Bend trajectory controllable test device

Abstract

The utility model discloses a kind of bending trajectory controllable test equipment, belong to bending test technical field.Bending trajectory controllable test equipment includes bearing unit, bending compensation unit and turnover unit, two side plates are set on the both sides of bottom plate;Bending compensation unit includes first compensation moving plate, second compensation moving plate and fixed plate, first compensation moving plate is slidably arranged between two side plates, first compensation moving plate can be moved along Z axis direction, second compensation moving plate is slidably arranged on first compensation moving plate, second compensation moving plate can be moved along Y axis direction, fixed plate is fixedly arranged on second compensation moving plate, and fixed plate is used to fix the first part of material to be bent;Turnover unit includes the turnover plate that can rotate around C axis direction, turnover plate is rotatably arranged between two side plates, and turnover plate is used to fix the second part of material to be bent.The utility model improves the bending test precision of flexible material, and can reduce floor area, optimize equipment layout mode.

Description

Technical Field

[0001] This utility model relates to the field of bending test technology, and in particular to a bending trajectory controllable test device. Background Technology

[0002] In today's era of rapid technological advancement, flexible screen technology, with its unique bendability, has demonstrated enormous application potential in electronic devices such as mobile phones, tablets, and computers, bringing possibilities for thinner, more portable, and innovative designs. However, to ensure that flexible screens can reliably bend and unfold during actual use, thereby providing users with a stable and high-quality user experience, it is essential to utilize professional bending testing equipment—specifically, flexible material bending performance testing equipment—to conduct comprehensive and rigorous bending tests on the flexible screens and supporting film materials used in mobile phones, tablets, or computers.

[0003] These bending tests are of paramount importance. By meticulously testing the bending performance of flexible screens and supporting film materials under various bending conditions, technicians can gain a deep understanding of the product's performance during bending, thereby comprehensively evaluating the overall quality of the product. For example, they can detect whether the material will develop cracks, deformation, or display abnormalities after repeated bending, and at what number of bends performance degradation will occur. This test data not only provides crucial information for product research and development and improvement but also helps manufacturers conduct quality control during production, ensuring that every piece of equipment leaving the factory possesses reliable bending performance.

[0004] Unfortunately, existing bending testing equipment cannot effectively compensate for the stress patterns during bending. Because the stress on flexible screens and supporting membrane materials is highly complex under different bending angles, speeds, and forces, if the equipment cannot adjust and compensate for the stress patterns in real time according to the actual situation, the test results will deviate from actual usage, thus reducing test accuracy. This reduced accuracy will affect the accurate assessment of the product's bending performance, making it difficult for R&D personnel to make targeted improvements and optimizations, ultimately impacting the product's market competitiveness. Furthermore, existing flexible material bending testing equipment on the market has many shortcomings in its structural design. These devices are often bulky and space-consuming. This not only increases the cost of using the equipment, requiring a large installation space, but also causes significant inconvenience in the layout and use of the equipment in space-constrained laboratories or production workshops. Utility Model Content

[0005] The purpose of this invention is to provide a bending trajectory controllable testing device, which not only improves the bending testing accuracy of flexible materials, but also reduces the floor space and optimizes the equipment layout.

[0006] To achieve the above objectives, the following technical solution is provided:

[0007] Bending trajectory controllable testing equipment includes:

[0008] The supporting unit includes a base plate and two side plates, the two side plates being parallel and spaced apart on both sides of the base plate;

[0009] The bending compensation unit includes a first compensation moving plate, a second compensation moving plate, and a fixed plate. The first compensation moving plate is slidably disposed between the two side plates and can move along the Z-axis. The second compensation moving plate is slidably disposed on the first compensation moving plate and can move along the Y-axis. The fixed plate is fixedly disposed on the second compensation moving plate and is used to fix the first part of the material to be bent.

[0010] The flipping unit includes a flip plate that can rotate about the C-axis. The flip plate is rotatably disposed between the two side plates and is used to fix a second part of the material to be bent.

[0011] As an optional solution for a bend trajectory controllable testing device, the bend compensation unit further includes:

[0012] A Z-axis drive module is mounted on the base plate. The Z-axis drive module is connected to the first compensation moving plate and is used to drive the first compensation moving plate to move along the Z-axis direction.

[0013] As an optional solution for a bend trajectory controllable testing device, the bend compensation unit further includes:

[0014] A floating joint, one end of which is connected to the first compensation moving plate, and the other end of which is connected to the output end of the Z-axis drive module.

