A device for testing the flame retardant properties of a fibre

Abstract

The utility model discloses a kind of flame-retardant performance testing devices of fiber processing, it relates to fiber processing technical field, including flame-retardant box, test box, door and support column, the device is by setting adjusting mechanism and fixed mechanism, solved the low space utilization of fiber finished product in flame-retardant performance testing process and the problem that door is accidentally opened, specifically, adjusting mechanism is by servo motor drive adjusting screw rod, and the stability of adjusting process is guaranteed by connecting plate and guide rod, can be flexibly adjusted according to sample size The spacing between baffle, realize the steady fixation of different size sample, improve test accuracy, fixed mechanism contains L type board, T type block, connecting rod and spring, ensure that door is automatically locked after closing, prevent loosening or mistake opening of door during testing process due to external factors, guarantee test continuity and security, furthermore, test component overall structure is convenient to operate, effectively improve test efficiency and data reliability.

Description

Technical Field

[0001] This utility model relates to the field of fiber processing technology, specifically to a flame retardant performance testing device for fiber processing. Background Technology

[0002] Fiber processing refers to the process of treating and processing natural or synthetic fibers through physical or chemical methods to produce textiles or other fiber products with certain properties and uses. This process mainly includes multiple steps such as fiber opening, combing, drafting, twisting, spinning, weaving, dyeing, and finishing. The aim is to improve the appearance, feel, strength, and functionality of the fibers to meet the performance requirements of fiber products in different application scenarios. Fiber processing is widely used in textiles, clothing, home furnishings, medical, and industrial fields, and is an important production link connecting raw materials and end products.

[0003] Existing testing equipment generally suffers from problems such as low internal space utilization, insecure sample fixation, and unreliable door locking when dealing with samples of different sizes, which leads to reduced testing efficiency and even affects the repeatability and authenticity of test results. Utility Model Content

[0004] To address the problems mentioned in the background art, the purpose of this utility model is to provide a flame retardant performance testing device for fiber processing, which has the advantages of flexible adjustment and reliable fixation, and solves the problems of low space utilization and easy opening of the box door.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a flame retardant performance testing device for fiber processing, wherein the testing components include a flame retardant box, a test box, a box door, and a support column, the lower end of the flame retardant box is fixedly connected to the upper end of the test box, the inner wall of the test box is rotatably connected to the surface of the box door via a rotating shaft, and the lower end of the test box is fixedly connected to the upper end of the support column;

[0006] The test chamber is equipped with adjustment mechanisms on both sides and a fixing mechanism on the surface of the chamber door. The adjustment mechanisms are used to adjust the spacing between the barrier plates, and the fixing mechanism is used to fix the chamber door.

[0007] In a preferred embodiment of this invention, the adjustment mechanism includes a servo motor, an adjustment screw, a connecting plate, a guide rod, a fixing plate, a protective cover, and a guide shaft. The output end of the servo motor is fixedly connected to the surface of the adjustment screw, the surface of the adjustment screw is rotatably connected to the inner wall of the connecting plate, the inner wall of the connecting plate is fixedly connected to the surface of the guide rod, the surface of the guide rod is slidably connected to the inner wall of the fixing plate, the surface of the fixing plate is in contact with the inner wall of the protective cover, and the surface of the fixing plate is fixedly connected to the surface of the guide shaft.

[0008] In a preferred embodiment of this invention, the surface of the adjusting screw is threadedly connected to the inner wall of the fixing plate, the surface of the adjusting screw is rotatably connected to the inner wall of the protective cover, the surface of the guide rod is fixedly connected to the inner wall of the protective cover, the surface of the fixing plate is slidably connected to the inner wall of the protective cover via a sliding groove, and the surface of the protective cover is fixedly connected to the surface of the test chamber.

[0009] As a preferred embodiment of this utility model, the surface of the adjustment mechanism is provided with a mating mechanism, which includes a stroke rod, a baffle plate, a mating rod and a protective sleeve. The surface of the stroke rod is slidably connected to the inner wall of the baffle plate, the inner wall of the baffle plate is slidably connected to the surface of the mating rod, and both ends of the mating rod are fixedly connected to the inner wall of the protective sleeve.

[0010] In a preferred embodiment of this invention, the two ends of the stroke rod are fixedly connected to the inner wall of the protective cover, the surface of the protective sleeve is fixedly connected to the surface of the test chamber, the surface of the barrier plate is slidably connected to the inner wall of the test chamber through a sliding groove, and the inner wall of the stroke rod is in contact with the surface of the guide shaft.

