Down cluster inclusion tester and testing method

Abstract

The application belongs to the technical field of down package detection, and discloses a down package tester and a testing method. The down package tester comprises a workbench, a supporting assembly, a pressing plate, a first light source emitting element, a second light source emitting element, a first light source receiving element, a second light source receiving element, an image acquisition assembly and a data processing and display assembly. The workbench bears a down package to be tested. The pressing plate can press the down package to be tested to the lowest position. The first light source emitting element and the first light source receiving element and the second light source emitting element and the second light source receiving element are respectively arranged on the four sides of the workbench. The image acquisition assembly is movably arranged on the crossbar between the two supporting frames. The data processing and display assembly, the first light source receiving element, the second light source receiving element and the image acquisition assembly are electrically connected. The application can test the recovery of the down-filled package, comprehensively evaluate the recovery performance of the down package in actual use, and avoid the disadvantages of the single loft test of the down filling material.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of down envelope detection, and particularly relates to a down envelope tester and a testing method. BACKGROUND

[0002] Down envelope is a kind of envelope structure filled with down, which has the characteristics of lightness, warmth, softness, compressibility, etc., and is widely used in clothing, home, outdoor equipment and other fields. Clothing made of down envelope not only can provide good warmth, but also can keep light and comfortable; home products can provide good support and comfortable experience due to their softness, loftiness and good resilience. The structure can use different outer materials (such as nylon, cotton, velvet, etc.) and different down filling methods to meet different scene and use requirements.

[0003] At present, the main measurement for down envelope is the loftiness of down filling material. Although the loftiness of down filling material can preliminarily reflect the resilience of down, the resilience of down envelope is not only dependent on the loftiness of down filling material, but also affected by many factors such as outer material of envelope, sewing process, structure design, etc. with the increase of use time. If only the loftiness of down filling material is tested, the comfort, support, warmth and long-term use performance of the whole envelope after filling cannot be fully reflected. SUMMARY

[0004] The purpose of the present application is to provide a down envelope tester and a testing method, so as to solve the problem in the prior art that the resilience of down envelope filled with down cannot be tested when the resilience of down envelope is tested, the resilience performance of down envelope in actual use is fully evaluated, the disadvantages of relying only on single loftiness test of down filling material are avoided, and the quality of down products and the use experience of consumers are improved.

[0005] To achieve this purpose, the present application adopts the following technical solutions:

[0006] The down envelope tester comprises:

[0007] A workbench, which is rectangular, is used to carry the down envelope to be tested;

[0008] A support assembly, which comprises a support frame and a crossbar, is arranged on opposite sides of the workbench, and the crossbar is arranged between the opposite support frames;

[0009] A pressing plate, which is movably arranged above the workbench, is used to press the down envelope to be tested;

[0010] The first light source emitting member and the first light source receiving member and the second light source emitting member and the second light source receiving member are oppositely arranged on the four sides of the workbench respectively;

[0011] The image acquisition component is arranged on the cross bar in a position-adjustable manner;

[0012] The data processing and display component is electrically connected with the first light source receiving member, the second light source receiving member and the image acquisition component.

[0013] Further, the first light source emitting member and the first light source receiving member are oppositely arranged; the second light source emitting member and the second light source receiving member are oppositely arranged.

[0014] Further, the first light source receiving member and the second light source receiving member each include a receiving screen and a grid data converter, the receiving screen is provided with a grid, and the grid data converter is electrically connected with the data processing and display component.

[0015] Further, each of the grids has a size of 20mm*20mm.

[0016] Further, the image acquisition component includes a driving member and an image acquisition member, the driving member is arranged on the support frame, and an output end of the driving member is connected with the image acquisition member to drive the image acquisition member to move along the cross bar, and the image acquisition member is electrically connected with the data processing and display component.

[0017] Further, the cross bar extends along the length direction of the workbench and is located at the center position in the width direction of the workbench.

[0018] Further, the pressing plate includes a pressing plate body and a counterweight member, the pressing plate body has the same size as the workbench top and is movably arranged above the workbench, and the counterweight member is detachably arranged on the pressing plate body.

[0019] Further, the data processing and display component includes a display and an information processor, the first light source receiving member, the second light source receiving member and the information processor are electrically connected to process the received projection information, and the display, the image acquisition component and the information processor are electrically connected to display the acquired image and the output result of the information processor.

[0020] Further, a center mark point is arranged at the center position of the workbench top.