[0015] As an optional solution for a test device for controllable bending trajectory, the inner wall of the side plate is provided with a guide rail extending along the Z-axis direction, and the side wall of the first compensation moving plate is provided with a slider, which is slidably connected to the guide rail.

[0016] As an optional solution for a bend trajectory controllable testing device, the bend compensation unit further includes:

[0017] A Y-axis drive module is disposed on the first compensation moving plate. The Y-axis drive module is connected to the second compensation moving plate in a transmission manner. The Y-axis drive module is used to drive the second compensation moving plate to move along the Y-axis direction.

[0018] As an optional solution for a bend trajectory controllable testing device, the flipping unit further includes:

[0019] A C-axis flip drive module is disposed on the side plate. The C-axis flip drive module is connected to the flip plate and is used to drive the flip plate to rotate by a set angle.

[0020] As an optional solution for the bend trajectory controllable testing device, the fixed plate has a first cavity, and the fixed plate is provided with a first adsorption hole communicating with the first cavity; the flip plate has a second cavity, and the flip plate is provided with a second adsorption hole communicating with the second cavity; the bend trajectory controllable testing device further includes a vacuum adsorption control unit, which includes:

[0021] The main pipeline has a first end connected to a vacuum pump, and both the first cavity and the second cavity are connected to the second end of the main pipeline.

[0022] As an optional solution for a bend trajectory controllable testing device, the fixed plate is provided with at least two first cavities, the flip plate is provided with at least two second cavities, and the vacuum adsorption control unit includes:

[0023] At least two branch pipes, one end of each branch pipe is connected to the second end of the main pipe, and the corresponding first cavity and the corresponding second cavity are connected to the other end of the corresponding branch pipe.

[0024] As an optional solution for the controllable bending trajectory testing equipment, at least one of the branch pipes is equipped with a first switching valve, which is used to control the on / off state of the branch pipe.

[0025] As an optional solution for the bend trajectory controllable testing equipment, a second switching valve with multiple control positions is provided at the connection between the branch pipeline and the main pipeline, and the main pipeline is selectively connected to at least one of the branch pipelines through the second switching valve.

[0026] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0027] The bending trajectory controllable testing device provided by this utility model fixes the first part of the material to be bent on a fixed plate and the second part of the material to be bent on a flip plate. The material can be bent by the flip plate's rotation around the C-axis. Since the fixed plate is fixedly mounted on the second compensation moving plate, the cooperation of the first and second compensation moving plates enables compensated movement of the fixed plate in the Z-axis and Y-axis directions, allowing flexible material products to achieve U-shaped bending dynamic motion testing and improving the accuracy of bending tests on flexible materials. The bending compensation unit and the flipping unit have a compact structure, optimizing the equipment layout and reducing the floor space required. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0029] Figure 1 This is a front view of the bend trajectory controllable testing device in this embodiment of the present invention;

[0030] Figure 2 This is a first-view assembly diagram of the bend trajectory controllable testing device in an embodiment of this utility model.

[0031] Figure 3 This is a second-view assembly diagram of the bending trajectory controllable testing device in an embodiment of this utility model.

[0032] Figure 4 This is a schematic diagram of the flap structure in an embodiment of the present utility model;

[0033] Figure 5 This is an exploded view of the flap in an embodiment of the present invention;

[0034] Figure 6 This is a schematic diagram of the compensation principle trajectory in an embodiment of this utility model.

[0035] Figure label:

[0036] 1. Bearing unit; 2. Bending compensation unit; 3. Tilting unit; 4. Vacuum adsorption control unit;

[0037] 11. Base plate; 12. Side plate; 13. Guide rail; 14. Reinforcing link;

[0038] 21. First compensation moving plate; 22. Second compensation moving plate; 23. Fixed plate; 231. First adsorption hole; 24. Z-axis drive module; 25. Slider; 26. Y-axis drive module; 27. Floating joint;

[0039] 31. Flip plate; 311. Second suction hole; 312. Plate body; 3121. Second cavity; 313. Sealing sheet; 314. Sealing plate; 315. Air pipe connector; 32. C-axis flip drive module;

[0040] 41. Main pipeline; 42. Branch pipeline; 43. First switch valve. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0042] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are used only for the convenience of describing this utility model and for 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 utility model. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0043] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0044] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0045] In the field of flexible material bending performance testing, it is crucial to accurately simulate the bending trajectory of materials in actual applications and obtain high-precision test data. This not only relates to the quality of product development but also affects the product's market competitiveness.

[0046] To improve the accuracy of bending tests on flexible materials, reduce the footprint, and optimize equipment layout, this embodiment provides a bending trajectory controllable testing device, which is described below in conjunction with... Figures 1 to 6 The specific content of this embodiment will be described in detail.

