An accurate bending and stress testing tool for OLED flexible screen production

Abstract

This utility model relates to the field of flexible screens and discloses a precision bending and stress testing fixture for OLED flexible screen production. It includes a base, with a bending mechanism on the top of the base. The bending mechanism includes a groove on the top of the base. A mounting seat is fixedly connected to the top of the inner wall of the base, and a double-headed cylinder is fixedly connected to the top of the inner wall of the mounting seat. A connecting seat is fixedly connected to the output end of the double-headed cylinder. In this utility model, the bending angle can be precisely adjusted through the cooperation of an adjusting frame, an arc-shaped groove, adjusting bolts, and a sliding sleeve, combined with a scale strip on the back. The adjustment process does not require disassembly of components, making it convenient and highly accurate. Simultaneously, the double-headed cylinder drives a swing rod that links with the bending plate. Combined with four symmetrically arranged swing rods, this ensures a smooth bending process, prevents screen displacement, accurately simulates actual usage scenarios, and provides reliable data support for flexible screen bending performance testing.

Description

Technical Field

[0001] This utility model relates to the field of flexible screens, and in particular to a precision bending and stress testing fixture for the production of OLED flexible screens. Background Technology

[0002] In the production of flexible OLED screens, bending durability and stress stability directly determine product lifespan. Precise bending and stress testing are crucial for ensuring mass production quality. Bending fixtures can simulate real-world usage scenarios, quantify the bending fatigue performance and stress distribution data of the screen, and provide a scientific basis for material selection and structural optimization. This is of great significance for improving product reliability and reducing market failure risks.

[0003] Existing bending fixtures typically first fix the flexible screen to the placement area of ​​the fixture base using clamps, ensuring that the part of the screen to be tested is aligned with the bending mechanism. Then, the fixture is started, and the bending arm is driven by a cylinder or motor to cyclically bend the screen along a fixed trajectory. During the process, a mechanical counter records the number of bends. Some fixtures are equipped with simple stress indicator components to complete the basic test of the screen's bending resistance.

[0004] However, existing bending fixtures have the problem of inconvenient bending angle adjustment. The movement trajectory of their bending arms is mostly fixed and lacks a flexible adjustment structure, making it difficult to meet the testing needs of multiple specifications and parameters in flexible screen production, thus affecting testing efficiency and applicability. To address this issue, a precision bending and stress testing fixture for OLED flexible screen production is proposed. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a precision bending and stress testing fixture for OLED flexible screen production, which aims to solve the problem of inconvenient adjustment of bending angle in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a precision bending and stress testing fixture for OLED flexible screen production, comprising a base, a bending mechanism provided on the top of the base, the bending mechanism including a groove, the groove being formed on the top of the base, a mounting seat fixedly connected to the top of the inner wall of the base, a double-headed cylinder fixedly connected to the top of the inner wall of the mounting seat, a connecting seat fixedly connected to the output end of the double-headed cylinder, a movable seat fixedly connected to the inner side of the connecting seat, and a movable rod fixedly connected to the side of the movable seat;

[0007] The top of the base is fixedly connected to a placement seat, and the side of the placement seat is rotatably connected to a rotating shaft. A bent plate is fixedly sleeved on the outer wall of the rotating shaft, and a swing rod is fixedly sleeved on the outer wall of the rotating shaft. The swing rod moves through the top of the groove, and a movable groove is opened on the swing rod. The inner wall of the movable groove is movably connected to the outer wall of the moving rod.

[0008] As a further description of the above technical solution: the number of the bending plates is two, and the two bending plates are symmetrically arranged on both sides of the placement seat.

[0009] As a further description of the above technical solution: the number of swing rods is four, and the four swing rods are symmetrically arranged on the front and rear sides of the two bending plates.

[0010] As a further description of the above technical solution: the bottom of the bending plate is fixedly connected to a support plate, and the bottom of the support plate is in contact with the top of the base.

