A device for detecting the tensile strength of spandex fibers

Abstract

The utility model relates to textile detection technical field and disclose a spandex fiber tensile strength detection device, including base, moving structure, cloth pressing mechanism and pressing plate, moving structure contains motor, gear, rack and limit board, motor drives gear rotation, and gear engages rack and makes two groups of mounting plate synchronous stable movement, cloth pressing mechanism passes through the linkage of connecting plate, mounting block, rotating rod, lever etc, realizes the accurate regulation of sliding rod and pressing plate, and the height of pressing plate can be adjusted by adjusting screw, and the anti -skid block prevents skidding, and the device links through each part, can stable spandex fiber tensile, accurate detection its tensile strength, and the operation is flexible, and adapts to different specifications fiber, guarantees the accurate and reliable detection data, is applicable to spandex fiber tensile property detection.

Description

Technical Field

[0001] This utility model relates to the field of textile testing technology, specifically to a device for testing the tensile strength of spandex fibers. Background Technology

[0002] Spandex fiber tensile strength testing devices are crucial equipment in the textile industry for evaluating material properties. They are widely used in quality inspection at spandex production plants, material analysis at textile research institutions, and quality supervision in related industries. Their core function is to apply controlled tensile force to spandex fibers and measure parameters such as the fiber's strength at break, providing data support for product quality control and material improvement. In practical applications, spandex fiber tensile strength testing devices typically include the following key structures: 1. Base: As the basic support of the device, it provides a stable mounting platform for each testing component, ensuring overall stability during the testing process; 2. Clamping mechanism: Used to firmly clamp both ends of the spandex fiber to prevent the fiber from slipping during stretching and to ensure the accuracy of the test; 3. Tensioning drive system: With motors, lead screws, etc. as the core, it provides power for fiber stretching, realizing precise control of tension and stable stretching process; 4. Detection and data acquisition components: including force sensors, displacement measuring devices, etc., used to monitor the tensile force and fiber elongation during the stretching process in real time, and transmit the data to the processing system; Currently, various technical solutions have been adopted in the industry to test the tensile strength of spandex fibers. Some devices apply tension by manually rotating a knob, while others use simple mechanical clamping to fix the fibers, and still others obtain test data by manually reading pointer scales. However, the above-described implementation still has the following problems: When testing the tensile strength of spandex fibers of different thicknesses, most devices' clamping mechanisms are designed based on a fixed clamping force. Under normal testing conditions, this can ensure a basic clamping effect. However, when the fiber thickness changes, such as when switching between testing fine denier and coarse denier spandex filaments on the same testing equipment, the required clamping force is completely different due to the significant differences in the diameter and surface characteristics of the two types of fibers. When testing coarser coarse denier spandex filaments, a larger clamping force is required to prevent slippage. A fixed clamping force is insufficient to provide a sufficient clamping effect, easily leading to fiber slippage and affecting the accuracy of the test data. Conversely, when testing finer fine denier spandex filaments… Furthermore, excessive clamping force may damage the fibers. This fixed clamping force characteristic makes it difficult to guarantee the reliability of the test results. It requires manual replacement of clamping components of different specifications, which requires stopping the machine during the replacement process. This is cumbersome and increases the auxiliary time for testing. In order to address the above problems, this application proposes a spandex fiber tensile strength testing device with adaptive clamping force. The overall operation is convenient and the replacement time is reduced. Through the collaborative innovation of various components, the accuracy, stability and efficiency of spandex fiber tensile strength testing are achieved, providing a better solution for spandex fiber quality testing. To solve the above problems, we have proposed a spandex fiber tensile strength testing device. Utility Model Content

[0003] To address the shortcomings of existing technologies, this invention provides a spandex fiber tensile strength testing device, which solves the aforementioned problems.

[0004] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a spandex fiber tensile strength testing device, comprising a base, the interior of which is hollowed out and equipped with a movable structure, and a set of sliding grooves are respectively opened on both sides of the top of the base, characterized in that it further comprises: The top two sides of the movable structure each extend through one end of a sliding groove and are respectively provided with a set of mounting plates, and the top of both sets of mounting plates are provided with a cloth pressing mechanism. Each of the two sets of pressing mechanisms has a pressing plate at each of the two sets of mounting plates.

