Coil processing device and processing method of miniature transformer

Abstract

The invention relates to the technical field of coil machining equipment of miniature transformers, and particularly discloses a coil machining device and method of a miniature transformer, and the coil machining device comprises a bearing table, a detection assembly used for detecting coil paint film defects, a sliding assembly used for driving the detection assembly to move, and a fixing assembly used for fixing a coil. The detection assembly, the sliding assembly and the fixed assembly are all mounted on the bearing table, the detection assembly comprises a detection head and a visual camera, a magnetic part is arranged on the detection head, and when the detection head is screwed into a coil, the magnetic part can apply an alternating magnetic field to the coil, so that eddy current is generated on the coil, and the paint film defect of the coil is detected through an eddy current signal; the visual camera is arranged on the bearing table and can detect the outer ring of the coil. The device has the effects of detecting paint film defects on the outer peripheral side and the inner peripheral side of the miniature transformer coil, taking remedial measures aiming at the defects, effectively reducing the production cost and improving the 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 method for micro transformers. Background Art

[0002] Micro transformers are widely used in communication equipment, consumer electronics, medical equipment and other fields, especially in situations that require high-frequency, efficient power conversion and signal transmission. The performance of micro transformers directly affects the working efficiency and stability of the equipment, and the processing quality of its coils is one of the key factors that determine the performance of the transformer. In order to meet the increasingly complex application requirements, the processing technology of the coils is becoming more and more sophisticated, 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] At present, the conventional micro-transformer coil processing method now includes the steps of coil winding, paint dipping, drying and curing. The coil winding is mainly done manually or automatically by machine, and the coil is evenly wound on the skeleton or iron core. Sometimes, no skeleton support is required in the winding process, and the coil can be directly wound on 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 is wound, it is usually necessary to undergo paint dipping to enhance its electrical insulation performance and mechanical strength. During the paint dipping process, the surface of the coil will be evenly covered with a layer of insulating paint, and then cured by drying.

[0004] However, due to the high winding density and compact structure of the micro transformer coil, it is difficult for the paint film to form a uniform coverage on the inner side (the side close to the core) during the varnishing process, which is prone to defects such as paint leakage, cracks, and fissures. At the same time, existing detection methods, such as visual inspection or electrical performance inspection, can usually only detect paint film defects on the outer side of the coil, while the paint film on the inner side cannot be detected due to space limitations and the accuracy limitations of the detection equipment. This hidden defect may cause problems such as reduced 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 increased production costs. Summary of the invention

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

[0006] In the first aspect, the present application provides a micro transformer coil processing device, which adopts the following technical solution: A coil processing device for a micro transformer, comprising: Loading platform, A sliding assembly, the sliding assembly comprising a support, a slide, a sliding screw and a sliding motor, the support being fixedly mounted on the bearing platform, a slide rail being fixedly mounted on the support, the slide being slidably mounted on the support via the slide rail, the sliding screw being rotatably mounted on the support, and the sliding screw being threadedly connected to the slide, the sliding motor being fixedly mounted on the support, and an output end of the sliding motor being fixedly connected to one end of the sliding screw; A fixed component, the fixed component includes a base, a fixed mold and a driving member, the base is fixedly mounted on the bearing platform, and the base is located at one end in the length direction of the support, the fixed mold is slidably mounted on the base, a controller and a first signal amplifier are arranged on the fixed mold, the controller is electrically connected to the first signal amplifier, the sliding motor is electrically connected to the controller, two groups of fixed molds are arranged, and the two groups of fixed molds are symmetrically arranged along the length direction of the base, the driving member is arranged on the base, the driving member can drive the two groups of fixed molds to approach or move away from each other, each group of the fixed molds is provided with a groove for accommodating coils, when the two groups of fixed molds are close to each other and fit together, the two groups of 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; A detection component, wherein the detection component is arranged on the bearing platform, and the detection component is located on a side of the base close to the support, the detection component comprises a detection head and a visual camera, the detection head is arranged on the slide seat, the detection head is arranged in a cylindrical shape, a spiral detection groove is provided on the detection head, a first liquid discharge pipe is embedded in the detection head, a plurality of groups of first nozzles are fixedly provided on the first liquid discharge pipe, and the nozzles of the first nozzles are located on the outer peripheral wall of the detection head, a first liquid storage box is fixedly provided on the rotating disk, the first liquid storage box is filled with insulating varnish, and a thermosensitive pigment is added to the insulating varnish, The first liquid storage tank is provided with a first pressure pump, and the first pressure pump is electrically connected to the controller; the detection head is provided with a magnetic part, and the detection head and the magnetic part rotate with the movement of the sliding component, and the detection head can be screwed into the coil. The rotation of the magnetic part applies an alternating magnetic field to the coil, thereby generating eddy currents on the coil, and the controller detects defects in the paint film of the coil through eddy current signals; when the controller detects defects in the paint film on the inner side of the coil according to the eddy current signals in the coil, the controller controls the first pressure pump to start, thereby driving the first nozzle to spray insulating varnish for repainting; A support frame is fixedly provided on the supporting platform, and the visual camera is fixedly connected to the support frame. The visual camera is close to the detection end, and the visual camera is mounted above the fixed mold through the support frame. When the visual camera detects that there are defects or colors in the paint film on the outer wall of the coil, the defects and different color displays can be specifically repainted.

