Experimental device for tensile property of material

Abstract

The utility model discloses a material tensile property experimental device, and belongs to the field of material detection.The experimental device comprises a testboard and a tension sensor fixedly installed at one end of the testboard, a sliding block is movably arranged at the end, away from the tension sensor, of the testboard, and a driving mechanism is arranged on the testboard; a horizontal measuring mechanism is also arranged on the test board; the horizontal measuring mechanism comprises a measuring scale, a frame which sleeves the measuring scale in a sliding manner, a pointer which is fixedly connected to the frame and is used for indicating the end part of the fiber material, and a knurled screw which is inserted into the frame in a threaded manner and is propped against the measuring scale. The height difference between the end part of the fiber material and the tension part of the tension sensor is conveniently and intuitively measured through the two horizontal measurement mechanisms, and the levelness of the fiber material can be accurately adjusted by comparing the measurement results of the two horizontal measurement mechanisms, so that the test result deviation caused by the inclination of the fiber material is avoided, and the scientificity and the accuracy of the test are improved.

Description

Technical Field

[0001] This application relates to the field of materials testing technology, specifically a material tensile property testing device. Background Technology

[0002] Polyester fiber, as the primary type of synthetic fiber, is produced by spinning polyester, which is formed by the condensation polymerization of organic diacids and diols. It possesses significant advantages such as excellent wrinkle resistance and shape retention, high strength, strong elastic recovery, durability, wrinkle-free and non-pilling properties, and lint resistance. After polyester fiber production, tensile testing is required to verify its compliance with standards, necessitating the use of tensile testing equipment.

[0003] A tensile strength testing device is disclosed in Chinese Utility Model Patent No. CN218726117U. It utilizes a second throttle mechanism in conjunction with a clamping assembly to rotate a threaded rod, causing a pressure block to move vertically and thus clamp and fix one end of the fiber material. Simultaneously, a horizontal measuring mechanism and measuring scale are used. The first throttle rotates a second lead screw, causing an operating block to move vertically, allowing for fine-tuning of the clamped fiber material. The measuring scale is used to observe whether the fiber material is horizontal with the graduation lines, thereby precisely controlling the angle of the fiber material, reducing testing errors, and improving the accuracy of the test results.

[0004] However, in practical applications, when adjusting the level of the end of the fiber material furthest from the tensile sensor to align it with the sensor end, the fiber material needs to be loose to avoid affecting the tensile test. However, the measuring ruler is fixed to the top center of the test platform via a vertical plate. With the fiber material loose, it is difficult to quickly adjust the level of both ends, and this easily leads to errors in the adjusted levelness of the fiber ends. This problem limits the efficiency and accuracy of the device in actual testing.

[0005] Therefore, this application provides a material tensile property testing device to solve the above-mentioned problems. Utility Model Content

[0006] The purpose of this application is to provide a material tensile performance testing device that can precisely adjust the levelness of the fiber material, ensure that the material is subjected to uniform force during the test, and improve the accuracy of the test results.

[0007] To achieve the above objectives, this application provides the following technical solution: a material tensile property testing device, comprising a testing platform and a tensile sensor fixedly installed at one end of the testing platform, a slider movably disposed at the end of the testing platform away from the tensile sensor, a driving mechanism for driving the slider to move closer to or away from the tensile sensor provided on the testing platform; a clamping mechanism for clamping the end of the fiber material provided on the slider, and an adjustment mechanism for adjusting the height of the clamping mechanism provided on the slider;

[0008] The test stand is also equipped with a leveling mechanism for measuring the levelness of fiber materials; there are two leveling mechanisms, which are respectively installed on the tension sensor and the slider. Each leveling mechanism includes a measuring ruler, a frame that is slidably mounted on the measuring ruler, a pointer that is fixedly connected to the frame for indicating the end of the fiber material, and a knurled screw that is threaded into the frame and abuts against the measuring ruler. When it is necessary to adjust the horizontal position of both ends of the fiber material, the height of the fiber material end on the tension sensor, i.e., the height of the tension part of the tension sensor, is measured by the horizontal measuring mechanism on the tension sensor. During measurement, the knurled screws are loosened, and then the frame is slid up or down to make the pointer on the frame and the tension part of the tension sensor at the same horizontal plane. Then, the position of the frame is fixed by the knurled screws. At this time, the position height of the frame on the measuring ruler is recorded. Then, the horizontal measuring mechanism on the slider is adjusted so that the frame on it is at the same height as the frame on the tension sensor. Then, the height of the clamping mechanism is adjusted by the adjustment mechanism so that the limiting material end on the clamping mechanism and the pointer are at the same horizontal plane, thereby ensuring that the fiber material is in a horizontal state during the test.

