Uniaxial bending strength detection equipment for glass cover plate for display

Abstract

The embodiment of the invention provides uniaxial bending strength detection equipment for a glass cover plate for a display. The detection equipment comprises a support frame, a pressing device, a bearing platform and a recording device, the supporting frame comprises a bottom supporting structure and a top supporting structure connected with the bottom supporting structure, the bottom supporting structure is provided with a supporting area, and the top supporting structure is provided with a downward pressing mounting area corresponding to the supporting area; the bearing platform is mounted in the supporting area and is used for bearing a to-be-tested glass cover plate; the pressing device and the bearing platform are oppositely arranged at an interval and are mounted in the pressing mounting area; the pressing device is provided with a single-shaft part for pressing the glass cover plate to be tested; the recording device is arranged on the supporting frame and used for recording the bending process of the to-be-tested glass cover plate. According to the device, the bending strength of the glass cover plate can be detected. Through the collaborative design of the bottom support structure and the top support structure of the support frame, the spatial precise alignment of the bearing platform and the pressing device is realized, and the direction stability of the force application of the single shaft part in the test process is ensured.

Description

Technical Field

[0001] The embodiments of the present disclosure belong to the technical field of glass cover plate bending strength testing equipment, and specifically relate to a uniaxial bending strength testing equipment for a glass cover plate for a display. Background Art

[0002] Outdoor mobile devices often have a display panel capable of displaying information. Since the surface of the display panel is relatively fragile, a glass cover is often required to protect the display panel from impact or scratches.

[0003] Strength testing of the protective glass cover of the display panel is a necessary test to ensure that such glass cover can have its protective function.

[0004] Therefore, providing a device capable of performing strength testing on a glass cover plate has become a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0005] The embodiments of the present disclosure aim to solve at least one of the technical problems existing in the prior art and provide a uniaxial bending strength testing device for a glass cover plate for a display.

[0006] One aspect of an embodiment of the present disclosure provides a uniaxial bending strength testing device for a glass cover plate for a display, comprising: a support frame, a pressing device, a bearing platform, and a recording device; The support frame includes a bottom support structure and a top support structure connected to the bottom support structure, the bottom support structure has a support area, and the top support structure is provided with a downward pressure installation area corresponding to the support area; the carrying platform is installed in the support area and is used to carry the glass cover plate to be tested; The pressing device is arranged relative to the carrying platform and installed in the pressing installation area. The pressing device has a single-axis part for pressing down the glass cover plate to be tested. The recording device is arranged on the support frame and is used to record the bending process of the glass cover plate to be tested.

[0007] Optionally, the top support structure includes a support connected to the bottom support structure, and a downward pressing mounting plate connected to the support and arranged relative to the bottom support structure, wherein the downward pressing mounting area is provided on the downward pressing mounting plate corresponding to the support area position.

[0008] Optionally, a mounting through hole is provided in the pressing-down mounting area of the pressing-down mounting plate, and the pressing-down device is passed through the mounting through hole.

[0009] Optionally, the pressing device includes a pressure cylinder provided on the top surface of the pressing mounting plate, a pressure sensing portion and the single-axis portion, and a piston rod of the pressure cylinder passes through the mounting through hole; Wherein, along the axial direction of the piston rod of the pressure cylinder, the pressure sensing portion is connected to the piston rod, and the single-axis portion is connected to the pressure sensing portion.

[0010] Optionally, the pressure sensing portion is columnar and is coaxially arranged with the piston rod of the pressure cylinder, and the radial dimension of the pressure sensing portion is greater than the radial dimension of the piston rod.

[0011] Optionally, the single-axis portion includes a pressure transmitting platform connected to the pressure sensing portion, and an arc-shaped bonding axis portion protruding from a surface of the pressure transmitting platform away from the pressure sensing portion.