[0011] As a further description of the above technical solution: a sliding groove is provided at the end of the bending plate away from the placement seat; a telescopic rod is fixedly connected to the outer side of the support plate; a clamping plate is fixedly connected to the movable end of the telescopic rod; and the top of the clamping plate slides through the bottom of the sliding groove. A spring is sleeved on the outer wall of the telescopic rod, and the two ends of the spring are fixedly connected to the support plate and the clamping plate, respectively.

[0012] As a further description of the above technical solution: an adjustment frame is fixedly connected to the top of the base, and a scale strip is provided on the back of the adjustment frame. An arc-shaped groove is opened on the front of the adjustment frame, and a sliding sleeve is provided on the front of the adjustment frame. An adjustment bolt is provided on the back of the adjustment frame, and the adjustment bolt passes through the arc-shaped groove and is threadedly connected to the sliding sleeve. A sliding rod is fixedly connected to the back of the bending plate located on the right side, and the sliding rod is slidably connected to the inner wall of the arc-shaped groove.

[0013] As a further description of the above technical solution: the back of the sliding sleeve is fixedly connected to a limiting post, and the limiting post is slidably connected to the top and bottom of the adjusting frame.

[0014] As a further description of the above technical solution: a rubber ring is fixedly connected to the back of the sliding sleeve, and the back of the rubber ring is in contact with the front of the adjusting frame.

[0015] As a further description of the above technical solution: a fixing mechanism is provided on the top of the base, the fixing mechanism includes a fixing column, the fixing column is fixedly connected to the top of the base, a rotating rod is rotatably connected to the top of the fixing column, an elastic clamp is fixedly connected to one end of the rotating rod, an adjustment groove is opened at the other end of the rotating rod, a one-way cylinder is fixedly connected to the top of the base, a lifting frame is fixedly connected to the top of the output end of the one-way cylinder, and the lifting frame is slidably connected to the inner wall of the adjustment groove.

[0016] As a further description of the above technical solution: there are two fixing mechanisms, which are symmetrically arranged on the front and rear sides of the placement seat.

[0017] This utility model has the following beneficial effects:

[0018] 1. In this utility model, the bending angle can be precisely adjusted by cooperating with the adjusting frame, arc groove, adjusting bolt, and sliding sleeve, along with the scale strip on the back. The adjustment process does not require disassembly of components, making it convenient and highly accurate. Simultaneously, the double-headed cylinder drives the swing rod and the bending plate in linkage, combined with four symmetrically arranged swing rods, ensuring a smooth bending process and preventing screen displacement. This accurately simulates actual usage scenarios and provides reliable data support for flexible screen bending performance testing.

[0019] 2. In this utility model, the clamping plate is driven to slide along the slide groove by the spring and the telescopic rod, so as to achieve elastic clamping on both sides of the flexible screen and avoid damage to the screen body by rigid fixation; the lifting frame is driven by a one-way cylinder to rotate the linkage rod, so that the elastic clamping head is precisely pressed against the middle position of the top of the screen body, forming multi-point fixation, effectively preventing the screen body from shifting when bending, adapting to flexible screens of different specifications, eliminating the need for frequent replacement of parts, significantly improving testing efficiency, reducing production quality control costs, and making it highly practical. Attached Figure Description

[0020] Figure 1 This is a front view of a precision bending and stress testing fixture for OLED flexible screen production proposed in this utility model;

[0021] Figure 2 This is a back view of a precision bending and stress testing fixture for OLED flexible screen production proposed in this utility model.

[0022] Figure 3 This is a bottom schematic diagram of the bending mechanism of a precision bending and stress testing fixture for OLED flexible screen production proposed in this utility model.

[0023] Figure 4 This is a schematic diagram of the sliding sleeve of a precision bending and stress testing fixture for OLED flexible screen production proposed in this utility model.

