Misalignment bending test equipment

Abstract

This utility model relates to the field of flexible substrate testing technology, and more particularly to a staggered bending test device. The staggered bending test device includes a worktable and two staggered bending devices, which are symmetrically arranged on the worktable at intervals along the X-axis. Each staggered bending device includes an X-axis module, a Z-axis module, and a flipping module. The X-axis module is disposed on the worktable. The X-axis module is driven by the Z-axis module to drive the Z-axis module to move along the X-axis. The flipping module includes a flipping drive and a flip plate. The Z-axis module is driven by the flipping drive to drive the flipping drive to move up and down along the Z-axis. The flipping drive is configured to drive the flip plate to flip between a horizontal and a vertical position around the Y-axis. The flip plates of the two staggered bending devices flip synchronously but in opposite directions. The staggered bending test device can prevent the flexible substrate from cracking due to external force during the staggered bending test, thus improving the accuracy of bending performance measurement.

Description

Technical Field

[0001] This utility model relates to the field of flexible substrate testing technology, and in particular to a device for testing kinetic bending. Background Technology

[0002] Currently, slip bending testing equipment verifies the folding resistance and dimensional stability of flexible substrates (such as ultra-thin glass) through slip bending tests to reduce crease problems. Slip bending tests simulate the deformation of flexible materials under dynamic stress environments (such as shearing, bending, and torsion) to quantify their yield strength, elastic modulus, and fatigue resistance, ensuring that flexible materials maintain functional stability under repeated stress.

[0003] In related technologies, flexible substrates are prone to positional shifts during bending (especially when the bending radius R is too small). The actual U-shaped structure formed after bending deviates significantly from the theoretical U-shaped structure, making the flexible substrate susceptible to tearing under external force during the slip bending test, thus reducing the accuracy of the bending performance measurement of the flexible substrate. Utility Model Content

[0004] The purpose of this invention is to provide a misalignment bending test device to avoid the flexible substrate from shifting position during the bending process, which could cause the flexible substrate to break under external force during the misalignment test, thereby improving the positional accuracy and bending performance measurement accuracy of the flexible substrate after bending.

[0005] To achieve this objective, the technical solution adopted by this utility model is as follows:

[0006] A staggered bending test device includes a worktable and two staggered bending devices, wherein the two staggered bending devices are spaced apart and symmetrically arranged on the worktable along the X-axis; each staggered bending device includes:

[0007] The X-axis module is mounted on the worktable;

[0008] The Z-axis module is connected to the X-axis module in a transmission manner to drive the Z-axis module to move along the X-axis direction;

[0009] A flipping module includes a flipping drive and a flip plate. The Z-axis module is connected to the flipping drive to drive the flipping drive to move up and down along the Z-axis. The flipping drive is configured to drive the flip plate to flip between a horizontal and a vertical position around the Y-axis. The flip plates of the two staggered bending devices flip synchronously in opposite directions so that when the two flip plates are in the horizontal position, they attract and support the flexible substrate to be bent. When the two flip plates are flipped to the vertical position, they attract and clamp the flexible substrate bent into a U-shape.

[0010] As an optional solution, the Z-axis module includes:

[0011] A lifting drive component is installed in the X-axis module;

[0012] The washboard is connected to the output end of the lifting drive unit so that the washboard can be slidably disposed on the X-axis module along the Z-axis direction; the flipping drive unit is disposed on the washboard.

[0013] As an optional solution, the Z-axis module further includes a limiting plate, which is disposed on the corrugated board and located below the flip plate; in the two staggered bending devices, each limiting plate has a limiting surface facing the other limiting plate;

[0014] When the flip plate is flipped to the vertical position, the surface of the flexible substrate adsorbed by the flip plate is coplanar with the limiting surface of the corresponding limiting plate, and the flexible substrate, which is bent into a U-shape, is attached and sandwiched between the limiting surfaces of the two limiting plates.

[0015] As an optional solution, the X-axis module includes:

[0016] A horizontal drive component is disposed on the worktable;

[0017] A platform is provided, the lifting drive is disposed on the platform, the output end of the horizontal drive is connected to the platform, and the horizontal drive is configured to synchronously drive the platform to move along the X-axis direction when the flip plate flips from the horizontal position to the vertical position.

