A device for detecting the mechanical properties of a flexible sheet material

Abstract

The application relates to a mechanical property detection device for flexible sheet materials, and belongs to the technical field of flexible sheet material detection. The device comprises a workbench and two supporting vertical plates fixedly connected to the top of the workbench. Two mounting seats are arranged on the upper surface of the workbench, and a pushing engagement assembly extending into the workbench is arranged at the bottom of the mounting seat. The mechanical property detection device for flexible sheet materials is characterized in that the pushing engagement assembly and the stretching driving assembly are cooperatively matched. When the threaded rod is driven to rotate by the first motor, the movable sleeve and the left mounting seat are horizontally displaced, the axial tensile loading of the sample is realized, the lifting plate is driven to move downward by the electric push rod, the driven gear at the bottom end of the telescopic rod is engaged with the driving gear, the synchronous rotation of the left mounting frame and the sample clamping end is driven by the transmission of the synchronous wheel and the synchronous belt, and finally the rotation angle of the sample is dynamically adjusted in real time during the stretching process, so that the tensile torsional coupling mechanical property test is completed.

Description

Technical Field

[0001] This invention relates to the field of flexible sheet material testing technology, specifically to a device for testing the mechanical properties of flexible sheet materials. Background Technology

[0002] Flexible sheet materials (including flexible membranes, polymer films, battery separators, flexible electronic substrates, coated fabrics, etc.) have been widely used in flexible electronic devices, tensile membrane structures, new energy batteries, aerospace flexible unfolding structures, food and pharmaceutical packaging and other fields due to their excellent properties such as light weight, flexibility, high specific strength and bendability.

[0003] Chinese invention patent CN111351713B discloses a testing device for the multi-angle peeling and tensile mechanical properties of flexible materials. The device includes: an adjustable bidirectional loading system comprising two movable clamps and an arc-shaped sliding frame; a fixed unidirectional loading system comprising a dial, a fixed-end clamp, and a steel frame, with the fixed-end clamp fixedly mounted on the steel frame; and a monitoring system for real-time monitoring of the connection points of the three tensile arms of the test specimen, ensuring that the connection points are always located at the center of the dial by extending and retracting the fixed-end clamp. This invention employs a triaxial loading method, which can effectively simulate the testing of weld zone failure and separation during the actual use of flexible materials, as well as the mechanical property testing of triaxial specimens, based on actual engineering needs. It enables the study of the peeling and tensile properties of flexible materials under triaxial tensile loads at any initial angle, significantly improving the scientific validity and applicability of the test results.

[0004] However, in the process of using this invention, the existing loading methods mainly focus on in-plane stretching and peeling, which cannot achieve the application of torsion or bending detection to the material during the stretching process, and it is difficult to simulate the composite deformation that the material is subjected to in actual working conditions. Therefore, a mechanical property testing device for flexible sheet materials is proposed to solve the problems mentioned above. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a mechanical property testing device for flexible sheet materials. It has the advantage of being able to perform multi-mode mechanical property testing on flexible sheet materials, and solves the problem that existing loading methods mainly focus on in-plane stretching and peeling, which cannot apply torsion or bend to the material during stretching and are difficult to simulate the composite deformation that the material is subjected to in actual working conditions.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a mechanical property testing device for flexible sheet materials, comprising a worktable and two support vertical plates fixedly connected to the top of the worktable, two mounting seats being provided on the upper surface of the worktable, a pushing engagement assembly extending into the interior of the worktable being provided at the bottom of the mounting seats, and a stretching drive assembly capable of driving one mounting seat being provided inside the worktable. The push engagement assembly includes a telescopic rod rotatably connected to the bottom of the mounting base and extending into the workbench, a lifting plate rotatably connected to the outside of the movable rod on the telescopic rod, a driven gear fixedly connected to the bottom end of the telescopic rod, a connecting plate rotatably connected to the outside of the fixed cylinder of the telescopic rod, and an electric push rod fixedly connected between the lifting plate and the connecting plate. The stretching drive assembly includes a drive rod and a threaded rod rotatably connected inside the worktable, a movable sleeve slidably connected outside the drive rod and the threaded rod, a drive gear fixedly connected to the drive rod and the movable sleeve outside the movable sleeve, a first motor fixedly connected to the outside of the worktable and capable of driving the threaded rod, and a movable plate installed between the two movable sleeves.

