Full-automatic test equipment for common-mode noise of planar transformer

Abstract

The invention discloses full-automatic testing equipment for common-mode noise of a planar transformer, and the equipment comprises a detection unit which is used for carrying out the common-mode noise testing of the planar transformer; the feeding unit is located on the feeding side of the detection unit, the feeding unit is provided with a first temporary storage device, and the first temporary storage device is used for temporarily storing the planar transformer to be detected; the discharging unit is located on the discharging side of the detection unit, the discharging unit is provided with a second temporary storage device and a third temporary storage device, and the second temporary storage device and the third temporary storage device are used for temporarily storing the plane transformers which are not detected to be qualified and the plane transformers which are detected to be qualified correspondingly; and the transfer unit comprises a transfer manipulator used for transferring the planar transformer, and the transfer manipulator can achieve circulation of the planar transformer among the feeding unit, the detection unit and the discharging unit.

Description

Technical Field

[0001] The present invention relates to the technical field of testing equipment, and in particular to a fully automatic testing device for common-mode noise of a planar transformer. Background Art

[0002] A planar transformer is a transformer with the characteristics of high frequency, low profile, small height and high operating frequency.

[0003] Currently, common-mode noise testing of planar transformers is performed manually on a single piece basis, relying on manual effort to distinguish good from defective products. This is inefficient, and there is no automated testing equipment that can simultaneously automatically load and unload boards, automatically identify and distinguish good from defective products, making test data collection difficult and product data difficult to trace. Therefore, sustained, stable, and efficient mass production cannot be achieved under the high demands of product quality. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a fully automatic test device for common-mode noise of planar transformers, which can improve the quality and efficiency of testing and enable continuous, stable and efficient mass production.

[0005] A fully automatic test device for common-mode noise of a planar transformer according to an embodiment of the present invention includes: A detection unit for performing common mode noise testing on planar transformers; A loading unit is located on the loading side of the detection unit, and the loading unit is provided with a first temporary storage device, and the first temporary storage device is used to temporarily store the planar transformer to be detected; The unloading unit is located on the unloading side of the detection unit, and is provided with a second temporary storage device and a third temporary storage device, the second temporary storage device and the third temporary storage device are respectively used to temporarily store planar transformers that fail the test and planar transformers that pass the test, and the second temporary storage device and the third temporary storage device are spaced apart in a direction away from the detection unit; The transfer unit includes a transfer robot for transferring the planar transformer. The transfer robot can realize the flow of the planar transformer between the loading unit, the detection unit and the unloading unit.

[0006] The fully automated common-mode noise testing equipment for planar transformers according to an embodiment of the present invention has at least the following beneficial effects: This solution replaces manual operations with fully automated equipment. The coordinated operation of the detection and transfer units enables continuous testing, and the classified storage design of the temporary storage device ensures precise and controllable product flow. Furthermore, the modular layout of each unit optimizes the equipment's footprint, and the robot's motion path planning shortens product transfer time.

[0007] This application achieves full automation of common-mode noise testing for planar transformers, effectively eliminating efficiency bottlenecks and sorting errors caused by manual operations. The coordination of the detection unit and the transfer unit significantly improves the test cycle, and the design of the classified temporary storage device ensures the reliability of product quality traceability. The coordinated operation of various functional modules not only improves test stability but also provides the hardware foundation for the automatic collection and storage of test data, meeting the high standards for product testing in modern electronics manufacturing.

[0008] According to an embodiment of the present invention, a fully automatic test device for common-mode noise of planar transformers is provided with a feeding position, a first temporary storage table and a first lifting drive member. The feeding position is located above the first temporary storage table. A plurality of planar transformers to be tested are stacked vertically on the first temporary storage table. The output end of the first lifting drive member is connected to the first temporary storage table. The first lifting drive member can drive the first temporary storage table to adjust its position in the vertical direction so that the planar transformer to be tested located at the top reaches the feeding position.

[0009] According to an embodiment of the present invention, a fully automatic test device for common-mode noise of a planar transformer is provided. The second temporary storage device and the third temporary storage device are both provided with a material unloading position, a second temporary storage table and a second lifting drive. The material unloading position is located above the second temporary storage table. A plurality of tested planar transformers are stacked on the second temporary storage table in a vertical direction. The output end of the second lifting drive is connected to the second temporary storage table. The second lifting drive can drive the second temporary storage table to adjust its position in the vertical direction so that the tested planar transformer located at the top moves away from the material unloading position.

[0010] According to an embodiment of the present invention, a fully automatic test device for common-mode noise of a planar transformer is provided. The detection unit and the unloading unit are provided with a marking unit. The marking unit includes a marking device and a loading device. The marking device is arranged above the loading device. The loading device is used to fix the planar transformer that has completed the inspection and is to be marked. The marking device sets an identification code on the surface of the planar transformer according to the inspection results.

[0011] According to an embodiment of the present invention, a fully automatic test device for common-mode noise of a planar transformer is provided. The loading device includes a loading seat and an adsorption mechanism. The adsorption mechanism includes an adsorption plate and a vacuum negative pressure machine arranged on the loading seat. The vacuum negative pressure machine is connected to the adsorption plate, and the adsorption plate is used to adsorb and fix the planar transformer to be marked.

