Textile fabric anti-ultraviolet performance detector

Abstract

The invention relates to the technical field of fabric performance detection, and discloses a textile fabric anti-ultraviolet performance detector, which comprises a detection table having a working surface and a mounting top surface, and also comprises two shading rings respectively mounted on the working surface and the mounting top surface, the two shading rings are symmetrically designed, and the two shading rings are symmetrically arranged on the working surface and the mounting top surface. Annular cavities are formed in the opposite faces of the two shading rings, annular thin film air bags are installed on the inner ring walls of the two shading rings, and one shading ring can be vertically adjusted in a sliding mode so that the two annular thin film air bags can clamp sample cloth. According to the device, 360-degree annular clamping-mark-free and slippage-free uniform tension loading is achieved through the annular film air bags which are symmetrical up and down and the air pressure closed-loop control unit, annular tension can be applied, and the UV transmittance can be synchronously collected in real time, so that the maximum bearable tension of the fabric on the premise that UPF is qualified is accurately calibrated, the maximum bearable tension can be directly used for setting the upper limit of process tension, and the production efficiency is improved. Therefore, the quality defect after the whole roll of cloth leaves the factory is reduced.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of fabric performance detection, in particular to a textile fabric anti-ultraviolet performance detector. BACKGROUND

[0002] At present, in order to meet special needs, various special functional fabrics have been developed and put into the market, such as anti-UV fabric, moisture-absorbing and sweat-absorbing fabric, breathable fabric, cool fabric and thermal insulation fabric, etc. Among them, the anti-UV fabric is widely used in sun-protecting clothes, sun-protecting hats and outdoor anti-ultraviolet scenes, so its anti-UV property (ultraviolet blocking property) must be repeatedly tested during its manufacturing to ensure that the produced anti-UV fabric can have qualified anti-ultraviolet performance.

[0003] Nowadays, there are mainly two ways to detect the anti-ultraviolet performance of the fabric, one of which is laboratory small sample static testing, that is, the sample is placed in a black box, irradiated by a monochromatic ultraviolet light source, and the transmittance is measured by an integrating sphere or a silicon photocell, so as to calculate the UPF (ultraviolet protection factor);

[0004] And the other is online whole roll continuous testing, that is, in the roll-to-roll conveying process, the UV transmittance is measured while keeping the fabric flat, such as the anti-ultraviolet performance detection device for textile fabric disclosed in Chinese Patent Publication No. CN118961592B, which can effectively reduce the error of the detection result and improve the detection efficiency by setting the light shielding assembly and cooperating the variable rib pressing strip to make the friction force generated between the fabric and the variable rib pressing strip not easy to damage the surface of the fabric, and can continuously detect the anti-ultraviolet performance of the fabric in the light shielding environment without increasing the friction force on the fabric.

[0005] However, the above methods have obvious deficiencies: the static small sample cannot reflect the performance of the fabric under actual stress state, resulting in "laboratory qualified, large goods unqualified"; and the online whole roll testing can cover a large area, but can only give "pass or fail", and cannot give the process core parameter "the maximum tension that the fabric can withstand under the premise of ensuring the UPF qualified", so it is difficult to accurately calibrate the tension setting of the fabric before production, which may lead to quality defects after leaving the factory. SUMMARY

[0006] The purpose of the present application is to provide a textile fabric anti-ultraviolet performance detector to solve at least one of the technical problems existing in the prior art.

[0007] To achieve the above purpose, the present application provides the following technical scheme: a textile fabric anti-ultraviolet performance detector, comprising a detection table, and the detection table has a working surface and a mounting top surface, further comprising:

[0008] Two light shielding rings respectively installed on the working surface and the mounting top surface, the two light shielding rings are symmetrically designed, and the opposite surfaces of the two light shielding rings are provided with annular cavities, the inner ring walls of the two light shielding rings are respectively provided with annular thin film air bags, and one of the light shielding rings can be vertically slidably adjusted, so that the two annular thin film air bags can clamp the sample cloth;

[0009] A gas pressure closed-loop control unit is arranged for controlling the change of the gas pressure in the two annular thin film air bags respectively.

