Device and method for detecting toughness of fiber cloth based on different directions

Abstract

The invention relates to the technical field of toughness detection, in particular to a fiber cloth toughness detection device and method based on different orientations, the fiber cloth toughness detection device comprises a supporting table and a supporting plate fixed on the supporting table, a rotating assembly is arranged on the supporting plate, and a rotating plate is connected to the rotating assembly; the two-way traction mechanism is arranged on the rotating plate, a connecting plate is connected to the two-way traction mechanism, and a fixing plate is fixed to the connecting plate; the spacing regulation and control assembly is arranged on the fixed plate and comprises a fixed clamping plate and a rotating sleeve, an elastic clamping mechanism is arranged on the spacing regulation and control assembly, and the elastic clamping mechanism comprises a movable clamping plate; the rotating ring is fixed on the rotating sleeve, a second spiral groove is formed in the outer wall of the rotating ring, a movable sleeve axially slides on the rotating sleeve, a limiting column penetrating through the second spiral groove is fixed on the outer wall of the movable sleeve, and the elastic clamping mechanism is matched with the rotating sleeve, so that the clamping force on samples with different thicknesses is dynamically adjusted, and the accuracy of a detection result is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of toughness detection, and in particular to a fiber cloth toughness detection device and a detection method based on different orientations. Background Art

[0002] Fabrics are textiles made from natural or synthetic fibers and are widely used in industries such as industry, home furnishings, healthcare, and aerospace. The types and properties of fabrics vary depending on the fiber material, weaving process, and intended use.

[0003] The toughness of fiber cloth (i.e. its resistance to stretching, tearing and deformation) is one of the key indicators for evaluating its performance. Therefore, during the production of fiber cloth, samples need to be cut for tensile strength testing.

[0004] The existing testing method is to rigidly clamp the sample at both ends using a clamping workpiece and control the clamping workpiece to move away from each other to apply a tensile force to the sample until the sample breaks. However, if the test is performed directly using a rigid clamping method, localized excessive pressure is easily caused during the test, resulting in fiber breakage at the clamping edge, which in turn leads to deviations in the test data.

[0005] To this end, the test can be carried out by flexible clamping. During flexible clamping, by changing the compression amount of the spring, the required clamping force can be effectively provided to the sample to ensure the normal progress of the test.

[0006] However, when using existing flexible clamps for samples of different thicknesses, the spring compression that dominates the clamping force usually changes linearly. For thinner samples, the toughness is dominated by a few layers of fibers, and the fracture energy is low. The clamping force provided by the spring can meet the requirements. For thicker samples, the interaction between multiple layers of fibers results in less interlayer slippage, increased fiber pull-out energy consumption, and significantly increased fracture energy. This results in the clamping force provided by the spring being unable to meet the test requirements, resulting in relative sliding between the sample and the clamp during testing, leading to inaccurate test results. Summary of the Invention

[0007] The purpose of the present invention is to provide a fiber cloth toughness detection device and detection method based on different orientations to solve the problems raised in the above background technology.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] Fiber cloth toughness testing devices based on different orientations include:

[0010] A support platform, and a support plate fixed on the support platform, wherein a rotating assembly is provided on the support plate, and a rotating plate is connected to the rotating assembly;

[0011] Also includes:

[0012] A two-way pulling mechanism is provided on the rotating plate, the two-way pulling mechanism is connected to a connecting plate, and a fixing plate is fixed on the connecting plate;

[0013] A spacing control component is provided on the fixed plate, comprising a fixed clamping plate and a rotating sleeve. The spacing control component is provided with an elastic clamping mechanism, which comprises a movable clamping plate.

[0014] The rotating ring is fixed on the rotating sleeve, and a second spiral groove is formed on the outer wall of the rotating ring. A movable sleeve slides axially on the rotating sleeve, and a limiting column is fixed on the outer wall of the movable sleeve and passes through the second spiral groove. When the movable clamping plate performs a clamping action on the sample, the elastic clamping mechanism can drive the rotating sleeve to rotate, and control the movement of the movable sleeve through the second spiral groove and the limiting column to adjust the clamping force of the movable clamping plate on the sample.

