Carbon fiber ductility stretching detector

Abstract

The utility model discloses a carbon fiber ductility stretching detector, belongs to the technical field of carbon fiber detection, and aims to solve the problems that a tension detector needs to be driven by a threaded lead screw to move in the vertical direction, so that repeated stretching tests on carbon fibers in a short time are inconvenient, and the detection efficiency is high. The device comprises a base, a tension meter arranged at one end of the base and an adjustable stretching mechanism used for testing the to-be-tested carbon fiber textile, and the adjustable stretching mechanism comprises a vertical movement assembly and a position adjusting assembly; the vertical movement assembly comprises a disc arranged at one end of the tension meter and a motor fixed to the surface of the end, away from the tension meter, of the base. According to the device, the repeated stretching test process is convenient and rapid, so that the efficiency of the detection operation of the carbon fiber textile to be detected is improved, and the applicability of the device is improved.

Description

Technical Field

[0001] This utility model belongs to the field of carbon fiber testing technology, specifically relating to a carbon fiber ductility tensile testing instrument. Background Technology

[0002] Carbon fiber refers to high-strength, high-modulus fibers with a carbon content of over 90%. It boasts the highest heat resistance among all synthetic fibers. Made from acrylic and viscose fibers through high-temperature oxidation and carbonization, it is an excellent material for manufacturing high-tech equipment in aerospace and other applications. After production, sampling is often required to test the ductility of carbon fiber, necessitating the use of appropriate tensile testing equipment.

[0003] Chinese patent application CN220794916U discloses a textile extensibility testing instrument. When a threaded screw rotates, a threaded seat moves along the outside of the screw, driving a tension gauge to step and pull the textile, thus extending it and measuring its extensibility. A drive motor, in conjunction with the threaded screw, facilitates step-by-step lifting and lowering, allowing for easy control of the tension and increasing testing accuracy. However, in practical use, after determining the maximum elongation range of carbon fiber through tensile testing, to assess the material's durability and fatigue characteristics within this range, it is necessary to stretch the carbon fiber to the same length and perform multiple elongation tests to obtain more accurate results. However, the tension gauge requires a threaded screw to move vertically, making it inconvenient to perform repeated tensile tests on carbon fiber in a short time. This results in lower efficiency for the extensibility tensile testing work and is not conducive to its use.

[0004] Therefore, there is a need for a carbon fiber tensile testing instrument to solve the problem that existing tensile testing instruments require a screw to drive them vertically, which makes it inconvenient to perform tensile tests on repeated carbon fibers in a short time, thus reducing the efficiency of tensile testing. Utility Model Content

[0005] The purpose of this invention is to provide a carbon fiber ductility tensile testing instrument to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a carbon fiber ductility tensile testing instrument, comprising a base, a tension gauge disposed at one end of the base, and an adjustable tensile mechanism for testing carbon fiber textiles.

[0007] The adjustable tensioning mechanism includes a vertical motion component and a position adjustment component;

[0008] The vertical motion assembly includes a disc disposed at one end of the tension gauge, a motor fixed to the surface of the base away from the tension gauge, a movable plate attached to one end of the disc, an abutment groove extending through the middle of the movable plate, an abutment rod inserted into the abutment groove, and a limiting component acting on the movable plate.

[0009] It should be noted in the solution that one end of the abutment rod is fixed to the surface of the disc, the output end of the motor passes through the base and is fixed to the middle position of one end of the disc, and the bottom of the movable plate is fixed to the surface of the tension gauge.

[0010] It is further worth noting that the limiting component includes a limiting groove with a T-shaped cross-section on both sides of the movable plate and a limiting strip with a T-shaped cross-section inserted through the inner cavity of the limiting groove, one end of the limiting strip being fixed to the surface of the base.

[0011] Furthermore, it should be noted that the position adjustment assembly includes a groove formed in the disc near the contact rod, a first threaded rod rotatably connected inside the groove, a first threaded sleeve threadedly connected to the outer circumferential surface of the first threaded rod, and a rotating component for driving the first threaded rod to rotate.