[0024] Figure 5 This is a schematic diagram of the fixing mechanism of a precision bending and stress testing fixture for OLED flexible screen production proposed in this utility model.

[0025] Legend:

[0026] 1. Base; 2. Bending mechanism; 21. Groove; 22. Mounting seat; 23. Double-headed cylinder; 24. Connecting seat; 25. Moving seat; 26. Moving rod; 27. Placement seat; 28. Rotating shaft; 29. ​​Bending plate; 210. Swing rod; 211. Movable groove; 212. Support plate; 213. Telescopic rod; 214. Spring; 215. Slide groove; 216. Clamping plate; 217. Adjusting frame; 218. Arc groove; 219. Sliding sleeve; 220. Adjusting bolt; 221. Limiting post; 222. Rubber ring; 3. Fixing mechanism; 31. Fixing post; 32. Rotating rod; 33. Elastic clamp; 34. Adjusting groove; 35. One-way cylinder; 36. Lifting frame. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Reference Figure 1 - Figure 3This utility model provides an embodiment of a precision bending and stress testing fixture for OLED flexible screen production, comprising a base 1, a bending mechanism 2 on the top of the base 1 for bending tests on the OLED flexible screen, the bending mechanism 2 including a groove 21 on the top of the base 1 to facilitate the swinging of a swing rod 210, and a mounting base 22 fixedly connected to the top of the inner wall of the base 1 for mounting a double-headed cylinder 23, the double-headed cylinder 23 being fixedly connected to the top of the inner wall of the mounting base 22 for driving two connecting seats 24 to move in opposite directions, the output end of the double-headed cylinder 23... A connecting seat 24 is fixedly connected to drive the movable seat 25 to move. The movable seat 25 is fixedly connected to the inner side of the connecting seat 24 to drive the movable rod 26 to move. The movable rod 26 is fixedly connected to the side of the movable seat 25. The movement of the movable rod 26 drives the swing rod 210 to swing. A placement seat 27 is fixedly connected to the top of the base 1 for placing the OLED flexible screen. A rotating shaft 28 is rotatably connected to the side of the placement seat 27 to facilitate the rotation of the bending plate 29. The outer wall of the rotating shaft 28 is fixedly fitted with the bending plate 29. There are two bending plates 29, which are symmetrically arranged on the placement seat 27. On both sides of the base 27, there are OLED flexible screens placed on the base 27 that are bent. A swing rod 210 is fixedly fitted onto the outer wall of the rotating shaft 28, and the swing rod 210 moves through the top of the groove 21. There are four swing rods 210, symmetrically arranged on the front and rear sides of the two bending plates 29. The swing rods 210 swing to rotate the bending plates 29. A movable groove 211 is provided on the swing rod 210, and the inner wall of the movable groove 211 is movably connected to the outer wall of the moving rod 26. A support plate 212 is fixedly connected to the bottom of the bending plate 29. The bottom of the support plate 212 contacts the top of the base 1 to support the bending plate 29. The end of the bending plate 29 away from the placement seat 27 has a groove 215. A telescopic rod 213 is fixedly connected to the outside of the support plate 212. A clamping plate 216 is fixedly connected to the movable end of the telescopic rod 213. The top of the clamping plate 216 slides through the bottom of the groove 215. A spring 214 is sleeved on the outer wall of the telescopic rod 213. The two ends of the spring 214 are fixedly connected to the support plate 212 and the clamping plate 216 respectively. The spring force of the spring 214 drives the clamping plate 216 to clamp and fix the two sides of the OLED flexible screen.

