Bending characteristic measuring device for flexible display screen production and manufacturing

Abstract

A flexible display screen manufacturing bending characteristic measuring device disclosed by the present invention comprises a detection frame and an optical detection assembly installed at the rear end of the detection frame, supporting tables are installed on both sides of the top of the detection frame, a deformation abdicating groove is formed in the top of the detection frame, a first negative suction part is sleeved in the supporting table, and a second negative suction part is sleeved in the first negative suction part. And the first negative suction part can perform negative suction limiting on the flexible display screen body placed on the top of the supporting table, and a lead screw lifting assembly is arranged in the middle of the detection frame in a sleeved mode. According to the bending characteristic measuring device for flexible display screen production and manufacturing, a to-be-detected flexible display screen body can be subjected to automatic negative suction limiting through cooperation of two first negative suction components and a vacuum pump, a second negative suction component is linked with a lead screw lifting assembly, and the vacuum pump performs automatic negative suction traction deformation on the flexible display screen body; therefore, the working efficiency of adjusting bending deformation of the flexible display screen body is fully improved.

Description

Technical Field

[0001] The present invention relates to the technical field of display screen detection, and in particular to a bending property measurement device for manufacturing a flexible display screen. Background Art

[0002] Flexible display, also known as flexible display, is a display device made of soft material, which is deformable and bendable. It is as thin as paper. During use, even after the power is cut off, the displayed content will not disappear. Therefore, it is also called "electronic paper".

[0003] Currently, in the production process of flexible displays, to ensure that their bending performance meets usage requirements, the existing technology usually uses corresponding detection devices for targeted testing. For example, the patent document with application number 201711100666.4 discloses "a device for measuring the bending characteristics of a flexible display. The flexible display bending characteristic measurement device includes a frame, a bending mechanism and an optical detection component. The bending mechanism includes a controller, a motor, a fixing frame and a transmission mechanism. The fixing frame includes a fixing portion, a movable portion, a clamping portion and a pressing portion. The transmission mechanism includes a crank, a rocker, a connecting rod, a sliding member and a bending gear. In the flexible display bending characteristic measurement device provided by the present invention, the motor always rotates in one direction, so that the flexible display can be repeatedly bent, effectively reducing the impact on the motor." However, it can be seen from the content disclosed in the above-mentioned prior art that the flexible display is fixed by clamping to limit the position. Although this can meet the detection requirements of the bending deformation of the partial structure of the flexible display and the stability of the overall structure, there are also indentations caused by rigid clamping. Secondly, for batch testing needs, frequent manual clamping will reduce the detection efficiency of the entire device. Summary of the Invention

[0004] (1) Technical problems solved In view of the shortcomings of the prior art, the present invention provides a device for measuring the bending characteristics of flexible display screens, which solves the problems raised in the above-mentioned background technology.

[0005] (2) Technical solution To achieve the above objectives, the present invention provides the following technical solutions: a device for measuring the bending characteristics of a flexible display screen in manufacturing, comprising a detection frame, an optical detection assembly mounted at the rear end of the detection frame, support platforms mounted on both sides of the top of the detection frame, a deformation clearance groove provided within the top of the detection frame, a first negative suction component mounted within the interior of the support platform, and the first negative suction component capable of negatively suctioning and limiting the position of a flexible display screen body placed on top of the support platform; A lead screw lifting assembly is sleeved in the middle of the detection frame, and a bidirectional transmission assembly is provided between the bottom of the lead screw lifting assembly and the inner side of the top of the detection frame. The output structure of the lead screw lifting assembly is transmission-connected to a second negative suction component, which can negatively suction the bottom surface of the middle of the flexible display screen body and drive the flexible display screen body to perform synchronous bending adjustment under the transmission of the lead screw lifting assembly. A vacuum pump is installed in the bottom of the detection frame, and connecting valve pipes are installed between the second negative suction component and the input end of the vacuum pump, and between the first negative suction component and the input end of the vacuum pump.

[0006] Preferably, a plurality of clearance holes are provided inside the support platform, the first negative suction component includes a first shunt pipe, a plurality of first negative pressure suction cups are arranged and installed on the surface of the first shunt pipe, and the plurality of first negative pressure suction cups are sequentially sleeved into the plurality of clearance holes in the corresponding support platform, and the end surface of the top of the first negative pressure suction cup is coplanar with the corresponding support platform; One end of the connecting valve pipe corresponding to the support platform is fixedly sleeved with one end of the first diversion pipe.