[0005] Preferably, the moving structure includes a motor and gears, a set of gears is rotatably mounted on the top side near the middle of the base, and a motor is fixedly mounted on the side of the base near the gears. The output shaft of the motor is fixedly connected to the gear.

[0006] Preferably, the movable structure further includes a rack and a limiting plate. The rack is slidably installed inside the base near a set of sliding grooves, and the limiting plate is slidably installed on the side of the sliding grooves away from the rack. The rack and the limiting plate are obliquely symmetrically distributed with another set of sliding grooves. The tops of the two sets of racks and the two sets of limiting plates extend out of the top of the slide groove and are fixedly installed together with a set of mounting plates. The gear meshes with two sets of racks.

[0007] Preferably, the pressing mechanism includes a connecting plate, a first mounting block, and a second mounting block, with a connecting plate fixedly installed on one side of the top of each of the two mounting plates; A first mounting block is fixedly installed at the top of each of the two sets of connecting plates, and a second mounting block is fixedly installed at the bottom of each of the two sets of connecting plates. The two sets of connecting plates and the first mounting block are vertically distributed, and each has a sliding hole in the middle.

[0008] Preferably, the pressing mechanism further includes a rotating rod, a lever, and a connecting rod. A set of rotating rods is hinged to both ends of the first mounting block, and the other ends of both sets of rotating rods are hinged to the lever. A set of connecting rods is fixedly installed on each side of the lever near the two sets of rotating rods; A fixing pin is fixedly installed between the two sets of connecting rods.

[0009] Preferably, a set of sliding rods is slidably installed in the sliding hole in the middle of the connecting plate and the first mounting block, and the sliding rods are provided with insertion holes on the side near the first mounting block; The retaining pin extends through both ends of the insertion hole in the sliding rod.

[0010] Preferably, an adjusting screw is rotatably mounted on the bottom end of the sliding rod near the first mounting block, and a pressure plate is fixedly mounted on the other end of the adjusting screw; Multiple anti-slip blocks are fixedly installed on the side surface of the pressure plate opposite to the sliding rod.

[0011] Compared with the prior art, this utility model provides a device for testing the tensile strength of spandex fibers, which has the following advantages: 1. This spandex fiber tensile strength testing device features a moving structure with meshing gears and racks, coupled with symmetrically distributed limiting plates, ensuring synchronized and smooth movement of the mounting plate. A motor provides stable power, ensuring uniform stretching and improving testing accuracy. The pressing mechanism achieves flexible lifting and precise positioning of the pressing plate through multi-component linkage. Adjusting screws allow for precise adjustment of the pressing plate height, and anti-slip blocks prevent slippage. It is adaptable to fibers of different specifications. Structurally, the components are vertically distributed and compact, maximizing space utilization. The base design balances weight reduction and stability. Operation is simple; clamping can be completed by operating the lever and adjusting screws. The motor and transmission structure improve testing efficiency, making it suitable for batch testing. Furthermore, the device can adapt to fibers of different thicknesses, with rationally linked and durable components, high reliability, and low maintenance costs. Attached Figure Description

[0012] Figure 1 This is a three-dimensional front view schematic diagram of the present invention; Figure 2 This is a schematic side view of the present invention; Figure 3 This is a side sectional view of the present invention; Figure 4 This is a schematic diagram of the movable structure of this utility model; Figure 5 This is a schematic diagram of the fabric pressing mechanism of this utility model; Figure 6 This is a schematic diagram of the connecting plate of this utility model; Figure 7 This is a schematic diagram of the lever of this utility model; Figure 8 This is a schematic diagram of the pressure plate of this utility model.