[0007] Furthermore, a support plate is fixedly connected between the mounting base and the connecting plate, the top end of the telescopic rod extends to the top of the mounting base, the output end of the electric push rod is fixedly connected to the lifting plate, the mounting base on the left side is slidably connected to the worktable, and the mounting base on the right side is fixedly connected to the worktable.

[0008] Furthermore, the top and bottom of the drive rod are fixedly connected with positioning strips extending into the interior of the movable sleeve. Both the driving gear and the driven gear are bevel gears, and the rotation axes of the driving gear and the driven gear are perpendicular to each other and intersect.

[0009] Furthermore, the stretching drive assembly also includes a limiting guide rod fixedly connected inside the worktable, a synchronous pulley fixedly connected outside the drive rod and the threaded rod, a synchronous belt drivingly connected between the two synchronous pulleys, and a support rod fixedly connected between the connecting plate and the moving plate.

[0010] Furthermore, the threaded rod and the movable sleeve are connected by a threaded connection, the movable sleeve is also slidably connected to the outside of the limiting guide rod, and the movable sleeve on the drive rod is connected to the movable plate by a rotational connection.

[0011] Furthermore, each of the two mounting bases is provided with a mounting frame on its top. A flexible clamping airbag is fixedly connected to the inner top wall of the mounting frame. An inflation pipe extending into the workbench is fixedly connected to the top of the mounting frame. The flexible clamping airbag is connected to the inflation pipe. An inflation pump is fixedly connected inside the workbench. A T-connector is fixedly connected between the two inflation pipes. The output end of the inflation pump is connected to the T-connector.

[0012] Furthermore, the mounting bracket on the left is fixedly connected to the top of the telescopic rod, the mounting bracket on the right is fixedly connected to the mounting base, a fixing plate is fixedly connected to the top of the workbench, a limit baffle is provided on the side of the fixing plate near the mounting bracket, and a buffer spring is fixedly connected between the fixing plate and the limit baffle.

[0013] Furthermore, a movable seat is provided between the two supporting vertical plates, and a telescopic cylinder extending to its bottom is fixedly connected to the top of the movable seat. A pressure head test assembly is provided on the output end of the telescopic cylinder.

[0014] Furthermore, the pressure head test assembly includes a fixed base fixedly connected to the output end of the telescopic cylinder, a detachable plate disposed at the bottom of the fixed base, a pressure head disposed at the bottom of the detachable plate, a threaded head fixedly connected to the top of the pressure head and threadedly connected to the detachable plate, a threaded post fixedly connected to the top of the detachable plate and penetrating the fixed base, and a fastening sleeve threadedly connected to the outside of the threaded post.

[0015] Furthermore, a ball screw is rotatably connected between the two support vertical plates, and the ball screw is connected to the movable seat by a threaded connection. A second motor capable of rotating the ball screw is fixedly connected to the outside of the support vertical plates, and a guide rod capable of guiding the movable seat is fixedly connected between the two support vertical plates.

[0016] Compared with the prior art, the present invention provides a device for testing the mechanical properties of flexible sheet materials, which has the following advantages: 1. This mechanical property testing device for flexible sheet materials, through the coordinated operation of the meshing component and the tensile drive component, drives the threaded rod to rotate via the first motor, causing the moving sleeve and the left mounting seat to move horizontally and achieve axial tensile loading on the sample. At the same time, the electric push rod drives the lifting plate to move down, so that the driven gear at the bottom of the telescopic rod meshes with the driving gear. With the transmission of the synchronous pulley and the synchronous belt, the drive rod and the threaded rod rotate synchronously, thereby driving the left mounting frame and the sample clamping end to rotate synchronously. Finally, the rotation angle of the sample is dynamically adjusted in real time during the tensile process to complete the tensile and torsional coupled mechanical property test. This completely solves the core defect of the existing technology that can only pre-adjust a fixed loading angle and cannot achieve dynamic coupled loading during the test. It perfectly matches the complex working conditions of flexible sheet materials simultaneously bearing tensile and torsional loads in actual use.

[0017] 2. This mechanical property testing device for flexible sheet materials abandons the traditional rigid knob clamping structure. It supplies air to the flexible clamping airbag in the mounting frame through an air pump, a three-way pipe and an air pipe. The uniform deformation of the flexible airbag applies a surface contact clamping force to the flexible sheet sample. This avoids the squeezing damage to the sample edge and premature breakage of the clamping end caused by rigid line contact clamping. It can also precisely and steplessly adjust the clamping force through air pressure control to adapt to flexible sheet samples of different thicknesses and materials.