[0047] It should be noted that, in the coordinate system involved in this embodiment, in order to clearly describe the movement direction and positional relationship of each component of the equipment, the Z-axis direction and height direction mentioned in this embodiment are explicitly defined as follows: Figure 2 The Z-direction in this embodiment refers to the Y-axis direction. Figure 2 The Y-direction in this embodiment refers to the C-axis direction. Figure 2 The X-direction in the coordinate system. This coordinate system provides a unified benchmark for subsequent explanations of the equipment's structure and motion principles, ensuring the accuracy and consistency of the description.

[0048] The bending trajectory controllable testing device in this embodiment includes a support unit 1, a bending compensation unit 2, and a flipping unit 3. These units cooperate to achieve accurate testing of the bending performance of flexible materials. The support unit 1, as the basic support structure of the entire device, plays a crucial role. The support unit 1 includes a base plate 11 and two side plates 12, which are arranged parallel and spaced apart on both sides of the base plate 11. This design not only provides a stable mounting platform for the bending compensation unit 2 and the flipping unit 3 but also ensures the overall structural stability of the device, allowing each component to move according to a predetermined trajectory and method during testing, preventing errors due to structural instability. The bending compensation unit 2 is one of the core components of this device. Through a unique structural design, it compensates for the force applied during bending, thereby improving testing accuracy. This unit includes a first compensation moving plate 21, a second compensation moving plate 22, and a fixed plate 23. The first compensation moving plate 21 is slidably disposed between the two side plates 12 and can move in the Z-axis direction. This design allows the first compensation moving plate 21 to be finely adjusted in the vertical direction according to the actual force on the material to be bent during the bending process, thus compensating for the changes in force in the vertical direction caused by bending. The second compensation moving plate 22 is slidably disposed on the first compensation moving plate 21 and can move along the Y-axis. Through the coordinated movement of the first compensation moving plate 21 and the second compensation moving plate 22, the fixed plate 23 can achieve compensatory movement in the Z-axis and Y-axis directions. The fixed plate 23 is fixedly disposed on the second compensation moving plate 22, and its main function is to fix the first part of the material to be bent. During the bending process, the fixed plate 23 adjusts its position with the movement of the first compensation moving plate 21 and the second compensation moving plate 22, so that the first part of the material to be bent can adapt to the changes in force during the bending process, thereby achieving a more accurate bending test. The flipping unit 3 is the key part for realizing material bending. It includes a flip plate 31 that can rotate around the C-axis, and the flip plate 31 is rotatably disposed between the two side plates 12. The main function of the flip plate 31 is to fix the second part of the material to be bent. During the test, the flip plate 31 rotates around the C-axis under the action of the flipping drive device, thereby causing the second part of the material to be bent to bend relative to the first part. By controlling the rotation angle and speed of the flip plate 31, different bending trajectories and bending conditions can be accurately simulated to meet different testing requirements.

[0049] The bending trajectory controllable testing device provided by this utility model fixes the first part of the material to be bent on a fixed plate 23 and the second part on a flip plate 31. The bending of the material is achieved by the flip plate 31 rotating around the C-axis. Since the fixed plate 23 is fixed on the second compensation moving plate 22, the cooperation of the first compensation moving plate 21 and the second compensation moving plate 22 enables the fixed plate 23 to perform compensated movements in the Z-axis and Y-axis directions. This allows the device to perform U-shaped bending dynamic motion testing on flexible material products, more realistically simulating the bending situation of materials in actual use, thereby improving the accuracy of bending tests on flexible materials. Simultaneously, the bending compensation unit 2 and the flipping unit 3 have a compact structure. This compact design optimizes the layout of the device, reduces the footprint, and lowers the operating cost, providing an efficient, accurate, and space-saving solution for testing the bending performance of flexible materials.

[0050] Secondly, existing bending test equipment suffers from serious design flaws in its drive modules. All drive modules are typically connected in series, a design that leaves the equipment lacking sufficient fault tolerance. If one drive module fails, it can trigger a domino effect, causing the entire device to malfunction. This not only impacts testing progress and increases repair time and costs, but can also lead to data loss, causing unnecessary losses in product development and production.

