A test system and method for testing the performance of shape memory hair fibers

Abstract

This invention discloses a shape memory hair fiber performance testing system, comprising a body assembly, a data acquisition module, a clamping mechanism, a simulation mechanism, and an analysis module. The simulation mechanism simulates the daily hair combing behavior; the clamping mechanism clamps and fixes the fiber sample to be tested. By setting up a simulation mechanism specifically for hair fiber bundle detection, the system can more realistically simulate the daily hair combing behavior and collect displacement data of the simulation mechanism and load data between the clamping mechanism and the body assembly during the simulated combing process. The collected displacement and load data are analyzed to calculate the variance and standard deviation of the load values ​​detected at each sampling point in the dataset. Based on the calculated variance and standard deviation results, the combability performance of the fiber bundle under test is graded to characterize the combability performance of the fiber sample.

Description

Technical Field

[0001] This invention relates to the field of wig hair fiber production technology, and in particular to a shape memory hair fiber performance testing system and testing method. Background Technology

[0002] The combability of wigs refers to the tribodynamic state of the wig surface under certain temperature and humidity conditions when subjected to external combing tools (such as combs, hairbrushes, hair dryers, and human hands), as well as the methods and indicators applied to characterize the tribodynamic properties of combing. The combability of wigs is one of the important indicators for evaluating wig products, directly reflecting the quality of the wig fibers, and is of great significance for testing and characterizing the combing performance of wig fibers.

[0003] In existing technologies, the combability of hair fibers is characterized by the tribodynamic state of the hair fibers during combing. However, due to the lack of equipment for testing the combability of wig hair fiber bundles, there is a large deviation between the test results and the actual values. To address this, we propose a shape memory hair fiber performance testing system and method. Summary of the Invention

[0004] The main objective of this invention is to provide a shape memory hair fiber performance testing system and method, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A shape memory hair fiber performance testing system includes a main body assembly, a data acquisition module, a clamping mechanism, a simulation mechanism, and an analysis module. Both the clamping mechanism and the simulation mechanism are installed inside the main body assembly. The simulation mechanism simulates the actions of daily hair combing. The clamping mechanism clamps and fixes the fiber sample to be tested. The data acquisition module is installed between the clamping mechanism and the main body assembly to acquire displacement data of the simulation mechanism and load data between the clamping mechanism and the main body assembly. The analysis module acquires and analyzes the displacement and load data, and characterizes the combability performance evaluation value of the fiber sample to be tested through the analysis results.

[0007] The simulation mechanism includes a drive component, a fixing component, a connecting component, and a combing component. The drive component includes a drive motor, which is mounted on the upper end of the machine body. A coupling is connected to the end of the main shaft of the drive motor, and a drive roller is connected to the other end of the coupling. A through groove is provided on the outer end face of the drive roller.

[0008] The fixing component includes a fixing seat, one end of which is connected to the machine body assembly, and the other end is connected to symmetrically distributed guide seats. The end face of the guide seats is provided with a through guide groove and a turning part arranged in an arc shape. The inner side of the guide seats is connected to the drive roller through a bearing.

[0009] The connecting assembly includes a slider, one end of which is slidably connected to the drive roller via a cylindrical protrusion, and the other end is connected to a snap-fit ​​connector via a rotating shaft. Slide rods are symmetrically provided on the outer end faces of both the slider and the snap-fit ​​connector. A deflector is rotatably connected to the outer side of the slide rod. The deflector includes multiple deflector joints, which are connected sequentially, and adjacent deflector joints are rotatably connected. The slide rods located on the outer end face of the slider slide inside the guide groove of the guide seat.

[0010] The comb assembly includes an outer shell, which is engaged with a snap-fit ​​connector on its outer side. The outer end face of the outer shell is provided with evenly distributed fixed comb teeth. The inner shell is provided with a double-ended screw, and the end of the double-ended screw is connected to an adjustment handle by a thread. The middle outer side of the double-ended screw is provided with an inner shell, and the outer end face of the inner shell is provided with evenly distributed movable comb teeth. The outer end face of the outer shell is provided with a mounting groove, and the movable comb teeth pass through the mounting groove of the outer shell and are staggered with the fixed comb teeth.

