Bending recovery performance testing device

Abstract

The utility model relates to the technical field of composite materials, in particular to a bending recovery performance testing device which comprises a base, a clamping module and a bending module, the clamping module comprises a supporting table and a clamping piece, the bottom face of the supporting table is fixedly connected with the base, the clamping piece is arranged on the top face of the supporting table, and the bending module is arranged on the base. The clamping piece and the supporting table are used for fixing one end part of a to-be-tested sample, and a preset side wall surface of the supporting table forms a supporting surface; the bending module is in sliding connection with the base so as to be close to or away from the preset side wall surface, and the bending module moves towards the supporting table so that the to-be-tested sample can be bent to be attached to the supporting surface. Through the design, the supporting table can be matched with the clamping piece to clamp the to-be-tested sample and can also be matched with the bending module to bend the to-be-tested sample, the structure is simple, and meanwhile the bending recovery performance of the to-be-tested sample can be tested through simple operation.

Description

Technical Field

[0001] This application relates to the field of composite materials technology, and in particular to a bending recovery performance testing device. Background Technology

[0002] Prepreg is an intermediate material in the manufacture of composite materials. The performance of prepreg largely determines the performance of the composite materials it is made from. The flexural recovery performance of prepreg refers to its ability to return to its original shape after being bent under external force, which is an important parameter affecting the performance of prepreg.

[0003] There is an urgent need for a simple device specifically designed for testing the bending recovery performance of prepregs. Utility Model Content

[0004] To address the aforementioned technical problems, this application provides a bending recovery performance testing device that is simple in structure and easy to operate.

[0005] According to some embodiments, this application provides a bending recovery performance testing device, which includes:

[0006] Base;

[0007] The clamping module includes a support platform and a clamping member. The bottom surface of the support platform is fixedly connected to the base, and the clamping member is disposed on the top surface of the support platform. The clamping member and the support platform are used to fix one end of the sample to be tested, and the preset side wall surface of the support platform forms a support surface.

[0008] The bending module is slidably connected to the base so as to be able to approach or move away from the preset side wall. The bending module moves toward the support platform so that the sample to be tested is bent to fit against the support surface.

[0009] In some embodiments of this application, a guide rail is provided on the base, the guide rail extends in a horizontal direction, and the bending module is slidably connected to the guide rail.

[0010] In some embodiments of this application, the bending module includes:

[0011] The slider is slidably connected to the guide rail;

[0012] A pressure plate is connected to the slider, and the plane of the pressure plate is parallel to the preset side wall surface.

[0013] In some embodiments of this application, in the height direction of the base, the top surface of the pressure plate is higher than the top surface of the support platform.

[0014] In some embodiments of this application, the width of the pressure plate is greater than or equal to the width of the support platform in the width direction of the base.

[0015] In some embodiments of this application, the surface of the pressure plate that faces the preset sidewall is a smooth plane.

[0016] In some embodiments of this application, the connection surface between the top surface of the support platform and the preset side wall surface has a rounded corner structure.

[0017] In some embodiments of this application, the bending recovery performance testing device further includes a first scale and a second scale. The first scale is disposed on the top surface of the support platform and extends in the horizontal direction, and the second scale is disposed on the preset side wall surface and extends in the vertical direction.

[0018] In some embodiments of this application, the bending recovery performance testing device further includes two third scales, which are disposed opposite to each other on the base along the width direction of the base, and both third scales extend in the horizontal direction.

[0019] In some embodiments of this application, the top surface of the support platform is provided with a threaded hole, the clamping member is provided with a through hole, and the fastener passes through the through hole and cooperates with the threaded hole to clamp the sample to be tested.

[0020] The bending recovery performance testing device provided in this application can achieve the following beneficial technical effects:

[0021] The bending recovery performance testing device provided in this application clamps one end of the sample to be tested by setting a clamping module including a support platform and clamping components. By setting a bending module that is slidably connected to the base and cooperating with the support platform, the bending of the sample to be tested is realized. The structure is simple, easy to operate, and improves the testing efficiency and accuracy of bending recovery performance. Attached Figure Description

[0022] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the present application and, together with the description, serve to explain the principles of the application. In these drawings, similar reference numerals are used to denote similar elements. The drawings described below are some embodiments of the present application, but not all embodiments. Other drawings will be readily available to those skilled in the art based on these drawings without any inventive effort.

