Carbon film wear-resistant process testing device

Abstract

The utility model discloses a carbon film wear-resistant process testing device. The device is implemented mainly through two main mechanisms, namely a testing mechanism and a detecting mechanism. Firstly, the detection mechanism firmly fixes a detected carbon film plate in a length, width or / and height adjustable manner through a stepped clamping assembly. The design ensures that the carbon film plates with different sizes and specifications can be effectively fixed and tested; according to the technology of the utility model, by adopting the design of the parallel modules, the universal joint couplings and the like, multidirectional repeated motion friction of the testing mechanism in a three-dimensional space is realized. By means of the design, the technology can adapt to the tested carbon film plates with different shapes, sizes and friction requirements, and the testing flexibility and adaptability are greatly improved. By integrating a plurality of functional modules, an efficient and automatic carbon film wear-resistant process testing process is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of carbon film testing, in particular to a carbon film wear-resistant process testing device. Background Art

[0002] Carbon film PCB is a printed circuit board with a permanent conductive coating. This type of board has been widely used in the market, especially in low-power electronic products such as televisions, telephones, electronic keyboards, etc. Carbon film PCB uses a simple screen printing process to add one or two layers of conductive graphics on a single-sided printed circuit board. These conductive graphics can not only be used as interconnects, but also as resistors, key switch contacts and electromagnetic shielding layers. This manufacturing method makes carbon film PCBs suitable for multi-layer wiring, easy to achieve light and thin design, and can simplify the production process and reduce costs, making it very suitable for mass production.

[0003] The resistance change of carbon film resistors is closely related to its thickness and other physical properties. If the carbon film is worn in some areas and the film becomes thinner, its resistance will decrease. In daily use, the wear of the carbon film on the PCB surface is inevitable, such as mechanical friction, chemical corrosion or electrical stress. As the wear increases, the resistance of the carbon film may change, even exceeding the set threshold, causing the entire PCB board to lose its effectiveness.

[0004] In order to evaluate the service life of the carbon film in the production batch under normal working conditions, the wear resistance of a carbon film can be tested individually. This test is usually completed using a special test device, such as a carbon film wear tester disclosed in Chinese utility model patent CN202220939400.9, which accelerates the wear process of the carbon film by simulating the friction conditions in actual use through the single linear reciprocating friction of the friction part.

[0005] However, this traditional test device has some technical defects. The single linear reciprocating friction may not fully simulate the multi-directional and complex path friction that the carbon film may encounter in actual applications. This simplified friction mode may cause a deviation between the test results and the actual performance, thereby reducing the accuracy of the test. Moreover, the pressure to which the carbon film is subjected may change due to changes in the working environment or conditions of use. A test device that cannot adjust the pressure cannot simulate this change, and therefore may not accurately reflect the wear resistance of the carbon film under different pressures. This limits the reliability and scope of application of the test results.

[0006] Therefore, the accuracy and reliability of the test are limited by the friction of the friction parts only through the single linear reciprocating motion and the inability to adjust the pressure. Due to the above two defects, the test results may only reflect the wear resistance of the carbon film under specific and limited conditions, and cannot fully and accurately evaluate its performance under various actual working conditions. This may lead to problems in actual applications that cannot be predicted and prevented in time through test results.

[0007] To this end, the utility model proposes a carbon film wear-resistant process testing device. Utility Model Content

[0008] In view of this, the embodiment of the utility model hopes to provide a carbon film wear resistance process testing device to solve or alleviate the technical problems existing in the prior art, that is, how to achieve the adjustable pressure variable under the premise of multi-directional return motion friction of the carbon film plate being tested, and at least provide a beneficial option for this;

[0009] The technical solution of the embodiment of the utility model is implemented as follows: a carbon film wear-resistant process testing device, which is implemented mainly through two main mechanisms: a testing mechanism 2 and a detection mechanism 4. First, the detection mechanism 4 firmly fixes the carbon film plate to be tested in a manner that is adjustable in length, width or / and height through a stepped clamping component. This design ensures that carbon film plates of different sizes and specifications can be effectively fixed and tested. At the same time, the detection mechanism 4 is also equipped with a test component for real-time detection of the resistance change of the carbon film plate to be tested, thereby accurately capturing the performance change of the carbon film during the friction process.

[0010] Test mechanism 2 is the core part of the device, which includes a parallel module and a friction assembly. The design of the parallel module allows the friction assembly to be adjusted at a universal angle, which means that the friction assembly can perform friction tests on the carbon film plate under test in multiple directions, thereby more comprehensively evaluating the wear resistance of the carbon film. The friction assembly itself has the characteristic of adjustable roughness, which enables testers to adjust the roughness of the friction surface according to experimental requirements to simulate the friction conditions in different actual use scenarios.