[0011] Furthermore, the clamping mechanism includes a mounting frame, inside which symmetrically distributed cylinders are installed, and the extended ends of the cylinders are connected to clamping plates.

[0012] Furthermore, the acquisition module includes a force sensor assembly and a displacement sensor assembly. The force sensor assembly is installed between the mounting frame and the body assembly, and the displacement sensor assembly is installed on the slider of the connecting assembly.

[0013] Furthermore, the analysis module includes a signal receiving unit, a processing unit, and an output unit. The signal receiving unit is used to receive detection signals from the force sensor assembly and the displacement sensor assembly. The processing unit is used to analyze the received sensor detection values ​​and obtain analysis results. The output unit is used to output the analysis results from the processing unit.

[0014] Furthermore, the analysis module also includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to perform the function described in claim 4.

[0015] A method for testing the performance of shape memory hair fibers, the method comprising the following steps:

[0016] Step 1: Take several fiber samples to be tested, arrange them into fiber bundles with flat ends, fix the root of the fiber bundle along the direction of the fiber scales, so that the fiber bundle hangs naturally.

[0017] Step 2: Simulate daily combing motions to comb the fiber bundle under test. Using a fixed displacement range as sampling points, detect the load value between the fiber bundle under test and the comb during the combing process, and record the displacement and corresponding load value data of the comb from the start to the end of the combing process.

[0018] Step 3: Repeat step 2 several times to obtain multiple sets of displacement and corresponding load value datasets.

[0019] Step 4: Calculate the variance and standard deviation of the load values ​​detected at each sampling point in the dataset.

[0020] Step 5: Classify the combability of the fiber bundle under test based on the calculated variance and standard deviation values.

[0021] Furthermore, the specific steps of step five are as follows:

[0022] Step 1: Create a sample set using the calculated variance or standard deviation values, denoted as {P1, P2, ..., P3}. m};

[0023] Step 2: Obtain the mean and standard deviation of the sample set, and standardize the data using the mean and standard deviation. The standardization formula is: In this formula, z is the standard parameter, σ is the variance of the sample data, and μ is the mean of the sample data;

[0024] Step 3: After standardization is completed, utilize the standard parameters. The numerical range is adjusted to [0,1], and the combinability properties of the fiber bundle under test are classified using the function value of f(k). The classification mechanism is as follows:

[0025] When f(k)min≤f(k)<f(k)1, the combability of the fiber bundle under test is classified as Level 1;

[0026] When f(k)1≤f(k)<f(k)2, the combability of the fiber bundle under test is classified as level two;

[0027] When f(k)2≤f(k)<f(k)max, the combability of the fiber bundle under test is classified into three levels;

[0028] Where f(k)min and f(k)max are the minimum and maximum values ​​of the function f(k), respectively, and f(k)1 and f(k)2 are the intermediate values ​​of f(k), respectively.

[0029] The specific implementation steps of the present invention are as follows:

[0030] Step 1) Take several fiber samples to be tested, arrange them into fiber bundles with flat ends, fix the root of the fiber bundle along the direction of the fiber bundle scales, place the root of the fiber bundle in the middle of the clamping plate of the clamping mechanism, start the cylinder to make the clamping plates on both sides retract inward, fix the root of the fiber bundle, and make the fiber bundle hang naturally.

[0031] Step 2) Zero the force sensor component and displacement sensor component of the acquisition module so that the output load of the force sensor component is zero when the fiber bundle is in a natural hanging state.

[0032] Step 3) Start the drive motor of the simulation mechanism. The drive motor drives the drive roller to rotate and drives the combing assembly to reciprocate through the connecting component, simulating the daily combing action to comb the fiber bundle under test.

[0033] Step 4) Using a fixed displacement range as the sampling point, detect the load value between the fiber bundle to be tested and the comb during the combing process, and record the displacement of the comb from the start time to the end time and the corresponding load value data. Repeat the above steps several times to obtain multiple sets of displacement and corresponding load value datasets.