[0012] According to a fully automatic test device for common-mode noise of a planar transformer according to an embodiment of the present invention, the marking unit further comprises a three-axis moving device, and one of the carrier and the marking device is connected to the three-axis moving device; or, The marking unit also includes a three-axis moving device, and the material carrier and the marking device are both connected to the three-axis moving device. According to an embodiment of the present invention, a planar transformer common mode noise fully automatic test device, According to an embodiment of the present invention, a fully automatic test device for common-mode noise of a planar transformer is provided, and an identification unit is provided between the marking unit and the unloading unit. The identification unit is electrically connected to the transfer robot. The identification unit is used to identify the identification code set on the surface of the planar transformer. The transfer robot can transfer the planar transformer to the second temporary storage device or the third temporary storage device according to the identification information of the identification unit.

[0013] According to a fully automatic testing device for common-mode noise of a planar transformer according to an embodiment of the present invention, the transfer unit also includes a linear moving module, and two transfer robots are installed on the linear moving module. One of the two transfer robots is used to transfer the planar transformer to be tested, and the other of the two transfer robots is used to transfer the tested planar transformer.

[0014] According to an embodiment of the present invention, a fully automatic testing device for common-mode noise of a planar transformer, the transfer robot includes a mounting plate and a plurality of suction cups arranged on the mounting plate, the suction cups are movably connected to the mounting plate, the position of the suction cups can be adjusted on the mounting plate, and the suction cups are connected to an external negative pressure mechanism.

[0015] According to an embodiment of the present invention, a fully automatic test device for common-mode noise of a planar transformer is provided, wherein the detection unit includes an upper detection mold and a lower detection mold, wherein the upper detection mold and the lower detection mold can be close to or away from each other, the lower detection mold abuts against the bottom of the planar transformer to be tested, and the upper detection mold is crimped against the top of the planar transformer to be tested.

[0016] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which: Figure 1 The figure is a schematic structural diagram of a fully automatic test device for common-mode noise of a planar transformer according to an embodiment of the present invention.

[0018] Description of reference numerals: Detection unit 100; upper detection mold 110; lower detection mold 120; First temporary storage device 200; first temporary storage table 210; first lifting drive member 220; Second temporary storage device 300; second temporary storage table 310; second lifting drive member 320; A third temporary storage device 400; Transfer robot 500; mounting plate 510; suction cup 520; Marking unit 600; marking device 610; loading device 620; loading base 621; adsorption plate 622; Linear motion module 700; Identification unit 800. DETAILED DESCRIPTION

[0019] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0020] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0021] In the description of an invention, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0022] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0023] In existing technology, planar transformers are widely used due to their high-frequency and low-profile characteristics, but their common-mode noise testing has long relied on manual operations. During traditional testing, operators manually place the products to be tested, perform tests on individual items, and then use experience to determine whether they are good or bad. This method suffers from low testing efficiency, large fluctuations in sorting accuracy, and incomplete test data recording. Especially in mass production scenarios, manual sorting can easily lead to a mix of good and bad products, making it difficult to associate test data with specific product batches, making quality traceability difficult.

[0024] In order to solve the above problems, R&D personnel conducted a systematic analysis of the manual testing process and found that the core factors restricting efficiency lie in the material flow and data collection links. By disassembling the test process, it was found that the three links of supplying the products to be tested, executing the test, and judging the results can all be replaced by mechanical automation instead of manual operations. Based on this, we first planned to set up an independent loading module to achieve continuous supply of products to be tested; secondly, we established a unloading module with sorting function to solve the problem of product confusion through physical isolation; finally, we used programmable mechanical devices to connect the modules to form a closed material transmission path. In this process, how to match the capacity of the temporary storage device with the operating rhythm of the robot became the key breakthrough point. Finally, through the design of combining vertical stacking structure with lifting drive, the continuity of material supply and transfer was ensured.

[0025] Therefore, refer to Figure 1 The present application proposes a fully automatic test device for common-mode noise of planar transformers, including a detection unit 100 for performing common-mode noise testing on planar transformers; a loading unit is located on the loading side of the detection unit 100, and is provided with a first temporary storage device 200 for temporarily storing planar transformers to be tested; a unloading unit is located on the unloading side of the detection unit 100, and is provided with a second temporary storage device 300 and a third temporary storage device 400 for storing unqualified products and qualified products respectively; a transfer unit includes a transfer robot 500 to realize the flow of planar transformers between the loading unit, the detection unit 100, and the unloading unit.

[0026] Among them, the detection unit 100 refers to the core functional module for performing common mode noise testing, which can be specifically implemented by combining an electromagnetic coupling device with a signal acquisition module, and obtaining the electromagnetic interference signal of the transformer when it is working through the induction coil. The first temporary storage device 200 of the loading unit refers to a storage mechanism for buffering the product to be tested, which can be specifically implemented by a vertical stacking structure combined with a lifting platform, so that the product to be tested always maintains a graspable height. The second temporary storage device 300 and the third temporary storage device 400 of the unloading unit refer to sorting mechanisms for classifying and storing the test results, which can be specifically implemented by independently controlled lifting platforms to ensure physical isolation of products of different qualities. The transfer robot 500 refers to an actuator for performing spatial position transfer of the product, which can be specifically implemented by combining a vacuum suction cup 520 component with a multi-axis drive system, and completes product grasping and placement through a preset motion trajectory.

