Down feather bag body tester and testing method

Abstract

The invention belongs to the technical field of down feather bag body detection, and discloses a down feather bag body tester and a testing method. The down feather bag body tester comprises a workbench, a supporting assembly, a pressing plate, a first light source emitting part, a second light source emitting part, a first light source receiving part, a second light source receiving part, an image collecting assembly and a data processing and displaying assembly. The working table bears a down feather bag to be detected, the pressing plate can press the down feather bag to be detected to the lowest position, and the first light source emitting part and the first light source receiving part as well as the second light source emitting part and the second light source receiving part are oppositely arranged on the peripheral side surfaces of the working table in pairs respectively; the image acquisition assembly is movably arranged on the cross rod between the supporting frames on the two sides, and the data processing display assembly, the first light source receiving part and the second light source receiving part are electrically connected with the image acquisition assembly. According to the invention, the resilience test can be carried out on the down-filled bag body, the resilience of the down-filled bag body in actual use is comprehensively evaluated, and the disadvantage of single bulkiness test depending on the down filling material is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of down bag detection, and in particular to a down bag tester and a testing method. Background Art

[0002] Down bags are a type of covering structure filled with down. They are lightweight, warm, soft, and compressible, making them widely used in clothing, home furnishings, outdoor equipment, and other fields. Apparel made with down bags not only provides excellent warmth but also remains lightweight and comfortable. Home furnishings, due to their softness, fluffiness, and good resilience, offer excellent support and comfort. This structure can be constructed with a variety of outer materials (such as nylon, cotton, and fleece) and different down filling methods to meet different scenarios and usage needs.

[0003] Currently, down bags primarily measure the bulk of the down filling. While this provides a preliminary indicator of the down's resilience, the down bag's resilience isn't solely dependent on the bulk of the down filling itself. Over time, this resilience is also affected by factors such as the outer material, sewing process, and structural design. Simply testing the bulk of the down filling alone fails to fully reflect the comfort, support, warmth, and long-term performance of the entire bag. Summary of the Invention

[0004] The purpose of the present invention is to provide a down bag tester and testing method to solve the problem in the prior art that, when performing a recovery test on a down bag, the recovery test can be performed on a down bag that has been filled with down, thereby comprehensively evaluating the recovery performance of the down bag in actual use, avoiding the drawback of relying solely on a single fluffiness test of the down filling material, and improving the quality of down products and the consumer experience.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] Down bag tester, including:

[0007] A rectangular workbench for carrying down bags to be tested;

[0008] A support assembly, comprising a support frame and a cross bar, wherein the support frames are respectively arranged on opposite sides of the workbench, and the cross bar is arranged between the opposite support frames;

[0009] A pressing plate, movably disposed above the workbench and used for pressing the down bag to be tested;

[0010] A first light source emitting element, a second light source emitting element, a first light source receiving element, and a second light source receiving element, wherein the first light source emitting element and the first light source receiving element, as well as the second light source emitting element and the second light source receiving element are respectively arranged on the sides of the workbench in pairs and opposite to each other;

[0011] An image acquisition component, the position of which is adjustably arranged on the crossbar;

[0012] A data processing and display component, wherein the data processing and display component, the first light source receiving component, the second light source receiving component and the image acquisition component are electrically connected.

[0013] Furthermore, the first light source emitting element and the first light source receiving element are arranged opposite each other; the second light source emitting element and the second light source receiving element are arranged opposite each other.

[0014] Furthermore, the first light source receiving element and the second light source receiving element 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 to the data processing and display component.

[0015] Furthermore, each of the grids has a size of 20 mm×20 mm.

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

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

[0018] Furthermore, the pressing plate includes a pressing plate body and a counterweight. The pressing plate body has the same size as the workbench surface and is movably disposed above the workbench. The counterweight is detachably disposed on the pressing plate body.

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

[0020] Furthermore, a center marking point is provided at the center position of the workbench surface.