[0034] Step 5) Calculate the variance and standard deviation of the load values ​​detected at each sampling point in the dataset;

[0035] Step 6) Classify the combability of the fiber bundle under test based on the calculated variance and standard deviation values.

[0036] The present invention has the following beneficial effects:

[0037] 1) The proposed solution of this invention can more realistically simulate the daily combing behavior by setting up a simulation mechanism for detecting hair fiber bundles, thereby obtaining more realistic and reliable detection data. By collecting displacement data of the simulation mechanism and load data between the clamping mechanism and the machine body during the simulated combing process, the collected displacement data and load data are analyzed to calculate the variance and standard deviation of the load values ​​detected at each sampling point in the data set. Based on the calculated variance and standard deviation results, the combability performance of the fiber bundle under test is graded to characterize the combability performance of the fiber sample under test. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the structure of the simulation mechanism of the shape memory hair fiber performance testing system of the present invention;

[0039] Figure 2 This is an exploded structural diagram of the simulation mechanism of the shape memory hair fiber performance testing system of the present invention;

[0040] Figure 3 This is a front view of the simulation mechanism of a shape memory hair fiber performance testing system according to the present invention;

[0041] Figure 4 This is a top view of the simulation mechanism of a shape memory hair fiber performance testing system according to the present invention;

[0042] Figure 5 for Figure 4 Schematic diagram of the structure of section A;

[0043] Figure 6 This is a schematic diagram of the simulation mechanism of the shape memory hair fiber performance testing system of the present invention from another angle;

[0044] Figure 7 This is an external view of a shape memory hair fiber performance testing system according to the present invention.

[0045] In the diagram: 1. Body assembly; 201. Drive motor; 202. Coupling; 203. Drive roller; 204. Slide groove; 211. Fixed seat; 212. Guide seat; 213. Guide groove; 214. Steering part; 221. Sliding head; 222. Snap joint; 223. Slide rod; 224. Directional component; 225. Directional joint; 231. Outer shell; 232. Fixed comb teeth; 233. Double-ended screw; 234. Adjusting handle; 235. Inner shell; 236. Moving comb teeth; 237. Mounting slot; 301. Mounting frame; 302. Cylinder; 303. Clamping plate; 401. Force sensor assembly; 402. Displacement sensor assembly. Detailed Implementation

[0046] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the present invention. In order to better illustrate the specific embodiments of the present invention, some parts in the drawings may be omitted, enlarged or reduced, and do not represent the actual product size.

[0047] Example 1

[0048] like Figure 1-7 As shown, a shape memory hair fiber performance testing system includes a body assembly 1, a data acquisition module, a clamping mechanism, a simulation mechanism, and an analysis module. Both the clamping mechanism and the simulation mechanism are installed inside the body assembly 1. The simulation mechanism simulates the actions of daily hair combing; the clamping mechanism clamps and fixes the fiber sample to be tested; the data acquisition module is installed between the clamping mechanism and the body assembly 1 to acquire displacement data of the simulation mechanism and load data between the clamping mechanism and the body assembly 1; the analysis module acquires and analyzes the displacement and load data, and characterizes the combability performance evaluation value of the fiber sample to be tested through the analysis results.

[0049] In this embodiment, the simulation mechanism includes a drive component, a fixing component, a connecting component, and a combing component. The drive component includes a drive motor 201, which is mounted on the upper end of the body assembly 1. A coupling 202 is connected to the end of the main shaft of the drive motor 201, and a drive roller 203 is connected to the other end of the coupling 202. A through groove 204 is provided on the outer end face of the drive roller 203.

[0050] The fixing assembly includes a fixing seat 211. One end of the fixing seat 211 is connected to the machine body assembly 1, and the other end is connected to symmetrically distributed guide seats 212. The end face of the guide seat 212 is provided with a through guide groove 213 and a turning part 214 arranged in an arc shape. The inner side of the guide seat 212 is connected to the drive roller 203 through a bearing.