[0011] In a preferred embodiment of this utility model, the fixing mechanism includes an L-shaped plate, a T-shaped block, a connecting rod, and a spring. The inner wall of the L-shaped plate is in contact with the surface of the T-shaped block, the surface of the T-shaped block is fixedly connected to the surface of the connecting rod, and a spring is sleeved on the surface of the connecting rod.

[0012] In a preferred embodiment of this invention, the surface of the L-shaped plate is fixedly connected to the surface of the box door, the surface of the connecting rod is fixedly connected to the inner wall of the test box, the two ends of the spring are fixedly connected to the surface of the T-shaped block and the inner wall of the test box respectively, the surface of the T-shaped block is slidably connected to the inner wall of the test box through a sliding groove, and the surface of the L-shaped plate is in contact with the surface of the test box.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model solves the problems of low space utilization and accidental opening of the chamber door during the testing process by setting up an adjustment mechanism and a fixing mechanism, thereby improving the stability of the test and the convenience of operation.

[0015] 2. This utility model, by setting an adjustment mechanism including a servo motor, an adjustment screw, a stroke rod, and a barrier plate, can flexibly adjust the spacing of the barrier plates according to the size of the finished fiber product, solving the problems of unstable fixation and wasted space caused by differences in sample size, and improving the adaptability of the equipment and the accuracy of testing.

[0016] 3. This utility model, by setting a fixing mechanism including an L-shaped plate, a T-shaped block, a connecting rod and a spring, automatically locks the box door when it is closed, solving the problem of test interruption caused by loose or accidentally touched box door during the test process, and improving the safety and reliability of the test process. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main three-dimensional structure provided in an embodiment of the present utility model;

[0018] Figure 2 This is a three-dimensional structural diagram of the adjustment mechanism provided in an embodiment of the present utility model;

[0019] Figure 3 This is a three-dimensional structural diagram of the mating mechanism provided in an embodiment of the present utility model;

[0020] Figure 4 This is a schematic diagram of the three-dimensional structure of the main body in vertical cross-section provided in this embodiment of the utility model.

[0021] In the diagram: 1. Test component; 101. Flame retardant box; 102. Test chamber; 103. Box door; 104. Support column; 2. Adjustment mechanism; 201. Servo motor; 202. Adjustment screw; 203. Connecting plate; 204. Guide rod; 205. Fixing plate; 206. Protective cover; 207. Guide shaft; 3. Coupling mechanism; 301. Stroke rod; 302. Barrier plate; 303. Coupling rod; 304. Protective sleeve; 4. Fixing mechanism; 401. L-shaped plate; 402. T-shaped block; 403. Connecting rod; 404. Spring. Detailed Implementation

[0022] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0023] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0024] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0025] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0026] Example 1

[0027] Reference Figure 1-4 The first embodiment of this utility model provides a test component 1 including a flame-retardant box 101, a test box 102, a box door 103, and a support column 104. The lower end of the flame-retardant box 101 is fixedly connected to the upper end of the test box 102. The inner wall of the test box 102 is rotatably connected to the surface of the box door 103 via a rotating shaft. The lower end of the test box 102 is fixedly connected to the upper end of the support column 104. Adjustment mechanisms 2 are provided on both sides of the test box 102, and a fixing mechanism 4 is provided on the surface of the box door 103. The adjustment mechanism 2 is used to adjust the spacing between the barrier plates 302, and the fixing mechanism 4 is used to fix the box door 103.

[0028] Specifically, the test assembly 1, through the structure of the flame-retardant box 101, test box 102, box door 103 and support column 104, combined with the synergistic effect of the adjustment mechanism 2 and the fixing mechanism 4, solves the problems of low space utilization, inconvenient operation and accidental opening of the box door 103 affecting the test accuracy caused by sample size differences during the flame-retardant test of fiber processed products. The adjustment mechanism 2 can flexibly adjust the spacing of the barrier plates 302 according to the sample size, improving the adaptability of the equipment; the fixing mechanism 4 ensures the stable closure of the box door 103 during the test, preventing accidental opening that could interrupt the test.

[0029] Furthermore, before conducting flame retardant performance tests on the finished fiber products, the test chamber 102 must be opened first. The chamber door 103 of the test chamber 102 is fixed by a limiting structure. The spacing between the barrier plates 302 is adjusted by the adjusting mechanism 2, and then the chamber door 103 is fixed by the fixing mechanism 4. After the above is completed, the flame retardant test can be carried out.