[0015] As a further solution of the present invention: the bidirectional pulling mechanism includes a bidirectional screw rod rotatably mounted on the rotating plate, and the bidirectional screw rod is threadedly connected to a symmetrically arranged threaded sleeve;

[0016] It also includes a sliding component and a follower component arranged on the rotating plate for controlling the axial movement of the connecting plate along the bidirectional screw rod.

[0017] As a further solution of the present invention: the sliding assembly includes a first sliding groove formed on the rotating plate, a first sliding block fixedly connected to the threaded sleeve is slidably installed in the first sliding groove, and a movable plate is fixed to the side wall of the first sliding block.

[0018] As a further solution of the present invention: the follower assembly includes a supporting sleeve fixed on the movable plate, a movable rod slides axially in the supporting sleeve, a fixed ring is fixed to the end of the movable rod, a first spring is sleeved on the movable rod, and the two ends of the first spring are respectively in contact with the movable plate and the fixed ring.

[0019] As a further solution of the present invention: the spacing adjustment component includes a second slide groove formed on the fixed plate and symmetrically arranged, a second sliding block is slidably installed in the second slide groove, a receiving plate is fixed to the side wall of the second sliding block, the receiving plate is fixedly connected to the fixed clamping plate, and a double-headed cylinder fixedly connected to the second sliding block is fixed on the fixed plate.

[0020] As a further solution of the present invention: the elastic clamping mechanism includes a support rod that slides axially along the rotating sleeve and penetrates the receiving plate, the support rod is fixedly connected to the movable clamping plate, a guide groove is formed on the circumferential outer wall of the support rod, and a limit block is fixed on the inner wall of the rotating sleeve and is slidably engaged with the guide groove;

[0021] It also includes a guide assembly and a support assembly which are arranged on the receiving plate and connected to the support rod and are used to adjust the clamping force of the movable clamping plate.

[0022] As a further solution of the present invention: the guide assembly includes a guide column fixed on the receiving plate, and the guide column axially slides with a guide plate fixedly connected to the support rod.

[0023] As a further solution of the present invention: the support assembly includes a push plate that slides axially along the guide column and is fixedly connected to the movable sleeve, and a second spring is sleeved on the support rod, and the two ends of the second spring are respectively in contact with the push plate and the movable clamping plate.

[0024] As a further solution of the present invention: a loading platform for carrying samples is fixed on the support platform.

[0025] The fiber cloth toughness testing method based on different orientations includes the following steps:

[0026] Step 1: Place the sample on the stage with its edge extending beyond the stage;

[0027] Step 2: Under the action of the spacing control component, the elastic clamping mechanism is controlled to move so that the spacing between the fixed clamping plate and the movable clamping plate is reduced;

[0028] Step 3: After the fixed clamping plate and the movable clamping plate clamp the sample, the clamping force of the movable clamping plate on the sample is adjusted according to the thickness of the sample under the action of the elastic clamping mechanism;

[0029] Step 4: Under the action of the bidirectional pulling mechanism, the sample is pulled in both directions until the sample breaks;

[0030] Step 5: Rotate the assembly to adjust the angle of the rotating plate to adjust the test angle.

[0031] Compared with the prior art, the beneficial effect of the present invention is that: when the thickness of the sample changes, which causes its own toughness and the pulling force it can withstand to change drastically, the present application can automatically adjust the clamping force on the sample to ensure that the sample is effectively tested for pulling toughness. Specifically, when the sample is placed on the stage, under the action of the two-way pulling mechanism, the fixed clamping plate and the movable clamping plate are controlled to be located on both sides of the sample. Under the action of the spacing control component and the elastic clamping mechanism, the fixed clamping plate and the movable clamping plate move toward each other to perform a clamping action on the sample. During the clamping process, the elastic clamping mechanism can adaptively adjust the thrust exerted on the movable clamping plate according to the thickness of the sample to adaptively adjust the clamping force on the sample to ensure accurate sample test results.