[0007] Preferably, the screw lifting assembly includes a first screw, a first brake servo motor, a first nut, a linkage plate, and a base plate; the second negative suction component includes a second shunt pipe, and a plurality of second negative pressure suction cups arranged and installed along the surface of the second shunt pipe; one end of the second shunt pipe is fixedly connected to one end of the corresponding connecting valve pipe; One end of the first screw is transmission-connected to the output end of the first brake servo motor, and the housing surface of the first brake servo motor is covered with an isolation cover installed on the top of the base plate. The first nut is threadedly connected to the surface of the first screw, and the linkage plate is installed between the surface of the first nut and the surface of the second shunt pipe as the output structure of the screw lifting assembly.

[0008] Preferably, a positioning hole is opened in the corner structure of the bottom plate, an auxiliary plate is fixed to the surface of the second shunt pipe, and a guide rod engaged with the positioning hole is installed on the surface of the auxiliary plate.

[0009] Preferably, a support base is installed between the shell surface of the vacuum pump and the bottom structure of the detection frame, and a semi-open protective cover is sheathed on the outer side of the vacuum pump.

[0010] Preferably, the optical detection assembly includes an optical detection module and a support frame, the optical detection module is sleeved inside the top of the support frame and faces the top of the detection frame, and the bottom of the support frame is fixed to the rear end structure of the detection frame.

[0011] Preferably, the bidirectional transmission assembly includes a second lead screw and a third lead screw, the second lead screw and the third lead screw are connected to the same central axis and are respectively engaged with a second nut and a third nut for transmission, the surface of the second nut is fixed to the bottom structure of the base plate, and the lead screw lifting assembly and the second negative suction component can be linearly displaced under the meshing transmission of the second lead screw and the second nut; One end of the second lead screw is transmission-connected to the second brake servo motor, and the other end of the second lead screw is provided with a bearing seat through a bearing sleeve. An auxiliary bracket is fixedly sleeved on the inner side of the top of the detection frame, and the bearing seat and the second brake servo motor are respectively installed on both sides of the auxiliary bracket.

[0012] Preferably, the two support platforms are slidably mounted on both sides of the top of the detection frame, and the bottom of the support platform is clamped with a slide rail fixed on the top surface of the detection frame; The meshing transmission direction of the second lead screw is opposite to the meshing direction of the third lead screw. The second nut and the third nut are both transmission-connected with a linkage plate, and the two linkage plates are respectively transmission-connected with the two support platforms. The linkage plate includes an L-shaped plate body, the bottom of the L-shaped plate body is fixed to the corresponding second nut surface or the surface of the third nut, the top structure of the L-shaped plate body is set to a planar structure and a second electromagnet is nested in the same plane, and the second electromagnet can be magnetically connected to the corresponding bottom surface of the support platform.

[0013] Preferably, an iron curved plate is fixed on the surface of the two support platforms, and a first electromagnet capable of magnetically connecting with the iron curved plate is coplanarly nested in the top structure of the detection frame.

[0014] Preferably, a pressing component is provided on the top of each of the two support platforms, and the pressing component includes an internal threaded sleeve, and threaded holes are provided in the front and rear ends of the internal threaded sleeve, and the threaded holes are internally threadedly connected to an I-shaped screw that can apply top pressure to the flexible display screen body supported on the top of the support platform. A handle is fixed on the top of the I-shaped screw rod, and a disc structure is provided at the bottom structure of the I-shaped screw rod, and the disc structure is made of rubber material.

[0015] (3) Beneficial effects The present invention provides a device for measuring the bending characteristics of flexible display screens, which has the following beneficial effects: 1. The flexible display screen manufacturing bending characteristic measuring device forms a multifunctional bending adjustment mechanism by setting two support platforms, two first negative suction components, a screw lifting assembly, a second negative suction component, a vacuum pump and multiple connecting valve tubes. In the subsequent combined use process of the detection frame and the optical detection component, the flexible display screen body to be detected can be automatically negatively limited by the two first negative suction components in cooperation with the vacuum pump, and the second negative suction component can automatically negatively suck and traction deform the flexible display screen body through the linkage screw lifting assembly and the vacuum pump, thereby fully improving the efficiency of adjusting the bending deformation of the flexible display screen body and solving the problems existing in the prior art.

