An electronic component-based test apparatus and method

Abstract

The application discloses a kind of test equipment and method based on electronic components, including bottom shell, rotating installation in the center position of bottom shell top by pivot, several right angle vertical arms of annular equidistance distribution in the bottom shell top outside of rotating platform and several right angle vertical arm top collectively installed lifting assembly, the driving end of lifting assembly is installed with radial adjustable presser that keeps perpendicular to sliding fit with right angle vertical arm, rectangular gap is provided in the inside of rotating platform below radial adjustable presser, and sliding type fixture is installed in rectangular gap.This application adjusts the interval between sliding type fixture, radial adjustable presser and cam deflection executor, combined with the use of cam deflection executor, forms customized stress point setting, multi-station parallel test architecture, highly synchronized multi-station bending frequency consistent control, to overcome the limitations of traditional single-point single-piece test method.

Description

Technical Field

[0001] This invention relates to the field of circuit board performance testing technology, specifically to a testing device and method based on electronic components. Background Technology

[0002] Fatigue testing of the robustness of electronic components on flexible printed circuit boards (PCBs) is a key reliability verification process that simulates repeated mechanical stress conditions under actual use and systematically evaluates the mechanical durability of the connection interface. This involves applying periodic or repetitive dynamic deformation to accelerate the activation of potential failure modes that may occur under long-term bending, twisting, or vibration, such as solder joint microcracks, package cracking, conductive adhesive failure, cover film delamination, and copper foil breakage. In specific tests, the direction and position of force are precisely controlled using fixtures, and periodic interruption points are set. During these interruptions, electrical continuity tests, visual optical microscopy inspections, and, when necessary, precise inspections using X-ray or scanning acoustic microscopy are performed to monitor the failure progression. As disclosed in patent application CN221238792U, a rapid and accurate bending test device for flexible circuit boards includes a worktable, a frame, a transmission assembly, a clamping assembly, a test assembly, and a control system. The worktable has a transmission groove, the frame stands on the worktable, and the upper and lower ends of the transmission assembly are respectively engaged with the frame and the transmission groove. The clamping assembly is mounted on the transmission assembly. The test assembly and control system are both located on the worktable, and the control system is signal-connected to the transmission assembly. By designing the transmission assembly, clamping assembly, and test assembly to cooperate, it performs continuous linear bending tests on the flexible circuit board, which is more comprehensive than traditional localized discrete bending tests. While accurate, the aforementioned technical solution involves clamping the two ends of the flexible circuit board during use. Consequently, the periodic bending interruption point is always located near the middle of the flexible circuit board. In real-world applications, the flexible circuit board may experience different bending stresses in different environments. Especially during installation and operation, the bending location and angle of the flexible circuit board may vary. Therefore, fixing the bending point during testing can easily lead to test results that fail to accurately reflect the performance in actual use. Furthermore, it is only a single-piece, single-station testing mode. In actual production environments, flexible circuit boards often require large-scale quality inspections in a short period of time, and the single-piece testing mode cannot meet this requirement. Summary of the Invention

[0003] The purpose of this invention is to provide a testing device and method based on electronic components. Multiple flexible circuit boards to be tested for bending fatigue are placed on equidistantly distributed sliding supports in a ring. The spacing between the sliding supports, radially adjustable pressure plates, and cam-type deflection actuators is adjusted according to the periodic bending interruption points of the flexible circuit boards. After adjustment, a lifting assembly drives each radially adjustable pressure plate to press against the flexible circuit board and the sliding supports. The other end of the flexible circuit board is fixed by the cam-type deflection actuator. Then, a stepper motor is activated via a central control box. The stepper motor outputs rotational power to each cam-type deflection actuator through a multi-directional gear drive group, driving the cam-type deflection actuator to bend the flexible circuit board at a certain frequency until completion, thereby solving the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a testing device based on electronic components, comprising a base shell, a turntable rotatably mounted at the center of the top of the base shell via a rotating shaft, a plurality of right-angled vertical arms equidistantly distributed in a ring on the top of the base shell outside the turntable, and a lifting assembly mounted on the top of the plurality of right-angled vertical arms. The driving end of the lifting assembly is equipped with a radially adjustable pressure fixture that slides vertically with the right-angled vertical arms. A rectangular notch is provided inside the turntable below the radially adjustable pressure fixture, and a sliding support is installed in the rectangular notch. A cam-type deflector is installed at the top of the bottom shell on one side of the right-angle arm. This cam-type deflector allows the flexible circuit board, which limits the movement between the sliding support and the radially adjustable pressure, to bend cyclically. A gear multi-directional drive assembly is installed at the top of the bottom shell, and a stepper motor is installed on one side of the bottom of the bottom shell. The output shaft of the stepper motor transmits rotational power synchronously to each cam-type deflector through the gear multi-directional drive assembly. A central control box is installed on one side of the bottom shell surface. The output end of the central control box is electrically connected to the input end of the lifting assembly, the radially adjustable pressure, the cam-type deflector, and the stepper motor.