[0032] After the toughness test in this direction is completed, the clamping angle of the movable clamping plate and the fixed clamping plate in the horizontal direction can be adjusted by the rotating component to perform toughness pulling tests on the sample in different directions, thereby realizing the test of the toughness strength of the sample in different longitude and latitude directions.

[0033] Through the cooperation of the guide groove and the limit block, when the sample thickness is small and the pulling force and clamping force it can withstand are small, the compression amount of the second spring can be controlled not to be too large, so as to ensure that the clamping force provided to the sample is within an appropriate range, avoiding the problem of fiber crushing due to concentrated clamping pressure; and when the sample thickness increases and the pulling force and clamping force it can withstand are significantly improved, the push plate can be controlled to move with the rotating sleeve while moving away from the rotating sleeve to accelerate the compression rate of the second spring, so that the compression amount of the second spring reaches the required amount, thereby ensuring that the clamping force on the sample is sufficient and that the sample can be pulled and torn smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 Schematic diagram of the structure of an embodiment of a fiber cloth toughness detection device based on different orientations.

[0035] Figure 2 Schematic diagram of the structure of another angle in the embodiment of the fiber cloth toughness detection device based on different orientations.

[0036] Figure 3 Schematic diagram of the connection relationship among the bidirectional pulling mechanism, the elastic clamping mechanism, and the spacing control component in an embodiment of the fiber cloth toughness detection device based on different orientations.

[0037] Figure 4 for Figure 3 A magnified schematic diagram of the structure at point A.

[0038] Figure 5 It is a structural schematic diagram of part of the rotating assembly, bidirectional pulling mechanism, spacing control assembly, and elastic clamping mechanism in an embodiment of a fiber cloth toughness detection device based on different orientations.

[0039] Figure 6 It is a structural schematic diagram of part of the rotating assembly, bidirectional pulling mechanism, elastic clamping mechanism, and movable clamping plate in an embodiment of a fiber cloth toughness detection device based on different orientations.

[0040] Figure 7 It is a structural schematic diagram of some bidirectional pulling mechanisms, spacing control components, elastic clamping mechanisms, and fixed clamping plates in an embodiment of a fiber cloth toughness detection device based on different orientations.

[0041] Figure 8 It is a structural schematic diagram of the spacing control component, elastic clamping mechanism, and movable clamping plate in an embodiment of a fiber cloth toughness detection device based on different orientations.

[0042] Figure 9 Schematic diagram of the exploded structure of the elastic clamping mechanism, rotating ring, and movable sleeve in an embodiment of the fiber cloth toughness detection device based on different orientations.

[0043] Figure 10 Schematic diagram of the exploded structure of part of the bidirectional pulling mechanism in the embodiment of the fiber cloth toughness detection device based on different orientations.

[0044] In the figure: 1, support platform; 2, support plate; 201, annular guide rail; 3, arc-shaped movable block; 4, rotating plate; 401, first slide; 5, motor; 6, transmission rod; 7, bidirectional screw rod; 8, threaded sleeve; 9, first sliding block; 10, movable plate; 11, support sleeve; 12, movable rod; 1201, fixing ring; 13, first spring; 14, connecting plate; 15, fixing plate; 1501, second slide; 1 6. Second sliding block; 17. Double-headed cylinder; 18. Adapter plate; 19. Fixed clamping plate; 20. Rotating sleeve; 2001. Limit block; 21. Support rod; 2101. Straight groove; 2102. First spiral groove; 22. Movable clamping plate; 23. Guide column; 24. Guide plate; 25. Push plate; 26. Second spring; 27. Rotating ring; 2701. Second spiral groove; 28. Movable sleeve; 29. ​​Limit column. DETAILED DESCRIPTION