[0021] A down bag testing method, using the down bag testing instrument according to any one of claims 1 to 9, comprises the following steps:

[0022] S1: Measure the inner length and inner height of the workbench on the side of the first light source receiver, and record them as X1 and Y1 respectively; measure the inner length and inner height of the workbench on the side of the second light source receiver, and record them as X2 and Y2 respectively;

[0023] S2: placing the down bag to be tested on the workbench, pressing the down bag to be tested to the lowest point with the pressing plate, and then removing the pressing plate. At this time, the data processing and display component starts timing and turns on the first light emitting element and the second light emitting element to project light;

[0024] S3: The shadow area of the shadow projected onto the first light source receiving element after the first light source emitting element receives the light from the first light source emitting element to the down bag to be tested changes, and the contour change curve of the upper part of the first projection surface of the down bag to be tested is measured and recorded as Measure the lower contour change curve and record it as Measure the highest value of the outline of the down bag to be tested on the upper part of the first projection surface and record it as Y 1max The data processing and display component measures the time it takes for the down bag to return to its highest point on the second projection surface, and records it as t1; the first light source receiving element sends the recorded data to the data processing and display component;

[0025] The second light source receiving element receives the shadow area change projected onto the second light source receiving element after the second light source emitting element irradiates the down bag to be tested, and measures the contour change curve of the upper part of the second projection surface of the down bag to be tested, and records it as Measure the lower contour change curve and record it as Measure the highest value of the upper contour of the second projection surface of the down bag to be tested and record it as Y 2max The data processing and display component measures the time it takes for the down bag to return to its highest point on the first projection surface, and records it as t2; the second light source receiving element sends the recorded data to the data processing and display component;

[0026] At the same time, the image acquisition component acquires images of the shape changes of the down bag to be tested and sends them to the data processing and display component;

[0027] S4: Calculate the recovery rate of the down bag to be tested:

[0028] Calculate the recovery rate of the down bag to be tested:

[0029] S5: Repeat the above steps to perform multiple rounds of testing on the down bag to be tested, average the output results, and evaluate the resilience of the down bag to be tested.

[0030] Beneficial effects of the present invention:

[0031] The present invention provides a down bag tester and a testing method, comprising 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 down bag to be tested is pressed to the lowest point by the pressing plate to ensure that the force applied to the down bag to be tested is consistent, thereby avoiding the influence of human operation differences on the test results; the first light source receiving element and the second light source receiving element respectively capture the contour changes of the projected shadow of the down bag to be tested irradiated by the first light source emitting element and the second light source receiving element, thereby being able to monitor in real time the changes in the projected shadow area of the down bag after being compressed. , record the changes in the projected shadow area, quantify the recovery rate and recovery speed of the down bag, and the two are electrically connected to the data processing and display component, which can transmit the collected projected shadow area change data to the data processing and display component for data processing, and calculate the recovery rate and recovery speed of the down bag; by recording the morphological changes of the down bag through the image acquisition component, the structural characteristics of different down bags can be intuitively analyzed for subsequent data analysis and quality evaluation; therefore, the down bag tester can directly test the filled down bag and evaluate its recovery performance in actual use, so as to better meet the real experience needs of consumers. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a front view of the down bag tester of the present invention;

[0033] Figure 2 This is a right side view of the down bag tester of the present invention;

[0034] Figure 3 is a top view of the down bag tester of the present invention;

[0035] Figure 4 It is a structural schematic diagram of the first light source receiving element in the present invention;

[0036] Figure 5 It is a structural schematic diagram of the pressing plate in the present invention;

[0037] Figure 6 It is a flow chart of the down bag testing method of the present invention.

[0038] In the picture:

[0039] 1. Workbench; 2. Support assembly; 21. Support frame; 22. Crossbar; 3. First light source emitting element; 4. Second light source emitting element; 5. First light source receiving element; 6. Second light source receiving element; 7. Image acquisition assembly; 8. Press plate; 81. Press plate body; 82. Counterweight. DETAILED DESCRIPTION

