Fiber strength and elongation instrument holder

Abstract

The utility model relates to the field of fiber material testing, in particular to a fiber strength and elongation instrument holder which comprises a clamping device and a shearing device, the clamping device comprises a first clamping structure and a second clamping structure, and the first clamping structure and the second clamping structure are used for clamping fibers in a matched mode so that the fibers can be stretched in the first direction and reach target stress; the shearing device comprises two groups of moving structures and shearing structures arranged corresponding to the moving structures, the two groups of moving structures are symmetrically arranged by taking the fiber in the stretching state as the axis, the first ends of the moving structures are arranged on the first clamping structure, and the second ends of the moving structures are connected with the corresponding shearing structures; the moving structures are used for driving the corresponding shearing structures to move, so that the two shearing structures move relatively, and the fibers reaching the target stress are sheared. By means of the design, stable contact between the shearing device and fibers is guaranteed, the accuracy of a test result is improved, and meanwhile manpower resources are saved.

Description

Technical Field

[0001] The present application relates to the field of fiber material testing, and in particular to a fiber strength and elongation tester clamp. Background Art

[0002] Fiber materials have the advantages of high specific strength, large specific modulus, good corrosion resistance and good durability, so they are increasingly widely used in various transportation equipment, building components and electronic equipment. As an important parameter of fiber, compression strength is usually measured using a fiber strength and elongation tester using the tensile rebound method.

[0003] However, in the current measurement process, the fiber filaments that have been stretched to the preset stress need to be manually cut. Therefore, it is difficult to ensure stable contact between the blade and the fiber filaments during the shearing process, which leads to uneven force on the fiber filaments and non-zero initial rebound velocity of the fracture, affecting the accuracy of the test results. Utility Model Content

[0004] In order to solve the above technical problems, the present application provides a fiber strength and elongation tester clamp, which improves the accuracy of the test results while saving human resources.

[0005] According to some embodiments, the present application provides a fiber tensile tester holder, comprising:

[0006] A clamping device, the clamping device comprising a first clamping structure and a second clamping structure, the first clamping structure and the second clamping structure are used to cooperate to clamp the fiber so that the fiber is stretched along a first direction and reaches a target stress;

[0007] A shearing device, comprising two groups of moving structures and shearing structures corresponding to the moving structures, the two groups of moving structures being symmetrically arranged with the fiber in a stretched state as an axis, the first end of the moving structure being arranged on the first clamping structure, the second end of the moving structure being connected to the corresponding shearing structure, the moving structure being used to drive the corresponding shearing structure to move so that the two shearing structures move relative to each other, thereby shearing the fiber that reaches the target stress.

[0008] In some embodiments of the present application, each group of the moving structures includes a guide structure and a moving rod, the moving rod extends along the first direction, the first end of the moving rod is slidably connected to the guide structure, and the guide structure is used to guide the movement of the moving rod along a second direction, and the second direction is perpendicular to the first direction;

[0009] The shear structure is disposed on the second end of the moving rod.

[0010] In some embodiments of the present application, the guiding structure includes a plurality of axes which are parallel to each other and whose axes are parallel to the second direction; a support plate is provided on the first surface of the first clamping structure, the support plate is perpendicular to the first surface, the first end of each of the axes is fixed to the support plate, a plurality of axial holes are provided on the first end of the movable rod, the plurality of axes correspond one-to-one to the plurality of axial holes, and the axis passes through the axial holes.

[0011] In some embodiments of the present application, the movable structure further includes a spring, which is disposed between two adjacent axes and parallel to the axes, wherein a first end of the spring is fixedly disposed on the support plate, and a second end of the spring is connected to the movable rod.

[0012] In some embodiments of the present application, the shearing structure includes a blade and a clamp block, the clamp block is connected to the movable rod, the clamp block extends along the second direction, the blade is fixed in the middle of the clamp block, and the plane where the blade is located is perpendicular to the extension direction of the fiber.