[0018] As an optional solution, one of the frame and the worktable is provided with a first slide rail, and the other of the frame and the worktable is provided with a first slider. The first slide rail extends along the X-axis direction and slides in cooperation with the first slider.

[0019] As an optional solution, one of the frame and the washboard is provided with a second slide rail, and the other of the frame and the washboard is provided with a second slider. The second slide rail extends along the Z-axis direction and slides in cooperation with the second slider.

[0020] As an optional solution, the flip module further includes:

[0021] A flip-up frame, wherein the flip plate is disposed on the flip-up frame;

[0022] A drive shaft extends along the Y-axis and its two ends are connected to the tilting frame. The output end of the tilting drive is connected to the drive shaft.

[0023] As an optional solution, the flipping module further includes a bearing housing and a bearing installed in the bearing housing. The bearing housing is disposed in the Z-axis module, and the drive shaft is rotatably mounted on the inner ring of the bearing.

[0024] As an optional solution, the flipping module also includes a vacuum generator, and the upper surface of the flip plate in a horizontal position has air holes, and the negative pressure port of the vacuum generator is connected to the air holes; the flip plate vacuum adsorbs the flexible substrate through the air holes.

[0025] As an optional embodiment, the width of the flap is u, the width of the flexible substrate is a, the rotation center of the flap when it is in the horizontal position is H, the distance from the rotation center H to the flap is d, the flipping angle of the flap is θ; the distance between the two side walls of the flexible substrate bent into a U-shape is b; and the movement trajectory of the flap along the X-axis direction when the flipping angle is θ is S.

[0026] but

[0027] The beneficial effects of this utility model are as follows:

[0028] The proposed offset bending test device comprises two offset bending devices symmetrically arranged at intervals along the X-axis on a worktable. When the two flaps are in a horizontal position, they adsorb and support the flexible substrate. The two flaps rotate synchronously in opposite directions to bend the flexible substrate into a U-shape, which is then sandwiched between the two flaps. A Z-axis module drives a rotating drive component to move up and down along the Z-axis to perform offset testing on the U-shaped flexible substrate. When the flaps rotate from a horizontal to a vertical position, the two X-axis modules drive their corresponding Z-axis modules to move synchronously along the X-axis, causing the two flaps to move away from each other and then closer together. This adjusts the bending radius of the U-shaped flexible substrate and ensures that the flaps remain tangent to the surface of the flexible substrate during bending, preventing positional displacement and thus avoiding breakage due to external force during offset testing. This improves the positional accuracy and bending performance measurement accuracy of the bent flexible substrate. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of the bending test device provided in this embodiment of the utility model;

[0030] Figure 2 This is a schematic diagram of the workbench and two staggered bending devices provided in this embodiment of the utility model;

[0031] Figure 3 This is a schematic diagram of the structure of the offset bending device provided in this embodiment of the utility model;

[0032] Figure 4 This is a schematic diagram illustrating the structural changes of the flap and the flexible substrate during the bending process provided in this embodiment of the utility model.

[0033] The component names and labels in the diagram are as follows:

[0034] 100. Flexible substrate; 10. Worktable; 101. First slide rail; 20. Protective cover; 30. Chassis;

[0035] 1. X-axis module; 11. Horizontal drive component; 12. Stand; 121. Slide table; 122. Vertical plate; 123. Rib plate; 13. First slider; 14. Second slide rail;

[0036] 2. Z-axis module; 21. Lifting drive component; 22. Washboard; 23. Limiting plate; 230. Limiting surface; 24. Second slider;

[0037] 3. Flipping module; 31. Flipping drive unit; 32. Flip plate; 33. Flipping frame; 34. Drive shaft; 35. Bearing seat. Detailed Implementation

[0038] To make the technical problem solved by this utility model, the technical solution adopted, and the technical effect achieved clearer, the technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely for explaining this utility model and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to this utility model are shown in the accompanying drawings, not all of them.