[0051] Furthermore, the bending compensation unit 2 also includes a Z-axis drive module 24, which is mounted on the base plate 11 and is connected to the first compensation moving plate 21 via a transmission connection. The Z-axis drive module 24 is used to drive the first compensation moving plate 21 to move along the Z-axis direction. The bending compensation unit 2 also includes a Y-axis drive module 26, which is mounted on the first compensation moving plate 21 and is connected to the second compensation moving plate 22 via a transmission connection. The Y-axis drive module 26 is used to drive the second compensation moving plate 22 to move along the Y-axis direction. The bending compensation unit 2 is a key component for ensuring testing accuracy and adapting to different bending conditions. In addition to the first compensation moving plate 21, the second compensation moving plate 22, and the fixed plate 23, the bending compensation unit 2 is also equipped with a Z-axis drive module 24 and a Y-axis drive module 26. The Z-axis drive module 24 is cleverly mounted on the base plate 11 and is tightly connected to the first compensation moving plate 21 via a transmission connection. During the testing process, the Z-axis drive module 24 plays a crucial role. It precisely drives the first compensation moving plate 21 along the Z-axis based on the vertical force changes generated during bending of the material. This dynamic adjustment capability allows the stationary plate 23 to adapt to the material's stress conditions in real time, ensuring that the first part of the material remains under ideal stress during bending, thus effectively improving test accuracy. The Y-axis drive module 26 is equally indispensable. It is mounted on the first compensation moving plate 21 and forms a transmission connection with the second compensation moving plate 22. When the material experiences horizontal force changes during bending, the Y-axis drive module 26 responds quickly, driving the second compensation moving plate 22 to move along the Y-axis. Through the coordinated movement of the first and second compensation moving plates 21 and 22 in the Z and Y axes, the stationary plate 23 can achieve precise compensation for complex stress patterns during bending. This compensation mechanism enables flexible material products to undergo U-shaped bending dynamic motion testing, which more realistically simulates the bending scenarios of materials in actual applications, greatly improving the reliability and practicality of the test results.

[0052] Furthermore, the flipping unit 3 also includes a C-axis flipping drive module 32, which is mounted on the side plate 12 and is connected to the flip plate 31 via a transmission connection. The C-axis flipping drive module 32 is used to drive the flip plate 31 to rotate by a set angle. The flipping unit 3 is the core component for realizing the bending action of the material. The flipping unit 3 not only includes a flip plate 31 that can rotate around the C-axis, but also is equipped with a C-axis flipping drive module 32. The C-axis flipping drive module 32 is mounted on the side plate 12 and is tightly connected to the flip plate 31 via a transmission connection. During the test, the C-axis flipping drive module 32 can precisely drive the flip plate 31 to rotate by a set angle according to a preset program and parameters. By controlling the rotation angle and speed of the flip plate 31, various bending trajectories and bending conditions can be simulated to meet the testing requirements of different types of flexible materials. It is worth mentioning that the Z-axis drive module 24, Y-axis drive module 26, and C-axis flipping drive module 32 all have the ability to operate independently. This independent design has significant technical advantages. In practical use, if one drive module fails, it will not affect the operation of the other two drive modules. For example, when the Z-axis drive module 24 fails, the Y-axis drive module 26 and the C-axis flip drive module 32 can still work normally and continue to complete some test tasks; and vice versa. This high degree of independence and fault tolerance greatly improves the reliability and stability of the equipment, reduces test interruptions and equipment downtime caused by drive module failures, and lowers maintenance and production costs.

[0053] From an equipment layout perspective, the Z-axis drive module 24 (also known as a single-drive Z-axis structure) is carefully positioned in the center of the base plate 11. This layout allows the overall width of the testing equipment to be determined solely by the width along the C-axis, reducing the width by more than 200mm compared to traditional layouts. This design optimization brings several positive impacts. First, it reduces the design complexity of the equipment, making its structure more compact and rational, facilitating installation, commissioning, and maintenance. Second, within limited factory space, the reduced equipment width allows for more equipment to be placed per unit area, thus improving space utilization. This means that under the same production conditions, the number of devices can be increased, thereby increasing production capacity.

[0054] Optionally, the bending compensation unit 2 further includes a floating joint 27. One end of the floating joint 27 is connected to the first compensation moving plate 21, and the other end of the floating joint 27 is connected to the output end of the Z-axis drive module 24. In this embodiment, the Z-axis drive module 24 is connected to the first compensation moving plate 21 through the floating joint. The floating joint is a connecting component with special functions. It is not a simple rigid connection, but allows for a certain amount of slight displacement and angular deviation at the connection point. During the bending test, due to the complex and varied stress conditions of the material to be bent, the movement of the first compensation moving plate 21 in the Z-axis direction may be affected by various factors, such as material inhomogeneity and changes in bending speed. At this time, the floating joint can play its unique role. It can automatically adapt to these small changes, absorb errors caused by various factors, and ensure that the power of the Z-axis drive module 24 can be smoothly and accurately transmitted to the first compensation moving plate 21. This connection method effectively avoids stress concentration and transmission errors that may be caused by rigid connections, improves the stability and reliability of transmission, and enables the first compensation moving plate 21 to move in the Z-axis direction according to a predetermined trajectory and accuracy, thereby providing precise vertical compensation for the material to be bent and ensuring the accuracy of the bending test.

