Portable variable-angle butterfly wing bionic flexible film bender

Abstract

The application discloses a portable variable-angle butterfly wing bionical flexible film bender, and relates to the technical fields of flexible film material processing and machinery, which comprises a mounting plate, a wing vein support and a linkage transmission mechanism. A driving assembly is assembled in the mounting plate, and the linkage transmission mechanism is arranged on the front side of the mounting plate. A double-clamping wavy silica gel clamp is assembled at the top of the wing vein support, and a wing vein opening angle scale is assembled on the front side of the mounting plate. The bender adopts a mechanical transmission principle, drives the wing vein support through a gear-link combination, simulates a bionical butterfly wing, and forms a trajectory of natural opening and closing of the bionical butterfly wing. The design effectively improves the local stress concentration phenomenon of a traditional flexible film bending device in a bending process, realizes smooth and lossless bending of the flexible film material, significantly improves the convenience of reliability test of the flexible film material, and reduces operation time and complexity.

Description

Technical Field

[0001] This invention relates to the fields of optical thin film flexible material processing and mechanical engineering technology, specifically to a portable variable-angle butterfly wing biomimetic flexible thin film bending device. Background Technology

[0002] The portable variable-angle butterfly-wing biomimetic flexible film bender is a solution specifically designed for testing the mechanical properties of flexible optical film materials. It aims to effectively adjust the bending angle of flexible film materials during bending, control the uniform distribution of film stress, and ensure that the reliability of flexible film materials can be tested within a controllable range.

[0003] The portable variable-angle butterfly-wing biomimetic flexible film bending device is a solution specifically designed to simplify the installation and testing of the mechanical properties of thin films during the experimental process. It is particularly suitable for scenarios requiring small-scale film preparation and laboratory testing of the mechanical properties of flexible thin film materials.

[0004] However, existing flexible film bending devices have the following shortcomings: Traditional flexible film bending devices often use rigid clamps, which can easily lead to localized stress concentration, wrinkling, or tearing of the film. Manual bending also relies on human experience to control the bending angle, lacking biomimetic smoothness and failing to achieve the dynamic effect of a butterfly's wings opening and closing naturally. Traditional flexible film bending devices require multiple steps to fix and disassemble, increasing operation time and complexity. Therefore, the portable butterfly-wing biomimetic flexible film bending device can effectively solve the problems of complex operation of traditional equipment. Summary of the Invention

[0005] The purpose of this invention is to solve the problems mentioned in the background art by using a double-clamping wave-shaped silicone clamp in existing equipment to adapt to the thickness of flexible materials and to simulate the opening and closing of butterfly wings through a gear-linkage assembly to achieve a dynamic effect of natural butterfly wing opening and closing.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a mounting plate and a wing vein support disposed on the mounting plate, characterized in that: a linkage transmission mechanism and a wing vein opening angle scale are disposed on the front side of the mounting plate; a driving assembly is disposed inside the mounting plate; the wing vein support includes a pair of wing vein arms, each wing vein arm having a double-clamping corrugated silicone clamp at its end; the driving assembly is connected to the linkage transmission mechanism, which is connected to the wing vein support, for driving the pair of wing vein arms to open and close, thereby bending the flexible film clamped on the double-clamping corrugated silicone clamp.

[0007] Preferably, the wing vein support further includes a pair of wing vein arm joint shafts, and the pair of wing vein arms are respectively connected to the corresponding wing vein arm joint shafts and can open and close around the corresponding wing vein arm joint shafts.

[0008] Preferably, an elastic buffer layer is provided below each of the dual-clamping wavy silicone clamps.

[0009] Preferably, the wing vein angle scale, the wing vein arm joint shaft, and the linkage pointer screw constitute a wing vein angle indicating unit. The linkage pointer screw is located at the center of the wing vein angle scale and is used to indicate the angle between a pair of wing vein arms.