[0051] The connecting assembly includes a slider 221. One end of the slider 221 is slidably connected to the drive roller 203 via a cylindrical protrusion. The inner side of the other end is connected to a snap-fit ​​connector 222 via a rotating shaft. Slide rods 223 are symmetrically provided on the outer end faces of both the slider 221 and the snap-fit ​​connector 222. A deflector 224 is rotatably connected to the outer side of the slide rod 223. The deflector 224 includes multiple deflector joints 225, which are connected in sequence. Adjacent deflector joints 225 are rotatably connected. The slide rods 223 provided on the outer end face of the slider 221 slide inside the guide groove 213 of the guide seat 212.

[0052] The comb assembly includes an outer shell 231, which is engaged with a snap-fit ​​connector 222 on its outer side. The outer end face of the outer shell 231 is provided with evenly distributed fixed comb teeth 232. The outer shell 231 is provided with a double-ended screw 233 inside. The end of the double-ended screw 233 is connected to an adjustment handle 234 by a thread. The middle outer side of the double-ended screw 233 is provided with an inner shell 235. The outer end face of the inner shell 235 is provided with evenly distributed movable comb teeth 236. The outer end face of the outer shell 231 is provided with a mounting groove 237. The movable comb teeth 236 pass through the mounting groove 237 of the outer shell 231 and are staggered with the fixed comb teeth 232.

[0053] The operation process of the simulation mechanism is as follows: when the drive motor 201 rotates, it drives the drive roller 203 to rotate through the coupling 202. As the drive roller 203 rotates, the cylindrical protrusion inside the slide groove 204 installed in the drive roller 203 drives the slide head 221 to move up and down along the guide seat 212.

[0054] When the slider 221 moves from top to bottom to near the lower end of the drive roller 203, the slider 223 installed on the outer end face of the snap connector 222 connects with the turning part 214, causing the slider 223 to slide along the turning part 214 and drive the snap connector 222 to rotate along the center line of the rotating shaft connected to the slider 221. This causes the snap connector 222 to drive the comb assembly to gradually rotate from a horizontal state to a vertical state. At this time, the comb assembly and the fiber bundle to be tested gradually separate from the contact state.

[0055] When the comb assembly is in a vertical position, the cylindrical protrusion inside the groove 204 of the drive roller 203 slides to the bottom of the groove 204. As the drive roller 203 continues to rotate, the cylindrical protrusion begins to move upward from the bottom and drives the slide head 221 and the comb assembly to move upward as a whole.

[0056] When the comb assembly moves up to near the upper end of the drive roller 203, the slide bar 223 installed on the outside of the slide head 221 moves to the uppermost side of the guide groove 213 of the guide seat 212. As the drive roller 203 continues to rotate, the movement of the reversing joint 225 of the reversing member 224 is blocked and gradually extends from the contracted state, pushing out the snap-fit ​​connector 222. This causes the snap-fit ​​connector 222 to drive the comb assembly to gradually rotate from the vertical state to the horizontal state. At this time, the comb assembly re-contacts the fiber bundle to be tested.

[0057] By rotating the adjustment handle 234 of the comb assembly, the double-headed screw 233 can be rotated. The double-headed screw 233 moves the inner housing 235, causing the position of the movable comb teeth 236 installed inside the mounting slot 237 to change. This allows the spacing between the movable comb teeth 236 and the fixed comb teeth 232 to be adjusted, thereby adjusting the density of the comb teeth of the comb assembly. This can be adjusted according to different hair fibers, making it suitable for performance testing of various hair fibers.

[0058] In this embodiment, the clamping mechanism includes a mounting frame 301, inside which symmetrically distributed cylinders 302 are mounted, and the extended ends of the cylinders 302 are connected to clamping plates 303.

[0059] By extending and retracting the cylinder 302, the distance between the two clamping plates 303 can be controlled, thereby achieving the purpose of clamping and loosening.

[0060] In this embodiment, the acquisition module includes a force sensor assembly 401 and a displacement sensor assembly 402. The force sensor assembly 401 is installed between the mounting frame 301 and the body assembly 1, and the displacement sensor assembly 402 is installed on the slider 221 of the connecting assembly.