[0013] In some embodiments of the present application, the shearing structure further includes a fastener, the clamp block is provided with a mounting hole extending along the first direction, the fastener passes through the mounting hole, and the fastener is used to fix the blade to the clamp block.

[0014] In some embodiments of the present application, the fiber strength and elongation meter holder also includes a controller and a driving device, the controller is electrically connected to the driving device; the driving device is connected to the two moving rods, and the driving device is used to drive the two moving rods to move relative to each other.

[0015] In some embodiments of the present application, the driving device includes a compression pump, a pressure regulating valve and two solenoid valves, the compression pump is connected to the pressure regulating valve, the pressure regulating valve is connected to the two solenoid valves, the two solenoid valves are respectively connected to the two moving rods, and the controller is electrically connected to the two solenoid valves.

[0016] In some embodiments of the present application, the first clamping structure includes a first clamping block, a second clamping block and a first fixing block, the first clamping block is fixed to the second surface of the first fixing block, the second clamping block is slidably connected to the first fixing block, and the first clamping block and the second clamping block cooperate to clamp the first end of the fiber;

[0017] The second clamping structure comprises a third clamping block, a fourth clamping block and a second fixing block, the third clamping block is fixed on the third surface of the second fixing block, the fourth clamping block is slidably connected to the second fixing block, and the third clamping block and the fourth clamping block cooperate to clamp the second end of the fiber;

[0018] Wherein, the second surface of the first fixing block is opposite to the third surface of the second fixing block.

[0019] In some embodiments of the present application, the second clamping structure is connected to a lifting platform, and the lifting platform is used to drive the second clamping structure to move up and down.

[0020] The fiber tensile tester holder provided in this application can achieve the following beneficial technical effects:

[0021] The fiber strength and elongation meter clamp provided in the present application clamps the fiber and stretches the fiber to a target stress by setting a first clamping structure and a second clamping structure, and sets two groups of moving structures on the first clamping structure, and the two groups of moving structures drive the corresponding shearing structures to move relative to each other, thereby realizing the shearing of the fiber that has been stretched to the target stress, ensuring the stable contact between the shearing structure and the fiber monofilament, and avoiding the situation where the fracture deviates from the middle, which is easy to occur in manual shearing, thereby improving the accuracy of the fiber compression strength measurement results. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings herein are incorporated into the specification and constitute a part of the specification to illustrate embodiments of the present application and are used together with the description to explain the principles of the present application. In these drawings, similar reference numerals are used to represent similar elements. The drawings described below are some embodiments of the present application, rather than all embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a structural schematic diagram of a fiber strength and elongation tester holder shown in one embodiment of the present application.

[0024] Reference numerals:

[0025] 10. Fiber;

[0026] 100, clamping device; 110, first clamping structure; 1110, first surface; 1120, first clamping block; 1130, second clamping block; 1140, first fixing block; 1141, second surface; 120, second clamping structure; 1210, third clamping block; 1220, fourth clamping block; 1230, second fixing block; 1231, third surface;

[0027] 200, shearing device; 210, moving structure; 2110, guide structure; 2111, shaft; 2120, moving rod; 2121, shaft hole; 2130, spring; 220, shearing structure; 2210, blade; 2220, clamping block; 2221, mounting hole; 2230, fastener;

[0028] 300, support plate;

[0029] 400, controller;

[0030] 500, driving device; 510, compression pump; 520, pressure regulating valve; 530, solenoid valve;

[0031] 600. Lifting platform. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application. It should be noted that, in the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other arbitrarily.

[0033] The fiber tensile tester is an experimental instrument for measuring the tensile properties of fibers. The fiber tensile tester clamp is an important part of the fiber tensile tester, which is used to clamp and stretch fibers. Since the tensile rebound method is simple to prepare samples and has no fiber interface problems, the tensile rebound method is usually used to measure the compressive strength of fibers. The compressive strength refers to the maximum compressive stress that the sample withstands until it breaks (brittle materials) or yields (non-brittle materials) in the compression test.

