A testing device for functional coating of induction cooker glass-ceramic

Abstract

The present invention relates to the technical field of coating testing devices, and specifically discloses a functional coating testing device for induction cooker microcrystalline glass, comprising a base, a detection box located on the base, a detection cavity provided inside the detection box, a test bench provided inside the detection cavity, the test bench comprising a test actuator and a test placement seat; the test actuator comprises a friction disc, an electromagnetic coil is provided inside the friction disc, and spirally distributed grooves are provided at the bottom of the friction disc; the test placement seat comprises a loading platform with a coating panel to be tested clamped at a position corresponding to the friction disc in the middle of the top, raised retaining rings are provided around the top of the loading platform, a nozzle corresponding to the coating panel to be tested is provided on the upper part of the raised retaining ring, the nozzle is connected to a storage tank provided at the bottom of the loading platform through a pressurized pipe, and magnetorheological abrasive is stored in the storage tank; the device has the advantages of high test accuracy and realistic test simulation.

Description

Technical Field

[0001] The invention relates to the technical field of coating testing devices, and in particular discloses a functional coating testing device for induction cooker microcrystalline glass. Background Art

[0002] In daily use, the functional coating on the surface of an induction cooker's glass-ceramic panel must withstand multiple complex conditions, including sliding friction from cooking utensils, high-temperature thermal shock, and oil corrosion. The performance of the coating directly affects the panel's service life, scratch resistance, and ease of cleaning. If the coating wears off or falls off prematurely, it will not only reduce the induction cooker's aesthetics, but may also expose the panel substrate, affecting electromagnetic induction efficiency and even posing a safety hazard. Therefore, comprehensive performance testing of the coating on the glass-ceramic panel is a key step in ensuring the quality and safety of induction cookers. Among the many performance indicators, wear resistance is particularly important. When the glass-ceramic panel is in use, the frequent dragging of pots and pans and the scratching during cleaning will cause wear to the coating.

[0003] Currently, existing devices for testing the wear resistance of coatings on induction cooker glass-ceramic panels mostly use traditional fixed-material friction discs for testing. This type of device simulates the wear process by directly contacting and rotating the friction disc with the coating surface. However, this method has significant drawbacks: First, the friction working conditions are single. The traditional friction disc material and surface roughness are fixed, and it is impossible to simulate the diverse friction coefficients of different pots (such as iron pots, stainless steel pots) or in scenarios containing particulate impurities, resulting in a disconnect between the test results and actual usage conditions; second, there is a lack of wear medium management. Coating debris generated during the test is likely to remain in the test area, interfering with subsequent test data. Furthermore, the wear medium cannot be dynamically replenished or replaced, affecting the accuracy and repeatability of the test. Summary of the Invention

[0004] The purpose of the present invention is to provide an induction cooker glass-ceramic functional coating testing device to solve one of the above-mentioned technical problems existing in the prior art.

[0005] Specifically, the present invention is achieved through the following technical solutions:

[0006] A device for testing functional coatings of induction cooker glass-ceramics, comprising a base, a test box located on the base, a test cavity provided inside the test box, a test bench provided inside the test cavity, and a test actuator and a test placement seat;

[0007] The test execution mechanism includes a friction disc, an electromagnetic coil is provided inside the friction disc, and spiral grooves are provided at the bottom of the friction disc; the test placement seat includes a loading platform with a coating panel to be tested clamped at a position corresponding to the friction disc in the middle of the top, a raised retaining ring is provided around the top of the loading platform, and a nozzle corresponding to the coating panel to be tested is provided on the upper part of the raised retaining ring. The nozzle is connected to a storage tank provided at the bottom of the loading platform through a pressurized pipe, and the storage tank stores magnetorheological abrasive;

[0008] When conducting a coating wear resistance test, the friction disc moves downward toward the loading platform and rotates, and the nozzle sprays magnetorheological abrasive onto the surface of the loading platform. After the friction disc approaches the loading platform, it is blocked by the raised retaining ring to form an annular gap for accommodating the magnetorheological abrasive. The electromagnetic coil is energized to generate an electromagnetic adsorption force, which drives the magnetorheological abrasive to perform a wear resistance test on the coating panel to be tested through the rotation of the friction disc.

[0009] It should be noted that this solution achieves continuous adjustment of the friction coefficient through electromagnetic control of the abrasive state, and can accurately reproduce the friction characteristics of different materials such as iron pots and stainless steel pots (that is, by adjusting the electromagnetic field intensity to change the magnetorheological abrasive state and adjust its friction coefficient, it can simulate the friction of pots made of different materials), meet the parameter requirements of different test standards, and solve the problem of debris accumulation in traditional tests through friction disks and spirally distributed grooves, effectively eliminating debris interference, ensuring a stable test environment, and improving the data accuracy of test results.

[0010] Furthermore, a lifting drive device is provided on the top of the friction disc, and the lifting drive device includes a vertically arranged lifting push rod, and a motor is installed on the lifting end of the lifting push rod through a connecting flange, and the output end of the motor is connected to the top of the friction disc.