[0021] The down inclusion test method adopts the down inclusion tester, and comprises the following steps:

[0022] S1: measure the internal length and internal height of the workbench located on one side of the first light source receiving member, and record them as X1 and Y1 respectively; measure the internal length and internal height of the workbench located on one side of the second light source receiving member, and record them as X2 and Y2 respectively;

[0023] S2: place the to-be-tested down inclusion on the workbench, press the to-be-tested down inclusion to the lowest point by using the pressing plate, and then remove the pressing plate; at this time, the data processing and display assembly starts timing and turns on the first light source emitting member and the second light source emitting member to project light sources;

[0024] S3: the first light source receiving member receives the shadow area change projected on the first light source receiving member after the first light source emitting member irradiates to the to-be-tested down inclusion; measure the upper profile change curve of the first projection surface of the to-be-tested down inclusion, and record it as ; measure the lower profile change curve, and record it as ; measure the highest value of the upper profile of the to-be-tested down inclusion on the first projection surface, and record it as Y 1max ; the data processing and display assembly measures the time length for the to-be-tested down inclusion to return to the highest point on the second projection surface, and records it as t1; the first light source receiving member sends the recorded data to the data processing and display assembly;

[0025] The second light source receiving member receives the shadow area change projected on the second light source receiving member after the second light source emitting member irradiates to the to-be-tested down inclusion; measure the upper profile change curve of the second projection surface of the to-be-tested down inclusion, and record it as ; measure the lower profile change curve, and record it as ; measure the highest value of the upper profile of the second projection surface of the to-be-tested down inclusion, and record it as Y 2max ; the data processing and display assembly measures the time length for the to-be-tested down inclusion to return to the highest point on the first projection surface, and records it as t2; the second light source receiving member sends the recorded data to the data processing and display assembly;

[0026] Meanwhile, the image acquisition assembly acquires the image of the morphological change of the to-be-tested down inclusion, and sends it to the data processing and display assembly;

[0027] S4: calculate the recovery rate of the to-be-tested down inclusion: ;

[0028] Calculate the recovery rate of the to-be-tested down inclusion: ;

[0029] S5: repeating the above steps, performing multiple rounds of testing on the to-be-tested down body, averaging the output results, and evaluating the recovery performance of the to-be-tested down body.

[0030] Advantages of the present application:

[0031] The present application provides a down body tester and testing method, including a workbench, a support assembly, a pressing plate, a first light source emitting element, a second light source emitting element, a first light source receiving element, a second light source receiving element, an image acquisition assembly, and a data processing and display assembly. The to-be-tested down body is pressed to the lowest point by the pressing plate, ensuring consistent stress on the to-be-tested down body and avoiding the impact of human operation differences on the test results. The first light source receiving element and the second light source receiving element capture the changes in the projected shadow profile of the to-be-tested down body irradiated by the first light source emitting element and the second light source emitting element, respectively, allowing real-time monitoring of the projected shadow area changes of the down body after compression, recording the changes in the projected shadow area, quantifying the recovery rate and recovery rate of the down body, and both being electrically connected to the data processing and display assembly, allowing the transmission of collected projected shadow area change data to the data processing and display assembly for data processing and calculation of the recovery rate and recovery rate of the down body. The image acquisition assembly records the morphological changes of the down body, allowing intuitive analysis of the structural characteristics of different down bodies for subsequent data analysis and quality evaluation. Therefore, the down body tester can directly test the filled down body and evaluate its recovery performance in actual use, thus better meeting the real experience needs of consumers. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 is the front view of the down body tester in the present application;

[0033] Figure 2 is the right view of the down body tester in the present application;

[0034] Figure 3 is the top view of the down body tester in the present application;

[0035] Figure 4 is a structural schematic view of the first light source receiving element in the present application;

[0036] Figure 5 is a structural schematic view of the pressing plate in the present application;

[0037] Figure 6 is a flowchart of the down body testing method in the present application.

