Chemical fiber fabric elasticity performance detection device

Abstract

This invention discloses a device for testing the elasticity properties of chemical fiber fabrics, belonging to the technical field of fabric testing equipment. The invention includes a testing platform with a hanging mechanism at its top. The hanging mechanism includes a telescopic rod at the top of the testing platform, a movable tube slidably connected to the surface of the telescopic rod, and a connecting shell installed at the bottom of the movable tube. This invention vertically suspends the chemical fiber fabric using the hanging mechanism. Combined with multiple counterweights of increasing weight and a tension gauge in the counterweight mechanism, it achieves adjustable static tension testing. Simultaneously, a rotating disk in the testing mechanism drives a protrusion to intermittently push a push rod, causing the fabric to fall instantaneously under the action of the counterweights, simulating an instantaneous impact condition. This effectively captures elastic deformation and rebound characteristics. Combined with a clamping assembly and a limiting plate structure, it ensures reliable fabric fixation and convenient counterweight switching, solving the testing deviation problem caused by gradual pressure application and fixed tension in existing technologies, and significantly improving the reliability and accuracy of elasticity performance testing.

Description

Technical Field

[0001] This invention belongs to the technical field of fabric testing equipment, and in particular relates to a device for testing the elasticity properties of chemical fiber fabrics. Background Technology

[0002] Chemical fiber fabric, also known as synthetic fiber fabric, is a textile material made from natural or artificially synthesized polymers through a spinning process. It is mainly divided into two categories: one is man-made fibers, such as viscose and acetate fibers, which are mostly recycled from natural cellulose (cotton linters, wood, etc.); the other is synthetic fibers, such as polyester, nylon, acrylic, and spandex, which are derived from petroleum, natural gas, and other chemical raw materials. The core of testing the elasticity of chemical fiber fabrics is to assess their ability to recover after deformation under stress, which directly affects the fit and durability of clothing. The main testing indicators include breaking strength (tensile strength), elongation at break (tensile limit), and, crucially, elastic recovery rate.

[0003] A Chinese patent application (or patent) with publication number CN212459198U discloses a fabric elasticity testing device. The device uses a hydraulic press A to drive the hydraulic rod A to extend and retract, thereby moving the horizontal plate vertically and clamping both ends of the fabric. Then, a hydraulic press B is used to drive the hydraulic rod B to extend and retract, thereby moving the pressure plate vertically and thus realizing the elasticity testing of the fabric.

[0004] However, the above-mentioned device still has the following problems during implementation: When testing fabric, a hydraulic rod is used to stretch the fabric to test its elasticity. However, the tension on the fabric increases gradually, which is significantly different from the instantaneous stress conditions experienced in real-world scenarios such as putting on and taking off clothing or snagging it. Because the loading rate is much lower than the actual stress propagation speed, the elastic deformation response inside the fabric is "smoothed out," making it difficult to capture the stress abrupt changes and rebound characteristics under instantaneous impact. This results in a large deviation between the measured elastic parameters and the actual performance, failing to accurately reflect the fabric's resistance to deformation.

[0005] A Chinese patent application (or patent) with publication number CN215812157U discloses a device for detecting the elasticity of hook and loop fastener fabric. This device features fixing blocks on one end of the lower surface of the second clamping plate and on the first clamping plate. Slots are provided on the other end of the lower surface of the second clamping plate and one end of the upper surface of the first clamping plate. A worm is provided on one side of the worm wheel, and the worm has a reverse self-locking property on the worm wheel. This provides the device with good stability, enabling it to effectively clamp the fabric and prevent loosening or detachment between the fabric ends and the clamping plates, further improving the detection accuracy of the device.

[0006] However, the above-mentioned device still has the following problems during implementation: When pressing the fabric, two sets of clamps are used to fix the two sides of the fabric. Then, the cylinder pushes the push rod to move and squeeze the fabric. However, the pressure applied by the cylinder is often fixed. When testing different fabric materials, the tensile force value to be tested is different, which is difficult to meet the testing requirements.

[0007] To address this issue, we provide a device for testing the elasticity properties of synthetic fiber fabrics. Summary of the Invention

[0008] The purpose of this invention is to provide a device for testing the elasticity of synthetic fiber fabrics. By combining the structure of the hanging mechanism, the counterweight mechanism, and the testing mechanism, this invention solves the problem that existing fabric testing equipment uses a gradual pressure method for tensile testing, which makes it difficult to capture stress changes and rebound characteristics under instantaneous impact.