[0005] Preferably, the sliding support includes linear guide rails installed on the left and right walls inside the rectangular notch and a support platform that is slidably installed between the two linear guide rails via a slider, the upper surface of the support platform being higher than the upper surface of the turntable.

[0006] Preferably, the radially adjustable pressure fixture includes an L-shaped horizontal frame that is slidably mounted on the outer wall of a right-angled upright arm via a track, two support rods fixed on the outer wall of the L-shaped horizontal frame away from the right-angled upright arm, and an end plate fixed to the ends of the two support rods. Pressure blocks are slidably mounted on the two support rods, and a second hydraulic cylinder is mounted on one outer wall of the pressure block. The piston rod end of the second hydraulic cylinder is fixedly connected to one outer wall of the end plate, and the input end of the second hydraulic cylinder is electrically connected to the output end of the central control box. The L-shaped horizontal frame is located directly above the support platform.

[0007] Preferably, the lifting assembly includes a cylinder platform fixed to the upper end of several right-angled uprights, a hydraulic cylinder installed at the center of the top of the cylinder platform, and an upper rod platform installed on the upper end of the piston rod of the hydraulic cylinder. A guide column extending downward to the outside of the cylinder platform is installed at the bottom corner of the upper rod platform. A lower rod platform is fixed to the lower end of the four guide columns. One side of the outer wall of the lower rod platform is fixedly connected to one side of the outer wall of the L-shaped horizontal frame.

[0008] Preferably, a servo motor is installed at the top of the lower rod platform, the output shaft of the servo motor is fixed to an internal spline shaft through a coupling, the input end of the servo motor is electrically connected to the output end of the central control box, and an external spline shaft is fixed at the center position of the top of the turntable, with the upper end of the external spline shaft extending into the interior of the internal spline shaft.

[0009] Preferably, the cam-type deflector includes a concave base fixed to the top of the bottom shell, a lifting arm mounted inside the concave base via a hinge shaft, and two L-shaped sheet metal seats fixed to the top of the lifting arm. Electric chucks are mounted on the tops of the two L-shaped sheet metal seats, with the input end of the electric chucks electrically connected to the output end of the central control box. Main tension springs are hung on the outer walls of the two L-shaped sheet metal seats, which are far apart. The lower ends of the main tension springs are hung on the bottom of the concave base. A vertical shaft is rotatably mounted inside the concave base below the lifting arm via a ball bearing. A cylindrical cam is fixed to the top of the vertical shaft. A diagonal pull arm is fixed to the bottom of the lifting arm, and a roller that keeps in contact with the top edge of the cylindrical cam is rotatably mounted on the lower end of the diagonal pull arm.

[0010] Preferably, a spoon plate is fixed on both outer walls of the concave platform, and a protruding pin is fixed on both outer walls of the lifting arm. A secondary tension spring is connected between the protruding pin and the spoon plate.

[0011] Preferably, the multi-directional gear drive assembly includes a square steel structure top frame fixed to the top of the bottom shell, an external gear ring rotatably mounted at the center of the bottom end of the square steel structure top frame, and multiple driven gear shafts rotatably mounted at equal intervals in a ring at the bottom end of the square steel structure top frame outside the external gear ring. The driven gear shafts mesh with the external gear ring, and a sprocket drive pair is installed between the upper end of the external gear ring and the lower end of the vertical shaft.

[0012] Preferably, a probe plate is fixed to the lower end of the vertical shaft, and a slotted photoelectric counter is installed on one side of the bottom of the square steel structure top frame. The output end of the slotted photoelectric counter is electrically connected to the input end of the central control box.