[0010] Preferably, the linkage transmission mechanism includes a connecting rod, a secondary gear, a snap-fit ​​connecting handle, a rotating rod, and a primary gear. The primary gear is fixed to the rotating rod, the secondary gear meshes with the primary gear, the secondary gear is connected to the connecting rod through the snap-fit ​​connecting handle, and the connecting rod is connected to the wing vein support.

[0011] Preferably, the secondary gear is provided with a 90° limiting buckle, a 60° limiting buckle and a 45° limiting buckle.

[0012] Preferably, the drive assembly includes a motor and a drive rod, wherein the motor is connected to the rotating rod via the drive rod.

[0013] Compared with the prior art, the advantages and positive effects of the present invention are as follows: 1. In this invention, by setting up a linkage transmission mechanism, the drive rod drives the rotating rod to rotate through the motor of the drive component, thereby making the first-stage gear and the second-stage gear mesh, causing the connecting rod to rotate. The mechanism adopts the mechanical transmission principle, improves the flexible film bending device, and utilizes the natural opening and closing effect of biomimetic butterfly wings to improve the smoothness of film bending and reduce operation time and complexity.

[0014] 2. In this invention, by setting a double-clamping wavy silicone clamp at the end of the wing vein support, unlike the traditional flexible film bending device, it can adapt to the thickness of the flexible film material and increase the pressure dispersion on the contact surface; it solves the problems of uneven thickness and stress of the flexible film material during the bending process.

[0015] 3. In this invention, by combining the wing vein angle scale, the wing vein arm joint shaft, and the linkage pointer screw to form a wing vein angle indicating unit, the size of the angle between the two wing vein arms can be displayed in real time, thus realizing an intuitive degree of bending angle. Attached Figure Description

[0016] Figure 1 A three-dimensional view of the main structure of a portable variable-angle butterfly-wing biomimetic flexible film bending device is provided for this invention. Figure 2 This invention provides a three-dimensional cross-sectional view of the wing vein support structure of a portable variable-angle butterfly wing biomimetic flexible film bending device. Figure 3 Enlarged view of the driver component module; Figure 4 Enlarged view of the wing vein angle indicator unit module.

[0017] In the diagram: 1. Mounting plate; 2. Wing vein bracket; 21. Wing vein arm joint shaft; 22. Linkage pointer screw; 23. Wing vein arm; 24. Double-clamping wave-shaped silicone clamp; 25. Elastic buffer layer; 26. Linkage screw; 27. Wing vein opening angle scale; 3. Linkage transmission mechanism; 31. Connecting rod; 32. Secondary gear; 33. Snap-on connection handle; 34. Rotating rod; 35. Primary gear; 36. 90° limit snap; 37. 60° limit snap; 38. 45° limit snap; 4. Drive assembly; 41. Motor; 42. Drive rod. Detailed Implementation

[0018] To make the technical means, creative features, objectives, and effects of this invention readily understandable, the invention will be further described below in conjunction with specific embodiments and accompanying drawings. It should be understood that these embodiments are only used to illustrate the structural composition, assembly relationship, and usage process of this invention, and are not intended to limit the scope of protection of this invention. Without changing the mutual cooperation relationship between the mounting plate, fin support, linkage transmission mechanism, drive assembly, double-clamping corrugated silicone clamp, and fin angle scale, the relevant dimensions, material hardness, and processing methods can be adaptively selected according to the thickness of the flexible film to be tested and the test requirements.

[0019] like Figures 1 to 4 As shown, this embodiment provides a portable variable-angle butterfly wing biomimetic flexible film bending device, including a mounting plate 1, a wing vein support 2 disposed on the mounting plate 1, a linkage transmission mechanism 3 disposed on the front side of the mounting plate 1, and a drive assembly 4 disposed inside the mounting plate 1. The mounting plate 1 serves as the load-bearing foundation of the entire device, ensuring the relative position stability of the drive assembly 4, the linkage transmission mechanism 3, and the wing vein support 2 during the bending process. The wing vein support 2 is located in the upper region of the mounting plate 1 and includes a pair of wing vein arms 23 that can open and close relative to each other. The two wing vein arms 23 rotate around the corresponding wing vein arm joint axis 21, and their motion pattern is similar to the natural trajectory of a butterfly wing when it unfolds and retracts, thereby enabling the flexible film to obtain a continuous and smooth force transition when bending.