[0055] Regarding the selection of drive module types, the Z-axis drive module 24 and the Y-axis drive module 26 can adopt, but are not limited to, lead screw and slide module. Lead screw and slide module is a mature and widely used transmission device with many advantages. First, it has high-precision transmission characteristics. Through the cooperation of the lead screw and nut, it can convert rotational motion into linear motion, and has high transmission accuracy and repeatability. In the bending compensation unit 2, this high-precision transmission capability allows the first compensation moving plate 21 and the second compensation moving plate 22 to move precisely according to the set displacement, thereby achieving accurate compensation for the force during bending. For example, when simulating fine bending of flexible materials, the lead screw and slide module can ensure that the movement error of the moving plates is controlled within a very small range, guaranteeing the reliability of the test results. Second, it has good load-bearing capacity. During the bending test, the first compensation moving plate 21 and the second compensation moving plate 22 need to bear a certain weight, including the fixed plate 23 and a portion of the weight of the material to be bent. The lead screw slide module can stably withstand these loads and maintain smooth and accurate transmission even under load variations. This ensures the normal operation of the bending compensation unit 2 when testing flexible materials of different specifications and weights, improving the equipment's versatility and adaptability. Furthermore, the lead screw slide module boasts advantages such as compact structure, convenient installation, and simple maintenance. Its compact design reduces the overall size of the bending compensation unit 2, facilitating optimized equipment layout and minimizing floor space. Simultaneously, the simple installation and maintenance methods reduce operating costs and maintenance difficulty, enhancing the equipment's operability and economy.

[0056] While the lead screw slide module is the preferred type for the Z-axis drive module 24 and Y-axis drive module 26 in this embodiment, it is not the only option. Depending on different testing requirements and budget constraints, other types of drive modules, such as linear motor modules, can also be selected. Linear motor modules offer advantages such as high speed, high acceleration, and high precision, making them suitable for applications with extremely high testing speed and accuracy requirements. This diverse selection provides flexibility for equipment customization and upgrades, enabling the equipment to better meet the personalized needs of different users.

[0057] Furthermore, this embodiment features a meticulously designed sliding connection structure between the first compensation moving plate 21 and the side plate 12, providing strong support for stable operation and accurate testing of the equipment. A guide rail 13 extending along the Z-axis is cleverly provided on the inner wall of the side plate 12, providing a clear path for the movement of the first compensation moving plate 21. The design of the guide rail 13 fully considers its extensibility in the Z-axis direction, ensuring that the first compensation moving plate 21 can perform stable and accurate linear movement in this direction. A slider 25 is installed on the side wall of the first compensation moving plate 21, forming a tight and flexible sliding connection with the guide rail 13. The slider 25 is designed to match the guide rail 13, and its surface is finely machined with a smooth contact surface, reducing friction with the guide rail 13, lowering energy loss, and making the movement of the first compensation moving plate 21 smoother. Simultaneously, the slider 25 employs an advanced lubrication structure that automatically releases lubricant during movement, further reducing friction and improving the smoothness and lifespan of the movement.

[0058] Specifically, in this embodiment, sliders 25 are installed at each of the four corners of the first compensation moving plate 21. This design of installing sliders 25 at the four corners has significant technical advantages. From a mechanical point of view, the sliders 25 at the four corners can evenly bear the weight of the first compensation moving plate 21 and the components it supports, avoiding skewing or shaking caused by uneven force. During movement, the four sliders 25 contact the corresponding four guide rails 13, forming a stable support and guiding system, enabling the first compensation moving plate 21 to always remain horizontal and move accurately along the Z-axis. Even under heavy loads or high-speed movement, the stability and accuracy of the movement can be guaranteed, reducing test errors caused by movement deviations. Each side plate 12 is equipped with two guide rails 13 extending along the Z-axis, which further improves the movement accuracy of the first compensation moving plate 21. The two guide rails 13 are parallel to each other and spaced a certain distance apart, providing double support and guidance for the first compensation moving plate 21. When the first compensation moving plate 21 moves in the Z-axis direction, the two guide rails 13 can constrain and guide it from different positions, effectively preventing it from twisting or shifting laterally during movement. Compared with the single guide rail 13 design, the double guide rail 13 structure can significantly improve the straightness of movement and repeatability, making the deviation of the first compensation moving plate 21 when it moves to the same position each time extremely small. This ensures the compensation accuracy of the bending compensation unit 2 in the Z-axis direction, thereby improving the testing accuracy of the entire bending trajectory controllable testing equipment.