[0013] This invention also provides a testing method based on electronic components, using the testing equipment described above, comprising the following steps: S101: Place multiple flexible circuit board samples to be tested one by one on each sliding support. According to the predetermined target bending point position of each sample, synchronously adjust the radial coordinates of the sliding support and the radially adjustable pressure to adjust the distance between the sliding support, the radially adjustable pressure and the cam-type deflection actuator. S102: Manually install and secure one end of each flexible circuit board onto the corresponding cam-type deflector. Then, start the lifting assembly through the central control box. The lifting assembly drives all radially adjustable pressure fixtures to descend synchronously and smoothly, pressing the proximal end of each flexible circuit board and the sliding support below it firmly with uniform and controllable pressure. S103: Set the operating frequency of the stepper motor on the human-machine interface of the central control box. The speed and working time of the stepper motor are proportional to the bending cycle frequency of the flexible circuit board. The stepper motor decomposes the rotational power through the multi-directional gear drive group and transmits it synchronously to all the cam-type deflection actuators arranged in a ring at equal intervals. The cam-type deflection actuators periodically push the free end of the fixed flexible circuit board, forcing each sample to undergo repetitive, trajectory-controlled flexural deformation around its preset bending interruption point. S104: When the preset number of cycles is reached or an abnormality is detected and manual stop is performed, the stepper motor is stopped through the central control box, and the lifting assembly is controlled to raise all radially adjustable pressure fixtures. Each flexible circuit board sample that has completed the fatigue test is removed from the cam-type deflection actuator and sliding bracket, and numbered and marked. Finally, the integrity status of its electronic component solder joints, circuits and substrate is evaluated after the specified number of bending fatigue cycles.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: The testing equipment and method based on electronic components, through the structure of the coordinated lifting assembly, radially adjustable pressure fixture, sliding support, cam-type deflector, stepper motor and gear multi-directional drive group, can place multiple flexible circuit boards to be tested one by one on each sliding support distributed in a ring at equal intervals. By adjusting the distance between the sliding support, the radially adjustable pressure fixture and the cam-type deflector, and in combination with the use of the cam-type deflector, a customized stress point setting, a multi-station parallel testing architecture and highly synchronized multi-station bending frequency consistent control are formed, thereby overcoming the limitations of the traditional single-point single-piece testing method. By coordinating the spacing between the sliding bracket, the radially adjustable pressure fixture, and the cam-type deflector, the periodic bending interruption point of each test sample can be precisely set, i.e., the location where the maximum strain occurs. This overcomes the traditional mode where clamping at both ends can only be fixed at the midpoint for bending. It allows for flexible configuration of stress concentration areas according to the actual installation state of the product, making the test points closer to the actual application situation and ensuring that the test results are more representative. Secondly, through the multi-station parallel test architecture with equidistant ring distribution, multiple sliding brackets and radially adjustable pressure fixtures allow multiple flexible circuit board samples to be installed and tested simultaneously. All cam-type deflectors are synchronously driven by the same drive system, namely stepper motors and gear multi-directional drive groups. This enables multi-station parallel fatigue testing, significantly increasing the number of test samples that can be completed in the same amount of time, thereby obtaining more data in a short time and thus more comprehensively evaluating the reliability of the product. In the final solution, the stepper motor is controlled by the central control box, and the power is distributed to each cam-type deflection actuator through the gear multi-directional drive group. All the samples under test are bent at the same time, in the same environment, by the same power source, and at the same frequency and phase. This effectively eliminates the errors caused by equipment state drift, environmental parameter fluctuations, or operational differences in traditional serial testing. Moreover, the cam-type deflection actuator provides flexural deformation that conforms to the actual mechanical process, making the bending simulation process of the flexible circuit board closer to its constrained bending mechanical state in the actual product. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a side view of the structure of the present invention; Figure 3 This is a side cross-sectional view of the present invention. Figure 4 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ; Figure 5 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ; Figure 6 This is a three-dimensional cross-sectional structural diagram of the present invention; Figure 7 This is a three-dimensional structural diagram of the lifting component of the present invention; Figure 8 This is a three-dimensional structural diagram of the radially adjustable pressure fixture of the present invention; Figure 9 For the present invention Figure 4 Enlarged structural diagram at point A in the middle; Figure 10 This is a three-dimensional structural diagram of the multi-directional gear drive assembly of the present invention; Figure 11 For the present invention Figure 11 Enlarged structural diagram at point B; Figure 12 This is a schematic diagram of the three-dimensional structure of the cam-type deflection actuator of the present invention. Figure 1 ; Figure 13 This is a schematic diagram of the three-dimensional structure of the cam-type deflection actuator of the present invention. Figure 2 .