[0039] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0040] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0041] In the description of this embodiment, the terms "upper," "lower," "right," and "left," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0042] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0043] In related technologies, flexible substrates are prone to positional displacement during bending, resulting in a large positional deviation between the actual U-shaped structure formed after bending and the theoretical U-shaped structure. This makes the flexible substrates susceptible to tearing under external force during the slip bending test, reducing the accuracy of the bending performance measurement of the flexible substrates.

[0044] To solve the above problems, such as Figure 1 and Figure 2As shown, this embodiment proposes a staggered bending test device, which includes a worktable 10 and two staggered bending devices. The two staggered bending devices are spaced apart and symmetrically arranged on the worktable 10 along the X-axis direction. Each staggered bending device includes an X-axis module 1, a Z-axis module 2, and a flipping module 3. The X-axis module 1 is disposed on the worktable 10. The X-axis module 1 is driven to the Z-axis module 2 to drive the Z-axis module 2 to move along the X-axis direction (left-right direction in the figure). The flipping module 3 includes a flipping drive 31 and a flip plate 32. The Z-axis module 2 is driven to the flipping drive 31 to drive the flipping drive 31 to move up and down along the Z-axis direction (up and down direction in the figure). The flipping drive 31 is configured to drive the flip plate 32 to flip between a horizontal and a vertical position around the Y-axis direction (front and back direction in the figure). The flip plates 32 of the two staggered bending devices flip synchronously and in opposite directions, so that when the two flip plates 32 are in the horizontal position, they adsorb and support the flexible substrate 100 to be bent, and when the two flip plates 32 are flipped to the vertical position, they adsorb and clamp the flexible substrate 100 bent into a U shape.

[0045] In this embodiment, two staggered bending devices are spaced apart and symmetrically arranged on the worktable 10 along the X-axis, so that when the two flip plates 32 are in the horizontal position, they adsorb and support the flexible substrate 100. The two flip plates 32 rotate synchronously and in opposite directions to bend the flexible substrate 100 into a U-shape, and the U-shaped flexible substrate 100 is sandwiched between the two flip plates 32. The Z-axis module 2 drives the flipping drive 31 to move up and down along the Z-axis to realize the staggered test of the U-shaped flexible substrate 100. When the flip plate 32 flips from a horizontal position to a vertical position, the two X-axis modules 1 drive the corresponding Z-axis modules 2 to move synchronously along the X-axis direction, so that the two flip plates 32 move away from each other and then move closer to each other along the X-axis direction. This is to adjust the bending radius of the flexible substrate 100 that is bent into a U-shape, and to keep the flip plate 32 tangent to the surface of the flexible substrate 100 during the bending process. This prevents the flexible substrate 100 from shifting position during the bending process, thereby preventing the flexible substrate 100 from cracking due to external force during the misalignment test. This improves the positional accuracy of the flexible substrate 100 after bending and the measurement accuracy of the bending performance.

[0046] like Figure 1 As shown, the staggered bending test equipment also includes a chassis 30 and a protective cover 20. A workbench 10 is mounted on the top of the chassis 30, and the protective cover 20 is mounted on the workbench 10. The protective cover 20 has a split left-right structure, with two staggered bending devices located between the protective cover 20. In this embodiment, the flexible substrate 100 is ultra-thin glass. Of course, the flexible substrate 100 can also be other flexible products, such as flexible circuit boards.

[0047] In this embodiment, the slip bending test device first bends the flexible substrate 100 into a U-shape, and then performs a slip test on the bent flexible substrate 100 to measure its bending performance. During the bending process, the flexible substrate 100 to be bent is first placed on the upper surface of two horizontally positioned flaps 32. The two flaps 32 jointly adhere and fix the flexible substrate 100. Then, two flipping drive members 31 synchronously drive the flaps 32 to flip in opposite directions, causing the flaps 32 to flip 90° from the horizontal position to the vertical position. While the flip plate 32 is flipped, the two X-axis modules 1 drive the corresponding Z-axis modules 2 to move synchronously along the X-axis direction, so that the two flip plates 32 move away from each other and then move closer to each other along the X-axis direction. This adjusts the bending radius R of the flexible substrate 100, which is bent into a U-shape, so that the flexible substrate 100 is not subjected to any external tensile force and forms a U-shaped structure that tends to be ideal. This enables the flexible material to be tested for misalignment at any value of R, so that the parameters of the misalignment test can be fed back to the actual production of the flexible substrate 100, thereby adjusting the production parameters of the flexible substrate 100 and improving the production quality and delivery efficiency of the flexible substrate 100.