[0012] In a preferred embodiment, the rotating component includes a circular groove on the surface of the disc located at the top of the rod groove, a first bevel gear fixedly sleeved on the first threaded rod extending into the first threaded sleeve, a first bevel gear rotatably connected inside the circular groove, a second bevel gear fixedly sleeved on the movable shaft, and an abutment opening at one end of the movable shaft, wherein the first bevel gear and the second bevel gear are meshed together.

[0013] In a preferred embodiment, the adjustable tensioning mechanism further includes a clamping assembly fixed to the bottom of the tension gauge and the bottom of the inner surface of the base, the clamping assembly including a storage slot opened at one end of the fixed plate.

[0014] In a preferred embodiment, the clamping assembly further includes a second threaded rod rotatably connected inside the storage slot, a second threaded sleeve threadedly connected to both sides of the outer circumferential surface of the second threaded rod, an electromagnetic suction plate fixed to the bottom of one of the second threaded sleeves, and a clamping plate fixed to the bottom of the other second threaded sleeve.

[0015] Compared with the prior art, the carbon fiber ductility tensile testing instrument provided by this utility model has at least the following beneficial effects:

[0016] (1) After adjusting the distance between the contact rod and the center of the disc by the maximum extension range of the carbon fiber textile to be tested, the motor is started so that the movable plate can drive the tension gauge to reciprocate in the vertical direction, thereby repeatedly stretching the carbon fiber textile to be tested. Since the carbon fiber textile to be tested can be stretched to the same length and repeated, the durability and fatigue characteristics of the carbon fiber material within the maximum extension range can be better evaluated, and the results of the carbon fiber ductility test are more accurate. Moreover, the stretching of this device is achieved by the contact rod moving in a circular motion against the contact groove, which makes the repeated stretching test convenient and fast, thereby improving the efficiency of the test operation of the carbon fiber textile to be tested and thus improving the applicability of the device.

[0017] (2) By extending both ends of the carbon fiber textile to be tested into the interior of the adjacent electromagnetic chuck plate and rotating the second threaded sleeve, the electromagnetic chuck plate and the clamping plate clamp and fix the carbon fiber textile. After the electromagnetic chuck plate is opened, the magnetic attraction between the electromagnetic chuck plate and the clamping plate can improve the stability of the carbon fiber textile clamping, thereby further improving the applicability of the device. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention from the front view.

[0019] Figure 2 This is a three-dimensional structural diagram of the disc in this utility model;

[0020] Figure 3 In this utility model Figure 2 Enlarged structural diagram at point A;

[0021] Figure 4 This is a three-dimensional structural diagram of the present invention viewed from the rear.

[0022] Figure 5 This is a three-dimensional cross-sectional view of a part of the structure in this utility model.

[0023] In the diagram: 1. Base; 2. Force gauge; 3. Disc; 4. Motor; 5. Movable plate; 6. Contact groove; 7. Contact rod; 8. Limiting groove; 9. Limiting strip; 10. Rod groove; 11. First threaded rod; 12. First threaded sleeve; 13. First bevel gear; 14. Movable shaft; 15. Second bevel gear; 16. Contact port; 17. Fixed plate; 18. Storage groove; 19. Second threaded rod; 20. Second threaded sleeve; 21. Electromagnetic suction plate; 22. Clamping plate; 23. Circular groove. Detailed Implementation

[0024] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will be apparent to those skilled in the art. Example

[0025] Please see Figure 1-5 This utility model provides a carbon fiber ductility tensile testing instrument, including a base 1, a tension gauge 2 disposed at one end of the base 1, and an adjustable tensile mechanism for testing carbon fiber textiles.

[0026] The adjustable tensioning mechanism includes a vertical motion component and a position adjustment component;

[0027] The vertical motion assembly includes a disc 3 located at one end of the force gauge 2, a motor 4 fixed to the surface of the base 1 away from the end of the force gauge 2, a movable plate 5 attached to one end of the disc 3, an abutment groove 6 extending through the middle of the movable plate 5, an abutment rod 7 inserted into the abutment groove 6, and a limiting component acting on the movable plate 5. One end of the abutment rod 7 is fixed to the surface of the disc 3, the output end of the motor 4 passes through the base 1 and is fixed to the middle of one end of the disc 3, and the bottom of the movable plate 5 is fixed to the surface of the force gauge 2.