[0023] Figure 1 This is a front view of a bending recovery performance testing device shown in an embodiment of this application;

[0024] Figure 2 yes Figure 1 Side view of the bending recovery performance testing device;

[0025] Figure 3yes Figure 1 Top view of the bending recovery performance testing device.

[0026] Figure label:

[0027] 100. Base; 110. Guide rail; 120. Third scale;

[0028] 200 Clamping module; 210 Support platform; 2110 Preset side wall; 220 Clamping component; 230 Fastener;

[0029] 300, Bending module; 310, Slider; 320, Pressure plate. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be arbitrarily combined with each other.

[0031] The flexural recovery property of prepregs indicates their ability to return to their original shape after being subjected to external forces, i.e., their ability to repair damage after bending. It is an important parameter representing the performance of prepregs. Understanding the flexural recovery property of prepregs can provide a basis for optimizing production processes and improving product quality and performance. However, there is currently no dedicated device for testing the flexural recovery property of prepregs.

[0032] To address the aforementioned issues, this application provides a bending recovery performance testing device. A clamping module, comprising a support platform and clamping components, clamps one end of the sample to be tested. A bending module, slidably connected to a base, works in conjunction with the support platform to bend the sample. The device features a simple structure, is easy to operate, and improves the testing efficiency and accuracy of bending recovery performance.

[0033] The bending recovery performance testing apparatus provided in this application will now be described in detail with reference to the accompanying drawings.

[0034] It should be noted that, Figures 1 to 3 The x-axis direction is the horizontal direction, which is also the length direction of the base 100; the y-axis direction is the width direction of the base 100; and the z-axis direction is the vertical direction, which is also the height direction of the base 100.

[0035] An exemplary embodiment of this application provides a bending recovery performance testing apparatus, such as... Figures 1 to 3 As shown, the bending recovery performance testing device includes a base 100, a clamping module 200, and a bending module 300. The clamping module 200 includes a support platform 210 and a clamping member 220. The bottom surface of the support platform 210 is fixed on the base 100, and the clamping member 220 is disposed on the top surface of the support platform 210. The clamping member 220 and the support platform 210 cooperate to clamp one end of the sample to be tested. The bending module 300 is slidably connected to the base 100 so that it can move horizontally, approach or move away from the preset side wall surface 2110. When the bending module 300 moves toward the support platform 210, it can bend the sample to be tested to fit against the support surface. The preset side wall surface 2110 of the support platform 210 forms the support surface for the sample to be tested.

[0036] The bending recovery performance testing device in this embodiment is used as follows: One end of the sample to be tested is clamped between the clamping member 220 and the support platform 210. At this time, the bending module 300 is not in contact with the sample to be tested, and the unclamped end of the sample hangs down naturally under the action of gravity. The bending module 300 is slid towards the preset side wall 2110, and the bending module 300 contacts the naturally hanging end of the sample to be tested. The distance between the preset side wall 2110 and the bending module 300 in the x-axis direction is recorded as follows. L; Continue to slide the bending module 300 towards the preset side wall 2110, bending the sample to be tested until it fits against the preset side wall 2110. After a set time period, move the bending module 300 away from the preset side wall 2110. The sample to be tested will recover. At this time, slide the bending module 300 until it contacts the naturally drooping end. Record the distance M between the preset side wall 2110 and the bending module 300 in the x-axis direction at this time. The bending recovery rate P of the sample to be tested is P = M / L * 100%.

[0037] In this embodiment, a clamping module 200, including a support platform 210 and a clamping member 220, is used to clamp one end of the sample to be tested. A bending module 300, which is slidably connected to the base 100, cooperates with the support platform 210 to bend the sample to be tested. The bending module 300 can also be used to determine the end position of the sample to be tested when measuring distance. The structure is simple, easy to operate, and improves the testing efficiency of bending recovery performance.

[0038] In some embodiments, such as Figure 1 As shown, guide rails 110 are respectively provided on both sides of the base 100. The guide rails 110 extend in the horizontal direction, that is, the length direction of the base 100. The bending module 300 is slidably connected to the guide rails 110 on both sides of the base 100. The guide rails 110 play a guiding role in the sliding of the bending module 300.

[0039] In some embodiments, continue to refer to Figure 1The bending module 300 includes a slider 310 and a pressure plate 320. The slider 310 is slidably connected to the guide rail 110, and the pressure plate 320 is disposed on the slider 310. The plane of the pressure plate 320 is parallel to the preset side wall 2110 of the support platform 210. By setting the pressure plate 320 to cooperate with the support platform 210, the force applied to the prepreg can be more uniform, ensuring the accuracy of the test results.