[0016] 2. The flexible display screen manufacturing bending characteristic measuring device forms an automatic adjustment mechanism through the set bidirectional transmission component, two linkage plates, two iron curved plates and two first electromagnets. When used in combination with the multi-functional bending adjustment mechanism, after the two first negative suction components negatively limit the flexible display screen body, the bidirectional transmission component can drive the support table to move and adjust similarly by transmitting the two linkage plates, and then the flexible display screen body will bend and make way in a convex middle part, thereby meeting the detection requirements of different bending states of the flexible display screen body.

[0017] 3. The flexible display screen manufacturing bending characteristic measuring device can be further expanded by setting up an automatic adjustment mechanism and a multi-functional bending adjustment mechanism. The second negative suction component and related structures can detect the negative suction traction at different positions on the bottom of the flexible display screen body, thereby realizing the quality inspection of the flexible display screen body and optimizing the use effect of the entire device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view schematic diagram of the structure of the present invention; Figure 2 It is a three-dimensional schematic diagram of the structure of the present invention; Figure 3 A schematic top view of the structure of the present invention; Figure 4 It is a right side schematic diagram of the structure of the present invention; Figure 5 It is an enlarged schematic diagram of the lead screw lifting assembly of the present invention; Figure 6 It is an enlarged schematic diagram of the second negative suction component of the structure of the present invention; Figure 7 It is an enlarged schematic diagram of the bidirectional transmission assembly of the structure of the present invention; Figure 8 It is an enlarged schematic diagram of the structural holding component of the present invention.

[0019] In the figure: 1. Detection frame; 2. Optical detection assembly; 3. Support platform; 4. First negative suction component; 41. First shunt pipe; 42. First negative pressure suction cup; 5. Screw lifting assembly; 51. First screw; 52. First brake servo motor; 53. First nut; 54. Linkage plate; 55. Bottom plate; 56. Isolation cover; 6. Second negative suction component; 61. Second shunt pipe; 62. Second negative pressure suction cup; 7. Vacuum pump; 8. Connecting valve pipe; 9. Bidirectional transmission assembly; 91. Second lead screw; 92. Third lead screw; 93. Second nut; 94. Third nut; 95. Second brake servo motor; 10. Linkage plate; 101. L-shaped plate; 102. Second electromagnet; 11. Holding component; 111. Internally threaded sleeve; 112. I-shaped screw; 12. Flexible display body; 13. Iron curved plate; 14. First electromagnet; 15. Auxiliary plate; 16. Guide rod; 17. Slide rail. DETAILED DESCRIPTION