[0007] By adopting the above technical solution, the grooves on the two sets of fixed molds are combined to form a positioning cavity for the adapter coil, so as to realize the precise fixation of the coil, and ensure the stability of the coil in 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; the spiral detection groove and the first nozzle arranged on the detection head can ensure that when the detection head detects defects on the inner wall of the coil, the detection head can detect the defects. The probe can perform touch-up paint processing simultaneously, and heat-sensitive pigments are added to the repaired insulating varnish. 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, so that in the subsequent visual inspection, it can assist in the detection of defects on the outer wall of the coil, further improving the inspection effect; in addition, the inspection head also takes into account the role of the material picking and discharging fixture, so that after the inner ring is inspected, the outer ring of the coil can be inspected by the visual camera along with the inspection head, ensuring the comprehensive inspection of the coil appearance and paint film, and improving the ease of use and convenience of operation of the device.

[0008] Preferably, a first liquid discharge pipe is embedded in the detection head, a plurality of first nozzles are fixedly provided in the first liquid discharge pipe, and the nozzles of the first nozzles are located on the outer peripheral wall of the detection head, a first liquid storage box is fixedly provided on the rotating disk, the first liquid storage box is filled with insulating varnish, and thermosensitive pigment is added to the insulating varnish, a first pressure pump is provided on the first liquid storage box, and the first pressure pump is electrically connected to the controller, an annular temporary storage part is provided at one end of the detection head away from the base, an annular groove is provided on the temporary storage part, a sealing ring is provided in the annular groove, and the sealing ring is rotatably sleeved on the temporary storage part, one end of the first liquid discharge pipe is communicated with the annular groove, a liquid outlet pipe is fixedly provided on the liquid storage box, one end of the liquid outlet pipe is fixedly connected with the sealing ring, and the liquid storage box is communicated with the annular groove through the liquid outlet pipe; when the controller detects that the paint film on the inner side of the coil is defective according to the eddy current signal in the coil, the controller controls the first pressure pump to start, thereby driving the first nozzle to spray insulating varnish for repainting.

[0009] By adopting the above technical solution, 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 box can be smoothly supplied to the first liquid discharge pipe, thereby improving the processing efficiency and practical operability of the entire device.

[0010] 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 nozzle is provided on the second liquid storage tank, and the nozzle of the second nozzle is facing the support; when the visual camera detects that the paint film on the outer wall of the coil has defects and color, the controller controls the second pressure pump to start, so that the second nozzle sprays paint liquid for local paint touch-up.