[0016] In the diagram: 1. Base shell; 2. Right-angle boom; 3. Lifting assembly; 301. Cylinder platform; 302. Hydraulic cylinder one; 303. Upper rod platform; 304. Guide column; 305. Lower rod platform; 306. Servo motor; 307. Internal spline shaft; 308. External spline shaft; 4. Turntable; 401. Rectangular notch; 5. Sliding bracket; 501. Linear guide rail; 502. Support platform; 6. Radial adjustable pressure fixture; 601. L-shaped frame; 602. Support rod; 603. End plate; 604. Pressure block; 605. Hydraulic cylinder two; 7. Cam-type deflection actuator 701. Concave base; 702. Lifting arm; 703. L-shaped sheet metal base; 704. Electric chuck; 705. Vertical shaft; 706. Cylindrical cam; 707. Slanted pull arm; 708. Roller; 709. Main tension spring; 710. Spoon plate; 711. Convex pin; 712. Secondary tension spring; 8. Stepper motor; 9. Square steel structure top frame; 10. Gear multi-directional drive group; 1001. Driven gear shaft; 1002. External gear ring; 1003. Sprocket drive pair; 1004. Slotted photoelectric counter; 1005. Probe plate; 11. Central control box. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0018] Example 1, by Figures 1 to 6 The present invention includes a base shell 1, a turntable 4 rotatably mounted at the center of the top of the base shell 1 via a pivot, a plurality of right-angled arms 2 equidistantly distributed in a ring on the top of the base shell 1 outside the turntable 4, and a lifting assembly 3 mounted on the top of the plurality of right-angled arms 2. The driving end of the lifting assembly 3 is equipped with a radially adjustable pressure 6 that slides vertically with the right-angled arms 2. A rectangular notch 401 is provided inside the turntable 4 below the radially adjustable pressure 6, and a sliding support 5 is installed in the rectangular notch 401. A cam-type deflector 7 is installed on the top of the bottom shell 1 on one side of the right-angle arm 2. This cam-type deflector 7 is used to allow the flexible circuit board that limits the movement between the sliding support 5 and the radially adjustable pressure 6 to be cyclically bent. A gear multi-directional drive group 10 is installed on the top of the bottom shell 1. A stepper motor 8 is installed on one side of the bottom of the bottom shell 1. The output shaft of the stepper motor 8 transmits rotational power synchronously to each cam-type deflector 7 through the gear multi-directional drive group 10. A central control box 11 is installed on one side of the surface of the bottom shell 1. The output end of the central control box 11 is electrically connected to the input end of the lifting assembly 3, the radially adjustable pressure 6, the cam-type deflector 7, and the stepper motor 8.

[0019] This embodiment of a testing method based on electronic components, using the aforementioned testing equipment, includes the following steps: S101: Place multiple flexible circuit board samples to be tested one by one on each sliding support 5. According to the predetermined target bending point position of each sample, synchronously adjust the radial coordinates of the sliding support 5 and the radially adjustable pressure 6 to adjust the distance between the sliding support 5, the radially adjustable pressure 6 and the cam-type deflection actuator 7. S102: Manually install and fix one end of each flexible circuit board securely on the corresponding cam-type deflection actuator 7, and then start the lifting assembly 3 through the central control box 11. The lifting assembly 3 drives all radially adjustable pressure fixtures 6 to descend synchronously and smoothly, so as to firmly press the near end of each flexible circuit board and the sliding support 5 below it with uniform and controllable pressure. S103: Set the operating frequency of the stepper motor 8 on the human-machine interface of the central control box 11. The speed and working time of the stepper motor 8 are proportional to the bending cycle frequency of the flexible circuit board. The stepper motor 8 decomposes the rotational power through the gear multi-directional drive group 10 and transmits it synchronously to all the cam-type deflection actuators 7 arranged in a ring at equal intervals. The cam-type deflection actuators 7 periodically push the free end of the fixed flexible circuit board, forcing each sample to undergo repetitive, trajectory-controlled flexural deformation around its preset bending interruption point. S104: When the preset number of cycles is reached or an abnormality is detected and the process is manually stopped, the stepper motor 8 is stopped through the central control box 11, and the lifting assembly 3 is controlled to raise all radially adjustable pressure fixtures 6. Each flexible circuit board sample that has completed the fatigue test is removed from the cam-type deflection actuator 7 and the sliding bracket 5, and is numbered and marked. Finally, the integrity status of its electronic component solder joints, circuits and substrate is evaluated after a specified number of bending fatigue cycles.

