Test fixtures and test systems

Abstract

This application relates to a test fixture and a test system. The test fixture includes a base plate and a pressure plate, with the pressure plate disposed on one side of the base plate. A limiting space for confining a cotton wick liquid guide component is formed between the base plate and the pressure plate, and the pressure plate has a liquid inlet communicating with the limiting space. In the above-mentioned test fixture, the cotton wick liquid guide component is confined within the limiting space formed between the base plate and the pressure plate. The base plate and the pressure plate can jointly compress the cotton wick liquid guide component, thus accurately simulating the compression state of the cotton wick liquid guide component under actual working conditions, thereby effectively improving the test accuracy and obtaining the seepage rate of the cotton wick liquid guide component under actual working conditions. Moreover, since the pressure plate has a liquid inlet, a syringe can droplets are applied to the cotton wick liquid guide component through the liquid inlet, and a camera can simultaneously acquire an image of the cotton wick liquid guide component through the liquid inlet, thereby obtaining the seepage rate of the cotton wick liquid guide component. The experimenter can also directly observe the seepage of the droplets through the liquid inlet.

Description

Technical Field

[0001] This application relates to the field of atomization technology, and in particular to a test fixture and test system. Background Technology

[0002] In some atomizing devices, the aerosol generating matrix in the storage chamber is conducted to the heating end through a liquid guiding component such as a cotton wick for heating and atomization. The atomized aerosol generating matrix produces aerosols that can be absorbed by the human body through the respiratory system. Therefore, the liquid guiding performance of the liquid guiding component is one of the core indicators affecting the atomized taste and user experience.

[0003] However, there is currently no unified standard for testing the fluid conductivity of fluid-conducting components. Due to technical defects, existing testing methods cannot effectively simulate the actual compression conditions of fluid-conducting components, resulting in a large deviation between the test data and the actual performance, and thus failing to accurately reflect the fluid conductivity of the components. Utility Model Content

[0004] Therefore, it is necessary to provide a test fixture, a test system, and a method for testing leakage rate to address the problem that the performance test methods for liquid-conducting components cannot accurately reflect their liquid-conducting performance.

[0005] A test fixture is used to test the seepage rate of a cotton wick liquid guide. The test fixture includes a base plate and a pressure plate. The pressure plate is disposed on one side of the base plate. A limiting space for limiting the cotton wick liquid guide is formed between the base plate and the pressure plate. The pressure plate has an inlet that communicates with the limiting space.

[0006] In one embodiment, the pressure plate includes a liquid inlet portion that protrudes in a direction away from the substrate, the liquid inlet portion has an arc-shaped cross-section, and the liquid inlet is formed through the liquid inlet portion.

[0007] In one embodiment, the substrate has a protrusion extending into the liquid inlet portion on the side facing the pressure plate, and the cross-section of the protrusion is arc-shaped.

[0008] In one embodiment, a limiting post protrudes from the side surface of the substrate facing the pressure plate, and the pressure plate abuts against the limiting post.

[0009] In one embodiment, the substrate and the pressure plate attract each other under magnetic force.

[0010] In one embodiment, a first adsorption member is embedded on the side of the substrate facing away from the pressure plate, and a second adsorption member is embedded on the side of the pressure plate facing away from the substrate. The first adsorption member and the second adsorption member attract each other under magnetic force.

[0011] A testing system includes the aforementioned testing fixture, and the testing system further includes a syringe located on one side of the testing fixture, the syringe being used to add liquid droplets to the liquid inlet of the testing fixture.

[0012] In one embodiment, the testing system further includes a camera located on one side of the testing fixture, with the syringe and the testing fixture within the imaging range of the camera.

[0013] In one embodiment, the testing system further includes a light-emitting unit located on the side of the testing fixture away from the camera.

[0014] In one embodiment, the testing system further includes a constant temperature water bath device with a constant temperature cavity, wherein the testing fixture and the syringe are located inside the constant temperature cavity.