[0010] A UV emitting unit and a UV receiving unit are arranged on the working surface and the mounting top surface, and the UV emitting unit and the UV receiving unit are respectively arranged on the upper and lower sides of the central through holes of the two light shielding rings, and are used for synchronously collecting the ultraviolet transmittance during the change of the tension.

[0011] Optionally, one of the light shielding rings is fixed on the working surface of the detection table, the UV receiving unit is arranged on the working surface in the middle of the central through hole of the light shielding ring, the mounting top surface is fixed with an intermediate column, the other light shielding ring is slidably mounted on the outer wall of the intermediate column through an electric sliding rail, and the UV emitting unit is embeddedly arranged in the inner part of the intermediate column.

[0012] Optionally, the annular thin film air bag comprises a fixed ring and an annular air bag, the fixed ring is fixed on the inner ring wall of the light shielding ring, the cross section of the annular air bag is a hyperbolic surface, the plane of the annular air bag exceeds the plane of the annular cavity of the light shielding ring, the inner parts of the two fixed rings are respectively provided with a gas conveying pipe in communication with the annular air bag, and one end of the gas conveying pipe penetrating out of the light shielding ring is connected with the gas pressure closed-loop control unit.

[0013] Optionally, the inner part of the light shielding ring close to the central through hole is provided with a sandwich cavity, the outer walls of the two light shielding rings are respectively connected with a circulating pipeline in communication with the sandwich cavity, the two circulating pipelines are respectively a water inlet pipe and a water outlet pipe, the inner part of the light shielding ring close to the outer edge is provided with a butt joint pipeline in communication with the sandwich cavity, the inner walls of the butt joint pipelines on the two light shielding rings correspond to each other, the inner wall of one of the butt joint pipelines is provided with a connecting cavity, and a adjusting column with a pointed end is slidably arranged in the connecting cavity, a perforated part is fixed on the end of the adjusting column penetrating into the connecting cavity, a spring is arranged between the perforated part and the inner wall of the connecting cavity, a middle flow channel is arranged in the inner part of the adjusting column, and the middle flow channel extends to the outer wall of the connecting part of the adjusting column and the perforated part, the inner wall of the other butt joint pipeline is provided with a piston block, the piston block is made of elastic material, and a reserved hole is arranged in the center of the piston block.

[0014] Optionally, the outer wall of the adjusting column is provided with a limiting convex, and the outer wall of the light shielding ring is provided with a groove for embedding the limiting convex.

[0015] Optionally, the contact surfaces of the two annular air bags are designed as film rings with convex designs, and the surfaces of the two film rings are etched with anti-skid microteeth by laser.

[0016] Optionally, the film ring is designed as a cross or a single-character convex.

[0017] Optionally, the communication parts of the two circulation pipes and the interlayer cavities are staggered in the vertical direction.

[0018] Optionally, the inner wall of the annular air bag is designed to gradually increase in thickness, with the contact points of the two annular air bags being the thinnest points and gradually increasing in thickness outward.

[0019] Optionally, the sample cloth adopts a square fabric, and the side length of the sample cloth is less than the diameter length of the light shielding ring.

[0020] Compared with the prior art, the beneficial effects of the present application are as follows:

[0021] Firstly, the present application realizes 360° annular uniform tension loading without clamping marks and slippage by using the upper and lower symmetrical annular film air bags and the air pressure closed-loop control unit, can apply annular tension and synchronously collect UV transmittance in real time, thereby accurately calibrating the maximum bearable tension of the fabric under the premise of ensuring UPF qualification, and can be directly used for setting the upper limit of the process tension, thereby reducing the quality defects of the whole roll of fabric after leaving the factory.

