A precision test fixture and method for a flexible separated circuit board

Abstract

The present invention discloses a precision test fixture and method for a flexible partition circuit board, including a bottom plate. A rear shell is installed at the rear end of the top of the bottom plate, and an operating table is installed at the front end of the top of the bottom plate. A first adjusting screw rod is installed inside the operating table, and one end of the first adjusting screw rod is connected to a ball sliding sleeve. Two first pull rods are symmetrically installed on both sides of the ball sliding sleeve, and the ends of the two first pull rods are respectively connected to the bottoms of two sliding plates. In the present invention, the pad table and the pressing block are both made of silicone material. During the detection, the taut flexible circuit board will pass through between the pad table and the pressing block under the action of the first stop rod and the second stop rod. During the detection process, by starting the air cylinder, the pressing block is pushed down to cooperate with the pad table to perform a pressure test on the folded flexible circuit board. The compressive performance of the flexible circuit board can be detected by means of repeated pressure application or continuous pressure application, improving the detection range.

Description

Technical Field

[0001] The present invention relates to the technical field of test fixtures, and in particular to a flexible partition circuit board precision test fixture and method thereof. Background Art

[0002] A fixture is a large category of tools for carpentry, ironworking, fitter work, machinery, electronic control, and other handicrafts. It is mainly a tool for assisting in controlling position or movement. Fixtures can be divided into three categories: process assembly fixtures, project test fixtures, and circuit board test fixtures. When performing precision testing on a flexibly segmented circuit board, a test fixture is required. Referring to the publication number: "CN216526169U", the disclosed "a high-precision multi-contact flexible circuit board test fixture" includes: a fixing plate and a base. One side of the top of the base is fixedly connected with a fixing plate, and the top of one side of the fixing plate is fixedly connected with a mounting plate. This high-precision multi-contact flexible circuit board test fixture solves the problem of being unable to conveniently and stably drive the test mechanism for testing by setting a limiting groove. First, rotate the runner to drive the first trapezoidal gear to rotate. The first trapezoidal gear then drives the first linkage wheel to rotate through the second trapezoidal gear. The first linkage wheel drives the second linkage wheel to rotate through an external drive belt. The second linkage wheel drives the threaded shaft at the bottom to rotate. The threaded shaft drives the test chassis to descend through a threaded sleeve. The limiting sleeve plate on one side of the test chassis limits the test chassis by moving inside the limiting groove to ensure the stability of the test chassis during lifting and lowering. The test chassis drives the probe to descend to test the flexible circuit board at the bottom.

[0003] In the existing flexible circuit board test fixture, the position of the partition circuit board is usually fixed after installation during use. Therefore, before testing, the partition circuit board and the flexible circuit board need to be pre-connected. During the testing process, the circuit boards are in a relatively stable state. When the flexible circuit board is assembled, due to the increasingly small volume of modern electronic products and the preciousness of internal space, for the convenience of installation, the flexible circuit board is usually bent or even folded inside the terminal during assembly and will continuously be in a compressed state. The existing test fixtures cannot simulate the working state under this condition, so there are drawbacks during use. Summary of the Invention

[0004] In view of this, in view of the deficiencies of the existing technology, the main purpose of the present invention is to provide a flexible partition circuit board precision test fixture and method thereof to solve the problem that the position of the circuit board in the existing fixture is relatively fixed during detection, and the detection environment is relatively stable, lacking dynamic adjustment of the detection state as mentioned in the above background.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A precision test fixture and method for a flexible separated circuit board, including a bottom plate. A rear case is installed at the rear end of the top of the bottom plate, and an operating table is installed at the front end of the top of the bottom plate. A first adjusting screw rod is installed inside the operating table, and one end of the first adjusting screw rod is connected to a ball slide sleeve. Two first pull rods are symmetrically installed on both sides of the ball slide sleeve respectively, and the ends of the two first pull rods are respectively connected to the bottoms of two sliding plates.

[0007] Further, the two sliding plates are respectively installed on both sides of the top of the operating table, and a circuit board support plate is installed on the top of each sliding plate. A second pull rod is installed at the rear end of the bottom of each sliding plate, and a slider is installed at the end of each second pull rod.