[0038] In the figure:

[0039] 1. Workbench; 2. Support assembly; 21. Support frame; 22. Crossbar; 3. First light source emitter; 4. Second light source emitter; 5. First light source receiver; 6. Second light source receiver; 7. Image acquisition assembly; 8. Pressure plate; 81. Pressure plate body; 82. Counterweight. Detailed Implementation

[0040] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0041] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" 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. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0042] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0043] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0044] Please refer to Figures 1 to 5As shown, the present invention provides a down pack testing instrument and testing method to solve the problem in the prior art that, when conducting resilience testing on down packs, it can perform resilience testing on down packs filled with down, comprehensively evaluate the resilience performance of down packs in actual use, avoid the drawbacks of relying solely on the loft test of down filling material, and improve the quality of down products and the user experience of consumers. The down pack testing instrument includes a worktable 1, a support assembly 2, a pressure plate 8, a first light source emitter 3, a second light source emitter 4, a first light source receiver 5, a second light source receiver 6, an image acquisition assembly 7, and a data processing and display assembly. The worktable 1 is rectangular and is used to support the down pack to be tested. The support assembly 2 includes a support frame 21 and a crossbar 22. The support frames 21 are respectively set on opposite sides of the worktable 1, and the crossbar 22 is set between the opposite support frames 21. The pressure plate 8 is movably set above the worktable 1 and is used to press the down pack to be tested. The first light source emitter 3 and the first light source receiver 5, as well as the second light source emitter 4 and the second light source receiver 6, are respectively set opposite each other on the four sides of the worktable 1. The image acquisition assembly 7 is adjustablely set on the crossbar 22. The data processing and display assembly, the first light source receiver 5, the second light source receiver 6, and the image acquisition assembly 7 are electrically connected.

[0045] By placing the down package to be tested on a rectangular worktable 1, applying downward pressure to the down package using a movable pressure plate 8 to compress it to its lowest point, and then removing the pressure plate 8, a recovery test is performed. This method can more realistically simulate the deformation and recovery process of down products in actual use. A first light source emitter 3 and a first light source receiver 5, as well as a second light source emitter 4 and a second light source receiver 6, are arranged in pairs on the four sides of the worktable 1. The first light source receiver 5 can collect the change in the shadow area projected onto the first light source receiver 5 after the first light source emitter 3 illuminates the down package to be tested; the second light source receiver 6 can collect the change in the shadow area projected onto the second light source receiver 6 after the second light source emitter 4 illuminates the down package to be tested. Furthermore, the first light source receiver 5 and the second light source receiver 6 are electrically connected to a data processing and display component. The system can transmit the collected data on changes in the projected shadow area to the data processing and display component for data processing. Through the first light source emitter 3, the first light source receiver 5, the second light source emitter 4, and the second light source receiver 6, the system can monitor the changes in the projected shadow area of ​​the down package after compression in real time. Utilizing the changes in its shape, the system calculates the change in the projected shadow area, quantifying the recovery rate and recovery speed of the down package. Support frames 21 are provided on both sides of the worktable 1, and a crossbar 22 is positioned between the opposing support frames 21. An image acquisition component 7 is movably mounted on the crossbar 22, capable of acquiring images of the shape changes of the down package under test. The image acquisition component 7 is electrically connected to the data processing and display component, enabling the transmission of the collected images to the data processing and display component for display. This facilitates recording the entire process of the down package under test from compression to recovery, providing dynamic data support and making the experimental results more intuitive and visual. Therefore, the down package tester can directly test the filled down package, evaluating its recovery performance in actual use, thus better meeting the real-world experience needs of consumers.

[0046] To improve the placement accuracy of down packs and ensure test consistency, in some embodiments, a center marker is provided at the center of the workbench 1. This center marker allows for quick and accurate placement of the down pack in the standard position within the test area, avoiding test errors caused by placement misalignment. Furthermore, when repeatedly testing the same down pack or comparing different down packs, inconsistent placement can lead to data deviations. The center marker serves as a reference, improving test repeatability and data reliability.

[0047] like Figures 1 to 3As shown, in order to improve the accuracy of optical measurements, in some embodiments, the first light source emitter 3 and the first light source receiver 5 are positioned directly opposite each other; the second light source emitter 4 and the second light source receiver 6 are positioned directly opposite each other. By arranging the light source emitters and receivers directly opposite each other, the light propagation path is made perpendicular and stable, avoiding light deflection or scattering due to angular deviation, thereby improving the accuracy of the measurement. Furthermore, during the compression and recovery process of the down package under test, its shape change directly affects the shadow area of ​​the light projection on the receiver. The direct alignment ensures the accurate acquisition of projection data, making the test results more reliable.