[0059] Furthermore, in the process of testing the bending performance of flexible materials, how to stably and accurately fix the material to be bent is a key link to ensure the accuracy and reliability of the test results. The bending trajectory controllable testing equipment of this embodiment achieves efficient fixation of the material to be bent through the designed vacuum adsorption fixation structure, providing a strong guarantee for accurate testing. The fixing plate 23 is an important component for fixing the first part of the material to be bent, and the fixing plate 23 has a first cavity designed inside. The fixing plate 23 also has multiple first adsorption holes 231 that are evenly distributed on it and communicate with the first cavity. These first adsorption holes 231 are like tiny "suction cups", which can generate a strong adsorption force when the vacuum adsorption control unit 4 is activated. The flip plate 31 is correspondingly designed with a second cavity 3121 and a second adsorption hole 311 that communicates with the second cavity 3121 for fixing the second part of the material to be bent. This double adsorption surface design fully considers the stress characteristics of the flexible material during the bending process, and can stably fix the material from both ends, avoiding the material from sliding or displacing during the bending process, thereby ensuring the accuracy of the test. The vacuum adsorption control unit 4 in the controllable bending trajectory testing equipment is the core of the entire fixing system. The vacuum adsorption control unit 4 includes a main pipeline 41, whose first end is tightly connected to a vacuum pump, and its second end is connected to the first cavity of the fixed plate 23 and the second cavity 3121 of the flip plate 31, respectively. When the material to be bent needs to be fixed, the vacuum pump starts working, extracting air from the first and second cavities 3121 through the main pipeline 41, creating a negative pressure environment within the cavities. At this time, a strong adsorption force is generated at the first adsorption hole 231 and the second adsorption hole 311, firmly adsorbing the first part of the material to be bent onto the fixed plate 23, and the second part onto the flip plate 31. This vacuum adsorption method has many advantages: it does not cause mechanical damage to the flexible material, maintaining its original properties; at the same time, the adsorption force is evenly distributed, ensuring uniform stress on the material during fixing, avoiding deformation or damage due to excessive local stress.

[0060] For example, the fixed plate 23 and the flip plate 31 in this embodiment have the same internal structure. Taking the flip plate 31 as an example, its structural design further optimizes the vacuum adsorption effect. The flip plate 31 includes a plate body 312 with a second cavity 3121, a sealing sheet 313 (also called a sealing ring), and a sealing plate 314 with an air pipe connector 315. The sealing plate 314 covers the plate body 312, and the sealing sheet 313 is tightly clamped between the contact surfaces of the plate body 312 and the sealing plate 314. This design greatly improves the airtightness of the flip plate 31. In the vacuum adsorption process, good airtightness is a key factor in ensuring the adsorption effect. If the airtightness is poor, outside air will continuously enter the second cavity 3121, causing the negative pressure inside the cavity to be unable to be maintained, and the adsorption force will also weaken accordingly. The combined use of sealing sheet 313 and sealing plate 314 effectively prevents air leakage, ensuring a stable negative pressure environment within the second chamber 3121, thereby guaranteeing the firm adsorption of the second part of the material by the second adsorption hole 311. Furthermore, the air pipe connector 315 facilitates the connection between the main pipeline 41 and the flap 31, making the installation and maintenance of the entire vacuum adsorption system more convenient. In actual testing, this vacuum adsorption fixing structure demonstrated excellent performance. When the material to be bent is firmly adsorbed onto the fixed plate 23 and flap 31, the material remains stable and fixed during the bending operation as the flap 31 rotates around the C-axis, without moving or falling off due to external forces during the bending process. This not only ensures the accuracy of the bending trajectory, allowing the test results to truly reflect the bending performance of the material, but also improves the repeatability and reliability of the test. Simultaneously, due to the simple operation and good fixing effect of this structure, the preparation time before testing is greatly shortened, improving testing efficiency.

[0061] In the field of flexible material bending performance testing, precise fixation of the material to be bent is a core prerequisite for ensuring the accuracy and reliability of test results. Due to the diverse sizes and specifications of the materials to be bent, traditional single-cavity vacuum adsorption structures often fail to meet the fixation requirements of materials of different sizes, easily leading to problems such as wasted gas supply or insufficient adsorption. The bending trajectory controllable testing equipment in this embodiment innovatively adopts a multi-cavity vacuum adsorption system, effectively solving this problem.

