A universal bending test device for flexible circuit boards

Abstract

This utility model discloses a universal bending test device for flexible circuit boards, comprising: a top plate with an arc-shaped support groove and a receiving groove, a swing shaft at the center of the arc-shaped support groove, and a sliding elongated hole at the bottom of the arc-shaped support groove; a first bending assembly including an elastic connecting module, a sliding column, a positioning seat, a first vacuum suction plate, and a first rotary drive mechanism, with the swing shaft and sliding column respectively connected to both ends of the elastic connecting module, the sliding column passing through the sliding elongated hole, a circular block at the top of the sliding column, the positioning seat connected to the circular block, and the first vacuum suction plate connected to the first rotary drive mechanism; and a second bending assembly including a second vacuum suction plate and a second rotary drive mechanism, the second vacuum suction plate passing through the receiving groove and connected to the second rotary drive mechanism. This utility model can be flexibly adjusted to adapt to different flexible circuit boards, has strong versatility, can effectively simulate actual conditions, and has high realism.

Description

Technical Field

[0001] This utility model relates to the field of circuit board testing, and in particular to a general-purpose bending test device for flexible circuit boards. Background Technology

[0002] Flexible printed circuit boards (FPCs) are highly reliable and extremely flexible printed circuit boards made with polyimide or polyester film as the substrate. They are characterized by high wiring density, light weight, thinness, and good bending properties.

[0003] The bending performance of flexible circuit boards is a key factor affecting product lifespan; therefore, the bending test of flexible circuit boards is a crucial test reflecting product lifespan. In existing technologies, fixed clamps hold both ends of the flexible circuit board, and a folding mechanism drives one of the clamps to rotate, thereby achieving the bending test. This device has a simple and fixed structure, cannot adapt to testing flexible circuit boards of different specifications, and has low flexibility in bending tests. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a universal bending test device for flexible circuit boards, capable of adapting to bending tests on flexible circuit boards of different specifications, exhibiting strong versatility and providing flexible and reliable bending tests.

[0005] A general-purpose bending test device for flexible circuit boards according to an embodiment of the present invention includes:

[0006] The top plate is provided with an arc-shaped support groove and a storage groove. The center of the arc-shaped support groove is provided with a swing shaft that is rotatably connected to the top plate. The storage groove is located on the side of the swing shaft away from the arc-shaped support groove. The bottom of the arc-shaped support groove is provided with a sliding elongated hole.

[0007] The first bending assembly includes an elastic connecting module, a sliding column, a positioning seat, a first vacuum suction plate, and a first rotary drive mechanism. The elastic connecting module is located below the top plate. The two ends of the elastic connecting module are respectively connected to a swing shaft and a sliding column. The sliding column passes through a sliding elongated hole. The top of the sliding column is provided with a circular block that is slidably connected to an arc support groove. The positioning seat is connected to the circular block. The first rotary drive mechanism is connected to the positioning seat. The first vacuum suction plate is connected to the first rotary drive mechanism.

[0008] The second bending assembly includes a second vacuum suction plate and a second rotary drive mechanism. The second vacuum suction plate is inserted into the receiving groove, and the second rotary drive mechanism is connected to the top plate.

[0009] In this embodiment, a number of support and positioning grooves are provided on the side of the arc support groove away from the swing axis, and the bottom of each support and positioning groove is provided with a positioning through hole that connects to the sliding elongated hole.

[0010] In this embodiment, the elastic connection module includes a guide sleeve, a guide post, and a spring. The guide post passes through the guide sleeve, one end of the guide sleeve is connected to a swing shaft, one end of the guide post is connected to a sliding post, and the two ends of the spring are connected to the guide post and the guide sleeve, respectively.

[0011] In this embodiment, the guide post is provided with a locking mechanism located below the top plate, which is used to lock the guide post and the top plate.

[0012] In this embodiment, the locking mechanism includes a screw hole seat and a screw. The screw hole seat is connected to the guide post, and the screw is connected to the screw hole seat.