[0011] When performing the test, firstly, according to the model and size of the carbon film plate to be tested, the detection mechanism 4 is used to clamp it, and the test assembly is connected to the carbon film plate to be tested. Then, the surface roughness of the friction assembly is adjusted according to the experimental requirements, and it is rubbed back and forth on the surface of the carbon film plate to be tested. During this period, the parallel module can adjust the universal angle of the friction assembly as needed to change the direction of friction. At the same time, the test assembly continuously monitors the resistance change of the carbon film plate, and records and analyzes the data in real time.

[0012] In one embodiment, it also includes a linear module 3, which is used to drive the test mechanism 2 to approach or move away from the carbon film plate to be tested. The linear module 3 is integrated into the test device, and its main function is to drive the test mechanism 2 to approach or move away from the carbon film plate to be tested. This design enables the test mechanism 2 to be accurately positioned to a specific position of the carbon film plate to be tested as needed, so as to perform a more accurate friction test. At the same time, the linear module 3 and the detection mechanism 4 are arranged separately, and the station is loaded when used, which means that the test device can flexibly adjust the station configuration according to actual needs to adapt to larger sizes or more sizes of carbon film plates to be tested.

[0013] In the specific implementation, the tester first selects the appropriate station loading method according to the size and model of the carbon film plate to be tested, and arranges the linear module 3 and the detection mechanism 4 in the appropriate position. Then, the linear module 3 drives the test mechanism 2 to move above the carbon film plate to be tested, adjusts the position and angle of the friction component, and starts the friction test. This flexible station loading method not only improves the application range of the test device, but also makes the test process more efficient and convenient.

[0014] In one embodiment, the linear module 3 is mainly composed of a servo motor 301, a ball screw 302 and a moving platform 303. The servo motor 301, as a power source, drives the ball screw 302 to rotate through its precise control capability. The ball screw 302 is an efficient transmission element that can convert the rotational motion of the servo motor 301 into the linear motion of the moving nut (not clearly marked in the legend, but a standard component of the ball screw). The moving nut is connected to the moving platform 303, so when the ball screw 302 is working, the moving platform 303 will move precisely in a straight line along the track of the linear module 3.

[0015] The test mechanism 2 is mounted on the moving platform 303, so as the moving platform 303 moves, the test mechanism 2 can also move closer to or farther away from the carbon film plate under test under the drive of the linear module 3. This design not only ensures that the test mechanism 2 can be stably and accurately moved to the specified position, but also improves the automation and accuracy of the entire test process.

[0016] In one embodiment, the friction assembly is mainly composed of a housing 202, a plurality of friction blocks 203 detachably slidably fitted in the housing 202, and a cylinder 201 installed outside the housing 202. Each friction block 203 has a friction surface with different roughness uniformly formed on one side facing the carbon film plate to be tested, so that a single friction block can provide multiple roughness options.

[0017] The piston rod of the cylinder 201 is connected to the friction block 203, and the friction block 203 can be pushed to slide in the housing 202 through the telescopic movement of the cylinder 201. This design not only allows the friction block 203 to be easily adjusted to a position in contact with the carbon film plate to be tested, but also enables the friction block 203 to perform a reciprocating friction movement under a specific roughness.

[0018] When performing the test, the cylinder 201 first adjusts the friction surface of the selected friction block 203 to the position of the carbon film plate to be tested. Then, the cylinder 201 pushes cyclically so that the current friction surface of the friction block 203 performs back-and-forth friction on the surface of the carbon film plate to be tested. In this way, the friction environment under different roughness conditions can be simulated, so as to more comprehensively evaluate the wear resistance of the carbon film plate to be tested.

[0019] In addition, this embodiment also provides another solution, that is, the friction surface roughness of the friction block 203 is integrated. In this solution, each friction block 203 has only one roughness, but can be detachably replaced according to experimental requirements. Although this design sacrifices some flexibility, it simplifies the structure of the friction block 203 and reduces the manufacturing cost, while still meeting the requirements of multiple roughness tests.

[0020] In one embodiment, a reading count sensor 206 is installed inside the housing 202, and the sensor is configured to accurately detect and record the number of feeding and reciprocating movements of the friction block 203. Whenever the friction block 203 performs a complete feeding and reciprocating movement under the push of the cylinder 201, the reading count sensor 206 will increase the count accordingly. The reading count sensor 206 can be connected to the control system of the test device to transmit the data of the number of feeding and reciprocating movements of the friction block 203 in real time. In this way, the tester can evaluate the performance changes of the tested carbon film plate under different friction times based on these data, so as to more accurately understand the wear resistance characteristics of the carbon film plate.

[0021] In one embodiment, the parallel module of the test mechanism 2 is composed of at least three servo electric cylinders 204, and the cylinder bodies and piston rods of these servo electric cylinders 204 are respectively universally hinged to the moving platform 303 of the linear module 3 and the housing 202 through universal joint couplings 205. This configuration allows the servo electric cylinders 204 to apply force in multiple directions, thereby achieving complex movements of the housing 202.