[0009] Preferably, to facilitate the guiding movement of the slider: a through guide groove is provided on the test platform, the bottom of the slider is inserted into the guide groove, and the outer wall of the slider abuts against the inside of the guide groove. This ensures the stability and accuracy of the slider's movement, greatly reduces the slider's swaying and deviation during movement, provides a stable and reliable moving platform for subsequent tensile testing of fiber materials, ensures the consistency of the force direction of the fiber material during testing, and improves the accuracy of the test results.

[0010] Preferably, to facilitate the movement of the slider towards or away from the tension sensor: the driving mechanism includes a first lead screw threaded into the bottom of the slider and a forward / reverse motor fixedly mounted on the lower end of the test platform. The output end of the forward / reverse motor is fixedly connected to the shaft of the first lead screw. Bearing seats are fitted at both ends of the first lead screw, and the bearing seats are fixedly mounted on the lower end of the test platform by bolts. This allows for precise control of the slider's movement speed and direction. By adjusting the speed and direction of the forward / reverse motor, different testing requirements can be met, such as quickly approaching the initial position and slowly and steadily stretching fiber materials, thereby improving testing efficiency and the reliability of test results.

[0011] Preferably, to facilitate clamping and fixing the end of the fiber material away from the tensile sensor: the clamping mechanism includes a lifting block, a pressure block, and a second lead screw. The lifting block has a mounting groove at its end near the tensile sensor. The pressure block is disposed within the mounting groove, and a guide block is fixedly connected to the pressure block and slidably connected to the inner wall of the mounting groove. The second lead screw is threaded into the upper end of the lifting block, and the bottom of the lifting block extends into the mounting groove and is rotatably connected to the pressure block. A first handle is fixedly connected to the upper end of the second lead screw. This clamping method, with the lead screw and pressure block working together, provides a strong and stable clamping force, ensuring that the fiber material will not loosen or slip due to tensile force during testing, thus guaranteeing the continuity of the testing process and the accuracy of the test results.

[0012] Preferably, to facilitate the alignment of the pointer with the end of the fiber material, the lifting block has a groove communicating with the mounting slot on the side near the pointer, and the pointer and the groove are located in the same vertical plane. This simplifies the alignment process between the end of the fiber material and the pointer, improves the convenience and accuracy of operation, reduces leveling deviations caused by observation errors, and further ensures the reliability of the test results.

[0013] Preferably, to facilitate adjustment of the fiber material's end, the adjustment mechanism includes a third lead screw rotatably inserted into the slider, a lifting block threaded onto the third lead screw, and a sliding connection between the lifting block and the slider. A second handle is fixedly connected to the upper end of the third lead screw. This allows for precise adjustment of the height of the fiber material's clamping end, ensuring it is at the same horizontal level as the tension sensor end. In fiber material tensile testing, ensuring both ends are at the same level ensures uniform force distribution during stretching, preventing excessive or insufficient localized force due to inconsistent heights, thus improving the reliability of the test results. Furthermore, this adjustment mechanism is easy to operate; fine-tuning of the height can be achieved simply by rotating the handle, reducing the operator's workload and improving experimental efficiency.

[0014] This application provides a convenient and intuitive method for measuring the levelness of fiber materials through the design of two leveling measuring mechanisms. By comparing the measurement results of the two mechanisms, operators can precisely adjust the levelness of the fiber material. In actual testing, ensuring that the fiber material is level is crucial, as tilting the fiber material will lead to uneven stress and affect the accuracy of the test results. This leveling measuring mechanism effectively avoids this situation, significantly improving the scientific rigor and reliability of the test. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a device for testing the tensile properties of a material.

[0016] Figure 2 for Figure 1 The structural bottom view in the middle;

[0017] Figure 3 This is a schematic diagram of the horizontal measuring mechanism;

[0018] Figure 4 This is a schematic diagram of the clamping mechanism.

[0019] Figure 5 This is a schematic diagram of the adjustment mechanism.

