coil, and the paint outlet 454 is directly opposite to the detection head 41.

[0080] There are two groups of paint outlets 454, and the two groups of paint outlets 454 are arranged in a row along the width direction of the scraping plate 46. Each group of paint outlets 454 is embedded with a ball. When the scraping plate 46 is in contact with the outer side of the coil, the coil will squeeze the ball, and as the coil rotates continuously, the ball will also rotate continuously. The clear paint in the paint discharge pipe 453 will be smeared on the defective part of the coil along with the rolling of the ball. At the same time, the scraping plate 46 is in contact with the coil, and the scraping plate 46 will scrape off the excess clear paint, so as to ensure the uniformity of the paint film thickness. The balls are not shown in the accompanying drawings of the specification.

[0081] Refer to Figure 6The discharging assembly 5 includes a discharging plate 51, a lifting hydraulic cylinder 52, a driving hydraulic cylinder 53, a second signal amplifier 54, a limiting airbag 55 and a connecting pipe 56. The discharging plate 51 is arranged at the end of the support 21 away from the base 31. A placement groove 511 is opened on the discharging plate 51 along the length direction. Limiting airbags 55 are arranged on both sides of the placement groove 511. The limiting airbags 55 are arranged in a strip shape, and the length of the limiting airbags 55 is less than the length of the placement groove 511. The limiting airbags 55 are located at the end of the discharging plate 51 away from the support 21. A support rod 512 is arranged at the end of the discharging plate 51 close to the support 21. One end of the support rod 512 is rotatably connected to the discharging plate 51, and the other end of the support rod 512 is fixedly connected to the supporting platform 1.

[0082] The second signal amplifier 54 is fixed on the outer wall of the discharge plate 51, and is electrically connected to the controller 34. The placement slot 511 is also provided with a connection contact electrically connected to the second signal amplifier 54. When the coil is fixed in the placement slot 511, the input and output ends of the coil can be electrically connected to the second signal amplifier 54 through the connection contact. The second signal amplifier 54 can be used to re-inspect the coil after a round of defect detection and corresponding paint touch-up treatment, so as to further ensure the production quality of the coil. The above connection contacts are not shown in the drawings of the specification.

[0083] The lifting hydraulic cylinder 52 is arranged at one end of the discharge plate 51 away from the support rod 512, the protruding end of the lifting hydraulic cylinder 52 is rotatably connected to the discharge plate 51, the fixed end of the lifting hydraulic cylinder 52 is fixedly connected to the supporting platform 1, the driving hydraulic cylinder 53 is fixedly arranged on the supporting platform 1 and the driving hydraulic cylinder 53 is located on one side of the support 21, a connecting pipe 56 is arranged on the fixed end of the driving hydraulic cylinder 53, the fixed end of the driving hydraulic cylinder 53 is connected with the fixed end of the lifting hydraulic cylinder 52 and the limiting airbag 55 through the connecting pipe 56, and a toggle portion 224 is fixedly arranged on the slide 22.

[0084] When the sliding motor 24 drives the slide 22 to slide away from the base 31 and the detection head 41 completes a 180-degree turn, the toggle portion 224 can squeeze the protruding end of the driving hydraulic cylinder 53, so that the lifting hydraulic cylinder 52 gradually lifts one end of the discharge plate 51 to a horizontal state, and at the same time, the limit airbag 55 is inflated. Since the detection head 41 as a whole protrudes from the slide 22, when the toggle portion 224 begins to squeeze the protruding end of the driving hydraulic cylinder 53, the end of the detection head 41 away from the slide 22 is already above the discharge plate 51, so As the plate 51 is gradually lifted to a horizontal state, the limiting airbag 55 will gradually clamp and limit the coil on the detection head 41. The controller 34 then controls the sliding motor 24 to reverse. Since the limiting airbag 55 and the placement groove 511 limit the movement of the coil, the coil will naturally detach from the detection head 41. At the same time, as the slide 22 slides, the toggle portion 224 gradually contacts and squeezes the protruding end of the driving hydraulic cylinder 53. The end of the discharge plate 51 away from the support 21 drops, the limiting airbag 55 shrinks, and the coil slides in the placement groove 511 to realize coil discharge.

