Flexible glass bending experiment device

Abstract

The utility model discloses a flexible glass bending experiment device which comprises a tensile machine (1), a cross beam (101) is arranged on the inner side of the tensile machine (1), a connecting piece (2) is arranged on the cross beam (101), a base (102) is arranged at the bottom of the tensile machine (1), and a pressing and bending device (3) for pressing flexible glass is arranged between the connecting piece (2) and the base (102). A clamping mode is changed, a bending test tool structure is optimized, correction of the flatness of a platform is increased in the process, interference items of other unstable force when glass is stressed are reduced, and a pressing and bending device (3) and a tensile machine (1) are connected together through a connecting piece (2). According to the utility model, more accurate relation data between the form change and the stress when the glass is bent can be obtained in the test process, and the flatness can be measured and corrected midway by increasing hard contact such as threaded connection, so that the problem of inaccurate parameters in the test caused by insufficient flatness and parallelism of the tool is effectively reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of flexible glass, and specifically relates to a flexible glass bending experimental device. Background Art

[0002] With the development and upgrading of electronic products such as smart phones, consumers' demand for product experience is also constantly upgrading. Traditional candy-bar mobile phones have reached a bottleneck in meeting users' demand for large screens and cannot meet users' demand for smaller size and larger display area. The emergence of flexible folding screens can meet users' demand for large screens to a greater extent while ensuring portability. Therefore, it has become an emerging technology pursued by mobile phone manufacturers.

[0003] The patent number is 202322242512.6, and a public specification published on March 15, 2024 discloses a flexible glass bending performance testing device, which relates to the field of flexible glass technology. The flexible glass bending performance testing device includes a feeding mechanism, a folding mechanism, and a collecting mechanism; the folding mechanism is located between the feeding mechanism and the collecting mechanism, the feeding mechanism is used to transport the glass to be tested to the folding mechanism, the folding mechanism is used to perform bending performance testing on the glass to be tested, and the collecting mechanism is used to collect the glass to be tested after the bending performance testing by the folding mechanism. The flexible glass bending performance testing device can achieve a high degree of automation of the bending performance testing device and can be applied to industrial mass production.

[0004] When flexible glass is subjected to a bending test, it is necessary to bend the glass smoothly and evenly under stress. Therefore, in addition to high requirements on the roughness and flatness of the glass contact surface, high requirements are also placed on the parallelism and uniformity of the upper and lower surfaces in contact with the glass. During the use of existing tooling, there are multiple factors that lead to insufficient parallelism between the tooling and the equipment, such as direct contact between the bottom of the tooling and the tensile machine equipment platform, machining accuracy of tooling plates one and two, contact between the screw bearing seat and plate one, parallelism between the screw and the screw bearing seat, etc. The direct contact between the tooling and the tensile machine equipment platform is an unstable soft contact. During the test, the stress on the entire tooling may cause sliding between the tooling and the equipment, thus affecting the stress analysis.

[0005] When a tensile testing machine is used to perform a bending test on flexible glass, in addition to the need to bend the glass stably as described above, data analysis such as the correlation between the glass shape and the pressure change is also required. However, when performing the bending test, the data provided by the pressure head sensor cannot accurately express the actual force on the glass. The main factor is that when the tensile testing machine equipment beam is pressed down, in addition to the force to bend the glass, a part of the force must be used to counteract the friction force and other resistances between the screw and the screw bearing seat. There is also a difference between static friction and sliding friction between the screw and the screw bearing seat. Therefore, it is impossible to obtain effective and accurate force conditions of the flexible glass during the entire bending test. Utility Model Content

[0006] The utility model aims to provide a flexible glass bending experiment device which can improve the bending experiment accuracy.

[0007] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a flexible glass bending test device, including a tensile testing machine, a crossbeam is provided on the inner side of the tensile testing machine, a connecting piece is provided on the crossbeam, a base is provided at the bottom of the tensile testing machine, and a pressing device for pressing the flexible glass is provided between the connecting piece and the base.

[0008] The folding device comprises a bottom plate arranged on the base and a top plate connected to the connecting piece.

[0009] The bottom plate is connected to the base through threads.

[0010] The connecting piece is a connecting shaft with threads at both ends, and the two ends of the connecting piece are respectively threadedly connected to the cross beam and the top plate.

[0011] The bottom plate is located above the top plate, and the bottom plate and the top plate are in a horizontal shape.

[0012] The flexible glass is placed between the top and bottom plates.

[0013] The tensile machine comprises a column arranged on a base, and the crossbeam is arranged between the columns on both sides.

[0014] The crossbeam is slidably arranged on the column.

[0015] The technical effect of the utility model is as follows: in the bending test, the equipment beam is pressed down to bend the glass by transferring force to the plate. The stress condition of the glass can be accurately obtained during the pressing process. This design method can also reduce the contact surface when clamping the top plate and the bottom plate, and increase hard contacts such as threaded connections. The flatness can be measured and corrected in the middle, which effectively reduces the problem of inaccurate parameters in the test caused by insufficient flatness and parallelism of the tooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] This specification includes the following drawings, which show the following contents:

[0017] Figure 1 This utility model is a flexible glass bending experimental device;

[0018] Figure 2 for Figure 1 Schematic diagram of the connecting parts of a flexible glass bending experimental device.