[0013] In this embodiment, the first rotary drive mechanism includes a first cylinder, a first rack and a first gear. The first cylinder is connected to the positioning seat, the first rack is connected to the first cylinder, the first vacuum suction plate is rotatably connected to the positioning seat, the first gear is connected to the first vacuum suction plate, and the first gear is meshed with the first rack.

[0014] In this embodiment, the second rotary drive mechanism includes a second cylinder, a second rack, and a second gear. The second cylinder is connected to the top plate, the second rack is connected to the second cylinder, the second vacuum suction plate is rotatably connected to the top plate, the second gear is connected to the second vacuum suction plate, and the second gear is meshed with the second rack.

[0015] In this embodiment, a machine platform is provided at the bottom of the top plate, and an electrical control module electrically connected to the first rotary drive mechanism and the second rotary drive mechanism is provided in the machine platform.

[0016] The embodiments of this utility model have at least the following beneficial effects:

[0017] By utilizing the combination of the arc-shaped support groove and the sliding elongated hole, the first bending component can swing around the swing axis along a preset arc trajectory, allowing for flexible adjustment of the relative positions of the two bending components. This adapts to flexible circuit boards of different specifications and types, especially enabling bending tests on irregularly shaped flexible circuit boards, demonstrating strong versatility. Furthermore, a single loading process can perform bending tests on different dimensions of the flexible circuit board, effectively saving the line change time caused by reloading for turning tests. This results in high testing efficiency, simple operation, and a uniform loading positioning effect that not only matches the positioning effect in real applications but also effectively simulates actual application conditions. The test is highly realistic, with reliable and effective results. Moreover, the two bending components can be controlled to achieve specified bending patterns in different dimensions according to requirements, making the bending test highly operable, flexible, and reliable. The vacuum suction plate adsorbs and positions the flexible circuit board, effectively simulating the adhesive positioning effect in actual applications. This not only further improves the realism of the bending test simulation but also allows for flexible adjustment of the positioning angle and position, further ensuring the versatility of this testing device. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0019] Figure 1 This is a three-dimensional structural diagram of a general-purpose bending test device for flexible circuit boards according to an embodiment of the present utility model.

[0020] Figure 2 This is a three-dimensional structural diagram of the general-purpose bending test device for flexible circuit boards according to an embodiment of the present invention, viewed from another perspective.

[0021] Figure 3 This is a top view of the general-purpose bending test device for flexible circuit boards according to an embodiment of the present invention.

[0022] Figure 4 For along Figure 3 A schematic diagram of the cross-sectional structure of line A-A';

[0023] Figure 5 This is a three-dimensional structural diagram of the general-purpose bending test device for flexible circuit boards according to an embodiment of the present invention, after concealing the machine base and electrical control module.

[0024] Figure label:

[0025] Top plate 100, arc support groove 110, sliding elongated hole 111, storage groove 120, swing shaft 130, support positioning groove 140, positioning through hole 141, machine base 150, electrical control module 151;

[0026] The components include: a first bending assembly 200, an elastic connecting module 210, a guide sleeve 211, a guide post 212, a spring 213, a sliding post 220, a circular block 221, a positioning seat 230, a first vacuum suction plate 240, a first rotary drive mechanism 250, a first cylinder 251, a first rack 252, a first gear 253, a screw hole seat 260, and a screw 261.

[0027] The second bending assembly 300, the second vacuum suction plate 310, the second rotary drive mechanism 320, the second cylinder 321, the second rack 322, and the second gear 323. Detailed Implementation

[0028] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0029] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, left, right, front, and back, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] In the description of this utility model, if the wire sleeve or bracket is mentioned, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0031] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0032] Flexible printed circuit boards (FPCs), also known as flexible printed circuit boards, are highly reliable and extremely flexible printed circuit boards made with polyimide or polyester film as the substrate. They are characterized by high wiring density, light weight, thinness, and good bendability. The bending performance of flexible circuit boards is a key factor affecting product lifespan; therefore, bending tests on flexible circuit boards are a crucial test reflecting product lifespan.