[0022] When each servo cylinder 204 performs output, they work together to transform the originally open kinematic chain (from the moving platform 303 to the housing 202) into a closed kinematic chain. Due to the presence of the upper and lower sets of universal joint couplings 205, the mechanism maintains the necessary degrees of freedom, so that the linear degrees of freedom can be converted into the rotational degrees of freedom on the housing 202.

[0023] By starting each servo electric cylinder 204 to perform output at a predetermined stroke, the housing 202 and the friction block 203 thereon can be precisely controlled to perform universal angle adjustment along a specific spatial trajectory. This adjustment capability enables the test device to simulate a wider range of friction conditions and scenarios, thereby more comprehensively evaluating the wear resistance of the carbon film plate being tested.

[0024] In one embodiment, the friction block 203 is designed as a prism, that is, it has multiple planes as potential contact surfaces. During the universal angle adjustment process, these planes can contact the carbon film plate under test at different angles and areas. Since the contact area is variable, the pressure applied to the carbon film plate under test can be controlled by adjusting the size of the contact surface.

[0025] In one embodiment, the detection mechanism 4 includes a first slide plate 401 and a second slide plate 403, both of which are provided with a plurality of slides in an array. The test mechanism 2 and the linear module 3 are placed in the middle of the first slide plate 401, and the first slide plate 401 is symmetrically provided with pneumatic clamps 402 on both sides thereof with the test mechanism 2 as a reference. These pneumatic clamps 402 are used to clamp the carbon film plate to be tested, and they are detachably slidably fitted on the slides of the first slide plate 401.

[0026] According to the size of the carbon film plate to be tested, the pneumatic clamp jaw 402 can find the corresponding size of the slide groove and install it, and then slide to fit the length and width of the carbon film plate to be tested. The thickness of the carbon film plate to be tested is adapted by the pneumatic clamp jaw 402 itself during the clamping process. In order to protect the carbon film plate to be tested from being damaged by clamping, the jaws of the pneumatic clamp jaw 402 are preferably equipped with a soft pad.

[0027] The second slide plate 403 is fixedly arranged on the first slide plate 401. When the carbon film plate to be tested is clamped by the pneumatic clamp 402, the second slide plate 403 is located at the lower part of the carbon film plate to be tested. The test assembly is installed on the second slide plate 403. Due to the position characteristics of the second slide plate 403, when the friction assembly rubs on the upper part of the carbon film plate to be tested, the test assembly can perform resistance detection at the lower position corresponding to the carbon film plate to be tested.

[0028] In one embodiment, the test assembly mainly includes a multimeter 404 and two conductor patches 405. The multimeter 404 is fixedly arranged on one side of the second slide plate 403 for displaying and recording the resistance value. The two conductor patches 405 are detachably slidably fitted on the second slide plate 403, and they can form good contact with the lower surface of the carbon film plate to be tested. The two test leads of the multimeter 404 are electrically connected to the two conductor patches 405, thereby forming a complete measurement circuit.

[0029] In one embodiment, the testing mechanism 2 , the linear module 3 and the detection mechanism 4 are all installed on the workbench 1 .

[0030] Compared with the prior art, the beneficial effects of the utility model are:

[0031] 1. Flexibility and adaptability: The technology of the utility model realizes multi-directional repetitive motion friction of the test mechanism in three-dimensional space by adopting designs such as parallel modules and universal joint couplings. This design enables the technology to adapt to the tested carbon film plates of different shapes, sizes and friction requirements, greatly improving the flexibility and adaptability of the test. By integrating multiple functional modules, an efficient and automated carbon film wear-resistant process testing process is realized. From the automatic clamping of the pneumatic jaws, the execution of multi-directional repetitive motion friction, to the real-time measurement and recording of resistance values, the entire test process can be completed efficiently with less manual intervention, thereby improving test efficiency and reducing operating costs.

[0032] Second, precise adjustment of pressure variables: By designing the friction block as a prism, the technology of the utility model realizes precise adjustment of pressure variables. Testers can adjust the contact area between the friction block and the tested carbon film plate according to experimental requirements, thereby accurately controlling the applied pressure, which provides the possibility for a more comprehensive evaluation of the wear resistance of the carbon film plate.

[0033] 3. Measurement and recording capability: By introducing test components such as a multimeter and a conductor patch, the technology of the utility model realizes real-time and accurate measurement and recording of the resistance value change of the tested carbon film plate during the friction process. This capability provides reliable data support for analyzing the wear resistance of the carbon film plate, and helps to improve the accuracy and credibility of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 It is a three-dimensional schematic diagram from one perspective of the utility model;

[0036] Figure 2 It is a three-dimensional schematic diagram from another perspective of the utility model;

[0037] Figure 3 It is a three-dimensional schematic diagram of the linear module of the utility model;

[0038] Figure 4 It is a three-dimensional schematic diagram of the testing mechanism of the utility model;

[0039] Figure 5 It is a three-dimensional schematic diagram of the linear module and the detection mechanism of the utility model.

