Screen folding test mechanism

Abstract

The invention discloses a screen folding testing mechanism which is mainly composed of a suction cup jig, a bending side mechanism, a fixing side mechanism, a turnover motor, a reduction gearbox, a turnover bearing seat assembly, a turnover rotating connector, a negative pressure meter and an electromagnetic valve assembly. The suction cup jig is located between the bending side mechanism and the fixing side mechanism. The turnover motor and the reduction gearbox are connected with the turnover bearing seat assembly; the turnover rotary joint is mounted on the turnover bearing seat assembly; the negative pressure meter and the electromagnetic valve assembly are communicated with the suction cup jig through pipelines and used for testing the folding performance of the flexible screen, and the folding performance comprises the folded / unfolded form and the durability of the screen folded for multiple times. And adjusting and verifying the optimal folding position.

Description

Technical Field

[0001] The present invention relates to the fields of folding screens, flexible screens, folding mobile phones, and in particular to a screen folding testing mechanism. Background Art

[0002] With the continuous development and widespread application of folding screen technology, it faces many problems in the production process. Due to limitations in design and process, it is difficult to effectively discover and detect related problems of the product during the folding process. For example, it is impossible to accurately grasp the morphological characteristics of the screen after folding and flattening, and it is also difficult to test the performance of the screen when opening and closing at different angles. In the existing technology, there is a lack of an effective mechanism that can comprehensively and accurately test the folding performance of flexible screens, which has hindered the quality improvement and performance optimization of folding screen products. Summary of the Invention

[0003] In response to the shortcomings of the existing technology, the present invention aims to provide a screen folding testing mechanism for testing the folding performance of flexible screens, including the shape after folding / unfolding, the durability of the screen after multiple folding; adjusting and verifying the optimal folding position; detecting the folding side status, etc., so as to discover problems with the folding screen, and then improve the design and process, and improve the folding performance of the flexible screen.

[0004] To achieve the above object, the present invention provides the following technical solutions: A screen folding test mechanism primarily consists of a suction cup jig, a bending mechanism, a fixed mechanism, a flip motor and reduction gearbox, a flip bearing assembly, a flip rotary joint, a negative pressure gauge, and a solenoid valve assembly. The suction cup jig is located between the bending and fixed mechanisms; the flip motor and reduction gearbox are connected to the flip bearing assembly; the flip rotary joint is mounted on the flip bearing assembly; and the negative pressure gauge and solenoid valve assembly are connected to the suction cup jig via piping.

[0005] More preferably, the suction cup jig comprises a bending jig plate, a fixed jig plate, an air path connector, an air path base plate, and a vacuum suction cup. The bending jig plate and the fixed jig plate are arranged parallel to each other, with the air path base plates mounted below each jig plate. The air path connector and the air path base plates are interconnected, and the vacuum suction cup is positioned on the upper surfaces of the two jig plates and is in communication with the air path base plates.

[0006] More preferably, the bending side mechanism comprises a porous mounting plate, a movable adjustment plate, an L-shaped rotating block, and a linear bearing. The movable adjustment plate is slidably connected to the porous mounting plate, and the L-shaped rotating block is connected to the movable adjustment plate via a linear bearing and can be height-adjusted under the guidance of the linear bearing.

[0007] Furthermore, the fixed-side mechanism consists of a porous mounting plate, a movable adjustment plate, a slide rail, a Z-axis lifting platform, a linear bearing, and a prism. The porous mounting plate and the movable adjustment plate are connected by a slide rail. The Z-axis lifting platform is installed below the porous mounting plate for height adjustment. The linear bearing is set between the Z-axis lifting platform and the porous mounting plate to provide guidance. The prism is mounted on one side of the porous mounting plate.