[0020] Example 2, based on Example 1, is... Figure 7 , Figure 8 and Figure 9As shown, the sliding support 5 includes linear guide rails 501 installed on the left and right walls inside the rectangular notch 401 and a support platform 502 slidably installed between the two linear guide rails 501 by a slider. The upper surface of the support platform 502 is higher than the upper surface of the turntable 4. When the staff adjusts the distance between the sliding support 5 and the cam-type deflector 7, they manually pull the support 502 so that the support 502 slides along the length of the linear guide 501, so that the support 502 moves closer to or further away from the cam-type deflector 7. This allows the support 502 to support the near end of the flexible circuit board and allows the operator to adjust the predetermined bending break point position of each test board. The radially adjustable pressure fixture 6 includes an L-shaped horizontal frame 601 that is slidably mounted vertically on the outer wall of the right-angled vertical arm 2 via a track, two support rods 602 fixed on the outer wall of the L-shaped horizontal frame 601 away from the right-angled vertical arm 2, and an end plate 603 that is fixed to the ends of the two support rods 602. Pressure blocks 604 are slidably mounted on the two support rods 602. A second hydraulic cylinder 605 is mounted on one side of the outer wall of the pressure block 604. The piston rod end of the second hydraulic cylinder 605 is fixedly connected to one side of the outer wall of the end plate 603. The input end of the second hydraulic cylinder 605 is electrically connected to the output end of the central control box 11. The L-shaped horizontal frame 601 is located directly above the support platform 502. After the sliding support 5 is adjusted, the staff opens the hydraulic cylinder 605 through the central control box 11. When the piston rod of the hydraulic cylinder 605 extends, since the support rod 602 and the end plate 603 are fixed, the cylinder body of the hydraulic cylinder 605 will drive the pressure block 604 to slide towards the right-angle vertical arm 2 until the pressure block 604 is adjusted to the top of the support platform 502. This makes it convenient to use the pressure block 604 and the support platform 502 to fix the near end of the flexible circuit board and simulate the specific bending position of the flexible circuit board in different products due to the limitation of installation space, rather than forcing all samples to bend at the geometric center. The lifting assembly 3 includes a cylinder platform 301 fixed to the upper end of several right-angled vertical arms 2, a hydraulic cylinder 302 installed at the center of the top of the cylinder platform 301, and an upper rod platform 303 installed on the upper end of the piston rod of the hydraulic cylinder 302. A guide column 304 extending downward to the outside of the cylinder platform 301 is installed at the bottom corner of the upper rod platform 303. A lower rod platform 305 is fixed to the lower end of the four guide columns 304. One side of the lower rod platform 305 is fixedly connected to one side of the outer wall of the L-shaped horizontal frame 601. When the lifting assembly 3 is working, the hydraulic cylinder 302 is controlled by the central control box 11. The piston rod of the hydraulic cylinder 302 will drive the upper rod platform 303, guide column 304 and lower rod platform 305 to move down. At this time, each radially adjustable pressure tool 6 fixed to the lower rod platform 305 will also move together until the pressure block 604 is firmly pressed on the flexible circuit board and the support platform 502, so as to prevent the sample from sliding during the test, ensure that the initial mechanical state of each bend is exactly the same, and eliminate the error caused by inconsistent manual clamping force. A servo motor 306 is installed at the top of the lower rod platform 305. The output shaft of the servo motor 306 is fixed to an inner spline shaft 307 via a coupling. The input end of the servo motor 306 is electrically connected to the output end of the central control box 11. An outer spline shaft 308 is fixed at the center of the top of the turntable 4. The upper end of the outer spline shaft 308 extends into the interior of the inner spline shaft 307. After the equipment completes the bending fatigue test, the operator can also start the servo motor 306 through the central control box 11 to work. The servo motor 306 drives the inner spline shaft 307, the outer spline shaft 308 and the turntable 4 to deflect until the sliding support 5 is rotated between two adjacent right-angle vertical arms 2 to facilitate the operator's loading and unloading operations.