[0027] Specifically, the planar transformer to be tested is stored vertically in the loading unit through the first temporary storage device 200, and the lifting drive continuously adjusts the stacking height to ensure that the transfer robot 500 can always obtain the top product. When the detection unit 100 completes the current test, the transfer robot 500 transfers the product to be tested in the loading unit to the detection station. After the detection unit 100 obtains the test data, the transfer robot 500 transfers the product to the temporary storage device corresponding to the unloading unit according to the judgment result. The second temporary storage device 300 and the third temporary storage device 400 respectively manage the product stacking height through independent lifting mechanisms to avoid cross-contamination between qualified and unqualified products. In the entire process, the product flow path forms a closed loop, and the working rhythm of each unit is coordinated and synchronized through the central control system.

[0028] Compared to existing technologies, traditional manual testing requires operators to place products one by one, record data, and manually sort them, which carries the risk of human error and limits efficiency. This solution replaces manual operations with fully automated equipment. The collaborative operation of the inspection unit 100 and the transfer unit enables continuous testing, and the classified storage design of the temporary storage device ensures precise and controllable product flow. In addition, the modular layout of each unit optimizes the equipment's footprint, and the robot's motion path planning shortens product transfer time.

[0029] Through the above technical solution, this application realizes the full automation of the common-mode noise test of planar transformers, effectively eliminating the efficiency bottlenecks and sorting errors caused by manual operation. The cooperation between the detection unit 100 and the transfer unit significantly improves the test cycle, and the design of the classification and temporary storage device ensures the reliability of product quality traceability. The coordinated operation of various functional modules not only improves test stability, but also provides a hardware foundation for the automatic collection and storage of test data, meeting the high standards of product testing in the field of modern electronic manufacturing.

[0030] The present application further proposes that the first temporary storage device 200 is provided with a feeding position, a first temporary storage table 210 and a first lifting drive member 220. The feeding position is located above the first temporary storage table 210. Multiple planar transformers to be tested are stacked vertically on the first temporary storage table 210. The output end of the first lifting drive member 220 is connected to the first temporary storage table 210. The first lifting drive member 220 can drive the first temporary storage table 210 to adjust its position in the vertical direction so that the planar transformer to be tested located at the top reaches the feeding position.

[0031] Among them, the feeding position refers to the position where the material is taken away, which can be specifically achieved by using a platform structure of fixed height, and its horizontal coordinates match the material taking path of the manipulator. This position is set above the temporary storage table, and the top material is automatically aligned by gravity, reducing the lateral positioning error. The first temporary storage table 210 refers to a supporting component for stacking the material to be tested. Specifically, a support plate structure with a guide column can be used, and a limiting protrusion is provided on its surface to prevent the material from slipping. The vertical stacking method achieves self-stabilization through the weight of the material, avoiding the complex partition structure required for horizontal arrangement. The first lifting drive member 220 refers to the power source that drives the movement of the temporary storage table. Specifically, a servo motor can be used in combination with a ball screw mechanism, and closed-loop control can be achieved through encoder feedback to accurately adjust the height of the temporary storage table to compensate for changes in the thickness of the material stack.

[0032] Specifically, multiple planar transformers are stored vertically stacked on a first temporary storage table 210, initially at its lowest position. After the robot removes the material from the top, the first lift drive 220 raises the temporary storage table a fixed distance, allowing the next layer of material to reach the feed level. This distance is equal to the thickness of a single layer of material, and millimeter-level accuracy is achieved through pulse control of the servo motor. During the stacking process, guide posts ensure that the central axis of each layer of material is consistently aligned with the feed level. When the material is about to run out, the control system triggers an alarm to prompt refill, thereby maintaining continuous feeding.

[0033] Furthermore, the first temporary storage device 200 is equipped with a detector. Specifically, the detector is located at the loading position to detect the presence of material. When the detector detects that a planar transformer to be inspected has been placed at the loading position, the first lifting drive 3220 drives the first temporary storage table 210 to rise by the height of the workpiece, allowing the next layer of material to reach the feeding position.

[0034] Compared with existing technologies, traditional manual feeding requires operators to frequently move materials to the reclaiming station, resulting in large deviations in the reclaiming position and production line pauses caused by gaps in refilling. This solution uses vertical stacking and automatic lifting and adjustment to consistently maintain materials at a fixed reclaiming location, eliminating positioning errors and efficiency fluctuations caused by manual intervention. Replenishing materials requires only bulk stacking onto a temporary storage table, rather than placing them piece by piece, significantly reducing operational complexity.

[0035] Through the above technical solution, this application achieves automated and continuous supply of test materials, ensuring that each planar transformer reaches the precise location for the manipulator to pick up the material. The dynamic compensation mechanism for material stacking height eliminates the need for manual adjustment of the temporary storage table height, improving equipment operational stability. Vertical storage reduces the equipment's footprint, adapting to the requirements of high-density production line layouts. The closed-loop control lifting mechanism achieves feed position positioning accuracy of ±0.1 mm, meeting the precision pick-and-place requirements of automated testing equipment.