[0008] Further, the bottom of the ball slide sleeve is connected to one end of a connecting rod, and the other end of the connecting rod penetrates through the bottom of the rear side of the operating table and is connected to a movable frame. A first sliding sleeve and a second sliding sleeve are respectively installed at both ends of the movable frame, and the first sliding sleeve and the second sliding sleeve are respectively arranged on both sides of a cushion table. Meanwhile, the cushion table is installed at the rear end of the top of the operating table.

[0009] Further, a pressing block is arranged above the operating table, and the pressing block is installed at the bottom of a first pressing plate. Meanwhile, the top end of the first pressing plate is connected to a second pressing plate. The two ends of the first pressing plate and the second pressing plate are respectively connected to two second sliding rods, and the two second sliding rods are respectively installed at both ends of the top of the operating table. Meanwhile, the top ends of the two second sliding rods are connected to the inner wall of the top of the rear case.

[0010] Further, a cylinder is installed at the top end of the rear case, and the extending end of the cylinder penetrates through the top of the rear case and is connected to the top of the second pressing plate. Two second return springs are respectively installed between the two ends of the first pressing plate and the second pressing plate, and the two second return springs are respectively wrapped outside the two second sliding rods.

[0011] Further, a second stop rod is installed on the side of the second sliding sleeve close to the cushion table, and the end of the second stop rod is fitted and connected to the end of the first stop rod. Meanwhile, the length of the second stop rod is greater than the length of the first stop rod.

[0012] Further, two second adjusting screw rods are respectively installed on both sides of the movable frame, and the two second adjusting screw rods are respectively in threaded connection with the first sliding sleeve and the second sliding sleeve.

[0013] Further, a first stop rod is installed on the side of the first sliding sleeve close to the cushion table. The connection mode of the first stop rod and the first sliding sleeve is a rotational connection. Meanwhile, a spring piece is installed at the connection part of the first stop rod and the first sliding sleeve. The first stop rod and the spring piece form a rotational structure.

[0014] Further, two wiring boards are respectively installed at both ends of the front side of the rear shell, two tool fixing seats are respectively arranged in front of the two wiring boards, and the two tool fixing seats are respectively installed at both ends of the top of the bottom plate;

[0015] Further, a motor is installed at the rear side of the operating table, the output shaft of the motor is connected to one end of the first adjusting screw rod, and the connection mode between the first adjusting screw rod and the ball sliding sleeve is a threaded connection;

[0016] Further, the connection mode between the sliding plate and the operating table is a sliding connection, the connection mode between the sliding plate and the first pull rod is a rotational connection, and the connection mode between the first pull rod and the ball sliding sleeve is a rotational connection;

[0017] Further, the sliding plate, the ball sliding sleeve, the first pull rod and the first adjusting screw rod form a sliding structure;

[0018] Further, the circuit board support plate includes flying wire limiting columns and pin slots; several groups of flying wire limiting columns are provided, and two flying wire limiting columns are symmetrically provided in each group;

[0019] Further, the circuit board support plate is connected to the sliding plate by bolts;

[0020] Further, the connection mode between the second pull rod and the sliding plate is a rotational connection, and the connection mode between the second pull rod and the slider is a rotational connection; the sliding plate, the second pull rod and the slider form a rotational structure;

[0021] Further, each slider is respectively slidably connected to a first sliding rod, the two first sliding rods are respectively installed inside two inner slots, and the two inner slots are respectively opened on the inner walls of both sides of the operating table;

[0022] Further, a first return spring is wrapped on the outer wall of each first sliding rod, and the first return spring, the first sliding rod and the slider form a telescopic structure;

[0023] Further, the connection mode between the first pressing plate and the second pressing plate is a sliding connection, and the first pressing plate, the second return spring and the second pressing plate form a telescopic structure;

[0024] Further, the connection modes between the first pressing plate and the second pressing plate and the second sliding rod are both sliding connections, and the first pressing plate, the pressing block, the second pressing plate and the air cylinder form a lifting structure.