[0020] In this embodiment, each wing-shaped arm 23 is provided with a double-clamping wavy silicone clamp 24 at its end, which is used to clamp the end of the flexible film. Because the silicone clamp has a certain elasticity and friction, its wavy contact surface can increase the contact area with the flexible film during clamping, avoiding local indentations caused by single-point or single-line pressing. Simultaneously, the wavy surface can adaptively fit flexible films of different thicknesses, making it less prone to slippage at the film end during bending. The double-clamping structure can limit the film's upper and lower or inner and outer sides respectively, keeping the film in a controlled state as it moves with the wing-shaped arm 23. An elastic buffer layer 25 is provided below each double-clamping wavy silicone clamp 24, which absorbs minor impacts during clamping and reciprocating bending, further reducing the impact of rigid contact on the film surface.

[0021] The linkage transmission mechanism 3 includes a connecting rod 31, a secondary gear 32, a snap-fit ​​connecting handle 33, a rotating rod 34, and a primary gear 35. The drive assembly 4 includes a motor 41 and a drive rod 42. The motor 41 transmits torque to the rotating rod 34 through the drive rod 42. The rotating rod 34 drives the primary gear 35, which is fixed thereon, to rotate. After the primary gear 35 meshes with the secondary gear 32, it transmits the rotational motion output by the motor 41 to the secondary gear 32. The secondary gear 32 then drives the connecting rod 31 to swing through the snap-fit ​​connecting handle 33. After the connecting rod 31 is connected to the wing support 2, it converts the rotational motion of the gear into the opening and closing motion of the wing arm 23. Through this gear-connecting rod combination, the movement of the two wing arms 23 can be more coordinated, avoiding excessively rapid movement on one side that could cause the flexible film to twist or wrinkle locally.

[0022] The secondary gear 32 is equipped with 90° limit latches 36, 60° limit latches 37, and 45° limit latches 38. During use, the appropriate limit latch position can be selected according to the testing requirements of the flexible film, allowing the latch-type connecting handle 33 to engage with different limit positions, thereby limiting the effective rotation range of the secondary gear 32. Since the rotation range of the secondary gear 32 directly affects the swing amplitude of the connecting rod 31, and the swing amplitude of the connecting rod 31 affects the opening and closing angle of the wing-vein arm 23 around the wing-vein arm joint axis 21, by selecting 90°, 60°, or 45° limit latches, the film test state under different bending angles can be obtained more intuitively. This angle adjustment method does not rely on repeated estimation by the operator's feel, which can reduce test errors and improve the comparability of bending test results of different batches of film.

[0023] The wing vein angle scale 27, together with the wing vein arm joint shaft 21 and the linkage pointer screw 22, constitutes the wing vein angle indicating unit. The linkage pointer screw 22 is located at the center of the wing vein angle scale 27. When the wing vein arm 23 opens and closes under the drive of the linkage transmission mechanism 3, the linkage pointer screw 22 indicates the angle position on the wing vein angle scale 27 according to the movement of the wing vein arm 23. The operator can read the angle between the two wing vein arms 23 before, during, or after the equipment is stopped to determine the current bending state of the flexible film. When used in conjunction with the limit buckle, this angle indicating unit can be used to set the target angle and to check whether the actual opening and closing angle has reached the expected position.