[0030] Example 2

[0031] The second embodiment of this utility model provides an adjustment mechanism 2 including a servo motor 201, an adjusting screw 202, a connecting plate 203, a guide rod 204, a fixing plate 205, a protective cover 206, and a guide shaft 207. The output end of the servo motor 201 is fixedly connected to the surface of the adjusting screw 202. The surface of the adjusting screw 202 is rotatably connected to the inner wall of the connecting plate 203. The inner wall of the connecting plate 203 is fixedly connected to the surface of the guide rod 204. The surface of the guide rod 204 is slidably connected to the inner wall of the fixing plate 205. The surface of the fixing plate 205 contacts the inner wall of the protective cover 206. The surface of the fixing plate 205 is fixedly connected to the surface of the guide shaft 207. The surface of the adjusting screw 202 is threadedly connected to the inner wall of the fixing plate 205. The surface of the adjusting screw 202 is rotatably connected to the inner wall of the protective cover 206. The surface of the guide rod 204 is rotatably connected to the inner wall of the protective cover 206. The inner wall of the protective cover 206 is fixedly connected, and the surface of the fixed plate 205 is slidably connected to the inner wall of the protective cover 206 through a sliding groove. The surface of the protective cover 206 is fixedly connected to the surface of the test chamber 102. The surface of the adjustment mechanism 2 is provided with a mating mechanism 3, which includes a stroke rod 301, a baffle plate 302, a mating rod 303, and a protective sleeve 304. The surface of the stroke rod 301 is slidably connected to the inner wall of the baffle plate 302, and the inner wall of the baffle plate 302 is slidably connected to the surface of the mating rod 303. Both ends of the mating rod 303 are fixedly connected to the inner wall of the protective sleeve 304. Both ends of the stroke rod 301 are fixedly connected to the inner wall of the protective cover 206. The surface of the protective sleeve 304 is fixedly connected to the surface of the test chamber 102. The surface of the baffle plate 302 is slidably connected to the inner wall of the test chamber 102 through a sliding groove. The inner wall of the stroke rod 301 is in contact with the surface of the guide shaft 207.

[0032] Specifically, the adjustment mechanism 2 uses a servo motor 201 to drive the threaded transmission between the adjustment screw 202 and the fixed plate 205. Combined with the guiding structure of the connecting plate 203, guide rod 204, and guide shaft 207, it solves the problems of low space utilization and unstable fixation caused by varying fiber product sizes during testing. Through precise control by the servo motor 201, the spacing of the barrier plates 302 can be flexibly adjusted to adapt to the fixation requirements of samples of different sizes. Simultaneously, after adjustment, the guide shaft 207 and the stroke rod 301 limit each other to reliably lock the position, ensuring the stability of the sample and the accuracy of the test data during testing, thus improving the applicability and ease of operation of the equipment.

[0033] Furthermore, due to the differences in sample size, to improve the utilization of the testing space, adjustment mechanisms 2 are set on both sides of the testing chamber 102. These mechanisms are driven by a servo motor 201, and the output end of the servo motor 201 is fixedly connected to an adjustment screw 202. The adjustment screw 202 and the fixed plate 205 are connected by a threaded engagement. To ensure the stability of the adjustment process, the surface of the adjustment screw 202 is connected to the guide rod 204 through a connecting plate 203. The guide rod 204 is fixed to the protective cover 206. When the servo motor 201 is running, it drives the adjustment screw 202 and the fixed plate 205 to move, causing the guide shaft 207 to disengage from the inner wall of the stroke rod 301. The stroke rod 301 is provided with multiple stroke holes. The two ends of the barrier plate 302 are slidably connected to the stroke rod 301 and the mating rod 303, respectively. The operator can adjust the spacing between the barrier plates 302 according to the sample size, thereby achieving adaptive fixation for samples of different sizes.

[0034] Example 3

[0035] The third embodiment of this utility model provides a fixing mechanism 4 including an L-shaped plate 401, a T-shaped block 402, a connecting rod 403, and a spring 404. The inner wall of the L-shaped plate 401 is in contact with the surface of the T-shaped block 402. The surface of the T-shaped block 402 is fixedly connected to the surface of the connecting rod 403. The spring 404 is sleeved on the surface of the connecting rod 403. The surface of the L-shaped plate 401 is fixedly connected to the surface of the door 103. The surface of the connecting rod 403 is fixedly connected to the inner wall of the test chamber 102. The two ends of the spring 404 are fixedly connected to the surface of the T-shaped block 402 and the inner wall of the test chamber 102, respectively. The surface of the T-shaped block 402 is slidably connected to the inner wall of the test chamber 102 through a sliding groove. The surface of the L-shaped plate 401 is in contact with the surface of the test chamber 102.