[0048] like Figure 2 and Figure 3 As shown, the Z-axis module 2 includes a lifting drive 21 and a washboard 22. The lifting drive 21 is disposed on the X-axis module 1. The output end of the lifting drive 21 is connected to the washboard 22, so that the washboard 22 is slidably disposed on the X-axis module 1 along the Z-axis direction. The flipping drive 31 is disposed on the washboard 22. The lifting drive 21 drives the washboard 22 to move the flipping module 3 up and down along the Z-axis direction, so that the washboard 22 and the flipping module 3 reciprocate up and down in a cyclic motion along the Z-axis direction to complete the slippage test of the flexible substrate 100. The lifting drive 21 is a linear motor. Linear motors have a simple structure, high control precision, and are easy to install and use.

[0049] Specifically, the lifting drive 21 drives the washboard 22 to rise to its maximum height along the Z-axis, allowing the washboard 22 to extend out of the protective cover 20. This enables the flexible substrate 100 to be placed on or removed from the two flip plates 32, thus achieving automatic loading and unloading of the flexible substrate 100. After the flexible substrate 100 is bent into place, the lifting drive 21 can also drive the washboard 22 to descend a certain height along the Z-axis. This not only enables the flip plates 32 to reciprocate up-and-down cyclically along the Z-axis but also prevents the flip plates 32 from colliding with the protective cover 20 during the flexural testing process, improving the safety of the flexural testing process.

[0050] like Figure 2 and Figure 3As shown, the Z-axis module 2 also includes a limiting plate 23, which is disposed on the corrugated board 22 and located below the flip plate 32. In the two staggered bending devices, each limiting plate 23 has a limiting surface 230 facing the other limiting plate 23. When the flip plate 32 is flipped to the vertical position, the surface of the flexible substrate 100 adsorbed by the flip plate 32 is coplanar with the limiting surface 230 of the corresponding limiting plate 23, and the U-shaped flexible substrate 100 is attached and sandwiched between the limiting surfaces 230 of the two limiting plates 23. By symmetrically arranging two limiting plates 23 along the X-axis direction, the contact area between the staggered bending device and the U-shaped flexible substrate 100 is increased, and the flexible substrate 100 is limited along the X-axis direction, avoiding deformation of the two side walls of the U-shaped flexible substrate 100, so that the flexible substrate 100 always maintains the ideal U-shaped structure. It should be noted that the limiting surface 230 of the limiting plate 23 is a complete plane and has a smooth surface, and will not generate any external force other than friction between it and the flexible substrate 100, thus preventing the flexible substrate 100 from being pulled by external force during the twisting and bending process.

[0051] like Figure 2 and Figure 3 As shown, the X-axis module 1 includes a horizontal drive unit 11 and a frame 12. The horizontal drive unit 11 is mounted on the worktable 10. The lifting drive unit 21 is mounted on the frame 12. The output end of the horizontal drive unit 11 is connected to the frame 12. The horizontal drive unit 11 is configured to synchronously drive the frame 12 to move along the X-axis direction when the flip plate 32 flips from a horizontal position to a vertical position. The horizontal drive unit 11 drives the Z-axis module 2 and the flipping module 3 to move left and right along the X-axis direction through the frame 12. The driving directions of the horizontal drive units 11 in the two staggered bending devices are opposite, so that the two flip plates 32 move closer or further apart along the X-axis direction. The aforementioned horizontal drive unit 11 is a linear motor. Linear motors have a simple structure, high control precision, and are easy to install and use.

[0052] Specifically, the frame 12 includes a slide 121, a vertical plate 122, and a rib 123. The vertical plate 122 is vertically arranged on one side of the slide 121 along the X-axis, and the rib 123 is arranged between the vertical plate 122 and the slide 121 to improve the structural strength and stability of the frame 12. The lifting drive component 21 is arranged on the slide 121, and the corrugated board 22 is slidably arranged on the vertical plate 122, realizing a compact arrangement of the staggered bending device.