[0012] Optionally, the supporting platform includes a pad installed in the supporting area, a test box arranged on the top of the pad, and a supporting structure; the top of the test box has an opening connected to its interior, and the supporting structure is arranged at the opening of the test box and is used to support the glass cover to be tested.

[0013] Optionally, the support structure includes two single-axis members arranged at a relative interval at the opening of the test box, wherein the single-axis portion is projected in a direction perpendicular to the top surface of the pad and is located between the projections of the two single-axis members of the support structure.

[0014] Optionally, the single-axis member includes a pressure-bearing platform provided at the opening of the test box, and an arc-shaped bonding protrusion protruding from a surface of the pressure-bearing platform facing away from the test box.

[0015] Optionally, the recording device includes an L-shaped bracket arranged on the bottom support structure, and a camera module fixed to the L-shaped bracket.

[0016] The beneficial effects of the embodiments of the present disclosure include: In the present invention, the equipment of this solution can be used to complete the bending strength test of the glass cover plate. In addition, through the coordinated design of the bottom support structure and the top support structure of the support frame, the spatial precise alignment of the bearing platform and the downward pressure device is achieved, ensuring the directional stability of the force applied by the uniaxial part during the test. The bearing platform in the bottom support area can fix the glass cover plate to be tested to avoid test deviation; the downward pressure installation area on the top makes the downward pressure of the uniaxial part act evenly on the center of the glass cover plate, thereby improving the reliability of the test results. The uniaxial part design of the downward pressure device specifically realizes the uniaxial bending test requirements of the glass cover plate, which can accurately reflect the strength characteristics of the glass cover plate under bending stress in a single direction, avoid interference from other directions, and provide special data support for the bending performance of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a device for testing the uniaxial bending strength of a display glass cover according to an embodiment of the present disclosure; Figure 2This is a partial structural schematic diagram of a uniaxial bending strength testing device for a display glass cover according to an embodiment of the present disclosure; Figure 3 Schematic diagram of the structure of a pressing device according to an embodiment of the present disclosure; Figure 4 Schematic diagram of the structure of a single-axis portion according to an embodiment of the present disclosure; Figure 5 This is a schematic structural diagram of a support according to an embodiment of the present disclosure; Figure 6 This is a schematic structural diagram of an L-shaped bracket according to an embodiment of the present disclosure; Figure 7 This is a structural diagram of a carrying platform according to an embodiment of the present disclosure; Figure 8 Schematic diagram of the structure of a single shaft member according to an embodiment of the present disclosure.

[0018] In the figure, 10, glass cover; 1, support frame; 2, pressing device; 3, bearing platform; 4, recording device; 11, bottom supporting structure; 12, top supporting structure; 21, single-axis part; 22, pressure cylinder; 23, pressure sensing part; 121, support; 122, pressing mounting plate; 123, mounting through hole; 221, piston rod; 211, pressure transmission platform; 212, arc-shaped bonding shaft; 31, pad; 32, test box; 33, supporting structure; 321, opening; 331, pressure platform; 332, arc-shaped bonding protrusion; 41, L-shaped bracket; 42, camera module; 411, bottom support plate; 412, vertical support plate; 413, mounting hole; 1211, pad; 1212, bracket. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the technical solutions of the present disclosure, the present disclosure is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0020] The following is a further detailed description of the embodiments of the present application in conjunction with the accompanying drawings and examples. The detailed descriptions and drawings of the following examples are used to illustrate the principles of the present application, but are not used to limit the scope of the present application, that is, the present application is not limited to the described embodiments. In the description of the present application, it should be noted that, unless otherwise specified, the meaning of "multiple" is more than two; the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inside", "outside", etc. is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. "Vertical" is not perpendicular in the strict sense, but is within the allowable error range. "Parallel" is not parallel in the strict sense, but is within the allowable error range.

[0021] It should also be noted that, in the description of this application, unless otherwise specified or limited, the terms "installed," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0022] like Figure 1-3 As shown, a uniaxial bending strength testing device for a glass cover plate for a display is provided. The bending strength testing device includes a support frame 1, a pressing device 2, a bearing platform 3 and a recording device 4.