[0011] Through the above-mentioned technical solution, this application solves the problem of non-adjustable contact pressure of the friction disc in traditional testing devices, and realizes the wear resistance performance test of the coating under different pressure conditions. Specifically, through the precise displacement control of the lifting push rod, the pressure effect of the weight difference of the pot on the coating in actual use can be reproduced; through the independent adjustment of the motor speed and downward force, the friction scenario of the pot being dragged quickly or moved slowly can be simulated. In addition, the rigid connection structure avoids pressure fluctuations caused by deformation of the transmission system, improving the repeatability and reliability of the test data.

[0012] Preferably, the electromagnetic coil is mounted on the bottom of a connecting disk located inside the friction disk, and the outside of the connecting disk is rotatably engaged with the inside of the friction disk via embedded balls.

[0013] Through the above technical solution, the mechanical interference between the electromagnetic coil and the rotating friction disk is effectively eliminated, so that the magnetorheological abrasive forms a controllable wear path under the dual effects of the stable magnetic field and the spirally distributed grooves, thereby improving the repeatability and data reliability of the coating wear resistance test.

[0014] Preferably, the opening of the groove extends to the edge of the friction disk, and the spiral direction of the groove is opposite to the rotation direction of the friction disk.

[0015] This technical solution effectively eliminates uneven abrasive distribution and debris retention, ensuring controllable contact pressure and motion trajectory between the abrasive and the coating during testing. This design not only improves the accuracy of test data but also simulates the complex friction conditions experienced in actual use, such as the interaction between pot sliding and impurity particles, providing more realistic experimental conditions for coating performance evaluation.

[0016] Further preferably, an overflow groove is provided on the inner ring surface of the raised retaining ring at a position corresponding to the coating panel to be tested, the cross section of the overflow groove is V-shaped, and the bottom of the overflow groove is connected to the storage tank through a plurality of return pipes, and a screen is provided at the top opening of the return pipe.

[0017] Through the above technical solution, this application realizes the dynamic recovery and purification of magnetorheological abrasives during the test process, effectively preventing coating debris from being retained in the test area and ensuring the accuracy of subsequent test data. At the same time, the recycling of abrasives reduces the frequency of medium replenishment and improves test efficiency and resource utilization.

[0018] Furthermore, the test bench also includes a wear detection unit, and the wear detection unit and the test execution mechanism are both connected to a switching mechanism located in the detection chamber. After the test of the test execution mechanism is completed, the switching mechanism switches to the wear detection unit to detect the surface of the coating panel to be tested.

[0019] This technical solution seamlessly integrates coating wear resistance testing with wear detection, improving testing efficiency while ensuring the continuity and accuracy of wear data. The coating surface condition is immediately monitored in situ after the test, preventing external factors from interfering with the test results and providing reliable dynamic data support for coating performance evaluation.

[0020] Furthermore, the switching mechanism includes a switching turntable that is vertically rotatable and arranged inside the detection chamber. The lower part of the outer surface of the switching turntable is used to install the test execution mechanism, and the upper part of the switching turntable is used to install the wear detection unit.

[0021] Through the above technical solution, the wear resistance test and wear detection process are automatically connected. The test actuator and the detection unit complete the workstation switching through the same turntable, effectively reducing the interruption time of the test process and improving the overall efficiency of the coating performance test. The detection unit can directly collect data after the turntable rotates into place, avoiding the positioning deviation problem caused by manual operation in the traditional solution and ensuring the consistency of the test results.

[0022] Specifically, the wear detection unit includes an infrared visual detection module and a data processing module. The infrared visual detection module is connected to the switching turntable through a rotating platform. The rotating platform is used to drive the infrared visual detection module to collect visual data on the surface wear and coating thickness of the tested coating panel after the test. The data processing module is electrically connected to the infrared visual detection module for receiving visual data and calculating and processing to generate detection results and output them to the external terminal.

[0023] In the above scheme, by integrating the rotation detection structure and automatic data processing function, an integrated test-detection process is realized, the positioning error caused by sample transfer is eliminated, and at the same time, the interference of oil residue in visible light detection on the data is avoided through infrared spectral feature extraction, and the automatic quantitative detection of the wear morphology and thickness change of the coating panel is realized, and the problems of low efficiency of manual observation and large deviation of subjective judgment are further solved.

[0024] As a further preferred embodiment, a heating chamber is provided inside the loading platform at a position corresponding to the coating panel to be tested, and a heater is provided inside the heating chamber via a displacement adjustment platform;

[0025] The displacement adjustment platform includes a displacement slide and a first screw located at the bottom of the displacement slide and with its end extending to the outside of the loading platform. The first screw is rotatably connected to the interior of the heating chamber, and the outer portion of the first screw is provided with a first nut sliding seat connected to the displacement slide. A rack is also installed at the bottom of the heating chamber parallel to the first screw.

[0026] A through slot perpendicular to the length direction of the first screw rod is provided inside the displacement slide, and a second screw rod is rotatably provided inside the through slot. The end of the second screw rod close to the rack extends to the outside of the through slot and is connected to a gear meshing with the rack. The outer surface of the second screw rod is sleeved with a second nut sliding seat that slides in cooperation with the through slot. The second nut sliding seat extends to the outside of the through slot and is connected to the heater.