[0040] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0041] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0042] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0043] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are used to refer to positions or locations based on those shown in the accompanying drawings. These terms are intended solely to facilitate description and simplify operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0044] Please refer to Figures 1 to 5As shown, the present invention provides a down bag tester and testing method to solve the problem in the prior art that when performing a recovery test on a down bag, the down bag can be tested for its recovery, and the recovery performance of the down bag in actual use can be comprehensively evaluated, thereby avoiding the drawback of relying solely on a single fluffiness test of the down filling material, thereby improving the quality of down products and the consumer experience. The down bag tester includes a workbench 1, a support assembly 2, a pressing plate 8, a first light source emitting element 3, a second light source emitting element 4, a first light source receiving element 5, a second light source receiving element 6, an image acquisition assembly 7 and a data processing and display assembly; the workbench 1 is rectangular and is used to carry the down bag to be tested; the support assembly 2 includes a support frame 21 and a cross bar 22, the support frames 21 are respectively arranged on opposite sides of the workbench 1, and the cross bar 22 is arranged between the opposite support frames 21; the pressing plate 8 is movably arranged above the workbench 1 to press the down bag to be tested; the first light source emitting element 3 and the first light source receiving element 5, as well as the second light source emitting element 4 and the second light source receiving element 6, are respectively arranged on the four sides of the workbench 1 in pairs; the image acquisition assembly 7 is adjustably arranged on the cross bar 22; the data processing and display assembly, the first light source receiving element 5, the second light source receiving element 6 and the image acquisition assembly 7 are electrically connected.

[0045] By placing the down bag to be tested on a rectangular workbench 1, applying downward pressure to the down bag to be tested by using a movable pressure plate 8 to compress it to the lowest point, and performing a recovery test after removing the pressure plate 8, the deformation and recovery process of the down product in actual use can be more realistically simulated; a first light source emitting element 3 and a first light source receiving element 5 and a second light source emitting element 4 and a second light source receiving element 6 are arranged on the sides of the workbench 1 in pairs, wherein the first light source receiving element 5 can collect the change in the shadow area projected onto the first light source receiving element 5 after the first light source emitting element 3 irradiates the down bag to be tested; the second light source receiving element 6 can collect the change in the shadow area projected onto the second light source receiving element 6 after the second light source emitting element 4 irradiates the down bag to be tested; and the first light source receiving element 5 and the second light source receiving element 6 are electrically connected to the data processing and display component, and the first light source receiving element 5 and the second light source receiving element 6 can The collected shadow area change data can be transmitted to the data processing and display component for data processing; the shadow area change of the down bag after being compressed can be monitored in real time by the first light source emitting element 3 and the first light source receiving element 5 as well as the second light source emitting element 4 and the second light source receiving element 6. The shadow area change of the down bag after being compressed can be calculated based on the change in its morphology, and the recovery rate and recovery rate of the down bag can be quantified; the workbench 1 is provided with support frames 21 on both sides, and a crossbar 22 is arranged between the opposing support frames 21. The image acquisition component 7 is movably arranged on the crossbar 22 and can capture images of the morphological changes of the down bag to be tested. The image acquisition component 7 is electrically connected to the data processing and display component and can transmit the collected images to the data processing and display component for display, facilitating the recording of the entire process of the down bag from being compressed to recovering, providing dynamic data support and making the experimental results more intuitive and visual. Therefore, the down bag tester can directly test the filled down bag and evaluate its recovery performance in actual use, thereby better meeting the real experience needs of consumers.

[0046] In order to improve the placement accuracy of the down bag and ensure test consistency, in some embodiments, a center marking point is provided at the center of the workbench 1; wherein, through the center marking point, the down bag to be tested can be quickly and accurately placed in the standard position of the test area, avoiding test errors caused by placement offset; and when repeatedly testing the same down bag to be tested or when performing comparative tests on different down bags to be tested, if the placement position is not uniform, it may lead to test data deviation, and the center marking point can be used as a reference to improve the repeatability of the test and the reliability of the data.

[0047] like Figures 1 to 3As shown, in order to improve the accuracy of optical measurement, in some embodiments, the first light source emitting element 3 and the first light source receiving element 5 are arranged in opposite positions; the second light source emitting element 4 and the second light source receiving element 6 are arranged in opposite positions; wherein, by arranging the light source emitting element and the receiving element in opposite positions, the light propagation path is made vertical and stable, avoiding light deflection or scattering due to angle deviation, thereby improving the accuracy of measurement; and during the compression and recovery process of the down bag to be measured, its morphological changes directly affect the shadow area of the light projected on the receiving element, and the opposite arrangement ensures the accurate collection of projection data, making the test results more reliable.