[0045] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0046] In addition, when an element in the present invention is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0047] See also Figures 1 to 10 In an embodiment of the present invention, a fiber cloth toughness detection device based on different orientations includes:

[0048] A support platform 1 and a support plate 2 fixed on the support platform 1, a rotating assembly is provided on the support plate 2, and a rotating plate 4 is connected to the rotating assembly, wherein the rotating assembly includes an annular guide rail 201 formed on the support plate 2, an arc-shaped movable block 3 fixedly connected to the rotating plate 4 is slidably installed in the annular guide rail 201, a motor 5 is fixed on the support plate 2, and a transmission rod 6 connected to the output shaft of the motor 5 and fixedly connected to the rotating plate 4 is rotatably installed on the support plate 2;

[0049] Also includes:

[0050] A two-way pulling mechanism is provided on the rotating plate 4, a connecting plate 14 is connected to the two-way pulling mechanism, and a fixing plate 15 is fixed to the connecting plate 14;

[0051] The spacing control component is provided on the fixed plate 15 and includes a fixed clamping plate 19 and a rotating sleeve 20. The spacing control component is provided with an elastic clamping mechanism, which includes a movable clamping plate 22.

[0052] The rotating ring 27 is fixed on the rotating sleeve 20, and a second spiral groove 2701 is formed on the outer wall of the rotating ring 27. A movable sleeve 28 is axially slidable on the rotating sleeve 20, and a limiting column 29 is fixed on the outer wall of the movable sleeve 28 and passes through the second spiral groove 2701. When the movable clamping plate 22 performs a clamping action on the sample, the elastic clamping mechanism can drive the rotating sleeve 20 to rotate, and control the movement of the movable sleeve 28 through the second spiral groove 2701 and the limiting column 29 to adjust the clamping force of the movable clamping plate 22 on the sample.

[0053] A loading platform for carrying samples is fixed on the support platform 1 .

[0054] Specifically, when conducting tensile toughness tests on samples of the same material but different thicknesses, the fiber cloth can be cut into circular samples, and the sample size is larger than the stage size. To this end, when the sample is placed on the stage, its edge extends out of the stage. At this time, under the action of the bidirectional pulling mechanism, the two groups of movable clamping plates 22 and the fixed clamping plates 19 are controlled by the spacing control component and the elastic clamping mechanism to move toward each other until the spacing between the two fixed clamping plates 19 is smaller than the sample size and larger than the stage size. Under the action of the spacing control component, the fixed clamping plates 19 and the movable clamping plates 22 are controlled by the elastic clamping mechanism to move toward each other. When the fixed clamping plate 19 is in contact with one side of the sample, the movable clamping plate 22 will be in contact with the other side of the sample. At this time, the fixed clamping plate 19 continues to move and is clamped by the elastic clamping mechanism. The sample drives the movable clamping plate 22 to move synchronously, so that the sample is separated from the stage. At the same time, the clamping force of the movable clamping plate 22 on the sample is increased by the elastic clamping mechanism. The elastic clamping mechanism also drives the rotating sleeve 20 to rotate, thereby driving the rotating ring 27 to rotate. Under the action of the second spiral groove 2701 and the limiting column 29, the movable sleeve 28 is driven to slide axially along the rotating sleeve 20 to further increase the clamping force of the sample according to the thickness of the sample. When the clamping is completed, under the action of the two-way pulling mechanism, the two groups of movable clamping plates 22 and the fixed clamping plate 19 are controlled to move in directions away from each other to pull the sample until the sample breaks. At this time, the sample can be replaced, and under the action of the rotating component, the clamping angle of the sample can be adjusted, and the above steps are repeated to realize pulling testing of the sample from different directions.