[0027] Through the above technical solution, the present application can accurately control the temperature field distribution in the test area, thereby realizing dynamic simulation of the instantaneous temperature changes at different positions of the induction cooker panel during the movement of the cooker. At the same time, based on the specific structure of the upper displacement adjustment platform, the motion trajectory of the heater can be dynamically adjusted to match the rotation of the friction disk, thereby effectively reproducing the performance degradation process of the coating under high-temperature friction composite working conditions, thereby accurately evaluating the change law of the wear resistance of the coating material under thermal stress, and providing reliable data support for optimizing the coating process.

[0028] Specifically, a power supply unit is further provided at the bottom of the base, and the power supply unit is used to supply power to the test bench in the detection box.

[0029] Through the above technical solution, the power supply unit can accurately match the power requirements of different modules such as the friction disc drive, electromagnetic coil, heater and wear detection unit, ensuring the power supply stability when the various systems work together during the test, thereby improving the data accuracy and repeatability of the coating wear resistance test, and thus ensuring the normal test work of the test device.

[0030] From the above, it can be seen that the present application provides an induction cooker microcrystalline glass functional coating testing device, which simulates actual friction conditions through the synergistic effect of friction disk and magnetorheological abrasive, dynamically adjusts the abrasive distribution in combination with electromagnetic adsorption force, and integrates heating and automatic detection modules. It can effectively solve the problems of single working conditions, insufficient abrasive management and low detection efficiency of traditional testing devices, and has the advantages of high test accuracy and realistic test simulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of this application, and do not constitute a limitation of the embodiments of the present invention. In the drawings:

[0032] Figure 1 This is a schematic diagram of the overall structure of the present invention, intended to illustrate the working state of the friction disc;

[0033] Figure 2 This is a schematic diagram of the overall structure of the present invention, which is intended to show the working state of the wear detection unit;

[0034] Figure 3 This is a schematic diagram of the internal structure of the friction disc of the present invention, which is intended to show the state of the balls between the connecting disc and the friction disc;

[0035] Figure 4 This is a schematic diagram of the internal structure of the friction disk of the present invention, which is intended to show the state of the electromagnetic coil at the bottom of the connection disk;

[0036] Figure 5 This is a schematic diagram of the bottom structure of the friction disc of the present invention, which is intended to show the state of the bottom groove;

[0037] Figure 6 For the present invention Figure 1 The partially enlarged structural diagram of point A is intended to show the state of the raised retaining ring;

[0038] Figure 7 For the present invention Figure 1 The schematic diagram of the partial enlarged structure at B is intended to show the state of the displacement adjustment platform in the heating chamber;

[0039] Figure 8 This is a schematic diagram of the top view of the displacement adjustment platform of the present invention, which is intended to illustrate the specific structure of the displacement slide;

[0040] Figure 9 This is a schematic top view of the displacement adjustment platform of the present invention, intended to show the state of the displacement slide after adjustment.

[0041] The above-mentioned figures represent: 1. base; 2. detection box; 21. detection chamber; 311. friction disk; 3111. groove; 312. connecting disk; 313. electromagnetic coil; 314. ball; 321. loading platform; 322. raised retaining ring; 3221. overflow groove; 323. nozzle; 324. pressurized pipe; 325. return pipe; 326. storage tank; 41. lifting push rod; 42. motor; 51. heating chamber; 511. first screw rod; 512. first nut sliding seat; 513. displacement slide; 514. through groove; 515. second screw rod; 516. second nut sliding seat; 517. heater; 518. gear; 519. rack; 6. power supply unit; 7. switching turntable. DETAILED DESCRIPTION

[0042] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the examples and accompanying drawings. The exemplary embodiments of the present invention and their descriptions are only used to explain the present invention and are not intended to limit the present invention. It should be noted that the present invention is already in the actual development and use stage.

[0043] In existing technology, the surface coating of induction cooker glass-ceramic panels must withstand multiple, complex operating conditions, including friction from cookware, high temperatures, and oil corrosion. Traditional testing equipment uses a fixed friction disc directly contacting the coating for wear resistance testing. This suffers from a single friction condition and a lack of wear medium management. Fixed friction discs cannot simulate the differences in friction coefficients between different cookware materials or when impurities are present, resulting in significant deviations from actual operating conditions. Furthermore, coating debris generated during testing cannot be promptly removed or replaced with new abrasive, resulting in distorted test data and poor repeatability.

[0044] In order to solve the above problems, the inventors focused on building a variable friction coefficient simulation system and an abrasive circulation control mechanism to address the pain points of traditional devices that cannot dynamically adjust the friction environment and manage wear media. First, the changes in the friction coefficient caused by differences in the materials of cookware in actual use were analyzed, and it was proposed to use the characteristics of magnetorheological materials to achieve controllable adjustment of the hardness and arrangement density of the abrasive. Secondly, in response to the problem of debris accumulation, the synergy between the directional flow of abrasives and the closed test area was studied to form a dynamic replenishment and discharge medium management system. Finally, through the coordination of electromagnetic drive and mechanical structure, a precise simulation of the three-dimensional composite friction effect was achieved. The details are described in the following embodiments. Example

[0045] See also Figures 1 to 6 As shown, this embodiment discloses a device for testing functional coatings of induction cooker glass-ceramics, comprising a base 1, a testing box 2 located on the base 1, a testing cavity 21 being provided inside the testing box 2, a testing table being provided inside the testing cavity 21, and the testing table comprising a testing actuator and a testing placement seat;