[0015] In the aforementioned test fixture, the cotton wick liquid guide is confined within the limiting space formed between the substrate and the pressure plate. The substrate and the pressure plate can jointly compress the cotton wick liquid guide, thus accurately simulating the compression state of the cotton wick liquid guide under actual working conditions. This effectively improves the test accuracy and allows for the determination of the seepage rate of the cotton wick liquid guide under actual working conditions. Furthermore, since the pressure plate has a liquid inlet, a syringe can droplets are applied to the cotton wick liquid guide through the inlet. Simultaneously, a camera can acquire an image of the cotton wick liquid guide through the inlet, thereby obtaining the seepage rate. The experimenter can also directly observe the seepage of the droplets through the inlet. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a test system according to an embodiment of this application.

[0019] Figure 2 This is a schematic diagram of the installation of the test fixture and the cotton core liquid guide component according to an embodiment of this application.

[0020] Figure 3 for Figure 2 The diagram shows an exploded view of the test fixture and the cotton core liquid guiding component.

[0021] Figure 4 This is a schematic diagram of the structure of a substrate according to an embodiment of this application.

[0022] Figure 5 This is a schematic flowchart of an embodiment of the seepage rate testing method of this application.

[0023] Explanation of reference numerals in the attached figures:

[0024] 100. Testing system; 120. Testing fixture; 120a. Limiting space; 121. Substrate; 1212. Protrusion; 121a. First mounting groove; 123. Pressure plate; 1232. Liquid inlet; 1232a. Liquid inlet; 123a. Second mounting groove; 125. Limiting post; 127. First adsorption element; 129. Second adsorption element; 140. Liquid injection unit; 160. Imaging unit; 180. Light emission unit; 200. Cotton core liquid guide. Detailed Implementation

[0025] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0026] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0027] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0028] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0029] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0030] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0031] As described in the background section, to obtain the seepage rate of cotton wick liquid guides, some existing seepage testing methods involve immersing the cotton wick liquid guide in an aerosol matrix and weighing it periodically to calculate the amount of liquid absorbed by the cotton wick liquid guide within a certain time period, thereby obtaining the seepage rate. However, this testing method cannot simulate the compression conditions of the cotton wick liquid guide during actual operation, leading to deviations in the test data. Furthermore, it requires frequent disassembly and weighing of the cotton wick liquid guide, making the testing process cumbersome and demanding on the operator's skills.

[0032] Other existing methods for testing leakage involve sequentially setting multiple clamps along the length of the cotton core liquid guide and recording the time required for the aerosol-generating matrix to travel to each clamp, thus obtaining the leakage rate of the cotton core liquid guide. However, this method requires manual recording of the aerosol-generating matrix's ascent time within the cotton core liquid guide. If the aerosol-generating matrix's color is not obvious and difficult to observe, this can lead to significant testing errors.

[0033] Furthermore, the above testing methods are difficult to be compatible with / compare different specifications (diameter, number of layers, compression ratio) of cotton core liquid guiding components, thus having a limited scope of application and being unable to accurately measure the seepage rate of cotton core liquid guiding components of different specifications.

[0034] In response to the above technical problems, such as Figure 1 As shown, an embodiment of this application provides a testing system 100 for testing the seepage rate of a sample.

[0035] In the following embodiments, the sample is a cotton wick liquid guide 200 applied to an electronic atomizing device. During the testing process, the cotton wick liquid guide 200 is in an unfolded state. When installed in an electronic atomizing device, the cotton wick liquid guide 200 is in a rolled-up or folded state.

[0036] In the following embodiments, the test liquid used for the leakage test is an aerosol generating matrix applied to the electronic atomization device. The aerosol generating matrix includes, but is not limited to, medicinal liquids, oils, etc., used for medical, health, and beauty purposes. When the electronic atomization device is in operation, the aerosol generating matrix is ​​conducted to the heating end of the electronic atomization device through the cotton wick liquid guide 200 for heating and atomization, thereby generating an aerosol for the user to use.