[0018] 3. This mechanical property testing device for flexible sheet materials can not only test unidirectional tensile, rotational coupling tensile, and bending properties, but also has a horizontally movable local performance testing module set on the top of the device. The ball screw is driven to rotate by a second motor, which drives the moving seat to move laterally along the guide rod. With the vertical feed of the telescopic cylinder, the pressure head testing component can be accurately moved to any point in the sample surface to complete the local compressive strength, puncture resistance and other mechanical property tests of different areas of the sample.

[0019] 4. This mechanical property testing device for flexible thin sheet materials features a detachable plate that allows for quick assembly and disassembly from the fixed base via a threaded post and fastening sleeve. The pressure head is connected to the detachable plate via a threaded head. Different specifications and types of pressure heads can be quickly replaced according to different testing standards and test items without the need to replace the entire testing component. It is easy to operate and has a wide range of applicability. Attached Figure Description

[0020] Figure 1 This is a perspective view of a mechanical property testing device for flexible sheet materials according to the present invention; Figure 2 This is a perspective view of the worktable of a mechanical property testing device for flexible sheet materials according to the present invention; Figure 3 This is a perspective view of a tensile drive assembly for a mechanical property testing device for flexible sheet materials according to the present invention. Figure 4 This is a perspective view of a push-engagement assembly of a mechanical property testing device for flexible sheet materials according to the present invention; Figure 5 This is a perspective view of an air pump for a mechanical property testing device for flexible sheet materials according to the present invention. Figure 6 This is a perspective view of a ball screw for a mechanical property testing device for flexible sheet materials according to the present invention. Figure 7 This is an exploded view of the indenter testing assembly of a mechanical property testing device for flexible sheet materials according to the present invention.

[0021] In the diagram: 1. Workbench; 2. Supporting vertical plate; 3. Mounting base; 4. Push engagement assembly; 401. Telescopic rod; 402. Lifting plate; 403. Driven gear; 404. Electric push rod; 405. Connecting plate; 5. Tension drive assembly; 501. Drive rod; 502. Threaded rod; 503. Moving sleeve; 504. Driving gear; 505. First motor; 506. Limiting guide rod; 507. Synchronous pulley; 508. Synchronous belt; 50 9. Support rod; 6. Mounting bracket; 7. Flexible clamping airbag; 8. Inflation pipe; 9. T-pipe; 10. Inflation pump; 11. Fixing plate; 12. Limiting baffle; 13. Moving seat; 14. Telescopic cylinder; 15. Indenter test assembly; 151. Fixing seat; 152. Detachable plate; 153. Indenter; 154. Threaded head; 155. Threaded post; 156. Fastening sleeve; 16. Ball screw; 17. Second motor; 18. Guide rod. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see Figures 1 to 4 This embodiment of a mechanical property testing device for flexible sheet materials includes a workbench 1 and two support vertical plates 2 fixedly connected to the top of the workbench 1. Two mounting seats 3 are provided on the upper surface of the workbench 1. A push engagement assembly 4 extending into the workbench 1 is provided at the bottom of the mounting seat 3. A tension drive assembly 5 capable of driving one mounting seat 3 is provided inside the workbench 1. The push engagement assembly 4 includes a telescopic rod 401 rotatably connected to the bottom of the mounting seat 3 and extending into the workbench 1, a lifting plate 402 rotatably connected to the outside of the movable rod on the telescopic rod 401, a driven gear 403 fixedly connected to the bottom end of the telescopic rod 401, a connecting plate 405 rotatably connected to the outside of the fixed cylinder of the telescopic rod 401, and an electric push rod 404 fixedly connected between the lifting plate 402 and the connecting plate 405. The stretching drive assembly 5 includes a drive rod 501 and a threaded rod 502 rotatably connected inside the worktable 1, a movable sleeve 503 slidably connected outside the drive rod 501 and the threaded rod 502, a drive gear 504 fixedly connected to the drive rod 501 and the movable sleeve 503, a first motor 505 fixedly connected to the outside of the worktable 1 and capable of driving the threaded rod 502, and a movable plate installed between the two movable sleeves 503.

