Tensile strength testing device for carbon fiber plate

Abstract

The invention discloses a tensile strength testing device for a carbon fiber plate, and relates to the technical field of carbon fiber plate test.The tensile strength testing device comprises a stretching mechanism, a connecting plate, a clamping mechanism and an adjusting mechanism, the two ends of a carbon fiber plate sample are fixed to the clamping mechanism, and the clamping mechanism comprises a set of clamps which are the same in structure and are correspondingly arranged; one end of the connecting plate is fixed at the driving end of the stretching mechanism, and the adjusting mechanism is mounted on the connecting plate and is arranged corresponding to the carbon fiber plate sample; the adjusting mechanism comprises a lifting module, a feeding module and an adjusting module, the lifting module and the feeding module are used for adjusting the position of the adjusting module, and the adjusting module is used for regulating and controlling the temperature and humidity of the carbon fiber plate sample. According to the invention, on the basis of a common tensile test, temperature and humidity variables can be freely adjusted, and the flexibility and comprehensiveness of a performance test are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of carbon fiber plate testing, and specifically to a tensile strength testing device for carbon fiber plates. Background Technique

[0002] A carbon fiber plate is a carbon fiber sheet formed by infiltrating and hardening carbon fibers arranged in the same direction with resin, which can effectively solve the problems of difficult construction and large engineering quantity of multi-layer carbon fiber cloth, has good reinforcement effect and convenient construction. Using high-quality carbon fiber raw materials and good basic resin, the carbon fiber plate has good properties such as high tensile strength, corrosion resistance, earthquake resistance, and impact resistance.

[0003] The tensile test of the carbon fiber plate is an important test of the mechanical properties of materials, which is used to evaluate the tensile behavior of the carbon fiber plate during the force application process and obtain key mechanical property parameters such as strength, ductility, and elastic modulus.

[0004] The current device applied to the tensile test of the carbon fiber plate is a standard tensile machine. By fixing both ends of the carbon fiber plate with clamps and applying an external force to one side for stretching, observing the deformation state of the carbon fiber plate, and judging its tensile performance. However, the tensile performance of the carbon fiber plate has a high correlation with temperature and humidity. When it is necessary to adjust them, manual application is required, which is very inconvenient in operation. Summary of the Invention

[0005] The purpose of the present invention is to provide a tensile strength testing device for carbon fiber plates to solve the problems raised in the above background technique.

[0006] To solve the above technical problems, the present invention provides the following technical solution: A tensile strength testing device for carbon fiber plates includes a stretching mechanism, a connecting plate, a clamping mechanism, and an adjusting mechanism. Both ends of the carbon fiber plate sample are fixed on the clamping mechanism. The clamping mechanism includes a set of clamps with the same structure and arranged corresponding to each other. The clamp on the upper side is fixedly connected to the connecting plate. One end of the connecting plate is fixed to the driving end of the stretching mechanism. The adjusting mechanism is installed on the connecting plate and arranged corresponding to the carbon fiber plate sample.

[0007] According to the above technical solution, the adjusting mechanism includes a lifting module, a feeding module, and an adjusting module. Among them, the feeding module is arranged at the driving end of the lifting module, and the adjusting module is arranged at the driving end of the feeding module. The lifting module and the feeding module are used to adjust the position of the adjusting module, and the adjusting module is used to control the temperature and humidity of the carbon fiber plate sample.

[0008] According to the above technical solution, the adjusting module includes a mounting frame. An outer cylinder is fixed on the mounting frame. A rotating cylinder is rotatably arranged on the mounting frame. The rotating cylinder is rotationally matched with the outer cylinder. An inner cylinder is arranged inside the rotating cylinder, and a water delivery pipe is penetrated inside the inner cylinder.

[0009] According to the above technical solution, the outer cylinder is a hollow shell with an opening on one side and is set as a semi-circular structure. An air delivery device is externally connected to the outer cylinder. The rotating cylinder is set as an arc structure larger than a semi-circle. The outer diameter of the rotating cylinder matches the inner diameter of the outer cylinder, and there is a distance between the rotating cylinder and the inner cylinder.