[0048] like Figure 4 As shown, in order to enhance the analytical capability of the projected shadow area change data, in some embodiments, both the first light source receiver 5 and the second light source receiver 6 include a receiving screen and a grid data converter. The receiving screen is provided with a grid, and the grid data converter is electrically connected to the data processing and display component. The grid on the receiving screen can subdivide the projected shadow into smaller units, which can more accurately capture the morphological changes of the down package under test during compression and recovery, and avoid measurement errors caused by blurred shadow boundaries. In addition, the grid can provide coordinate reference, and the grid data converter can convert the shadow area change into high-precision numerical data, improve the resolution of experimental data, and make the results more detailed and accurate.

[0049] Optionally, the size of each grid can be, but is not limited to, 20 mm × 20 mm, and is not specifically limited here.

[0050] like Figure 3 As shown, in some embodiments, the image acquisition component 7 includes a driver and an image acquisition component. The driver is mounted on the support frame 21, and its output end is connected to the image acquisition component to drive the image acquisition component to move along the crossbar 22. The image acquisition component is electrically connected to the data processing and display component. The image acquisition component can move along the crossbar 22 via the driver to acquire images at different positions, thereby accurately recording the morphological changes of different areas of the down package under test during compression and recovery, avoiding the loss of local information due to fixed acquisition positions. Furthermore, the image acquisition component is precisely controlled by the driver and can move stably along the crossbar 22 according to a set path, unaffected by human operation, ensuring consistent image data acquisition conditions for each test, improving the repeatability of the experiment and the reliability of the data. In addition, the image acquisition component 7 can move along the crossbar 22 to cover a wider area, making it suitable for testing down packages of different sizes and shapes, enhancing the applicability of the equipment.

[0051] Optionally, the image acquisition device may be, but is not limited to, a camera; no specific limitation is made here. The driving device may be, but is not limited to, a direct-drive motor; no specific limitation is made here.

[0052] To ensure that the image acquisition component 7 acquires images at the optimal observation position, in some embodiments, the crossbar 22 extends along the length of the worktable 1 and is located at the center of the width of the worktable 1. When the image acquisition component 7 moves along the crossbar 22, it is always located at the center of the worktable 1, which can evenly cover the entire down package and avoid uneven shooting angles caused by the positional shift of the crossbar 22. This allows the image acquisition component 7 to maintain a symmetrical viewing angle when shooting, avoids image distortion caused by angle shift, and improves the accuracy of the test.

[0053] like Figure 5 As shown, in some embodiments, the pressure plate 8 includes a pressure plate body 81 and a counterweight 82. The pressure plate body 81 has the same dimensions as the workbench 1 and is movably mounted above the workbench 1. The counterweight 82 is detachably mounted on the pressure plate body 81. The pressure plate body 81, with dimensions matching the workbench 1, can cover the entire down package to be tested, ensuring uniform force distribution during compression. Simultaneously, the movable mounting of the pressure plate body 81 allows for flexible movement. Once the pressure plate 8 has pressed the down package to its lowest position, it can be quickly removed, facilitating subsequent testing. The detachable design of the counterweight 82 allows for adjustment of the total weight of the pressure plate 8, enabling flexible adjustment of the applied pressure according to different testing standards or different types of down packages, ensuring that testing conditions meet requirements and improving the versatility of the test. Furthermore, the counterweight 82 can be snap-fitted to or threadedly connected to the pressure plate body 81; no specific limitations are specified here. Optionally, the counterweight 82 may be, but is not limited to, weights, and no specific limitation is made here.

[0054] To visually display test results and facilitate operator observation and adjustment, in some embodiments, the data processing and display component includes a display and an information processor. The first light source receiver 5 and the second light source receiver 6 are electrically connected to the information processor to process the received projection information. The display, image acquisition component 7, and information processor are electrically connected to display the acquired images and the output results of the information processor. The first light source receiver 5 and the second light source receiver 6, electrically connected to the information processor, can quickly calculate the recovery performance of the down package, avoiding manual measurement errors and improving measurement accuracy. The image acquisition component 7 can acquire the morphological information of the down package. The display, electrically connected to the information processor, displays test data in real time. The information processor can directly present the calculation results on the display, allowing testers to view the data directly on the display without manual calculation or additional measurement, improving the convenience and efficiency of the test. The image from the image acquisition component 7 can be displayed on the display in real time, allowing testers to visually observe the state of the down package and determine whether the test is proceeding normally. Furthermore, the test data can be presented in the form of charts, curves, etc., making the test trends clearer and easier to analyze. This facilitates data comparison with test results from different batches, improving the scientific rigor and accuracy of the test.