[0048] like Figure 4 As shown, in order to enhance the parsing capability of the projected shadow area change data, in some embodiments, the first light source receiving element 5 and the second light source receiving element 6 both 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; wherein, 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 bag to be tested during the compression and recovery process, and avoid measurement errors caused by blurred shadow boundaries; and the grid can provide a coordinate reference, and the grid data converter can convert the shadow area change into high-precision numerical data, thereby improving the resolution of the experimental data and making the results more detailed and accurate.

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

[0050] like Figure 3 As shown, in some embodiments, the image acquisition component 7 includes a driving member and an image acquisition member, the driving member is provided on the support frame 21, and the output end of the driving member is connected to the image acquisition member to drive the image acquisition member to move along the cross bar 22, and the image acquisition member is electrically connected to the data processing and display component; wherein, the image acquisition member can be moved along the cross bar 22 by the driving member to realize image acquisition at different positions, thereby accurately recording the morphological changes of different areas of the down bag to be tested during the compression and recovery process, avoiding the loss of local information due to the fixed acquisition position, and the image acquisition member is precisely moved and controlled by the driving member, and can move stably along the cross bar 22 according to the set path, without being affected by human operation, ensuring that the image data acquisition conditions of each test are consistent, thereby improving the repeatability of the experiment and the reliability of the data; in addition, the image acquisition component 7 can move along the cross bar 22 to cover a larger range, suitable for testing down bags of different sizes and shapes, and enhancing the applicability of the equipment.

[0051] Optionally, the image acquisition component may be, but is not limited to, a camera, which is not specifically limited herein. The driving component may be, but is not limited to, a direct drive motor, which is not specifically limited herein.

[0052] In order to ensure that the image acquisition component 7 captures images at the optimal observation position, in some embodiments, the cross bar 22 extends along the length direction of the workbench 1 and is located at the center position in the width direction of the workbench 1; wherein, when the image acquisition component 7 moves along the cross bar 22, it is always located at the center position of the workbench 1, and can evenly cover the entire down bag, avoiding uneven shooting angles caused by the position offset of the cross bar 22, so that the image acquisition component 7 can maintain a symmetrical viewing angle when shooting, avoiding image distortion caused by angle offset, and improving the accuracy of the test.

[0053] like Figure 5 As shown, in some embodiments, the pressing plate 8 includes a pressing plate body 81 and a counterweight 82. The pressing plate body 81 is the same size as the workbench 1 and is movably arranged above the workbench 1. The counterweight 82 is detachably arranged on the pressing plate body 81. The pressing plate body 81 is the same size as the workbench 1 and can cover the entire down bag to be tested, so that the down bag is evenly stressed during compression. At the same time, the pressing plate body 81 is movably arranged above the workbench 1 and can be flexibly moved. When the pressing plate 8 presses the down bag to be tested to the lowest position, it can be quickly withdrawn to facilitate the orderly conduct of subsequent tests. The counterweight 82 is detachable and can adjust the total weight of the pressing plate 8. It can flexibly adjust the applied pressure according to different test standards or different types of down bags to ensure that the test conditions meet the requirements and improve the versatility of the test. In addition, the counterweight 82 can be snap-fitted or threaded to the pressing plate body 81, which is not specifically limited here. Optionally, the counterweight 82 may be, but is not limited to, a weight, which is not specifically limited here.

[0054] To intuitively display test results and facilitate operator observation and adjustment, in some embodiments, a data processing and display assembly includes a display and an information processor. The first and second light source receivers 5 and 6 are electrically connected to the information processor for processing received projection information. The display, image acquisition assembly 7, and the information processor are electrically connected to display the captured images and the output results of the information processor. The first and second light source receivers 5 and 6 are electrically connected to the information processor to quickly calculate the recovery performance of the down bag, avoid manual measurement errors, and improve measurement accuracy. The image acquisition assembly 7 can obtain morphological information of the down bag. The display is electrically connected to the information processor to display test data in real time. The information processor can directly present the calculated results on the display, allowing testers to view the data directly on the display without manual calculations or additional measurements, thereby improving the convenience and efficiency of the test. The image of the image acquisition assembly 7 can be displayed in real time on the display, allowing testers to intuitively observe the status of the down bag and determine whether the test is proceeding normally. The test data can also 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 of different batches, improving the scientific nature and accuracy of the test.