[0046] The test execution mechanism includes a friction disc 311, an electromagnetic coil 313 is provided inside the friction disc 311, and a spirally distributed groove 3111 is provided at the bottom of the friction disc 311; the test placement seat includes a loading platform 321 with a coating panel to be tested clamped at a position corresponding to the friction disc 311 at the top center, a raised retaining ring 322 is provided around the top of the loading platform 321, and a nozzle 323 corresponding to the coating panel to be tested is provided on the upper part of the raised retaining ring 322. The nozzle 323 is connected to a storage tank 326 provided at the bottom of the loading platform 321 through a pressurized pipe 324, and the storage tank 326 stores magnetorheological abrasive;

[0047] When conducting a coating wear resistance test, the friction disc 311 moves downward toward the loading platform 321 and rotates, and the nozzle 323 sprays magnetorheological abrasive onto the surface of the loading platform 321. After the friction disc 311 approaches the loading platform 321, it is blocked by the raised retaining ring 322 to form an annular gap for accommodating the magnetorheological abrasive. The electromagnetic coil 313 is energized to generate an electromagnetic adsorption force, which drives the magnetorheological abrasive to perform a wear resistance test on the coating panel to be tested through the rotation of the friction disc 311.

[0048] It should be understood that, in the above embodiment, a coating testing device including a base 1, a test box 2 and an internal test bench is disclosed, wherein the test bench is composed of a test actuator and a test placement seat, the test actuator includes a friction disc 311 with an electromagnetic coil 313 and spirally distributed grooves 3111, the test placement seat includes a loading platform 321 and a raised retaining ring 322, the loading platform 321 is clamped on the top of the panel to be tested, the raised retaining ring 322 is provided with a nozzle 323 and connected to a storage tank 326 through a pipe, and the tank stores magnetorheological abrasive. During the test, the friction disc 311 is pressed down and rotated to form an annular gap with the raised retaining ring 322, and the nozzle 323 sprays magnetorheological abrasive into the annular gap, and at the same time, the electromagnetic coil 313 is energized to absorb the abrasive to form a controllable friction environment;

[0049] Specifically, the spirally distributed grooves 3111 on the bottom of the friction disk 311 refer to a continuous spiral channel structure machined on the bottom surface of the disk body, which can be achieved by CNC milling. This structure forms a directional fluid channel during rotation, guiding the abrasive to move along a spiral path. The electromagnetic coil 313 refers to a conductive winding embedded in the friction disk 311, which can be specifically made of copper wire wound into a ring coil, and generates an axial magnetic field when energized. The raised retaining ring 322 refers to an annular raised structure surrounding the edge of the loading platform 321, which can be specifically formed by stainless steel and can be set to a height of 5-8 mm. The nozzle 323 refers to a plurality of through holes distributed on the upper part of the retaining ring, which can specifically be equidistantly arranged holes with a diameter of 0.5-1 mm, and abrasive injection is achieved by a pressure pump. The annular gap refers to the closed annular space formed between the friction disk 311 and the raised retaining ring 322 after being pressed down, and the gap width can be controlled in the range of 0.2-0.5 mm.

[0050] In specific implementation, during the test, the friction disk 311 is driven to rotate, and the centrifugal force generated by the spirally distributed grooves 3111 causes the magnetorheological abrasive to move accordingly. At the same time, the magnetic field generated by the electromagnetic coil 313 after being energized causes the abrasive particles to align along the direction of the magnetic flux lines. The compaction density of the abrasive particles can be changed by adjusting the current intensity, thereby simulating the friction effect of cookware with different hardnesses. As the nozzle 323 continues to spray new abrasive into the annular gap, the old abrasive is guided by the spirally distributed grooves 3111 and discharged through the edge, thus forming a dynamic cycle. The raised retaining ring 322 not only limits the scattering of the abrasive, but also collects excess abrasive through the overflow groove 3221 and returns it to the storage tank 326. Through the above structure, the abrasive is kept evenly distributed in the test area, while achieving real-time removal of debris and replenishment of new media.

[0051] Compared with the existing technology, this solution achieves continuous adjustment of the friction coefficient through electromagnetic control of the abrasive state, and can accurately reproduce the friction characteristics of different materials such as iron pots and stainless steel pots (that is, by adjusting the electromagnetic field intensity to change the magnetorheological abrasive state and adjust its friction coefficient, it can simulate the friction of pots made of different materials), meet the parameter requirements of different test standards, and solve the debris accumulation problem in traditional tests through the friction disk 311 and the spirally distributed grooves 3111, effectively eliminating debris interference, ensuring a stable test environment, and improving the data accuracy of the test results.

[0052] Specifically, based on the above embodiment, it is further proposed that Figure 1 and Figure 2 As shown in the figure, a lifting drive device is provided on the top of the friction disk 311, and the lifting drive device includes a vertically arranged lifting push rod 41. The lifting end of the lifting push rod 41 is installed with a motor 42 through a connecting flange, and the output end of the motor 42 is connected to the top of the friction disk 311.