[0013] In the diagram: 1. Base; 2. Moving structure; 3. Fabric pressing mechanism; 4. Motor; 5. Gear; 6. Rack; 7. Limiting plate; 8. Mounting plate; 9. Connecting plate; 10. First mounting block; 11. Second mounting block; 12. Rotating rod; 13. Toggle lever; 14. Connecting rod; 15. Sliding rod; 16. Pressure plate; 17. Fixing pin; 18. Anti-slip block; 19. Adjusting screw; 20. Insertion hole. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-8 A tensile strength testing device for spandex fibers includes a base 1, the interior of which is hollowed out and equipped with a movable structure 2, and a set of sliding grooves are respectively opened on both sides of the top of the base 1. The device is characterized by further comprising: The top two sides of the movable structure 2 extend through one end of the slide groove and are respectively provided with a set of mounting plates 8, and the top of both sets of mounting plates 8 are provided with a cloth pressing mechanism 3. Each of the two sets of pressing mechanisms 3 has a pressing plate 16 installed at one of the two sets of mounting plates 8.

[0016] Furthermore, the moving structure 2 includes a motor 4 and a gear 5. A set of gears 5 is rotatably mounted on the top side of the base 1 near the middle, and a motor 4 is fixedly mounted on the side of the base 1 near the gears 5. The output shaft of motor 4 is fixedly connected to gear 5. By setting motor 4 and gear 5, when motor 4 is working, its output shaft can drive gear 5 to rotate stably, providing a reliable power source for moving structure 2. This ensures that gear 5 can stably drive the operation of subsequent related components, thus providing a stable power foundation for the movement of mounting plate 8 during the spandex fiber tensile strength test, and ensuring the stability and reliability of power transmission during the test.

[0017] Furthermore, the movable structure 2 also includes a rack 6 and a limiting plate 7. The rack 6 is slidably installed inside the base 1 near a set of sliding grooves, and the limiting plate 7 is slidably installed on the side of the sliding groove away from the rack 6. The rack 6 and the limiting plate 7 are obliquely symmetrically distributed with another set of sliding grooves. The top ends of the two sets of racks 6 and the two sets of limiting plates 7 extend out of the top end of the slide groove, and are respectively fixedly installed together with a set of mounting plates 8; Gear 5 meshes with two sets of racks 6. The moving structure 2 includes racks 6 and limiting plates 7. When gear 5 rotates, it can drive the two sets of racks 6 to slide in opposite directions along the slide groove. At the same time, the limiting plate 7 slides in another set of slide grooves and plays a limiting and guiding role for the mounting plate 8. The obliquely symmetrical distribution design further improves the stability of the mounting plate 8 when it moves, so that the two sets of mounting plates 8 can move closer or further away from each other synchronously and smoothly, thereby realizing the stable stretching operation of spandex fiber and providing a stable structural basis for testing its tensile strength.

[0018] Furthermore, the pressing mechanism 3 includes a connecting plate 9, a first mounting block 10 and a second mounting block 11, and a connecting plate 9 is fixedly installed on one side of the top of each of the two sets of mounting plates 8. A first mounting block 10 is fixedly installed at the top of each of the two sets of connecting plates 9, and a second mounting block 11 is fixedly installed at the bottom of each of the two sets of connecting plates 9. The two sets of connecting plates 9 and the first mounting block 10 are vertically distributed and each has a sliding hole in the middle. The connecting plate 9, the first mounting block 10 and the second mounting block 11 in the pressing mechanism 3 cooperate with each other. The connecting plate 9 is fixedly installed with the first mounting block 10 and the second mounting block 11 respectively. The connecting plate 9 and the first mounting block 10 are vertically distributed and have sliding holes. This structural design provides stable support and reasonable spatial layout for the installation and operation of other components in the pressing mechanism 3, ensuring that the components can work in coordination and laying a solid structural foundation for the pressing plate 16 to realize the pressing function.