[0055] Please refer to Figure 6 As shown, the present invention also provides a down bag testing method, which uses the down bag testing instrument in any of the above embodiments, including the following steps:

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

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

[0058] S3: The shadow area of the down bag to be tested projected onto the first light source receiving element 5 after the first light source emitting element 3 receives the light, and the contour change curve of the upper part of the first projection surface of the down bag to be tested is measured and recorded as Measure the lower contour change curve and record it as Measure the highest value of the down bag's upper contour on the first projection surface and record it as Y 1max The data processing and display component measures the time it takes for the down bag to return to its highest point on the first projection surface, and records it as t1; the first light source receiving element 5 sends the recorded data to the data processing and display component;

[0059] The second light source receiving element 6 receives the shadow area change projected onto the second light source receiving element 6 after the second light source emitting element 4 irradiates the down bag to be tested, and measures the contour change curve of the upper part of the second projection surface of the down bag to be tested, and records it as Measure the lower contour change curve and record it as Measure the highest value of the upper contour of the second projection surface of the down bag to be tested and record it as Y 2max The data processing and display component measures the time it takes for the down bag to return to its highest point on the second projection surface, and records it as t2; the second light source receiving element 6 sends the recorded data to the data processing and display component;

[0060] At the same time, the image acquisition component 7 collects images of the shape changes of the down bag to be tested and sends them to the data processing and display component;

[0061] S4: Calculate the recovery rate of the down bag to be tested:

[0062] Calculate the recovery rate of the down bag to be tested:

[0063] S5: Repeat the above steps to perform multiple rounds of testing on the down bag to be tested, average the output results, and evaluate the resilience of the down bag to be tested.

[0064] The down bag testing method measures the internal length and internal height of the workbench 1 on one side of the first light source receiving element 5 and the second light source receiving element 6 respectively, accurately measures the initial state, ensures that the test starting conditions are consistent, reduces environmental errors, and improves data reliability; presses the down bag to be tested to the lowest point through the pressing plate 8 to ensure that the force on all down bags to be tested is consistent, and avoids the influence of human operation differences on the test results; captures the changes in the projection shadow contour of the down bag to be tested by the first light source emitting element 3 and the second light source emitting element 4 through the first light source receiving element 5 and the second light source receiving element 6 respectively, and obtains the dynamic changes of the down bag in combination with the image acquisition component 7, so that the test is more accurate and traceable; and measures the same The upper contour curve, lower contour curve and highest point of a down bag on two different projection surfaces can be measured with dual light sources to cross-validate the data, ensuring the stability and comprehensiveness of the measurement data, avoiding single measurement errors and improving data credibility. The image acquisition component 7 records the morphological changes of the down bag, and the structural characteristics of different down bags can be intuitively analyzed for subsequent data analysis and quality assessment. The data processing and display component can calculate the recovery rate and recovery rate of the down bag through formulas, reducing manual intervention, improving test efficiency and making the test results more comprehensive. By conducting multiple rounds of tests and taking the average value, the influence of individual test results on the overall evaluation is reduced, the experimental repeatability is improved, and the reliability and scientific nature of the data are improved.

[0065] Alternatively, the recovery evaluation method of the down bag can follow the following scheme:

[0066] (1) The recovery rate is ≥80%; the recovery rate is ≥1CM / S (centimeter per second) is the first-class product;

[0067] (2) 80%>Recovery rate≥60%; 1CM / S>Recovery rate≥0.8CM / S are second-class products;

[0068] (3) 60%>Recovery rate≥40%; 0.8CM / S>Recovery rate≥0.6CM / S are qualified products;

[0069] (4) Products with a recovery rate greater than 40% or a recovery rate greater than 0.6CM / S are considered unqualified.

[0070] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. Down bag tester, characterized in that: include: A workbench (1), the workbench (1) being rectangular and used for carrying a down bag to be tested; A support assembly (2) comprising a support frame (21) and a cross bar (22), wherein the support frames (21) are respectively arranged on opposite sides of the workbench (1), and the cross bar (22) is arranged between the opposite support frames (21); A pressing plate (8), the pressing plate (8) being movably arranged above the workbench (1) and used for pressing the down bag to be tested; A first light source emitting element (3), a second light source emitting element (4), a first light source receiving element (5) and a second light source receiving element (6), wherein the first light source emitting element (3) and the first light source receiving element (5) as well as the second light source emitting element (4) and the second light source receiving element (6) are respectively arranged on the sides of the workbench (1) in pairs and opposite to each other; An image acquisition component (7), wherein the position of the image acquisition component (7) is adjustable on the crossbar (22); A data processing and display component, wherein the data processing and display component, the first light source receiving component (5), the second light source receiving component (6) and the image acquisition component (7) are electrically connected.