[0022] Secondly, the present application forms an automatic communication or closed constant-temperature darkroom by using the built-in interlayer cavity and the butt joint pipe in the light shielding ring, shields the environmental light and maintains a constant detection environment, simultaneously realizes center positioning by using the adjusting column-piston block structure, prevents eccentric expansion, ensures that the light path is always coaxial, and improves the test repeatability and stability.

[0023] Thirdly, the present application can superimpose a 0-5° taper angle stretching on the basis of the annular stretching of the fabric by using differential air pressure adjustment, simulates the “arch / crease” working condition, discovers the risks of flatness qualification and crease failure in advance, prevents slippage by using the laser-etched anti-skid microteeth film ring, further expands the detection capability of horizontal, vertical or bidirectional stretching, and provides an additional safety margin for high-end outdoor, protective and 3D forming products. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a perspective view of the present application;

[0025] Figure 2 is a front view of the present application;

[0026] Figure 3 is a sectional view of the present application along A-A; Figure 2 ​

[0027] Figure 4 For the invention Figure 3 Sectional perspective view of the view angle;

[0028] Figure 5 For the invention Figure 2 Sectional view along B-B in the middle;

[0029] Figure 6 Front sectional view of the invention;

[0030] Figure 7 For the invention Figure 6 Sectional perspective view of the view angle;

[0031] Figure 8 For the invention Figure 7 Enlarged view at C in the middle;

[0032] Figure 9 Sectional view of the annular airbag of the invention and partial enlarged view;

[0033] Figure 10 Exploded perspective view of the light shielding ring and annular airbag of the invention.

[0034] In the figure: 1, detection platform; 2, light shielding ring; 3, middle column; 4, UV emitting unit; 5, fixed ring; 6, annular airbag; 7, film ring; 8, UV receiving unit; 9, gas conveying pipe; 10, interlayer cavity; 11, circulating pipeline; 12, docking pipeline; 13, connecting cavity; 14, adjusting column; 15, perforated part; 16, spring; 17, middle flow channel; 18, piston block; 19, limiting convex; 20, sample cloth. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0036] Please refer to Figures 1 to 10 The present application provides a technical solution: a textile fabric anti-ultraviolet performance detector, comprising a detection platform 1, and the detection platform 1 has a working surface and a mounting top surface, further comprising:

[0037] Two light shielding rings 2 are respectively mounted on the working surface and the mounting top surface, the two light shielding rings 2 are designed symmetrically, the opposite surfaces of the two light shielding rings 2 are both provided with annular cavities, the inner ring walls of the two light shielding rings 2 are both provided with annular film airbags, and one of the two light shielding rings 2 can be vertically adjusted to enable the two annular film airbags to clamp a sample cloth 20;

[0038] A gas pressure closed-loop control unit is used to control the change of gas pressure in the two annular film air bags respectively;

[0039] The UV emitting unit 4 and the UV receiving unit 8 are arranged on the working surface and the mounting surface, and are respectively located on the upper and lower sides of the central through hole of the two light shielding rings 2, and are used to synchronously collect the ultraviolet transmittance during the change of tension.

[0040] When the detector is used, first adjust one of the light shielding rings 2 to separate the two annular film air bags, and then place the sample cloth 20 between the two light shielding rings 2, and pay attention to spread the sample cloth 20, then use the two annular film air bags to preliminarily clamp and fix the sample cloth 20, and the contact surface between the annular film air bag and the sample cloth 20 is approximately tangent, as shown in Figure 9 Then the subsequent process can be carried out;

[0041] However, a calibration curve needs to be established in advance before detection. Specifically, a calibration experiment can be performed using a fabric sample with a known breaking strength. The gas pressure closed-loop control unit increases the internal pressure of the two annular film air bags by injecting gas into them. The two annular film air bags gradually expand outward as the gas pressure increases, thereby synchronously performing annular stretching on the sample. The gas pressure P of the upper and lower annular film air bags is gradually increased (0-0.5 MPa, 0.02 MPa per step); then the universal material testing machine clamps the sample of the same specification, and simultaneously measures the actual annular tension T_actual, thereby obtaining a P-T calibration curve T=k(P)·P·A_eff, wherein:

[0042] K(P) is the elastic coefficient of the film-fabric system (one-time calibration can be reused);

[0043] P is the gas pressure of the upper and lower annular film air bags;

[0044] A_eff is the effective force area;

[0045] In this way, as long as the gas pressure P of the annular film air bag is known in real time, the annular tension T of the sample (sample cloth) can be calculated through the one-time calibration curve. After the calibration curve is established, the sample cloth 20 can be further detected;

[0046] After the sample cloth 20 is placed between the two annular film airbags, the two annular film airbags gradually expand outward as the air pressure increases, thereby synchronously stretching the sample cloth 20 in the circumferential direction (in the case that the air pressure in the two annular film airbags is synchronous and equal), and at the same time, the UV emitting unit 4 and the UV receiving unit 8 can synchronously collect the ultraviolet transmittance of the sample cloth 20, until the maximum tension that the sample cloth 20 of the material can withstand under the premise of ensuring the UPF (ultraviolet protection factor) is qualified is measured.

[0047] Moreover, it is worth mentioning that such a stretching method can allow the sample cloth 20 to be subjected to completely uniform tension in the 360° circumferential direction, thereby eliminating differences in directions, so that the measured T_max (UPF qualified critical tension) is the true circumferential limit of the material, which can be directly used to set the upper limit of the tension in the process sheet, so that the tension setting of the fabric can be accurately calibrated before production, thereby reducing the quality defects of the material cloth after leaving the factory.

[0048] Furthermore, the air pressures in the upper and lower annular film airbags can be controlled to be different by the air pressure closed-loop control unit, i.e., the upper air pressure is larger than the lower air pressure or the upper air pressure is smaller than the lower air pressure, so that the tensions on the upper and lower surfaces of the sample cloth 20 are different, thereby artificially introducing a small conical angle of 0-5° to the sample cloth 20, and further simulating the tension distribution of the fabric in the "arched, wrinkled" state, so that the coupling data of "tension + slight wrinkles" can be obtained, and the risk of "flatness qualified, wrinkling failure" can be found in advance, thereby providing a safety margin for high-end clothing, tents and other scenes requiring three-dimensional shaping.

[0049] In one of the more preferred embodiments, a mounting method of the light shielding ring 2 is provided;

[0050] One of the light shielding rings 2 is fixed on the working surface of the detection table 1, and the UV receiving unit 8 is installed on the working surface in the center through hole of the light shielding ring 2, and the installation top surface is fixed with the middle column 3, and the other light shielding ring 2 is slidably installed on the outer wall of the middle column 3 through the electric sliding rail, and the UV emitting unit 4 is embedded and installed in the inside of the middle column 3.

[0051] For details, please refer to Figure 3 and Figure 4 Through the design of the middle column 3 and the electric sliding rail, the vertical adjustment of the upper light shielding ring 2 can be conveniently controlled, so that the sample cloth 20 can be placed on the lower light shielding ring 2, thereby preventing the sample cloth 20 from shifting, and after the two light shielding rings 2 are close to each other and clamp the sample cloth 20 through the annular film airbags, the UV emitting unit 4 and the UV receiving unit 8 are both in a sealed and dark environment, thereby minimizing the influence of ambient light on the detection results.

[0052] In one of the more preferred embodiments, the annular film air bag comprises a fixed ring 5 and an annular air bag 6, the fixed ring 5 is fixed on the inner ring wall of the light shielding ring 2, the cross section of the annular air bag 6 is a superior arc surface, and the plane of the annular air bag 6 exceeds the plane of the annular cavity of the light shielding ring 2, the inside of the two fixed rings 5 is respectively provided with a gas conveying pipe 9 in communication with the annular air bag 6, and the end of the gas conveying pipe 9 penetrating out of the light shielding ring 2 is connected with the air pressure closed loop control unit.