[0010] According to the above technical solution, a water tank is externally connected to the water delivery pipe. Several first partitions are arranged at intervals inside the inner cylinder. Each first partition divides the space inside the inner cylinder into independent areas. A number of nozzles are arranged on the water delivery pipe, and each nozzle corresponds to each independent area. The inner cylinder is provided with water outlets corresponding to each independent area, and the height of the water outlets is higher than the height of the closed side of the outer cylinder.

[0011] According to the above technical solution, a pressure sensing module is arranged on the surface of the outer cylinder, which is used to judge the width range of the carbon fiber board sample according to the detected pressure value.

[0012] According to the above technical solution, a rack is arranged on one side surface of the rotating cylinder. A first gear is arranged in cooperation with the rack, and the first gear is connected to a first driver.

[0013] According to the above technical solution, a liquid level sensing module is arranged on the inner wall of the inner cylinder, which is used to detect the height of the internal liquid.

[0014] According to the above technical solution, the lifting module includes a second driver, a first track, a first screw rod and a slider. The second driver is fixed on the connecting plate. The first track is fixed on the lower side of the connecting plate. One end of the first screw rod is connected to the driving end of the second driver, and the other end of the first screw rod is rotatably arranged in the first track. The slider is sleeved on the first screw rod and is in sliding cooperation with the first track.

[0015] According to the above technical solution, the feeding module includes a set of second screw rods, a second gear and a fourth driver. The second screw rods are rotatably arranged through the slider and one end of each second screw rod is connected to the mounting bracket through a bearing. The second gear is rotatably arranged on one side of the slider and is in cooperation with the second screw rods. The fourth driver is connected to the second gear.

[0016] According to the above technical solution, the fixture includes a fixed seat. A pressing rod is fixed on the fixed seat. A fifth driver is fixed on one side of the fixed seat. The driving end of the fifth driver is connected to a third screw rod. A moving frame is sleeved on one end of the third screw rod that penetrates through the fixed seat. A pressing block is fixed on the side of the moving frame facing the pressing rod. A number of sliding grooves for sliding the pressing block are arranged on the upper side surface of the fixed seat.

[0017] According to the above technical solution, the pressing block includes two side pressing blocks and one middle pressing block. The side pressing blocks are respectively fixedly connected to the moving frame, and an electromagnetic unit is laid on the connecting surface between the middle pressing block and the side pressing blocks.