[0055] See also Figure 1-Figure 3 、 Figure 5-Figure 7 、 Figure 10 The two-way pulling mechanism includes a two-way screw rod 7 rotatably mounted on the rotating plate 4, and the two-way screw rod 7 is threadedly connected to a symmetrically arranged threaded sleeve 8; it also includes a sliding assembly and a follower assembly arranged on the rotating plate 4 for controlling the axial movement of the connecting plate 14 along the two-way screw rod 7, the sliding assembly includes a first sliding groove 401 formed on the rotating plate 4, a first sliding block 9 fixedly connected to the threaded sleeve 8 is slidably mounted in the first sliding groove 401, and a movable plate 10 is fixed to the side wall of the first sliding block 9, the follower assembly includes a supporting sleeve 11 fixed on the movable plate 10, a movable rod 12 is axially slidable in the supporting sleeve 11, a fixing ring 1201 is fixed at the end of the movable rod 12, and a first spring 13 is sleeved on the movable rod 12, and the two ends of the first spring 13 are respectively in contact with the movable plate 10 and the fixing ring 1201.

[0056] In detail, a pressure sensor is provided on the movable plate 10, which can detect the change of the elastic potential energy of the first spring 13 in real time to detect the toughness of the sample. In the initial state, the two threaded sleeves 8 are located at the end of the stroke in the direction of moving away from each other, so that the distance between the two movable plates 10 is the largest. The elongation of the first spring 13 in the natural state is greater than the maximum elongation of the movable rod 12 extending out of the movable plate 10. In this regard, the first spring 13 is in a pre-compressed state and always provides a thrust to the movable rod 12 in the direction away from the movable plate 10 through the fixing ring 1201. At this time, the distance between the connecting plate 14 and the movable plate 10 is the smallest. A keyway is formed on the inner wall of the support sleeve 11, and a key that cooperates with the keyway is fixed on the outer wall of the movable rod 12. Under the action of the key and the keyway, the movable rod 12 can only slide along the axial direction of the support sleeve 11;

[0057] When it is necessary to clamp the sample, the bidirectional screw 7 rotates and drives the threaded sleeve 8 to move, thereby driving the two first sliding blocks 9 to move along the length direction of the first sliding groove 401, and the two first sliding blocks 9 move in the direction of approaching each other. The first sliding block 9 and the first sliding groove 401 have a guiding function, which can ensure that the threaded sleeve 8 moves along the length direction of the bidirectional screw 7 and will not rotate with the bidirectional screw 7. The first sliding block 9 will also drive the movable rod 12 to move through the movable plate 10, and drive the fixed plate 15 to move through the connecting plate 14, so as to control the movable clamping plate 22 and the fixed clamping plate 19 to move in the direction of approaching each other through the spacing control component and the elastic clamping mechanism. When the spacing between the two movable clamping plates 22 is smaller than the sample size and larger than the stage spacing, the bidirectional screw 7 stops rotating;

[0058] When the movable clamping plate 22 and the fixed clamping plate 19 fix the sample, the bidirectional screw 7 reverses and controls the two threaded sleeves 8 to move in the direction away from each other to increase the distance between the two movable plates 10. Since the fixed clamping plate 19 and the movable clamping plate 22 fix the sample, the positions of the fixed clamping plate 19 and the movable clamping plate 22 will not change, and the positions of the fixed plate 15 and the connecting plate 14 will not change. Therefore, the position of the movable rod 12 remains unchanged, and the movable plate 10 is in a continuous motion state. Therefore, the first spring 13 will continue to be compressed, so that the pulling force of the fixed clamping plate 19 and the movable clamping plate 22 on the sample continues to increase until the sample breaks. At this time, the first spring 13 is elastically released, so that the distance between the movable rod 12 and the movable plate 10 returns to the initial state. The pressure sensor can record the maximum pulling force before the sample breaks to ensure that the sample toughness test results are accurate.

[0059] When the sample inspection in this orientation is completed, the transmission rod 6 can be controlled to rotate by the motor 5, thereby driving the arc-shaped movable block 3 to slide along the annular guide rail 201 through the rotating plate 4, so that the clamping position of the movable clamping plate 22 and the fixed clamping plate 19 is changed, and the above steps are repeated to perform tensile toughness tests on samples in different orientations.