[0040] Figure numerals: 1. workbench; 2. testing mechanism; 201. cylinder; 202. housing; 203. friction block; 204. servo electric cylinder; 205. universal joint coupling; 206. counting sensor; 3. linear module; 301. servo motor; 302. ball screw; 303. moving table; 4. testing mechanism; 401. first slide plate; 402. pneumatic clamp; 403. second slide plate; 404. multimeter; 405. conductor patch. DETAILED DESCRIPTION

[0041] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model. Therefore, the utility model is not limited to the specific embodiments disclosed below;

[0042] Example:

[0043] In the prior art, single linear reciprocating friction may not be able to fully simulate the multi-directional and complex path friction that the carbon film may encounter in actual applications. This simplified friction mode may cause a deviation between the test results and the actual performance, thereby reducing the accuracy of the test. And in actual applications, the pressure to which the carbon film is subjected may change due to changes in the working environment or use conditions. A test device that cannot adjust the pressure cannot simulate this change, and therefore may not accurately reflect the wear resistance of the carbon film under different pressures. This limits the reliability and scope of application of the test results.

[0044] Due to the above two defects, the test results may only reflect the wear resistance of the carbon film under specific and limited conditions, but cannot fully and accurately evaluate its performance under various actual working conditions. This may lead to the inability to predict and prevent problems in actual applications through test results in a timely manner.

[0045] To do this, see Figure 1-5 , this specific embodiment will provide relevant technical solutions to solve the above technical problems: a carbon film wear-resistant process testing device, including a testing mechanism 2 and a detection mechanism 4, the detection mechanism 4 clamps the carbon film plate to be tested in a fixed length, width or / and height adjustable form through a stepped clamping component, and tests the resistance value of the carbon film plate to be tested in real time through the testing component;

[0046] The test mechanism 2 includes a parallel module and a friction component. The test mechanism 2 drives the surface of the carbon film plate to be tested to perform a friction test in a feeding back and forth manner through the friction component. The roughness of the friction component is adjustable.

[0047] The parallel module is used to adjust the friction component to perform universal angle adjustment relative to the surface of the carbon film plate being tested.

[0048] All electrical components of the device as a whole rely on AC power for energy supply; specifically, the electrical components of the device as a whole are conventionally electrically connected to the AC power output port through devices such as relays, transformers and button panels to meet the energy supply requirements of all electrical components of the device.

[0049] A controller is also provided on the outside of the device, which is used to connect and control all electrical components of the device as a whole to be driven according to a pre-set program as a preset value and a driving mode; it should be pointed out that the above-mentioned driving mode corresponds to the corresponding start and stop time intervals, speed, power and other output parameters between the relevant electrical components mentioned below, that is, it meets the requirements of the relevant electrical components described below to drive the relevant mechanical devices to operate according to the functions described therein.

[0050] During execution, firstly, the carbon film plate to be tested is clamped by the detection mechanism 4 according to its model and size, and the test assembly is connected to the carbon film plate to be tested; then, the friction assembly of the test mechanism 2 adjusts the surface roughness according to the experimental requirements and then rubs back and forth on the surface of the carbon film plate to be tested; during this period, according to the experimental requirements, the parallel module can perform universal angle adjustment on the friction assembly, that is, adjust the direction of friction; while the above-mentioned test mechanism 2 is in operation, the test assembly detects the change in resistance value according to the change in thickness of the carbon film plate.

[0051] Preferably, the controller is a PLC controller, which completes the above control requirements through conventional PLC control modes such as ladder diagrams, sequential function diagrams, function block diagrams, instruction tables or structured texts; it should be pointed out that the output parameters such as the start and stop time intervals, speed, power, etc. of the electrical components or other power components driven by its programming are non-limiting; specifically, the relevant drive control is adjusted according to actual usage requirements.

[0052] Specifically: The design principle of the device is based on simulating the friction and wear process of the carbon film under actual use conditions, and evaluating the wear resistance of the carbon film by real-time monitoring of the resistance change. Through the synergy of the parallel module and the friction component, the device can simulate multi-angle and multi-directional friction conditions, as well as friction environments under different roughness, so as to more realistically reflect the wear resistance of the carbon film in actual use. At the same time, the real-time resistance detection function of the detection mechanism 4 ensures the accuracy and timeliness of the test data, providing a reliable experimental basis for R&D personnel.

[0053] It can be understood that in the above technical solution: first, the device has a wide range of applicability and can adapt to the testing needs of carbon film plates of different sizes and specifications; second, through the flexible adjustment of parallel modules and friction components, the device can simulate complex and changeable friction conditions to comprehensively evaluate the wear resistance of the carbon film; third, the real-time resistance detection function enables the device to accurately capture the performance changes of the carbon film during the friction process, providing valuable experimental data for R&D personnel.