[0011] By adopting the above technical solution, by arranging a second liquid storage tank and its matching second pressure pump and second nozzle on one side of the support frame, it is possible to achieve effective detection and local paint touch-up of the paint film on the outer wall of the coil, that is, when the visual camera detects that there are 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 nozzle sprays paint liquid for local paint touch-up, which can not only achieve treatment of specific defective areas and improve the overall quality of the paint film on the surface of the coil, but also because heat-sensitive pigments are added to the insulating varnish used for paint touch-up on the inner ring, when the insulating varnish is sprayed on the defect, the insulating varnish will penetrate into the defect, and at this time, the corresponding part of the outer ring of the coil may have a color that is opposite to the color of the insulating varnish. The corresponding color changes, and the depth of the color can reflect the severity of the corresponding defect. If the color is dark, it indicates that the defect is a crack caused by paint leakage; if the color is light, the defect on the surface is a crack. While detecting the defects on the outside of the coil, the visual camera can also perform targeted paint repair according to the appearance of the outside color. In this way, the overall insulation performance and reliability of the coil can be improved, and the main type of defects on the inside of the coil can be determined. Based on this, the previous step of varnishing treatment can be improved, thereby avoiding the occurrence of similar defects in subsequent production, thereby improving the reliability and production quality of micro transformer coil processing as a whole.

[0012] Preferably, a scraper is also provided on the support frame, and the scraper is located below the second liquid storage tank. The scraper is fixedly connected to the support frame, and the side of the scraper away from the support frame can abut against the coil. A paint discharge pipe is fixedly provided on the second liquid storage tank, and a paint outlet is provided at one end of the paint discharge pipe away from the second liquid storage tank. A solenoid valve is provided on the paint discharge pipe, and the solenoid valve is electrically connected to the controller. The paint outlet is located on the side where the scraper abuts against the coil, and the paint outlet is directly opposite to the detection head.

[0013] By adopting the above technical solution, a scraper is arranged to abut against the outer side of the coil, and a paint outlet is arranged on the scraper. The paint outlet can repair lighter defects on the outer side of the coil, and the scraper can scrape off excess varnish on the coil, thereby ensuring the uniformity of the paint film thickness after repair. In addition, an electromagnetic 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, thereby improving the reliability and production quality of the micro transformer coil processing as a whole.

[0014] Preferably, the sliding assembly also includes a steering member, which includes a steering rack and a steering gear ring. The steering rack is fixedly mounted on the bearing platform, and the steering rack is located on one side in the width direction of the support. A rotating disk is rotatably arranged on the sliding seat, and a first support plate and a second support plate are fixed on the rotating disk. The first support plate and the second support plate are arranged in parallel and at intervals. One end of the detection head is rotatably connected to the first support plate, and the steering gear ring is coaxially sleeved on the rotating disk, and the steering gear ring is meshed with the steering rack. When the sliding seat moves on the support, the steering gear ring can drive the detection head to deflect.

[0015] By adopting the above technical solution, the steering gear ring is meshed with the steering rack, so that the detection head can be deflected at an angle during the movement of the slide along the guide rail. The purpose of this arrangement is, firstly, to facilitate the subsequent detection and discharge of the coil after the repainting is completed, and secondly, to increase the moving distance of the detection head and the coil on the same overall sliding path. Because in this process, the coil and the magnetic part will continue to rotate relative to each other. According to the principle of electromagnetic induction and Joule's law, the coil itself will also generate heat, thereby realizing the heating and curing treatment of the repaired insulating varnish. Increasing the moving distance increases the heating and curing time, thereby ensuring the quality of the repair paint film.

[0016] 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.

[0017] 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.

[0018] Preferably, the magnetic component includes a rotating shaft and a magnetic block, the detection head is provided with an installation cavity, the rotating shaft is coaxially rotatably connected with the detection head, the magnetic block is located in the installation cavity, and the magnetic blocks are provided in multiple groups, and the multiple groups of magnetic blocks are arranged in a circle 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, and a transmission member is provided at one end of the rotating shaft, and the transmission member can act on the detection head and the rotating shaft, and when the slide moves on the support, the transmission member can drive the detection head and the rotating shaft to rotate, and the rotation directions of the detection head and the rotating shaft are opposite.