[0053] like Figure 2 and Figure 3As shown, one of the frame 12 and the worktable 10 is provided with a first slide rail 101, and the other of the frame 12 and the worktable 10 is provided with a first slider 13. The first slide rail 101 extends along the X-axis and slides in engagement with the first slider 13. This sliding engagement between the first slide rail 101 and the first slider 13 improves the stability and reliability of the frame 12's movement along the X-axis, preventing positional displacement of the frame 12 that could lead to deformation of the bent flexible substrate 100. One of the frame 12 and the washboard 22 is provided with a second slide rail 14, and the other of the frame 12 and the washboard 22 is provided with a second slider 24. The second slide rail 14 extends along the Z-axis and slides in engagement with the second slider 24. This sliding engagement between the second slide rail 14 and the second slider 24 improves the stability and reliability of the washboard 22's movement along the Z-axis, preventing positional displacement of the washboard 22 and the flip plate 32 that could lead to deformation of the bent flexible substrate 100.

[0054] In this embodiment, the upper surface of the workbench 10 is provided with a first slide rail 101, and the slide 121 of the frame 12 is provided with a first slider 13. The upright plate 122 of the frame 12 is provided with a second slide rail 14, and the washboard 22 is provided with a second slider 24. In other embodiments, the upper surface of the workbench 10 is provided with a first slider 13, and the slide 121 of the frame 12 is provided with a first slide rail 101. The upright plate 122 of the frame 12 is provided with a second slider 24, and the washboard 22 is provided with a second slide rail 14. The number of the first slide rail 101, the first slider 13, the second slide rail 14, and the second slider 24 is not specifically limited.

[0055] like Figure 2 and Figure 3 As shown, the flipping module 3 also includes a flipping frame 33 and a drive shaft 34, with the flip plate 32 disposed on the flipping frame 33. The drive shaft 34 extends along the Y-axis and both ends of the drive shaft 34 are connected to the flipping frame 33. The output end of the flipping drive unit 31 is connected to the drive shaft 34. The flipping drive unit 31 drives the drive shaft 34 to rotate around the Y-axis, so that the flipping frame 33 and the flip plate 32 rotate synchronously between horizontal and vertical positions via the drive shaft 34. The aforementioned flipping drive unit 31 is a rotary motor, and the output end of the rotary motor is connected to the drive shaft 34.

[0056] Specifically, such as Figure 3 As shown, the flipping module 3 also includes a bearing housing 35 and a bearing installed within the bearing housing 35. The bearing housing 35 is located in the Z-axis module 2, and the drive shaft 34 is rotatably mounted on the inner ring of the bearing. By setting the bearing housing 35 to support the drive shaft 34 through the bearing, the stability and reliability of the drive shaft 34 and the flip plate 32 during the flipping process are improved. In this embodiment, the washboard 22 is provided with two bearing housings 35 spaced apart along the Y-axis direction. The two ends of the drive shaft 34 pass through the inner ring of the corresponding bearing housing 35 and are connected to the flipping frame 33 to achieve a compact installation of the flipping module 3.

[0057] In this embodiment, the flipping module 3 also includes a vacuum generator. The upper surface of the flip plate 32, located in a horizontal position, has air holes, and the negative pressure port of the vacuum generator communicates with the air holes. The flip plate 32 vacuum-adsorbs the flexible substrate 100 through the air holes. By adsorbing and fixing the flexible substrate 100 through vacuum, the flip plate 32 not only improves the stability and efficiency of the adsorption but also avoids mechanical damage (such as scratches or indentations) to the surface of the flexible substrate 100, thus enhancing the protection of the flexible substrate 100.

[0058] In this embodiment, the upper surface of the flip plate 32 is provided with a plurality of air holes in an array and engravings or lines arranged along the array direction of the air holes, so that flexible substrates 100 of different sizes can be placed on the flip plate 32 according to the corresponding engravings or lines, thereby realizing the rapid alignment and feeding of flexible substrates 100.