[0024] Specifically, a support plate is fixedly connected between the mounting base 3 and the connecting plate 405. The top end of the telescopic rod 401 extends to the top of the mounting base 3. The output end of the electric push rod 404 is fixedly connected to the lifting plate 402. The left mounting base 3 is slidably connected to the worktable 1, and the right mounting base 3 is fixedly connected to the worktable 1. Positioning strips extending into the moving sleeve 503 are fixedly connected to the top and bottom of the drive rod 501. Both the driving gear 504 and the driven gear 403 are bevel gears. The rotation axes of the driving gear 504 and the driven gear 403 are perpendicular to each other and intersect.

[0025] It should be noted that the stretching drive assembly 5 also includes a limiting guide rod 506 fixedly connected inside the worktable 1, a synchronous pulley 507 fixedly connected outside the drive rod 501 and the threaded rod 502, a synchronous belt 508 connected between the two synchronous pulleys 507, and a support rod 509 fixedly connected between the connecting plate 405 and the moving plate.

[0026] It should be noted that all the rotating connections in the above structure are connected by bearings. The threaded rod 502 and the movable sleeve 503 are connected by a threaded connection. The movable sleeve 503 is also slidably connected to the outside of the limiting guide rod 506. The movable sleeve 503 on the drive rod 501 is connected to the movable plate by a rotating connection. A straight groove extending horizontally is provided on the top of the worktable 1. The inner wall of the straight groove is fitted with a wear-resistant nylon liner. The straight groove is adapted to the sliding stroke of the left mounting seat 3.

[0027] It should be noted that, to further improve the meshing accuracy between the driven gear 403 and the driving gear 504, a displacement sensor is added to the drive meshing assembly 4. The displacement sensor is positioned along the movement path of the lifting plate 402 to detect the axial position of the driven gear 403 in real time. When the electric push rod 404 drives the lifting plate 402 downwards, the displacement sensor feeds back the position signal to the controller. When the driven gear 403 approaches the driving gear 504, the controller reduces the speed of the electric push rod 404, allowing the gears to slowly enter the meshing state. Simultaneously, a torque sensor can be installed at either the driving gear 504 or the driven gear 403 to monitor torque fluctuations during meshing and determine whether the gears have fully entered the correct meshing position. After meshing, the electric push rod 404 maintains a locked thrust to ensure that the gears do not disengage during testing. Through this closed-loop control, the accuracy and reliability of gear meshing can be effectively guaranteed, avoiding gear damage or test data distortion caused by poor meshing.

[0028] It should be noted that the rotation of the threaded rod 502 driven by the first motor 505 can drive the movable sleeve 503 to move, and the movable sleeve 503 can drive the mounting base 3 to move, thereby stretching the flexible sheet material on the mounting base 3. When the electric push rod 404 drives the lifting plate 402 to move downward, the driven gear 403 can move downward due to the action of the telescopic rod 401. At the same time, the driven gear 403 meshes with the driving gear 504, and through the action of the synchronous belt 508, the drive rod 501 and the threaded rod 502 rotate synchronously, so that the mounting base 3 moves and the mounting frame 6 rotates synchronously, thereby achieving the effect of rotating and stretching the flexible sheet material. At the same time, when the distance between the two mounting bases 3 decreases, the bending detection of the flexible sheet material can be performed.

[0029] Please see Figure 2 and Figure 5 In this embodiment, a mounting frame 6 is provided on the top of each of the two mounting bases 3. A flexible clamping airbag 7 is fixedly connected to the inner top wall of the mounting frame 6. An inflation pipe 8 extending into the interior of the workbench 1 is fixedly connected to the top of the mounting frame 6. The flexible clamping airbag 7 is connected to the inflation pipe 8. An inflation pump 10 is fixedly connected inside the workbench 1. A three-way pipe 9 is fixedly connected between the two inflation pipes 8. The output end of the inflation pump 10 is connected to the three-way pipe 9.

[0030] Specifically, the left mounting bracket 6 is fixedly connected to the top of the telescopic rod 401, the right mounting bracket 6 is fixedly connected to the mounting base 3, the top of the workbench 1 is fixedly connected to a fixing plate 11, a limit baffle 12 is provided on the side of the fixing plate 11 near the mounting bracket 6, and a buffer spring is fixedly connected between the fixing plate 11 and the limit baffle 12.