[0085] The implementation principle of the coil processing device of the micro transformer of the embodiment of the present application is as follows: the coil after the varnishing treatment is placed between the two groups of fixed molds 32, the driving motor 331 makes the two groups of fixed molds 32 close to each other and fit together, the coil is fixed in the positioning cavity 321, the sliding seat 22 slides to drive the detection head 41 to rotate into the coil, and the magnetic block 432 rotates accordingly, according to the principle of electromagnetic induction, the coil generates eddy current, the first signal amplifier 35 receives the eddy current signal in the coil, and the controller 34 controls the first nozzle 413 to spray the paint liquid according to the abnormal signal fluctuation fed back by the first signal amplifier 35, until there is no abnormal signal fluctuation, and the controller 34 controls the first pressure pump 441 to turn off;

[0086] When the detection head 41 completely enters the coil, the sliding screw 23 reverses to drive the slide 22 to slide, and the coil passes through the visual camera 42 along with the detection head 41. The visual camera 42 detects whether there are defects in the paint film on the outer wall of the coil and whether there is color seepage; if the visual camera 42 detects that the paint film on the outer wall of the coil has defects and color, the controller 34 controls the second pressure pump 451 to start, and the second nozzle 452 sprays paint liquid for local repainting;

[0087] After the visual inspection is completed, the controller 34 controls the slide 22 to slide in the direction away from the inspection end 3211, the steering rack 251 and the steering gear ring 252 engage, and the inspection head 41 drives the coil to deflect 180 degrees. During this period, the magnetic block 432 continues to heat and cure the insulating varnish on the coil; the toggle part 224 squeezes the driving hydraulic cylinder 53 to raise the discharge plate 51, and the coil is immediately limited by the discharge plate 51. The controller 34 controls the sliding motor 24 to reverse and make the slide 22 slide in the opposite direction, and the coil stays on the discharge plate 51. At the same time, the toggle part 224 releases the squeezing of the protruding end of the driving hydraulic cylinder 53, and the discharge plate 51 tilts to one side.

[0088] The embodiments of the present application also disclose a processing method for a coil processing device of a micro-transformer, including the following steps:

[0089] S1. Place the coil after dip painting between two sets of fixed molds 32, start the motor to drive the bidirectional lead screw 332 to rotate, so that the two sets of fixed molds 32 approach and fit each other, and the coil is fixed in the positioning cavity 321;

[0090] S2. Start the sliding lead screw 23 to drive the slider 22 to slide towards the detection end 3211, the detection head 41 gradually screws into the coil, the magnetic block 432 rotates accordingly, and eddy currents are generated on the surface of the coil through the principle of electromagnetic induction. The first signal amplifier 35 receives the eddy current signal in the coil;

[0091] S3. When the eddy current signal shows abnormal fluctuations, the controller 34 controls the first pressure pump 441 to start, and the first spray head 413 sprays paint. This process continues until the eddy current signal no longer shows abnormal fluctuations, and then the controller 34 controls the first pressure pump 441 to close;

[0092] S4. When the detection head 41 is completely screwed into the coil, the bidirectional lead screw 332 drives the two sets of fixed molds 32 to move away from each other, and the coil slides in the direction away from the detection end 3211 along with the detection head 41. The vision camera 42 will detect whether there are defects on the outer wall paint film of the coil and whether there is color bleeding, and at the same time, the scraper 46 starts to contact the outer side of the coil;

[0093] S5. When the vision camera 42 detects defects and colors on the outer wall paint film of the coil, that is, when the vision camera 42 detects that the color appears darker at a certain place, it indicates that the defect at that place is a crack caused by paint leakage. At this time, the controller 34 will control the second pressure pump 451 to start and the solenoid valve 455 to close. The second spray head 452 will perform local paint repair on that place, and the scraper 46 will scrape off the excess clear paint and scrape the repaired place flat; when the vision camera 42 detects that the color appears lighter at a certain place, it indicates that the defect at that place is a crack. At this time, the controller 34 will control the solenoid valve 455 to open, and use the scraper 46 and the paint outlet 454 to perform local paint repair on that place, and the scraper 46 will scrape off the excess clear paint and scrape the repaired place flat;