[0034] The tensile rebound method is used to measure the compressive strength of fiber monofilaments. The basis for this is the mechanical characteristic that the tensile strength of the fiber is significantly higher than the compressive strength. During the test, a pre-tensioning tension is applied to the fiber to make it in a tensile state, and then the fiber is instantly broken from the middle under the action of electric sparks or shear force. Under the action of the pre-tensioning stress energy release, the elastic strain energy is converted into kinetic energy, prompting the two broken ends of the fiber to move toward the ends of the clamping position, and then converted back into compressive strain energy after encountering the clamping fixed end. This method assumes that the anti-impact compressive stress on the fiber fracture surface is the same as the pre-tensioning tension. By changing the pre-tensioning tension, the compressive stress is regulated. When the compressive stress is greater than the intrinsic compressive strength of the fiber, the pre-tensioning tension when the carbon fiber is crushed is the upper limit of the compressive strength of the fiber.

[0035] At present, manual operation is usually adopted to shear the limit stretched to the target stress. In order to solve the problem that manual shearing of fibers leads to uneven force on the fibers and thus leads to inaccurate compression strength measurement results, the embodiment of the present application provides a fiber strength and elongation meter clamp, which clamps the fibers by setting a first clamping structure and a second clamping structure to stretch the fibers to reach the target stress, and sets two groups of moving structures on the first clamping structure. The two groups of moving structures drive the corresponding shearing structures to move relative to each other, thereby realizing the shearing of the fibers that have been stretched to the target stress, ensuring the stable contact between the shearing structure and the fiber monofilament, and then realizing the accurate measurement of the compression strength of the fibers.

[0036] The fiber strength and elongation tester holder provided by the present application is described in detail below in conjunction with the accompanying drawings.

[0037] It should be noted that Figure 1 The y-axis direction in is the first direction, which is also the vertical direction; Figure 1 The x-axis direction in is the second direction.

[0038] An exemplary embodiment of the present application provides a fiber tensile tester holder, such as Figure 1 As shown, the fiber strength and tensile tester clamp includes a clamping device 100 and a shearing device 200. The clamping device 100 includes a first clamping structure 110 and a second clamping structure 120. The first clamping structure 110 and the second clamping structure 120 are arranged at intervals in the vertical direction. The first clamping structure 110 and the second clamping structure 120 cooperate to clamp the fiber 10 so that the fiber 10 extends along the first direction and keeps the fiber 10 in a tensioned state.

[0039] The shearing device 200 includes two groups of moving structures 210 and two groups of shearing structures 220. The two groups of moving structures 210 and the two groups of shearing structures 220 are symmetrically arranged with the fiber 10 in a tensioned state as the axis; the first end of the moving structure 210 is arranged on the first clamping structure 110, and the second end of the moving structure 210 is connected to the corresponding shearing structure 220. The two groups of moving structures 210 respectively drive the corresponding shearing structures 220 to move relative to each other to achieve shearing of the fiber 10.

[0040] It should be noted that the fiber 10 in this embodiment is a fiber monofilament, and its material can be carbon fiber, glass fiber, ceramic fiber, polyester fiber, etc., which is not limited here.

[0041] The process of shearing the fiber 10 using the fiber tensile tester holder is as follows:

[0042] The first clamping structure 110 and the second clamping structure 120 are both in an open state, and the first end of the fiber 10 is placed on the first clamping structure 110, and the first clamping structure 110 clamps the first end of the fiber 10, so that the fiber 10 naturally droops under the action of gravity. When the fiber 10 naturally droops, the second end of the fiber 10 is clamped by the second clamping structure 120; the first clamping structure 110 and the second clamping structure 120 cooperate to stretch the fiber 10 along the first direction, and the stretching is stopped after the target stress is reached. During this process, the two groups of shear structures 220 are in a separated state, that is, they are far away from each other in the x-axis direction.