[0025] Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solutions:

[0026] 1. In the present invention, a slide plate and a circuit board support plate are provided, and the slide plate and the circuit board support plate are installed in a split manner and are connected by screw reinforcement. The circuit board support plate can be customized according to the shape of the circuit board to be tested, so as to facilitate replacement. The pin groove on the top of the circuit board support plate can be used to accommodate the pins on the bottom of the circuit board, and the flying wire limit column can clamp and fix the position of the flying wire used for connection, and by starting the motor, the first adjusting screw rod is driven to rotate, and then the ball sleeve is driven to move along the first adjusting screw rod, which can drive the two slide plates to move closer or farther from each other, and then adjust the distance between the two circuit board support plates, thereby improving the convenience of use and the scope of application.

[0027] 2. In the present invention, a connecting rod, a movable frame, a first sliding sleeve, a first baffle, a second sliding sleeve and a second baffle are provided. When two separated circuit boards are connected to each other through a flexible circuit board, the bent flexible circuit board can be pulled closer through the first baffle and the second baffle to keep it in a relatively tight state, so as to simulate the state of the flexible circuit board inside the device. When the movement of the ball sleeve is adjusted, the ball sleeve will drive the movable frame to move synchronously through the connecting rod to dynamically compensate for the effective length of the flexible circuit board after folding when the two circuit board support plates are close to each other. By rotating the second adjusting screw, the positions of the first baffle and the second baffle can be manually adjusted at the same time, so as to facilitate fine-tuning according to the length of the flexible circuit board to be tested, thereby improving practicality.

[0028] 3. In the present invention, a pad and a pressure block are provided, both of which are made of silicone. When testing, the taut flexible circuit board will pass through between the pad and the pressure block under the action of the first baffle rod and the second baffle rod. During the testing process, the cylinder is started to push the pressure block down to cooperate with the pad to perform pressure testing on the folded flexible circuit board. The compressive resistance of the flexible circuit board can be tested by repeated or continuous pressure application, thereby increasing the testing range.

[0029] In order to more clearly illustrate the structural features and effects of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0031] Figure 2 The present invention Figure 1 Side view of

[0032] Figure 3 is a plan elevation view of the present invention;

[0033] Figure 4 is a plan view of the present invention;

[0034] Figure 5 It is a schematic three-dimensional structure diagram of the operating platform in the present invention;

[0035] Figure 6 is the present invention Figure 5 rear view;

[0036] Figure 7 is the present invention Figure 5 bottom view;

[0037] Figure 8 is the present invention Figure 6 side view;

[0038] Figure 9 is the present invention Figure 8 bottom view;

[0039] Figure 10 is the present invention Figure 1 enlarged view of part A in the present invention;

[0040] Figure 11 is the present invention Figure 7 enlarged view of part B in the present invention;

[0041] Figure 12 is the present invention Figure 8 enlarged view of part C in the present invention.

[0042] The reference numerals are as follows:

[0043] 1, bottom plate, 2 - rear shell, 3 - operating platform, 4 - first adjusting screw rod, 5 - motor, 6 - ball slide sleeve, 7 - first pull rod, 8 - slide plate, 9 - circuit board support plate, 901 - flying wire limiting post, 902 - pin slot, 10 - second pull rod, 11 - slider, 12 - first sliding rod, 13 - inner groove, 14 - first return spring, 15 - connecting rod, 16 - movable frame, 17 - first sliding sleeve, 18 - second adjusting screw rod, 19 - spring piece, 20 - first stop rod, 21 - second sliding sleeve, 22 - second stop rod, 23 - cushion table, 24 - second sliding rod, 25 - first pressing plate, 26 - pressing block, 27 - second pressing plate, 28 - second return spring, 29 - air cylinder, 30 - wiring board, 31 - tool fixing seat. Detailed implementation manners

[0044] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0045] To enable those skilled in the art to better understand the solution of this application, the following will clearly and completely describe the technical solution in the embodiments of this application with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without making creative efforts shall fall within the scope of protection of this application.