[0019] By adopting the above technical solution, when the slide moves on the support, the rotating shaft and the detection head can rotate in opposite directions and the magnetic poles of the 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 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.

[0020] Preferably, the transmission member includes a detection bevel gear, an auxiliary thermal bevel gear, a transmission bevel gear, a transmission shaft and a turbine, the detection head is fixedly provided with a connecting part at one end away from the detection end, the connecting part is rotatably connected to the first support plate, the detection bevel gear is coaxially fixed on the connecting part, one end of the rotating shaft passes through the connecting part and is rotatably connected to the second support plate, the auxiliary thermal bevel gear is fixedly connected with the end of the rotating shaft away from the detection head, the transmission bevel gear is meshed with the detection bevel gear and the auxiliary thermal bevel gear at the same time, and the transmission bevel gear is located between the detection bevel gear and the auxiliary thermal bevel gear. The turbine is arranged on a sliding seat, and the turbine is meshed with the sliding screw, the first support plate is fixedly provided with a mounting plate, the transmission shaft rotatably penetrates the mounting plate, the rotating disk is provided with an avoidance hole, one end of the transmission shaft is fixedly connected to the transmission bevel gear, and the other end of the transmission shaft passes through the avoidance hole and the sliding seat in sequence and is coaxially fixedly connected to the turbine.

[0021] By adopting the above technical solution, multiple sets of gear transmission are used to drive the detection head to rotate during the sliding process of the slide, and at the same time, the detection head and the magnetic part can rotate relative to each other in opposite directions. Not only can the detection head automatically rotate in and out of the coil, but the intensity of the alternating magnetic field applied by the magnetic part to the coil is also improved, effectively increasing the coverage range of the detection head to the coil, thereby improving the detection accuracy of surface defects of the coil and ensuring the reliability of the detection results.

[0022] Preferably, the driving member includes a driving motor and a bidirectional screw, a mounting portion is provided on the base, the driving motor is fixed on the mounting portion, the driving motor is electrically connected to the controller, the bidirectional screw is rotatably provided on the mounting portion, the mounting portion is provided with two groups, the bidirectional screw is mounted on the base through two groups of the mounting portions, the two groups of fixed molds are respectively located at both ends of the bidirectional screw, and each group of the fixed molds is threadedly connected to the bidirectional screw.

[0023] By adopting the above technical solution, the set drive motor and bidirectional screw can realize automatic adjustment of the fixed mold, so that it can automatically approach or move away according to the actual needs of the coil during the processing process. At the same time, it can also make the movement of the fixed mold more precise, and can effectively ensure the position stability of the coil during the processing, thereby reducing the processing error caused by position deviation and ensuring the processing quality of the coil.

[0024] On the other hand, the present application provides a processing method for a coil processing device suitable for a micro transformer, comprising the following steps: S1. Place the coil after varnishing treatment between two sets of fixed molds, start the motor to drive the bidirectional screw to rotate so that the two sets of fixed molds are close to each other and fit together, and the coil is fixed in the positioning cavity; S2, start the sliding screw to drive the slide to the detection end, the detection head gradually rotates into the coil, the magnetic block rotates accordingly, and 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; S3, when the eddy current signal fluctuates abnormally, the controller controls the first pressure pump to start, and the first nozzle sprays the paint liquid. This process continues until the eddy current signal no longer fluctuates abnormally, and the controller controls the first pressure pump to shut down; S4. When the detection head is completely screwed into the coil, the bidirectional screw drives the two sets of fixed molds to move away from each other, and the coil slides away from the detection end along with the detection head. The visual camera detects whether there are defects in the paint film on the outer wall of the coil and whether there is color bleeding. At the same time, the scraper starts to contact the outer side of the coil; S5. When the visual camera detects that the paint film on the outer wall of the coil has defects and color, that is, when the visual camera detects that the color at a certain place is dark, it indicates that the defect at that place is a crack caused by paint leakage. At this time, the controller will control the second pressure pump to start, the solenoid valve to close, and the second nozzle will perform local touch-up paint at that place, and the scraper will scrape off the excess varnish and smooth the repaired place; when the visual camera detects that the color at a certain place is light, it indicates that the defect at that place is a crack. At this time, the controller will control the solenoid valve to open, use the scraper and the paint outlet to perform local touch-up paint at that place, and the scraper will scrape off the excess varnish and smooth the repaired place; 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. 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.