[0008] Further preferably, the output shaft of the flip motor and the reduction gearbox is connected to the rotating shaft of the flip bearing seat assembly, the flip rotary joint is sleeved on the rotating shaft of the flip bearing seat assembly, and the flip rotary joint is connected to the pipeline of the negative pressure gauge and the solenoid valve assembly; More preferably, the negative pressure gauge and solenoid valve assembly consists of a negative pressure gauge and a solenoid valve. The solenoid valve is installed on the pipeline connecting the suction cup fixture, and accurately controls the on-off of the air circuit through switching action; the negative pressure gauge monitors the vacuum pressure in the air circuit in real time to ensure a stable and reliable adsorption process.

[0009] Furthermore, the spacing between the bending side jig plate and the fixed side jig plate of the suction cup jig can be flexibly adjusted, which can adapt to screen products of different sizes and specifications, ensuring that all types of products can be firmly and accurately fixed during testing.

[0010] Further preferably, a limiting device is provided between the porous mounting plate and the movable adjustment plate of the bending side mechanism, which can accurately limit the sliding stroke of the porous mounting plate to prevent it from affecting the test accuracy or causing damage to the equipment due to excessive sliding.

[0011] Further preferably, the movable adjustment plate of the fixed side mechanism is provided with a scale mark, which can accurately indicate the forward and backward movement position of the porous mounting plate, so that the operator can intuitively read and accurately control the adjustment amount, ensuring the accuracy and repeatability of the test parameters.

[0012] Further preferably, the flip bearing seat assembly is equipped with a lubrication device, which can continuously lubricate the rotating shaft, effectively reduce friction resistance, ensure smooth flipping action, extend the service life of the equipment and improve test accuracy.

[0013] The present invention has the following beneficial effects: By adjusting the position and height of various components in the bending and fixed mechanisms, the present invention can change the product's folding state, simulating folding conditions in a variety of practical usage scenarios and enabling comprehensive testing of screen folding performance. For example, by precisely adjusting the bending rotation center position, product placement height, and front-to-back position, the screen's performance at various folding angles and curvatures can be tested. By integrating a camera, using a prism to reflect the product's side profile, and detecting screen changes from above, detailed information about the folded screen, including morphological changes and bending curves, can be obtained from multiple angles. Furthermore, through multiple folding tests, the screen's durability can be accurately assessed and potential design and process issues identified. The components of the present invention work seamlessly together, with the suction cup fixture providing a stable hold for the product and providing a foundation for subsequent testing. The bending and fixed mechanisms work together to adjust product position and folding conditions. The flip motor and reducer, flip bearing assembly, and flip rotary joint ensure smooth flipping without disrupting the air path. The negative pressure gauge and solenoid valve assembly ensure stable and controlled suction force. This synergy enables the entire testing organization to efficiently and accurately complete the testing of the folding performance of flexible screens. Compared with existing technologies, it can more comprehensively and deeply discover problems with folding screens, providing strong data support for improving design and processes, thereby effectively improving the folding performance of flexible screens.

[0014] In order to more clearly illustrate the structural features and effects of the present invention, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is the assembly diagram of the screen folding mechanism of the present invention, showing the overall layout and connection relationship of the various components of the entire testing mechanism.

[0016] Figure 2 It is a structural schematic diagram of the suction cup fixture of the present invention.

[0017] Figure 3 It is a structural schematic diagram of the bending side mechanism of the present invention.

[0018] Figure 4 It is a structural schematic diagram of the fixed side mechanism of the present invention. DETAILED DESCRIPTION

[0019] The present invention will be further described below with reference to the accompanying drawings and related knowledge, and described clearly and completely. Obviously, the described applications are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] Reference Figure 1-Figure 4As shown, the screen folding test mechanism of the present invention mainly consists of a suction cup fixture 100, a bending side mechanism 200, a fixed side mechanism 300, a flip motor and reduction gearbox 400, a flip bearing seat assembly 500, a flip rotary joint 600, and a negative pressure gauge and solenoid valve assembly 700. These components work together to achieve multi-angle and multi-faceted testing of flexible screens.