[0020] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0021] The present invention provides a technical solution: please refer to Figures 1-6 A flexible display manufacturing bending characteristic measuring device includes a detection frame 1, an optical detection assembly 2 installed at the rear end of the detection frame 1, the optical detection assembly 2 includes an optical detection module and a support frame, the optical detection module is set in the top of the support frame and faces the top of the detection frame 1, and the bottom of the support frame is fixed to the rear end structure of the detection frame 1, support platforms 3 are installed on both sides of the top of the detection frame 1, and a deformation clearance groove is provided in the top of the detection frame 1, a first negative suction component 4 is set inside the support platform 3, and the first negative suction component 4 can negatively suction and limit the flexible display body 12 placed on the top of the support platform 3; A vacuum pump 7 is installed inside the bottom of the detection frame 1. A support base is installed between the shell surface of the vacuum pump 7 and the bottom structure of the detection frame 1 to ensure the stability of the vacuum pump 7. A semi-open protective cover is installed on the outside of the vacuum pump 7 to avoid contact with irrelevant personnel and meet the heat dissipation requirements of the vacuum pump 7. A connecting valve pipe 8 is installed between the second negative suction component 6 and the input end of the vacuum pump 7, and between the first negative suction component 4 and the input end of the vacuum pump 7. The support platform 3 is provided with a plurality of clearance holes inside, the first negative suction component 4 includes a first shunt pipe 41, and a plurality of first negative pressure suction cups 42 are arranged and installed on the surface of the first shunt pipe 41, and the plurality of first negative pressure suction cups 42 are sequentially sleeved into the corresponding plurality of clearance holes in the support platform 3, and the end surface of the top of the first negative pressure suction cup 42 is coplanar with the corresponding support platform 3 to avoid structural interference. One end of the connecting valve tube 8 corresponding to the support platform 3 is fixedly sleeved with one end of the first shunt pipe 41, thereby meeting the use requirements of the first negative suction component 4 and the vacuum pump 7 in linkage operation, and realizing the operation effect of the overall device for automatically clamping the flexible display screen body 12 during use; A screw lifting assembly 5 is mounted in the middle of the detection frame 1, and a bidirectional transmission assembly 9 is provided between the bottom of the screw lifting assembly 5 and the inner side of the top of the detection frame 1. The output structure of the screw lifting assembly 5 is connected to the second negative suction component 6. The second negative suction component 6 can negatively suction the bottom surface of the middle part of the flexible display screen body 12 and drive the flexible display screen body 12 to perform synchronous bending adjustment under the transmission of the screw lifting assembly 5. The screw lifting assembly 5 includes a first screw 51, a first brake servo motor 52, a first nut 53, a linkage plate 54, and a base plate 55. The second negative suction component 6 includes a second shunt pipe 61, and a plurality of second negative pressure suction cups 62 arranged and installed along the surface of the second shunt pipe 61. One end of the second shunt pipe 61 is fixedly connected to one end of the corresponding connecting valve pipe 8, fully ensuring the connection area of ​​the second negative suction component 6 to transmit the flexible display body 12; One end of the first screw 51 is transmission-connected to the output end of the first brake servo motor 52, and the shell surface of the first brake servo motor 52 is covered with an isolation cover 56 installed on the top of the base plate 55. The first nut 53 is threadedly connected to the surface of the first screw 51, and the linkage plate 54 is installed between the surface of the first nut 53 and the surface of the second diversion pipe 61 as the output structure of the screw lifting assembly 5. The screw lifting assembly 5 can transmit the second negative suction component 6 for fine adjustment, and then realize fine control of different bending angles. Positioning holes are opened in the corner structure of the base plate 55, and an auxiliary plate 15 is fixed on the surface of the second diversion pipe 61. The surface of the auxiliary plate 15 is installed with a guide rod 16 that is engaged with the positioning hole. The second negative suction component 6 that reciprocates and lifts is supported and constrained by the engagement effect between the guide rod 16 and the auxiliary plate 15 assembly and the corresponding positioning hole.

[0022] During use, for the bending test of the flexible display screen body 12, the flexible display screen body 12 is placed on the support platform formed by the two support platforms 3, and the two sides of the flexible display screen body 12 are respectively in contact with the top surfaces of the two support platforms 3. Then, the valves in the connecting valve tubes 8 corresponding to the two support platforms 3 are opened and the vacuum pump 7 is started. The input end of the vacuum pump 7 sucks the internal space of the several first negative pressure suction cups 42 respectively mounted in the two support platforms 3 through the two connecting valve tubes 8 and the two first diversion tubes 41, and then forms a negative pressure at the open port of the first negative pressure suction cup 42, so that the first negative pressure suction cup 42 performs negative suction to limit the bottom of the flexible display screen body 12; Next, the first brake servo motor 52 is turned on and output in the forward direction, and then the output end of the first brake servo motor 52 drives the first lead screw 51, so that the first lead screw 51 engages and drives the first nut 53. Subsequently, the first nut 53 drives the second negative suction component 6 to automatically move upward through the linkage plate 54 until the top ports of the multiple second negative pressure suction cups 62 inside the second negative suction component 6 all contact the middle top surface of the flexible display screen body 12. The first brake servo motor 52 is paused, and the valve in the connecting valve pipe 8 corresponding to the second negative suction component 6 is opened, so that the vacuum pump 7 sucks the internal space of the multiple second negative pressure suction cups 62 through the connecting valve pipe 8 and the second shunt pipe 61 corresponding to the second negative suction component 6, thereby causing the multiple second negative pressure suction cups 62 to synchronously limit the negative suction of the middle bottom surface of the flexible display screen body 12. Next, the first brake servo motor 52 is restarted and reversed, and then the output end of the first brake servo motor 52 drives the first lead screw 51, so that the first lead screw 51 engages with the first nut 53. Subsequently, the first nut 53 drives the second negative suction component 6 to move downward and reset through the linkage plate 54. At the same time, the second negative suction component 6 pulls the flexible display screen body 12 and bends the flexible display screen body 12. The specific bending angle of the flexible display screen body 12 can be assisted by an existing angle tester. Subsequently, the optical detection component 2 is used to perform optical detection on the flexible display screen body 12 in the bent state. After the inspection is completed, the first brake servo motor 52 is turned on and its output is forward, and then the first screw 51 is driven by the output end of the first brake servo motor 52, so that the first screw 51 engages and transmits the first nut 53, and then the first nut 53 will drive the second negative suction component 6 to automatically move upward through the linkage plate 54, and restore the horizontal state of the flexible display screen body 12. After completion, the vacuum pump 7 is turned off to release the continuous negative pressure operation effect on the first negative suction component 4 and the second negative suction component 6, and then the flexible display screen body 12 after inspection is taken out, and the above steps are repeated for the subsequent flexible display screen body 12 to be inspected.