[0036] The present application further proposes that a second temporary storage device 300 and a third temporary storage device 400 are provided in the unloading unit. Each temporary storage device includes a unloading position, a second temporary storage table 310 and a second lifting drive member 320. The unloading position is located above the second temporary storage table 310. Multiple inspected planar transformers are stacked on the second temporary storage table 310 in the vertical direction. The output end of the second lifting drive member 320 is connected to the second temporary storage table 310. The second lifting drive member 320 drives the second temporary storage table 310 to adjust its position in the vertical direction so that the inspected planar transformer at the top leaves the unloading position.

[0037] The second temporary storage table 310 refers to a platform structure for carrying and temporarily storing the inspected planar transformers. Specifically, it can be implemented by a metal plate with a positioning groove or a guide structure, and its surface can be provided with an anti-slip texture to increase friction. The second lifting drive 320 refers to an actuator that provides vertical motion drive, such as a structure using a servo motor and a ball screw. Its travel range can be set according to the stacking height of the planar transformers. The unloading position refers to the target position for receiving the transfer robot 500 to place the planar transformer. Its height is aligned with the working plane of the transfer robot 500. For example, the position information is monitored and fed back in real time by a sensor.

[0038] Specifically, when the planar transformer that has completed inspection is transferred to the unloading unit, the second lifting drive 320 drives the second temporary storage table 310 to descend by a distance of the workpiece height, so that the current top planar transformer is out of the occupied state of the unloading position. After the transfer robot 500 places the planar transformer at the unloading position, the second temporary storage table 310 automatically rises to the next receiving position. As the second temporary storage table 310 continues to rise and fall, multiple planar transformers are stacked in sequence in the vertical direction until the preset storage capacity is reached. In this process, good products and defective products are transferred to the third temporary storage device 400 and the second temporary storage device 300 respectively. The physical isolation of the two types of products is achieved through an independent lifting mechanism to avoid confusion.

[0039] Furthermore, the second temporary storage device 300 and the third temporary storage device 400 are spaced apart in a direction away from the detection unit to prevent defective products from falling into the storage mechanism of qualified products during transportation, which helps to further ensure the accuracy of product classification.

[0040] Furthermore, both the second temporary storage device 300 and the third temporary storage device 400 are equipped with detectors. Specifically, the detector is located at the material unloading position to detect the presence of material. When the detector detects that a planar transformer has been placed at the unloading position, the second lifting drive 320 lowers the second temporary storage table 310 by the height of the workpiece, removing the currently occupied planar transformer from the unloading position.

[0041] Compared to existing technologies, traditional manual sorting relies on operators manually handling and sorting, which is inefficient and prone to errors. Existing equipment often uses horizontally arranged storage racks for temporary storage, which takes up a lot of space and lacks automatic height adjustment. This solution combines vertical stacking with a lift drive to increase storage density within a limited space. Automated lift control ensures precise product positioning, eliminating the risk of missorting caused by manual intervention.

[0042] Through the above technical solution, this application realizes the automated classified storage of inspected planar transformers, effectively preventing the mixing of good and defective products. The coordinated action of the lifting drive and the temporary storage table enables products to be continuously received and stacked in an orderly manner, avoiding interruptions in the production rhythm caused by manual handling. The vertical space utilization method reduces the equipment footprint and is suitable for high-density production line layout. In addition, the classified storage process is automatically associated with the inspection data, providing a physical identification basis for product traceability.

[0043] The present application further proposes that a marking unit 600 is set between the detection unit 100 and the unloading unit. The marking unit 600 includes a marking device 610 and a loading device 620. The marking device 610 is arranged above the loading device 620. The loading device 620 is used to fix the planar transformer that has completed the inspection and is to be marked. The marking device 610 sets an identification code on the surface of the planar transformer according to the inspection results.

[0044] The marking unit 600 is an automated marking system comprised of a marking device 610 and a loading device 620. Specifically, it can be implemented using a laser marking machine in conjunction with a pneumatic fixture, and is used to permanently mark the product surface after inspection. The loading device 620 is a mechanism that supports and secures the workpiece to be marked. Specifically, it can be a combination of a vacuum adsorption platform and positioning pins, maintaining the positioning accuracy of the planar transformer through negative pressure adsorption. The identification code is a recognizable mark containing the test result information. Specifically, it can be in the form of a QR code or barcode, formed on the workpiece surface by laser etching or inkjet printing.

[0045] Specifically, after common-mode noise testing is completed, the planar transformer is transferred by the transfer robot 500 to the loading device 620. The vacuum plate 622 is activated to generate negative pressure, securing the workpiece to the loading base 621. The detection system transmits the test results to the control system of the marking device 610, which drives the laser marking head to generate a QR code on the workpiece surface containing the detection time, test value, and pass status. After marking, the recognition unit 800 scans the QR code to verify the accuracy of the information. The transfer robot 500 then classifies the workpieces and transfers them to the corresponding temporary storage device based on the verification results.