[0025] 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.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 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. 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; 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; 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; 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

[0027] 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.

[0028] Figure 2 It is a schematic diagram of the overall structure of the fixing component in the embodiment of the present application.

[0029] Figure 3 It is a schematic diagram of the half-section structure of the detection component in the embodiment of the present application.

[0030] Figure 4 yes Figure 2 Enlarged schematic diagram of part A.

[0031] Figure 5 It is a schematic diagram of the overall structure of the detection component in the embodiment of the present application.

[0032] Figure 6 It is a schematic diagram of the overall structure of the discharging assembly in the embodiment of the present application.

[0033] Reference numerals: 1, bearing platform; 11, supporting frame; 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; 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; 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; 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; 6. Loading assembly; 61. Loading rack; 62. Loading clamp; 611. Clamping seat; 612. Guide rail. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-6 This application is described in further detail.

[0035] The embodiment of the present application discloses a coil processing device for a micro transformer.

[0036] Reference Figure 1The coil processing device and processing method of the micro transformer include a carrier 1, a loading component 6, a fixed component 3, a sliding component 2, a detection component 4 and a discharging component 5. The loading component 6, the fixed component 3, the detection component 4, the sliding component 2 and the discharging component 5 are all installed on the carrier 1, the loading component 6 is located on one side of the fixed component 3, the detection component 4 and the sliding component 2 are located on the other side of the fixed component 3, the detection component 4 is located between the sliding component 2 and the fixed component 3, and the discharging component 5 is arranged on the side of the sliding component 2 away from the fixed component 3.

[0037] The loading component 6 can place the coil after the paint treatment into the fixing component 3; the fixing component 3 can be used to fix the coil and provide a relatively closed environment for the inner circle of the coil to be repainted; the sliding component 2 can realize the transfer and unloading of the coil after the inspection is completed; the detection component 4 can perform an overall inspection of the paint film of the coil after the paint treatment, and perform targeted repainting; the discharging component 5 can automatically remove the coil from the detection component 4 and automatically transport the coil away.

[0038] Reference Figure 1 and Figure 2 The feeding assembly 6 includes a feeding frame 61, a clamping seat 611 and a feeding clamping claw 62. The feeding frame 61 is fixed on the supporting platform 1. The feeding frame 61 is provided with a guide rail 612 and a linear driving member. The clamping seat 611 is slidably provided on the feeding frame 61 through the guide rail 612, and the feeding clamping claw 62 is fixed on the clamping seat 611. In the embodiment of the present application, the linear driving member can be set as a cylinder, the feeding clamping claw 62 is set as a pneumatic clamping claw, and the protruding 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 drive. The linear driving member is not shown in the accompanying drawings describing the embodiments of the present application.

[0039] Reference 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 fixed component 3 includes a base 31, a fixed 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 screw 332. The base 31 is fixed on the carrier 1. A slide groove is provided on the base 31. A slider is fixed on the fixed mold 32. The slider is slidably connected with the slide groove. The fixed mold 32 is slidably arranged on the base 31 through the slider. Two groups of fixed molds 32 are provided, and the two groups of fixed molds 32 are symmetrically arranged along the length direction of the base 31. Each group of fixed molds 32 is provided with a groove for accommodating a part of the coil. The slider and the slide groove are not shown in the drawings describing the embodiments of the present application.