[0023] The support frame 1 includes a bottom support structure 11 and a top support structure 12 connected to the bottom support structure 11. The bottom support structure 11 has a support area (not shown in the figure), and the top support structure 12 is provided with a downward pressure installation area (not shown in the figure) corresponding to the support area. The carrying platform 3 is installed in the supporting area and is used to carry the glass cover plate 10 to be tested.

[0024] The pressing device 2 is arranged relative to the carrying platform 3 and installed in the pressing installation area. The pressing device 2 has a single-axis portion 21 for pressing down the glass cover plate 10 to be tested. The recording device 4 is arranged on the support frame 1 to record the bending process of the glass cover plate 10 to be tested.

[0025] In the present invention, the equipment of this solution can complete the bending strength test of the glass cover plate 10. Furthermore, through the coordinated design of the bottom support structure 11 and the top support structure 12 of the support frame 1, precise spatial alignment of the support platform 3 and the downward pressure device 2 is achieved, ensuring the directional stability of the force applied by the uniaxial portion 21 during testing. The support platform 3 in the bottom support area can fix the glass cover plate 10 under test, preventing test deviation; the downward pressure mounting area at the top ensures that the downward pressure of the uniaxial portion 21 is evenly applied to the center of the glass cover plate 10, improving the reliability of the test results.

[0026] The uniaxial portion 21 of the pressing device 2 is designed to specifically meet the uniaxial bending test requirements of the glass cover plate 10, which can accurately reflect the strength characteristics of the glass cover plate 10 under bending stress in a single direction, avoid interference in other directions, and provide special data support for the product's bending resistance.

[0027] In some embodiments, the top support structure 12 includes a support 121 connected to the bottom support structure 11, and a downward pressing mounting plate 122 connected to the support 121 and arranged relative to the bottom support structure 11, wherein the downward pressing mounting area is provided on the downward pressing mounting plate 122 corresponding to the support area position.

[0028] In the present invention, the spacing design between the downward pressing mounting plate 122 and the bottom support structure 11 not only ensures spatial isolation between the downward pressing device 2 and the supporting platform 3 (to prevent interference), but also ensures that the downward pressure of the single-axis portion 21 acts perpendicularly on the center of the glass cover plate 10 through the positional correspondence between the downward pressing mounting plate 122 and the supporting area, thereby improving the geometric consistency between the force application axis and the load direction of the glass cover plate 10.

[0029] In some embodiments, a mounting hole 123 is defined in the pressing installation area of the pressing installation plate 122 , and the pressing device 2 is passed through the mounting hole 123 .

[0030] In some embodiments, the pressing device 2 includes a pressure cylinder 22 disposed on the top surface of the pressing mounting plate 122, a pressure sensing portion 23, and the single-axis portion 21. The piston rod 221 of the pressure cylinder 22 passes through the mounting through hole 123. It is understood that the pressure sensing portion 23 is a component integrated with a pressure sensor.

[0031] In which, along the axial direction of the piston rod 221 of the pressure cylinder 22 , the pressure sensing portion 23 is connected to the piston rod 221 , and the single-axis portion 21 is connected to the pressure sensing portion 23 .

[0032] In the present invention, a linear force transmission chain is formed by inserting the piston rod 221 of the pressure cylinder 22 through the mounting hole 123 of the downward pressure mounting plate 122, and connecting the pressure sensing portion 23 and the single-axis portion 21 in series along the axial direction of the piston rod 221. This design ensures that the downward pressure acts strictly vertically on the center of the glass cover plate 10, eliminating the lateral force component or torque interference that may be introduced by traditional multi-joint transmission mechanisms. This allows the pressure sensor to capture only pure axial load data, significantly improving test accuracy.