[0059] like Figure 4 As shown, when the bending test equipment starts working, the flip plate 32 and the flexible substrate 100 adsorbed on the flip plate 32 remain tangential. During the process of flip plate 32 flipping from the horizontal position to the vertical position, the two flip plates 32 will form two symmetrical motion trajectories. The rotation center of the flip plate 32 (i.e., the axis of the transmission shaft 34) is H, and H moves left and right along the X-axis.

[0060] Specifically, the width of the flap 32 is u, the width of the flexible substrate 100 is a, the rotation center of the flap 32 when it is in a horizontal position is H, the distance from the rotation center H to the flap 32 is d, the flipping angle of the flap 32 is θ; the distance between the two side walls of the flexible substrate 100 bent into a U shape is b; the movement trajectory of the flap 32 along the X-axis when the flipping angle is θ is S.

[0061] but

[0062] It should be noted that when the bending radius of the flexible substrate 100 is set to R, firstly, while the flip plate 32 is flipped, the X-axis module 1 drives the Z-axis module 2 and the flipping module 3 to move along the X-axis direction, and the driving directions of the two X-axis modules 1 are opposite, so that the two flip plates 32 move away from each other or away from each other until the flexible substrate 100 is bent into a U-shape. At this time, the distance between the two sidewalls of the flexible substrate 100 bent into a U-shape is b. If b ≠ 2R, then the distance between the two flip plates 32 along the X-axis direction is adjusted by the X-axis module 1 until b = 2R, then the flexible substrate 100 is bent into place, and then the misalignment test can be performed.

[0063] For ease of understanding, the detailed working process of the offset bending test equipment is as follows:

[0064] The misalignment bending test equipment is powered on and various parameters are set. For example, the bending radius R of the flexible substrate 100 is set to 1mm, the width a of the flexible substrate 100 is set to 400mm, and b is set to 200 / π.mm. After the system calculates the motion data, pressing the initialization button will automatically reset each mechanism to the calculated position. The left and right Z-axis modules 2 drive the left and right flip plates 32 to rise to their highest positions, with the left and right flip plates 32 in a horizontal and coplanar position. A flexible substrate 100 of a specific size (such as ultra-thin glass) is aligned with the engraved lines on the upper surface of the flip plate 32, ensuring the surface of the flexible substrate 100 is flat. The foot switch of the misalignment bending test equipment is pressed, and the flip plate 32 vacuum-adsorbs the flexible substrate 100. The start button of the misalignment bending test equipment is then pressed, and the equipment will automatically run the test.

[0065] First, the two left and right flip plates 32, driven by their respective flipping drive units 31, flip inward in a mirror-symmetrical manner. Simultaneously, the two left and right X-axis modules 1 drive their respective platforms 12 to move outward along the X-axis (the two flip plates 32 move away from each other) and then inward (the two flip plates 32 move closer to each other), until the flip plates 32 flip from a horizontal position to a vertical position. At this point, the two left and right flip plates 32 and their corresponding limiting surfaces 230 of the limiting plates 23 are on the same plane, and the distance between the two flip plates 32 along the X-axis is also b. The flexible substrate 100 is clamped between the two left and right flip plates 32 and the two left and right limiting plates 23, forming a U-shape. Then, the two flip plates 32 remain stationary, and the two left and right X-axis modules 1 drive their respective platforms 12 to move along the X-axis until the distance between the two flip plates 32 along the X-axis is 2R. The two lifting drive units 21 simultaneously drive the corresponding washboards 22 downward to a preset position. The two washboards 22 perform a misalignment test according to a preset misalignment method and number of misalignments until the misalignment operation is completed. Throughout the entire twisting and bending test, the flexible substrate 100 was not subjected to external force and was not prone to breakage, so the measured bending performance was true and reliable.