[0033] In existing technologies, a fixed clamp is used to hold both ends of the flexible circuit board, and one of the clamps is driven to rotate by a folding mechanism to achieve the bending test of the flexible circuit board. This device has a simple and fixed structure, which can only be used to test a limited number of flexible circuit boards of different specifications. It cannot be used to test flexible circuit boards of different specifications, resulting in low flexibility in bending tests. In particular, existing devices cannot effectively and reliably test irregularly shaped flexible circuit boards. In addition, the existing clamping structure is prone to damaging the surface of the flexible circuit board, introducing instability factors, making it difficult to achieve effective test judgment, and failing to effectively reflect the actual application scenario.

[0034] The following is for reference only. Figure 1 To be continued Figure 5 This invention describes a universal bending test device for flexible circuit boards, which can adapt to bending tests on flexible circuit boards of different specifications. It is highly versatile and the bending test is flexible and reliable.

[0035] Reference Figures 1 to 5 A general-purpose bending test device for flexible circuit boards according to an embodiment of the present invention includes:

[0036] The top plate 100 is provided with an arc-shaped support groove 110 and a storage groove 120. The arc-shaped support groove 110 is arranged in an arc shape parallel to the horizontal plane. The length of the arc-shaped support groove 110 is greater than its width. A swing shaft 130 is provided at the center of the arc-shaped support groove 110 and is rotatably connected to the top plate 100. The storage groove 120 is located on the side of the swing shaft 130 away from the arc-shaped support groove 110. The bottom of the arc-shaped support groove 110 is provided with a sliding elongated hole 111. The length of the sliding elongated hole 111 is greater than its width, and the width of the support groove is greater than the width of the sliding elongated hole 111. The sliding elongated hole 111 penetrates the bottom of the support groove and the bottom surface of the top plate 100 from the top and bottom, respectively. The horizontal projection of the elongated hole fits the horizontal projection of the support groove.

[0037] The first bending assembly 200 includes an elastic connecting module 210, a sliding column 220, a positioning seat 230, a first vacuum suction plate 240, and a first rotary drive mechanism 250. The elastic connecting module 210 is located below the top plate 100 and is used to make way for the flexible circuit board to be laid on the top plate 100. The two ends of the elastic connecting module 210 are respectively connected to the swing shaft 130 and the sliding column 220, so that the sliding column 220 tends to move radially along the arc support groove 110. The sliding column 220 passes through the sliding elongated hole 111, and the top of the sliding column 220 is provided with a circular block 221 that is slidably connected to the arc support groove 110. The bottom of the groove 110 is used to support the circular block 221. The positioning seat 230 is connected to the circular block 221 and is located on the top plate 100. The first rotary drive mechanism 250 is connected to the positioning seat 230. The first vacuum suction plate 240 is connected to the first rotary drive mechanism 250. The first rotary drive mechanism 250 is used to drive the first vacuum suction plate 240 to rotate around a rotating axis parallel to the horizontal plane. The first vacuum suction plate 240 is also rotatably connected to the positioning seat 230, which can effectively improve the stability of the position of the first vacuum suction plate 240. The first vacuum suction plate 240 has strong adsorption and positioning flexibility and can effectively adapt to flexible circuit boards of different shapes.

[0038] The second bending assembly 300 includes a second vacuum suction plate 310 and a second rotary drive mechanism 320. The second vacuum suction plate 310 is inserted into the storage groove 120, and is rotatably connected to the top plate 100. The second rotary drive mechanism 320 is connected to the top plate 100 and is also connected to the second rotary drive mechanism 320. The rotary drive mechanism is used to drive the second vacuum suction plate 310 to rotate around a pivot parallel to the horizontal plane. The second vacuum suction plate 310 is also rotatably connected to the top plate 100, which can effectively improve the stability of the position of the second vacuum suction plate 310. The second vacuum suction plate 310 has strong adsorption and positioning flexibility and can effectively adapt to flexible circuit boards of different shapes.