[0021] Example 3, based on Example 2, by Figure 10 , Figure 11 , Figure 12 and Figure 13 The cam-type deflector 7 includes a concave base 701 fixed to the top of the base 1, a lifting arm 702 mounted inside the concave base 701 via a hinge shaft, and two L-shaped sheet metal seats 703 fixed to the top of the lifting arm 702. Electric grippers 704 are mounted on the top of the two L-shaped sheet metal seats 703. The input end of the electric grippers 704 is electrically connected to the output end of the central control box 11. Under the control of the central control box 11, the electric grippers 704 clamp the far end of the flexible circuit board. Two L-shaped sheet metal seats 703 are each attached to a main tension spring 709 on their outer walls. The lower end of the main tension spring 709 is attached to the bottom of the concave base 701. Inside the concave base 701 below the lifting arm 702, a vertical shaft 705 is rotatably mounted via a ball bearing. A cylindrical cam 706 is fixed to the top of the vertical shaft 705. A diagonal pull arm 707 is fixed to the bottom of the lifting arm 702. A roller 708 is rotatably mounted on the lower end of the diagonal pull arm 707, which is in contact with the top edge of the cylindrical cam 706. A spoon plate 710 is fixed on both outer walls of the concave base 701, and a protruding pin 711 is fixed on both outer walls of the lifting arm 702. A secondary tension spring 712 is connected between the protruding pin 711 and the spoon plate 710. When the lifting arm 702 rotates around the hinge axis in the concave base 701, the spoon plate 710 is always in a fixed state. The main tension spring 709 and the secondary tension spring 712 provide the downward reset power for the lifting arm 702, the L-shaped sheet metal seat 703, and the electric claw 704. The stepper motor 8 operates according to the direction, speed, angle, and response time set by the central control box 11. The stepper motor 8 then outputs rotational power to the vertical shaft 705 in each cam-type deflector 7 through the gear multi-directional drive group 10. The vertical shaft 705 drives the cylindrical cam 706 to rotate. Since the roller 708 at the lower end of the inclined arm 707 is in contact with the top cam of the cylindrical cam 706, the cylindrical cam 706 will force the inclined arm 707, the lifting arm 702, and the electric chuck 704 to lift by forcing the roller 708. When the roller 708 moves from the high point to the low point of the cylindrical cam 706, the main tension spring 709 and the auxiliary tension spring 712 gradually return to their original stretched state. That is, the main tension spring 709 and the auxiliary tension spring 712 pull the lifting arm 702 and the electric gripper 704 to swing down, thereby realistically simulating the complex bending curve of the flexible circuit board in actual use. The profile of the cylindrical cam 706 can be designed as needed to simulate different bending angles and speed curves; The multi-directional gear drive assembly 10 includes a square steel structure top frame 9 fixed to the top of the bottom shell 1, an outer gear ring 1002 rotatably mounted at the center of the bottom end of the square steel structure top frame 9, and a plurality of driven gear shafts 1001 rotatably mounted at an annular distance from the bottom end of the square steel structure top frame 9 outside the outer gear ring 1002. The driven gear shafts 1001 and the outer gear ring 1002 mesh with each other. A sprocket drive pair 1003 is installed between the upper end of the outer gear ring 1002 and the lower end of the vertical shaft 705. The drive shaft of the stepper motor 8 drives one of the driven gear shafts 1001 to rotate. This driven gear shaft 1001 then drives all the other driven gear shafts 1001 to rotate in the same direction through the external gear ring 1002. The upper end of the driven gear shaft 1001 drives the vertical shaft 705 to rotate through the sprocket transmission pair 1003. As a result, the vertical shaft 705 and the cylindrical cam 706 on all stations rotate in the same phase and at the same speed, so that multiple samples can be fatigue tested at the same frequency and phase. A probe plate 1005 is fixed to the lower end of the vertical shaft 705. A slotted photoelectric counter 1004 is installed on one side of the bottom of the square steel structure top frame 9. The output end of the slotted photoelectric counter 1004 is electrically connected to the input end of the central control box 11. The lower end of one of the vertical shafts 705 will also drive the probe plate 1005 to rotate. By using the cooperation of the slotted photoelectric counter 1004 and the probe plate 1005, the number of rotations of the vertical shaft 705 is measured. The electrical signal of the number of rotations is transmitted to the central control box 11 for cyclic counting.