[0060] See also Figure 1-Figure 3 、 Figure 5-Figure 8 The spacing control component includes a second slide groove 1501 formed on the fixed plate 15 and symmetrically arranged, and a second sliding block 16 is slidably installed in the second slide groove 1501. A receiving plate 18 is fixed to the side wall of the second sliding block 16. The receiving plate 18 is fixedly connected to the fixed clamping plate 19, and a double-headed cylinder 17 fixedly connected to the second sliding block 16 is fixed on the fixed plate 15.

[0061] See also Figures 1-9 The spring 26 is provided on the support rod 21, and the two ends of the second spring 26 respectively abut against the push plate 25 and the movable clamping plate 22.

[0062] See also Figure 9, further, the guide groove is divided into two sections, namely the straight groove 2101 and the first spiral groove 2102. The angle formed by the first spiral groove 2102 in the circumferential direction of the support rod 21 is the same as the angle formed by the second spiral groove 2701 in the circumferential direction of the rotating ring 27. When the limit block 2001 is located at the end of the stroke of the straight groove 2101 away from the first spiral groove 2102, the support rod 21 extends out of the rotating sleeve 20 to the maximum extent, so that the distance between the movable clamping plate 22 and the push plate 25 is maximized, and the elongation of the second spring 26 in the natural state is greater than the distance. Therefore, the second spring 26 is in a pre-compressed state and always provides a thrust to the push plate 25 and the movable clamping plate 22 in the direction of moving away from each other. Under the action of the push plate 25, the distance between the movable sleeve 28 and the movable clamping plate 22 is maximized, so that the limit post 29 is located at the end of the stroke of the second spiral groove 2701 away from the movable clamping plate 22.

[0063] In the initial state, under the action of the double-headed cylinder 17, the second sliding block 16 is located at the end of its stroke on one side of the second slide groove 1501, and the distance between the two second sliding blocks 16 is maximized. At this time, the fixed clamping plate 19 and the movable clamping plate 22 are at the same distance from the corresponding receiving plate 18. Therefore, the fixed clamping plate 19 and the movable clamping plate 22 are at the same distance from the center position of the fixed plate 15, and the loading surface of the loading platform coincides with the horizontal center reference plane of the fixed plate 15.

[0064] Among them, the double-headed cylinder 17 can be replaced with a hydraulic cylinder or an electric telescopic cylinder according to usage requirements, and this application does not limit it.

[0065] When the sample needs to be clamped, the double-headed cylinder 17 starts working and drives the two second sliding blocks 16 to slide radially along the second slide groove 1501 and move toward each other, thereby driving the fixed clamping plate 19 and the support rod 21 to move through the receiving plate 18, so that the fixed clamping plate 19 and the movable clamping plate 22 move toward each other;

[0066] When the movable clamping plate 22 is in contact with one side of the sample, the fixed clamping plate 19 is about to be in contact with the sample, and the double-headed cylinder 17 continues to move until the fixed clamping plate 19 and the movable clamping plate 22 clamp the two sides of the sample. At this time, the fixed clamping plate 19 continues to move, and the movable clamping plate 22 is controlled by the sample to follow the fixed clamping plate 19 to move synchronously, so that the sample is separated from the stage, and the rotating sleeve 20 is in a continuous movement toward the fixed clamping plate 19. To this end, the size of the mutual fit between the rotating sleeve 20 and the support rod 21 gradually increases, so that the limit block 2001 slides along the straight groove 2101. Under the action of the limit block 2001 and the straight groove 2101, it is ensured that the rotating sleeve 20 does not rotate. Therefore, the distance between the push plate 25 and the movable clamping plate 22 gradually decreases to compress the second spring 26, so that the clamping force of the sample is gradually increased;