[0094] S6. After the vision detection is completed, the controller 34 controls the sliding motor 24 to accelerate, and the slider 22 continues to slide in the direction away from the detection end 3211. The steering rack 251 and the steering gear ring 252 mesh, and the detection head 41 drives the coil to deflect 180 degrees. During this period, through the principle of electromagnetic induction and Joule's law, the magnetic block 432 will heat and cure the insulating clear paint on the coil;

[0095] S7. As the slide 22 slides away from the detection end 3211, the toggle part 224 squeezes the protruding end of the driving hydraulic cylinder 53, and the discharge plate 51 gradually rises until it is horizontal. At the same time, the coil is limited by the limiting airbag 55 on the placement groove 511, and then the slide 22 slides toward the detection end 3211. When the detection head 41 rotates out the coil, the toggle part 224 releases the squeezing of the protruding end of the driving hydraulic cylinder 53, and the discharge plate 51 tilts to one side to realize the automatic discharge of the coil. The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, all 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 coil processing device for a micro transformer, characterized in that: include: Carrying platform (1), A sliding assembly (2), the sliding assembly (2) comprising a support (21), a slide (22), a sliding screw (23) and a sliding motor (24), the support (21) being fixedly mounted on the bearing platform (1), a slide rail (211) being fixedly mounted on the support (21), the slide (22) being slidably mounted on the support (21) via the slide rail (211), the sliding screw (23) being rotatably mounted on the support (21), the sliding screw (23) being threadedly connected to the slide (22), the sliding motor (24) being fixedly mounted on the support (21), and an output end of the sliding motor (24) being fixedly connected to one end of the sliding screw (23); A fixed component (3), the fixed component (3) comprising a base (31), a fixed mold (32) and a driving member (33), the base (31) being fixedly mounted on the bearing platform (1), and the base (31) being located at one end in the length direction of the support (21), the fixed mold (32) being slidably mounted on the base (31), a controller (34) and a first signal amplifier (35) being mounted on the fixed mold (32), the controller (34) being electrically connected to the first signal amplifier (35), the sliding motor (24) being electrically connected to the controller (34), the fixed mold (32) being provided with two groups, and the two groups of fixed molds (32) being arranged along the base (31) are symmetrically arranged in the length direction, the driving member (33) is arranged on the base (31), and the driving member (33) can drive the two groups of the fixed molds (32) to approach each other or move away from each other. Each group of the fixed molds (32) is provided with a groove for accommodating the coil. When the two groups of the fixed molds (32) are close to each other and fit together, the two groups of grooves will combine to form a positioning cavity (321) adapted to the shape of the coil, one end of the positioning cavity (321) is a detection end (3211), and the other end of the positioning cavity (321) is a feeding end (3212). When the coil is fixed in the positioning cavity (321), the coil is electrically connected to the first signal amplifier (35); A detection component (4), wherein the detection component (4) is arranged on the bearing platform (1), and the detection component (4) is located on a side of the base (31) close to the support (21), the detection component (4) comprises a detection head (41) and a visual camera (42), the detection head (41) is arranged on the slide seat (22), the detection head (41) is arranged in a cylindrical shape, a spiral detection groove (411) is provided on the detection head (41), and a first liquid discharge pipe (412) is embedded in the detection head (41), The first liquid discharge pipe (412) is fixedly provided with a plurality of first nozzles (413), and the nozzles of the first nozzles (413) are located on the outer peripheral wall of the detection head (41). The slide seat (22) is fixedly provided with a first liquid storage box (44), the first liquid storage box (44) is filled with insulating varnish, and the insulating varnish is added with a thermosensitive pigment. The first liquid storage box (44) is provided with a first pressure pump (441), and the first pressure pump (441) is electrically connected to the controller (34); the detection head (41) is provided with a magnetic member (43), the detection head (41) and the magnetic member (43) rotate with the movement of the sliding assembly (2), the detection head (41) can be screwed into the coil, and the rotation of the magnetic member (43) applies an alternating magnetic field to the coil, thereby generating eddy currents on the coil, and the controller (34) detects defects in the paint film of the coil through the eddy current signal; when the controller (34) detects defects in the paint film on the inner side of the coil based on the eddy current signal in the coil, the controller (34) controls the first pressure pump (441) to start, thereby driving The first nozzle (413) sprays insulating varnish for repainting; a support frame (11) is fixedly provided on the carrier platform (1), the visual camera (42) is fixedly connected to the support frame (11), the visual camera (42) is close to the detection end (3211), and the visual camera (42) is mounted above the fixed mold (32) through the support frame (11). When the visual camera detects that the paint film on the outer wall of the coil has defects or colors, it can perform targeted repainting processing on the defects and different color displays.