[0046] Compared with existing technologies, traditional manual labeling methods require operators to visually inspect results and then manually apply labels, which can lead to errors and inefficiencies. This solution directly links test data with the marking system, instantly converting test results into physical labels. This avoids data gaps caused by manual intervention and ensures that each product's test data strictly corresponds to the physical label.

[0047] Through the above technical solution, this application realizes the automatic association between the test results and the actual product, solves the risk of mixing caused by the low efficiency of manual differentiation, and at the same time provides a verifiable physical carrier for quality traceability through a unique identification code, so that unqualified products can be accurately located to specific test batches and test data.

[0048] The present application further proposes that the loading device 620 includes a loading seat 621 and an adsorption mechanism, the adsorption mechanism includes an adsorption plate 622 and a vacuum negative pressure machine arranged on the loading seat 621, the vacuum negative pressure machine is connected to the adsorption plate 622, and the adsorption plate 622 is used to adsorb and fix the planar transformer to be marked.

[0049] The carrier 621 is a fixed platform that supports the planar transformer. It can be made of aluminum alloy or hard plastic. Positioning grooves or limiting ribs can be provided on its surface to ensure that the planar transformer is placed in a preset position. The adsorption plate 622 is a plate-like structure with multiple adsorption holes or adsorption areas. Specifically, it can be connected to a vacuum negative pressure machine by opening an array of through holes on the surface to form a negative pressure adsorption force, thereby achieving uniform adsorption of the bottom surface of the planar transformer. The vacuum negative pressure machine is a pneumatic device that can generate a stable negative pressure. Specifically, a diaphragm pump or a rotary vane pump can be used. The suction power is adjusted to control the adsorption force strength to meet the fixing requirements of planar transformers of different sizes or weights.

[0050] Specifically, after the planar transformer is placed on the adsorption plate 622 of the carrier 621, the vacuum negative pressure machine is activated and forms a negative pressure area on the surface of the adsorption plate 622. The suction force generated by the adsorption holes tightly adheres the bottom surface of the planar transformer to the surface of the adsorption plate 622. The synergistic effect of the rigid support of the carrier 621 and the adsorption force can suppress the lateral displacement or tilt of the planar transformer during the marking process, while avoiding surface indentations or deformation caused by traditional mechanical clamping. When the marking device 610 applies the mark to the surface of the planar transformer, the continuous operation of the adsorption plate 622 and the vacuum negative pressure machine can maintain a fixed state, ensuring that the marking position is consistent with the preset coordinates.

[0051] Compared with existing technologies, traditional planar transformer marking often relies on manual clamps or spring-loaded clamps, which can easily cause product deviation due to uneven clamping force, and frequent operation can easily cause wear on the clamping jaws. This solution, however, replaces mechanical contact fixation with vacuum adsorption, eliminating the impact of clamping force on the product surface while ensuring stable fixation through uniform negative pressure distribution. This solution is particularly suitable for automated planar transformer production lines, where surface flatness is a high requirement.

[0052] Through the above technical solution, this application solves the problem of misalignment of markings caused by unstable fixation during high-speed marking of planar transformers. Non-contact fixation is achieved through the coordinated action of vacuum adsorption and the loading base 621, thereby avoiding damage to the product surface. At the same time, the position repeatability accuracy of automated marking is improved, ensuring the accurate correspondence between the identification code and the test results.

[0053] This application further proposes that the marking unit 600 also includes a three-axis moving device, and one of the loading base 621 and the marking device 610 is connected to the three-axis moving device; or, the marking unit 600 also includes a three-axis moving device, and the loading base 621 and the marking device 610 are both connected to the three-axis moving device.

[0054] The three-axis motion device refers to a drive mechanism capable of linear displacement in three orthogonal directions (X, Y, and Z). Specifically, it can be implemented using a motion platform composed of a ball screw, linear guides, and servo motors. It achieves precise positioning of spatial coordinates through multi-axis linkage control. The carrier 621 is a positioning base used to secure the planar transformer. Specifically, it can be implemented using a metal fixture with a vacuum adsorption function, which uses adsorption force to maintain the workpiece's position during the marking process. The marking device 610 is a mechanism used to form a mark on the product surface. Specifically, it can be implemented using a laser marking head or a pneumatic needle marker. It generates the corresponding character or graphic mark based on the detection results.

[0055] Specifically, when only the carrier 621 is equipped with a three-axis motion device, the spatial position of the carrier 621 is adjusted to precisely align the marking area of ​​the planar transformer with the fixed working focus of the marking device 610, eliminating the impact of workpiece clamping errors on the marking position. When both the carrier 621 and the marking device 610 are equipped with independent three-axis motion devices, the carrier 621 can perform coarse positioning compensation, while the marking device 610 performs fine adjustment positioning. The two work together to achieve dynamic tracking and positioning, adapting to the marking requirements of workpieces of different sizes. Both implementations replace the passive tolerance method of traditional mechanical positioning with active adjustment of the spatial coordinate system, solving the problem of mark offset caused by accumulated workpiece tolerances.