[0039] During operation, the position of the positioning seat 230 is adjusted according to the shape of the flexible circuit board to be tested. The positioning seat 230 is moved, the sliding column 220 slides in the sliding elongated hole 111, and the circular block 221 slides in the arc support groove 110 until the positioning seat 230 reaches the required position. Under the elastic drive of the elastic connection module 210, the positioning seat 230 remains stationary relative to the top plate 100 without any other external force. The flexible circuit board to be tested is placed above the top plate 100. The first vacuum suction plate 240 adsorbs a part of the flexible circuit board, and the second vacuum suction plate 310 adsorbs another part of the flexible circuit board. The first rotary drive mechanism 250 drives the first vacuum suction plate 240 to rotate to achieve the bending test of the corresponding part, and the second rotary drive mechanism 320 can drive the second vacuum suction plate 310 to rotate to achieve the bending test of the corresponding part.

[0040] Through the cooperation of the arc-shaped support groove 110 and the sliding elongated hole 111, the first bending component 200 can swing around the swing axis 130 along a preset arc trajectory, which can flexibly adjust the relative position of the two bending components, thereby adapting to flexible circuit boards of different specifications and types. It can not only perform bending tests on conventional linear flexible circuit boards, but also perform bending tests on other non-linear irregularly shaped flexible circuit boards. For example, it can adapt to bending tests on not only straight flexible circuit boards, but also L-shaped flexible circuit boards, which has strong versatility. In addition, bending tests on different dimensions of flexible circuit boards can be carried out in a single loading, which can effectively save the line change time caused by reloading due to turning tests. The test efficiency is high, the operation is simple, and the positioning effect of uniform loading is not only consistent with the actual The positioning effect during application is consistent with the bending test, which can effectively simulate actual application conditions. The test is highly realistic, and the test results are reliable and effective. Moreover, according to the requirements, the two bending components can be controlled to achieve a specified bending pattern in different dimensions. The bending test is highly operable, flexible, and reliable. The flexible circuit board is surface-bonded and positioned by a vacuum suction plate, which can effectively simulate the bonding positioning effect in actual applications. This not only further improves the realism of the bending test simulation, but also allows for flexible adjustment of the positioning angle and position, thus adapting to flexible circuit boards of different shapes and sizes. This further ensures the versatility of this testing device. Compared with the clamping positioning structure in traditional technologies, the vacuum suction plate of this testing device can avoid mechanical clamping damage.

[0041] Understandably, the arc-shaped support groove 110 has several support and positioning grooves 140 on the side away from the swing axis 130. The bottom of each support and positioning groove 140 has a positioning through hole 141 that connects to the sliding elongated hole 111. The elastic connection module 210 is used to make the sliding column 220 move away from the swing axis 130. Then, the sliding column 220 and the circular block 221 can automatically enter the positioning through hole 141 and the support and positioning groove 140 to be positioned in the designated position.

[0042] When the circular block 221 moves with the sliding column 220 to the side of the corresponding support positioning groove 140, under the elastic force of the elastic connecting module 210, the circular block 221 automatically embeds into the support positioning groove 140. At the same time, the sliding column 220 inserts into the positioning through hole 141 to achieve positioning, ensuring that the first bending assembly 200 does not move during the test. This design allows for quick switching between different bending angles, such as 90°, 180°, 270°, and other settings.

[0043] It is understood that the elastic connection module 210 includes a guide sleeve 211, a guide post 212, and a spring 213. The guide post 212 passes through the guide sleeve 211. One end of the guide sleeve 211 facing away from the guide post 212 is connected to the swing shaft 130, and the other end of the guide post 212 facing away from the guide sleeve 211 is connected to the sliding post 220. The circumferential surface of the guide post 212 has an outer flange. The two ends of the spring 213 are respectively connected to the outer flange of the guide post 212 and the guide sleeve 211, so that the guide post 212 tends to move away from the guide sleeve 211. Specifically, the channel opening of the guide sleeve 211 has an annular limiting structure for locking the outer flange of the guide post 212, which can effectively prevent the guide post 212 and the guide sleeve 211 from completely separating.