[0029] Reference Figure 2 - Figure 4An adjustment bracket 217 is fixedly connected to the top of the base 1 to facilitate adjustment of the bending degree of the OLED flexible screen. A scale strip is provided on the back of the adjustment bracket 217 for easy observation of the adjusted bending degree. An arc-shaped groove 218 is provided on the front of the adjustment bracket 217, and a sliding sleeve 219 is provided on the front of the adjustment bracket 217. An adjustment bolt 220 is provided on the back of the adjustment bracket 217, and the adjustment bolt 220 passes through the arc-shaped groove 218 and is threadedly connected to the sliding sleeve 219. The back of the bending plate 29 located on the right side is fixed... A sliding rod is fixedly connected to the sliding sleeve 219, and the sliding rod is slidably connected to the inner wall of the arc groove 218. A limiting post 221 is fixedly connected to the back of the sliding sleeve 219, and the limiting post 221 is slidably connected to the top and bottom of the adjusting frame 217, so that the sliding sleeve 219 slides more stably on the adjusting frame 217. A rubber ring 222 is fixedly connected to the back of the sliding sleeve 219, and the back of the rubber ring 222 contacts the front of the adjusting frame 217, improving the stability of the sliding sleeve 219 and the adjusting bolt 220 fixed on the adjusting frame 217.

[0030] Reference Figure 1 , Figure 5 The top of the base 1 is provided with a fixing mechanism 3. There are two fixing mechanisms 3, which are symmetrically arranged on the front and rear sides of the placement seat 27. The fixing mechanism 3 includes a fixing column 31, which is fixedly connected to the top of the base 1. The top of the fixing column 31 is rotatably connected to a rotating rod 32, which facilitates the rotation of the elastic clamp 33. One end of the rotating rod 32 is fixedly connected to the elastic clamp 33, which is used to fix the top center position of the OLED flexible screen. The other end of the rotating rod 32 is provided with an adjustment groove 34. The top of the base 1 is fixedly connected to a one-way cylinder 35, which facilitates the lifting frame 36 to be raised and lowered. The top of the output end of the one-way cylinder 35 is fixedly connected to the lifting frame 36, and the lifting frame 36 is slidably connected to the inner wall of the adjustment groove 34, which facilitates the rotation of the rotating rod 32.

[0031] Working principle: By rotating the adjusting bolt 220, the adjusting bolt 220 and the sliding sleeve 219 are loosened, and the adjusting bolt 220 is pushed to slide on the arc groove 218. The bending angle of the OLED flexible screen is adjusted according to the value displayed on the scale bar. After sliding to the designated position, the adjusting bolt 220 is rotated to lock the adjusting bolt 220 and the sliding sleeve 219, and the rubber ring 222 is squeezed to fix the sliding sleeve 219 and the adjusting bolt 220. The OLED flexible screen is placed on the placement seat 27. The elastic force of the spring 214 drives the clamping plate 216 to clamp and fix the two sides of the OLED flexible screen, and the one-way cylinder 35 is activated. The lifting frame 36 rises, thereby causing one end of the rotating rod 32 to rise, which in turn causes the elastic clamp 33 at the other end of the rotating rod 32 to fall, fixing the top center position of the OLED flexible screen. After fixing, the double-headed cylinder 23 is activated to drive the two connecting seats 24 to move outward, thereby driving the four swing rods 210 to swing outward through the moving seat 25 and the moving rod 26, which in turn drives the bending plate 29 to rotate through the rotating shaft 28, bending the OLED flexible screen. When the sliding rod behind the right bending plate 29 contacts the adjusting bolt 220, the bending plate 29 stops, thereby achieving precise bending of the OLED flexible screen.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A precise bending and stress testing tool for OLED flexible screen production, comprising a base (1), characterized in that: The base (1) is provided with a bending mechanism (2) at the top. The bending mechanism (2) includes a groove (21) which is opened at the top of the base (1). The top of the inner wall of the base (1) is fixedly connected to a mounting seat (22). The top of the inner wall of the mounting seat (22) is fixedly connected to a double-headed cylinder (23). The output end of the double-headed cylinder (23) is fixedly connected to a connecting seat (24). The inner side of the connecting seat (24) is fixedly connected to a movable seat (25). The side of the movable seat (25) is fixedly connected to a movable rod (26). The top of the base (1) is fixedly connected to a placement seat (27), and the side of the placement seat (27) is rotatably connected to a rotating shaft (28). A bent plate (29) is fixedly sleeved on the outer wall of the rotating shaft (28), and a swing rod (210) is fixedly sleeved on the outer wall of the rotating shaft (28). The swing rod (210) moves through the top of the groove (21), and a movable groove (211) is opened on the swing rod (210). The inner wall of the movable groove (211) is movably connected to the outer wall of the moving rod (26). 2.The precise bending and stress testing tool for OLED flexible screen production according to claim 1, characterized in that: The number of the bending plates (29) is two, and the two bending plates (29) are symmetrically arranged on both sides of the placement seat (27). 3.The precise bending and stress testing tool for OLED flexible screen production according to claim 2, characterized in that: The number of swing rods (210) is four, and the four swing rods (210) are symmetrically arranged on the front and rear sides of the two bending plates (29).