[0053] Specifically referring to Figure 3 and Figure 9 , the cross section of the annular air bag 6 is a superior arc surface and the plane thereof exceeds the plane of the annular cavity of the light shielding ring 2, so that the sample cloth 20 is only in contact with the annular plane of the annular air bag 6 and is not in contact with the light shielding ring 2, thereby ensuring that the annular uniform tension is applied to the sample cloth 20.

[0054] Moreover, the air pressure closed loop control unit is connected with the two annular air bags 6 through the two gas conveying pipes 9, so that the air pressure changes in the two annular air bags 6 can be controlled respectively.

[0055] And it is worth mentioning that the inner wall of the annular air bag 6 is gradually thickened, and the thinnest point is at the contact point of the two annular air bags 6, and gradually thickens outward, referring to Figure 9 , the point a is the thinnest and the point b is the thickest, so that the expansion direction of the annular air bag 6 extends in the direction as shown by the arrow of Figure 9 , so as to further ensure the uniformity of the applied force.

[0056] In one of the more preferred embodiments, in addition to the main influence of ambient light and tension on the detection result in the detection process, there are also some other influencing factors, such as temperature and humidity factors, in the further embodiment, the detection environment is set to be a constant temperature bin, which can further reduce the influencing factors and improve the accuracy of the detection result, the specific mode is as follows:

[0057] The inner part of the light shielding ring 2 close to the center through hole is provided with a sandwich cavity 10, the outer wall of the two light shielding rings 2 is connected with a circulating pipe 11 in communication with the sandwich cavity 10, the two circulating pipes 11 are respectively water inlet pipe and water outlet pipe, the inner part of the light shielding ring 2 close to the outer edge is provided with a butt joint pipe 12 in communication with the sandwich cavity 10, and the butt joint pipes 12 on the two light shielding rings 2 correspond to each other, the inner wall of one of the butt joint pipes 12 is provided with a connecting cavity 13, and a adjusting column 14 with a pointed end is slidingly installed, the end of the adjusting column 14 extending into the connecting cavity 13 is fixed with a fretwork piece 15, and a spring 16 is installed between the fretwork piece 15 and the inner wall of the connecting cavity 13, the inside of the adjusting column 14 is also provided with a middle flow channel 17, and the middle flow channel 17 extends to the outer wall of the connecting position of the adjusting column 14 and the fretwork piece 15, the inner wall of the other butt joint pipe 12 is installed with a piston block 18, the piston block 18 is made of elastic material and is provided with a reserved hole in the center.

[0058] Referring to Figure 7 and Figure 8 , by opening the interlayer cavity 10 in the light shielding ring 2, the inside can be injected with constant temperature liquid through the circulating pipeline 11, and when the two light shielding rings 2 are in a far away state, the elastic material piston block 18 in the docking pipeline 12 will close the central reserved hole, which can be specifically made of rubber material, so that the corresponding interlayer cavity 10 is in a closed state;

[0059] The adjusting column 14 in the other docking pipeline 12 will extend outward under the elastic force of the spring 16, and the perforated part 15 will move to fit the edge inner wall of the connecting cavity 13, so that the outlet of the middle flow channel 17 on the adjusting column 14 is also closed, so that the upper and lower interlayer cavities 10 are in an independent closed state;

[0060] When the two light shielding rings 2 are close to each other, the adjusting column 14 will be inserted into the corresponding docking pipeline 12, and the tip portion will be inserted into the piston block 18, and the adjusting column 14 will also move reversely and make the outer wall of the docking pipeline 12 move into the connecting cavity 13, so that the docking pipeline 12 connects the interlayer cavities 10 in the upper and lower light shielding rings 2, so that the water inlet pipe and the water outlet pipe form a circulating passage, and a constant temperature space is formed in the central through hole of the light shielding ring 2, thereby achieving the purpose of reducing the influence on the test results.