[0009] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution.

[0010] This invention relates to a device for testing the elasticity of synthetic fiber fabrics, comprising a testing platform, a hanging mechanism on the top of the testing platform, the hanging mechanism including a telescopic rod on the top of the testing platform, a movable tube slidably connected to the surface of the telescopic rod, a connecting shell installed at the bottom of the movable tube, a hanging slot opened inside the connecting shell, and a winding shaft installed inside the hanging slot, for hanging synthetic fiber fabrics; a counterweight mechanism at the bottom of the connecting shell, the counterweight mechanism including an adjusting shell at the bottom of the connecting shell, a vertical rod installed at the bottom of the adjusting shell, a tension gauge installed at the bottom of the vertical rod, a pulling shell installed at the bottom of the tension gauge, a disc at the bottom of the adjusting shell, and a counterweight block on the top of the disc, for adjusting the elastic tension of the synthetic fiber fabrics; and a testing mechanism on the top of the connecting shell, the testing mechanism including a push rod installed on one side of the movable tube, a rotating disk sleeved on the surface of the movable tube, a protrusion on the top of the rotating disk, and a drive assembly on one side of the rotating disk, for testing the elasticity of the synthetic fiber fabrics.

[0011] The present invention is further configured such that the driving assembly includes a driving motor disposed on one side of the rotating disk, a driving rod mounted on the output end of the driving motor, a first gear mounted on the surface of the driving rod, and a gear ring mounted on the surface of the rotating disk.

[0012] The invention is further configured such that one side of the first gear meshes with the gear ring, and the other end of the drive rod is fixedly connected to the disk.

[0013] The invention is further configured such that the detection platform includes a support base movably connected to the surface of the rotating disk, a base installed at the bottom of the support base, a crossbeam installed at the top of the support base, and the top of the telescopic rod is fixedly connected to the crossbeam.

[0014] The present invention is further configured such that the counterweight mechanism includes a hydraulic rod installed on the top of the base, a movable frame installed on the output end of the hydraulic rod, and a clamping assembly disposed on one side of the adjusting shell.

[0015] The present invention is further configured such that the clamping assembly includes a cylinder mounted on one side of the adjusting shell, a push plate mounted on the output end of the cylinder, a rotating shaft movably connected to one side of the adjusting shell, a clamping plate mounted on the surface of the rotating shaft, a second gear mounted on the surface of the rotating shaft, and a toothed plate meshing with one side of the second gear.

[0016] The present invention is further configured such that one side of the push plate is fixedly connected to the toothed plate, and both sides of the adjusting shell are fixedly connected to connecting rods.

[0017] The present invention is further configured such that the counterweight mechanism includes a slot opened on the top of the counterweight block, two sets of fixed rods movably connected inside the pull shell, a third gear installed on the surface of the fixed rods, and a limiting plate installed on the surface of the fixed rods.

[0018] The invention is further configured such that a rotary motor is fixedly connected inside the pull shell, the output end of the rotary motor is fixedly connected to the fixed rod, and two sets of third gears mesh with each other.

[0019] The invention is further configured such that a screw is threadedly connected inside the rotating disk, a knob is installed at the bottom of the screw, and the other end of the screw is movably connected to a protrusion via a bearing.

[0020] The present invention has the following beneficial effects: The present invention vertically suspends the chemical fiber fabric through a hanging mechanism, and with the help of multiple counterweights with increasing weight and a tension gauge in the counterweight mechanism, it realizes adjustable static tension detection. At the same time, the rotating disk in the detection mechanism drives the protrusion to intermittently push the push rod, so that the fabric drops instantly under the action of the counterweight, simulating the instantaneous impact condition, effectively capturing the elastic deformation and rebound characteristics. Combined with the clamping component and the limiting plate structure, it ensures that the fabric is fixed reliably and the counterweight is easy to switch. It solves the detection deviation problem caused by the gradual pressure and tension fixation of the prior art, and significantly improves the reliability and accuracy of elasticity performance detection.

[0021] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0023] Figure 1 This is a three-dimensional view of a device for testing the elasticity properties of synthetic fiber fabrics.

[0024] Figure 2 This is a schematic diagram of the counterweight mechanism in a device for testing the elasticity of synthetic fiber fabrics.

[0025] Figure 3 This is a schematic diagram of the clamping component in a device for testing the elasticity of synthetic fiber fabrics.