[0066] The above embodiments merely illustrate the basic principles and characteristics of this utility model. This utility model is not limited to the above embodiments. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A bending test device, characterized in that, The system includes a worktable (10) and two staggered bending devices, the two staggered bending devices being spaced apart and symmetrically arranged on the worktable (10) along the X-axis; the staggered bending devices include: X-axis module (1) is disposed on the worktable (10); Z-axis module (2), the X-axis module (1) is connected to the Z-axis module (2) for driving the Z-axis module (2) to move along the X-axis direction; The flipping module (3) includes a flipping drive (31) and a flip plate (32). The Z-axis module (2) is connected to the flipping drive (31) to drive the flipping drive (31) to move up and down along the Z-axis. The flipping drive (31) is configured to drive the flip plate (32) to flip between a horizontal position and a vertical position around the Y-axis. The flip plates (32) of the two staggered bending devices flip synchronously and in opposite directions, so that when the two flip plates (32) are in the horizontal position, they adsorb and support the flexible substrate (100) to be bent. When the two flip plates (32) are flipped to the vertical position, they adsorb and clamp the flexible substrate (100) bent into a U-shape.

2. The offset bending test device according to claim 1, characterized in that, The Z-axis module (2) includes: A lifting drive component (21) is disposed on the X-axis module (1); The washboard (22) is connected to the output end of the lifting drive (21) so that the washboard (22) is slidably disposed on the X-axis module (1) along the Z-axis direction; the flipping drive (31) is disposed on the washboard (22).

3. The offset bending test device according to claim 2, characterized in that, The Z-axis module (2) also includes a limiting plate (23), which is disposed on the corrugated board (22) and located below the flip plate (32); in the two staggered bending devices, each limiting plate (23) has a limiting surface (230) facing the other limiting plate (23); When the flip plate (32) flips to the vertical position, the surface of the flexible substrate (100) adsorbed by the flip plate (32) is coplanar with the limiting surface (230) of the corresponding limiting plate (23), and the flexible substrate (100) bent into a U-shape is attached and sandwiched between the limiting surfaces (230) of the two limiting plates (23).

4. The offset bending test device according to claim 2, characterized in that, The X-axis module (1) includes: A horizontal drive unit (11) is disposed on the worktable (10); A platform (12) is provided on the platform (12), and the output end of the horizontal drive (11) is connected to the platform (12). The horizontal drive (11) is configured to synchronously drive the platform (12) to move along the X-axis direction when the flip plate (32) flips from the horizontal position to the vertical position.

5. The offset bending test device according to claim 4, characterized in that, One of the frame (12) and the worktable (10) is provided with a first slide rail (101), and the other of the frame (12) and the worktable (10) is provided with a first slider (13). The first slide rail (101) extends along the X-axis direction and slides in cooperation with the first slider (13).

6. The offset bending test device according to claim 4, characterized in that, One of the platform (12) and the washboard (22) is provided with a second slide rail (14), and the other of the platform (12) and the washboard (22) is provided with a second slider (24). The second slide rail (14) extends along the Z-axis direction and slides in cooperation with the second slider (24).

7. The offset bending test device according to claim 1, characterized in that, The flipping module (3) also includes: A flip frame (33), wherein the flip plate (32) is disposed on the flip frame (33); A drive shaft (34) extends along the Y-axis and both ends of the drive shaft (34) are connected to the flipping frame (33). The output end of the flipping drive (31) is connected to the drive shaft (34).

8. The offset bending test device according to claim 7, characterized in that, The flipping module (3) also includes a bearing housing (35) and a bearing installed in the bearing housing (35). The bearing housing (35) is located in the Z-axis module (2), and the transmission shaft (34) is rotatably installed on the inner ring of the bearing.

9. The offset bending test device according to claim 1, characterized in that, The flipping module (3) also includes a vacuum generator. The flip plate (32) has air holes on its upper surface in a horizontal position. The negative pressure port of the vacuum generator is connected to the air holes. The flip plate (32) vacuum adsorbs the flexible substrate (100) through the air holes.

10. The offset bending test device according to any one of claims 1 to 9, characterized in that, The width of the flap (32) is u, the width of the flexible substrate (100) is a, the rotation center of the flap (32) in the horizontal position is H, the distance from the rotation center H to the flap (32) is d, the flip angle of the flap (32) is θ; the distance between the two side walls of the flexible substrate (100) bent into a U shape is b; the movement trajectory of the flap (32) along the X-axis direction when the flip angle is θ is S; but

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