[0023] See also Figure 1-Figure 7The bidirectional transmission assembly 9 includes a second lead screw 91 and a third lead screw 92. The second lead screw 91 and the third lead screw 92 are connected to the same central axis and are respectively engaged with a second nut 93 and a third nut 94. The surface of the second nut 93 is fixed to the bottom structure of the base plate 55, and the lead screw lifting assembly 5 and the second negative suction component 6 can perform linear displacement adjustment under the engagement transmission of the second lead screw 91 and the second nut 93. One end of the second lead screw 91 is transmission-connected to the second brake servo motor 95, and the other end of the second lead screw 91 is equipped with a bearing seat through a bearing sleeve. An auxiliary bracket is fixedly sleeved on the inner side of the top of the detection frame 1, and the bearing seat and the second brake servo motor 95 are respectively installed on both sides of the auxiliary bracket.

[0024] During use, considering the need for linkage detection of the structural connection strength of the flexible display screen body 12, the two-way transmission component 9 can be used to drive the lead screw lifting component 5 and the second negative suction component 6 to perform negative suction tensile testing at multiple different positions on the bottom of the flexible display screen body 12. The specific operation is as follows: According to the above operating steps, after the second negative suction component 6 pulls and deforms the flexible display screen body 12 and resets it, start the second brake servo motor 95, and the second brake servo motor 95 drives the second screw 91 and the third screw 92 to rotate synchronously, and then uses the meshing transmission effect of the second screw 91 on the second nut 93 to make the second nut 93 drive the screw lifting assembly 5 and the second negative suction component 6 to adjust the linear displacement, and replace the negative suction displacement. After the completion, according to the above related steps, the second negative suction component 6 is pulled and deformed and reset to the flexible display screen body 12 again, and this reciprocating process is repeated. After the multi-point detection is completed, the flexible display screen body 12 is powered on to detect whether it can be used normally. See also Figure 1-Figure 7 The two support platforms 3 are slidably installed on both sides of the top of the detection frame 1, and the bottom of the support platform 3 is clamped with a slide rail 17 fixed on the top surface of the detection frame 1. The meshing transmission direction of the second lead screw 91 is opposite to the meshing direction of the third lead screw 92. The second nut 93 and the third nut 94 are both transmission-connected with a linkage plate 10, and the two linkage plates 10 are respectively transmission-connected with the two support platforms 3. The linkage plate 10 includes an L-shaped plate body 101. The bottom of the L-shaped plate body 101 is fixed to the corresponding surface of the second nut 93 or the surface of the third nut 94. The top structure of the L-shaped plate body 101 is set to a planar structure and a second electromagnet 102 is nested in the same plane. The second electromagnet 102 can be magnetically connected to the bottom surface of the corresponding support platform 3.