[0062] Furthermore, the fixed plate 23 is provided with at least two first cavities, and the flip plate 31 is provided with at least two second cavities 3121. This multi-cavity design is not arbitrary, but based on in-depth consideration of the fixing requirements of materials of different sizes to be bent. In practical applications, the sizes of materials to be bent are diverse, such as the common 6-inch or 8-inch sizes. The required adsorption area and adsorption force distribution for fixing materials of different sizes are different. For smaller materials, if the entire adsorption surface of the fixed plate 23 and the flip plate 31 is used for adsorption, it will not only waste the gas source, but may also lead to insufficient local adsorption force due to the excessive adsorption area, affecting the fixing effect of the material. By setting multiple first cavities and second cavities 3121, the cavities involved in the work can be flexibly selected according to the specific size of the material to be bent. The vacuum adsorption control unit 4 includes at least two branch pipes 42, one end of each branch pipe 42 is connected to the second end of the main pipe 41, and the corresponding first cavity and the corresponding second cavity 3121 are connected to the other end of the corresponding branch pipe 42. This pipeline connection method forms an independent and controllable adsorption network. When it is necessary to fix materials of different sizes to be bent, the number of adsorption holes on the fixed plate 23 and the flip plate 31 can be precisely controlled simply by controlling the corresponding branch pipe 42.

[0063] Taking 6-inch and 8-inch materials to be bent as examples, when fixing 6-inch materials, due to their smaller size, only the branch pipes 42 connected to a portion of the first and second chambers 3121 need to be opened to allow these chambers to participate in the adsorption process. At this time, the negative pressure generated by the vacuum equipment is mainly concentrated on these participating chambers and their corresponding adsorption holes, providing sufficient and uniform adsorption force to ensure stable fixation of the material during testing. For 8-inch materials, more branch pipes 42 are opened, allowing more of the first and second chambers 3121 to be engaged, thereby expanding the adsorption area and meeting the fixation requirements of larger materials.

[0064] This multi-chamber vacuum adsorption system offers significant technical advantages. First, it facilitates the efficient use of gas sources. By precisely controlling the number of chambers involved in the process based on material size, unnecessary pumping operations are avoided, greatly reducing energy consumption of the pump and lowering operating costs. Second, it improves the targeting and effectiveness of adsorption. Materials of different sizes can achieve adsorption areas and forces that match their dimensions, ensuring material stability during bending tests, reducing testing errors caused by insecure material fixation, and improving the accuracy and reliability of test results. Furthermore, the system enhances the versatility and flexibility of the equipment. One device can adapt to the testing needs of materials of various sizes to be bent, eliminating the need for separate fixing devices for different material sizes, reducing procurement and maintenance costs, and improving equipment utilization efficiency.

[0065] For example, at least one branch pipe 42 is provided with a first switching valve 43, which is used to control the opening and closing of the branch pipe 42. In this embodiment, two branch pipes 42 are provided, and the first switching valve 43 (which can be a solenoid valve) is installed on the branch pipe 42 on the left. By controlling the opening and closing of the solenoid valve, the main pipe 41 can be freely switched to one or two paths; when the solenoid valve is de-energized, the branch pipe 42 on the left is disconnected, and the branch pipe 42 on the right is vented, so that only half of the fixed plate 23 and the flip plate 31 can achieve vacuum adsorption to fix 6-inch products; when the solenoid valve is energized, both the branch pipe 42 on the left and the branch pipe 42 on the right are vented, and the fixed plate 23 and the flip plate 31 can achieve vacuum adsorption to fix 8-inch products.

[0066] Optionally, in other embodiments, a second switching valve with multiple control positions may be provided at the connection between the branch pipe 42 and the main pipe 41. The main pipe 41 is selectively connected to at least one branch pipe 42 through the second switching valve. By controlling the position of the second switching valve, the airflow rate of the branch pipe 42 can be adjusted, thereby adjusting the area involved in the adsorption process.

[0067] Furthermore, the load-bearing unit 1 also includes a reinforcing link 14, with both ends of the reinforcing link 14 connected to the two side plates 12 respectively. When the load-bearing unit 1 is subjected to external loads, the reinforcing link 14 can quickly transfer the force to the two side plates 12, allowing the entire load-bearing unit 1 to share these forces, thus avoiding structural deformation or damage caused by excessive local stress. The presence of the reinforcing link 14 significantly improves the overall structural strength of the load-bearing unit 1. During the bending test, the material to be bent is subjected to bending force, which is transferred to the load-bearing unit 1 through components such as the fixed plate 23 and the flip plate 31. Without the reinforcing link 14, the side plates 12 may deform, thereby affecting the relative position and movement accuracy of the fixed plate 23 and the flip plate 31, resulting in deviations in the bending trajectory and inaccurate test results. The reinforcing link 14 acts like a strong bond, firmly connecting the two side plates 12 together, enhancing the rigidity and stability between the side plates 12. It can effectively resist the deformation of the side plate 12 caused by bending force, so that the side plate 12 always remains vertical and stable, thereby ensuring the relative position accuracy between the fixed plate 23 and the flip plate 31 and ensuring the accuracy of the bending trajectory.