[0022] In this embodiment, the key bending areas and expected failure points of the flexible circuit board under test are first identified based on the product requirements of the flexible circuit board. This determines the location of the periodic bending interruption point to be simulated in this test. Then, multiple flexible circuit board samples are placed one by one on the equally spaced sliding supports 5 on the turntable 4. Based on the predetermined target bending point position of each sample, the radial coordinates of the sliding supports 5 and the radially adjustable pressure plate 6 are simultaneously adjusted, i.e., the sliding supports 5 and the radially adjustable pressure plate 6 are adjusted in sync with the cam-type deflection actuator 7. The spacing between them; manually and securely install and fix one end of each flexible circuit board onto the corresponding cam-type deflector 7, then start the lifting assembly 3 through the central control box 11. The lifting assembly 3 drives all radially adjustable pressure fixtures 6 to descend synchronously and smoothly, pressing the proximal end of each flexible circuit board and the sliding support 5 below it firmly with uniform and controllable pressure, ensuring that the sample will not slip between the sliding support 5 and the radially adjustable pressure fixture 6 during the test, forming a stable and reliable fixed boundary condition, while one end of the cam-type deflector 7 becomes the application point. The driving force is at the active end; the operator sets the operating frequency of the stepper motor 8 on the human-machine interface of the central control box 11. The speed and working time of the stepper motor 8 are proportional to the bending cycle frequency of the flexible circuit board. The stepper motor 8 decomposes the rotational power through the gear multi-directional drive group 10 and synchronously transmits it to all the cam-type deflection actuators 7 arranged in a ring at equal intervals. The cam-type deflection actuators 7 periodically push the free end of the fixed flexible circuit board, forcing each sample to undergo repetitive, trajectory-controlled flexural deformation around its preset bending break point throughout the entire test run. During the process, staff do not need to operate continuously, but they need to conduct regular visual inspections to observe whether the samples are abnormally loose or have any visible physical failures. When the preset number of cycles is reached or an abnormality is detected and the process is manually stopped, the stepper motor 8 is stopped through the central control box 11, and the lifting assembly 3 is controlled to raise all radially adjustable pressure fixtures 6. Each flexible circuit board sample that has completed the fatigue test is removed from the cam-type deflection actuator 7 and the sliding support 5, and is numbered and marked. Finally, the integrity of the electronic component solder joints, circuits and substrate is evaluated after the specified number of bending fatigue cycles.

[0023] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0024] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A testing device based on electronic components, characterized in that: The device includes a bottom shell (1), a turntable (4) that is rotatably mounted at the center of the top of the bottom shell (1) via a pivot, several right-angled arms (2) that are equidistantly distributed in a ring at the top of the bottom shell (1) on the outside of the turntable (4), and a lifting assembly (3) that is mounted on the top of the several right-angled arms (2). The driving end of the lifting assembly (3) is equipped with a radially adjustable pressure (6) that slides vertically with the right-angled arms (2). A rectangular notch (401) is provided inside the turntable (4) below the radially adjustable pressure (6), and a sliding support (5) is installed in the rectangular notch (401). The top of the bottom shell (1) on one side of the right-angle arm (2) is equipped with a cam-type deflection actuator (7) for cyclically bending the flexible circuit board that limits the movement between the sliding support (5) and the radially adjustable pressure (6). A gear multi-directional drive group (10) is installed on the top of the bottom shell (1), and a stepper motor (8) is installed on one side of the bottom of the bottom shell (1). The output shaft of the stepper motor (8) transmits rotational power synchronously to each cam-type deflection actuator (7) through the gear multi-directional drive group (10). A central control box (11) is installed on one side of the surface of the bottom shell (1). The output end of the central control box (11) is electrically connected to the input end of the lifting assembly (3), the radially adjustable pressure (6), the cam-type deflection actuator (7), and the stepper motor (8). The sliding support (5) includes linear guide rails (501) installed on the left and right walls inside the rectangular notch (401) and a support platform (502) slidably installed between the two linear guide rails (501) by a slider. The upper surface of the support platform (502) is higher than the upper surface of the turntable (4).

2. The testing equipment based on electronic components according to claim 1, characterized in that: The radially adjustable pressure fixture (6) includes an L-shaped horizontal frame (601) that is slidably mounted on the outer wall of the right-angled vertical arm (2) via a track, two support rods (602) fixed on the outer wall of the L-shaped horizontal frame (601) away from the right-angled vertical arm (2), and an end plate (603) that is fixed together on the ends of the two support rods (602). A pressure block (604) is slidably mounted on the two support rods (602). A hydraulic cylinder (605) is mounted on the outer wall of one side of the pressure block (604). The piston rod end of the hydraulic cylinder (605) is fixedly connected to the outer wall of one side of the end plate (603). The input end of the hydraulic cylinder (605) is electrically connected to the output end of the central control box (11). The L-shaped horizontal frame (601) is located directly above the support platform (502).

3. The testing equipment based on electronic components according to claim 2, characterized in that: The lifting assembly (3) includes a cylinder platform (301) fixed on the upper end of several right-angled uprights (2), a hydraulic cylinder (302) installed at the center of the top of the cylinder platform (301), and an upper rod platform (303) installed on the upper end of the piston rod of the hydraulic cylinder (302). A guide column (304) extending downward to the outside of the cylinder platform (301) is installed at the bottom corner of the upper rod platform (303). A lower rod platform (305) is fixed at the lower end of the four guide columns (304). One side of the lower rod platform (305) is fixed to one side of the outer wall of the L-shaped horizontal frame (601).