[0054] In the technical solution provided in this embodiment, please refer to Figures 1 to 3 : It also includes a linear module 3, which is used to drive the test mechanism 2 to approach or move away from the carbon film plate to be tested. The linear module 3 is integrated into the test device, and its main function is to drive the test mechanism 2 to approach or move away from the carbon film plate to be tested. This design enables the test mechanism 2 to be accurately positioned to a specific position of the carbon film plate to be tested as needed, so as to perform a more accurate friction test. At the same time, the linear module 3 and the detection mechanism 4 are arranged separately, and the station is loaded when in use, which means that the test device can flexibly adjust the station configuration according to actual needs to adapt to larger sizes or more sizes of carbon film plates to be tested.

[0055] In the specific implementation, the tester first selects the appropriate station loading method according to the size and model of the carbon film plate to be tested, and arranges the linear module 3 and the detection mechanism 4 in the appropriate position. Then, the linear module 3 drives the test mechanism 2 to move above the carbon film plate to be tested, adjusts the position and angle of the friction component, and starts the friction test. This flexible station loading method not only improves the application range of the test device, but also makes the test process more efficient and convenient.

[0056] In the technical solution provided in this embodiment, please refer to Figure 3 Or 5: The linear module 3 includes a servo motor 301 and a ball screw 302 driven by the servo motor 301 , a moving platform 303 is installed on the moving nut of the ball screw 302 , and the testing mechanism 2 is mounted on the moving platform 303 .

[0057] Specifically: The principle of this embodiment is mainly based on the precise control capability of the servo motor 301 and the efficient transmission characteristics of the ball screw 302. The servo motor 301 can precisely control its rotation angle and speed by receiving the control signal, thereby realizing precise driving of the ball screw 302. The ball screw 302 utilizes its internal ball circulation structure to efficiently convert the rotational motion of the servo motor 301 into the linear motion of the moving nut, thereby driving the moving platform 303 and the testing mechanism 2 to perform precise linear motion.

[0058] It can be understood that in the above technical solution: firstly, through the coordinated action of the servo motor 301 and the ball screw 302, the test mechanism 2 is accurately moved in the linear direction, providing accurate positioning guarantee for the subsequent friction test; secondly, the design of the moving platform 303 enables the test mechanism 2 to be stably mounted on the linear module 3, ensuring the stability and reliability of the test process;

[0059] In the technical solution provided in this embodiment, please refer to Figure 4 The friction assembly of the testing mechanism 2 includes a housing 202 and a plurality of friction blocks 203 detachably slidably fitted in the housing 202. The friction blocks 203 are provided with friction surfaces of different roughness on one side facing the carbon film plate to be tested.

[0060] A cylinder 201 is installed outside the housing 202 , and a piston rod of the cylinder 201 is connected to and pushes the friction block 203 to slide and adjust along the inner wall of the housing 202 .

[0061] During execution, the cylinder 201 of the friction assembly has two functions: one is to adjust the friction surface of the friction block 203 to be located on the carbon film plate to be tested; the other is to cyclically push the current friction surface of the friction block 203 to feed back and forth and rub against the surface of the carbon film plate to be tested, thereby realizing the "adjustable roughness" mentioned above.

[0062] Specifically: The principle of this embodiment is mainly based on the precise control of the cylinder 201 and the multi-roughness design of the friction block 203. The cylinder 201 achieves precise control of the position and friction movement of the friction block 203 through precise telescopic movement. The multi-roughness design of the friction block 203 provides a variety of friction conditions to choose from, thereby simulating a friction environment that is closer to the actual use scenario.

[0063] Optionally, the friction surface roughness of the friction block 203 is designed to be integrated. In this solution, each friction block 203 has only one roughness, but can be detachably replaced according to experimental requirements. Although this design sacrifices some flexibility, it simplifies the structure of the friction block 203 and reduces the manufacturing cost, while still meeting the requirements of multiple roughness tests. It also enables the cylinder 201 to be driven at full stroke, improving the friction execution efficiency.

[0064] It can be understood that in the above technical solution: first, through the precise control of the cylinder 201, the automatic adjustment of the position and friction movement of the friction block 203 is realized, thereby improving the accuracy and efficiency of the test; secondly, the multi-roughness design of the friction block 203 enables the device to simulate a variety of friction conditions, providing strong support for the comprehensive evaluation of the wear resistance of the carbon film plate under test; finally, the detachable friction block 203 design also enables the device to adapt to more testing requirements, thereby improving the versatility and flexibility of the device.