[0020] In the picture:

[0021] 1. Test stand; 11. Guide groove; 2. Tension sensor; 3. Slider; 4. Drive mechanism; 41. First lead screw; 42. Forward and reverse motor; 43. Bearing seat; 5. Clamping mechanism; 51. Lifting block; 511. Mounting groove; 512. Groove; 52. Pressure block; 53. Second lead screw; 531. First handle; 54. Guide block; 6. Adjustment mechanism; 61. Third lead screw; 611. Second handle; 7. Horizontal measuring mechanism; 71. Measuring ruler; 72. Frame; 73. Pointer; 74. Knurled screw. Detailed Implementation

[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0023] This embodiment provides a device for testing the tensile properties of materials, such as... Figure 1-5As shown, the experimental apparatus includes a test platform 1 and a tension sensor 2 fixedly installed at one end of the test platform 1. A slider 3 is movably mounted at the end of the test platform 1 away from the tension sensor 2. A drive mechanism 4 is provided on the test platform 1 to drive the slider 3 to move closer to or away from the tension sensor 2. A clamping mechanism 5 is provided on the slider 3 for clamping the end of the fiber material. An adjustment mechanism 6 is also provided on the slider 3 for adjusting the height of the clamping mechanism 5.

[0024] The test bench 1 is also equipped with a horizontal measuring mechanism 7 for measuring the levelness of fiber materials; there are two horizontal measuring mechanisms 7, which are respectively set on the tension sensor 2 and the slider 3. The horizontal measuring mechanism 7 includes a measuring ruler 71, a frame 72 that is slidably mounted on the measuring ruler 71, a pointer 73 that is fixedly connected to the frame 72 for indicating the end of the fiber material, and a knurled screw 74 that is threaded into the frame 72 and abuts against the measuring ruler 71. When it is necessary to adjust the horizontality of both ends of the fiber material, the height of the fiber material end on the tension sensor 2, i.e., the height of the tension part of the tension sensor 2, is measured by the horizontal measuring mechanism 7 on the tension sensor 2. During measurement, the knurled screw 74 is loosened, and then the frame 72 is slid up or down until the pointer 73 on the frame 72 is at the same horizontal plane as the tension part of the tension sensor 2. Then, the position of the frame 72 is fixed by the knurled screw 74. At this time, the position height of the frame 72 on the measuring ruler 71 is recorded. Then, the horizontal measuring mechanism 7 on the slider 3 is adjusted so that the frame 72 on it is at the same height as the frame 72 on the tension sensor 2. Then, the height of the clamping mechanism 5 is adjusted by the adjusting mechanism 6 so that the limiting material end on the clamping mechanism 5 is at the same horizontal plane as the pointer 73, thereby ensuring that the fiber material is in a horizontal state during the test. The design of the two horizontal measuring mechanisms 7 provides a convenient and intuitive way to measure the horizontality of the fiber material. By comparing the measurement results of the two horizontal measuring mechanisms 7, the operator can accurately adjust the horizontality of the fiber material. In actual testing, ensuring the fiber material is level is crucial, as tilting the fiber material can lead to uneven stress and affect the accuracy of the test results. This leveling measuring mechanism 7 effectively avoids this situation, significantly improving the scientific rigor and reliability of the test.

[0025] To facilitate the guiding movement of slider 3, a through guide groove 11 is provided on the test platform 1. The bottom of slider 3 is inserted into the guide groove 11, and the outer wall of slider 3 abuts against the interior of guide groove 11. The outer wall of slider 3 and the inner wall of guide groove 11 are machined into smooth planes. When slider 3 moves under the action of drive mechanism 4, the inner wall of guide groove 11 constrains slider 3, restricting its direction of movement, allowing it to slide only along the direction of guide groove 11. This ensures the stability and accuracy of slider 3's movement, greatly reduces the swaying and deviation of slider 3 during movement, provides a stable and reliable moving platform for subsequent tensile testing of fiber materials, ensures the consistency of the force direction of fiber materials during testing, and improves the accuracy of test results.

[0026] To facilitate the movement of the slider 3 towards or away from the tension sensor 2, the drive mechanism 4 includes a first lead screw 41 threaded into the bottom of the slider 3 and a forward / reverse motor 42 fixedly mounted on the lower end of the test bench 1. The output end of the forward / reverse motor 42 is fixedly connected to the shaft of the first lead screw 41. Both ends of the first lead screw 41 are fitted with bearing seats 43, which are fixedly mounted on the lower end of the test bench 1 by bolts. When the forward / reverse motor 42 operates, the output shaft drives the first lead screw 41 to rotate. Since the first lead screw 41 is threadedly connected to the slider 3, according to the lead screw transmission principle, the rotation of the lead screw is converted into linear motion of the slider 3 moving towards or away from the tension sensor 2 in the horizontal direction. The bearing seats 43 provide stable support for the first lead screw 41, reducing radial runout and axial movement during lead screw rotation. The movement speed and direction of the slider 3 can be precisely controlled. By adjusting the speed and direction of the forward / reverse motor 42, different testing requirements can be met, such as quickly approaching the initial position and slowly and steadily stretching fiber materials, improving testing efficiency and the reliability of test results.