[0019] The markings in the figure are: 1, tensile testing machine; 101, crossbeam; 102, base; 103, column; 2, connecting piece; 3, folding device; 31, bottom plate; 32, top plate. DETAILED DESCRIPTION

[0020] The following is a further detailed description of the specific implementation methods of the utility model by describing the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the utility model concept and technical solution of the utility model and facilitating its implementation.

[0021] See also Figure 1-2 A flexible glass bending test device includes a tensile testing machine 1, a crossbeam 101 is provided on the inner side of the tensile testing machine 1, a connecting member 2 is provided on the crossbeam 101, a base 102 is provided at the bottom of the tensile testing machine 1, and a pressing device 3 for pressing the flexible glass is provided between the connecting member 2 and the base 102.

[0022] By changing the clamping method of the existing tooling, optimizing the structure of the bending test tooling, increasing the correction of the platform flatness during the process and reducing the interference of other unstable forces when the glass is subjected to force, the folding device 3 is connected to the tensile machine 1 using the connecting piece 2, so that more accurate data on the relationship between the shape change of the glass when it is bent and the magnitude of the force applied can be obtained during the test.

[0023] The pressing and bending device 3 includes a bottom plate 31 disposed on the base 102 and a top plate 32 disposed in connection with the connecting member 2 ; the flexible glass is pressed and bent by the bottom plate 31 and the top plate 32 .

[0024] The bottom plate 31 is connected to the base 102 by threads; fixing the base 102 by threaded connection can increase stability during bending, and the flatness can be measured and corrected midway, effectively reducing the problem of inaccurate parameters in the test caused by insufficient flatness and parallelism of the tooling.

[0025] The connector 2 is a connecting shaft with threads at both ends, and the two ends of the connector 2 are respectively threadedly connected to the cross beam 101 and the top plate 32; the hard contact method of threaded connection can reduce the contact surface of the intermediate clamping, and the flatness can be measured and corrected with a micrometer in the middle, effectively reducing the problem of inaccurate parameters in the test caused by insufficient flatness and parallelism of the tooling.

[0026] The bottom plate 31 is located above the top plate 32 , and the bottom plate 31 and the top plate 32 are in a horizontal state, so that the force on the flexible glass is more uniform when it is bent, and the influence of external factors such as gravity is reduced.

[0027] The flexible glass is placed between the top plate 32 and the bottom plate 31 ; by pressing the top plate 32 downward, the top plate 32 and the bottom plate 31 are brought closer to each other to bend the flexible glass.

[0028] The tensile machine 1 includes a column 103 arranged on a base 102, and a beam 101 is arranged between the columns 103 on both sides; force is applied evenly to the beam 101 from both ends to ensure that the beam 101 remains horizontal and the pressure is even.

[0029] The cross beam 101 is slidably disposed on the column 103 ; the cross beam 101 can slide along the column 103 , thereby driving the top plate 32 to rise and fall.

[0030] The technical effect of the utility model is as follows: in the bending test, the equipment beam 101 is pressed down to bend the glass by transferring force to the plate. The stress condition of the glass can be accurately obtained during the pressing process. This design method can also reduce the contact surface when clamping the top plate 32 and the bottom plate 31. By increasing hard contacts such as threaded connections and measuring and correcting the flatness in the middle, the problem of inaccurate parameters in the test caused by insufficient flatness and parallelism of the tooling can be effectively reduced.

[0031] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model; or the above concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A flexible glass bending test device, comprising a tensile testing machine (1), characterized in that: A crossbeam (101) is provided on the inner side of the tensile testing machine (1), a connecting piece (2) is provided on the crossbeam (101), a base (102) is provided at the bottom of the tensile testing machine (1), and a folding device (3) for pressing the flexible glass is provided between the connecting piece (2) and the base (102).

2. A flexible glass bending test device according to claim 1, characterized in that: The folding device (3) comprises a bottom plate (31) arranged on the base (102) and a top plate (32) connected to the connecting member (2).

3. A flexible glass bending test device according to claim 2, characterized in that: The bottom plate (31) is connected to the base (102) via threads.

4. A flexible glass bending test device according to claim 2, characterized in that: The connecting member (2) is a connecting shaft with threads at both ends, and the two ends of the connecting member (2) are respectively threadedly connected to the crossbeam (101) and the top plate (32).

5. The flexible glass bending test device according to claim 2, characterized in that: The bottom plate (31) is located above the top plate (32), and the bottom plate (31) and the top plate (32) are in a horizontal shape.

6. A flexible glass bending test device according to claim 2 or 5, characterized in that: The flexible glass is placed between the top plate (32) and the bottom plate (31).

7. The flexible glass bending test device according to claim 1, characterized in that: The tensile testing machine (1) comprises a column (103) arranged on a base (102), and the crossbeam (101) is arranged between the columns (103) on both sides.

8. The flexible glass bending test device according to claim 7, characterized in that: The crossbeam (101) is slidably arranged on the column (103).

Images