[0043] After the fiber 10 reaches the target stress, the two groups of movable structures 210 respectively drive the shear structure 220 connected thereto, so that the shear structure 220 moves relatively in the direction of the x-axis 2111. Since the two groups of movable structures 210 and the two groups of shear structures 220 are designed symmetrically with the fiber 10 as the axis, the two groups of shear structures 220 simultaneously contact the fiber 10 that has reached the target stress, thereby achieving shearing.

[0044] Since the fiber 10 needs to have a pre-stress before being stretched to ensure that the fiber 10 is evenly stressed during the stretching process, in this embodiment, the gravity exerted on the fiber 10 is used as its pre-stress, which facilitates the operation of technicians.

[0045] In this embodiment, the first clamping structure 110 and the second clamping structure 120 are provided to clamp the fiber 10 and stretch the fiber 10 to reach the target stress, and two groups of movable structures 210 are provided on the first clamping structure 110. The two groups of movable structures 210 drive the respective corresponding shearing structures 220 to move relative to each other, thereby achieving shearing of the fiber 10 that has been stretched to the target stress, ensuring stable contact between the shearing structure 220 and the single filament of the fiber 10, and further achieving accurate measurement of the compressive strength of the fiber 10.

[0046] In some embodiments, Figure 1 As shown, each group of moving structures 210 includes a guiding structure 2110 and a moving rod 2120. The guiding structure 2110 is arranged on the first clamping structure 110. The moving rod 2120 extends along the first direction. The first end of the moving rod 2120 is slidingly connected to the guiding structure 2110. The second end of the moving rod 2120 is connected to the shear structure 220. The guiding structure 2110 is used to guide the movement of the moving rod 2120 along the second direction.

[0047] By providing the guide structure 2110 to guide the movement of the moving rod 2120, the smooth movement of the shearing structure 220 is achieved, thereby ensuring the stable contact between the shearing structure 220 and the monofilament of the fiber 10, thereby improving the accuracy of the measurement result.

[0048] In some embodiments, continue to refer to Figure 1 The support plate 300 is mounted on the first surface 1110 of the first clamping structure 110, and the plane where the support plate 300 is located is perpendicular to the first surface 1110; the guide structure 2110 includes a plurality of shafts 2111 extending along the second direction, the plurality of shafts 2111 are parallel to each other, and the first ends of the plurality of shafts 2111 are fixed to the support plate 300; a plurality of shaft holes 2121 are arranged on the first end of the mobile rod 2120, and the shaft holes 2121 are arranged one by one with the shafts 2111, and the shafts 2111 pass through the corresponding shaft holes 2121 on the mobile rod 2120. In this embodiment, two shafts 2111 are arranged in each group of guide structures 2110, and in other embodiments, a plurality of shafts 2111 may be arranged. Through such a simple structure of the shafts 2111 and the shaft holes 2121, the stable guidance of the mobile rod 2120 is achieved.

[0049] In some embodiments, Figure 1 As shown, the mobile structure 210 further includes a spring 2130, which is disposed between two adjacent shafts 2111, the axis of the spring 2130 is parallel to the axis of the shaft 2111, the first end of the spring 2130 is fixed to the support plate 300, and the second end of the spring 2130 is fixed to the first end of the mobile rod 2120 through a connecting block. In this embodiment, since two shafts 2111 are provided, there is one spring 2130 and it is disposed between the two shafts 2111. In other embodiments, if three shafts 2111 are provided, two springs 2130 are provided, and the two springs 2130 are respectively disposed between two adjacent shafts 2111.