[0040] The base 31 is provided with a mounting portion 311, and the mounting portion 311 is provided with two groups, and the two groups of mounting portions 311 are symmetrically arranged along the length direction of the base 31. The driving motor 331 is fixedly arranged on the mounting portion 311 on any side of the base 31. One end of the bidirectional screw 332 is rotatably connected with the mounting portion 311. The bidirectional screw 332 is mounted on the base 31 through the two groups of mounting portions 311. The two groups of fixed molds 32 are respectively located at the two ends of the bidirectional screw 332, and each group of fixed molds 32 is threadedly connected with the bidirectional screw 332. The output end of the driving motor 331 is fixedly connected with one end of the bidirectional screw 332, and the driving motor 331 can drive the bidirectional screw 332 to rotate, so that the two groups of fixed molds 32 are close to each other or away from each other.

[0041] When the two groups of fixed molds 32 are close to each other, the two groups of grooves will be combined to form a positioning cavity 321 adapted to the shape of the coil. One end of the positioning cavity 321 is set as a detection end 3211, and the other end of the positioning cavity 321 is set as a loading end 3212.

[0042] The controller 34 and the first signal amplifier 35 are both fixed on the fixed mold 32. Since the micro transformer itself is small in size, has a high coil winding density and a compact structure, the first signal amplifier 35 is needed to receive and amplify the detection electrical signal generated by the detection component 4 inside the coil. The drive motor 331 and the first signal amplifier 35 are both electrically connected to the controller 34. The grooves of each set of fixed molds 32 are provided with connection contacts electrically connected to the first signal amplifier 35. When the coil is fixed in the positioning cavity 321, the input and output ends of the coil can be electrically connected to the first signal amplifier 35 through the connection contacts.

[0043] Reference Figure 4 In the embodiment of the present application, the sliding assembly 2 includes a support 21, a slide 22, a rotating disk 221, a sliding 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 fixed on the support platform 1, the support 21 is located on the side of the base 31 close to the detection end 3211, a slide rail 211 is fixed on the support 21, the slide 22 is slidably set on the support 21 through the slide rail 211, a rotating part is fixed on the slide 22, a rotating groove is opened on the rotating disk 221, the rotating part is rotatably connected to the rotating groove, and the rotating disk 221 is rotatably set on the slide 22 through the rotating part. The sliding screw 23 is rotatably arranged on the support 21, and the sliding screw 23 is threadedly connected to the sliding seat 22. The sliding motor 24 is fixedly arranged on the support 21, and the output end of the sliding motor 24 is fixedly connected to one end of the sliding screw 23. The sliding motor 24 is electrically connected to the controller 34, and the controller 34 can control the speed of the sliding motor 24. The rotating part and the rotating groove are not shown in the drawings describing the embodiments of the present application.

[0044] The steering rack 251 is fixed on the supporting platform 1, and is located on one side of the width direction of the support 21, and is closer to the discharging assembly 5. The steering gear ring 252 is coaxially fixed on the rotating disk 221, and the steering gear ring 252 is engaged with the steering rack 251. When the slide 22 moves on the support 21, the steering gear ring 252 can drive the rotating disk 221 to deflect.

[0045] Reference Figure 3 , Figure 4 and Figure 5 In the embodiment of the present application, the detection component 4 includes a detection head 41, a magnetic member 43, a first liquid storage box 44, a second liquid storage box 45, a scraper 46, a transmission member 47 and a visual camera 42. The detection head 41 is configured to be cylindrical, and a spiral detection groove 411 is provided on the detection head 41. A first support plate 222 and a second support plate 223 are fixedly provided on the side of the rotating disk 221 away from the slide seat 22. The first support plate 222 and the second support plate 223 are arranged in parallel and spaced apart. 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 rotatably connected to the first support plate 222, and the detection head 41 is rotatably set on the rotating disk 221 through the connecting portion 418.