[0056] Compared to existing technologies, traditional fixed marking mechanisms rely on mechanical positioning accuracy and are unable to compensate for fluctuations in incoming workpiece dimensions and clamping errors, resulting in mark position deviations exceeding the allowable range. This solution introduces a programmable, three-axis motion device to create an active positioning compensation mechanism, enabling the marking device 610 to establish a dynamic alignment with the workpiece surface, eliminating positioning failures caused by equipment assembly errors or workpiece deformation.

[0057] Through the above technical solution, this application achieves precise positioning of markings on the surface of planar transformers, ensuring consistent marking positions across product batches and eliminating the need for manual rechecking and adjustment. This solution automatically compensates for workpiece dimensional tolerances and clamping position deviations, improving the equipment's compatibility with products of varying specifications. Furthermore, through digital control of the coordinate system, it enables rapid switching of marking paths, significantly improving production line changeover efficiency.

[0058] The present application further proposes to set an identification unit 800 between the marking unit 600 and the unloading unit. The identification unit 800 is electrically connected to the transfer robot 500. The identification unit 800 is used to identify the identification code set on the surface of the planar transformer. The transfer robot 500 transfers the planar transformer to the second temporary storage device 300 or the third temporary storage device 400 according to the identification information of the identification unit 800.

[0059] Among them, the identification unit 800 refers to a device that obtains the surface identification code information of the planar transformer through an optical or image processing device. Specifically, it can be implemented by an industrial camera in conjunction with a QR code scanning module to convert the identification code content into a data signal that can be recognized by the control system.

[0060] The identification code refers to a coding mark containing the test result information, which can be implemented by a QR code or barcode formed by laser engraving or inkjet printing, and is used to uniquely associate the test data of each planar transformer.

[0061] Among them, the electrical connection refers to the real-time data transmission channel established between the identification unit 800 and the transfer robot 500, which can be specifically implemented using an industrial bus or a wireless communication module to synchronously transmit the identification results to the control system of the transfer robot 500.

[0062] Specifically, after the planar transformer completes testing, the marking unit 600 forms a corresponding identification code on the surface based on the test results. The recognition unit 800 scans the identification code, parses the test result status information, and transmits this information to the control unit of the transfer robot 500. Based on the received pass or fail signal, the transfer robot 500 selects to transfer the planar transformer to the third temporary storage device 400 or the second temporary storage device 300. The entire process requires no human intervention, and the secondary verification mechanism of the identification code ensures that the sorting action strictly corresponds to the test result, avoiding misjudgment.

[0063] Compared with existing technologies, traditional methods rely on manual visual inspection and classification, which suffer from low efficiency, high error rates, and an inability to establish a data traceability chain. This solution uses automated identification code recognition and linked sorting control to achieve digital recording of inspection results and precise execution of sorting operations, eliminating the uncontrollable factors in manual operation.

[0064] Through the above technical solution, this application realizes closed-loop control of detection results and sorting actions, the classification accuracy of planar transformers is effectively improved, and the detection data is traceable throughout the entire process through identification codes, solving the technical problems of low efficiency, easy errors and difficult product data management of manual sorting.

[0065] The present application further proposes that the transfer unit also includes a linear moving module 700, and two transfer robots 500 are installed on the linear moving module 700, one of the two transfer robots 500 is used to transfer the planar transformer to be inspected, and the other of the two transfer robots 500 is used to transfer the planar transformer that has been inspected.

[0066] Among them, the linear motion module 700 refers to a mechanical structure used to drive the transfer robot 500 to reciprocate in the horizontal direction. It can be implemented by a linear guide rail or a belt transmission mechanism, and powered by a servo motor or a stepper motor to achieve precise positioning.

[0067] Among them, the transfer robot 500 refers to an automated device for clamping and transporting planar transformers, which can be specifically implemented by a vacuum suction cup 520 or a pneumatic clamping claw structure. The suction cup 520 or the clamping claw realizes the grasping and releasing of materials through negative pressure or air pressure control.

[0068] Specifically, the linear motion module 700 acts as the motion carrier of the transfer robot 500, enabling the two robots to move synchronously on the same track, shortening the time it takes for a single robot to travel between different workstations. The two transfer robots 500 independently perform the transfer tasks of the items to be inspected and the inspected items, achieving process separation through division of labor and avoiding confusion that may arise when the same robot transfers materials in different states. The linear motion module 700 drives the two robots along a preset path through a closed-loop control system, allowing them to reach the target positions of the loading unit, the inspection unit 100, and the unloading unit, respectively, to complete the precise grasping and placement of materials.

[0069] Compared to existing technologies, traditional solutions typically use a single manipulator for material loading and unloading operations, requiring frequent switching of grip targets and adjustment of movement paths, resulting in low transfer efficiency and the risk of cross-contamination between inspected and uninspected items. This application utilizes two independent manipulators integrated into the linear motion module 700 to achieve parallel transfer of inspected and uninspected items, reducing the manipulator's idle waiting time and completely eliminating the possibility of material mixing through physically isolated transfer paths.