[0053] In this embodiment, the lifting push rod 41 drives the friction disc 311 to move vertically to a preset height, so that the friction disc 311 contacts the coating panel to be tested and applies a specific pressure, and the output end of the motor 42 is directly connected to the friction disc 311, so that the contact pressure and rotation speed of the friction disc 311 can be adjusted respectively by independently controlling the displacement of the lifting push rod 41 and the rotation speed of the motor 42; for example, in a specific implementation, when it is necessary to simulate the friction working condition of a lightweight cookware, the lifting push rod 41 adjusts the downward pressure of the friction disc 311 to a smaller value; when it is necessary to simulate a heavy pressure friction scene, the downward pressure is increased to increase the contact pressure, thereby realizing the wear resistance test of the coating under different pressure conditions; at the same time, it can be understood that since the vertical movement path of the friction disc 311 is constrained by the axial rigid guide of the lifting push rod 41, this can further avoid lateral deviation and uneven pressure distribution, thereby ensuring that the test data is more reliable.

[0054] Based on the above embodiment, further, Figure 3 and Figure 4 As shown, the electromagnetic coil 313 is installed at the bottom of the connecting disk 312 located inside the friction disk 311, and the outside of the connecting disk 312 rotates with the inside of the friction disk 311 through the embedded balls 314.

[0055] Specifically, after the electromagnetic coil 313 is fixed to the bottom of the connecting disk 312, a rotating pair is formed between the connecting disk 312 and the friction disk 311 through the ball 314. When the friction disk 311 is driven to rotate by an external drive, the ball 314 allows the connecting disk 312 to rotate relative to the friction disk 311 at a speed lower than that of the friction disk 311, so that after the connecting disk 312 rotates, the magnetorheological abrasive is driven to rotate accordingly. Therefore, for the magnetorheological abrasive, it is not only affected by the centrifugal force and shear force generated by the rotation of the friction disk 311, but also by the dynamic change effect of the magnetic field caused by the rotation of the connecting disk 312. This causes the magnetorheological abrasive to form a complex and varied friction distribution on the coating surface. On the one hand, the centrifugal force generated by the high-speed rotation of the friction disk 311 causes the magnetorheological abrasive to adhere closely to the coating surface, enhancing the friction effect. On the other hand, the magnetic field changes caused by the low-speed rotation of the connecting disk 312 cause the magnetorheological abrasive particles to produce tiny rubbing and plowing movements on the coating surface, simulating wear conditions that are closer to actual usage scenarios (such as pot shaking and particle impurities rolling). Compared with the traditional single friction disk 311 test, it can more realistically simulate the complex friction environment that the microcrystalline glass coating is subjected to during use in the induction cooker.

[0056] Based on the above embodiment, it should be added that Figure 5 As shown in FIG, the opening of the groove 3111 extends to the edge of the friction plate 311 , and the spiral direction of the groove 3111 is opposite to the rotation direction of the friction plate 311 .

[0057] Specifically, when the friction disk 311 rotates, the magnetorheological abrasive moves toward the periphery along the spiral groove driven by centrifugal force. Since the spiral direction is opposite to the rotation direction, the abrasive particles produce relative motion in the groove opposite to the rotation direction of the disk body, resulting in an increase in the friction resistance between the particles and the groove wall, thereby prolonging the residence time of the abrasive in the friction area. At the same time, the reverse spiral structure forms an eddy current effect when the disk body rotates, accelerating the migration of wear debris along the groove to the edge, and discharging it to the external collection device through the opening, preventing the debris from secondary deposition in the test area. Through the synergistic effect of the two, the abrasive is continuously evenly distributed during the test process, and dynamic cleaning of the debris is achieved. In this way, this scheme uses a through-type groove and a reverse spiral layout to improve the uniformity of abrasive distribution while also enhancing the debris discharge efficiency, thereby improving the test use effect of this device.

[0058] Furthermore, in the above embodiment, please refer to Figure 6 An overflow groove 3221 is opened on the inner ring surface of the raised retaining ring 322 at the position corresponding to the coating panel to be tested. The cross section of the overflow groove 3221 is V-shaped. The bottom of the overflow groove 3221 is connected to the storage tank 326 through multiple return pipes 325. A screen is provided at the top opening of the return pipe 325.

[0059] The overflow trough 3221 provided based on the above embodiment can block and collect part of the magnetorheological abrasive splashed out from between the friction disk 311 and the loading platform 321 after the wear test, and the collected magnetorheological abrasive can be returned to the storage tank 326 for recycling by using the return pipe 325 at the bottom. During the recycling process, the screen can filter the reflux mixture, and the coating debris is trapped above the screen. The magnetorheological abrasive after screening and filtering can enter the storage tank 326 for recycling, thereby realizing the recycling of the abrasive and greatly improving the utilization rate of the abrasive.

[0060] Based on the above embodiment, Figure 1 and Figure 2 As shown in the figure, the present application further proposes that the test bench also includes a wear detection unit. The wear detection unit and the test execution mechanism are both connected to the switching mechanism located in the detection chamber 21. After the test of the test execution mechanism is completed, the switching mechanism switches to the wear detection unit to detect the surface of the coating panel to be tested.