[0037] It is understood that the application scenarios of the test system 100 of this application are not limited to this. In some other embodiments, the test system 100 can also be used to obtain the seepage rate of other different types of samples. The type of test liquid used to permeate the sample can also be set as needed and is not limited here.

[0038] Please continue reading. Figure 1 The testing system 100 includes a testing fixture 120, a liquid injection unit 140, and an imaging unit 160. The testing fixture 120 is used to fix and compress the cotton core liquid guide 200. The liquid injection unit 140 is used to add aerosol to the cotton core liquid guide 200 to generate matrix droplets. The imaging unit 160 is used to acquire images of the droplets entering the cotton core liquid guide 200, thereby obtaining the seepage time of the droplets entering the cotton core liquid guide 200. Finally, the permeation rate of the cotton core liquid guide 200 is calculated based on the droplet volume and the seepage time.

[0039] like Figures 2 to 4As shown, the test fixture 120 includes a base plate 121 and a pressure plate 123. The pressure plate 123 is disposed on one side of the base plate 121. A limiting space 120a for limiting the cotton core liquid guide 200 is formed between the base plate 121 and the pressure plate 123. The pressure plate 123 has an inlet 1232a that communicates with the limiting space 120a.

[0040] Thus, the cotton core liquid guide 200 is confined within the limiting space 120a formed between the substrate 121 and the pressure plate 123. The substrate 121 and the pressure plate 123 can jointly compress the cotton core liquid guide 200, thereby accurately simulating the compression state of the cotton core liquid guide 200 under actual working conditions, effectively improving the test accuracy and obtaining the seepage rate of the cotton core liquid guide 200 under actual working conditions. Moreover, since the pressure plate 123 has a liquid inlet 1232a, the injection unit 140 can add liquid droplets to the cotton core liquid guide 200 through the liquid inlet 1232a, and the imaging unit 160 can acquire an image of the cotton core liquid guide 200 through the liquid inlet 1232a, thereby obtaining the seepage rate of the cotton core liquid guide 200. The experimenter can also directly observe the seepage situation through the liquid inlet 1232a.

[0041] Specifically, the substrate 121 has a rectangular flat plate structure. In the following embodiments, the length direction of the substrate 121 is defined as the first direction (i.e., Figure 2 The width direction of the substrate 121 is the second direction (i.e., the X direction in the X direction). Figure 2 The thickness direction of the substrate 121 is a third direction (i.e., the Y direction in the middle). Figure 2 In the Z direction), the first direction, the second direction, and the third direction intersect each other, and in a preferred embodiment, the first direction, the second direction, and the third direction are perpendicular to each other.

[0042] Furthermore, a plurality of limiting posts 125 are protruding from the surface of the substrate 121 facing the pressure plate 123. Each limiting post 125 has a cylindrical structure, and the central axis of each limiting post 125 extends along a third direction. The pressure plate 123 abuts against the end of the limiting post 125 away from the substrate 121. Specifically, in one embodiment, there are four limiting posts 125, with one limiting post 125 at each of the four apex corners of the substrate 121, thereby ensuring the uniformity of the gap in the limiting space 120a in the third direction. It is understood that the number, shape, and placement of the limiting posts 125 are not limited and can be set as needed to meet different requirements.

[0043] The pressure plate 123 has a rectangular plate structure, and its shape is similar to that of the substrate 121. The edge of the orthographic projection of the pressure plate 123 onto the substrate 121 is located inside the edge of the substrate 121. The length direction of the pressure plate 123 is parallel to a first direction, the width direction is parallel to a second direction, and the thickness direction is parallel to a third direction. The four apex corners of the pressure plate 123 abut against four limiting posts 125. In a preferred embodiment, the pressure plate 123 has grooves corresponding to the limiting posts 125, and one end of each limiting post 125 is confined within the groove, thereby preventing the pressure plate 123 from moving relative to the substrate 121.