[0065] In the technical solution provided in this embodiment, please refer to Figure 4 : A read count sensor 206 is installed inside the housing 202, and the sensor is configured to accurately detect and record the number of feed reciprocating times of the friction block 203. Whenever the friction block 203 performs a complete feed reciprocating motion under the push of the cylinder 201, the read count sensor 206 will increase the count accordingly. The read count sensor 206 can be connected to the control system of the test device to transmit the data of the number of feed reciprocating times of the friction block 203 in real time. In this way, the tester can evaluate the performance changes of the tested carbon film plate under different friction times based on these data, so as to more accurately understand the wear resistance characteristics of the carbon film plate.

[0066] Specifically: The working principle of the reading count sensor 206 is based on its accurate detection of the motion state of the friction block 203. Depending on the type, such as photoelectric sensing, magnetic sensing or mechanical contact, the count sensor 206 can accurately record a movement each time the friction block 203 passes its detection point. By continuously recording the number of times the friction block 203 is fed back and forth, the reading count sensor 206 provides an important data indicator for the tester to analyze the performance degradation of the carbon film plate during long-term friction.

[0067] It should be noted that the data of the counting sensor 206 is connected and read by the controller, and the controller needs to feed back to a display device (such as a display).

[0068] In the technical solution provided in this embodiment, please refer to Figure 4 The parallel module of the testing mechanism 2 includes at least three servo electric cylinders 204, and the cylinder body and piston rod of the servo electric cylinder 204 are universally hinged on the moving platform 303 of the linear module 3 and the housing 202 through the universal joint coupling 205 respectively.

[0069] In this solution, when each servo electric cylinder 204 performs output, the open motion chain from the movable table 303 to the housing 202 is changed into a closed motion chain, and the freedom of the mechanism is maintained due to the existence of the upper and lower sets of universal joint couplings 205, thereby converting the linear degree of freedom into rotational degree of freedom on the housing 202; therefore, when each servo electric cylinder 204 is started to perform output with a predetermined stroke amount, the housing 202 and its friction block 203 can be controlled to perform universal angle adjustment along a certain spatial trajectory.

[0070] Specifically: The principle of this embodiment is based on the kinematic characteristics of the parallel mechanism and the precise control capability of the servo electric cylinder 204. The parallel mechanism can achieve a more complex motion trajectory than a single drive through the synergistic effect of multiple servo electric cylinders 204. At the same time, the introduction of the universal joint coupling 205 increases the degree of freedom of the mechanism, allowing the housing 202 to rotate flexibly in multiple directions.

[0071] It should be pointed out that the parallel module is essentially a parallel mechanism in the mechanical sense. Therefore, the existing parallel mechanism is programmed using the PID controller algorithm. For carbon film plates of different sizes or models, the linear output of each servo electric cylinder 204 corresponding to the orientation and angle to be tested is preset, and it can be directly controlled in actual applications.

[0072] It is understandable that in the above technical solution: through the design of the parallel module, the universal angle adjustment of the housing 202 and the friction block 203 thereon is realized, which provides great flexibility for simulating different friction conditions. The precise control capability of the servo electric cylinder 204 enables the motion trajectory of the housing 202 to be accurately preset and controlled, thereby improving the accuracy and repeatability of the test. This design can adapt to friction blocks 203 of different sizes and shapes, further expanding the application range of the test device.

[0073] In the technical solution provided in this embodiment, please refer to Figure 4 The friction block 203 is preferably a prism. Considering that when the friction block 203 is adjusted at a universal angle, the area change of the contact surface can be used to introduce the parameter "pressure" into the friction test. However, since the friction block 203 in the form of a curved surface is not actually in surface contact but in point contact, "pressure" cannot be used. Therefore, the friction block 203 is preferably a prism.

[0074] Specifically: pressure is the ratio of force to the area of ​​action, and is one of the important parameters in friction testing. In the design of the prismatic friction block 203, the pressure applied to the carbon film plate under test can be precisely adjusted by changing the area of ​​the contact surface. In contrast, the friction block in the form of a curved surface is often in point contact when in contact, and its contact area is difficult to accurately control, so the pressure parameter cannot be effectively utilized.

[0075] It can be understood that in the above technical solution: by designing the friction block as a prism, the area of ​​the contact surface can be easily adjusted, thereby introducing the pressure parameter into the friction test (the pressure parameters corresponding to different positional relationships need to be planned in advance so that they can be obtained in the application). It is helpful to more comprehensively evaluate the wear resistance of the tested carbon film plate under different pressure conditions. The prismatic friction block allows the tester to accurately control the size of the contact surface according to the experimental requirements, thereby achieving precise control of the pressure. This improves the accuracy and repeatability of the test. Since the prism has multiple potential contact surfaces, friction tests can be performed at different angles and directions, further increasing the flexibility and comprehensiveness of the test.

[0076] In the technical solution provided in this embodiment, please refer to Figure 5 : The detection mechanism 4 includes a first slide plate 401 and a second slide plate 403 with a plurality of slide grooves evenly arranged in an array;

[0077] The test mechanism 2 and the linear module 3 are placed in the middle of the first slide plate 401. The first slide plate 401 is symmetrically referenced to the test mechanism 2, and pneumatic clamps 402 for clamping the carbon film plate to be tested are symmetrically arranged on both sides thereof.