[0024] As a specific testing method, this embodiment uses a PI film as a flexible substrate for testing. The PI film has dimensions of 50mm in length, 25mm in width, and 0.045mm in thickness. Before the test, the equipment is placed on a stable plane, and the mounting plate 1, fin support 2, fin arm joint shaft 21, linkage screw 26, connecting rod 31, snap-fit ​​connecting handle 33, and the meshing positions of each gear are checked to ensure that they are in a normal connection state. It is confirmed that there are no obvious foreign objects on the surface of the double-clamping wavy silicone clamp 24, and that the elastic buffer layer 25 has not been damaged, affecting the clamping effect. Then, the PI film flexible substrate is laid flat on top of a pair of fin arms 23, so that both ends of the PI film extend into the corresponding double-clamping wavy silicone clamp 24, and the length direction of the PI film is matched with the opening and closing direction of the two fin arms 23.

[0025] During clamping, ensure the end of the PI film is in contact with the upper part of the elastic buffer layer 25, and use the double-clamping wavy silicone clamp 24 to evenly clamp both ends of the PI film. After clamping, the PI film can be slightly stretched to make its surface naturally flat, but do not apply excessive pre-tension to avoid affecting the authenticity of stress distribution during subsequent bending. After clamping, the operator selects the 45°, 60°, or 90° limit buckle position according to the test requirements; when a small-amplitude bending verification is required, the 45° limit buckle 38 can be selected; when a medium-amplitude bending test is required, the 60° limit buckle 37 can be selected; and when a large opening angle or extreme bending state needs to be simulated, the 90° limit buckle 36 can be selected.

[0026] After the drive assembly 4 is activated, the motor 41 drives the rotating rod 34 to rotate via the drive rod 42. The primary gear 35 rotates synchronously with the rotating rod 34 and drives the secondary gear 32 to rotate. The secondary gear 32 pulls the connecting rod 31 via the snap-fit ​​handle 33. The connecting rod 31 then pushes the wing support 2, causing a pair of wing arms 23 to gradually open and close around the wing arm joint axis 21. During this process, both ends of the PI film move synchronously with the corresponding double-clamping wave-shaped silicone clamps 24, forming a continuous bend in the middle of the film. Because the opening and closing trajectory of the wing arms 23 is a biomimetic butterfly-wing arc change, the film will not be subjected to a sudden hard bend, but will bend along a gradually changing curvature, which helps to reduce the probability of wrinkling, cracking, or edge tearing.

[0027] The drive assembly 4 in this embodiment has a multi-speed adjustment function, which can change the rotation speed of the drive rod 42 through different speeds. The low speed is suitable for observation after initial clamping, slow bending of thin flexible films, and scenarios where the stability of the angle indication needs to be confirmed; the medium speed is suitable for routine reliability testing; and the high speed can be used for continuous bending efficiency testing of samples. Regardless of the speed used, the bending angle change can be observed through the fin angle scale 27, and the maximum opening and closing angle can be limited by the limit buckle to prevent the fin arm 23 from exceeding the set range. For tests that require repeated bending, the motor 41 can be reversed or reset after the target angle is reached, so that the fin arm 23 returns to the initial state, and then the next bending cycle can be performed.

[0028] To further improve the stress state during bending, this embodiment can also provide stress relief holes on the wing arm 23 according to the stress distribution. The stress relief holes are opened in different sizes from the high stress area to the low stress area, and their function is to weaken the rigidity abrupt change of the wing arm 23 in local areas, so that the wing arm 23 has a smoother deformation transition when under stress. The stress relief holes, together with the elastic buffer layer 25 and the double clamping wave-shaped silicone clamp 24, can reduce the local stress concentration of the flexible film from three aspects: the support end, the clamping end, and the bending trajectory, so that the flexible film is closer to the flexible opening and closing state in actual application scenarios during testing.