[0061] Specifically, after the test actuator completes the wear resistance test, the switching turntable 7 rotates under the driving action, so that the wear detection unit moves to the top of the coating panel to be tested, so as to perform a multi-directional scan of the coating surface and collect image data of the wear area. The data processing module compares the collected data with the initial coating parameters to generate quantitative analysis results of the wear depth, area and remaining thickness of the coating, and displays them in real time through the terminal. That is, compared with the existing technology, the traditional testing device needs to transfer the sample from the friction test station to the independent testing equipment. During the transfer process, the coating surface may be subject to secondary contamination or mechanical contact interference, resulting in distortion of the test data. In addition, the step-by-step operation extends the test cycle and cannot realize dynamic monitoring of the wear process. The present solution integrates the switching mechanism and the detection unit to switch to the detection state immediately after the test, ensuring the immediacy and integrity of data collection and eliminating the error risk caused by sample transfer.

[0062] Through the above technical solution, this application achieves a seamless connection between coating wear resistance testing and wear detection, improving test efficiency while ensuring the continuity and accuracy of wear data. The coating surface condition is immediately detected in situ after the test, preventing external factors from interfering with the test results and providing reliable dynamic data support for coating performance evaluation.

[0063] Based on the above embodiment, it should be supplemented that, specifically Figure 1 and Figure 2 As shown, the switching mechanism includes a switching turntable 7 that is vertically rotated inside the detection chamber 21. The lower portion of the outer surface of the switching turntable 7 is used to install the test execution mechanism, and the upper portion of the switching turntable 7 is used to install the wear detection unit.

[0064] In specific implementation, after the coating wear resistance test is completed, the switching turntable 7 can be driven by the motor 42 to rotate in the vertical plane. At this time, the test actuator originally located at the bottom rotates with the turntable to the upper non-working position, and the upper wear detection unit rotates synchronously to the lower test station, so as to achieve seamless connection between the test and detection processes through the rotation action of the mechanical turntable.

[0065] That is to say, through the above technical solution, the present application realizes the automated connection between the wear resistance test and the wear detection process. The test actuator and the detection unit complete the workstation switching through the same turntable, effectively reducing the interruption time of the test process and improving the overall efficiency of the coating performance test. The detection unit can directly collect data after the turntable rotates into place, avoiding the positioning deviation problem caused by manual operation in the traditional solution and ensuring the consistency of the test results.

[0066] Based on the above embodiment, further, the wear detection unit includes an infrared visual detection module and a data processing module, wherein the infrared visual detection module is connected to the switching turntable 7 through a rotating platform, and the infrared visual detection module is driven by the rotating platform to collect visual data on the surface wear condition and coating thickness of the tested coating panel after the test. The data processing module is electrically connected to the infrared visual detection module, receives visual data and calculates and processes to generate detection results and outputs them to the external terminal.

[0067] For example, an infrared visual inspection module refers to a detection device composed of an infrared light source and an image sensor. Specifically, it can be implemented by combining a near-infrared spectrometer with a high-resolution CCD camera, and data is collected by using the reflection differences of the infrared spectrum of coatings with different degrees of wear. The rotating platform refers to a mechanical structure that can rotate around a vertical axis. Specifically, it can be implemented by a slewing support bearing driven by a servo motor. By controlling the rotation angle, the inspection module moves along a circular trajectory to cover the area to be tested. The data processing module refers to a computing unit that integrates image processing algorithms. Specifically, it can be implemented by an embedded system equipped with an edge computing chip. The two-dimensional image data is converted into thickness distribution information through a three-dimensional morphology reconstruction algorithm. After completing the coating wear resistance test, the rotating platform drives the infrared visual inspection module to rotate 360 ​​degrees around the coated panel to be tested. The infrared light source illuminates the coating surface at a specific wavelength. The reflected light signal is captured by the CCD camera and generates a multi-angle image sequence. The data processing module performs feature matching and point cloud stitching on the image sequence to generate three-dimensional surface morphology data. By comparing with the original coating thickness baseline value, the depth and area ratio of the worn area are calculated. The test results are output to the terminal device in a numerical form, including wear level assessment and thickness change curve.

[0068] In other words, this solution realizes an integrated test-detection process by integrating a rotating detection structure with automatic data processing functions, eliminates positioning errors caused by sample transfer, and avoids interference of oil residues on data in visible light detection through infrared spectral feature extraction, thereby realizing automated quantitative detection of wear morphology and thickness changes of coating panels, and further solving the problems of low efficiency of manual observation and large deviations in subjective judgment.

[0069] Based on the above embodiment, further preferred implementation methods are as follows: Figure 7 、 Figure 8 and Figure 9 As shown, a heating chamber 51 is provided inside the loading platform 321 at a position corresponding to the coating panel to be tested, and a heater 517 is provided inside the heating chamber 51 via a displacement adjustment platform;

[0070] The displacement adjustment platform includes a displacement slide 513 and a first screw rod 511 located at the bottom of the displacement slide 513 and extending to the outside of the loading platform 321. The first screw rod 511 is rotatably connected to the interior of the heating chamber 51. A first nut sliding seat 512 connected to the displacement slide 513 is sleeved on the outside of the first screw rod 511. A rack 519 is also installed at the bottom of the heating chamber 51, parallel to the first screw rod 511.

[0071] A through slot 514 perpendicular to the length direction of the first screw rod 511 is provided inside the displacement slide 513, and a second screw rod 515 is rotatably provided inside the through slot 514. The end of the second screw rod 515 close to the rack 519 extends to the outside of the through slot 514 and is connected to a gear 518 meshing with the rack 519. The outer surface of the second screw rod 515 is sleeved with a second nut sliding seat 516 that slides with the through slot 514. The second nut sliding seat 516 extends to the outside of the through slot 514 and is connected to the heater 517.