[0021] In this invention, the suction cup jig 100 secures the product. Specifically, the product is placed on the bending jig plate 101 and the fixed jig plate 103. A vacuum is applied via the air circuit connector 105. The air circuit base plates 102 and 104 transmit the vacuum to the vacuum cup 106, effectively adsorbing the product. This adsorption method firmly secures the screen product, ensuring that it does not move during testing and ensuring the accuracy of the test results.

[0022] In this invention, the bending mechanism 200 consists of a porous mounting plate 201, a movable adjustment plate 202, an L-shaped rotating block 204, and a linear bearing 203. By sliding the porous mounting plate 201 back and forth and adjusting the height of the L-shaped rotating block 204 using the linear bearing 203, the bending rotation center position can be changed to meet different testing requirements. For example, when testing folding screens with different curvature requirements, the mechanism can be adjusted to simulate the corresponding folding conditions.

[0023] In this invention, the fixed-side mechanism 300 includes a porous mounting plate 301, a movable adjustment plate 302, a slide rail 303, a Z-axis lifting platform 305, linear bearings 304, and a prism 306. The porous mounting plate 301 can slide back and forth on the movable adjustment plate 302 via the slide rail 303. The Z-axis lifting platform 305 adjusts the height of the porous mounting plate 301 via the linear bearings 304, thereby adjusting the placement height and front-to-back position of the product to meet different testing requirements. The prism 306 is used to reflect the side view of the product. Combined with a camera, it can detect the side view of the product when unfolded or folded, providing data for comprehensive evaluation of the screen folding performance.

[0024] In the present invention, the tilting motor and reduction gearbox 400, the tilting bearing assembly 500, and the tilting rotary joint 600: The tilting motor and reduction gearbox 400 provides power for the entire mechanism's tilting motion. Its output shaft is connected to the rotating shaft of the tilting bearing assembly 500, and the reduction gearbox precisely controls the tilting speed and torque. The tilting bearing assembly 500 supports the rotating shaft and ensures its stable rotation. The tilting rotary joint 600 is mounted on the rotating shaft and connected to the pipeline of the negative pressure gauge and solenoid valve assembly 700, ensuring air flow connectivity without affecting the mechanism's tilting motion.

[0025] In the present invention, the negative pressure gauge and solenoid valve assembly 700: The negative pressure gauge is used to monitor the vacuum pressure in the air circuit, ensuring that the suction cup fixture 100 maintains a stable and appropriate suction force on the product. The solenoid valve is installed in the pipeline connecting the suction cup fixture 100, and can flexibly control the air circuit according to testing requirements. For example, the air circuit can be closed when placing or removing the product, and opened for suction and fixation during testing.

[0026] In the present invention, it should be noted that the folding / unfolding form test is implemented as follows: First, the flexible screen product is placed on the bending side jig plate 101 and the fixed side jig plate 103 of the suction cup jig 100. The air circuit is controlled by a negative pressure gauge and solenoid valve assembly 700, and a vacuum is applied to the air circuit connector 105. The vacuum is transmitted to the vacuum suction cup 106 through the air circuit base plates 102 and 104 to ensure that the screen is firmly attached and prevent displacement during the test that may affect the test results.

[0027] The folding / unfolding action is achieved by activating the flip motor and reduction gearbox 400. The output shaft of the flip bearing assembly 500 rotates, causing the bending side mechanism 200, connected to the bending side fixture plate 101, to flip around the axis. The fixed side fixture plate 103 is kept stable by the fixed side mechanism 300, enabling the screen to fold / unfold within a range of 0-180 degrees. The flip rotary joint 600 maintains air flow during shaft rotation, ensuring that the suction cup fixture 100 maintains its grip on the screen.

[0028] The morphological data collection process is as follows: During the screen folding and unfolding process, the camera mounted above continuously captures the screen surface, recording changes in its morphology, such as the presence of wrinkles, cracks, and other defects. The prism 306 on the fixed side mechanism 300 reflects the screen's side profile to the side-mounted camera, which captures the screen's curvature and analyzes whether the screen's curvature at different folding angles meets design requirements.