[0027] To facilitate clamping and fixing the end of the fiber material away from the tension sensor 2, the clamping mechanism 5 includes a lifting block 51, a pressure block 52, and a second lead screw 53. The lifting block 51 has a mounting groove 511 at its end near the tension sensor 2. The pressure block 52 is disposed within the mounting groove 511, and a guide block 54 is fixedly connected to the pressure block 52 and slidably connected to the inner wall of the mounting groove 511. The second lead screw 53 is threaded into the upper end of the lifting block 51, and the bottom of the lifting block 51 extends into the mounting groove 511 and is rotatably connected to the pressure block 52. A first handle 531 is fixedly connected to the upper end of the second lead screw 53. Rotating the first handle 531 causes the second lead screw 53 to rotate. The pressure block 52 is slidably connected to the inner wall of the mounting groove 511 via the guide block 54, restricting the rotational freedom of the pressure block 52 so that it can only move vertically within the mounting groove 511. As the second lead screw 53 rotates, the pressure block 52 gradually descends or rises, achieving clamping and releasing of the fiber material end. This clamping method, in which the lead screw and pressure block 52 work together, provides a strong and stable clamping force, ensuring that the fiber material will not loosen or slip due to tensile force during the test, thus guaranteeing the continuity of the test process and the accuracy of the test results.

[0028] To facilitate the alignment of pointer 73 with the end of the fiber material, the lifting block 51 has a groove 512 on the side near pointer 73 that communicates with the mounting slot 511. Pointer 73 and groove 512 are located in the same vertical plane. When the level of the fiber material is adjusted by the leveling mechanism 7, pointer 73 can clearly and accurately indicate the position of the fiber material end, making it easy for operators to observe and compare. This simplifies the alignment process between the fiber material end and pointer 73, improves the convenience and accuracy of operation, reduces level adjustment deviations caused by observation errors, and further ensures the reliability of test results.

[0029] To facilitate adjustment of the fiber material's end, the adjustment mechanism 6 includes a third lead screw 61 rotatably inserted into the slider 3, a lifting block 51 threaded onto the third lead screw 61, and a sliding connection between the lifting block 51 and the slider 3. A second handle 611 is fixedly connected to the upper end of the third lead screw 61. Rotating the second handle 611 causes the third lead screw 61 to rotate. Because the lifting block 51 is threaded onto the third lead screw 61 and slidably connected to the slider 3, it moves up and down along the axial direction of the third lead screw 61 under the action of the lead screw drive, thereby adjusting the height of the clamping mechanism 5. This allows for precise adjustment of the height of the fiber material clamping end, ensuring it is at the same horizontal level as the end of the tension sensor 2. In fiber material tensile testing, ensuring both ends are at the same level ensures uniform force distribution during tensile testing, preventing excessive or insufficient local force due to inconsistent heights, thus improving the reliability of the test results. Furthermore, the adjustment mechanism 6 is easy to operate; only the handle needs to be rotated for fine-tuning, reducing the operator's workload and improving experimental efficiency.

[0030] Preparation stage: The forward and reverse motor 42 of the drive mechanism 4 drives the first lead screw 41 to rotate, driving the slider 3 to move closer to the tension sensor 2. One end of the fiber material is connected to the tension part of the tension sensor 2. Then, by rotating the first handle 531, the second lead screw 53 is rotated, causing the pressure block 52 to descend and clamp the other end of the fiber material between the lower end of the pressure block 52 and the bottom wall of the mounting groove 511.

[0031] Horizontal adjustment stage: Loosen the knurled screws 74 on the horizontal measuring mechanism 7 of the tension sensor 2, slide the frame 72 up and down so that the pointer 73 and the tension part of the tension sensor 2 are on the same horizontal plane, then tighten the knurled screws 74 to fix the position of the frame 72, and record the position height of the frame 72 on the measuring ruler 71. Next, adjust the horizontal measuring mechanism 7 on the slider 3 so that its frame 72 is at the same height as the frame 72 on the tension sensor 2. Then, turn the second handle 611 to drive the third lead screw 61 to rotate, adjust the height of the lifting block 51 so that the end of the fiber material on the clamping mechanism 5 is on the same horizontal plane as the pointer 73, ensuring that the fiber material is horizontal during the test.