[0025] During use, considering the bending detection requirements of the flexible display body 12 in different directions, the specific operations are as follows: The flexible display screen body 12 is placed on the support platform formed by the two support platforms 3, and the two sides of the flexible display screen body 12 are respectively in contact with the top surfaces of the two support platforms 3. Then, the valves in the connecting valve tubes 8 corresponding to the two support platforms 3 are opened and the vacuum pump 7 is started. The input end of the vacuum pump 7 sucks the internal space of the plurality of first negative pressure suction cups 42 respectively mounted in the two support platforms 3 through the two connecting valve tubes 8 and the two first diversion tubes 41, and then forms a negative pressure at the open port of the first negative pressure suction cup 42, so that the first negative pressure suction cup 42 performs negative suction to limit the bottom of the flexible display screen body 12; Next, the first electromagnet 14 is turned off, the magnetic limit between the first electromagnet 14 and the iron curved plate 13 is temporarily released, and the second electromagnet 102 inside the two linkage plates 10 is turned on, so that the two second electromagnets 102 are respectively connected to the two support platforms 3 for magnetic limit. After completion, the second brake servo motor 95 is started, and the second brake servo motor 95 drives the second lead screw 91 and the third lead screw 92 to rotate synchronously, and then the meshing transmission effect of the second lead screw 91 on the second nut 93 and the meshing transmission effect of the third lead screw 92 on the third nut 94 are used to make the second nut 93 and the third nut 94 drive their respective corresponding support platforms 3 and make the two support platforms 3 move similarly, and the flexible display screen body 12 that is subjected to synchronous pressure will bend and make way with a bulge in the middle, thereby meeting the detection requirements of different bending states of the flexible display screen body 12.

[0026] See also Figures 1-8 An iron curved plate 13 is fixed to the surface of the two support platforms 3, and a first electromagnet 14 that can be magnetically connected to the iron curved plate 13 is coplanarly nested in the top structure of the detection frame 1. A holding component 11 is provided on the top of the two support platforms 3, and the holding component 11 includes an internal threaded sleeve 111. Threaded holes are provided in the front and rear ends of the internal threaded sleeve 111, and an I-shaped screw 112 that can apply top pressure limit to the flexible display screen body 12 supported on the top of the support platform 3 is threadedly connected to the threaded hole. A handle is fixed on the top of the I-shaped screw 112, and a disc structure is provided at the bottom structure of the I-shaped screw 112, and the disc structure is made of rubber material.

[0027] During use, for the flexible display screen body 12 that is not suitable for negative suction limiting, the flexible display screen body 12 can still be mechanically limited by the two pressing components 11. The specific operation is as follows: Place the flexible display screen body 12 on top of the two support platforms 3, then turn the I-shaped screw 112 so that the I-shaped screw 112 can press and limit the side structure of the flexible display screen body 12 under the spiral support of the corresponding internal threaded sleeve 111, and the remaining pressing component 11 is also operated according to the above steps, thereby ensuring the adjustment requirements of the bending deformation of the flexible display screen body 12.

[0028] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A device for measuring the bending characteristics of a flexible display screen, comprising a detection frame (1), an optical detection component (2) mounted at the rear end of the detection frame (1), and characterized in that: Support platforms (3) are installed on both sides of the top of the detection frame (1), and a deformation-allowing groove is provided in the top of the detection frame (1). A first negative suction component (4) is installed inside the support platform (3), and the first negative suction component (4) can negatively suction and limit the flexible display screen body (12) placed on the top of the support platform (3); A screw lifting assembly (5) is mounted inside the middle of the detection frame (1), and a bidirectional transmission assembly (9) is provided between the bottom of the screw lifting assembly (5) and the inner side of the top of the detection frame (1), and the output structure of the screw lifting assembly (5) is transmission-connected to a second negative suction component (6), and the second negative suction component (6) is capable of negatively sucking the bottom surface of the middle of the flexible display screen body (12) and driving the flexible display screen body (12) to perform synchronous bending adjustment under the transmission of the screw lifting assembly (5); A vacuum pump (7) is mounted inside the bottom of the detection frame (1), and connecting valve pipes (8) are installed between the second negative suction component (6) and the input end of the vacuum pump (7), and between the first negative suction component (4) and the input end of the vacuum pump (7).

2. The device for measuring bending characteristics of a flexible display screen according to claim 1, wherein: The support platform (3) is provided with a plurality of clearance holes inside, the first negative suction component (4) includes a first shunt pipe (41), a plurality of first negative pressure suction cups (42) are arranged and installed on the surface of the first shunt pipe (41), and the plurality of first negative pressure suction cups (42) are sequentially inserted into the plurality of clearance holes in the corresponding support platform (3), and the end surface of the top of the first negative pressure suction cup (42) is coplanar with the corresponding support platform (3); One end of the connecting valve pipe (8) corresponding to the support platform (3) is fixedly sleeved with one end of the first diversion pipe (41).