[0044] Thus, by adjusting the thickness of the substrate 121 and the height of the limiting post 125, limiting spaces 120a of different heights can be formed, thereby matching cotton wick liquid guiding components 200 of different thicknesses. Specifically, in one embodiment, the height of the limiting space 120a can be 0.9mm, 1.0mm, 1.1mm, or 1.2mm. It is understood that the height of the limiting space 120a is not limited to these and can be set as needed to meet different experimental requirements.

[0045] In some embodiments, the pressure plate 123 includes a liquid inlet 1232, which is located at the middle position of the pressure plate 123 in a first direction. The liquid inlet 1232 extends from one edge of the pressure plate 123 in a second direction to the other edge of the pressure plate 123 in the second direction. The liquid inlet 1232 protrudes in a direction away from the substrate 121, and its cross-section perpendicular to the second direction is arc-shaped. A liquid inlet 1232a is formed through the liquid inlet 1232. The shape of the liquid inlet 1232a can be oblong, elliptical, circular, rectangular, etc. It is understood that the shape and size of the liquid inlet 1232a are not limited and can be provided as needed to meet different requirements.

[0046] Matching the shape of the pressure plate 123, the substrate 121 has a protrusion 1212 extending into the liquid inlet 1232 on the side facing the pressure plate 123, and the cross section of the protrusion 1212 perpendicular to the second direction is arc-shaped.

[0047] Thus, the shapes of the liquid inlet 1232 and the protrusion 1212 match to form part of the limiting space 120a. The cotton wick liquid guide 200 is partially confined between the protrusion 1212 and the liquid inlet 1232, and is bent under the clamping of the protrusion 1212 and the liquid inlet 1232. Since the liquid inlet 1232 and the protrusion 1212 protrude outward, the cotton wick liquid guide 200 also protrudes outward, thereby facilitating imaging by the imaging unit 160 and observation by the experimenter, without being obstructed by other parts of the test fixture 120.

[0048] In some embodiments, in order to achieve quick assembly and disassembly of the cotton core liquid guiding component 200, the substrate 121 and the pressure plate 123 are attracted to each other under the action of magnetic force. Therefore, the substrate 121 and the pressure plate 123 can be quickly installed under the action of magnetic force. When it is necessary to disassemble the cotton core liquid guiding component 200, the experimenter only needs to overcome the magnetic force to separate the substrate 121 and the pressure plate 123 and take out the cotton core liquid guiding component 200.

[0049] In one specific embodiment, the substrate 121 has two first mounting grooves 121a on the side facing away from the pressure plate 123. These two first mounting grooves 121a are located on opposite sides of the protrusion 1212 in a first direction. Each first mounting groove 121a contains a first adsorption member 127, the shape of which matches the shape of the first mounting groove 121a. The pressure plate 123 has two second mounting grooves 123a on the side facing away from the substrate 121. These two second mounting grooves 123a are located on opposite sides of the liquid inlet 1232 in a first direction. Each second mounting groove 123a contains a second adsorption member 129, the shape of which matches the shape of the second mounting groove 123a. The first adsorption member 127 and the second adsorption member 129 can be magnets with opposite magnetic properties. Therefore, the first adsorption member 127 and the second adsorption member 129 attract each other under magnetic force, thereby connecting the substrate 121 and the pressure plate 123. It is understood that the number, shape, and position of the first mounting slot 121a and the second mounting slot 123a are not limited and can be set as needed to meet different requirements.

[0050] In some embodiments, the test fixture 120 is made of transparent plastic (e.g., polycarbonate, copolyester, polymethyl methacrylate), thus providing good light transmittance. The experimenter can observe the compression and leakage of the cotton core liquid guide 200 through the test fixture 120. It is understood that the material forming the test fixture 120 is not limited to this and can be configured as needed to meet different requirements.