[0061] Moreover, the corresponding cooperation of the adjusting column 14 and the docking pipeline 12 can also play a central positioning role for the upper and lower light shielding rings 2, so that the two light shielding rings 2 and the two annular air bags 6 are in a coaxial state, so that the two annular air bags 6 can synchronously exert tension on the sample cloth 20, keep the two cavities parallel, prevent single-side over-expansion from causing the sample cloth 20 to be eccentric, and further ensure the accuracy of the results.

[0062] In one of the more preferred embodiments, the outer wall of the adjusting column 14 is provided with a limiting convex 19, and the outer wall of the light shielding ring 2 is provided with a groove for embedding the limiting convex 19.

[0063] Referring to Figure 8 , through the design of the limiting convex 19 and the groove on the light shielding ring 2, the stroke of the adjusting column 14 can be limited, thereby ensuring that the adjusting column 14 can completely pass through the piston block 18 and ensuring the connection of the circulating passage.

[0064] In one of the more preferred embodiments, the contact surfaces of the two annular air bags 6 are designed as a convex film ring 7, and the surfaces of the two film rings 7 are etched with anti-skid microteeth by laser.

[0065] Referring to Figure 9, the thin film ring 7 and the design of the anti-skid micro-tooth thereon, as well as the clamp-free annular tensioning mechanism of the sample cloth 20, can also avoid the deviation of the sample cloth 20 under the action of tension.

[0066] In one of the more preferred embodiments, the thin film ring 7 is provided as a cross-shaped or a single-line-shaped protrusion.

[0067] The thin film ring 7 is provided as a cross-shaped or a single-line-shaped protrusion, so that when the thin film ring 7 exerts a pulling force on the sample cloth 20 with the expansion of the annular air bag 6, it can be converted from 360° overall stretching to horizontal, vertical or horizontal and vertical simultaneous stretching, so as to detect the performance under different tension states.

[0068] In one of the more preferred embodiments, the communication between the two circulating pipes 11 and the interlayer cavity 10 is staggered in the vertical direction with the communication between the docking pipe 12 and the interlayer cavity 10.

[0069] Referring to Figures 7-8 The staggered design of the communication port between the docking pipe 12 and the circulating pipe 11 can avoid the difficulty of liquid flow in the local circulation process, and thus the temperature of each part of the interlayer cavity 10 is the same, providing a basis for the creation of a constant temperature space.

[0070] In one of the more preferred embodiments, the sample cloth 20 is a square fabric, and the side length of the sample cloth 20 is less than the diameter length of the light shielding ring 2, referring to Figure 5 The design of the sample cloth 20 can not only be clamped by the annular air bag 6, but also will not block the light shielding ring 2, thereby facilitating the feeding and positioning work, and also will not affect the connection of the adjusting column 14.

[0071] The standard parts used in this embodiment can be directly purchased from the market, and the non-standard structural parts according to the description and drawings can also be directly processed according to the existing technical knowledge without doubt, and the connection mode of each part adopts the mature conventional means in the existing technology, and the machinery, parts and equipment adopt the conventional models in the existing technology, so specific description is not made here.

[0072] Although embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A kind of textile fabric anti-ultraviolet performance detector, including detection table (1), and the detection table (1) has working surface and installation top surface, it is characterized in that, Also include: Two light shielding rings (2) are respectively installed on the working surface and the mounting top surface, the two light shielding rings (2) are symmetrically designed, the opposite surfaces of the two light shielding rings (2) are respectively provided with annular cavities, the inner ring walls of the two light shielding rings (2) are respectively provided with annular film air bags, and one of the light shielding rings (2) can be vertically slidably adjusted, so that the two annular film air bags can clamp a sample cloth (20); A gas pressure closed-loop control unit is used for controlling the gas pressure changes in the two annular film air bags respectively; A UV emitting unit (4) and a UV receiving unit (8) are arranged on the working surface and the mounting top surface, and the UV emitting unit (4) and the UV receiving unit (8) are respectively arranged on the upper and lower sides of the central through holes of the two light shielding rings (2), and are used for synchronously collecting the ultraviolet transmittance during the tension change.