[0033] Furthermore, the pressure sensing portion 23 is directly and rigidly connected axially to the piston rod 221, significantly shortening the force signal transmission path and reducing mechanical hysteresis. Combined with the radial limiting effect of the mounting hole 123 on the piston rod 221, this suppresses the slight swing of the piston rod 221 during the operation of the pressure cylinder 22, reducing sensor noise caused by mechanical vibration during dynamic testing and ensuring the real-time and authenticity of the pressure-displacement curve.

[0034] In some embodiments, the pressure sensing portion 23 is columnar and is coaxially disposed with the piston rod 221 of the pressure cylinder 22 . The radial dimension of the pressure sensing portion 23 is greater than that of the piston rod 221 .

[0035] In this invention, the pressure sensing portion 23 employs a cylindrical structure and is coaxially arranged with the piston rod 221 of the pressure cylinder 22, ensuring that the transmission path of downward pressure from the pressure cylinder 22 to the uniaxial portion 21 always lies along a single vertical axis. This design completely eliminates lateral force components or bending moment interference caused by assembly errors or structural offsets, allowing the pressure sensor to measure only pure axial loads, thus avoiding data distortion.

[0036] refer to Figure 3-4 In some embodiments, the single-axis portion 21 includes a pressure transmitting platform 211 connected to the pressure sensing portion 23 , and an arc-shaped bonding axis portion 212 protruding from the surface of the pressure transmitting platform 211 away from the pressure sensing portion 23 .

[0037] In this invention, the continuously curved surface of the arc-shaped bonding shaft 212 forms surface contact with the surface of the glass cover 10, significantly increasing the effective contact area and reducing peak stress in the contact area. This design prevents atypical fractures of the glass cover 10 caused by localized stress concentration. Furthermore, the arc-shaped bonding shaft 212 utilizes a flexible bonding method to the surface of the glass cover 10, leveraging adhesive force to offset potential lateral slippage during downward pressure, ensuring test accuracy.

[0038] refer to Figure 7-8In some embodiments, the supporting platform 3 includes a pad 31 mounted on the supporting area, a test box 32 disposed on top of the pad 31, and a support structure 33. The top of the test box 32 has an opening 321 communicating with the interior thereof. The support structure 33 is disposed at the opening 321 of the test box 32 and is used to support the glass cover plate 10 to be tested.

[0039] In the present invention, the support structure 33 is disposed at the opening 321 of the test box 32 , which can provide a deformation space for the test of the glass cover 10 and ensure the effective conduct of the test.

[0040] In some embodiments, the support structure 33 includes two uniaxial members relatively spaced apart from each other in the opening 321 of the test box 32 , wherein the uniaxial portion 21 is projected in a direction perpendicular to the top surface of the pad 31 and is located between the projections of the two uniaxial members of the support structure 33 .

[0041] In this invention, two uniaxial members are spaced apart at the opening 321 of the test box 32, forming the geometric boundary conditions for a standard three-point bending test (i.e., two support points + a central force application point). By constraining the projection of the uniaxial portion 21 to lie between the projections of the two uniaxial members, the glass cover 10 is ensured to bend in only one direction when loaded, eliminating interference from torsional or shear components caused by an offset force application point and ensuring data validity.

[0042] Continue to refer Figure 7-8 In some embodiments, the single-axis member includes a pressure platform 331 disposed at the opening 321 of the test box 32 , and an arc-shaped bonding protrusion 332 protruding from the surface of the pressure platform 331 away from the test box 32 .

[0043] In the present invention, the continuous curved surface design of the arc-shaped bonding protrusion 332 forms surface contact with the edge of the glass cover 10, significantly increasing the effective contact area, reducing the local stress peak at the glass edge, and avoiding non-test edge cracking of the glass due to stress concentration at the support point.

[0044] The curved adhesive protrusion 332 has adhesive properties, forming a flexible, constrained interface with the surface of the glass cover plate 10 through adhesion. When the glass cover plate 10 undergoes slight displacement or deformation during bending, the elastic deformation of the curved surface adaptively compensates for the displacement deviation, maintaining a uniform distribution of support force. This avoids the sliding error caused by changes in the friction coefficient of traditional rigid supports and ensures the mechanical conditions of pure bending loads.