[0051] The injection unit 140 is located on one side of the test fixture 120, specifically on the side of the inlet 1232a away from the substrate 121 in the third direction. The injection unit 140 is a syringe, including a syringe barrel, a plunger, and an injection needle. The injection needle is installed outside one end of the syringe barrel, and one end of the plunger is inserted into the syringe barrel. The aerosol generation matrix is ​​stored inside the syringe barrel. The plunger can move inside the syringe barrel under external force, thereby pushing the aerosol generation matrix through the injection needle and dripping in the third direction, thus adding aerosol generation matrix droplets to the cotton core liquid guide 200 through the inlet 1232a. In a preferred embodiment, the distance between the injection needle and the cotton core liquid guide 200 is the height of one droplet.

[0052] Imaging unit 160 is located on one side of test fixture 120 in the first direction, and injection unit 140 and test fixture 120 are located within the imaging range of imaging unit 160. Specifically, imaging unit 160 includes a camera that continuously captures the droplet penetration process and generates a video file with embedded millisecond-level timestamps. As a preferred embodiment, the shooting angle of imaging unit 160 can be adjusted as needed to obtain a clearer image.

[0053] Thus, based on the video recording from the imaging unit 160, the time point t1 when the droplet just detaches from the injection needle of the injection unit 140 and the time point t2 when the droplet completely enters the cotton core liquid guide 200 can be obtained. Then, the seepage time ΔT of the droplet can be obtained from time points t1 and t2. Combined with the droplet volume V, the seepage rate υ of the cotton core liquid guide 200 can be obtained using the formula υ=V / ΔT (μL / s). Here, the time point t2 when the droplet completely enters the cotton core liquid guide 200 refers to the time when the specular reflection of the droplet completely disappears and there is no visible reflection on the surface of the cotton core liquid guide 200. The droplet volume V is 5μL to 15μL, which can be adjusted according to the properties of the aerosol generating matrix, representing the volume of a single drop of aerosol generating matrix that falls freely.

[0054] In some embodiments, the test system 100 further includes a light-emitting unit 180, which is located on the side of the test fixture 120 away from the imaging unit 160 in a first direction. The light-emitting unit 180 is used to provide a good lighting environment for the imaging unit 160, thereby improving the imaging clarity of the imaging unit 160 and facilitating observation by the experimenter.

[0055] In some embodiments, the testing system 100 further includes a thermostatic unit (not shown) with a thermostatic cavity. The test fixture 120 and the liquid injection unit 140 are located inside the thermostatic cavity. By adjusting the temperature inside the thermostatic cavity, the seepage rate under different temperature environments can be tested. Specifically, in one embodiment, the thermostatic unit is a thermostatic water bath device, including a bath tank and a heating element. The bath tank forms a thermostatic cavity for holding a heating medium (e.g., water, silicone oil, ethylene glycol aqueous solution, etc.). The heating element can be an electric heating tube or a heating element, etc. The heating element is immersed in the heating medium to heat the heating medium. The test fixture and the liquid injection unit can be placed in the heating medium through a container.

[0056] The aforementioned test fixture 120 and test system 100 can limit and compress the cotton core liquid guide 200 through the standardized test fixture 120 to simulate the compression state under actual working conditions, thereby obtaining the seepage rate of the cotton core liquid guide 200 during actual operation. Furthermore, the test fixture 120, through the cooperation of the base plate 121 and the pressure plate 123, limits the cotton core liquid guide 200, enabling rapid configuration and disassembly of the cotton core liquid guide 200, resulting in high testing efficiency. In addition, the test fixture 120 can test cotton core liquid guides 200 of different sizes, and by changing different base plates 121 to match cotton core liquid guides 200 of different thicknesses, different compression efficiencies can be achieved. The test system 100, through the cooperation of the injection unit 140 and the imaging unit 160, achieves precise quantitative dripping and precise control of the dripping position, and can record the seepage process for video playback-based judgment and re-verification, effectively improving the control accuracy of various elements in the testing process.

[0057] like Figure 5 As shown, this application also provides a method for testing the seepage rate, using the above-mentioned testing system 100 to test the seepage rate of the cotton core liquid guiding component 200. The seepage rate testing method includes the following steps:

[0058] Step S110: Add liquid droplets onto the cotton core liquid guide component that is limited to the limiting space.