2. The textile fabric anti-ultraviolet performance detector according to claim 1, characterized in that: One of the light shielding rings (2) is fixed on the working surface of the detection table (1), the UV receiving unit (8) is arranged on the working surface in the middle of the central through hole of the light shielding ring (2), the mounting top surface is fixed with an intermediate column (3), the other light shielding ring (2) is slidably arranged on the outer wall of the intermediate column (3) through an electric sliding rail, and the UV emitting unit (4) is embeddedly arranged in the inner part of the intermediate column (3).

3. The textile fabric anti-ultraviolet performance detector according to claim 1, characterized in that: The annular film air bag comprises a fixed ring (5) and an annular air bag (6), the fixed ring (5) is fixed on the inner ring wall of the light shielding ring (2), the cross section of the annular air bag (6) is a hyperbolic surface, the plane of the annular air bag (6) exceeds the plane of the annular cavity of the light shielding ring (2), the inner parts of the two fixed rings (5) are respectively provided with gas conveying pipes (9) in communication with the annular air bag (6), and the ends of the gas conveying pipes (9) penetrating out of the light shielding ring (2) are connected with the gas pressure closed-loop control unit.

4. The textile fabric anti-ultraviolet performance detector according to claim 1, characterized in that: The inner part of the light shielding ring (2) close to the central through hole is provided with a sandwich cavity (10), the outer walls of the two light shielding rings (2) are respectively connected with circulation pipes (11) in communication with the sandwich cavity (10), the two circulation pipes (11) are respectively water inlet pipes and water outlet pipes, the inner part of the light shielding ring (2) close to the outer edge is provided with a butt joint pipe (12) in communication with the sandwich cavity (10), and the butt joint pipes (12) on the two light shielding rings (2) correspond to each other, the inner wall of one of the butt joint pipes (12) is provided with a connecting cavity (13), and a adjusting column (14) with a pointed end is slidably arranged in the connecting cavity (13), a perforated part (15) is fixed on the end of the adjusting column (14) penetrating into the connecting cavity (13), a spring (16) is arranged between the perforated part (15) and the inner wall of the connecting cavity (13), a middle flow channel (17) is further arranged in the inner part of the adjusting column (14), and the middle flow channel (17) extends to the outer wall of the connecting part of the adjusting column (14) and the perforated part (15), the inner wall of the other butt joint pipe (12) is provided with a piston block (18), the piston block (18) is made of elastic material, and a reserved hole is arranged in the center.

5. The textile fabric anti-ultraviolet performance detector according to claim 4, characterized in that: The outer wall of the adjusting column (14) is provided with a limiting convex (19), and the outer wall of the light shielding ring (2) is provided with a groove for embedding the limiting convex (19).

6. The textile fabric anti-ultraviolet performance detector according to claim 3, characterized in that: The contact surfaces of the two annular air bags (6) are designed as film rings (7) in convex form, and the surfaces of the two film rings (7) are provided with anti-skid microteeth by laser etching.

7. The textile fabric anti-ultraviolet performance detector according to claim 6, characterized in that: The film ring (7) is designed as a cross or a single character convex.

8. The textile fabric anti-ultraviolet performance detector according to claim 4, characterized in that: The communication positions of the two circulation pipes (11) and the interlayer cavities (10) are staggered in the vertical direction with the communication positions of the butt pipes (12) and the interlayer cavities (10).

9. The textile fabric anti-ultraviolet performance detector according to claim 3, characterized in that: The inner walls of the annular air bags (6) are designed to have a gradually changing thickness, and the contact points of the two annular air bags (6) are the thinnest, and gradually thicken outward.

10. The textile fabric anti-ultraviolet performance detector according to any one of claims 1-9, characterized in that: The sample cloth (20) adopts a square fabric, and the side length of the sample cloth (20) is smaller than the diameter length of the light shielding ring (2).

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