[0031] Specifically, the mounting bracket 6 has a C-shaped opening structure with the opening facing the sample testing area. The upper and lower horizontal plates of the C-shaped structure form a clamping space adapted to the sample thickness. The flexible clamping airbag 7 is fixed to the lower surface of the upper horizontal plate of the C-shaped structure by a high-temperature resistant adhesive. The upper surface of the lower horizontal plate of the C-shaped structure has an integrally formed anti-slip texture layer, which is a diamond knurled or grid pattern structure. When the flexible clamping airbag 7 is inflated, it can cooperate with the anti-slip texture layer to form a surface contact clamping.

[0032] It should be noted that a rotary support bearing is provided between the inner movable rod of the telescopic rod 401 and the left mounting seat 3. The inner ring of the rotary support bearing is interference-fitted with the inner movable rod, and the outer ring is fixedly connected to the left mounting seat 3. This ensures that the left mounting bracket 6 can rotate freely with the inner movable rod, and also provides radial support for the telescopic rod 401, preventing radial wobble of the telescopic rod 401 and improving rotational accuracy. The fixing plate 11 is fixed to the left end of the linear slide groove on the top of the worktable 1, the limiting baffle 12 is directly opposite the left side wall of the left mounting seat 3, and the buffer spring is a cylindrical helical compression spring.

[0033] It should be noted that both ends of the linear slide are equipped with travel limit switches. The travel limit switches are electrically connected to the control system of the first motor 505. When the left mounting seat 3 moves to the limit stroke, it first contacts the limit baffle 12, and the impact kinetic energy is absorbed by the buffer spring. At the same time, the travel limit switch is triggered, and the control system immediately controls the first motor 505 to stop running, realizing mechanical and electrical dual limit protection to avoid rigid collision damage to the equipment.

[0034] Please see Figure 1 , Figure 6 and Figure 7 In this embodiment, a movable seat 13 is provided between the two supporting vertical plates 2. A telescopic cylinder 14 extending to the bottom of the movable seat 13 is fixedly connected to the top of the movable seat 13. A pressure head test assembly 15 is provided on the output end of the telescopic cylinder 14. The pressure head test assembly 15 includes a fixed seat 151 fixedly connected to the output end of the telescopic cylinder 14, a detachable plate 152 provided at the bottom of the fixed seat 151, a pressure head 153 provided at the bottom of the detachable plate 152, a threaded head 154 fixedly connected to the top of the pressure head 153 and threadedly connected to the detachable plate 152, a threaded post 155 fixedly connected to the top of the detachable plate 152 and penetrating the fixed seat 151, and a fastening sleeve 156 threadedly connected to the outside of the threaded post 155.

[0035] Specifically, a ball screw 16 is rotatably connected between the two support vertical plates 2, and the ball screw 16 is connected to the movable seat 13 by a threaded connection. A second motor 17 capable of rotating the ball screw 16 is fixedly connected to the outside of the support vertical plates 2, and a guide rod 18 capable of guiding the movable seat 13 is fixedly connected between the two support vertical plates 2.

[0036] Specifically, the fixed base 151 is a rectangular base, and a high-precision pressure sensor is connected in series between the top center of the base and the output end of the telescopic cylinder 14. The pressure sensor is electrically connected to the control system and can collect the pressure data applied to the sample by the pressure head 153 in real time. With the displacement sensor built into the telescopic cylinder 14, the load-displacement curve of the sample can be accurately obtained, and the quantitative test of local mechanical properties can be realized.

[0037] It should be noted that the bottom center of the detachable plate 152 has an internal threaded hole, and the threaded head 154 at the top of the pressure head 153 is adapted to the internal threaded hole. Different types of pressure heads 153 can be quickly replaced according to testing needs, including but not limited to: flat cylindrical head for compressive strength testing, pointed conical head for puncture performance testing, spherical head for flexural resistance testing, and wedge head for scratch resistance testing, to meet the testing needs of different industries and standards.

[0038] It should be noted that the plate of the movable seat 13 is provided with a threaded transmission hole adapted to the ball screw 16 and a guide slide hole adapted to the guide rod 18. A linear bearing is interference fitted in the guide slide hole to ensure the smooth sliding of the movable seat 13.

[0039] The working principle of the above embodiments is as follows: Uniaxial tensile performance test mode: When a conventional uniaxial tensile test is required, the electric push rod 404 is in the retracted state, the lifting plate 402 is in the upper position, and the driven gear 403 is disengaged from the driving gear 504. The first motor 505 is started, driving the threaded rod 502 to rotate. Due to the threaded engagement between the threaded rod 502 and the movable sleeve 503, the movable sleeve 503 drives the movable plate to move axially along the threaded rod 502. Simultaneously, through the transmission of the synchronous belt 508 and the synchronous pulley 507, the drive rod 501 rotates synchronously with the threaded rod 502, and the movable sleeve 503 on the drive rod 501 also moves accordingly. The movable plate is fixedly connected to the connecting plate 405 via the support rod 509, thereby driving the left mounting seat 3 to slide to the left along the worktable 1, while the right mounting seat 3 remains stationary, thus applying a tensile load to the sample.