[0032] Testing phase: After completing the above operations, the forward and reverse motor 42 is reversed again by the drive mechanism 4, which drives the first lead screw 41 to rotate in the opposite direction, causing the slider 3 to move away from the tension sensor 2, thus stretching the fiber material. The tension sensor 2 measures the tension on the fiber material in real time, thereby testing the tensile strength of the fiber material.

[0033] The wiring diagram of the forward and reverse motor 42 and the tension sensor 2 in this utility model is common knowledge in the field. Its working principle is a well-known technology. The appropriate model is selected according to the actual use. Therefore, the control method and wiring arrangement of the forward and reverse motor 42 and the tension sensor 2 will not be explained in detail.

[0034] The control method of this application is through a controller. The control circuit of the controller can be implemented by a person skilled in the art through simple programming. The power supply and grounding are also common knowledge in the art. Since this application is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail here.

[0035] It should be noted that many of the standard parts used in this application are available on the market, while non-standard parts can be specially customized. The connection method used in this application is also a very common method in the mechanical field, and will not be described in detail here.

[0036] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and concept of this application, should be included within the scope of protection of this application.

Claims

1. A material tensile property experiment device, comprising a test table (1) and a tension sensor (2) fixedly installed at one end of the test table (1), a sliding block (3) movably arranged at the end of the test table (1) away from the tension sensor (2), and a driving mechanism (4) arranged on the test table (1) and used to drive the sliding block (3) to move close to or away from the tension sensor (2); a clamping mechanism (5) arranged on the sliding block (3) and used to clamp the end of a fiber material, and an adjusting mechanism (6) arranged on the sliding block (3) and used to adjust the height of the clamping mechanism (5); a level measuring mechanism (7) arranged on the test table (1) and used to measure the levelness of the fiber material; characterized in that two level measuring mechanisms (7) are arranged on the tension sensor (2) and the sliding block (3) respectively, and each level measuring mechanism (7) comprises a measuring scale (71), a frame (72) sleeved on the measuring scale (71), a pointer (73) fixedly connected to the frame (72) and used to indicate the end of the fiber material, and a knurled screw (74) threadedly inserted into the frame (72) and abutting against the measuring scale (71).

2. The material tensile property testing apparatus of claim 1, wherein: A through guide groove (11) is formed in the test table (1), the bottom of the sliding block (3) is inserted into the guide groove (11), and the outer wall of the sliding block (3) abuts against the inner portion of the guide groove (11).

3. The material tensile property testing apparatus of claim 1, wherein: The driving mechanism (4) comprises a first lead screw (41) threadedly inserted into the bottom of the sliding block (3) and a forward-reverse motor (42) fixedly installed at the lower end of the test table (1), the output end of the forward-reverse motor (42) is fixedly connected to the shaft of the first lead screw (41), the both ends of the first lead screw (41) are sleeved with bearing seats (43) fixedly installed at the lower end of the test table (1) by bolts.

4. The material tensile property testing apparatus of claim 1, wherein: The clamping mechanism (5) comprises a lifting block (51), a pressing block (52) and a second lead screw (53), the lifting block (51) is provided with an installation groove (511) at the end close to the tension sensor (2), the pressing block (52) is arranged in the installation groove (511), the pressing block (52) is fixedly connected with a guide block (54) slidably connected to the inner wall of the installation groove (511), the second lead screw (53) is threadedly inserted into the upper end of the lifting block (51), the bottom of the lifting block (51) extends into the installation groove (511) and is rotationally connected to the pressing block (52), and the upper end of the second lead screw (53) is fixedly connected with a first handle (531).

5. The material tensile property testing apparatus of claim 4, wherein: The lifting block (51) is provided with a groove (512) in communication with the installation groove (511) at the side close to the pointer (73), and the pointer (73) and the groove (512) are located in the same vertical plane.

6. The material tensile property testing apparatus of claim 4, wherein: The adjusting mechanism (6) comprises a third screw rod (61) rotatably inserted into the sliding block (3), the lifting block (51) is threadedly sleeved on the third screw rod (61), and the lifting block (51) is slidably connected with the sliding block (3), and the upper end of the third screw rod (61) is fixedly connected with a second handle (611).

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