[0067] Since the double-headed cylinder 17 maintains the same extension and contraction amount each time when clamping, when the sample thickness is small and the double-headed cylinder 17 stops moving, the limit block 2001 is still located in the straight groove 2101, and the push plate 25 moves synchronously with the rotating sleeve 20, thereby achieving the required compression amount of the second spring 26, and the compression amount of the second spring 26 is not too large. Therefore, when the sample thickness is small and the toughness is low, sufficient clamping force can be provided for testing, while preventing the problem of excessive clamping force causing the clamping position to be torn;

[0068] When the sample is thicker, its own toughness is greater, and the pulling force it can withstand is also higher. For this reason, a stronger clamping force is required to ensure that the sample can be pulled and torn smoothly. When the extension and contraction amount of the double-headed cylinder 17 remains unchanged, the final position of the fixed clamping plate 19 remains unchanged. Under the action of the sample, the size of the support rod 21 inserted into the rotating sleeve 20 increases. When the support rod 21 moves, it also drives the guide plate 24 to slide along the axial direction of the guide column 23. Under the action of the guide plate 24 and the guide column 23, it can be ensured that the support rod 21 will not rotate. When the limit block 2001 disengages from the straight groove 2101 and enters the first When in a spiral groove 2102, the rotating sleeve 20 will rotate, thereby driving the rotating ring 27 to rotate synchronously. Under the action of the second spiral groove 2701 and the limit column 29, the movable sleeve 28 slides along the axial direction of the rotating sleeve 20 and moves toward the direction close to the movable clamping plate 22 to drive the push plate 25 to move. In this way, the movement rate of the push plate 25 is further accelerated, so that the distance between the push plate 25 and the movable clamping plate 22 is rapidly reduced, so as to increase the compression rate of the second spring 26, thereby quickly increasing the clamping force provided to the sample by the movable clamping plate 22 to meet the test requirements.

[0069] Preferably, through the cooperation of the guide groove and the limit block 2001, when the sample thickness is small and the pulling force and clamping force it can withstand are small, the compression amount of the second spring 26 can be controlled not to be too large, so as to ensure that the clamping force provided to the sample is within an appropriate range, avoiding the problem of fiber crushing due to concentrated clamping pressure; and when the sample thickness increases and the pulling force and clamping force it can withstand are significantly improved, the push plate 25 can be controlled to move with the rotating sleeve 20 while moving itself in the direction away from the rotating sleeve 20 to accelerate the compression rate of the second spring 26, so that the compression amount of the second spring 26 reaches the required amount, thereby realizing adaptive adjustment of the clamping force of the sample according to the change of sample thickness, to ensure that the clamping force of the sample is sufficient, and to ensure that the sample can be pulled and torn smoothly.

[0070] The fiber cloth toughness testing method based on different orientations includes the following steps:

[0071] Step 1: Place the sample on the stage with its edge extending beyond the stage;

[0072] Step 2: Under the action of the spacing control component, the elastic clamping mechanism is controlled to move so that the spacing between the fixed clamping plate 19 and the movable clamping plate 22 is reduced;

[0073] Step 3: After the fixed clamping plate 19 and the movable clamping plate 22 clamp the sample, the clamping force of the movable clamping plate 22 is adjusted according to the thickness of the sample under the action of the elastic clamping mechanism;

[0074] Step 4: Under the action of the bidirectional pulling mechanism, the sample is pulled in both directions until the sample breaks;

[0075] Step 5: Rotate the assembly to adjust the angle of the rotating plate 4 to adjust the test angle.

[0076] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0077] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. Fiber cloth toughness testing device based on different orientations, including: A support platform, and a support plate fixed on the support platform, wherein a rotating assembly is provided on the support plate, and a rotating plate is connected to the rotating assembly; It is characterized by further comprising: A two-way pulling mechanism is provided on the rotating plate, the two-way pulling mechanism is connected to a connecting plate, and a fixing plate is fixed on the connecting plate; A spacing control component is provided on the fixed plate, comprising a fixed clamping plate and a rotating sleeve. The spacing control component is provided with an elastic clamping mechanism, which comprises a movable clamping plate. The rotating ring is fixed on the rotating sleeve, and a second spiral groove is formed on the outer wall of the rotating ring. A movable sleeve slides axially on the rotating sleeve, and a limiting column is fixed on the outer wall of the movable sleeve and passes through the second spiral groove. When the movable clamping plate performs a clamping action on the sample, the elastic clamping mechanism can drive the rotating sleeve to rotate, and control the movement of the movable sleeve through the second spiral groove and the limiting column to adjust the clamping force of the movable clamping plate on the sample.