[0045] refer to Figure 1-2 6. In some embodiments, the recording device 4 includes an L-shaped bracket 41 disposed on the bottom support structure 11 , and a camera module 42 fixed to the L-shaped bracket 41 .

[0046] In the present invention, the L-shaped bracket 41 is connected to the bottom support structure 11 through its right-angle rigid structure, forming a low-center-of-gravity triangular support system, which significantly reduces the vibration amplitude of the camera module 42 during equipment operation and ensures the envisioned quality.

[0047] In some embodiments, the camera module 42 is a high-precision camera.

[0048] Specifically, refer to Figure 5 The bottom support structure 11 of the support frame 1 supports the downward pressing device 2, the carrying platform 3, and the recording device 4. The support 121 of the top support structure 12 includes two brackets 1212 spaced apart on the left and right sides of the carrying platform 3, and a pad 1211 installed between the brackets 1212 and the bottom support structure 11. The two brackets 1212 jointly support the downward pressing mounting plate 122. Furthermore, the bottom support structure 11 is plate-shaped.

[0049] The pressing mounting plate 122 is used to install and fix the pressing device 2. A mounting through hole 123 is provided on the pressing mounting plate 122. The pressing device 2 has a pressing cylinder 22. The piston rod 221 of the pressing cylinder 22 is passed through the mounting through hole 123. The pressing cylinder 22 is configured to drive the pressure sensing part 23 and the single-axis part 21 to extend and retract through the piston rod 221.

[0050] The pad 31 of the carrying platform 3 supports the test box 32 on the support area of the bottom support structure 11. If the test requires changing the type and size of glass, the matching test box 32 and pad 31 can be replaced. Figure 7-8 As shown, the support structure 33 is disposed within the opening 321 of the test box 32. Specifically, two single-axis members of the support structure 33 are symmetrically spaced and fixed to the opening 321 of the test box 32. Each single-axis member includes a pressure platform 331 disposed within the opening 321 of the test box 32 and an arc-shaped bonding protrusion 332 disposed on the top surface of the pressure platform 331. Specifically, the cross-section of the arc-shaped bonding protrusion 332 is semicircular.

[0051] The semicircular arc-shaped bonding protrusion 332 of the single-axis member is the arc surface that contacts the glass to be tested. Silicone is pasted on the surface of the arc-shaped bonding protrusion 332 to ensure that the glass will not be displaced due to friction during the test.

[0052] The pressure cylinder 22 is specifically an electric cylinder, which is used to complete the upward and downward extension. The head of the piston rod 221 of the pressure cylinder 22 is fixed with a pressure sensing part 23, which is used to detect the current downward pressure value and transmit the data to the host computer in real time for data processing. The single-axis part 21 has the same structure as the single-axis part, and includes a connected pressure transmission platform 211 and an arc-shaped bonding shaft part 212. Specifically, the cross-section of the arc-shaped bonding shaft part 212 is semicircular, and the arc-shaped pressure surface of the arc-shaped bonding shaft part 212 is adhered with a silicone layer to increase the friction during the downward pressure process.

[0053] Recording device 4 Figure 1-2 6 . There are two recording devices 4, spaced apart and positioned on either side of the supporting platform 3. The recording devices 4 include an L-shaped bracket 41 and a camera module 42 connected to each other. The L-shaped bracket 41 includes a bottom support plate 411 positioned on the bottom support structure 11, and a vertical support plate 412 extending from the edge of the bottom support plate 411. A mounting hole 413 for mounting the camera module 42 is provided in the middle of the vertical support plate 412. The two recording devices 4, positioned opposite each other, are used to simultaneously record the downward pressure process and the shattering of the glass under pressure.