[0036] Specifically, the fixing mechanism 4, through the cooperation of the L-shaped plate 401, the T-shaped block 402, the connecting rod 403, and the spring 404, solves the problem of the chamber door 103 being accidentally opened during the test due to external interference or operational errors. When the chamber door 103 is closed, the spring 404 is compressed and undergoes elastic deformation, pushing the T-shaped block 402 to automatically embed into the L-shaped plate 401, thereby reliably locking the chamber door 103 and effectively preventing test interruption or safety hazards. When it is necessary to open the chamber door, the operator can pull the T-shaped block 402 out of the limit through the slide groove to quickly release the locked state, which facilitates the placement and removal of samples and improves the convenience of operation and testing efficiency.

[0037] Furthermore, the operator first pulls the T-block 402 along the groove on the surface of the test chamber 102, causing the T-block 402 to disengage from the limiting position of the L-shaped plate 401, thereby releasing the locked state of the chamber door 103. The chamber door 103 can then be opened smoothly. This structure ensures the stability of the chamber door 103 during the testing process and facilitates the placement of test samples by the operator. After placing the fiber-processed finished product to be tested into the test chamber 102 and adjusting it to the appropriate position, the servo motor 201 is restarted to move the fixing plate 205... The guide shaft 207 is re-embedded into the corresponding slot on the stroke rod 301 to lock the adjusted position and ensure the stability of the sample during the test. Then the chamber door 103 is closed. The inner wall of the chamber door 103 is provided with a connecting rod 403, and a spring 404 is sleeved on its surface. When the chamber door 103 is closed, the L-shaped plate 401 contacts the surface of the test chamber 102. The T-shaped block 402 undergoes elastic deformation due to the compression of the spring 404, which pushes the T-shaped block 402 and embeds it into the L-shaped plate 401, thereby realizing the automatic locking of the chamber door 103.

[0038] Working principle:

[0039] Before testing the flame retardant properties of the finished fiber products, the test chamber 102 must be opened. The door 103 of the test chamber 102 is fixed by a limiting structure. The operator first pulls the T-block 402 along the groove on the surface of the test chamber 102, causing the T-block 402 to disengage from the limiting position of the L-shaped plate 401, thereby releasing the locked state of the door 103. The door 103 can then be opened smoothly. This structure ensures the stability of the door 103 during the testing process and facilitates the placement of test samples by the operator. After the finished product is placed inside the test chamber 102, due to differences in sample size, adjustment mechanisms 2 are installed on both sides of the test chamber 102 to improve the utilization of the test space. These mechanisms are driven by a servo motor 201, with the output end of the servo motor 201 fixedly connected to an adjustment screw 202. The adjustment screw 202 and the fixed plate 205 are connected by a threaded connection. To ensure the smoothness of the adjustment process, the surface of the adjustment screw 202 is connected to a guide rod 204 via a connecting plate 203. The guide rod 204 is fixed to a protective cover 206. When… When the servo motor 201 operates, it drives the adjusting screw 202 and the fixing plate 205 to move, causing the guide shaft 207 to disengage from the inner wall of the stroke rod 301. The stroke rod 301 has multiple stroke holes. The two ends of the baffle plate 302 are slidably connected to the stroke rod 301 and the mating rod 303, respectively. The operator can adjust the spacing between the baffle plates 302 according to the sample size, thereby achieving adaptive fixing for samples of different sizes. After adjusting to the appropriate position, the servo motor 201 is restarted to re-embed the fixing plate 205 and the guide shaft 207. The corresponding slot on the stroke rod 301 is used to lock the adjusted position, ensuring the stability of the sample during the test. Then the chamber door 103 is closed. The inner wall of the chamber door 103 is provided with a connecting rod 403, and a spring 404 is sleeved on its surface. When the chamber door 103 is closed, the L-shaped plate 401 contacts the surface of the test chamber 102. The T-shaped block 402 undergoes elastic deformation due to the compression of the spring 404, causing the T-shaped block 402 to push and embed into the L-shaped plate 401, thereby achieving automatic locking of the chamber door 103. After the above is completed, the flame retardant test can be carried out.

[0040] In summary, by using the limiting cooperation of the T-block and L-plate, the linkage adjustment of the servo motor-driven adjusting screw and stroke rod, and the synergistic effect of the automatic locking structure of the spring and connecting rod, the stable opening and closing of the test chamber door, the flexible adjustment of the internal space, and the safe fixation during the testing process are achieved. This effectively ensures the adaptability, continuity, and operational safety of the fiber-processed finished products during the flame retardant performance testing process.

[0041] The test box, barrier plate, flame-retardant box, spring and flame-retardant box used in the technical means of this application can be additionally equipped with protective measures of common knowledge in the technical field under different usage environments, including but not limited to the following methods, such as protective cover for equipment protection, dustproof net for equipment dust prevention, and sealing or waterproof coating for equipment waterproofing, etc., which are commonly used by those skilled in the art.