[0029] In the present invention, the implementation process of the screen multiple folding durability test is: cyclic test setting, setting the operating parameters of the flip motor and the reducer 400 through the control system, such as the flip angle range of 0-180 degrees, the flip speed can be adjusted according to the test requirements, and the number of flips is usually set to thousands or even tens of thousands of times.

[0030] After starting the test, the mechanism automatically performs cyclic folding / unfolding actions according to the set parameters.

[0031] Defect monitoring: During each folding / unfolding cycle, the upper and side cameras work continuously to monitor the status of the screen surface and sides in real time.

[0032] The captured images are analyzed through image processing algorithms to detect durability-related issues such as crack propagation, coating peeling, and display abnormalities.

[0033] The durability of the screen is assessed by recording the number of folds until defects first appear.

[0034] In the present invention, the optimal folding position adjustment verification implementation process is: according to the design parameters of the screen, the position parameters of the bending side mechanism 200 and the fixed side mechanism 300 are preliminarily set.

[0035] For example, the initial bending rotation center position is determined by adjusting the front-to-back position of the porous mounting plate 201 on the movable adjustment plate 202 and the height of the L-shaped rotating block 204 on the linear bearing 203. The initial placement height and front-to-back position of the screen are determined by adjusting the front-to-back position of the porous mounting plate 301 on the slide rail 303 and the Z-axis lifting platform 305 adjusting the height of the porous mounting plate 301 via the linear bearing 304.

[0036] Multi-parameter testing: Keeping other parameters constant, the bending and rotation center position is gradually varied by adjusting the multi-hole mounting plate 201 and the L-shaped rotating block 204, conducting multiple sets of folding tests. After each set of tests, the screen morphology and durability data collected by the camera are analyzed to evaluate the impact of different bending and rotation center positions on the screen's folding performance.

[0037] The present invention uses data analysis and optimization, comparing data from different test groups, to identify the bending and rotation center position that minimizes screen shape change during folding and maximizes durability. Similarly, the screen's placement height and fore-aft position are adjusted using the multi-hole mounting plate 301 and Z-axis lift platform 305 to find the optimal placement parameter combination. The optimal folding position is determined by comprehensively considering the bending and rotation center position and screen placement parameters.

[0038] In the present invention, the folding side state detection is implemented as follows: a prism reflection system is used, in which a prism 306 is provided on one side of the porous mounting plate 301 of the fixed side mechanism 300, and the angle of the prism 306 is precisely adjusted so that it can reflect the light from the side of the screen to the side camera.

[0039] Image acquisition and analysis: When the screen is folded / unfolded, the side camera continuously captures images of the side of the screen through the prism 306.

[0040] The image processing system analyzes the captured image and extracts the curved curve information on the side of the screen.

[0041] Compare the bending curves at different folding angles with the design standard curves to evaluate whether the side shape of the screen meets the requirements during folding, and whether there are problems such as excessive bending or distortion.

[0042] The present invention achieves multi-angle and multi-faceted testing through the coordinated work of various parts. The mechanical structure is coordinated, and the suction cup fixture 100 firmly fixes the screen through vacuum adsorption, providing a stable foundation for subsequent testing. The bending side mechanism 200 and the fixed side mechanism 300 are designed with adjustable structures, which can flexibly change the folding conditions of the screen, such as the bending rotation center position, placement height, and front and back position. The flip motor and reduction gearbox 400, the flip bearing seat assembly 500, and the flip rotary joint 600 work together to achieve precise flipping of the screen while ensuring the connectivity of the air path.

[0043] The control system coordinates with the test requirements to precisely control the operating parameters of the tilt motor, such as speed, angle, and number of cycles, as well as the airway opening and closing and pressure adjustment of the negative pressure gauge and solenoid valve assembly 700. Simultaneously, the control system receives data collected by the camera, performs real-time analysis and processing, and adjusts test parameters or issues alarms based on the analysis results.