[0026] Figure 4 This is a schematic diagram of the hanging mechanism in a device for testing the elasticity of synthetic fiber fabrics.

[0027] Figure 5 This is a schematic diagram of the drive component in a device for testing the elasticity of synthetic fiber fabrics.

[0028] Figure 6 This is a partial cross-sectional view of a rotating disk in a device for testing the elasticity properties of synthetic fiber fabrics.

[0029] Figure 7 This is a cross-sectional view of a counterweight block in a device for testing the elasticity of synthetic fiber fabrics.

[0030] Figure 8 This is a cross-sectional view of the pull shell in a device for testing the elasticity of synthetic fiber fabrics.

[0031] Figure 9 This is a schematic diagram of the clamping plate clamping the chemical fiber fabric in a device for testing the elasticity of chemical fiber fabrics.

[0032] In the attached diagram: 1. Testing platform; 2. Hanging mechanism; 21. Telescopic rod; 22. Moving tube; 23. Connecting shell; 24. Hanging slot; 25. Rewinding shaft; 3. Counterweight mechanism; 31. Adjusting shell; 32. Vertical rod; 33. Tensile gauge; 34. Pulling shell; 35. Disc; 36. Counterweight block; 4. Testing mechanism; 41. Push rod; 42. Rotary disc; 43. Protrusion; 44. Drive assembly; 441. Drive motor; 442. Drive rod; 443. 1. First gear; 444. Gear ring; 5. Support seat; 6. Base; 7. Crossbeam; 37. Hydraulic rod; 38. Moving frame; 39. Clamping assembly; 391. Cylinder; 392. Push plate; 393. Rotating shaft; 394. Clamping plate; 395. Second gear; 396. Gear plate; 8. Connecting rod; 310. Slot; 311. Fixing rod; 312. Third gear; 313. Limiting plate; 314. Rotary motor; 9. Screw; 10. Knob. Detailed Implementation

[0033] The technical solutions of the present invention will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present invention, and not all embodiments.

[0034] Example 1: Please refer to Figures 1-9This invention relates to a device for testing the elasticity of synthetic fiber fabrics, comprising a testing platform 1, a hanging mechanism 2 at the top of the testing platform 1, the hanging mechanism 2 including a telescopic rod 21 at the top of the testing platform 1, a movable tube 22 slidably connected to the surface of the telescopic rod 21, a connecting shell 23 installed at the bottom of the movable tube 22, a hanging groove 24 opened inside the connecting shell 23, and a winding shaft 25 installed inside the hanging groove 24, wherein the synthetic fiber fabric is hung by the hanging mechanism 2; a counterweight mechanism 3 is provided at the bottom of the connecting shell 23, the counterweight mechanism 3 including an adjusting shell 31 at the bottom of the connecting shell 23, and a winding shaft 25 installed on the adjusting shell 31. The bottom vertical rod 32, the tension gauge 33 installed at the bottom of the vertical rod 32, the pulling shell 34 installed at the bottom of the tension gauge 33, the disc 35 set at the bottom of the adjusting shell 31, and the counterweight block 36 set at the top of the disc 35, adjust the elastic tension of the chemical fiber fabric through the counterweight mechanism 3; the top of the connecting shell 23 is provided with a detection mechanism 4, which includes a push rod 41 installed on one side of the moving tube 22, a rotating disk 42 sleeved on the surface of the moving tube 22, a protrusion 43 set at the top of the rotating disk 42, and a drive component 44 set on one side of the rotating disk 42, and performs elasticity detection on the chemical fiber fabric through the detection mechanism 4.

[0035] Specifically: In the aforementioned chemical fiber fabric elasticity performance testing device, the movable tube 22, slidably connected to the surface of the telescopic rod 21, can slide smoothly up and down along the telescopic rod 21. The connecting shell 23 installed at the bottom of the movable tube 22 provides a stable mounting base for the fabric. The hanging slot 24 inside the connecting shell 23 is used to quickly accommodate and remove the take-up shaft 25. The take-up shaft 25 is located inside the hanging slot 24. In the aforementioned chemical fiber fabric elasticity performance testing device, the adjusting shell 31 can be finely adjusted in position according to the fabric thickness and clamping requirements. The vertical rod 32 installed at the bottom of the adjusting shell 31 acts as an intermediate force transmission component, transmitting the tension of the counterweight 36 to the adjusting shell 31. The pull rod 32 installed at the bottom of the vertical rod 32... Force gauge 33 is used to detect the tensile force value of the chemical fiber fabric in real time. Pulling shell 34 installed at the bottom of force gauge 33 is used to connect and fix counterweight 36. In the above-mentioned chemical fiber fabric elasticity performance testing device, disc 35 set at the bottom of adjustment shell 31 is used to support multiple counterweights 36 and drive them to rotate. Counterweight 36 set at the top of disc 35 provides standardized vertical tension to perform static tensile testing on chemical fiber fabric. Push rod 41 will drive moving tube 22 to move upward when pushed by protrusion 43. Rotating disc 42 sleeved on the surface of moving tube 22 is used to install protrusion 43 and drive it to make circular motion. Protrusion 43 set at the top of rotating disc 42 is used to intermittently push push rod 41.