4. The testing equipment based on electronic components according to claim 3, characterized in that: A servo motor (306) is installed at the top of the lower rod platform (305). The output shaft of the servo motor (306) is fixed to an inner spline shaft (307) via a coupling. The input end of the servo motor (306) is electrically connected to the output end of the central control box (11). An outer spline shaft (308) is fixed at the center of the top of the turntable (4). The upper end of the outer spline shaft (308) extends into the interior of the inner spline shaft (307).

5. The testing equipment based on electronic components according to claim 1, characterized in that: The cam-type deflector actuator (7) includes a concave base (701) fixed to the top of the base shell (1), a lifting arm (702) mounted inside the concave base (701) via a hinge shaft, and two L-shaped sheet metal seats (703) fixed to the top of the lifting arm (702). Electric grippers (704) are mounted on the tops of the two L-shaped sheet metal seats (703). The input end of the electric grippers (704) is electrically connected to the output end of the central control box (11). The outer walls of the two L-shaped sheet metal seats (703) are located on opposite sides. A main tension spring (709) is attached, and the lower end of the main tension spring (709) is attached to the bottom of the concave base (701). A vertical shaft (705) is rotatably mounted inside the concave base (701) below the lifting arm (702) via a ball bearing. A cylindrical cam (706) is fixed at the top of the vertical shaft (705). A diagonal arm (707) is fixed at the bottom of the lifting arm (702), and a roller (708) is rotatably mounted at the lower end of the diagonal arm (707) to maintain contact with the top edge of the cylindrical cam (706).

6. The testing equipment based on electronic components according to claim 5, characterized in that: The concave base (701) has a spoon plate (710) fixed on both outer walls, and the lifting arm (702) has a protruding pin (711) fixed on both outer walls. A secondary tension spring (712) is connected between the protruding pin (711) and the spoon plate (710).

7. A testing device based on electronic components according to claim 6, characterized in that: The gear multi-directional drive assembly (10) includes a square steel structure top frame (9) fixed to the top of the bottom shell (1), an outer gear ring (1002) rotatably mounted at the center of the bottom end of the square steel structure top frame (9), and multiple driven gear shafts (1001) rotatably mounted at an annular distance on the bottom end of the square steel structure top frame (9) outside the outer gear ring (1002). The driven gear shafts (1001) and the outer gear ring (1002) mesh with each other. A sprocket drive pair (1003) is installed between the upper end of the outer gear ring (1002) and the lower end of the vertical shaft (705).

8. The testing equipment based on electronic components according to claim 7, characterized in that: The lower end of the vertical shaft (705) is fixed with a probe plate (1005), and a slotted photoelectric counter (1004) is installed on one side of the bottom of the square steel structure top frame (9). The output end of the slotted photoelectric counter (1004) is electrically connected to the input end of the central control box (11).

9. A testing method based on electronic components, using the testing equipment as described in any one of claims 1-8, characterized in that: Includes the following steps: S101: Place multiple flexible circuit board samples to be tested one by one on each sliding bracket (5). According to the predetermined target bending point position of each sample, synchronously adjust the radial coordinates of the sliding bracket (5) and the radially adjustable pressure (6) to adjust the distance between the sliding bracket (5), the radially adjustable pressure (6) and the cam-type deflection actuator (7). S102: Manually install and fix one end of each flexible circuit board securely on the corresponding cam-type deflection actuator (7), and then start the lifting assembly (3) through the central control box (11). The lifting assembly (3) drives all radially adjustable pressure fixtures (6) to descend synchronously and smoothly, so as to press the near end of each flexible circuit board and the sliding support (5) below it firmly with uniform and controllable pressure. S103: Set the operating frequency of the stepper motor (8) on the human-machine interface of the central control box (11). The speed and working time of the stepper motor (8) are proportional to the bending cycle frequency of the flexible circuit board. The stepper motor (8) decomposes the rotational power through the gear multi-directional drive group (10) and transmits it synchronously to all the cam-type deflection actuators (7) arranged in a ring at equal intervals. The cam-type deflection actuators (7) periodically push the free end of the fixed flexible circuit board, forcing each sample to undergo repetitive, trajectory-controlled flexural deformation around its preset bending interruption point. S104: When the preset number of cycles is reached or an abnormality is detected and the process is manually stopped, the stepper motor (8) is stopped through the central control box (11), and the lifting assembly (3) is controlled to raise all radially adjustable pressure fixtures (6). Each flexible circuit board sample that has completed the fatigue test is removed from the cam-type deflection actuator (7) and the sliding bracket (5), and is numbered and marked. Finally, the integrity status of its electronic component solder joints, circuits and substrate is evaluated after the specified number of bending fatigue cycles.

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