[0072] It is understood that in the above embodiment, the heating chamber 51 refers to a closed space provided inside the loading platform 321. Specifically, the chamber structure can be made of a high-temperature resistant alloy material, and is used to carry the heater 517 and form a high-temperature test environment. Its function is to create a controlled thermal field for the coating to be tested and simulate the actual operating temperature of the induction cooker panel.

[0073] When it is necessary to conduct a coating wear resistance test under a high temperature environment, the position of the heater 517 can be adjusted through the displacement adjustment platform, that is, the first screw rod 511 is rotated, and after it rotates, it drives the first nut sliding seat 512 to move in the horizontal direction of the loading platform 321, thereby driving the displacement slide 513 to translate as a whole. At this time, as the displacement slide 513 moves longitudinally, the second screw rod 515 in the through groove 514 thereof can rotate synchronously through the meshing action of the gear 518 and the rack 519, thereby causing the second screw rod 515 to rotate in the through groove 514, thereby driving the second nut sliding seat 512 to move in the horizontal direction of the loading platform 321, thereby driving the displacement slide 513 to translate as a whole. The movable seat 516 moves along the length of the through slot 514 (that is, along the longitudinal direction of the loading platform 321), thereby causing the heater 517 to form a composite motion trajectory in both the horizontal and vertical directions. This linkage mechanism enables the heater 517 to cover any area on the surface of the panel to be tested, enabling the heat source to be randomly and dynamically distributed during the wear resistance test. Furthermore, during the test, the heat energy generated by the heater 517 is conducted to the coated panel to be tested through the loading platform 321, and combined with the mechanical wear exerted by the friction disk 311, a composite operating condition of high temperature and friction coupling is formed.

[0074] Compared with the existing technology, traditional testing devices usually use fixed heating elements, which cannot dynamically adjust the thermal field distribution, resulting in a significant temperature gradient in the test area, making it difficult to truly simulate the actual working conditions of uneven heating of the induction cooker panel; therefore, this technology constructs a two-dimensional adjustable heat source system through the combination of the first screw 511 transmission system and the gear 518 linkage structure, which can actively adjust the position of the heater 517 during the test and eliminate the temperature distribution distortion caused by the fixed heat source; at the same time, the dual-axis linkage mechanism only requires a single drive source to achieve planar motion, which significantly reduces the system complexity compared to the traditional multi-motor 42 drive solution.

[0075] Through the above technical solution, the present application can accurately control the temperature field distribution in the test area, thereby realizing dynamic simulation of the instantaneous temperature changes at different positions of the induction cooker panel during the movement of the cooker. At the same time, based on the specific structure of the upper displacement adjustment platform, the motion trajectory of the heater 517 can be dynamically adjusted to match the rotation of the friction disk 311, thereby effectively reproducing the performance degradation process of the coating under high-temperature friction composite working conditions, thereby accurately evaluating the change law of the wear resistance of the coating material under thermal stress, and providing reliable data support for optimizing the coating process.

[0076] Based on the above embodiment, it should be noted that Figure 1As shown in the figure, a power supply unit 6 is also provided at the bottom of the base 1, and is used to power the test bench in the test box 2. In this embodiment, the power supply unit 6 refers to a modular power supply system integrated at the bottom of the base 1 and providing power to the test bench in the test box 2. Specifically, a power supply module with multiple independent outputs can be used to power the device to ensure the normal operation of the test device. In other words, the power supply unit 6 can accurately match the power requirements of different modules such as the friction disk 311 drive, the electromagnetic coil 313, the heater 517, and the wear detection unit, ensuring the power supply stability when the various systems work together during the test, thereby improving the accuracy and repeatability of the coating wear resistance test data.

[0077] The above specific implementation methods further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above are only specific implementation methods of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0078] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings in this specification are schematic diagrams, which serve only to cooperate with the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which the present invention can be implemented. Therefore, they have no substantive technical significance. Any modification of the structure, change in the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed in the present invention without affecting the efficacy and purpose that can be achieved by the present invention.

[0079] At the same time, the terms such as "upper", "lower", "left", "right", "middle", etc. quoted in this specification are only for the convenience of description and are not used to limit the scope of implementation of the present invention. Changes or adjustments to their relative relationships should also be regarded as the scope of implementation of the present invention without substantially changing the technical content.