[0018] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: In the present invention, by providing an adjustment module, the temperature and humidity of the carbon fiber board sample in the stretched state can be freely adjusted, which can meet the tensile tests under different conditions and has strong flexibility; by providing a feeding module, the adjustment module can be used as a lateral pressing tool to perform a springback test on the carbon fiber board sample during the stretching process, making the performance test more comprehensive. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the drawings: Figure 1 is a schematic diagram of the overall structure of the test device of the present invention; Figure 2 is a partial schematic diagram of the test device of the present invention; Figure 3 is a schematic diagram of the structure of the adjustment mechanism of the present invention; Figure 4 is a schematic diagram of the structure of the feeding module of the present invention; Figure 5 is a schematic diagram of the structure of the adjustment module of the present invention; Figure 6 is a transverse sectional view of the adjustment module of the present invention; Figure 7 is a longitudinal sectional view of the adjustment module of the present invention; Figure 8 is a schematic diagram of the structure of the fixture of the present invention; Figure 9 is a schematic diagram of the structure of the pressing block of the present invention; In the figure: 1. Tensile mechanism; 2. Connecting plate; 3. Clamping mechanism; 31. Fixed seat; 311. Sliding groove; 32. Pressing rod; 33. Driver Five; 34. Screw Three; 35. Moving frame; 36. Pressing block; 361. Side pressing block; 362. Intermediate pressing block; 4. Adjustment mechanism; 41. Lifting module; 411. Driver Two; 412. Rail One; 413. Screw One; 414. Slide block; 42. Feeding module; 421. Screw Two; 422. Gear Two; 423. Driver Four; 43. Adjustment module; 431. Mounting frame; 432. Outer cylinder; 4321. Pressure sensing module; 433. Rotating cylinder; 4331. Partition Two; 4332. Rack; 434. Inner cylinder; 4341. Partition One; 4342. Water outlet; 435. Water delivery pipe; 4351. Sprinkler head; 436. Air delivery device; 437. Water tank; 438. Gear One; 439. Driver One; 5. Carbon fiber board sample. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] Please refer to Figures 1-9 , the present invention provides a technical solution: a tensile strength test device for a carbon fiber board, including a tensile mechanism 1, a connecting plate 2, a clamping mechanism 3, and an adjusting mechanism 4. Both ends of the carbon fiber board sample 5 are fixed on the clamping mechanism 3. The clamping mechanism 3 includes a set of fixtures with the same structure and arranged corresponding to each other. The fixture on the upper side is fixedly connected to the connecting plate 2. One end of the connecting plate 2 is fixed to the driving end of the tensile mechanism 1. The adjusting mechanism 4 is installed on the connecting plate 2 and is arranged corresponding to the carbon fiber board sample 5; The adjusting mechanism 4 includes a lifting module 41, a feeding module 42, and an adjusting module 43. Among them, the feeding module 42 is arranged at the driving end of the lifting module 41, and the adjusting module 43 is arranged at the driving end of the feeding module 42. The lifting module 41 and the feeding module 42 are used to adjust the position of the adjusting module 43, and the adjusting module 43 is used to control the temperature and humidity of the carbon fiber board sample 5; Specifically, the adjusting module 43 includes a mounting frame 431. An outer cylinder 432 is fixed on the mounting frame 431. A rotating cylinder 433 is rotatably arranged on the mounting frame 431. The rotating cylinder 433 is rotationally matched with the outer cylinder 432. An inner cylinder 434 is arranged in the rotating cylinder 433, and a water delivery pipe 435 passes through the inner cylinder 434.

[0022] The supplementary description based on the above structure is as follows: As Figures 5-7 shown, the outer cylinder 432 is a hollow shell with one side open and is set as a semi-circular structure. The outer cylinder 432 is externally connected to an air delivery device 436. The rotating cylinder 433 is set as an arc structure larger than a semi-circle. The outer diameter of the rotating cylinder 433 matches the inner diameter of the outer cylinder 432. There is a certain distance between the rotating cylinder 433 and the inner cylinder 434. When the rotating cylinder 433 rotates to fit with the closed side of the outer cylinder 432, the outer cylinder 432 and the rotating cylinder 433 form a sealed cylinder isolated from the outside world. The outer cylinder 432 and the rotating cylinder 433 are air flow channels relative to the inner cylinder 434. When the rotating cylinder 433 rotates and separates from the closed side of the outer cylinder 432, an opening appears in the air flow channel, and the internal air flow is sprayed onto the carbon fiber board sample 5, and the temperature on the surface of the carbon fiber board sample 5 is adjusted according to the different air flow temperatures.

[0023] Further, a water tank 437 is externally connected to the water delivery pipe 435. A plurality of first partitions 4341 are arranged at intervals inside the inner cylinder 434. The spaces inside the inner cylinder 434 are divided into independent areas by the first partitions 4341. A number of nozzles 4351 are arranged on the water delivery pipe 435. Each nozzle 4351 corresponds to each independent area. The inner cylinder 434 is provided with water outlets 4342 corresponding to each independent area. The height of the water outlets 4342 is higher than the height of the closed side of the outer cylinder 432.

[0024] A pressure sensing module 4321 is arranged on the surface of the outer cylinder 432, and is used for judging the width range of the carbon fiber board sample 5 according to the detected pressure value range.

[0025] The supplementary description based on the above structure is as follows: According to the width of the carbon fiber board sample 5, the corresponding nozzles 4351 are opened to inject water into the corresponding space of the inner cylinder 434. When the rotating cylinder 433 and the outer cylinder 432 are opened, the water in the inner cylinder 434 overflows to the surface of the carbon fiber board sample 5 through the water outlets 4342, so as to realize the adjustment of its humidity.