[0044] Understandably, the guide post 212 is equipped with a locking mechanism located below the top plate 100, which can ensure that the top surface of the top plate 100 is clean. The locking mechanism is used to lock the guide post 212 and the top plate 100 to improve the reliability of the bending test operation.

[0045] Understandably, the locking mechanism includes a screw seat 260 and a screw 261. The screw seat 260 is connected to the guide post 212, and the screw 261 is connected to the screw seat 260. The screw seat 260 has a screw hole facing the bottom surface of the top plate 100. By tightening the screw 261, the position between the screw seat 260 and the top plate 100 can be locked. In addition to the structure described above, which includes the screw seat 260 and the screw 261, the locking mechanism may also include a buffer block connected to the tail of the screw 261. The buffer block can be made of polyurethane to reduce mechanical wear.

[0046] It is understood that the first rotary drive mechanism 250 includes a first cylinder 251, a first rack 252, and a first gear 253. The first cylinder 251 is connected to the positioning seat 230, and the first rack 252 is connected to the first cylinder 251. The first cylinder 251 is used to drive the first rack 252 to translate relative to the positioning seat 230. The first vacuum suction plate 240 is rotatably connected to the positioning seat 230. The first gear 253 is connected to the first vacuum suction plate 240, and the central axis of the first gear 253 is collinear with the rotation axis of the first vacuum suction plate 240 rotatably connected to the positioning seat 230. The first gear 253 meshes with the first rack 252. The first rack 252 is driven to reciprocate and translate by the first cylinder 251, and the first vacuum suction plate 240 is driven to reciprocate and rotate by the first gear 253.

[0047] It is understood that the second rotary drive mechanism 320 includes a second cylinder 321, a second rack 322, and a second gear 323. The second cylinder 321 is connected to the top plate 100, and the second rack 322 is connected to the second cylinder 321. The second cylinder 321 is used to drive the second rack 322 to translate relative to the positioning seat 230. The second vacuum suction plate 310 is rotatably connected to the top plate 100. The second gear 323 is connected to the second vacuum suction plate 310, and the central axis of the second gear 323 is collinear with the rotation axis of the second vacuum suction plate 310, which is rotatably connected to the positioning seat 230. The second gear 323 meshes with the second rack 322. The second rack 322 is driven to reciprocate and translate through the second cylinder 321, and the second vacuum suction plate 310 is driven to reciprocate and rotate through the second gear 323.

[0048] Understandably, a machine base 150 is provided at the bottom of the top plate 100. The machine base 150 is equipped with an electrical control module 151 that is electrically connected to the first rotary drive mechanism 250 and the second rotary drive mechanism 320. The electrical control module 151 can not only control the rotation of the first rotary drive mechanism 250 and the second rotary drive mechanism 320, but also monitor the drive frequency of the first rotary drive mechanism 250 and the second rotary drive mechanism 320 and display it through an external display module.

[0049] When the first rotary drive mechanism 250 is configured to include a first cylinder 251, a first rack 252, and a first gear 253, and the second rotary drive mechanism 320 is configured to include a second cylinder 321, a second rack 322, and a second gear 323, the controlled ends of the first cylinder 251 and the second cylinder 321 are both connected to the control port of the electronic control module 151. The electronic control module 151 controls the first cylinder 251 and the second cylinder 321 to drive them to perform a specified number of reciprocating movements according to the actual bending test requirements, thereby driving the first vacuum suction plate 240 and the second vacuum suction plate 310 to perform corresponding reciprocating bending movements. The specific electrical connection structure can be designed according to the actual application requirements. The circuit part is not the design focus of this application, and these conventional circuit designs can be implemented using existing circuit modules.