[0019] Furthermore, the pressing mechanism 3 also includes a rotating rod 12, a lever 13 and a connecting rod 14. A set of rotating rods 12 are respectively hinged to both ends of the first mounting block 10, and the other ends of the two sets of rotating rods 12 are hinged to the lever 13. A set of connecting rods 14 are fixedly installed on both sides of the lever 13 near the two sets of rotating rods 12; A fixing pin 17 is fixedly installed between the two sets of connecting rods 14. The rotating rod 12, the lever 13 and the connecting rod 14 in the pressing mechanism 3 are hinged to each other. The rotating rod 12 rotates on the first mounting block 10. The linkage of the connecting rod 14 can be realized by the driving of the lever 13. This linkage structure can flexibly transmit power and facilitate the operation of subsequent components by operating the lever 13. This makes it convenient to adjust the position of the pressing plate 16 to meet the pressing requirements of different specifications of spandex fibers and improve the operational flexibility of the device.

[0020] Furthermore, a set of sliding rods 15 are slidably installed in the sliding hole in the middle of the connecting plate 9 and the first mounting block 10, and the sliding rods 15 are provided with insertion holes 20 on the side near the first mounting block 10. The fixing pin 17 extends through both ends of the insertion hole 20 in the sliding rod 15. The sliding rod 15 slides in the sliding holes of the connecting plate 9 and the first mounting block 10. The fixing pin 17 extends through the insertion hole 20 of the sliding rod 15, so that the action of the lever 13 and the connecting rod 14 can be accurately transmitted to the sliding rod 15, driving the sliding rod 15 to slide up and down, thereby realizing the precise adjustment of the position of the sliding rod 15. This ensures that the pressure plate 16 can accurately act on the spandex fiber during the pressing process, improving the accuracy and reliability of the pressing position.

[0021] Furthermore, an adjusting screw 19 is rotatably mounted on the bottom end of the sliding rod 15 near the first mounting block 10, and a pressure plate 16 is fixedly mounted on the other end of the adjusting screw 19. Multiple anti-slip blocks 18 are fixedly installed on the surface of the pressure plate 16 away from the sliding rod 15. The adjusting screw 19 at the bottom of the sliding rod 15 can be rotated and adjusted to precisely adjust the height of the pressure plate 16 to accommodate spandex fibers of different thicknesses, ensuring that the pressure plate 16 exerts appropriate pressure on the spandex fibers. At the same time, the anti-slip blocks 18 on the pressure plate 16 can increase the friction between the pressure plate 16 and the spandex fibers, effectively preventing the spandex fibers from slipping during the tensile test, thus ensuring the accuracy and reliability of the test data.

[0022] Example 1: In the routine testing of spandex fibers in a small textile factory, this device can efficiently complete the testing work. The operator first operates the lever 13, which drives the sliding rod 15 to slide upward through the rotating rod 12, connecting rod 14, and fixing pin 17, causing the pressure plate 16 to rise and place the spandex fiber sample of ordinary thickness to be tested. Then, the lever 13 is operated in the opposite direction to lower the pressure plate 16 to press the sample. The adjusting screw 19 is rotated to adjust the clamping force, and the anti-slip block 18 prevents the sample from slipping. The motor 4 is started, and its output shaft drives the gear 5 to rotate. The gear 5 meshes with the rack 6, causing the two sets of racks 6 to slide in opposite directions along the slide groove. Through the mounting plate 8, the pressing mechanism 3 and the pressure plate 16 are driven to move away from each other, stretching the sample. The tensile strength is measured with the help of the testing equipment. After the test is completed, the motor 4 is stopped, the lever 13 is operated to raise the pressure plate 16, and the sample is removed. The whole process is fast and stable, meeting the routine testing needs of the factory. Example 2: For research institutions studying the tensile properties of spandex fibers of different thicknesses, this device can be precisely adapted. When testing samples of different thicknesses, the operator first operates lever 13 to raise pressure plate 16, places the sample of the corresponding thickness, and adjusts the clamping force of pressure plate 16 with adjusting screw 19 to ensure that samples of different thicknesses receive appropriate pressure. After starting motor 4, gear 5 drives rack 6 to slide, and mounting plate 8 drives pressing cloth mechanism 3 to smoothly stretch the sample with pressure plate 16. Limiting plate 7 ensures stable movement of mounting plate 8. Because the components of the device are precisely linked, it can accurately reflect the performance changes of spandex fibers of different thicknesses during the stretching process, providing reliable data for scientific research. After the test is completed, the sample can be removed according to the conventional procedure.