[0026] Preferably, a second partition 4331 is arranged inside the rotating cylinder 433 corresponding to the first partition 4341 to divide the space inside the rotating cylinder 433.

[0027] In one embodiment, a rack 4332 is arranged on one side surface of the rotating cylinder 433. The rack 4332 is provided with a first gear 438 in cooperation. The first gear 438 is connected with a first driver 439.

[0028] In actual operation, the first driver 439 is driven to drive the first gear 438 to rotate, so as to drive the rotating cylinder 433 to rotate forward or backward, and finally realize the opening and closing between the rotating cylinder 433 and the outer cylinder 432.

[0029] Preferably, a liquid level sensing module is arranged on the inner wall of the inner cylinder 434 for detecting the height of the internal liquid.

[0030] As Figure 3 shown, the lifting module 41 includes a second driver 411, a first track 412, a first screw 413 and a slider 414. The second driver 411 is fixed on the connecting plate 2. The first track 412 is fixed on the lower side of the connecting plate 2. One end of the first screw 413 is connected with the driving end of the second driver 411. The other end of the first screw 413 is rotatably arranged in the first track 412. The slider 414 is sleeved on the first screw 413 and is in sliding fit with the first track 412.

[0031] As Figure 4As shown in the figure, the feeding module 42 includes a set of second screws 421, second gears 422 and fourth drivers 423. The second screw 421 is rotatably arranged through the slider 414 and one end thereof is connected to the mounting bracket 431 by bearings. The second gear 422 is rotatably arranged on one side of the slider 414 and is engaged with the second screw 421. The fourth driver 423 is connected to the second gear 422. It should be added that the second gear 422 is threadedly engaged with the second screw 421, so that the rotational motion of the second gear 422 can be converted into the linear motion of the second screw 421. This conversion is achieved through the interaction between the teeth of the gear and the threads of the screw.

[0032] In actual operation, the lifting module 41 drives the slider 414 to move up and down in the first track 412 in the form of motor screw drive. The fourth driver 423 drives the second gear 422 to rotate, so that the second screw 421 rotates synchronously. According to the different rotation directions of the second screw 421, the second screw 421 pulls back or pushes out the mounting bracket 431 relative to the slider 414, so that the mounting bracket 431 can be controlled to approach or move away from the carbon fiber board sample 5.

[0033] As Figure 8 shown in the figure, the fixture includes a fixed seat 31. A pressure bar 32 is fixed on the fixed seat 31. A fifth driver 33 is fixed on one side of the fixed seat 31. The driving end of the fifth driver 33 is connected to a third screw 34. One end of the third screw 34 passing through the fixed seat 31 is sleeved with a moving frame 35. A pressure block 36 is fixed on the side of the moving frame 35 facing the pressure bar 32. A plurality of chutes 311 for sliding the pressure block 36 are provided on the upper surface of the fixed seat 31.

[0034] Further, in one embodiment, as Figure 9 shown in the figure, the pressure block 36 includes two side pressure blocks 361 and an intermediate pressure block 362. The side pressure blocks 361 are respectively fixedly connected to the moving frame 35, and an electromagnetic unit is laid on the connecting surface between the intermediate pressure block 362 and the side pressure blocks 361.

[0035] The supplementary description based on the above structure is as follows: According to the connection state of the side pressing block 361 and the middle pressing block 362, the clamping position of the carbon fiber plate sample 5 can be adjusted. When the electromagnetic unit is not powered on, the side pressing block 361 and the middle pressing block 362 are in a separated state. At this time, the fifth driver 33 drives the third screw 34 to rotate, so that the moving frame 35 drives the two side pressing blocks 361 to move, realizing the clamping of both ends of one side of the carbon fiber plate sample 5. When the electromagnetic unit is powered on, the side pressing block 361 and the middle pressing block 362 are in a state of attracting each other. At this time, the fifth driver 33 drives the two side pressing blocks 361 to approach the middle pressing block 362, so that they adsorb to form a whole with each other, and then the driving block 36 is driven to approach the carbon fiber plate sample 5 to realize the clamping of both sides thereof. Thus, the clamping state of the carbon fiber plate sample 5, namely two-point stretching and plane stretching, can be changed by means of the clamping mechanism 3. By the method of respectively stretching and testing by changing the clamping state, it can be used to evaluate the tensile performance of the carbon fiber plate sample 5 in the case of uneven stress.