2. The down bag tester according to claim 1, characterized in that: The first light source emitting element (3) and the first light source receiving element (5) are arranged opposite each other; and the second light source emitting element (4) and the second light source receiving element (6) are arranged opposite each other.

3. The down bag tester according to claim 2, characterized in that: The first light source receiving element (5) and the second light source receiving element (6) both comprise a receiving screen and a grid data converter. A grid is provided on the receiving screen, and the grid data converter is electrically connected to the data processing and display component.

4. The down bag tester according to claim 3, characterized in that: Each of the grids has a size of 20 mm x 20 mm.

5. The down bag tester according to claim 1, characterized in that: The image acquisition component (7) comprises a driving component and an image acquisition component, wherein the driving component is arranged on the support frame (21), and the output end of the driving component is connected to the image acquisition component to drive the image acquisition component to move along the crossbar (22), and the image acquisition component is electrically connected to the data processing and display component.

6. The down bag tester according to claim 5, characterized in that: The crossbar (22) extends along the length direction of the workbench (1) and is located at the center position of the width direction of the workbench (1).

7. The down bag tester according to claim 1, characterized in that: The pressing plate (8) comprises a pressing plate body (81) and a counterweight (82); the pressing plate body (81) has the same size as the workbench (1) and is movably arranged above the workbench (1); and the counterweight (82) is detachably arranged on the pressing plate body (81).

8. The down bag tester according to any one of claims 1 to 7, characterized in that: The data processing and display component includes a display and an information processor. The first light source receiving element (5) and the second light source receiving element (6) are electrically connected to the information processor for processing received projection information. The display, the image acquisition component (7) and the information processor are electrically connected for displaying the acquired image and the output result of the information processor.

9. The down bag tester according to any one of claims 1 to 7, characterized in that: A center marking point is provided at the center position of the workbench (1) surface.

10. Down bag testing method, characterized in that: The down bag tester according to any one of claims 1 to 9 is used, comprising the following steps: S1: Measure the inner length and inner height of the workbench (1) on the side of the first light source receiving element (5), and record them as X1 and Y1 respectively; measure the inner length and inner height of the workbench (1) on the side of the second light source receiving element (6), and record them as X2 and Y2 respectively; S2: placing the down bag to be tested on the workbench (1), pressing the down bag to be tested to the lowest point using the pressing plate (8), and then removing the pressing plate (8), at which time the data processing and display component starts timing and turns on the first light emitting element (3) and the second light emitting element (4) to project light; S3: The first light source receiving element (5) receives the shadow area change of the first light source emitting element (3) projected onto the down bag to be tested, and measures the contour change curve of the upper part of the first projection surface of the down bag to be tested, and records it as Measure the lower contour change curve and record it as Measure the highest value of the outline of the down bag to be tested on the upper part of the first projection surface and record it as Y 1max The data processing and display component measures the time taken for the down bag to be tested on the second projection surface to return to the highest point, and records it as t1; the first light source receiving element (5) sends all recorded data to the data processing and display component; The second light source receiving element (6) receives the shadow area change projected onto the second light source receiving element (6) after the second light source emitting element (4) irradiates the down bag to be tested, and measures the contour change curve of the upper part of the second projection surface of the down bag to be tested, and records it as Measure the lower contour change curve and record it as Measure the highest value of the upper contour of the second projection surface of the down bag to be tested and record it as Y 2max The data processing and display component measures the time taken for the down bag to be tested on the first projection surface to return to the highest point, and records it as t2; the second light source receiving element (6) sends all recorded data to the data processing and display component; At the same time, the image acquisition component (7) acquires images of the morphological changes of the down bag to be tested and sends them to the data processing and display component; S4: Calculate the recovery rate of the down bag to be tested: Calculate the recovery rate of the down bag to be tested: S5: Repeat the above steps to perform multiple rounds of testing on the down bag to be tested, average the output results, and evaluate the resilience of the down bag to be tested.

Images