[0068] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments. Many other equivalent embodiments may be included without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A bending trajectory controllable testing device, characterized in that, include: The supporting unit (1) includes a base plate (11) and two side plates (12), the two side plates (12) being arranged parallel to each other and spaced apart on both sides of the base plate (11); The bending compensation unit (2) includes a first compensation moving plate (21), a second compensation moving plate (22), and a fixed plate (23). The first compensation moving plate (21) is slidably disposed between the two side plates (12) and can move along the Z-axis. The second compensation moving plate (22) is slidably disposed on the first compensation moving plate (21) and can move along the Y-axis. The fixed plate (23) is fixedly disposed on the second compensation moving plate (22) and is used to fix the first part of the material to be bent. The flipping unit (3) includes a flip plate (31) that can rotate about the C-axis. The flip plate (31) is rotatably disposed between the two side plates (12). The flip plate (31) is used to fix the second part of the material to be bent.

2. The bending trajectory controllable testing device according to claim 1, characterized in that, The bending compensation unit (2) further includes: The Z-axis drive module (24) is disposed on the base plate (11). The Z-axis drive module (24) is connected to the first compensation moving plate (21) in a transmission manner. The Z-axis drive module (24) is used to drive the first compensation moving plate (21) to move along the Z-axis direction.

3. The bending trajectory controllable testing device according to claim 2, characterized in that, The bending compensation unit (2) further includes: A floating connector (27) is provided, one end of which is connected to the first compensation moving plate (21), and the other end of which is connected to the output end of the Z-axis drive module (24).

4. The bending trajectory controllable testing device according to claim 2, characterized in that, The inner wall of the side plate (12) is provided with a guide rail (13) extending along the Z-axis direction, and the side wall of the first compensation moving plate (21) is provided with a slider (25), which is slidably connected to the guide rail (13).

5. The bending trajectory controllable testing device according to claim 2, characterized in that, The bending compensation unit (2) further includes: The Y-axis drive module (26) is disposed on the first compensation moving plate (21). The Y-axis drive module (26) is connected to the second compensation moving plate (22) in a transmission manner. The Y-axis drive module (26) is used to drive the second compensation moving plate (22) to move along the Y-axis direction.

6. The bending trajectory controllable testing device according to claim 1, characterized in that, The flipping unit (3) further includes: A C-axis flip drive module (32) is disposed on the side plate (12). The C-axis flip drive module (32) is connected to the flip plate (31) for transmission. The C-axis flip drive module (32) is used to drive the flip plate (31) to rotate by a set angle.

7. The bending trajectory controllable testing device according to claim 1, characterized in that, The fixed plate (23) has a first cavity, and the fixed plate (23) is provided with a first adsorption hole (231) communicating with the first cavity. The flip plate (31) has a second cavity (3121), and the flip plate (31) is provided with a second adsorption hole (311) communicating with the second cavity (3121). The bending trajectory controllable testing device further includes a vacuum adsorption control unit (4), which includes: The main pipeline (41) is connected at its first end to a vacuum pumping device, and the first cavity and the second cavity (3121) are both connected to the second end of the main pipeline (41).

8. The bending trajectory controllable testing device according to claim 7, characterized in that, The fixed plate (23) is provided with at least two first cavities, the flip plate (31) is provided with at least two second cavities (3121), and the vacuum adsorption control unit (4) includes: At least two branch pipes (42), one end of each branch pipe (42) is connected to the second end of the main pipe (41), and the corresponding first cavity and the corresponding second cavity (3121) are connected to the other end of the corresponding branch pipe (42).

9. The bending trajectory controllable testing device according to claim 8, characterized in that, At least one of the branch pipes (42) is provided with a first switching valve (43), which is used to control the opening and closing of the branch pipe (42).

10. The bending trajectory controllable testing device according to claim 8, characterized in that, A second switching valve with multiple control positions is provided at the connection between the branch pipe (42) and the main pipe (41). The main pipe (41) is selectively connected to at least one of the branch pipes (42) through the second switching valve.

Images