[0036] The stretching mechanism 1 adopts but is not limited to the form of motor-screw cooperation to drive the up-and-down movement of the connecting plate 2; preferably, a visual detection module is arranged on one side of the clamping mechanism 3 relative to the thickness of the carbon fiber plate sample 5 for detecting the deformation state of the thickness of the carbon fiber plate sample 5 during the stretching process; an infrared temperature measurement module is arranged on one side of the clamping mechanism 3 relative to the surface of the carbon fiber plate sample 5 for detecting the temperature value of the carbon fiber plate sample 5.

[0037] In Example 1, under the condition that other conditions remain unchanged, the stretching test steps are as follows: Step 1: Place the carbon fiber plate sample 5 into the fixture and fix it by the clamping mechanism 3; Step 2: The stretching mechanism 1 adjusts the height of the upper fixture, and in combination with the visual detection module, makes the surface of the carbon fiber plate sample 5 stretched to a flat state; Step 3: The visual detection module records the thickness of the carbon fiber plate sample 5 in the initial state, and the infrared temperature measurement module records the temperature value of the carbon fiber plate sample 5 in the initial state; Step 4: Start the stretching test. The stretching mechanism 1 pulls the carbon fiber plate sample 5 upward at a certain rate, and the visual detection module records its thickness deformation state; Step 5: Conduct a recovery test. The stretching mechanism 1 returns to the initial state, and the visual detection module records the thickness change of the carbon fiber plate sample 5, and compares the data before the test to evaluate the tensile performance of the carbon fiber plate sample 5.

[0038] Specifically, in step 2, the vision detection module pre-records the standard thickness value of the carbon fiber board sample 5, locks its position, punctuates the lateral position edges thereof, and during the process of adjusting the flat state, the vision detection module tracks the movement trajectories of the marked points. The marked points finally form two straight lines perpendicular to the horizontal plane, and the distance between the two marked lines is the thickness of the carbon fiber board sample 5. On the premise that the thickness of the carbon fiber board sample 5 is consistent, the vertical straight line composed of the marked points is used as the basis for judging whether the carbon fiber board sample 5 is in a flat state, and whether the distances between two marked points on the same horizontal plane are the same is used as the basis for judging whether the thickness of the carbon fiber board sample 5 is standard.

[0039] In step 5, after the stretching mechanism 1 is restored, the vision detection module re-punctuates the positions on both sides of the carbon fiber board sample 5, compares them with the positions of each point before stretching, and evaluates the recovery performance of the carbon fiber board sample 5 according to the position changes of each point.

[0040] Furthermore, in an ideal state, the marked points should be able to coincide with the initial positions before and after stretching, and the thickness at each horizontal height should be the same as the initial state. If the recovery performance of the carbon fiber board sample 5 is not ideal, the marked points will deviate from the initial marked points, and the thickness will be uneven.

[0041] Suppose there are a total of A marked points. The absolute value of the distance of the position change of the marked points before and after stretching is set as x, and an error margin a is set and a > 0. If 0 ≤ x ≤ a, it can be considered that the positions of the marked points coincide before and after stretching; if x > a, it is determined that the positions of the marked points deviate before and after stretching.

[0042] Based on the above judgment, the number B of offset points is counted. B is compared with the total number of points A, and the recovery performance of the carbon fiber board sample 5 is rated according to the offset quantity of the marked points, and the judgment limit is set artificially.

[0043] Example 2, on the basis of Example 1, temperature and humidity variables are added.