[0054] In summary, the present invention provides a uniaxial bending strength testing device for glass cover plates for displays, which can complete the uniaxial bending strength testing of glass cover plate products. The testing process is recorded in full by a high-precision camera, and the pressure sensor records the pressure during the pressing process and transmits the data to the host computer for analysis and data storage.

[0055] It is understood that the above embodiments are merely exemplary embodiments for illustrating the principles of the present disclosure, and the present disclosure is not limited thereto. Those skilled in the art may make various modifications and improvements without departing from the spirit and substance of the present disclosure, and such modifications and improvements are also considered to be within the scope of protection of the present disclosure.

Claims

1. A uniaxial bending strength testing device for a display glass cover, characterized in that: The detection equipment includes a support frame, a pressing device, a bearing platform and a recording device; The support frame includes a bottom support structure and a top support structure connected to the bottom support structure, the bottom support structure has a support area, and the top support structure is provided with a downward pressure installation area corresponding to the support area; the carrying platform is installed in the support area and is used to carry the glass cover plate to be tested; The pressing device is arranged relative to the carrying platform and installed in the pressing installation area. The pressing device has a single-axis part for pressing down the glass cover plate to be tested. The recording device is arranged on the support frame and is used to record the bending process of the glass cover plate to be tested.

2. The uniaxial bending strength testing device for display glass cover plates according to claim 1, characterized in that: The top supporting structure includes a support connected to the bottom supporting structure, and a downward pressing mounting plate connected to the support and spaced apart from the bottom supporting structure, wherein the downward pressing mounting plate is provided with the downward pressing mounting area corresponding to the support area position.

3. The uniaxial bending strength testing device for display glass cover plates according to claim 2, characterized in that: A mounting through hole is provided in the pressing installation area of the pressing installation plate, and the pressing device is passed through the mounting through hole.

4. The uniaxial bending strength testing device for display glass cover plates according to claim 3, characterized in that: The pressing device includes a pressure cylinder provided on the top surface of the pressing mounting plate, a pressure sensing portion and the single-axis portion, and a piston rod of the pressure cylinder passes through the mounting through hole; Wherein, along the axial direction of the piston rod of the pressure cylinder, the pressure sensing portion is connected to the piston rod, and the single-axis portion is connected to the pressure sensing portion.

5. The uniaxial bending strength testing device for display glass cover plates according to claim 4, characterized in that: The pressure sensing portion is columnar and is coaxially arranged with the piston rod of the pressure cylinder. The radial dimension of the pressure sensing portion is greater than the radial dimension of the piston rod.

6. The uniaxial bending strength testing device for display glass cover plates according to claim 4, characterized in that: The single shaft portion includes a pressure transmitting platform connected to the pressure sensing portion, and an arc-shaped bonding shaft portion protruding from a surface of the pressure transmitting platform away from the pressure sensing portion.

7. The uniaxial bending strength testing device for display glass cover plates according to claim 6, characterized in that: The carrying platform includes a pad installed in the supporting area, a test box arranged on the top of the pad, and a supporting structure; the top of the test box has an opening connected to its interior, and the supporting structure is arranged at the opening of the test box and is used to support the glass cover to be tested.

8. The uniaxial bending strength testing device for display glass cover plates according to claim 7, wherein: The support structure includes two single-axis parts that are relatively spaced apart and arranged at the opening of the test box, wherein the single-axis portion is projected along a direction perpendicular to the top surface of the cushion block and is located between the projections of the two single-axis parts of the support structure.

9. The uniaxial bending strength testing device for display glass cover plates according to claim 8, characterized in that: The single-axis component includes a pressure-bearing platform arranged at the opening of the test box, and an arc-shaped bonding protrusion protruding from the surface of the pressure-bearing platform away from the test box.

10. The uniaxial bending strength testing device for a display glass cover according to claim 1, wherein: The recording device includes an L-shaped bracket arranged on the bottom support structure, and a camera module fixed to the L-shaped bracket.

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