2. The fiber cloth toughness detection device based on different orientations according to claim 1, characterized in that: The bidirectional pulling mechanism includes a bidirectional screw rod rotatably mounted on the rotating plate, and a symmetrically arranged threaded sleeve is threadedly connected to the bidirectional screw rod; It also includes a sliding component and a follower component arranged on the rotating plate for controlling the axial movement of the connecting plate along the bidirectional screw rod.

3. The fiber cloth toughness detection device based on different orientations according to claim 2, characterized in that: The sliding assembly includes a first sliding groove formed on the rotating plate, a first sliding block fixedly connected to the threaded sleeve is slidably installed in the first sliding groove, and a movable plate is fixed to the side wall of the first sliding block.

4. The fiber cloth toughness detection device based on different orientations according to claim 3 is characterized in that: The follower assembly includes a supporting sleeve fixed on the movable plate, a movable rod axially sliding in the supporting sleeve, a fixed ring fixed to the end of the movable rod, a first spring sleeved on the movable rod, and two ends of the first spring respectively abut against the movable plate and the fixed ring.

5. The fiber cloth toughness detection device based on different orientations according to claim 1, characterized in that: The spacing adjustment component includes a second slide groove formed on the fixed plate and symmetrically arranged, a second sliding block is slidably installed in the second slide groove, a receiving plate is fixed to the side wall of the second sliding block, the receiving plate is fixedly connected to the fixed clamping plate, and a double-headed cylinder fixedly connected to the second sliding block is fixed on the fixed plate.

6. The fiber cloth toughness detection device based on different orientations according to claim 5, characterized in that: The elastic clamping mechanism includes a support rod that slides axially along the rotating sleeve and penetrates the receiving plate, the support rod is fixedly connected to the movable clamping plate, a guide groove is formed on the circumferential outer wall of the support rod, and a limit block is fixed on the inner wall of the rotating sleeve to slide and engage with the guide groove; It also includes a guide assembly and a support assembly which are arranged on the receiving plate and connected to the support rod and are used to adjust the clamping force of the movable clamping plate.

7. The fiber cloth toughness detection device based on different orientations according to claim 6, characterized in that: The guide assembly includes a guide column fixed on the receiving plate, and the guide column axially slides with a guide plate fixedly connected to the support rod.

8. The fiber cloth toughness detection device based on different orientations according to claim 7, characterized in that: The support assembly includes a push plate that slides axially along the guide column and is fixedly connected to the movable sleeve. A second spring is sleeved on the support rod, and two ends of the second spring are respectively in contact with the push plate and the movable clamping plate.

9. The fiber cloth toughness detection device based on different orientations according to claim 1, characterized in that: A loading platform for carrying samples is fixed on the support platform.

10. A method for detecting the toughness of a fiber cloth based on different orientations, using a device for detecting the toughness of a fiber cloth based on different orientations as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: Place the sample on the stage with its edge extending beyond the stage; Step 2: Under the action of the spacing control component, the elastic clamping mechanism is controlled to move so that the spacing between the fixed clamping plate and the movable clamping plate is reduced; Step 3: After the fixed clamping plate and the movable clamping plate clamp the sample, the clamping force of the movable clamping plate on the sample is adjusted according to the thickness of the sample under the action of the elastic clamping mechanism; Step 4: Under the action of the bidirectional pulling mechanism, the sample is pulled in both directions until the sample breaks; Step 5: Rotate the assembly to adjust the angle of the rotating plate to adjust the test angle.

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