[0040] In some embodiments, such as Figure 1 As shown, in the height direction of the base 100 (i.e., the z-axis direction in the figure), the top surface of the pressure plate 320 is higher than the top surface of the support platform 210. With this design, when the bending module 300 begins to bend the sample to be tested, even if the degree of natural drooping of the unclamped end of the prepreg is relatively low, it can still ensure that the pressure plate 320 is in contact with the prepreg. This ensures that the sample to be tested can be bent directly by moving the bending module 300, without the need for external force to assist in the deformation of the sample to be tested (such as manual downward pressing) to ensure that the sample to be tested is in contact with the pressure plate 320.

[0041] In some embodiments, continue to refer to Figure 3 In the width direction of the base 100 (i.e., the y-axis direction in the figure), the width of the pressure plate 320 is greater than or equal to the width of the support platform 210. This design ensures that the entire portion of the sample under test in the width direction is subjected to the interaction force between the pressure plate 320 and the preset side wall 2110, thereby achieving bending and ensuring the accuracy of the test results.

[0042] In some embodiments, such as Figure 1 As shown, the side of the pressure plate 320 that faces the preset side wall 2110 is a smooth plane, and the preset side wall 2110 is also a smooth plane. This ensures that the sample under test is only bent at the corner of the support platform 210, and not at other locations, thus ensuring the accuracy of the bending recovery rate calculation.

[0043] In some embodiments, such as Figure 1 As shown, the connection surface between the top surface of the support platform 210 and the preset side wall surface 2110 has a rounded corner structure. When bending the sample to be tested, the rounded corner structure of the connection surface can ensure that the sample to be tested does not develop creases while performing bending recovery performance testing, and the sample to be tested can be used directly afterwards, saving costs.

[0044] In some embodiments, such as Figure 1 As shown, the bending recovery performance testing device also includes a first scale and a second scale. The first scale is set on the top surface of the support platform 210, and the second scale is set on the preset side wall 2110 of the support platform 210. The first scale extends along the x-axis direction, and the second scale extends along the z-axis direction.

[0045] By setting the first and second scales, the lengths of the clamped end and the bent end of the sample can be determined more accurately. This facilitates variable control when testing multiple samples and ensures the accuracy of the test results. Additionally, a fourth scale can be set at the connection surface of the rounded corner structure; this is not limited here.

[0046] In some embodiments, continue to refer to Figure 1 The bending recovery performance testing device also includes two third scales 120, which are arranged opposite each other on the base 100 along the width direction of the base 100, and both third scales 120 extend horizontally. By setting the third scales 120, the length of the sample before and after bending can be determined by the position of the pressure plate 320 opposite to the preset side wall surface 2110, which is simple in structure.

[0047] In another embodiment, displacement sensors can be set on the pressure plate 320 and the preset side wall surface 2110 to measure the length of the sample before and after bending. Those skilled in the art can set it according to actual needs, and all of them are within the protection scope of this application.

[0048] In some embodiments, such as Figures 1 to 3 As shown, the top surface of the support platform 210 is provided with a threaded hole, and the clamping member 220 has a cuboid structure with a through hole. The fastener 230 passes through the through hole and engages with the threaded hole on the support platform 210 to clamp the sample to be tested. At least one fastener 230 is provided; in this embodiment, two fasteners 230 are provided. Correspondingly, two threaded holes and two through holes are also provided at intervals along the y-axis. During clamping, the sample to be tested can be placed between the two threaded holes on the support platform 210, and then the clamping member 220 is placed on the sample, aligning the through hole on the clamping member 220 with the threaded hole on the support platform 210, and then fixed by the fastener 230.

[0049] In some embodiments, continue to refer to Figure 1 The slider 310 can slide and connect with the slide rail, and can also be engaged with the slide rail. Therefore, when the sample to be tested is bent for a preset time period, the pressure plate 320 can continuously apply force to the sample. The engagement between the slider 310 and the slide rail can be achieved through a locking device, or other structures, which are not limited here.

[0050] In some embodiments, continue to refer to Figure 1 The length of the prepreg in the x-axis direction is at least greater than the length of the support 210 in the x-axis direction to ensure sufficient length for bending; the width of the prepreg in the y-axis direction is less than the width of the support 210 in the y-axis direction to ensure that the fastener 230 can fit with the threaded hole through the through hole.