2. The coil processing device of a micro transformer according to claim 1, characterized in that: An annular temporary storage portion (414) is provided at one end of the detection head (41) away from the base (31); an annular groove (415) is provided on the temporary storage portion (414); a sealing ring (416) is provided in the annular groove (415); the sealing ring (416) is rotatably sleeved on the temporary storage portion (414); one end of the first liquid discharge pipe (412) is communicated with the annular groove (415); a liquid outlet pipe (442) is fixedly provided on the liquid storage box; one end of the liquid outlet pipe (442) is fixedly connected to the sealing ring (416); and the first liquid storage box (44) is communicated with the annular groove (415) via the liquid outlet pipe (442).

3. The coil processing device of a micro transformer according to claim 1, characterized in that: A second liquid storage tank (45) is provided on one side of the support frame (11), a second pressure pump (451) is provided on the second liquid storage tank (45), the second pressure pump (451) is electrically connected to the controller (34), a second nozzle (452) is provided on the second liquid storage tank (45), and the nozzle of the second nozzle (452) is facing the detection head (41); when the visual camera (42) detects that the paint film on the outer wall of the coil has defects and color, the controller (34) controls the second pressure pump (451) to start, so that the second nozzle (452) sprays paint liquid for local repainting.

4. The coil processing device of a micro transformer according to claim 3, characterized in that: The support frame (11) is also provided with a scraper (46), the scraper (46) is located below the second liquid storage tank (45), the scraper (46) is fixedly connected to the support frame (11), and the side of the scraper (46) facing away from the support frame (11) can abut against the coil, the second liquid storage tank (45) is fixedly provided with a paint discharge pipe (453), and the end of the paint discharge pipe (453) away from the second liquid storage tank (45) is provided with a paint outlet (454), the paint discharge pipe (453) is provided with a solenoid valve (455), the solenoid valve (455) is electrically connected to the controller (34), the paint outlet (454) is located on the side of the scraper (46) abutting against the coil, and the paint outlet (454) is directly opposite to the detection head (41).

5. The coil processing device of a micro transformer according to claim 1, characterized in that: The sliding assembly (2) further comprises a steering member (25), the steering member (25) comprising a steering rack (251) and a steering gear ring (252), the steering rack (251) being fixedly mounted on the bearing platform (1), the steering rack (251) being located on one side in the width direction of the support (21), the sliding seat (22) being rotatably provided with a rotating disk (221), the rotating disk (221) being fixedly provided with a first support plate (222) and a second support plate (223), The first support plate (222) and the second support plate (223) are arranged in parallel and at intervals, one end of the detection head (41) is rotatably connected to the first support plate (222), the steering gear ring (252) is coaxially sleeved on the rotating disk (221), the steering gear ring (252) is meshed with the steering rack (251), and when the slide seat (22) moves on the support seat (21), the steering gear ring (252) can drive the detection head (41) to deflect.