[0046] The detection head 41 is embedded with a first liquid discharge pipe 412, which is a spiral pipe with the same pitch as the coil pitch. The first liquid discharge pipe 412 is fixed 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, and the plurality of nozzles are spirally distributed on the detection head 41. The rotating disk 221 is fixed with a first liquid storage box 44, which is filled with insulating varnish, and the first liquid storage box 44 is filled with insulating varnish with thermosensitive pigment added therein, and the color of the thermosensitive pigment will gradually fade after heating until there is no color.

[0047] The magnetic component 43 includes a rotating shaft 431 and a magnetic block 432. An installation cavity 417 is opened inside the detection head 41. The rotating shaft 431 is coaxially rotatable and penetrates the detection head 41. The magnetic block 432 is located in the installation cavity 417. There are multiple groups of magnetic blocks 432. The multiple groups of magnetic blocks 432 are arranged in a circle 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. The end of the rotating shaft 431 close to the first support plate 222 extends out of the connecting part 418 and is rotatably connected to the second support plate 223.

[0048] The first liquid storage box 44 is provided with a first pressure pump 441, which is electrically connected to the controller 34. An annular temporary storage portion 414 is provided at one end of the detection head 41 away from the base 31. The temporary storage portion 414 is provided with an annular groove 415. 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 first liquid storage box 44. One end of the liquid outlet pipe 442 is fixedly connected to the sealing ring 416. The first liquid storage box 44 is communicated with the annular groove 415 through the liquid outlet pipe 442.

[0049] The transmission member 47 includes a detection bevel gear 471, an auxiliary heat bevel gear 472, a transmission bevel gear 473, a transmission shaft 474 and a turbine 475. The detection bevel gear 471 is coaxially fixed on the connecting portion 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 heat bevel gear 472 is fixedly connected to the end of the rotating shaft 431 away from the detection head 41. The transmission bevel gear 473 is meshed with the detection bevel gear 471 and the auxiliary heat bevel gear 472 at the same time, and the transmission bevel gear 473 is located between the detection bevel gear 471 and the auxiliary heat bevel gear 472. A avoidance cavity 225 for mounting a turbine 475 is provided on the slide 22, the turbine 475 is arranged in the avoidance cavity 225, the turbine 475 is meshed with the sliding screw 23, a mounting plate 2221 is fixedly provided on the first support plate 222, the transmission shaft 474 is rotatably penetrated on the mounting plate 2221, a avoidance hole 2211 is provided on the rotating disk 221, 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 22 in turn, extends into the avoidance cavity 225, and is coaxially fixedly connected to the turbine 475.

[0050] When the slide 22 moves on the support 21 , the sliding screw 23 drives the turbine 475 to rotate, and the turbine 475 rotates the detection head 41 and the rotating shaft 431 through the transmission shaft 474 , and the detection head 41 and the rotating shaft 431 rotate in opposite directions.

[0051] At the beginning of the detection, the controller 34 controls the output end of the sliding motor 24 to rotate slowly, the detection head 41 rotates into the coil from the detection end 3211, and the magnetic part 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 the conductor is in an alternating magnetic field, eddy currents, i.e., induced currents, will be generated on the conductor. The first signal amplifier 35 can receive these eddy current signals, and the paint film on the surface of the coil will directly affect the intensity and distribution of the eddy currents. For example, when the paint film of the coil is missing locally, the insulation of the coil deteriorates, and the signal intensity flow path of the eddy current will suddenly fluctuate abnormally. The controller can detect whether there is a defect in the paint film of the coil based on the signal fluctuation changes fed back by the first signal amplifier 35. In addition, when the slide 22 just slides to the end of the slide rail 211 close to the base 31, the detection head 41 just completely rotates into the coil.

[0052] During this period, if there are defects such as paint leakage and cracks in the inner circle of the coil, the eddy current signal generated on the surface of the coil will fluctuate, and the controller 34 will control the first pressure pump 441 to start, driving the first nozzle 413 to spray insulating varnish for repainting until the subsequent first signal amplifier 35 no longer receives abnormal fluctuations in the eddy current signal. 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 chamber, the insulating varnish sprayed by the pressure pump itself will have a certain pressure. Therefore, once the insulating varnish is sprayed onto the defect, the insulating varnish will penetrate into the defect. At this time, the corresponding part of the outer circle of the coil will 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 dark, this indicates that the defect is a crack caused by paint leakage; if the color is light, the defect on the surface is a crack.