[0050] By arranging the spring 2130 between two adjacent shafts 2111, before the moving rod 2120 starts to move, the spring 2130 is in a natural state, and when the moving rod 2120 drives the shearing structure 220 to approach the fiber 10, the spring 2130 is in a compressed state. When the shearing is completed, the force acting on the moving rod 2120 disappears, and the spring 2130 is pushed to return to its original position during the process of returning from the compressed state to the natural state. In addition, in the direction of the x-axis 2111, the length of the spring 2130 in the natural state is smaller than the length of the shaft 2111, so as to prevent the moving rod 2120 from being pushed away from the shaft 2111 by the elastic force of the spring 2130.

[0051] In some embodiments, Figure 1 As shown, the shearing structure 220 includes a blade 2210 and a clamping block 2220, the clamping block 2220 extends along the second direction, the first end of the clamping block 2220 is connected to the moving rod 2120, and the second end of the clamping block 2220 is used to fix the blade 2210. The blade 2210 is clamped on the clamping block 2220 so that the plane where the blade 2210 is located is perpendicular to the first direction.

[0052] In some embodiments, Figure 1 As shown, the shear structure 220 further includes a fastener 2230, a mounting hole 2221 is provided on the clamp block 2220, and a corresponding through hole is also provided at a corresponding position of the blade 2210, and the fastener 2230 passes through the mounting hole 2221 of the clamp block 2220 and the through hole on the blade 2210 to fix the blade 2210 on the clamp block 2220. The fastener 2230 may be, for example, a bolt and a nut.

[0053] By setting the clamp block 2220 and the fastener 2230, and setting the mounting hole 2221 on the clamp block 2220, the blade 2210 is easily replaced, ensuring that the blade 2210 is in a sharp state, and the fiber 10 can be cut instantly when shearing the fiber 10, thereby improving the accuracy of the measurement result.

[0054] In some embodiments, reference Figure 1 The fiber tensile tester holder also includes a controller 400 and a driving device 500. The driving device 500 is connected to the two moving rods 2120 to drive the moving rods 2120 to move; the controller 400 is electrically connected to the driving device 500 to control the opening and closing of the driving device 500.

[0055] In some embodiments, the driving device 500 includes a compression pump 510, a pressure regulating valve 520 and two solenoid valves 530, wherein the compression pump 510 is used to pressurize the air; the pressure regulating valve 520 is a flow and pressure regulating control device for stabilizing the pressure; the solenoid valve 530 is a valve body that uses the electromagnetic principle to control the fluid system, and the working principle is based on the electromagnetic induction phenomenon. When the electromagnetic coil is passed with current, a magnetic field will be generated. This magnetic field will attract the iron core to move the iron core, thereby controlling the on and off of the liquid or gas in the pipeline.

[0056] like Figure 1 As shown, the compression pump 510 is connected to the pressure regulating valve 520 , the pressure regulating valve 520 is respectively connected to two solenoid valves 530 , the two solenoid valves 530 are respectively connected to the two moving rods 2120 , and both of the two solenoid valves 530 are electrically connected to the controller 400 .

[0057] The working process of the driving device 500 in this embodiment is as follows: the compression pump 510 pressurizes the air and pumps it into the pressure regulating valve 520, and the pressure regulating valve 520 regulates the pressure of the pressurized air to stabilize it. When the controller 400 controls the solenoid valve 530 to open, it can generate a smooth thrust on the moving rod 2120, thereby making the blade 2210 move smoothly until the shearing of the fiber 10 is completed.

[0058] In some embodiments, the first clamping structure 110 includes a first clamping block 1120, a second clamping block 1130 and a first fixing block 1140, the first clamping block 1120 is fixed on the second surface 1141 of the first fixing block 1140, the second clamping block 1130 is slidably connected to the first fixing block 1140, and the first clamping block 1120 and the second clamping block 1130 cooperate to clamp the first end of the fiber 10; the second clamping structure 120 includes a third clamping block 1210, a fourth clamping block 1220 and a second fixing block 1230, The third clamping block 1210 is fixed on the third surface 1231 of the second fixing block 1230, and the fourth clamping block 1220 is slidably connected to the second fixing block 1230. The third clamping block 1210 and the fourth clamping block 1220 cooperate to clamp the second end of the fiber 10; wherein, the second surface 1141 of the first fixing block 1140 is opposite to the third surface 1231 of the second fixing block 1230, and the first clamping block 1120 and the third clamping block 1210 are arranged opposite to each other in the first direction so that the clamped fiber 10 extends along the first direction.