[0028] By fixing carbon fiber textiles to one end of the tension gauge 2 and the other end of the carbon fiber textiles, and then starting the motor 4 to rotate the disc 3, the contact rod 7 can move in a circular motion with the disc 3 under the connection of the position adjustment component. In conjunction with the limiting component, the movable plate 5 can reciprocate in the vertical direction. This allows the tension gauge 2 to drive the carbon fiber textiles fixed at the bottom to undergo repeated tensile tests. This allows the carbon fiber textiles to be repeatedly stretched to the same test length, thereby better evaluating the durability and fatigue characteristics of the carbon fiber material within its maximum elongation range and making the results of the carbon fiber ductility test more accurate. The stretching of this device is achieved by the contact rod 7 moving in a circular motion against the contact groove 6, which allows the movable plate 5 to perform a single reciprocating motion in a short time, making the repeated tensile test convenient and fast.

[0029] Please see Figure 1-5 The limiting components include limiting grooves 8 with a T-shaped cross-section on both sides of the movable plate 5 and limiting strips 9 with a T-shaped cross-section inserted through the inner cavity of the limiting grooves 8. One end of the limiting strip 9 is fixed to the surface of the base 1.

[0030] When the movable plate 5 is resisted by the abutting rod 7, it is also resisted by the inner surface of the limiting groove 8 and the limiting strip 9. This can limit the movement trajectory of the movable plate 5, so that the movable plate 5 can maintain horizontal reciprocating motion in the vertical direction. Furthermore, due to the shape of the limiting groove 8 and the limiting strip 9, the movable plate 5 can be prevented from moving in the front and back direction under the abutting action, causing the abutting rod 7 to disengage from the interior of the abutting groove 6.

[0031] Please see Figure 1-5 The position adjustment assembly includes a rod groove 10 opened at the position of the disc 3 near the contact rod 7, a first threaded rod 11 rotatably connected inside the rod groove 10, a first threaded sleeve 12 threadedly connected to the outer peripheral surface of the first threaded rod 11, and a rotating component that drives the first threaded rod 11 to rotate.

[0032] The distance between the abutment rod 7 and the top and bottom of the disk 3 is adjusted according to the maximum extension range of the carbon fiber textile. This makes the displacement change of the tension gauge 2 during reciprocating motion slightly less than the maximum extension range of the carbon fiber textile. The first threaded rod 11 is rotated by the rotating component. Since the inner cavity of the rod groove 10 can act as an abutment and limiter on the first threaded sleeve 12, the first threaded sleeve 12 can move vertically under the cooperation between the internal thread structure on its inner wall and the external thread structure on the outer circumference of the first threaded rod 11. This allows the distance between the abutment rod 7 and the center of the disk 3 to be adjusted, thereby adjusting the distance between the top and bottom of the abutment rod 7 at one end of the disk 3, and thus achieving the adjustment of the stretch length of the carbon fiber textile.

[0033] Please see Figure 1-5 The rotating component includes a circular groove 23 on the surface of the disc 3 located at the top of the rod groove 10, a first bevel gear 13 fixedly sleeved on the first threaded rod 11 extending into the first threaded sleeve 12, a first bevel gear 13 rotatably connected inside the circular groove 23, a second bevel gear 15 fixedly sleeved on the movable shaft 14, and an abutment opening 16 at one end of the movable shaft 14. The first bevel gear 13 and the second bevel gear 15 are meshed together.

[0034] By inserting one end of the horn wrench into the contact port 16 and turning the movable shaft 14, the first threaded rod 11 can rotate under the meshing action between the second bevel gear 15 and the first bevel gear 13. Example

[0035] Therefore, referring to Figure 1-5As shown, the adjustable tensioning mechanism also includes a clamping assembly fixed to the bottom of the tension gauge 2 and the bottom of the inner surface of the base 1. The clamping assembly includes a storage slot 18 opened at one end of the fixed plate 17, a second threaded rod 19 rotatably connected to the inside of the storage slot 18, a second threaded sleeve 20 threadedly connected to both sides of the outer peripheral surface of the second threaded rod 19, an electromagnetic suction plate 21 fixed to the bottom of one of the second threaded sleeves 20, and a clamping plate 22 fixed to the bottom of the other second threaded sleeve 20.