[0042] It should be noted that (motor, screw, spring and flame-retardant box) are existing devices or equipment, or devices or equipment that can be implemented by existing technology. The power supply, connection method, usage method, power source, fixing method, installation method, control method, etc. of the equipment, as well as the materials of each accessory and the selection of various parameters are common knowledge to those skilled in the art, and therefore will not be described in detail in this application document.

[0043] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0044] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0045] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0046] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A device for testing the flame retardant properties of a fiber processing, characterized by: A test assembly for the flame retardant properties of fiber processing is provided. The test assembly (1) includes a flame retardant box (101), a test box (102), a box door (103), and a support column (104). The lower end of the flame retardant box (101) is fixedly connected to the upper end of the test box (102). The inner wall of the test box (102) is rotatably connected to the surface of the box door (103) via a rotating shaft. The lower end of the test box (102) is fixedly connected to the upper end of the support column (104). The test box (102) is provided with adjustment mechanisms (2) on both sides, and the box door (103) is provided with fixing mechanisms (4). The adjustment mechanisms (2) are used to adjust the spacing between the barrier plates (302), and the fixing mechanisms (4) are used to fix the box door (103).

2. A device for testing the flame retardant properties of a fibre process according to claim 1, characterised in that: The adjustment mechanism (2) includes a servo motor (201), an adjustment screw (202), a connecting plate (203), a guide rod (204), a fixing plate (205), a protective cover (206), and a guide shaft (207). The output end of the servo motor (201) is fixedly connected to the surface of the adjustment screw (202). The surface of the adjustment screw (202) is rotatably connected to the inner wall of the connecting plate (203). The inner wall of the connecting plate (203) is fixedly connected to the surface of the guide rod (204). The surface of the guide rod (204) is slidably connected to the inner wall of the fixing plate (205). The surface of the fixing plate (205) is in contact with the inner wall of the protective cover (206). The surface of the fixing plate (205) is fixedly connected to the surface of the guide shaft (207).

3. A device for testing the flame retardant properties of a fibre process according to claim 2, characterised in that: The surface of the adjusting screw (202) is threadedly connected to the inner wall of the fixing plate (205), the surface of the adjusting screw (202) is rotatably connected to the inner wall of the protective cover (206), the surface of the guide rod (204) is fixedly connected to the inner wall of the protective cover (206), the surface of the fixing plate (205) is slidably connected to the inner wall of the protective cover (206) through a sliding groove, and the surface of the protective cover (206) is fixedly connected to the surface of the test box (102).

4. A device for testing the flame retardant properties of a fibre process according to claim 2, characterised in that: The adjustment mechanism (2) is provided with a mating mechanism (3) on its surface. The mating mechanism (3) includes a stroke rod (301), a baffle plate (302), a mating rod (303), and a protective sleeve (304). The surface of the stroke rod (301) is slidably connected to the inner wall of the baffle plate (302). The inner wall of the baffle plate (302) is slidably connected to the surface of the mating rod (303). Both ends of the mating rod (303) are fixedly connected to the inner wall of the protective sleeve (304).

5. A device for testing the flame retardant properties of a fibre process according to claim 4, characterised in that: The two ends of the stroke rod (301) are fixedly connected to the inner wall of the protective cover (206), the surface of the protective sleeve (304) is fixedly connected to the surface of the test box (102), the surface of the barrier plate (302) is slidably connected to the inner wall of the test box (102) through a sliding groove, and the inner wall of the stroke rod (301) is in contact with the surface of the guide shaft (207).

6. A device for testing the flame retardant properties of a fibre process according to claim 2, characterised in that: The fixing mechanism (4) includes an L-shaped plate (401), a T-shaped block (402), a connecting rod (403), and a spring (404). The inner wall of the L-shaped plate (401) is in contact with the surface of the T-shaped block (402). The surface of the T-shaped block (402) is fixedly connected to the surface of the connecting rod (403). The spring (404) is sleeved on the surface of the connecting rod (403).

7. A device for testing the flame retardant properties of a fibre process according to claim 6, characterised in that: The surface of the L-shaped plate (401) is fixedly connected to the surface of the box door (103), the surface of the connecting rod (403) is fixedly connected to the inner wall of the test box (102), the two ends of the spring (404) are fixedly connected to the surface of the T-shaped block (402) and the inner wall of the test box (102) respectively, the surface of the T-shaped block (402) is slidably connected to the inner wall of the test box (102) through a sliding groove, and the surface of the L-shaped plate (401) is in contact with the surface of the test box (102).

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