[0051] The process of testing the bending recovery rate of prepreg using the above-mentioned bending recovery performance testing device is as follows:

[0052] Step 1: Clamping. Place one end of the sample to be tested between the two threaded holes on the support platform 210, and then place the clamping component 220 on the sample to be tested, aligning the through hole on the clamping component 220 with the threaded hole on the support platform 210, and fix it with the fastener 230 to achieve clamping; at this time, the unclamped end of the sample to be tested hangs down naturally under the action of gravity, and the bending module 300 does not contact the sample to be tested.

[0053] Step 2: Bending. Slide the pressure plate 320 towards the preset side wall 2110, so that the bending module 300 contacts the naturally drooping end of the sample to be tested. Read and record the distance L between the preset side wall 2110 and the plane containing the pressure plate 320 in the x-axis direction using the third scale 120. Continue to slide the pressure plate 320 towards the preset side wall 2110, bending the sample to be tested until it fits against the preset side wall 2110. After fixing the position of the pressure plate 320 with the locking device for a set time period, move the bending module 300 away from the preset side wall 2110 by a length greater than L, and wait for the sample to recover.

[0054] Step 3: Calculate the bending recovery rate. After the sample recovers, slide the pressure plate 320 until it contacts the naturally drooping end, and record the distance M between the preset side wall surface 2110 and the plane where the pressure plate 320 is located in the x-axis direction; the bending recovery rate P of the sample is P = M / L * 100%.

[0055] Step 4: Repeat the above steps to obtain the bending recovery rate of multiple test samples in the same batch of products, calculate the average, and the final average value represents the bending recovery performance of the prepreg in that batch.

[0056] The bending recovery performance testing device provided in this application clamps one end of the sample to be tested by setting a clamping module 200 including a support platform 210 and a clamping member 220. By setting a bending module 300 slidably connected to the base 100, it cooperates with the support platform 210 to achieve bending of the sample to be tested. The bending module 300 can also play a role in determining the end position of the sample to be tested when measuring distance. The structure is simple, easy to operate, and improves the testing efficiency of bending recovery performance.

[0057] The above-described contents can be implemented individually or in various combinations, and these variations are all within the scope of protection of this application.

[0058] It should be noted that in the description of this application, the terms "upper", "lower", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0059] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0060] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0061] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0062] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A bending recovery performance testing device, characterized in that, include: Base; The clamping module includes a support platform and a clamping member. The bottom surface of the support platform is fixedly connected to the base, and the clamping member is disposed on the top surface of the support platform. The clamping member and the support platform are used to fix one end of the sample to be tested, and the preset side wall surface of the support platform forms a support surface. The bending module is slidably connected to the base so as to be able to approach or move away from the preset side wall. The bending module moves toward the support platform so that the sample to be tested is bent to fit against the support surface.

2. The bending recovery performance testing device according to claim 1, characterized in that, The base is provided with a guide rail that extends horizontally, and the bending module is slidably connected to the guide rail.

3. The bending recovery performance testing device according to claim 2, characterized in that, The bending module includes: The slider is slidably connected to the guide rail; A pressure plate is connected to the slider, and the plane of the pressure plate is parallel to the preset side wall surface.

4. The bending recovery performance testing device according to claim 3, characterized in that, In the height direction of the base, the top surface of the pressure plate is higher than the top surface of the support platform.

5. The bending recovery performance testing device according to claim 3, characterized in that, In the width direction of the base, the width of the pressure plate is greater than or equal to the width of the support platform.

6. The bending recovery performance testing device according to claim 3, characterized in that, The surface of the pressure plate that faces the preset side wall is a smooth plane.

7. The bending recovery performance testing device according to claim 3, characterized in that, The connection surface between the top surface of the support platform and the preset side wall surface has a rounded corner structure.

8. The bending recovery performance testing device according to claim 3, characterized in that, The bending recovery performance testing device further includes a first scale and a second scale. The first scale is disposed on the top surface of the support platform and extends horizontally, while the second scale is disposed on the preset side wall and extends vertically.

9. The bending recovery performance testing device according to claim 2, characterized in that, The bending recovery performance testing device also includes two third scales, which are arranged opposite to each other on the base along the width direction of the base, and both third scales extend in the horizontal direction.

10. The bending recovery performance testing device according to any one of claims 1-9, characterized in that, The top surface of the support platform is provided with a threaded hole, and the clamping member is provided with a through hole. The fastener passes through the through hole and cooperates with the threaded hole to clamp the sample to be tested.

Images