[0050] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A universal bending test device for flexible circuit boards, characterized in that, include: The top plate (100) is provided with an arc support groove (110) and a storage groove (120). The center of the arc support groove (110) is provided with a swing shaft (130) rotatably connected to the top plate (100). The storage groove (120) is located on the side of the swing shaft (130) away from the arc support groove (110). The bottom of the arc support groove (110) is provided with a sliding elongated hole (111). The first bending assembly (200) includes an elastic connection module (210), a sliding column (220), a positioning seat (230), a first vacuum suction plate (240), and a first rotary drive mechanism (250). The elastic connection module (210) is located below the top plate (100). The two ends of the elastic connection module (210) are respectively connected to the swing shaft (130) and the sliding column (220). The sliding column (220) passes through the sliding elongated hole (111). The top of the sliding column (220) is provided with a circular block (221) that is slidably connected to the arc support groove (110). The positioning seat (230) is connected to the circular block (221). The first rotary drive mechanism (250) is connected to the positioning seat (230). The first vacuum suction plate (240) is connected to the first rotary drive mechanism (250). The second bending assembly (300) includes a second vacuum suction plate (310) and a second rotary drive mechanism (320). The second vacuum suction plate (310) is inserted into the receiving groove (120). The second rotary drive mechanism (320) is connected to the top plate (100). The second vacuum suction plate (310) is connected to the second rotary drive mechanism (320).

2. The universal bending test apparatus for a flexible circuit board according to claim 1, wherein The arc-shaped support groove (110) is provided with a plurality of support positioning grooves (140) on the side away from the swing shaft (130), and the bottom of each support positioning groove (140) is provided with a positioning through hole (141) that connects to the sliding elongated hole (111).

3. The universal bending test device for flexible circuit boards according to claim 2, characterized in that, The elastic connection module (210) includes a guide sleeve (211), a guide post (212), and a spring (213). The guide post (212) passes through the guide sleeve (211). One end of the guide sleeve (211) is connected to the swing shaft (130), and one end of the guide post (212) is connected to the sliding post (220). The two ends of the spring (213) are respectively connected to the guide post (212) and the guide sleeve (211).

4. The universal bending test apparatus for a flexible circuit board according to claim 3, wherein The guide post (212) is provided with a locking mechanism located below the top plate (100), the locking mechanism being used to lock the guide post (212) and the top plate (100).

5. The universal bending test apparatus for a flexible circuit board according to claim 4, wherein The locking mechanism includes a screw hole seat (260) and a screw (261). The screw hole seat (260) is connected to the guide post (212), and the screw (261) is connected to the screw hole seat (260).

6. The universal bending test apparatus for a flexible circuit board according to claim 1, wherein The first rotary drive mechanism (250) includes a first cylinder (251), a first rack (252) and a first gear (253). The first cylinder (251) is connected to the positioning seat (230), the first rack (252) is connected to the first cylinder (251), the first vacuum suction plate (240) is rotatably connected to the positioning seat (230), the first gear (253) is connected to the first vacuum suction plate (240), and the first gear (253) meshes with the first rack (252).

7. The universal bending test apparatus for a flexible circuit board according to claim 1, wherein The second rotary drive mechanism (320) includes a second cylinder (321), a second rack (322), and a second gear (323). The second cylinder (321) is connected to the top plate (100), the second rack (322) is connected to the second cylinder (321), the second vacuum suction plate (310) is rotatably connected to the top plate (100), the second gear (323) is connected to the second vacuum suction plate (310), and the second gear (323) meshes with the second rack (322).

8. The universal bending test apparatus for a flexible circuit board according to claim 1, wherein The bottom of the top plate (100) is provided with a machine platform (150), and the machine platform (150) is provided with an electrical control module (151) that is electrically connected to the first rotary drive mechanism (250) and the second rotary drive mechanism (320).

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