[0061] In this embodiment, the analysis module includes a signal receiving unit, a processing unit, and an output unit. The signal receiving unit is used to receive the detection signals from the force sensor assembly 401 and the displacement sensor assembly 402. The processing unit is used to analyze the received sensor detection values ​​and obtain the analysis results. The output unit is used to output the analysis results from the processing unit.

[0062] In this embodiment, the analysis module further includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the function of claim 4.

[0063] A method for testing the performance of shape memory hair fibers includes the following steps:

[0064] Step 1: Take several fiber samples to be tested, arrange them into fiber bundles with flat ends, fix the root of the fiber bundle along the direction of the fiber scales, so that the fiber bundle hangs naturally.

[0065] Step 2: Simulate daily combing motions to comb the fiber bundle under test. Using a fixed displacement range as sampling points, detect the load value between the fiber bundle under test and the comb during the combing process, and record the displacement and corresponding load value data of the comb from the start to the end of the combing process.

[0066] Step 3: Repeat step 2 several times to obtain multiple sets of displacement and corresponding load value datasets.

[0067] Step 4: Calculate the variance and standard deviation of the load values ​​detected at each sampling point in the dataset.

[0068] Step 5: Classify the combability of the fiber bundle under test based on the calculated variance and standard deviation values.

[0069] The specific steps for step five are as follows:

[0070] Step 1: Create a sample set using the calculated variance or standard deviation values, denoted as {P1, P2, ..., P3}. m};

[0071] Step two: Obtain the mean and standard deviation of the sample set, and standardize the data using the mean and standard deviation. The standardization formula is: In this formula, z is the standard parameter, σ is the variance of the sample data, and μ is the mean of the sample data;

[0072] Step 3: After standardization is completed, utilize the standard parameters. The numerical range is adjusted to [0,1], and the combinability properties of the fiber bundle under test are classified using the function value of f(k). The classification mechanism is as follows:

[0073] When f(k)min≤f(k)<f(k)1, the combability of the fiber bundle under test is classified as Level 1;

[0074] When f(k)1≤f(k)<f(k)2, the combability of the fiber bundle under test is classified as level two;

[0075] When f(k)2≤f(k)<f(k)max, the combability of the fiber bundle under test is classified into three levels;

[0076] Where f(k)mi n and f(k)max are the minimum and maximum values ​​of the function f(k), respectively, and f(k)1 and f(k)2 are the intermediate values ​​of f(k), respectively.

[0077] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A shape memory hair fiber performance testing system, comprising a body assembly (1), a data acquisition module, a clamping mechanism, a simulation mechanism, and an analysis module, characterized in that: Both the clamping mechanism and the simulation mechanism are installed inside the body assembly (1). The simulation mechanism is used to simulate the daily hair combing behavior. The clamping mechanism is used to clamp and fix the fiber sample to be tested. The acquisition module is installed between the clamping mechanism and the body assembly (1) to acquire the displacement data of the simulation mechanism and the load data between the clamping mechanism and the body assembly (1). The analysis module acquires and analyzes the displacement data and load data, and characterizes the combability performance evaluation value of the fiber sample to be tested through the analysis results. The simulation mechanism includes a drive component, a fixing component, a connecting component, and a combing component. The drive component includes a drive motor (201), which is mounted on the upper end of the body assembly (1). The main shaft of the drive motor (201) is connected to a coupling (202), and the other end of the coupling (202) is connected to a drive roller (203). The outer end face of the drive roller (203) is provided with a through-connected sliding groove (204). The fixing component includes a fixing seat (211), one end of which is connected to the body assembly (1), and the other end is connected to symmetrically distributed guide seats (212). The end face of the guide seat (212) is provided with a through guide groove (213) and a turning part (214) arranged in an arc shape. The inner side of the guide seat (212) is connected to the drive roller (203) through a bearing. The connecting assembly includes a slider (221), one end of which is slidably connected to the drive roller (203) via a cylindrical protrusion, and the other end is connected to a snap-fit ​​connector (222) via a rotating shaft. The outer end faces of the slider (221) and the snap-fit ​​connector (222) are symmetrically provided with sliders (223). The outer side of the slider (223) is rotatably connected to a deflector (224). The deflector (224) includes multiple deflector joints (225), which are connected sequentially, and adjacent deflector joints (225) are rotatably connected. The slider (223) located on the outer end face of the slider (221) slides inside the guide groove (213) of the guide seat (212). The comb assembly includes an outer shell (231), the outer side of which is engaged with a snap-fit ​​connector (222). The outer end face of the outer shell (231) is provided with uniformly distributed fixed comb teeth (232). The inner side of the outer shell (231) is provided with a double-headed screw (233). The end of the double-headed screw (233) is connected to an adjustment handle (234) by a thread. The outer side of the middle part of the double-headed screw (233) is provided with an inner shell (235). The outer end face of the inner shell (235) is provided with uniformly distributed movable comb teeth (236). The outer end face of the outer shell (231) is provided with a mounting groove (237). The movable comb teeth (236) pass through the mounting groove (237) of the outer shell (231) and are staggered with the fixed comb teeth (232).