[0070] Through the above technical solution, this application can significantly improve the transfer efficiency of planar transformers during the testing process, shorten the overall testing cycle through the parallel operation of two manipulators, and completely avoid the risk of mixing between the products to be tested and the products that have been tested through the independent transfer path design, thereby ensuring the reliability and stability of the testing process.

[0071] The present application further proposes that the detection unit 100 includes an upper detection mold 110 and a lower detection mold 120. The upper detection mold 110 and the lower detection mold 120 can be close to or away from each other. The upper detection mold 110 is crimped against the top of the planar transformer to be detected, and the lower detection mold 120 is abutted against the bottom of the planar transformer to be detected.

[0072] The upper detection module 110 refers to a contact module located on the top of the planar transformer under test, which can be implemented by a metal plate structure with elastic probes. The probes are crimped to form a reliable electrical connection with the top terminals of the planar transformer.

[0073] The lower detection module 120 refers to a support module located at the bottom of the planar transformer under test, which can be implemented by a rigid supporting platform with an insulating coating, and limits the horizontal displacement of the planar transformer through abutment action and provides mechanical support.

[0074] Here, moving closer to or farther from each other refers to the coordinated movement of the upper and lower detection dies 120 , which can be specifically achieved by using a synchronous guide mechanism driven by a linear cylinder or a servo motor. The range of motion can cover planar transformers of different thickness specifications.

[0075] Specifically, during the test, the lower detection mold 120 first rises to a preset height to position the bottom of the planar transformer, and then the upper detection mold 110 moves downward to apply vertical pressure to the top of the planar transformer. During the crimping process, the elastic probe of the upper detection mold 110 deforms to compensate for the assembly tolerance and ensure that all test contacts are in close contact with the terminals of the planar transformer. The lower detection mold 120 abutting the bottom offsets the reaction force generated by the crimping force through rigid support to prevent the device under test from tilting or sliding. After the test is completed, the upper detection mold 110 is lifted to release the crimping state, and the lower detection mold 120 is synchronously lowered to disengage from the abutment position, providing operating space for the transfer robot 500 to move out the device under test.

[0076] Compared to existing technologies, traditional fixed fixtures cannot adaptively adjust the clamping gap, which can easily lead to poor contact or device damage. This solution achieves dynamic clamping control through the coordinated displacement of the upper and lower test molds. This not only adapts to the testing requirements of planar transformers of varying thicknesses, but also improves the stability of the test signal through a combined contact method of crimping and abutting. The existing single-sided crimping method can easily cause the planar transformer to tilt, while the rigid bottom support of this solution effectively maintains the horizontal position of the device under test.

[0077] Through the above technical solution, this application solves the problem of contact resistance fluctuation caused by unstable clamping during common-mode noise testing of planar transformers, eliminating test data deviation caused by device displacement. The phased action of the upper and lower detection molds achieves lossless clamping and rapid release of the device under test, providing the basic conditions for continuous operation in the automated test line. The dual contact mechanism of crimping and abutting ensures a low-impedance connection state in the test loop, significantly improving the accuracy of noise signal acquisition.

[0078] The present application further proposes that the detection unit 100 includes an upper detection mold 110 and a lower detection mold 120. The upper detection mold 110 and the lower detection mold 120 can be close to or away from each other. The upper detection mold 110 and the lower detection mold 120 abut against the bottom of the planar transformer to be detected, and the upper detection mold 110 is crimped against the top of the planar transformer to be detected.

[0079] The upper detection module 110 refers to the contact module arranged on the top of the planar transformer. Specifically, it can be implemented by a crimping mechanism with elastic probes, and a stable electrical contact is formed by applying a load in the vertical direction. The lower detection module 120 refers to the support module arranged at the bottom of the planar transformer. Specifically, it can be implemented by a rigid platform with positioning grooves, and a reference support surface is formed by plane limit. The movement of approaching or moving away from each other is achieved by a hydraulic cylinder or servo motor drive to adapt to the clamping requirements of test pieces of different thicknesses. The top crimping uses a pneumatic actuator with a pressure sensor to monitor the contact pressure in real time to avoid overload.

[0080] Specifically, when the planar transformer is transported to the inspection station, the lower inspection mold 120 first completes the bottom reference alignment through the planar positioning mechanism. Then the upper inspection mold 110 descends vertically under the control of the drive device, and the elastic probe array arranged at its bottom forms multi-point contact with the test points on the top of the planar transformer. At the same time, the built-in support platform of the lower inspection mold 120 fine-tunes the displacement upward so that the bottom surface of the test piece is completely fitted with the support surface. The coordinated action of the upper and lower molds forms a sandwich clamping structure, in which the lower mold provides a rigid support reference, and the upper mold applies controllable pressure to ensure stable contact impedance between the test probe and the terminal. This structure replaces manual alignment operations with mechanical positioning to eliminate poor contact caused by human factors.

[0081] Compared with existing technologies, traditional manual testing relies on the operator to manually place the DUT and adjust the probe position, resulting in uneven clamping force and low positioning accuracy. This solution, however, achieves automated positioning through mechanical linkage between the upper and lower test modules. Contact pressure is controlled by a closed-loop sensor. The contact area between the test probe and the terminal is approximately three times greater than with manual operation, and the contact resistance fluctuation range is reduced from ±15% to ±2%. The planar support structure of the lower test module 120 creates an equipotential surface between the bottom surface of the DUT and the reference ground, effectively suppressing common-mode interference signals.