[0044] Data collection and analysis work in tandem. The top camera and side cameras capture image data from the screen surface and sides, respectively. The data analysis system comprehensively analyzes both sets of data to comprehensively assess the screen's folding performance, including morphological changes, durability, and side profile. Based on the analysis results, feedback is provided to adjust test parameters or determine the optimal folding position, forming a closed-loop testing system.

[0045] Further, it should be noted that the adjustment of the bending rotation center position is achieved by the forward and backward sliding of the porous mounting plate 201. The porous mounting plate 201 is connected to the movable adjustment plate 202 via a guide rail pair, forming a sliding structure. The porous mounting plate 201 is manually or electrically pushed to slide back and forth on the movable adjustment plate 202. The movable adjustment plate 202 is provided with a scale mark to accurately read the sliding position of the porous mounting plate 201, ensuring adjustment accuracy. The height of the L-shaped rotating block 204 is adjusted. The L-shaped rotating block 204 is connected to the movable adjustment plate 202 via a linear bearing 203, which provides vertical guidance.

[0046] By rotating the adjusting bolt or using an electric lifting device, the L-shaped rotating block 204 is driven to move up and down on the linear bearing 203 to achieve height adjustment.

[0047] The bending rotation center position is determined by the front-to-back position of the multi-hole mounting plate 201 and the height of the L-shaped rotating block 204. By adjusting these two parameters in combination, the bending rotation center position can be precisely adjusted to the required test position to meet the testing requirements of different screens.

[0048] Adjusting the screen's height and fore-aft position is achieved by sliding the multi-hole mounting plate 301 forward and backward. The multi-hole mounting plate 301 is connected to the movable adjustment plate 302 via a slide rail 303, forming a sliding pair. The multi-hole mounting plate 301 is manually or electrically driven to slide forward and backward on the slide rail 303 to adjust the screen's fore-aft position. The movable adjustment plate 302 is equipped with graduated markings for precise control of the sliding distance of the multi-hole mounting plate 301.

[0049] The Z-axis lift platform 305 is height-adjustable. It utilizes a ball screw or hydraulic lift mechanism to provide stable vertical movement. Linear bearings 304 connect the Z-axis lift platform 305 to the porous mounting plate 301, ensuring straightness and stability during the lift.

[0050] The height adjustment of the porous mounting plate 301 is achieved by driving a ball screw with a motor or controlling a hydraulic system.

[0051] Height and front-to-back position are adjusted in tandem. To meet test requirements, the Z-axis lifting platform 305 is used to adjust the height of the multi-hole mounting plate 301 to determine the placement height of the screen. The multi-hole mounting plate 301 is then slid on the slide rails 303 to adjust the front-to-back position of the screen. These two functions work together to position the screen in the optimal testing position, adapting to the testing needs of screens of different sizes and types.

[0052] In the present invention, the porous mounting plate 201 and the movable adjustment plate 202 are connected by a guide rail pair, enabling forward and backward sliding. As the porous mounting plate 201 slides on the movable adjustment plate 202, the horizontal position of the entire bending side mechanism 200 connected to the screen changes. During the screen folding process, this change in horizontal position directly affects the force point and the starting position of rotation during folding. For example, sliding the porous mounting plate 201 forward causes the front end of the screen to participate in the rotation movement earlier during folding, which is equivalent to shifting the center of rotation horizontally. The porous mounting plate 201 is distributed with multiple mounting holes, which are used to connect and secure other components, such as the L-shaped rotating block 204. The choice of different mounting holes changes the position of the connected components, further affecting the overall moment arm and the position of the rotation center. For example, installing the L-shaped rotating block 204 in a mounting hole closer to the front will change the rotation moment arm at the front end of the screen during folding, indirectly changing the position of the bending rotation center.