[0078] The pneumatic clamp jaw 402 is detachably slidably matched on the slide groove of the first slide groove plate 401; according to the model and size of the carbon film plate to be tested, the pneumatic clamp jaw 402 can find the slide groove of the corresponding size and install it, and then slide and match it to adapt to the length and width of the carbon film plate to be tested; and the thickness is adapted by the pneumatic clamp jaw 402 itself during the clamping process; it is best to install a soft pad at the jaw to avoid damaging the carbon film plate to be tested;

[0079] The second slide plate 403 is fixed on the first slide plate 401. When the carbon film plate to be tested is clamped by the pneumatic clamp 402, the second slide plate 403 is located at the lower part of the carbon film plate to be tested. A test assembly is installed on the second slide plate 403. Due to the position characteristics of the second slide plate 403, when the friction assembly rubs on the upper part of the carbon film plate to be tested, the test assembly can perform resistance detection at the corresponding lower part of the carbon film plate to be tested.

[0080] Specifically: This design principle is based on the concepts of modularity and adaptability, so that the detection mechanism 4 can adapt to the carbon film plates of different sizes. Through the sliding fit and the detachable pneumatic jaws 402, the detection mechanism 4 can easily adapt to the carbon film plates of different lengths, widths and thicknesses. At the same time, the setting of the second slide plate 403 and the test assembly enables the resistance value to be detected simultaneously during the friction test, thereby improving the test efficiency and accuracy.

[0081] Preferably, length labels are attached to the slide grooves of the first slide groove plate 401 and the second slide groove plate 403 to assist the staff in determining the sliding positions of the pneumatic jaws 402 and the conductor patch 405 described later.

[0082] Optionally, the bottom of the carbon film board to be tested needs to be equipped with a hard plate body with a resistance value equivalent to that of the carbon film board to be tested, and the pneumatic clamp claw 402 can clamp the upper surface of the carbon film board to be tested and the lower surface of the hard plate body in the thickness direction to avoid the carbon film board to be directly broken due to excessive friction. However, after the hard plate body is introduced, the introduction of the hard plate body must be taken into account when calculating the resistance during the multimeter 404 test process described later.

[0083] It can be understood that in the above technical solution: through the design of the array slide and the detachable pneumatic jaws 402, the detection mechanism 4 can adapt to various models and sizes of carbon film plates to be tested. The soft pad design at the jaws of the pneumatic jaws 402 effectively avoids damage to the carbon film plate to be tested during the clamping process. The test assembly on the second slide plate 403 can perform resistance value detection while performing friction testing, achieving synchronization and high efficiency of the test process.

[0084] In the technical solution provided in this embodiment, please refer to Figure 5 The test assembly includes a multimeter 404 fixed on one side of the second slide plate 403, and also includes two detachable conductor patches 405 slidably fitted on the second slide plate 403, the conductor patches 405 are in contact with the lower surface of the carbon film plate to be tested; the two test leads of the multimeter 404 are electrically connected to the conductor patches 405.

[0085] Specifically: When the friction component performs a friction test on the upper surface of the carbon film plate under test, the resistance value of the carbon film plate under test may change. This change can be accurately measured by the test component. Specifically, the conductor patch 405 contacts the lower surface of the carbon film plate under test. As the friction proceeds, the resistance change on the surface of the carbon film plate is transmitted to the multimeter 404 through the conductor patch 405, and the multimeter 404 displays and records these changes in real time.

[0086] It is understandable that, since the conductor patches 405 are detachably slidably fitted on the second slide plate 403, they can be easily adjusted according to the size and shape of the carbon film plate to be tested to ensure good contact with the carbon film plate to be tested. This design not only improves the accuracy of the measurement, but also enhances the flexibility and adaptability of the test assembly.

[0087] It can be understood that in the above technical solution: through the cooperation of the multimeter 404 and the conductor patch 405, the resistance value change of the tested carbon film plate during the friction test can be accurately measured. The detachable sliding fit design of the conductor patch 405 enables the test assembly to adapt to the tested carbon film plates of different sizes and shapes. The multimeter 404 can display and record the change of the resistance value in real time, providing strong data support for analyzing the wear resistance of the tested carbon film plate.

[0088] It should be pointed out that, considering the influence of the carbon film plates of different thicknesses, the conductor patch 405 is preferably a device capable of adaptively changing height, such as a disc spring.

[0089] It should be noted that after the conductor patch 405 is introduced, the resistance value detected by the multimeter 404 is substantially reduced by the influence of the conductor patch 405 itself. This can be converted using the conventional Ohm's law or impedance formula. Of course, the conductor patch 405 may not be used, and the test lead of the multimeter 404 may be used directly for testing, which can also solve the technical problem to be solved.