[0082] Through the above technical solution, this application realizes the fully automatic and stable clamping of the test piece during the high-frequency noise test, solving the problem of contact resistance fluctuation caused by manual operation. The synergistic effect of the upper and lower detection modules enables the test probe to form a reliable electrical connection with the terminal, the repeatability of the test data is improved to 99.8%, and the single-piece test time is shortened to 1 / 5 of the manual operation. The coordinated design of the bottom support structure and the top crimping mechanism is compatible with different models of planar transformers with a thickness range of 2-8 mm, and the equipment utilization rate is increased to more than 95%.

[0083] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative uses of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0084] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A fully automatic test device for common mode noise of planar transformers, characterized in that: include: A detection unit for performing common mode noise testing on planar transformers; A loading unit is located on the loading side of the detection unit, and the loading unit is provided with a first temporary storage device, and the first temporary storage device is used to temporarily store the planar transformer to be detected; a blanking unit located on a blanking side of the detection unit, the blanking unit being provided with a second temporary storage device and a third temporary storage device, the second temporary storage device and the third temporary storage device being respectively used to temporarily store planar transformers that fail the test and planar transformers that pass the test, the second temporary storage device and the third temporary storage device being spaced apart in a direction away from the detection unit; The transfer unit includes a transfer robot for transferring the planar transformer, and the transfer robot can realize the flow of the planar transformer between the loading unit, the detection unit, and the unloading unit.

2. A planar transformer common mode noise fully automatic test equipment according to claim 1, characterized in that: The first temporary storage device is provided with a feeding position, a first temporary storage table and a first lifting drive member. The feeding position is located above the first temporary storage table. Multiple planar transformers to be tested are stacked on the first temporary storage table in the vertical direction. The output end of the first lifting drive member is connected to the first temporary storage table. The first lifting drive member can drive the first temporary storage table to adjust its position in the vertical direction so that the planar transformer to be tested located at the top reaches the feeding position.

3. The fully automatic test equipment for common mode noise of a planar transformer according to claim 1, characterized in that: The second temporary storage device and the third temporary storage device are both provided with a material unloading position, a second temporary storage table and a second lifting drive. The material unloading position is located above the second temporary storage table. A plurality of inspected planar transformers are stacked on the second temporary storage table in a vertical direction. The output end of the second lifting drive is connected to the second temporary storage table. The second lifting drive can drive the second temporary storage table to adjust its position in the vertical direction so that the inspected planar transformer located at the top moves away from the material unloading position.

4. The fully automatic test equipment for common mode noise of a planar transformer according to claim 1, characterized in that: The detection unit and the unloading unit are provided with a marking unit, and the marking unit includes a marking device and a loading device. The marking device is arranged above the loading device, and the loading device is used to fix the planar transformer that has completed the inspection and is to be marked. The marking device sets an identification code on the surface of the planar transformer according to the inspection results.

5. A planar transformer common mode noise fully automatic test equipment according to claim 4, characterized in that: The loading device includes a loading seat and an adsorption mechanism. The adsorption mechanism includes an adsorption plate and a vacuum negative pressure machine arranged on the loading seat. The vacuum negative pressure machine is connected to the adsorption plate. The adsorption plate is used to adsorb and fix the planar transformer to be marked.

6. The fully automatic test equipment for common mode noise of a planar transformer according to claim 5, characterized in that: The marking unit further includes a three-axis moving device, and one of the carrier and the marking device is connected to the three-axis moving device; or, The marking unit further includes a three-axis moving device, and the loading base and the marking device are both connected to the three-axis moving device.

7. The fully automatic test equipment for common mode noise of a planar transformer according to claim 4, characterized in that: An identification unit is provided between the marking unit and the unloading unit. The identification unit is electrically connected to the transfer robot. The identification unit is used to identify the identification code set on the surface of the planar transformer. The transfer robot can transfer the planar transformer to the second temporary storage device or the third temporary storage device according to the identification information of the identification unit.

8. The fully automatic test equipment for common mode noise of planar transformers according to claim 7, characterized in that: The transfer unit also includes a linear moving module, and two transfer robots are installed on the linear moving module. One of the two transfer robots is used to transfer the planar transformer to be tested, and the other of the two transfer robots is used to transfer the planar transformer that has been tested.

9. The fully automatic test equipment for common mode noise of a planar transformer according to claim 1, characterized in that: The transfer robot includes a mounting plate and a plurality of suction cups arranged on the mounting plate. The suction cups are movably connected to the mounting plate, the positions of the suction cups can be adjusted on the mounting plate, and the suction cups are connected to an external negative pressure mechanism.

10. The fully automatic test equipment for common mode noise of planar transformers according to claim 1, characterized in that: The detection unit includes an upper detection mold and a lower detection mold, the upper detection mold and the lower detection mold can approach or move away from each other, the lower detection mold abuts against the bottom of the planar transformer to be detected, and the upper detection mold is crimped against the top of the planar transformer to be detected.

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