[0036] Example 2: Please refer to Figures 1-9Based on Embodiment 1, the drive assembly 44 includes a drive motor 441 disposed on one side of the rotating disk 42, a drive rod 442 mounted on the output end of the drive motor 441, a first gear 443 mounted on the surface of the drive rod 442, and a gear ring 444 mounted on the surface of the rotating disk 42. One side of the first gear 443 meshes with the gear ring 444, and the other end of the drive rod 442 is fixedly connected to the disk 35. The detection platform 1 includes a support base 5 movably connected to the surface of the rotating disk 42, a base 6 mounted on the bottom of the support base 5, a crossbeam 7 mounted on the top of the support base 5, and the top of the telescopic rod 21 is fixedly connected to the crossbeam 7. The counterweight mechanism 3 also includes a hydraulic rod 37 mounted on the top of the base 6, a movable frame 38 mounted on the output end of the hydraulic rod 37, and a clamping assembly 39 disposed on one side of the adjusting shell 31.

[0037] Specifically: In the above-mentioned chemical fiber fabric elasticity performance testing device, the drive motor 441 provides the power source for the entire testing mechanism 4. The gear ring 444 installed on the surface of the rotating disk 42 cooperates with the first gear 443 to drive the rotating disk 42 to rotate. In the above-mentioned chemical fiber fabric elasticity performance testing device, the hydraulic rod 37 provides lifting power for the moving frame 38. The moving frame 38 installed at the output end of the hydraulic rod 37 is used to push or pull the connecting rod 8. In the above-mentioned chemical fiber fabric elasticity performance testing device, the cylinder 391 provides driving force for the clamping action. The push plate 392 installed at the output end of the cylinder 391 is used to push the toothed plate 396 to move. The rotating shaft 393 movably connected to one side of the adjusting shell 31 provides rotational support for the clamping plate 394. The clamping plate 394 installed on the surface of the rotating shaft 393 is used to directly contact and press the chemical fiber fabric.

[0038] Example 3: Please refer to Figures 1-9 Based on Embodiments 1 and 2, the clamping assembly 39 includes a cylinder 391 mounted on one side of the adjusting housing 31, a push plate 392 mounted on the output end of the cylinder 391, a rotating shaft 393 movably connected to one side of the adjusting housing 31, a clamping plate 394 mounted on the surface of the rotating shaft 393, a second gear 395 mounted on the surface of the rotating shaft 393, a toothed plate 396 meshing with one side of the second gear 395, and a push plate 392 fixedly connected to the toothed plate 396 on one side. Connecting rods 8 are fixedly connected to both sides of the adjusting housing 31. The counterweight mechanism 3 also includes an open... A slot 310 is located on the top of the counterweight 36. Two sets of fixed rods 311 are movably connected inside the pull shell 34. A third gear 312 is installed on the surface of the fixed rod 311. A limiting plate 313 is installed on the surface of the fixed rod 311. A rotary motor 314 is fixedly connected inside the pull shell 34. The output end of the rotary motor 314 is fixedly connected to the fixed rod 311. The two sets of third gears 312 mesh with each other. A screw 9 is threaded inside the rotating disk 42. A knob 10 is installed at the bottom of the screw 9. The other end of the screw 9 is movably connected to the protrusion 43 through a bearing.