[0059] In this embodiment, the second clamping block 1130 and the fourth clamping block 1220 are movable in the second direction, and their movement may be driven by pneumatic drive or electric drive, etc. By setting the clamping blocks, the fiber 10 is clamped.

[0060] In some embodiments, the second clamping structure 120 is connected to the lifting platform 600 so that the second clamping structure 120 can move up and down in the first direction. The fiber 10 is stretched by the movement of the second clamping structure 120 in the first direction.

[0061] It should be noted that in the present application, the position where the fiber 10 stretched to the target stress is cut, that is, the fracture of the fiber 10, should be located in the middle of the entire fiber 10 in the stretched state, that is, half of the distance between the opposite surfaces of the first clamping block 1120 and the third clamping block 1210, which is also the position where the plane where the blade 2210 is located should be located. The position of the blade 2210 can be achieved by changing the length of the moving rod 2120 in the first direction.

[0062] The process of shearing the fiber 10 by the fiber tensile tester holder is as follows:

[0063] Before the test starts, in the second direction, the second clamping block 1130 and the first clamping block 1120 are not in contact, and the fourth clamping block 1220 and the third clamping block 1210 are not in contact. The first end of the fiber 10 is placed on the first clamping block 1120, and the second clamping block 1130 is controlled to move toward the first clamping block 1120 until the first end of the fiber 10 is clamped. The fiber 10 is allowed to droop naturally under the action of gravity. When the fiber 10 droops naturally, the second end of the fiber 10 is placed on the third clamping block 1210, and the fourth clamping block 1220 is controlled to move toward the third clamping block 1210 until the second end of the fiber 10 is clamped. The clamping of the fiber 10 is completed.

[0064] The lifting platform 600 drives the second clamping block 1130 to move downward, and the fiber 10 is stretched. The stress of the fiber 10 is monitored in real time by a sensor. The sensor is connected to a display device, and the display device displays the stress of the fiber 10. When the target stress is reached, the operator stops the movement of the lifting platform 600. When the fiber 10 reaches the target stress, the lifting platform 600 stops, and the stretching of the fiber 10 is completed.

[0065] The length of the moving rod 2120 is adjusted so that the blade 2210 is located in the middle of the stretched fiber 10, and the compression pump 510 and the pressure regulating valve 520 are started. The two solenoid valves 530 are started through the controller 400, and the pressurized air pushes the two moving rods 2120 to move relative to each other, driving the two blades 2210 to move relative to each other. The spring 2130 changes from a natural state to a compressed state. After the technician observes that the blade 2210 has completed the shearing of the fiber 10, the solenoid valve 530 is closed through the controller 400 to stop the supply of air pressure. The two blades 2210 are separated under the elastic force of the spring 2130, and the moving rod 2120 returns to its original position. The shearing of the fiber 10 is completed.

[0066] The fiber strength and elongation meter holder provided in this embodiment, through the setting of the shear structure 220, does not need to be manually performed during the shearing process, thereby ensuring that the fracture can be located at one-half of the entire fiber 10, and also ensuring stable contact between the blade 2210 and the fiber 10, saving labor costs while reducing the errors in the measurement results caused by uncontrollable manual operations, thereby improving the accuracy of the measurement results.

[0067] The contents described above may be implemented individually or in combination in various ways, and these variations are all within the protection scope of this application.

[0068] It should be noted that, in the description of the present application, the terms "upper", "lower", "front", "back", etc., indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present application.