2. The shape memory hair fiber performance testing system according to claim 1, characterized in that: The clamping mechanism includes a mounting frame (301), inside which symmetrically distributed cylinders (302) are installed, and the extended end of the cylinders (302) is connected to a clamping piece (303).

3. The shape memory hair fiber performance testing system according to claim 1, characterized in that: The acquisition module includes a force sensor assembly (401) and a displacement sensor assembly. The force sensor assembly (401) is installed between the mounting frame (301) and the body assembly (1), and the displacement sensor assembly is installed on the slider (221) of the connecting assembly.

4. The shape memory hair fiber performance testing system according to claim 1, characterized in that: The analysis module includes a signal receiving unit, a processing unit, and an output unit. The signal receiving unit is used to receive the detection signals from the force sensor assembly (401) and the displacement sensor assembly. The processing unit is used to analyze the received sensor detection values ​​and obtain the analysis results. The output unit is used to output the analysis results from the processing unit.

5. The shape memory hair fiber performance testing system according to claim 1, characterized in that: The analysis module also includes a memory, a processor, and a computer program stored in the memory and running on the processor.

6. The shape memory hair fiber performance testing system according to claim 1, characterized in that: The testing method for the testing system includes the following steps: Step 1: Take several fiber samples to be tested, arrange them into fiber bundles with flat ends, fix the root of the fiber bundle along the direction of the fiber scales, so that the fiber bundle hangs naturally. Step 2: Simulate daily combing motions to comb the fiber bundle under test. Using a fixed displacement range as sampling points, detect the load value between the fiber bundle under test and the comb during the combing process, and record the displacement and corresponding load value data of the comb from the start to the end of the combing process. Step 3: Repeat step 2 several times to obtain multiple sets of displacement and corresponding load value datasets. Step 4: Calculate the variance and standard deviation of the load values ​​detected at each sampling point in the dataset; Step 5: Classify the combability of the fiber bundle under test based on the calculated variance or standard deviation values.

7. The shape memory hair fiber performance testing system according to claim 6, characterized in that: The specific steps of step five are as follows: Step 1: Create a sample set using the calculated variance or standard deviation values, denoted as {P1, P2, ..., P3}. m }; Step 2: Obtain the mean and standard deviation of the sample set, and standardize the data using the mean and standard deviation. The standardization formula is: In this formula, z is the standard parameter, σ is the standard deviation of the sample data, and μ is the mean of the sample data; Step 3: After standardization is completed, utilize the standard parameters. The numerical range is adjusted to [0,1], and the combinability properties of the fiber bundle under test are classified using the function value of f(k). The classification mechanism is as follows: when At that time, the combability of the fiber bundle under test was classified as Level 1; when At that time, the combability of the fiber bundle under test was classified into two levels; when At that time, the combability of the fiber bundle under test was classified into three levels; Where f(k)min and f(k)max are the minimum and maximum values ​​of the function f(k), respectively, and f(k)1 and f(k)2 are the intermediate values ​​of f(k), with f(k)min < f(k)1 < <f(k)2<f(k)max.

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