[0055] Please refer to Figure 6 As shown, the present invention also provides a method for testing down fill volume, using the down fill volume tester in any of the above embodiments, comprising the following steps:

[0056] S1: Measure the internal length and internal height of the worktable 1 located on the side of the first light source receiver 5, and record them as X1 and Y1 respectively; measure the internal length and internal height of the worktable 1 located on the side of the second light source receiver 6, and record them as X2 and Y2 respectively.

[0057] S2: Place the down pack to be tested on the workbench 1, press the down pack to be tested to the lowest point using the pressure plate 8, and then remove the pressure plate 8. At this time, the data processing and display component starts timing and turns on the first light source emitter 3 and the second light source emitter 4 to project the light source.

[0058] S3: The first light source receiver 5 receives the shadow area change projected onto the first light source receiver 5 after the first light source emitter 3 illuminates the down package under test. The upper contour change curve of the first projection surface of the down package under test is measured and recorded. Measure the curve of the lower contour and record it as follows: The highest value of the upper contour of the down pack to be tested on the first projection plane is measured and recorded as Y. 1max The data processing and display component measures the time taken for the down package to return to its highest point on the first projection surface and records it as t1; the first light source receiver 5 sends all the recorded data to the data processing and display component.

[0059] The second light source receiver 6 receives the shadow area change projected onto the second light source receiver 6 after the second light source emitter 4 illuminates the down package under test. The change curve of the upper contour of the second projection surface of the down package under test is measured and recorded. Measure the curve of the lower contour and record it as follows: Measure the highest value of the upper contour of the second projection surface of the down pack to be tested, and record it as Y. 2max The data processing and display component measures the time taken for the down package to return to its highest point on the second projection surface and records it as t2; the second light source receiver 6 sends all the recorded data to the data processing and display component.

[0060] At the same time, the image acquisition component 7 acquires images of the changes in the shape of the down blob under test and sends them to the data processing and display component;

[0061] S4: Calculate the recovery rate of the down packing in the test: ;

[0062] Calculate the recovery rate of the down pack in the test: ;

[0063] S5: Repeat the above steps to conduct multiple rounds of testing on the down pack to be tested, take the average value of the output results, and conduct a reversibility evaluation of the down pack to be tested.

[0064] The down pack testing method involves accurately measuring the initial state by measuring the internal length and height of the workbench 1 on both the first light source receiver 5 and the second light source receiver 6, ensuring consistent initial conditions, reducing environmental errors, and improving data reliability. The pressure plate 8 presses the down pack to its lowest point, ensuring consistent force on all packs and avoiding the influence of human error on test results. The first and second light source receivers 5 and 6 respectively capture the changes in the projected shadow contours of the down pack illuminated by the first and second light source emitters 3 and 4, respectively. This data, combined with the image acquisition component 7, captures the dynamic changes of the down pack, making the test more accurate and traceable. Furthermore, measurements are taken on the same... The upper and lower contour curves and the highest point of a down pack on two different projection planes are measured by dual light sources. This allows for cross-verification of data, ensuring the stability and comprehensiveness of the measurement data, avoiding single measurement errors, and improving data reliability. The image acquisition component 7 records the morphological changes of the down pack, enabling intuitive analysis of the structural characteristics of different down packs for subsequent data analysis and quality assessment. The data processing and display component can calculate the recovery rate and recovery speed of the down pack using formulas, reducing manual intervention, improving testing efficiency, and making the test results more comprehensive. By conducting multiple rounds of testing and taking the average value, the impact of individual test results on the overall evaluation is reduced, improving experimental repeatability and enhancing the reliability and scientific rigor of the data.

[0065] Alternatively, the resilient evaluation method for down packs can follow the following scheme:

[0066] (1) Products with a recovery rate ≥80% and a recovery speed ≥1CM / S are classified as first-class products;

[0067] (2) Grade II products are those with 80% > recovery rate ≥ 60% and 1CM / S > recovery rate ≥ 0.8CM / S.

[0068] (3) Products with a recovery rate of 60% or higher and a recovery rate of ≥40% are considered qualified products; products with a recovery rate of ≥0.6 cm / s and a recovery rate of ≥0.8 cm / s are considered qualified products.

[0069] (4) 40% > recovery rate; 0.6CM / S > recovery rate are unqualified products.