[0059] Specifically, the cotton core liquid guide 200 is confined in the limiting space 120a of the test fixture 120, and part of the surface of the cotton core liquid guide 200 is exposed above the liquid inlet 1232a. The liquid injection unit 140 is controlled to drip liquid droplets, which pass through the liquid inlet 1232a and reach the cotton core liquid guide 200.

[0060] Step S120: Obtain the seepage time ΔT from the time the droplet leaves the injection unit until it is completely absorbed into the cotton core liquid guide.

[0061] From the moment the droplet leaves the injection needle of the injection unit 140 until it is completely absorbed into the cotton wick liquid guide 200, the imaging unit 160 continuously records and generates a video file with timestamps. Based on this video file, the time point t1 when the droplet just leaves the injection needle of the injection unit 140 and the time point t2 when the droplet is completely absorbed into the cotton wick liquid guide 200 can be obtained. Furthermore, the absorption time ΔT of the droplet can be obtained from time points t1 and t2. Here, time point t2 when the droplet is completely absorbed into the cotton wick liquid guide 200 refers to the time when the specular reflection of the droplet completely disappears and there is no visible reflection on the surface of the cotton wick liquid guide 200.

[0062] Step S130: According to the formula υ=V / △T (μL / s), the seepage rate υ of the cotton core liquid guiding component is obtained; where V is the volume of the liquid droplet.

[0063] Since the volume V of the dripping droplets can be kept constant by controlling the injection unit 140, the seepage rate υ of the cotton core liquid guiding component 200 can be obtained according to the formula υ=V / △T (μL / s).

[0064] The above-mentioned seepage rate test method can simulate the compression state of the cotton core liquid guiding component 200 under actual working conditions, so that the test results are closer to the actual performance of the cotton core liquid guiding component 200. Furthermore, it can be judged and re-verified based on video playback, thus having higher test accuracy and effectively avoiding misjudgment.

[0065] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0066] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A test fixture for testing the seepage rate of a cotton wick liquid-conducting component, characterized in that, The test fixture includes a base plate and a pressure plate. The pressure plate is disposed on one side of the base plate, and a limiting space is formed between the base plate and the pressure plate to limit the cotton core liquid guiding component. The pressure plate has an inlet that communicates with the limiting space.

2. The test fixture of claim 1, wherein, The pressure plate includes a liquid inlet portion that protrudes away from the substrate. The cross-section of the liquid inlet portion is arc-shaped, and the liquid inlet is opened through the liquid inlet portion.

3. The test fixture of claim 2, wherein, The substrate has a protrusion extending into the liquid inlet portion on the side facing the pressure plate, and the cross-section of the protrusion is arc-shaped.

4. The test fixture of claim 1, wherein, The substrate has a limiting post protruding from the side surface facing the pressure plate, and the pressure plate abuts against the limiting post.

5. The test fixture of claim 1, wherein, The substrate and the pressure plate attract each other under magnetic force.

6. The test fixture of claim 5, wherein, A first adsorption element is embedded on the side of the substrate facing away from the pressure plate, and a second adsorption element is embedded on the side of the pressure plate facing away from the substrate. The first adsorption element and the second adsorption element attract each other under the action of magnetic force.

7. A test system, characterized by The test system includes the test fixture as described in any one of claims 1 to 6, and further includes a syringe located on one side of the test fixture, the syringe being used to add a drop of liquid to the inlet of the test fixture.

8. The test system of claim 7, wherein, The testing system also includes a camera located on one side of the testing fixture, and the syringe and the testing fixture are within the imaging range of the camera.

9. The test system of claim 8, wherein, The testing system also includes a light-emitting unit located on the side of the testing fixture away from the camera.

10. The test system of claim 7, wherein, The testing system also includes a constant temperature water bath device with a constant temperature cavity, and the testing fixture and the syringe are located inside the constant temperature cavity.

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