Claims

1. A device for testing functional coatings of microcrystalline glass for an induction cooker, comprising a base (1), a detection box (2) located on the base (1), a detection cavity (21) provided inside the detection box (2), and characterized in that: A test bench is provided inside the detection chamber (21), and the test bench comprises a test execution mechanism and a test placement seat; The test execution mechanism includes a friction disk (311), an electromagnetic coil (313) is provided inside the friction disk (311), a spirally distributed groove (3111) is provided at the bottom of the friction disk (311), the opening of the groove (3111) extends to the edge of the friction disk (311), and the spiral direction of the groove (3111) is opposite to the rotation direction of the friction disk (311); the test placement seat includes a loading platform (321) with a coating panel to be tested clamped at a position corresponding to the friction disk (311) at the top middle, a raised retaining ring (322) is provided around the top of the loading platform (321), a nozzle (323) corresponding to the coating panel to be tested is provided on the upper part of the raised retaining ring (322), the nozzle (323) is connected to a storage tank (326) provided at the bottom of the loading platform (321) through a pressurized pipe (324), and magnetorheological abrasive is stored in the storage tank (326); When performing a coating wear test, the friction disc (311) moves downwardly toward the loading platform (321) and rotates, the nozzle (323) sprays magnetorheological abrasive toward the surface of the loading platform (321), and after the friction disc (311) approaches the loading platform (321), it is shielded by the raised retaining ring (322) to form an annular gap for accommodating the magnetorheological abrasive, and the electromagnetic coil (313) is energized to generate an electromagnetic adsorption force, so as to drive the magnetorheological abrasive to perform a wear test on the coating panel to be tested through the rotation of the friction disc (311); The electromagnetic coil (313) is mounted on the bottom of the connecting disk (312) located inside the friction disk (311), and the outside of the connecting disk (312) is rotatably matched with the inside of the friction disk (311) through the embedded ball (314); a rotating pair is formed between the connecting disk (312) and the friction disk (311) through the ball (314); when the friction disk (311) is driven to rotate by an external drive, the ball (314) allows the connecting disk (312) to rotate at a speed lower than that of the friction disk (311), so that the connecting disk (312) rotates and drives the magnetorheological abrasive to rotate accordingly, so that it is not only affected by the centrifugal force and shear force generated by the rotation of the friction disk (311), but also by the dynamic change effect of the magnetic field caused by the rotation of the connecting disk (312); A heating chamber (51) is provided inside the loading platform (321) at a position corresponding to the coating panel to be tested. A heater (517) is provided inside the heating chamber (51) via a displacement adjustment platform to construct a controlled thermal field for the coating to be tested, simulate the actual operating temperature of the induction cooker panel, and dynamically simulate the instantaneous temperature changes at different positions of the induction cooker panel during the movement of the cooker.

2. The induction cooker glass-ceramic functional coating testing device according to claim 1, characterized in that: The top of the friction disc (311) is also provided with a liftable drive device, the liftable drive device comprising a vertically arranged lift push rod (41), a lift end of the lift push rod (41) being mounted with a motor (42) via a connecting flange, and an output end of the motor (42) being connected to the top of the friction disc (311).

3. The induction cooker glass-ceramic functional coating testing device according to claim 1, characterized in that: An overflow groove (3221) is further provided on the inner surface of the raised retaining ring (322) at a position corresponding to the coating panel to be tested. The cross section of the overflow groove (3221) is V-shaped, and the bottom of the overflow groove (3221) is connected to the storage tank (326) through a plurality of return pipes (325). A screen is provided at the top opening of the return pipe (325).

4. The induction cooker glass-ceramic functional coating testing device according to claim 2, characterized in that: The test bench also includes a wear detection unit. The wear detection unit and the test execution mechanism are both connected to a switching mechanism located in the detection chamber (21). After the test execution mechanism completes the test, the switch mechanism switches to the wear detection unit to detect the surface of the coating panel to be tested.

5. The induction cooker glass-ceramic functional coating testing device according to claim 4, characterized in that: The switching mechanism comprises a switching turntable (7) that is vertically rotatable and arranged inside the detection chamber (21); the lower portion of the outer surface of the switching turntable (7) is used for mounting a test execution mechanism, and the upper portion of the switching turntable (7) is used for mounting the wear detection unit.

6. The induction cooker glass-ceramic functional coating testing device according to claim 4, characterized in that: The wear detection unit comprises an infrared visual detection module and a data processing module. The infrared visual detection module is connected to the switching turntable (7) via a rotating platform. The rotating platform is used to drive the infrared visual detection module to collect visual data on the wear condition of the surface of the coating panel to be tested and the coating thickness after the test. The data processing module is electrically connected to the infrared visual detection module and is used to receive visual data and calculate and process the generated detection results to output to an external terminal.

7. The induction cooker glass-ceramic functional coating testing device according to claim 1, characterized in that: The displacement adjustment platform includes a displacement slide (513) and a first screw rod (511) located at the bottom of the displacement slide (513) and with its end extending to the outside of the loading platform (321); the first screw rod (511) is rotatably connected to the inside of the heating chamber (51), and the outside of the first screw rod (511) is provided with a first nut sliding seat (512) connected to the displacement slide (513); a rack (519) is also installed at the bottom of the heating chamber (51) at a position parallel to the first screw rod (511); A through slot (514) perpendicular to the length direction of the first screw rod (511) is provided inside the displacement slide (513); a second screw rod (515) is rotatably provided inside the through slot (514); one end of the second screw rod (515) close to the rack (519) extends to the outside of the through slot (514) and is connected to a gear (518) meshing with the rack (519); a second nut sliding seat (516) that is slidably engaged with the through slot (514) is sleeved on the outer surface of the second screw rod (515); the second nut sliding seat (516) extends to the outside of the through slot (514) and is connected to the heater (517).

8. The induction cooker glass-ceramic functional coating testing device according to claim 1, characterized in that: A power supply unit (6) is also provided at the bottom of the base (1), and the power supply unit (6) is used to supply power to the test bench in the detection box (2).

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