[0039] Specifically: In the aforementioned device for testing the elasticity of synthetic fiber fabrics, a second gear 395 mounted on the surface of the rotating shaft 393 engages with a toothed plate 396 to convert linear motion into rotational motion. The toothed plate 396, meshing with one side of the second gear 395, drives the second gear 395 to rotate. A push plate 392 is fixedly connected to the toothed plate 396, allowing the power of the cylinder 391 to be directly transmitted to the toothed plate 396. In the same device, two sets of fixed rods 311 movably connected inside the pulling shell 34 drive the limiting plate 313 to rotate. A third gear 312 mounted on the surface of the fixed rods 311 transmits rotational motion between the two fixed rods 311. The limiting plate 313 installed on the surface of the fixed rod 311 is used to lock the pull shell 34 in the slot 310. The rotary motor 314 fixedly connected inside the pull shell 34 provides rotational power to the fixed rod 311. The output end of the rotary motor 314 is fixedly connected to the fixed rod 311, so that the power is directly transmitted to the fixed rod 311. The two sets of third gears 312 mesh with each other to ensure that the two fixed rods 311 can rotate synchronously in opposite directions. The screw 9 threaded inside the rotating disk 42 is used to adjust the height position of the protrusion 43. The knob 10 installed at the bottom of the screw 9 makes it convenient for the operator to manually rotate the screw 9. The other end of the screw 9 is movably connected to the protrusion 43 through the bearing, so that the protrusion 43 rises and falls with the screw 9.

[0040] The working principle of this invention is as follows: The operator first fixes the synthetic fiber fabric to be tested onto the surface of the take-up shaft 25, then moves the take-up shaft 25 into the hanging slot 24, so that the bottom of the synthetic fiber fabric is vertically downward and aligned with the adjusting shell 31. Figure 1 As shown.

[0041] Then, the drive motor 441 is started, which drives the disc 35 to rotate. The disc 35 drives the counterweight 36 to rotate. There are six counterweights 36, and the weight of the six counterweights 36 is designed to increase in order to facilitate the adjustment of different detection weights. When the counterweight 36 of the specified weight rotates to the bottom of the pulling shell 34, the hydraulic rod 37 is activated. The hydraulic rod 37 drives the moving frame 38 to move. The moving frame 38, together with the connecting rod 8, drives the adjusting shell 31 to move downward. The adjusting shell 31, together with the vertical rod 32, drives the pulling shell 34 to insert into the slot 310 at the top of the counterweight 36.

[0042] Then, the rotary motor 314 is started, which drives the fixed rod 311 to rotate. The fixed rod 311 drives the third gear 312 to rotate. When the two sets of third gears 312 rotate relative to each other, they drive the two sets of fixed rods 311 to rotate. The fixed rod 311 drives the limiting plate 313 to rotate, so that the limiting plate 313 rotates and inserts into the slot 310, thus fixing the pull shell 34 and the counterweight 36.

[0043] Then, the hydraulic rod 37 is activated again, which moves the adjusting shell 31 upward. After the adjusting shell 31 moves upward, the bottom of the chemical fiber fabric is inserted into the adjusting shell 31. Then, the cylinder 391 is activated, which pushes the push plate 392 and the toothed plate 396 to move. The toothed plate 396 drives the second gear 395 to rotate. The second gear 395, in conjunction with the rotating shaft 393, drives the clamping plate 394 to rotate. The clamping plate 394 presses against the chemical fiber fabric to achieve a fixing effect. Then, the hydraulic rod 37 is controlled to move the moving frame 38 downward, so that the moving frame 38 is disengaged from the connecting rod 8, and the weight of the counterweight 36 is transferred to the chemical fiber fabric. The chemical fiber fabric is stretched by vertical tension, and the tensile force value of the chemical fiber fabric is detected by the tensile gauge 33.

[0044] Then, the drive motor 441 is restarted. The drive motor 441, together with the drive rod 442, drives the first gear 443 to rotate. The first gear 443 drives the gear ring 444 to rotate. The gear ring 444, together with the rotating disk 42, drives the protrusion 43 to rotate. When the protrusion 43 contacts the push rod 41, it pushes the push rod 41 upward. The push rod 41, together with the connecting shell 23, drives the fabric to move upward. When the push rod 41 rotates past the protrusion 43, the push rod 41 instantly loses its supporting force. Under the action of the counterweight 36, it causes the chemical fiber fabric to fall downward, which facilitates the detection of the change in instantaneous tensile force on the chemical fiber fabric and improves the detection effect.

[0045] After the test is completed, manually turn knob 10. Knob 10, together with screw 9, moves to adjust the height of protrusion 43, which can adjust the drop height of chemical fiber fabric and further improve the test effect.