[0029] After bending, first stop the output of the drive component 4 and return the finned arm 23 to the open / closed position for easy sampling. Then, release the clamping of the two ends of the PI film by the double-clamping wavy silicone clamp 24, and remove the PI film flexible substrate for visual inspection, bending mark inspection, or subsequent performance testing. If other flexible film materials need to be replaced, the above clamping and angle setting steps can be repeated. Since the angle setting, clamping and fixing, and transmission bending of this invention are all completed by the mounting plate 1, finned support 2, linkage transmission mechanism 3, drive component 4, and angle indicating unit, the operator can complete the film bending test without using complex external clamps or multiple manual bending, thereby improving the convenience of small-scale laboratory tests and flexible film reliability testing.

[0030] In summary, this embodiment provides power through the drive component 4, transmits motion through the meshing of the primary gear 35 and the secondary gear 32, converts the rotational motion into the opening and closing motion of the wing-vein arm 23 via a snap-fit ​​connection handle 33 and connecting rod 31, and achieves stable clamping, buffering protection, and angle display of the flexible film with the help of the double-clamping wave-shaped silicone clamp 24, the elastic buffer layer 25, and the wing-vein angle scale 27. The entire bending process unfolds around the natural opening and closing trajectory of a biomimetic butterfly wing, maintaining the characteristics of portability, intuitive structure, and simple operation of the device, while improving the uniformity of force and test controllability during flexible film bending without deviating from the original technical solution.

[0031] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A portable variable-angle butterfly wing biomimetic flexible film bending device, comprising a mounting plate (1) and a wing vein support (2) disposed on the mounting plate (1), characterized in that: The mounting plate (1) is provided with a linkage transmission mechanism (3) and a wing vein opening angle scale (27) on the front side. The mounting plate (1) is provided with a drive assembly (4). The wing vein support (2) includes a pair of wing vein arms (23). Each wing vein arm (23) is provided with a double-clamping wave-shaped silicone clamp (24) at its end. The drive assembly (4) is connected to the linkage transmission mechanism (3). The linkage transmission mechanism (3) is connected to the wing vein support (2) and is used to drive the pair of wing vein arms (23) to open and close, so as to bend the flexible film clamped on the double-clamping wave-shaped silicone clamp (24).

2. The portable variable-angle butterfly-wing biomimetic flexible film bending device according to claim 1, characterized in that: The wing vein support (2) also includes a pair of wing vein arm joint shafts (21), and the pair of wing vein arms (23) are respectively connected to the corresponding wing vein arm joint shafts (21) and can open and close around the corresponding wing vein arm joint shafts (21).

3. The portable variable-angle butterfly-wing biomimetic flexible film bending device according to claim 2, characterized in that: Each of the dual-clamping wavy silicone clamps (24) has an elastic buffer layer (25) underneath.

4. The portable variable-angle butterfly-wing biomimetic flexible film bending device according to claim 2, characterized in that: The wing vein angle scale (27), the wing vein arm joint shaft (21), and the linkage pointer screw (22) constitute the wing vein angle indicating unit. The linkage pointer screw (22) is located at the center of the wing vein angle scale (27) and is used to indicate the angle between a pair of wing vein arms (23).

5. A portable variable-angle butterfly-wing biomimetic flexible film bending device according to claim 1, characterized in that: The linkage transmission mechanism (3) includes a connecting rod (31), a secondary gear (32), a snap-fit ​​connecting handle (33), a rotating rod (34), and a primary gear (35). The primary gear (35) is fixed on the rotating rod (34). The secondary gear (32) meshes with the primary gear (35). The secondary gear (32) is connected to the connecting rod (31) through the snap-fit ​​connecting handle (33). The connecting rod (31) is connected to the wing vein support (2).

6. A portable variable-angle butterfly-wing biomimetic flexible film bending device according to claim 5, characterized in that: The secondary gear (32) is provided with a 90° limiting buckle (36), a 60° limiting buckle (37) and a 45° limiting buckle (38).

7. A portable variable-angle butterfly-wing biomimetic flexible film bending device according to claim 5, characterized in that: The drive assembly (4) includes a motor (41) and a drive rod (42), wherein the motor (41) is connected to the rotating rod (34) via the drive rod (42).

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