4. The precision bending and stress testing fixture for OLED flexible screen production according to claim 1, characterized in that: The bottom of the bent plate (29) is fixedly connected to a support plate (212), and the bottom of the support plate (212) is in contact with the top of the base (1).

5. The precise bending and stress test tool for OLED flexible screen production according to claim 4, characterized in that: The bent plate (29) has a groove (215) at one end away from the placement seat (27). A telescopic rod (213) is fixedly connected to the outside of the support plate (212). A clamping plate (216) is fixedly connected to the movable end of the telescopic rod (213), and the top of the clamping plate (216) slides through the bottom of the groove (215). A spring (214) is sleeved on the outer wall of the telescopic rod (213), and the two ends of the spring (214) are fixedly connected to the support plate (212) and the clamping plate (216) respectively.

6. The precision bending and stress testing fixture for OLED flexible screen production according to claim 1, characterized in that: An adjustment frame (217) is fixedly connected to the top of the base (1), and a scale strip is provided on the back of the adjustment frame (217). An arc groove (218) is provided on the front of the adjustment frame (217), and a sliding sleeve (219) is provided on the front of the adjustment frame (217). An adjustment bolt (220) is provided on the back of the adjustment frame (217), and the adjustment bolt (220) passes through the arc groove (218) and is threadedly connected to the sliding sleeve (219). A sliding rod is fixedly connected to the back of the bent plate (29) located on the right side, and the sliding rod is slidably connected to the inner wall of the arc groove (218).

7. The precision bending and stress testing fixture for OLED flexible screen production according to claim 6, characterized in that: The back of the sliding sleeve (219) is fixedly connected to a limiting post (221), and the limiting post (221) is slidably connected to the top and bottom of the adjusting frame (217).

8. The precision bending and stress testing fixture for OLED flexible screen production according to claim 6, characterized in that: A rubber ring (222) is fixedly connected to the back of the sliding sleeve (219), and the back of the rubber ring (222) is in contact with the front of the adjusting frame (217).

9. The precision bending and stress testing fixture for OLED flexible screen production according to claim 1, characterized in that: The base (1) is provided with a fixing mechanism (3) at the top. The fixing mechanism (3) includes a fixing column (31), which is fixedly connected to the top of the base (1). A rotating rod (32) is rotatably connected to the top of the fixing column (31). An elastic clamp (33) is fixedly connected to one end of the rotating rod (32). An adjustment groove (34) is opened at the other end of the rotating rod (32). A one-way cylinder (35) is fixedly connected to the top of the base (1). A lifting frame (36) is fixedly connected to the top of the output end of the one-way cylinder (35), and the lifting frame (36) is slidably connected to the inner wall of the adjustment groove (34).

10. The precision bending and stress testing fixture for OLED flexible screen production according to claim 9, characterized in that: The number of fixing mechanisms (3) is two, and the two fixing mechanisms (3) are symmetrically arranged on the front and rear sides of the placement seat (27).

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