[0023] Structural Description: 1. Base 1: Its function is to provide a supporting foundation for the entire device. The internal space is used to install the movable structure 2, and the top groove provides a path for the movement of the mounting plate 8. In terms of position, it is the basic component of the device. The movable structure 2 is installed inside it, and there are grooves on both sides of the top. The principle is to support the components through its own structural stability and ensure the overall operation of the device. 2. Moving structure 2: Its function is to drive the mounting plate 8 and the pressing mechanism 3 to move, thereby stretching the spandex fiber; the positional relationship includes the motor 4, gear 5, rack 6 and limiting plate 7, which are installed inside the base 1; the principle is that the motor 4 drives the gear 5 to rotate, the gear 5 meshes with the rack 6 to drive it to slide, and at the same time the limiting plate 7 assists in guiding, so that the mounting plate 8 moves smoothly. 3. Pressing Mechanism 3: Its function is to press and fix the spandex fibers to facilitate tensile testing; it is installed at the top of the mounting plate 8 and includes multiple sub-components; the principle is to adjust the position and pressure of the pressing plate 16 by linking the sub-components to ensure the fiber is stable. 4. Motor 4: Its function is to provide power to the moving structure 2; its position is fixed inside the base 1 near the gear 5, and its output shaft is connected to the gear 5; its principle is that after being powered on, the output shaft rotates, which drives the gear 5 to rotate synchronously. 5. Gear 5: Its function is to transmit the power of motor 4 and drive rack 6 to move; its position is rotatably mounted inside the top of the base 1 near the middle, and it is connected to the output shaft of motor 4 and rack 6; its principle is to convert its own rotation into the linear motion of rack 6 by meshing with rack 6. 6. Rack 6: Its function is to move under the drive of gear 5, thereby moving the mounting plate 8; its position is to slide inside the base 1 near a set of slide grooves, and its top is fixed to the mounting plate 8 and meshes with gear 5; its principle is to slide in a straight line along the slide groove under the meshing action of gear 5. 7. Limiting plate 7: Its function is to limit and guide the movement of the mounting plate 8, thereby improving stability; it is slidably installed on the side of another set of slide grooves away from the rack 6, and is obliquely symmetrically distributed with the rack 6, with its top fixed to the mounting plate 8; its principle is to slide synchronously with the mounting plate 8, restricting its direction of movement and preventing deviation. 8. Mounting plate 8: Its function is to connect the moving structure 2 and the pressing mechanism 3 and transmit the moving power; the pressing mechanism 3 is installed at the top and fixed to the rack 6 and the limiting plate 7 at the bottom; the principle is that the pressing mechanism 3 moves synchronously under the drive of the rack 6 and the limiting plate 7. 9. Connecting plate 9: Its function is to connect the mounting plate 8 with the first and second mounting blocks, and to provide mounting support for other components of the pressing mechanism 3; its position is fixed on one side of the top of the mounting plate 8, and is perpendicular to the first mounting block 10; its principle is to connect the components into a whole through its own structure to ensure linkage. 10. First mounting block 10: Its function is to mount the rotating rod 12 and provide it with a fulcrum for rotation; its position is fixed at the top of the connecting plate 9, and it has a sliding hole in the middle; its principle is to allow the rotating rod 12 to rotate flexibly through the hinge structure, and to achieve adjustment in conjunction with other components. 11. Second mounting block 11: Its function is to assist in fixing the connecting plate 9 and enhance the structural stability of the pressing mechanism 3; its position is fixed at the bottom of the connecting plate 9; its principle is to cooperate with the connecting plate 9 and the mounting plate 8 to improve the overall structural strength. 12. Rotating rod 12: Its function is to transmit the power of the lever 13, thereby driving the connecting rod 14 and the fixing pin 17 to move; its two ends are respectively hinged to the first mounting block 10 and the lever 13; its principle is to convert the swing of the lever 13 into the up and down movement of the fixing pin 17 by rotating itself. 13. Lever 13: Its function is to allow the operator to operate it, which drives the rotating rod 12 and the connecting rod 14 to move together; its position is hinged to the rotating rod 12, and the connecting rod 14 is installed on both sides; its principle is to make it swing by manual operation, thereby driving the movement of other components. 14. Connecting rod 14: Its function is to connect the lever 13 and the fixing pin 17 to transmit power; its position is fixed on both sides of the lever 13, and its two ends are connected to the lever 13 and the fixing pin 17; its principle is to transmit the action of the lever 13 to the fixing pin 17 to realize the transmission of force. 15. Sliding rod 15: Its function is to drive the pressure plate 16 to move up and down to adjust the position of the pressure cloth; it is slidably installed in the sliding hole of the connecting plate 9 and the first mounting block 10, and is connected to the fixing pin 17 through the insertion hole 20; the principle is that under the drive of the fixing pin 17, it slides up and down along the sliding hole to adjust the position of the pressure plate 16. 16. Pressure plate 16: Its function is to directly press the spandex fiber to prevent slippage during stretching; its position is installed at the bottom of the sliding rod 15 by adjusting screw 19, and its surface has anti-slip block 18; the principle is to fix the fiber by its own pressure, and the anti-slip block 18 increases the friction to enhance the fixing effect. 17. Fixing pin 17: Its function is to connect the connecting rod 14 and the sliding rod 15 to transmit the action; its position is fixed between the two sets of connecting rods 14, and it passes through the insertion hole 20 of the sliding rod 15; its principle is that it moves with the connecting rod 14, causing the sliding rod 15 to slide up and down synchronously. 18. Anti-slip block 18: Its function is to increase the friction between the pressure plate 16 and the spandex fiber to prevent the fiber from slipping; its position is fixed on the side of the pressure plate 16 away from the sliding rod 15; the principle is to increase the coefficient of friction by roughening the surface to improve the reliability of fixing. 19. Adjusting screw 19: Its function is to precisely adjust the height of the pressure plate 16 to accommodate fibers of different thicknesses; it is rotatably mounted on the bottom end of the sliding rod 15, and the other end is connected to the pressure plate 16; its principle is to change its relative position with the sliding rod 15 by rotating itself, thereby adjusting the height of the pressure plate 16. 20. Insertion hole 20: Its function is to allow the fixing pin 17 to pass through, so as to connect the sliding rod 15 with the fixing pin 17; its position is on the side of the sliding rod 15 closer to the first mounting block 10; its principle is that through cooperation with the fixing pin 17, the fixing pin 17 can drive the sliding rod 15 to move.