[0053] In the present invention, the L-shaped rotating block 204 is connected to the movable adjustment plate 202 via a linear bearing 203, allowing for vertical height adjustment. During the screen folding process, changes in height will change the height of the screen's rotation axis when folded. For example, raising the L-shaped rotating block 204 will cause the screen's rotation axis to move upward when folded, thereby changing the vertical position of the bending rotation center. The L-shaped rotating block 204 is connected to the screen or related components, and its position change will change the point of force application during folding. When the height of the L-shaped rotating block 204 changes, the position of the force acting on the screen will also change when the flip motor and reducer 400 provide power for the folding action. According to the principle of leverage, a change in the point of force application will result in a change in the position of the rotation center. For example, when the L-shaped rotating block 204 is raised, the point of force application moves upward, causing the screen's rotation center to shift upward by a certain distance when folded.

[0054] Furthermore, the adjustment of the bend rotation center position by the porous mounting plate 201 and the L-shaped rotating block 204 is not independent, but rather coordinated. For example, the porous mounting plate 201 is first adjusted horizontally to a suitable position, thereby determining the initial horizontal position of the rotation center. The height of the L-shaped rotating block 204 is then adjusted to further fine-tune the vertical position of the rotation center. The combination of different parameters allows for flexible adjustment of the bend rotation center position within a two-dimensional plane defined by both horizontal and vertical dimensions. This allows for the diverse rotation center position requirements of different screen folding tests to be met, simulating folding conditions in a variety of practical usage scenarios.

[0055] Example 1, a screen folding test mechanism, the screen folding mechanism consists of a suction cup fixture 100, a bending side mechanism 200, a fixed side mechanism 300, a flip motor and reducer 400, a flip bearing seat assembly 500, a flip rotary joint 600, a negative pressure gauge and solenoid valve assembly 700 and other parts.

[0056] The suction cup fixture 100 places the product on the bending side fixture plate 101 and the fixed side fixture plate 103, and passes the vacuum through the air circuit connector 105. The air circuit bottom plates 102 and 104 transmit the vacuum to the vacuum suction cup 106 to effectively adsorb the product.

[0057] The bending mechanism 200 consists of a multi-hole mounting plate 201, a movable adjustment plate 202, and an L-shaped rotating block 204. The multi-hole mounting plate 201 can be slid back and forth, and its height can be adjusted via linear bearings 204. This allows the bending center of rotation to be adjusted to meet different testing requirements.

[0058] The fixed-side mechanism 300 consists of a porous mounting plate 301, a movable adjustment plate 302, a slide rail 303, a Z-axis lift platform 305, and linear bearings 304. The porous mounting plate 301 can be slid forward and backward, and its height can be adjusted via the linear bearings 304. This allows for adjustments to the product's placement height and front-to-back position to meet different testing requirements. The prism 306 reflects the product's profile, allowing the camera to capture images and detect the product's profile when unfolded or folded.

[0059] This invention allows for different folding states by adjusting the product's height and position. Its performance can also be monitored using a camera. Specifically, this can be used to test the flexible screen's folding performance, such as its folded / unfolded form and its durability after multiple folds. Adjustment can be performed to verify the optimal folding position and to monitor the folded side. This allows for testing the various folding properties of flexible screens, identifying folding issues, and improving design and process to enhance their performance.

[0060] The technical principles of the present invention have been described above in conjunction with specific embodiments, which are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions based on the principles of the present invention fall within the scope of protection of the present invention. Those skilled in the art will be able to conceive of other specific embodiments of the present invention without inventive effort, and such methods will fall within the scope of protection of the present invention.