[0040] Rotational tensile coupling performance test mode: When a rotational tensile test is required, the electric push rod 404 is activated, pushing the lifting plate 402 downward. The lifting plate 402 drives the movable rod of the telescopic rod 401 to extend downward, causing the driven gear 403 fixed at the bottom of the telescopic rod 401 to move downward until it is fully engaged with the driving gear 504. At the same time, the first motor 505 drives the threaded rod 502 to rotate, and through the synchronous pulley 507 and the synchronous belt 508, drives the drive rod 501 to rotate synchronously with the threaded rod 502 in a 1:1 ratio. The drive rod 501 drives the driving gear 504 on the moving sleeve 503 to rotate synchronously through the positioning bar. The driving gear 504 drives the engaged driven gear 403 to rotate synchronously. The driven gear 403 drives the left mounting bracket 6 to rotate synchronously through the telescopic rod 401. Finally, while the left mounting seat 3 stretches the sample horizontally to the left, the left mounting bracket 6 drives one end of the sample to rotate synchronously, completing the rotational tensile coupling loading of the flexible sheet material, accurately reflecting the actual complex service conditions of the raw material.

[0041] Bending performance test mode: The control system controls the first motor 505 to rotate in the opposite direction, which drives the threaded rod 502 to rotate in the opposite direction, thereby driving the left mounting seat 3 to move to the right along the straight slide groove, gradually reducing the distance between the two mounting seats 3. The two ends of the sample clamped between the two mounting frames 6 approach each other, and the middle of the sample arches upward and undergoes bending deformation. At the same time, according to the test requirements, the electric push rod 404 can be controlled to rotate synchronously with the left mounting frame 6 to realize the bending torsion coupling test.

[0042] Local mechanical property testing mode: First, the sample is clamped and fixed by the mounting bracket 6. The control system controls the second motor 17 to start. The second motor 17 drives the ball screw 16 to rotate, which in turn drives the moving seat 13 to move laterally along the guide rod 18, accurately moving the indenter test assembly 15 directly above the test point of the sample. Then, the telescopic cylinder 14 is controlled to extend, driving the indenter test assembly 15 to move downward, so that the indenter 153 contacts the sample surface, and the test load is applied according to the preset loading rate. The load data is collected in real time by the pressure sensor, and the downward displacement data of the indenter 153 is collected by the displacement sensor of the telescopic cylinder 14. The local load displacement curve is automatically generated to complete the accurate testing of the local mechanical properties of the sample.

[0043] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods, and any method that achieves the desired beneficial effect can be implemented. Furthermore, all electrical components in this embodiment are electrically connected to the main controller and power supply. The main controller can be a conventional, known device such as a computer that performs control functions. Those skilled in the art can control the electrical components through simple programming, and the existing disclosed power connection technologies are common knowledge in the field. Therefore, this embodiment will not elaborate further on their specific structural composition and working principles.

[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0045] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for testing the mechanical properties of flexible sheet materials, comprising a worktable (1) and two support vertical plates (2) fixedly connected to the top of the worktable (1), characterized in that: Two mounting seats (3) are provided on the upper surface of the workbench (1). A push engagement assembly (4) extending into the workbench (1) is provided at the bottom of the mounting seat (3). A stretch drive assembly (5) capable of driving one mounting seat (3) is provided inside the workbench (1). The push engagement assembly (4) includes a telescopic rod (401) rotatably connected to the bottom of the mounting base (3) and extending into the workbench (1), a lifting plate (402) rotatably connected to the outside of the movable rod on the telescopic rod (401), a driven gear (403) fixedly connected to the bottom end of the telescopic rod (401), a connecting plate (405) rotatably connected to the outside of the fixed cylinder of the telescopic rod (401), and an electric push rod (404) fixedly connected between the lifting plate (402) and the connecting plate (405). The stretching drive assembly (5) includes a drive rod (501) and a threaded rod (502) rotatably connected inside the worktable (1), a movable sleeve (503) slidably connected outside the drive rod (501) and the threaded rod (502), a drive gear (504) fixedly connected to the drive rod (501) and the movable sleeve (503), a first motor (505) fixedly connected to the outside of the worktable (1) and capable of driving the threaded rod (502), and a movable plate installed between the two movable sleeves (503).