[0044] Specifically, only the temperature is adjusted. Before or during the stretching of the carbon fiber board sample 5, the adjusting mechanism 4 approaches the surface of the carbon fiber board sample 5. When the pressure sensing module 4321 detects the pressure value, it is determined that the adjusting module 43 has contacted the surface of the carbon fiber board sample 5. The rotating cylinder 433 rotates away from the outer cylinder 432, and the gas supply device 436 inputs a gas at a certain temperature into the air flow channel, and sprays it onto the surface of the carbon fiber board sample 5 from the opening of the rotating cylinder 433. The infrared temperature measurement module measures the temperature of the carbon fiber board sample 5 until the set temperature is reached, and the test steps of Example 1 are repeated.

[0045] Only adjust the humidity. The adjusting mechanism 4 approaches the surface of the carbon fiber board sample 5. According to the width value feedback by the pressure sensing module 4321, the required water injection area is determined, and the corresponding nozzle 4351 is opened to inject water into the independent area where it is located. At the same time, the rotating cylinder 433 is opened, and the water flows out through the water outlet 4342 to the surface of the carbon fiber board sample 5, thereby infiltrating the carbon fiber board sample 5 and adjusting its humidity.

[0046] On the basis of the above adjustment method, combinations are made according to actual needs to achieve flexible adjustment of temperature and humidity. For example: Combination ①, low temperature and low humidity. Water is injected into the corresponding independent area in the inner cylinder 434. After the liquid level sensing module detects that the internal liquid reaches the height of the water outlet 4342, the water injection stops. Low-temperature air flows into the air flow channel. First, the liquid in the inner cylinder 434 is cooled, and it is judged whether the liquid temperature reaches the set value according to the temperature feedback by the circulating gas. The rotating cylinder 433 is opened, the liquid overflows to the surface of the carbon fiber board sample 5, and at the same time, low-temperature gas is sprayed onto its surface.

[0047] Combination ②, low temperature and high humidity. On the basis of combination ①, water is continuously injected into the inner cylinder 434 until the set amount. The amount of water in the inner cylinder 434 that can contact the carbon fiber board sample 5 is equal to the total amount of water injected minus the total amount of water body below the height of the water outlet 4342. Based on this standard, the amount of water injected onto the surface of the carbon fiber board sample 5 is calculated.

[0048] Combination ③, high temperature and low humidity. On the basis of combination ①, the gas temperature is switched to the set high temperature value.

[0049] Combination ④, high temperature and high humidity. On the basis of combination ②, the gas temperature is switched to the set high temperature value.

[0050] Example 3. On the basis of Example 1, the resilience of the carbon fiber board sample 5 in the stretched state is tested with the help of the adjusting mechanism 4.

[0051] Specifically, the visual detection module records the position of the carbon fiber board sample 5 before propulsion (punctuating its side at a certain unit length interval), the adjusting module 43 is laterally advanced a certain distance towards the surface of the carbon fiber board sample 5, the visual detection module records the position of the carbon fiber board sample 5 again, the adjusting module 43 resets, and the visual detection module records the resilience state of the carbon fiber board sample 5. The resilience performance of the carbon fiber board sample 5 is evaluated according to the resilience speed and the degree of resilience.