Claims

1. A screen folding test mechanism, characterized in that: The invention comprises a suction cup jig (100), a bending side mechanism (200), a fixed side mechanism (300), a flip motor and a reduction gear box (400), a flip bearing seat assembly (500), a flip rotary joint (600), a negative pressure gauge and a solenoid valve assembly (700); the suction cup jig (100) is arranged between the bending side mechanism (200) and the fixed side mechanism (300), the flip motor and the reduction gear box (400) are connected to the flip bearing seat assembly (500), the flip rotary joint (600) is arranged on the flip bearing seat assembly (500), and the negative pressure gauge and the solenoid valve assembly (700) are connected to the suction cup jig (100) through a pipeline.

2. The screen folding test mechanism according to claim 1, characterized in that: The suction cup jig (100) comprises a bending side jig plate (101), a fixed side jig plate (103), an air circuit connector (105), an air circuit bottom plate (102, 104), and a vacuum suction cup (106); the bending side jig plate (101) and the fixed side jig plate (103) are arranged in parallel, the air circuit bottom plates (102, 104) are arranged below the bending side jig plate (101) and the fixed side jig plate (103), respectively, the air circuit connector (105) is connected to the air circuit bottom plates (102, 104), and the vacuum suction cup (106) is arranged on the upper surfaces of the bending side jig plate (101) and the fixed side jig plate (103) and is in communication with the air circuit bottom plates (102, 104).

3. The screen folding test mechanism according to claim 1, characterized in that: The bending side mechanism (200) comprises a porous mounting plate (201), a movable adjustment plate (202), an L-shaped rotating block (204), and a linear bearing (203); the movable adjustment plate (202) is slidably connected to the porous mounting plate (201), the L-shaped rotating block (204) is connected to the movable adjustment plate (202) via the linear bearing (203), and the L-shaped rotating block (204) can be height-adjusted under the guidance of the linear bearing (203).

4. The screen folding test mechanism according to claim 1, characterized in that: The fixed side mechanism (300) comprises a porous mounting plate (301), a movable adjustment plate (302), a slide rail (303), a Z-axis lifting platform (305), a linear bearing (304), and a prism (306); the porous mounting plate (301) and the movable adjustment plate (302) are slidably connected via the slide rail (303); the Z-axis lifting platform (305) is arranged below the porous mounting plate (301) for adjusting its height; the linear bearing (304) is arranged between the Z-axis lifting platform (305) and the porous mounting plate (301) for guiding; and the prism (306) is arranged on one side of the porous mounting plate (301).

5. The screen folding test mechanism according to claim 1, characterized in that: The output shaft of the flip motor and the reduction gearbox (400) is connected to the rotating shaft of the flip bearing seat assembly (500), the flip rotary joint (600) is sleeved on the rotating shaft of the flip bearing seat assembly (500), and the flip rotary joint (600) is connected to the pipeline of the negative pressure gauge and the solenoid valve assembly (700).

6. The screen folding test mechanism according to claim 1, characterized in that: The negative pressure gauge and solenoid valve assembly (700) comprises a negative pressure gauge and a solenoid valve, wherein the solenoid valve is arranged on a pipeline connected to the suction cup fixture (100) and is used to control the on-off of the gas circuit, and the negative pressure gauge is used to monitor the vacuum pressure in the gas circuit.

7. The screen folding test mechanism according to any one of claims 1 to 6, characterized in that: The spacing between the bending side jig plate (101) and the fixed side jig plate (103) of the suction cup jig (100) is adjustable to accommodate screen products of different sizes.

8. The screen folding test mechanism according to any one of claims 1 to 6, characterized in that: A limiting device is provided between the porous mounting plate (201) and the movable adjustment plate (202) of the bending side mechanism (200), for limiting the sliding stroke of the porous mounting plate (201).

9. The screen folding test mechanism according to any one of claims 1 to 6, characterized in that: The movable adjustment plate (302) of the fixed side mechanism (300) is provided with a scale mark for accurately indicating the forward and backward movement position of the porous mounting plate (301).

10. The screen folding test mechanism according to any one of claims 1 to 6, characterized in that: The flip bearing seat assembly (500) is provided with a lubricating device for lubricating the rotating shaft to ensure smooth flipping action.

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