[0070] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A method for testing down fill size, wherein a down fill size tester is used, the down fill size tester comprising: A rectangular workbench (1) is used to support the down package to be tested; a support assembly (2) includes a support frame (21) and a crossbar (22), the support frame (21) being respectively disposed on opposite sides of the workbench (1), and the crossbar (22) being disposed between the opposite support frames (21); a pressure plate (8), the pressure plate (8) being movably disposed above the workbench (1) for pressing the down package to be tested; a first light source emitter (3), a second light source emitter (4), a first light source receiver (5), and a second light source receiver (6). Source receivers (6) are respectively disposed on the four sides of the workbench (1), wherein the first light source emitter (3) and the first light source receiver (5) are disposed opposite to each other, and the second light source emitter (4) and the second light source receiver (6) are disposed opposite to each other; an image acquisition component (7) is disposed on the crossbar (22) in an adjustable position; a data processing and display component is electrically connected to the data processing and display component, the first light source receiver (5), the second light source receiver (6) and the image acquisition component (7); The down pack testing method is characterized by comprising the following steps: S1: Place the down package to be tested on the workbench (1), press the down package to be tested to the lowest point using the pressure plate (8), and then remove the pressure plate (8). At this time, the data processing and display component starts timing and turns on the first light source emitter (3) and the second light source emitter (4) to project light sources. S2: The first light source receiver (5) receives the shadow area change projected onto the first light source receiver (5) after the first light source emitter (3) illuminates the down package to be tested. It measures the upper contour change curve and lower contour change curve of the down package to be tested on the first projection surface, and measures the highest value of the upper contour of the down package to be tested on the first projection surface, and records it as Y. 1max The data processing and display component measures the time taken for the down package to return to its highest point on the first projection surface and records it as t1; the first light source receiver (5) sends all the recorded data to the data processing and display component; The second light source receiver (6) receives the shadow area change projected onto the down package under test after the second light source emitter (4) illuminates it. It measures the upper contour change curve and lower contour change curve of the second projection surface of the down package under test, and measures the highest value of the upper contour of the second projection surface of the down package under test, and records it as Y. 2max The data processing and display component measures the time taken for the down package to return to its highest point on the second projection surface and records it as t2; the second light source receiver (6) sends all the recorded data to the data processing and display component; Meanwhile, the image acquisition component (7) acquires images of the changes in the shape of the down package to be tested and sends them to the data processing and display component; S3: Calculate the recovery rate of the down pack to be tested. Quantify the recovery rate of the down pack by real-time monitoring of the change in the projected shadow area of ​​the down pack after it is compressed. Calculate the recovery rate of the down pack to be tested: ; S4: Repeat the above steps to conduct multiple rounds of testing on the down package to be tested, take the average value of the output results, and conduct a resilient evaluation of the down package to be tested.

2. The down packing test method according to claim 1, characterized in that, The first light source emitter (3) and the first light source receiver (5) are positioned opposite each other; the second light source emitter (4) and the second light source receiver (6) are positioned opposite each other.

3. The down packing test method according to claim 2, characterized in that, Both the first light source receiver (5) and the second light source receiver (6) include a receiving screen and a grid data converter. The receiving screen is provided with a grid, and the grid data converter is electrically connected to the data processing and display component.

4. The down pack testing method according to claim 3, characterized in that, Each of the grids is 20 mm × 20 mm in size.

5. The method for testing down filler body according to claim 1, characterized in that, The image acquisition component (7) includes a driver and an image acquisition component. The driver is mounted on the support frame (21), and the output end of the driver is connected to the image acquisition component to drive the image acquisition component to move along the crossbar (22). The image acquisition component is electrically connected to the data processing and display component.

6. The down pack testing method according to claim 5, characterized in that, The crossbar (22) extends along the length of the worktable (1) and is located at the center of the width of the worktable (1).

7. The method for testing down filler according to claim 1, characterized in that, The pressure plate (8) includes a pressure plate body (81) and a counterweight (82). The pressure plate body (81) has the same dimensions as the workbench (1) and is movably mounted above the workbench (1). The counterweight (82) is detachably mounted on the pressure plate body (81).

8. The method for testing down filler according to any one of claims 1-7, characterized in that, The data processing and display component includes a display and an information processor. The first light source receiver (5) and the second light source receiver (6) are electrically connected to the information processor and are used to process the received projection information. The display, the image acquisition component (7), and the information processor are electrically connected and are used to display the acquired image and the output result of the information processor.

9. The method for testing down filler according to any one of claims 1-7, characterized in that, A center marker is provided at the center of the workbench (1).

Images