2. The mechanical property testing device for flexible thin sheet materials according to claim 1, characterized in that: A support plate is fixedly connected between the mounting base (3) and the connecting plate (405). The top end of the telescopic rod (401) extends to the top of the mounting base (3). The output end of the electric push rod (404) is fixedly connected to the lifting plate (402). The mounting base (3) on the left side is connected to the worktable (1) by sliding connection, and the mounting base (3) on the right side is connected to the worktable (1) by fixed connection.

3. The mechanical property testing device for flexible thin sheet materials according to claim 1, characterized in that: The top and bottom of the drive rod (501) are fixedly connected with positioning strips extending into the interior of the movable sleeve (503). The driving gear (504) and the driven gear (403) are both bevel gears. The rotation axes of the driving gear (504) and the driven gear (403) are perpendicular to each other and intersect.

4. The mechanical property testing device for flexible thin sheet materials according to claim 1, characterized in that: The stretching drive assembly (5) also includes a limiting guide rod (506) fixedly connected inside the worktable (1), a synchronous pulley (507) fixedly connected outside the drive rod (501) and the threaded rod (502), a synchronous belt (508) connected between the two synchronous pulleys (507) and a support rod (509) fixedly connected between the connecting plate (405) and the moving plate.

5. The mechanical property testing device for flexible thin sheet materials according to claim 4, characterized in that: The threaded rod (502) and the movable sleeve (503) are connected by a threaded connection. The movable sleeve (503) is also slidably connected to the outside of the limiting guide rod (506). The movable sleeve (503) on the drive rod (501) and the movable plate are connected by a rotational connection.

6. The mechanical property testing device for flexible thin sheet materials according to claim 1, characterized in that: The top of each of the two mounting bases (3) is provided with a mounting frame (6). A flexible clamping airbag (7) is fixedly connected to the inner top wall of the mounting frame (6). An inflation pipe (8) extending into the workbench (1) is fixedly connected to the top of the mounting frame (6). The flexible clamping airbag (7) is connected to the inflation pipe (8). An inflation pump (10) is fixedly connected inside the workbench (1). A three-way pipe (9) is fixedly connected between the two inflation pipes (8). The output end of the inflation pump (10) is connected to the three-way pipe (9).

7. The mechanical property testing device for flexible thin sheet materials according to claim 6, characterized in that: The mounting bracket (6) on the left is fixedly connected to the top of the telescopic rod (401), and the mounting bracket (6) on the right is fixedly connected to the mounting base (3). A fixing plate (11) is fixedly connected to the top of the workbench (1). A limit baffle (12) is provided on the side of the fixing plate (11) near the mounting bracket (6). A buffer spring is fixedly connected between the fixing plate (11) and the limit baffle (12).

8. The mechanical property testing device for flexible thin sheet materials according to claim 1, characterized in that: A movable seat (13) is provided between the two support vertical plates (2). A telescopic cylinder (14) extending to the bottom of the movable seat (13) is fixedly connected to the top of the movable seat (13). A pressure head test assembly (15) is provided on the output end of the telescopic cylinder (14).

9. The mechanical property testing device for flexible thin sheet materials according to claim 8, characterized in that: The pressure head test assembly (15) includes a fixed seat (151) fixedly connected to the output end of the telescopic cylinder (14), a detachable plate (152) set at the bottom of the fixed seat (151), a pressure head (153) set at the bottom of the detachable plate (152), a threaded head (154) fixedly connected to the top of the pressure head (153) and threadedly connected to the detachable plate (152), a threaded post (155) fixedly connected to the top of the detachable plate (152) and penetrating the fixed seat (151), and a fastening sleeve (156) threadedly connected to the outside of the threaded post (155).

10. A mechanical property testing device for flexible sheet materials according to claim 8, characterized in that: A ball screw (16) is rotatably connected between the two support vertical plates (2). The ball screw (16) is connected to the movable seat (13) by a threaded connection. A second motor (17) capable of rotating the ball screw (16) is fixedly connected to the outside of the support vertical plate (2). A guide rod (18) capable of guiding the movable seat (13) is fixedly connected between the two support vertical plates (2).

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