[0053] The support frame 11 is fixedly provided on the support platform 1, and 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 set 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, and the second liquid storage tank 45 is provided with a second pressure pump 451, and the second pressure pump 451 is electrically connected to the controller 34. The second liquid storage tank 45 is provided with a second nozzle 452, and the nozzle of the second nozzle 452 is facing the support 21. The visual camera 42 can detect defects in the paint film on the outer wall of the coil.

[0054] More specifically, after the detection head 41 is completely screwed into the coil, the controller 34 controls the driving motor 331 to rotate, and the bidirectional screw 332 controls the two sets of fixed molds 32 to move away from each other. After the fixed mold 32 is opened in place, the sliding motor 24 starts to drive the slide 22 to slide away from the base 31. At this time, the controller 34 controls the sliding screw 23 to rotate slowly, so that the detection head 41 rotates slowly while passing under the visual camera 42. When the visual camera 42 detects that the paint film on the outer wall of the coil is defective or colored, the controller 34 will control the second pressure pump 451 to start, and the second nozzle 452 can spray paint liquid for local repainting. When the detection head 41 leaves the shooting range of the visual camera 42, the controller 34 controls the sliding motor 24 to speed up. As the slide 22 gradually slides away from the base 31, the steering gear ring 252 engages with the steering rack 251, so that the detection head 41 deflects 180 degrees.

[0055] In addition, the speed of the sliding motor 24 is accelerated, and the relative rotation between the detection head 41 and the rotating shaft 431 is also accelerated. At this time, the alternating magnetic field in which the coil is located changes dramatically. According to Joule's law Q=I2RtQ = I^2 R tQ=I2Rt (heat is proportional to the square of current, resistance and time), the coil itself will heat up rapidly, which can also accelerate the rapid solidification of the paint film after the coil is repainted when the detection head 41 is reversed.

[0056] The scraper 46 is arranged on the support frame 11, the scraper 46 is located below the second liquid storage tank 45, and the scraper 46 is located on the side of the visual camera 42 away from the fixed mold 32, one side of the scraper 46 is fixedly connected to the support frame 11, and the side of the scraper 46 away from the support frame 11 can abut against the coil, and a paint discharge pipe 453 is fixedly provided on the second liquid storage tank 45, and a paint outlet 454 is provided at one end of the paint discharge pipe 453 away from the second liquid storage tank 45, and a solenoid valve 455 is provided on the paint discharge pipe 453, and the solenoid valve 455 is electrically connected to the controller 34, and the paint outlet 454 is located on the side where the scraper 46 abuts against the coil, and the paint outlet 454 is directly opposite to the detection head 41.

[0057] There are two groups of paint outlets 454, which are arranged along the width direction of the scraper 46. Each group of paint outlets 454 is embedded with a ball. When the scraper 46 abuts against 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 varnish in the paint discharge pipe 453 will be smeared on the defects of the coil as the ball rolls. At the same time, the scraper 46 abuts against the coil, and the scraper 46 will scrape off the excess varnish to ensure the uniformity of the paint film thickness. The ball is not shown in the drawings of the specification.

[0058] Reference 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.

[0059] 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.

[0060] 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.

[0061] 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.

[0062] 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; 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; 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.

[0063] The embodiment of the present application also discloses a method for processing a coil processing device of a micro transformer, comprising the following steps: S1, placing the coil after the varnishing treatment between the two sets of fixed molds 32, starting the motor to drive the bidirectional screw 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, start 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 detection head 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 with the detection head 41 in the direction away from the detection end 3211. 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. At the same time, the scraper 46 starts to contact 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 that 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 that 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 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 at that 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 22 continues to slide 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 electromagnetic induction principle and Joule's law; 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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