[0069] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0070] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0071] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0072] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0073] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A fiber strength and elongation tester holder, characterized in that: The fiber tensile tester holder comprises: A clamping device, the clamping device comprising a first clamping structure and a second clamping structure, the first clamping structure and the second clamping structure are used to cooperate to clamp the fiber so that the fiber is stretched along a first direction and reaches a target stress; A shearing device, comprising two groups of moving structures and shearing structures corresponding to the moving structures, the two groups of moving structures being symmetrically arranged with the fiber in a stretched state as an axis, the first end of the moving structure being arranged on the first clamping structure, the second end of the moving structure being connected to the corresponding shearing structure, the moving structure being used to drive the corresponding shearing structure to move so that the two shearing structures move relative to each other, thereby shearing the fiber that reaches the target stress.

2. The fiber tensile tester holder according to claim 1, characterized in that: Each group of the moving structures comprises a guide structure and a moving rod, the moving rod extends along the first direction, the first end of the moving rod is slidably connected to the guide structure, and the guide structure is used to guide the movement of the moving rod along a second direction, the second direction being perpendicular to the first direction; The shear structure is disposed on the second end of the moving rod.

3. The fiber tensile tester holder according to claim 2, characterized in that: The guiding structure includes a plurality of shafts which are parallel to each other and whose axes are parallel to the second direction. A support plate is arranged on the first surface of the first clamping structure, and the support plate is perpendicular to the first surface. The first end of each shaft is fixed to the support plate. A plurality of shaft holes are arranged on the first end of the movable rod, and the plurality of shafts correspond to the plurality of shaft holes one by one, and the shafts pass through the shaft holes.

4. The fiber tensile tester holder according to claim 3, characterized in that: The moving structure further comprises a spring, which is arranged between two adjacent shafts and parallel to the shafts, wherein a first end of the spring is fixedly arranged on the supporting plate, and a second end of the spring is connected to the moving rod.

5. The fiber tensile tester holder according to claim 2, characterized in that: The shearing structure comprises a blade and a clamping block, wherein the clamping block is connected to the moving rod and extends along the second direction. The blade is fixed in the middle of the clamping block, and the plane where the blade is located is perpendicular to the extension direction of the fiber.

6. The fiber tensile tester holder according to claim 5, characterized in that: The shearing structure further includes a fastener. The clamping block is provided with a mounting hole extending along the first direction. The fastener passes through the mounting hole. The fastener is used to fix the blade to the clamping block.

7. The fiber tensile tester holder according to claim 2, characterized in that: The fiber strength and elongation tester holder also includes a controller and a driving device, wherein the controller is electrically connected to the driving device; the driving device is connected to the two moving rods, and the driving device is used to drive the two moving rods to move relative to each other.

8. The fiber tensile tester holder according to claim 7, characterized in that: The driving device includes a compression pump, a pressure regulating valve and two solenoid valves, the compression pump is connected to the pressure regulating valve, the pressure regulating valve is connected to the two solenoid valves, the two solenoid valves are respectively connected to the two moving rods, and the controller is electrically connected to the two solenoid valves.

9. The fiber tensile tester holder according to claim 1, characterized in that: The first clamping structure comprises a first clamping block, a second clamping block and a first fixing block, the first clamping block is fixed on the second surface of the first fixing block, the second clamping block is slidably connected to the first fixing block, and the first clamping block and the second clamping block cooperate to clamp the first end of the fiber; The second clamping structure comprises a third clamping block, a fourth clamping block and a second fixing block, the third clamping block is fixed on the third surface of the second fixing block, the fourth clamping block is slidably connected to the second fixing block, and the third clamping block and the fourth clamping block cooperate to clamp the second end of the fiber; Wherein, the second surface of the first fixing block is opposite to the third surface of the second fixing block.

10. The fiber tensile tester holder according to claim 1, characterized in that: The second clamping structure is connected to a lifting platform, and the lifting platform is used to drive the second clamping structure to move up and down.

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