[0052] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0053] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A tensile strength testing device for a carbon fiber board, comprising a tensile mechanism (1), a connecting plate (2), a clamping mechanism (3) and an adjusting mechanism (4), characterized in that, The two ends of the carbon fiber plate sample (5) are fixed on the clamping mechanism (3). The clamping mechanism (3) includes a set of fixtures with the same structure and arranged correspondingly. The fixture located on the upper side is fixedly connected to the connecting plate (2). One end of the connecting plate (2) is fixed to the driving end of the stretching mechanism (1). The adjusting mechanism (4) is installed on the connecting plate (2) and arranged corresponding to the carbon fiber plate sample (5). The adjusting mechanism (4) includes a lifting module (41), a feeding module (42), and an adjusting module (43). The feeding module (42) is arranged at the driving end of the lifting module (41), and the adjusting module (43) is arranged at the driving end of the feeding module (42). The lifting module (41) and the feeding module (42) are used to adjust the position of the adjusting module (43), and the adjusting module (43) is used to control the temperature and humidity of the carbon fiber plate sample (5). The adjusting module (43) includes a mounting frame (431). An outer cylinder (432) is fixed on the mounting frame (431). A rotating cylinder (433) is rotatably arranged on the mounting frame (431). The rotating cylinder (433) is rotationally matched with the outer cylinder (432). An inner cylinder (434) is arranged inside the rotating cylinder (433), and a water delivery pipe (435) passes through the inner cylinder (434). The outer cylinder (432) is a hollow shell with an opening on one side and is arranged in a semi-circular structure. The outer cylinder (432) is externally connected to an air delivery device (436). The rotating cylinder (433) is arranged in an arc structure larger than a semi-circle. The outer diameter of the rotating cylinder (433) matches the inner diameter of the outer cylinder (432). There is a certain distance between the rotating cylinder (433) and the inner cylinder (434).

2. The tensile strength testing device for a carbon fiber board according to claim 1, wherein The water delivery pipe (435) is externally connected to a water tank (437). Several partition plates one (4341) are arranged at intervals inside the inner cylinder (434). Each partition plate one (4341) divides the space inside the inner cylinder (434) into independent areas. A number of spray heads (4351) are arranged on the water delivery pipe (435). Each spray head (4351) corresponds to each independent area. The inner cylinder (434) is provided with water outlets (4342) corresponding to each independent area. The height of the water outlets (4342) is higher than the height of the closed side of the outer cylinder (432).

3. A tensile strength testing device for a carbon fiber plate according to claim 2, characterized in that, A pressure sensing module (4321) is arranged on the surface of the outer cylinder (432) for judging the width range of the carbon fiber plate sample (5) according to the detected pressure value.

4. A tensile strength testing device for a carbon fiber board according to claim 3, characterized in that, A rack (4332) is arranged on one side surface of the rotating cylinder (433). The rack (4332) is cooperatively provided with a gear one (438), and the gear one (438) is connected to a driver one (439).

5. The tensile strength testing device for a carbon fiber board according to claim 4, characterized in that, The lifting module (41) includes a second driver (411), a first rail (412), a first screw (413), and a slider (414). The second driver (411) is fixed on the connecting plate (2). The first rail (412) is fixed on the lower side of the connecting plate (2). One end of the first screw (413) is connected to the driving end of the second driver (411), and the other end of the first screw (413) is rotatably arranged in the first rail (412). The slider (414) is sleeved on the first screw (413) and is slidably matched with the first rail (412).

6. The tensile strength testing device for a carbon fiber board according to claim 5, wherein, The feeding module (42) includes a set of second screws (421), a second gear (422), and a fourth driver (423). The second screws (421) rotatably pass through the slider (414) and one end is connected to the mounting bracket (431) by a bearing. The second gear (422) is rotatably arranged on one side of the slider (414) and is engaged with the second screws (421). The fourth driver (423) is connected to the second gear (422).

7. The tensile strength testing device for a carbon fiber board according to claim 6, wherein, The fixture includes a fixed seat (31). A pressure rod (32) is fixed on the fixed seat (31). A fifth driver (33) is fixed on one side of the fixed seat (31). The driving end of the fifth driver (33) is connected to a third screw (34). One end of the third screw (34) passing through the fixed seat (31) is sleeved with a moving frame (35). A pressure block (36) is fixed on the side of the moving frame (35) facing the pressure rod (32). A plurality of chutes (311) for sliding the pressure block (36) are provided on the upper surface of the fixed seat (31).

8. The tensile strength testing device for a carbon fiber board according to claim 7, characterized in that, The pressure block (36) includes two side pressure blocks (361) and an intermediate pressure block (362). The side pressure blocks (361) are respectively fixedly connected to the moving frame (35). An electromagnetic unit is laid on the connecting surface of the intermediate pressure block (362) and the side pressure blocks (361).

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