6. The coil processing device of a micro transformer according to claim 5, characterized in that: The bearing platform (1) is provided with a discharge assembly (5), the discharge assembly (5) comprising a discharge plate (51), a lifting hydraulic cylinder (52) and a driving hydraulic cylinder (53); a placement groove (511) is provided on the discharge plate (51) along the length direction; limit air bags (55) are provided on both sides of the placement groove (511); a second signal amplifier (54) is provided on the discharge plate (51); the second signal amplifier (54) is electrically connected to the controller (34); a support rod (512) is provided at one end of the discharge plate (51); one end of the support rod (512) is rotatably connected to the discharge plate (51); the other end of the support rod (512) is fixedly connected to the bearing platform (1); the lifting hydraulic cylinder (52) is provided at one end of the discharge plate (51) away from the support rod (512); the protruding end of the lifting hydraulic cylinder (52) is connected to the discharge plate (51) is rotatably connected, the fixed end of the lifting hydraulic cylinder (52) is fixedly connected to the bearing platform (1), the driving hydraulic cylinder (53) is fixedly arranged on the bearing platform (1), and the driving hydraulic cylinder (53) is located on one side of the support (21), the fixed end of the driving hydraulic cylinder (53) is respectively connected to the fixed end of the lifting hydraulic cylinder (52) and the limiting airbag (55), and the sliding seat (22) is fixedly provided with a toggle portion (224); when the sliding seat (22) slides on the support (21), the toggle portion (224) can squeeze the protruding end of the driving hydraulic cylinder (53), so that the lifting hydraulic cylinder (52) lifts one end of the discharge plate (51), and at the same time, the limiting airbag (55) is inflated to clamp the coil, and the coil is electrically connected to the second signal amplifier (54), thereby realizing re-inspection and automatic discharge of the coil after the detection is completed.

7. The coil processing device of a micro transformer according to claim 5, characterized in that: The magnetic member (43) comprises a rotating shaft (431) and a magnetic block (432); a mounting cavity (417) is provided on the detection head (41); the rotating shaft (431) is coaxially rotatably connected to the detection head (41); the magnetic block (432) is located in the mounting cavity (417); a plurality of groups of the magnetic blocks (432) are provided; the plurality of groups of the magnetic blocks (432) are arranged on the rotating shaft (431) in a circular pattern with the rotating shaft (431) as the center; and the rotating shaft (431) is ) have opposite magnetic poles of two adjacent groups of magnetic blocks (432) on the support (21); a transmission member (47) is provided at one end of the rotating shaft (431); the transmission member (47) can act on the detection head (41) and the rotating shaft (431); when the slide (22) moves on the support (21), the transmission member (47) can drive the detection head (41) and the rotating shaft (431) to rotate, and the detection head (41) and the rotating shaft (431) rotate in opposite directions.

8. The coil processing device of a micro transformer according to claim 7, characterized in that: The transmission member (47) comprises a detection bevel gear (471), an auxiliary heating bevel gear (472), a transmission bevel gear (473), a transmission shaft (474) and a turbine (475); a connecting portion (418) is fixedly provided at one end of the detection head (41) away from the detection end (3211); the connecting portion (418) is rotationally connected to the first support plate (222); the detection bevel gear (471) is coaxially fixed to the connecting portion (418); one end of the rotating shaft (431) passes through the connecting portion (418) and is rotationally connected to the second support plate (223); the auxiliary heating bevel gear (472) is fixedly connected to one end of the rotating shaft (431) away from the detection head (41); and the transmission bevel gear (473) is simultaneously connected to the detection bevel gear (471). The auxiliary heating bevel gear (472) is meshed with the auxiliary heating bevel gear (473), and the transmission bevel gear (473) is located between the detection bevel gear (471) and the auxiliary heating bevel gear (472). The turbine (475) is arranged on the slide seat (22), and the turbine (475) is meshed with the sliding screw (23). A mounting plate (2221) is fixedly provided on the first support plate (222), and the transmission shaft (474) is rotatably passed through the mounting plate (2221). A avoidance hole (2211) is provided on the rotating disk (221), and one end of the transmission shaft (474) is fixedly connected to the transmission bevel gear (473), and the other end of the transmission shaft (474) passes through the avoidance hole (2211) and the slide seat (22) in sequence and is coaxially fixedly connected to the turbine (475).