[0024] During the preparation stage, the operator manually operates lever 13 to rotate lever 12, which in turn drives sliding lever 15 to slide upwards in the sliding holes of connecting plate 9 and first mounting block 10 via connecting rod 14 and fixing pin 17, raising pressure plate 16 to prepare for placing spandex fiber sample. After the spandex fiber sample is placed, lever 13 is operated in the opposite direction, causing sliding lever 15 to lower pressure plate 16 and press it onto the sample. Adjusting screw 19 is then rotated to precisely adjust the height of pressure plate 16 to apply appropriate clamping force. Anti-slip slider 18 ensures that the sample will not slip. Entering the tensile testing stage, motor 4 is started. The output shaft of motor 4 drives gear 5 to rotate. Because gear 5 meshes with two sets of racks 6, the two sets of racks 6 slide linearly in opposite directions along the slide groove. The sliding mechanism 6 drives the pressing mechanism 3 to move synchronously via the mounting plate 8, so that the two sets of pressure plates 16 clamp the two ends of the sample and move away from each other synchronously and smoothly. Under the action of tension, the sample is gradually stretched so that relevant equipment can measure its tensile strength and other parameters. After the test is completed, the motor 4 is stopped, and the lever 13 is operated again to raise the pressure plate 16, release the clamping of the sample, and remove the sample to complete one test. In the whole process, the power transmission from the motor 4 to the gear 5 to the rack 6 and the mounting plate 8 ensures the synchronous movement of the pressure plate 16. The linkage from the lever 13 to the rotating rod 12, the connecting rod 14, the fixing pin 17, the sliding rod 15 and then to the pressure plate 16 realizes the flexible lifting and precise positioning of the pressure plate 16. The cooperation between the anti-slip block 18 and the adjusting screw 19 ensures the accuracy of the test data.