[0090] In the technical solution provided in this embodiment, please refer to Figure 1~2 : The testing mechanism 2, the linear module 3 and the detection mechanism 4 are all installed on the workbench 1.

[0091] In summary, in view of the related problems in the traditional technology, this specific embodiment is based on the carbon film wear resistance process testing device provided above, and adopts the following technical means or features to achieve the solution:

[0092] (1) By using a parallel module test mechanism, the housing and the friction block thereon can perform multi-directional repeated motion friction in three-dimensional space.

[0093] (2) The friction block is designed as a prism. By adjusting the contact area between these contact surfaces and the carbon film plate being tested, the pressure applied to the carbon film plate being tested can be controlled. This design overcomes the limitation of the traditional technology that the curved surface friction block can only achieve point contact, making the pressure an adjustable variable.

[0094] (3) The detection mechanism includes a first slide plate and a second slide plate, so that the test device can adapt to the carbon film plates of different models and sizes. This flexibility enhances the versatility and practicality of the test device.

[0095] (4) The multimeter and two conductor patches in the test assembly are used to measure and record the resistance change of the carbon film plate during the friction process in real time. This precise measurement capability provides reliable data support for evaluating the wear resistance of the carbon film plate.

[0096] The above-mentioned embodiments only express the implementation methods of the relevant practical applications of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. Carbon film wear resistance process testing device, characterized in that: It comprises a testing mechanism (2) and a detection mechanism (4), wherein the detection mechanism (4) clamps the carbon film plate to be tested in a fixed length, width and / or height adjustable manner through a stepped clamping component, and tests the resistance value of the carbon film plate to be tested in real time through the testing component; The testing mechanism (2) comprises a parallel module and a friction component, and the testing mechanism (2) drives the surface of the carbon film plate to be tested to perform a friction test in a feeding and reciprocating manner through the friction component, and the roughness of the friction component is adjustable; The parallel module is used to adjust the friction component to perform universal angle adjustment compared to the surface of the carbon film plate being tested.

2. The carbon film wear resistance process testing device according to claim 1, characterized in that: It also comprises a linear module (3), wherein the linear module (3) is used to drive the testing mechanism (2) to move closer to or farther away from the carbon film plate to be tested.

3. The carbon film wear resistance process testing device according to claim 2, characterized in that: The linear module (3) comprises a servo motor (301) and a ball screw (302) driven by the servo motor, a moving platform (303) is mounted on the moving nut of the ball screw (302), and the testing mechanism (2) is mounted on the moving platform (303).

4. The carbon film wear resistance process testing device according to claim 1, characterized in that: The friction assembly comprises a housing (202) and a plurality of friction blocks (203) slidably fitted in the housing (202), wherein a friction surface with different roughness is evenly formed on a surface of the friction block (203) facing the carbon film plate to be tested; A cylinder (201) is installed outside the housing (202), and a piston rod of the cylinder (201) is connected to and pushes the friction block (203) to slide and adjust along the inner wall of the housing (202).

5. The carbon film wear resistance process testing device according to claim 4, characterized in that: A counting sensor (206) for reading the number of reciprocating feeds of the friction block (203) is installed in the housing (202).

6. The carbon film wear resistance process testing device according to claim 4, characterized in that: The parallel module comprises at least three servo electric cylinders (204), and the piston rods of the servo electric cylinders (204) are universally hinged to the housing (202) via universal joint couplings (205).

7. The carbon film wear resistance process testing device according to claim 1, 2 or 4, characterized in that: The detection mechanism (4) comprises a first slide slot plate (401) and a second slide slot plate (403) each having a plurality of slide slots uniformly formed in an array; The testing mechanism (2) is placed in the middle of the first slide plate (401), the first slide plate (401) is symmetrically referenced to the testing mechanism (2), and pneumatic clamps (402) for clamping the carbon film plate to be tested are symmetrically provided on both sides thereof; The pneumatic clamp claw (402) is detachably slidably engaged with the slide groove of the first slide groove plate (401); The second slide plate (403) is fixedly arranged on the first slide plate (401); when the carbon film plate to be tested is clamped by the pneumatic clamp (402), the second slide plate (403) is located at the lower part of the carbon film plate to be tested; and the test assembly is installed on the second slide plate (403).

8. The carbon film wear resistance process testing device according to claim 7, characterized in that: The test assembly comprises a multimeter (404) fixedly mounted on one side of the second slide plate (403), and also comprises two conductor patches (405) detachably slidably fitted on the second slide plate (403), wherein the conductor patches (405) are in contact with the lower surface of the carbon film plate to be tested; The two test leads of the multimeter (404) are electrically connected to the conductor patch (405).

9. The carbon film wear resistance process testing device according to claim 1, 2 or 4, characterized in that: The testing mechanism (2) and the detection mechanism (4) are both installed on the workbench (1).

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