3. The device for measuring bending characteristics of a flexible display screen according to claim 1, wherein: The screw lifting assembly (5) includes a first screw (51), a first brake servo motor (52), a first nut (53), a linkage plate (54), and a base plate (55); the second negative suction component (6) includes a second shunt pipe (61), and a plurality of second negative pressure suction cups (62) arranged and installed along the surface of the second shunt pipe (61); one end of the second shunt pipe (61) is fixedly connected to one end of a corresponding connecting valve pipe (8); One end of the first lead screw (51) is transmission-connected to the output end of the first brake servo motor (52), and the housing surface of the first brake servo motor (52) is covered with an isolation cover (56) mounted on the top of the base plate (55), the first nut (53) is threadedly connected to the surface of the first lead screw (51), and the linkage plate (54) is installed between the surface of the first nut (53) and the surface of the second shunt pipe (61) as the output structure of the lead screw lifting assembly (5).

4. The device for measuring bending characteristics of a flexible display screen according to claim 3, wherein: Positioning holes are provided in the corner structure of the bottom plate (55), an auxiliary plate (15) is fixed to the surface of the second shunt pipe (61), and a guide rod (16) is mounted on the surface of the auxiliary plate (15) and is engaged with the positioning holes.

5. The device for measuring bending characteristics of a flexible display screen according to claim 1, wherein: A support base is installed between the shell surface of the vacuum pump (7) and the bottom structure of the detection frame (1), and a semi-open protective cover is sheathed on the outside of the vacuum pump (7).

6. The device for measuring bending characteristics of a flexible display screen according to claim 1, wherein: The optical detection assembly (2) comprises an optical detection module and a support frame, wherein the optical detection module is sleeved inside the top of the support frame and faces the top of the detection frame (1), and the bottom of the support frame is fixed to the rear end structure of the detection frame (1).

7. The device for measuring bending characteristics of a flexible display screen according to claim 3, wherein: The bidirectional transmission assembly (9) includes a second lead screw (91) and a third lead screw (92), the second lead screw (91) and the third lead screw (92) are connected to the same central axis and are respectively engaged with a second nut (93) and a third nut (94), the surface of the second nut (93) is fixed to the bottom structure of the base plate (55), and the lead screw lifting assembly (5) and the second negative suction component (6) can be linearly displaced under the engagement transmission of the second lead screw (91) and the second nut (93); One end of the second lead screw (91) is transmission-connected to the second brake servo motor (95), and the other end of the second lead screw (91) is provided with a bearing seat through a bearing sleeve, and an auxiliary bracket is fixedly sleeved on the inner side of the top of the detection frame (1), and the bearing seat and the second brake servo motor (95) are respectively mounted on both sides of the auxiliary bracket.

8. The device for measuring bending characteristics of a flexible display screen according to claim 7, characterized in that: The two support platforms (3) are respectively slidably mounted on both sides of the top of the detection frame (1), and the bottom of the support platform (3) is clamped with a slide rail (17) fixed on the top surface of the detection frame (1); The meshing transmission direction of the second lead screw (91) is opposite to the meshing direction of the third lead screw (92); the second nut (93) and the third nut (94) are both transmission-connected to a linkage plate (10), and the two linkage plates (10) are respectively transmission-connected to the two support platforms (3); The linkage plate (10) includes an L-shaped plate body (101), the bottom of the L-shaped plate body (101) is fixed to the surface of the corresponding second nut (93) or the surface of the third nut (94), the top structure of the L-shaped plate body (101) is set as a planar structure and a second electromagnet (102) is coplanarly nested therein, and the second electromagnet (102) can be magnetically connected to the bottom surface of the corresponding support platform (3).

9. The device for measuring bending characteristics of a flexible display screen according to claim 1, wherein: An iron curved plate (13) is fixed to the surfaces of the two support platforms (3), and a first electromagnet (14) capable of magnetically connecting with the iron curved plate (13) is coplanarly nested in the top structure of the detection frame (1).

10. The device for measuring bending characteristics of a flexible display screen according to claim 1, wherein: The tops of the two support platforms (3) are both provided with a holding component (11), the holding component (11) comprising an internal threaded sleeve (111), the front and rear ends of the internal threaded sleeve (111) are both provided with threaded holes, and the threaded holes are internally threadedly connected to an I-shaped screw (112) capable of applying a top pressure limit to the flexible display screen body (12) supported on the top of the support platform (3); A handle is fixed to the top of the I-shaped screw rod (112), and a disc structure is provided at the bottom structure of the I-shaped screw rod (112), and the disc structure is made of rubber material.

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