[0025] Although embodiments of the present invention 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 to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A spandex fiber tensile strength testing device, comprising a base (1), wherein the interior of the base (1) is hollowed out and a movable structure (2) is provided therein, and a set of sliding grooves are respectively provided on both sides of the top end of the base (1), characterized in that, Also includes: The top two sides of the movable structure (2) are respectively connected to one end of the slide groove and are respectively provided with a set of mounting plates (8), and the top of the two sets of mounting plates (8) are provided with a pressing cloth mechanism (3). Each of the two sets of pressing mechanisms (3) has a pressing plate (16) at the location of the two sets of mounting plates (8).

2. The spandex fiber tensile strength testing device according to claim 1, characterized in that: The moving structure (2) includes a motor (4) and a gear (5). A set of gears (5) is rotatably installed on the top side of the base (1) near the middle, and a motor (4) is fixedly installed on the side of the base (1) near the gear (5). The output shaft of the motor (4) is fixedly connected to the gear (5).

3. The spandex fiber tensile strength testing device according to claim 2, characterized in that: The movable structure (2) also includes a rack (6) and a limiting plate (7). The rack (6) is slidably installed inside the base (1) near a set of sliding grooves, and the limiting plate (7) is slidably installed on the side of the sliding groove away from the rack (6). The rack (6) and the limiting plate (7) are obliquely symmetrically distributed with another set of sliding grooves. The top ends of the two sets of racks (6) and the two sets of limiting plates (7) extend out of the top end of the slide groove, and are fixedly installed together with a set of mounting plates (8); The gear (5) meshes with two sets of racks (6).

4. The spandex fiber tensile strength testing device according to claim 1, characterized in that: The pressing mechanism (3) includes a connecting plate (9), a first mounting block (10) and a second mounting block (11). A set of connecting plates (9) is fixedly installed on one side of the top of each of the two sets of mounting plates (8). A first mounting block (10) is fixedly installed at the top of each of the two sets of connecting plates (9), and a second mounting block (11) is fixedly installed at the bottom of each of the two sets of connecting plates (9). The two sets of connecting plates (9) and the first mounting block (10) are vertically distributed and each has a sliding hole in the middle.

5. The spandex fiber tensile strength testing device according to claim 4, characterized in that: The pressing mechanism (3) further includes a rotating rod (12), a lever (13) and a connecting rod (14). A set of rotating rods (12) are respectively hinged to both ends of the first mounting block (10), and the other ends of the two sets of rotating rods (12) are hinged to the lever (13). A set of connecting rods (14) are fixedly installed on both sides of the lever (13) near the two sets of rotating rods (12). A fixing pin (17) is fixedly installed between the two sets of connecting rods (14).

6. The spandex fiber tensile strength testing device according to claim 5, characterized in that: A set of sliding rods (15) are slidably installed in the sliding holes in the middle of the connecting plate (9) and the first mounting block (10), and the sliding rods (15) have insertion holes (20) on the side near the first mounting block (10). The retaining pin (17) extends through both ends of the insertion hole (20) in the sliding rod (15).

7. The spandex fiber tensile strength testing device according to claim 6, characterized in that: An adjusting screw (19) is rotatably mounted on the bottom end of the sliding rod (15) near the first mounting block (10), and a pressure plate (16) is fixedly mounted on the other end of the adjusting screw (19); multiple anti-slip blocks (18) are fixedly mounted on the surface of the pressure plate (16) away from the sliding rod (15).

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