[0036] By extending both ends of the carbon fiber textile to the middle position of the two sets of electromagnetic suction plates 21 and clamping plates 22, and rotating the second threaded rod 19, the inner cavity of the storage groove 18 can act as a stop and limit for the two adjacent second threaded sleeves 20. Furthermore, the external thread structures at both ends of the outer circumference of the second threaded rod 19 are arranged in opposite directions. This allows the second threaded sleeve 20 to reduce the distance between the two adjacent second threaded sleeves 20 under the cooperation of the internal thread structure on its inner wall and the external thread structure on the outer circumference of the second threaded rod 19, until the electromagnetic suction plates 21 and clamping plates 22 can clamp and fix the carbon fiber textile. Then, stop rotating the second threaded rod 19. Finally, open the two electromagnetic suction plates 21. Since the clamping plate 22 is made of iron, the magnetic attraction between the electromagnetic suction plates 21 and clamping plates 22 improves the clamping stability of the carbon fiber textile.

Claims

1. A carbon fiber tensile testing instrument, comprising a base (1) and a tension gauge (2) disposed at one end of the base (1), characterized in that: It also includes an adjustable tensioning mechanism for testing carbon fiber textiles. The adjustable tensioning mechanism includes a vertical motion component and a position adjustment component; The vertical motion assembly includes a disc (3) located at one end of the tension gauge (2), a motor (4) fixed to the surface of the base (1) away from the tension gauge (2), a movable plate (5) attached to one end of the disc (3), an abutment groove (6) through the middle of the movable plate (5), an abutment rod (7) inserted into the abutment groove (6), and a limiting component acting on the movable plate (5).

2. The carbon fiber ductility tensile testing instrument according to claim 1, characterized in that: One end of the abutment rod (7) is fixed to the surface of the disc (3), the output end of the motor (4) passes through the base (1) and is fixed to the middle position of one end of the disc (3), and the bottom of the movable plate (5) is fixed to the surface of the tension gauge (2).

3. The carbon fiber ductility tensile testing instrument according to claim 2, characterized in that: The limiting component includes a limiting groove (8) with a T-shaped cross-section on both sides of the movable plate (5) and a limiting strip (9) with a T-shaped cross-section inserted through the inner cavity of the limiting groove (8), one end of the limiting strip (9) being fixed to the surface of the base (1).

4. The carbon fiber ductility tensile testing instrument according to claim 1, characterized in that: The position adjustment assembly includes a rod groove (10) opened on the disc (3) near the contact rod (7), a first threaded rod (11) rotatably connected inside the rod groove (10), a first threaded sleeve (12) threadedly connected to the outer circumferential surface of the first threaded rod (11), and a rotating component that drives the first threaded rod (11) to rotate.

5. The carbon fiber ductility tensile testing instrument according to claim 4, characterized in that: The rotating component includes a movable shaft (14), a circular groove (23) opened on the surface of the disc (3) at the top of the rod groove (10), a first bevel gear (13) fixedly sleeved on the first threaded rod (11) extending to the inside of the first threaded sleeve (12), a first bevel gear (13) rotatably connected inside the circular groove (23), a second bevel gear (15) fixedly sleeved on the movable shaft (14), and an abutment opening (16) opened at one end of the movable shaft (14). The first bevel gear (13) and the second bevel gear (15) are meshed together.

6. The carbon fiber ductility tensile testing instrument according to claim 1, characterized in that: The adjustable tensioning mechanism also includes a fixed plate (17), a clamping assembly fixed to the bottom of the tension gauge (2) and the bottom of the inner surface of the base (1), and the clamping assembly includes a storage slot (18) opened at one end of the fixed plate (17).

7. The carbon fiber ductility tensile testing instrument according to claim 6, characterized in that: The clamping assembly further includes a second threaded rod (19) rotatably connected inside the storage slot (18), a second threaded sleeve (20) threadedly connected to both sides of the outer peripheral surface of the second threaded rod (19), an electromagnetic suction plate (21) fixed to the bottom of one of the second threaded sleeves (20), and a clamping plate (22) fixed to the bottom of the other second threaded sleeve (20).

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