9. The coil processing device of a micro transformer according to claim 1, characterized in that: The driving member (33) comprises a driving motor (331) and a bidirectional screw rod (332); a mounting portion (311) is provided on the base (31); the driving motor (331) is fixedly mounted on the mounting portion (311); the driving motor (331) is electrically connected to the controller (34); the bidirectional screw rod (332) is rotatably mounted on the mounting portion (311); the mounting portion (311) is provided with two groups; the bidirectional screw rod (332) is mounted on the base (31) via the two groups of mounting portions (311); the two groups of fixed dies (32) are respectively located at two ends of the bidirectional screw rod (332); and each group of fixed dies (32) is threadedly connected to the bidirectional screw rod (332).

10. A processing method for a coil processing device of a micro transformer according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1, placing the coil after the varnishing treatment between the two sets of fixed molds (32), starting the motor to drive the bidirectional screw rod (332) to rotate so that the two sets of fixed molds (32) are close to each other and fit together, and the coil is fixed in the positioning cavity (321); S2, starting the sliding screw (23) to drive the slide (22) to slide toward the detection end (3211), the detection head (41) gradually rotates into the coil, the magnetic block (432) rotates accordingly, and eddy currents are generated on the surface of the coil through the principle of electromagnetic induction, and the first signal amplifier (35) receives the eddy current signal in the coil; S3, when the eddy current signal fluctuates abnormally, the controller (34) controls the first pressure pump (441) to start, and the first nozzle (413) sprays the paint liquid. This process continues until the eddy current signal no longer fluctuates abnormally, and the controller (34) controls the first pressure pump (441) to shut down; S4, the head to be inspected (41) is completely screwed into the coil, the bidirectional screw rod (332) drives the two sets of fixed molds (32) to move away from each other, and the coil slides along with the inspection head (41) in a direction away from the inspection end (3211), and the visual camera (42) detects whether there are defects in the paint film on the outer wall of the coil and whether there is color bleeding, and at the same time, the scraper (46) begins to abut against the outer side of the coil; S5. When the visual camera (42) detects that the paint film on the outer wall of the coil has defects and color, that is, when the visual camera (42) detects that the color at a certain place is dark, it indicates that the defect at the place is a crack caused by paint leakage. At this time, the controller (34) will control the second pressure pump (451) to start, the solenoid valve (455) to close, and the second nozzle (452) to perform local paint repair at the place, and the scraper (46) will scrape off the excess varnish and smooth the repaired place; when the visual camera (42) detects that the color at a certain place is light, it indicates that the defect at the place is a crack. At this time, the controller (34) will control the solenoid valve (455) to open, use the scraper (46) and the paint outlet (454) to perform local paint repair at the place, and the scraper (46) will scrape off the excess varnish and smooth the repaired place; S6, after the visual inspection is completed, the controller (34) controls the sliding motor (24) to accelerate, the slide seat (22) continues to slide in the direction away from the detection end (3211), the steering rack (251) and the steering gear ring (252) are engaged, and the detection head (41) drives the coil to deflect 180 degrees. During this period, the magnetic block (432) heats the coil to solidify the insulating varnish through the principle of electromagnetic induction and Joule's law; S7. As the slide (22) slides in a direction away from the detection end (3211), the toggle portion (224) squeezes the protruding end of the driving hydraulic cylinder (53), and the discharge plate (51) gradually rises until it is in a horizontal state. At the same time, the coil is limited by the limiting airbag (55) on the placement groove (511), and then the slide (22) slides toward the detection end (3211). At the same time as the detection head (41) rotates out of the coil, the toggle portion (224) releases the squeezing of the protruding end of the driving hydraulic cylinder (53), and the discharge plate (51) tilts to one side to achieve automatic discharge of the coil.

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