[0046] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A device for detecting the elasticity of a chemical fiber fabric, comprising a detection platform (1), characterized in that: The testing platform (1) is provided with a hanging mechanism (2) on top. The hanging mechanism (2) includes a telescopic rod (21) on top of the testing platform (1), a moving tube (22) slidably connected to the surface of the telescopic rod (21), a connecting shell (23) installed at the bottom of the moving tube (22), a hanging slot (24) opened inside the connecting shell (23), and a winding shaft (25) set inside the hanging slot (24). The chemical fiber fabric is hung by the hanging mechanism (2). The bottom of the connecting shell (23) is provided with a counterweight mechanism (3). The counterweight mechanism (3) includes an adjustment shell (31) at the bottom of the connecting shell (23), a vertical rod (32) at the bottom of the adjustment shell (31), a tension gauge (33) at the bottom of the vertical rod (32), a pulling shell (34) at the bottom of the tension gauge (33), a disc (35) at the bottom of the adjustment shell (31), and a counterweight block (36) at the top of the disc (35). The elastic tension of the chemical fiber fabric is adjusted by the counterweight mechanism (3). The top of the connecting shell (23) is provided with a detection mechanism (4). The detection mechanism (4) includes a push rod (41) installed on one side of the moving tube (22), a rotating disk (42) sleeved on the surface of the moving tube (22), a protrusion (43) set on the top of the rotating disk (42), and a drive component (44) set on one side of the rotating disk (42). The elasticity of the chemical fiber fabric is tested by the detection mechanism (4).

2. The device for detecting the elasticity of chemical fabric according to claim 1, characterized in that: The drive assembly (44) includes a drive motor (441) disposed on one side of the rotating disk (42), a drive rod (442) mounted on the output end of the drive motor (441), a first gear (443) mounted on the surface of the drive rod (442), and a gear ring (444) mounted on the surface of the rotating disk (42).

3. The device for detecting the elasticity of chemical fabric according to claim 2, characterized in that: The first gear (443) meshes with the gear ring (444) on one side, and the other end of the drive rod (442) is fixedly connected to the disk (35).

4. The device for testing the elasticity properties of chemical fiber fabrics according to claim 1, characterized in that: The detection platform (1) includes a support base (5) movably connected to the surface of the rotating disk (42), a base (6) installed at the bottom of the support base (5), and a crossbeam (7) installed at the top of the support base (5). The top of the telescopic rod (21) is fixedly connected to the crossbeam (7).

5. The device for testing the elasticity properties of chemical fiber fabrics according to claim 1, characterized in that: The counterweight mechanism (3) also includes a hydraulic rod (37) installed on the top of the base (6), a movable frame (38) installed on the output end of the hydraulic rod (37), and a clamping assembly (39) located on one side of the adjusting shell (31).

6. The device for testing the elasticity properties of chemical fiber fabrics according to claim 5, characterized in that: The clamping assembly (39) includes a cylinder (391) mounted on one side of the adjusting housing (31), a push plate (392) mounted on the output end of the cylinder (391), a rotating shaft (393) movably connected to one side of the adjusting housing (31), a clamping plate (394) mounted on the surface of the rotating shaft (393), a second gear (395) mounted on the surface of the rotating shaft (393), and a toothed plate (396) meshing with one side of the second gear (395).

7. The device for testing the elasticity properties of chemical fiber fabrics according to claim 6, characterized in that: The push plate (392) is fixedly connected to the toothed plate (396) on one side, and the adjusting shell (31) is fixedly connected to the connecting rods (8) on both sides.

8. The device for testing the elasticity properties of chemical fiber fabrics according to claim 1, characterized in that: The counterweight mechanism (3) also includes a slot (310) opened on the top of the counterweight block (36), two sets of fixed rods (311) movably connected inside the pull shell (34), a third gear (312) installed on the surface of the fixed rod (311), and a limiting plate (313) installed on the surface of the fixed rod (311).

9. The device for testing the elasticity properties of chemical fiber fabrics according to claim 1, characterized in that: A rotary motor (314) is fixedly connected inside the pull shell (34). The output end of the rotary motor (314) is fixedly connected to the fixed rod (311), and two sets of third gears (312) mesh with each other.

10. The device for testing the elasticity properties of chemical fiber fabrics according to claim 1, characterized in that: The rotating disk (42) is internally threaded with a screw (9), and a knob (10) is installed at the bottom of the screw (9). The other end of the screw (9) is movably connected to the protrusion (43) through a bearing.

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