[0046] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 and Figure 12As shown in the figure, it includes a bottom plate 1. A rear shell 2 is installed at the rear end of the top of the bottom plate 1, and an operating platform 3 is installed at the front end of the top of the bottom plate 1. A first adjusting screw rod 4 is installed inside the operating platform 3, and one end of the first adjusting screw rod 4 is connected to a ball slide sleeve 6. Two first pull rods 7 are symmetrically installed on both sides of the ball slide sleeve 6 respectively, and the ends of the two first pull rods 7 are respectively connected to the bottoms of two sliding plates 8. The two sliding plates 8 are respectively installed on both sides of the top of the operating platform 3, and a circuit board support plate 9 is installed on the top of each sliding plate 8. A second pull rod 10 is installed at the rear end of the bottom of each sliding plate 8, and a slider 11 is installed at the end of each second pull rod 10 respectively. The bottom of the ball slide sleeve 6 is connected to one end of a connecting rod 15, and the other end of the connecting rod 15 passes through the bottom of the rear side of the operating platform 3 and is connected to a movable frame 16. A first sliding sleeve 17 and a second sliding sleeve 21 are respectively installed at both ends of the movable frame 16, and the first sliding sleeve 17 and the second sliding sleeve 21 are respectively arranged on both sides of a cushion table 23. At the same time, the cushion table 23 is installed at the rear end of the top of the operating platform 3. A pressing block 26 is arranged above the operating platform 3, and the pressing block 26 is installed at the bottom of a first pressing plate 25. At the same time, the top end of the first pressing plate 25 is connected to a second pressing plate 27. The two ends of the first pressing plate 25 and the second pressing plate 27 are respectively connected to two second sliding rods 24, and the two second sliding rods 24 are respectively installed at both ends of the top of the operating platform 3. At the same time, the top ends of the two second sliding rods 24 are connected to the inner wall of the top of the rear shell 2. A cylinder 29 is installed at the top end of the rear shell 2, and the extending end of the cylinder 29 passes through the top of the rear shell 2 and is connected to the top of the second pressing plate 27. Two second return springs 28 are respectively installed between the two ends of the first pressing plate 25 and the second pressing plate 27, and the two second return springs 28 are respectively wrapped outside the two second sliding rods 24. A second stop rod 22 is installed on the side of the second sliding sleeve 21 close to the cushion table 23, and the end of the second stop rod 22 is fitted and connected to the end of a first stop rod 20. At the same time, the length of the second stop rod 22 is greater than the length of the first stop rod 20. Two second adjusting screw rods 18 are respectively installed on both sides of the movable frame 16, and the two second adjusting screw rods 18 are respectively threadedly connected to the first sliding sleeve 17 and the second sliding sleeve 21. A first stop rod 20 is installed on the side of the first sliding sleeve 17 close to the cushion table 23, and the connection mode of the first stop rod 20 and the first sliding sleeve 17 is a rotational connection. At the same time, a spring piece 19 is installed at the connection part of the first stop rod 20 and the first sliding sleeve 17. The first stop rod 20 and the spring piece 19 cooperate to form a rotational structure.

[0047] Specifically, since the folded flexible circuit board has its bent portion usually in a relatively central position, when stretching the flexible circuit board, the bent portion usually adheres to the relatively long second stop lever 22, and the position of the second stop lever 22 is fixed to ensure that sufficient pulling force can be applied to the second stop lever 22 to keep it in a relatively taut state; the rotatable first stop lever 20 can disassemble and assemble the folded flexible circuit board before and after the detection is completed, improving the convenience of use.

[0048] As a further illustration of this embodiment, by rotating the second adjusting screw rod 18, the corresponding first sliding sleeve 17 or second sliding sleeve 21 can be adjusted to slide along both ends of the movable frame 16, thereby adjusting the positions of the first stop lever 20 and the second stop lever 22; under the action of the spring piece 19, the first stop lever 20 can rotate slightly and self-return to the initial position.

[0049] Please refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown in the figures, in this embodiment, two wiring boards 30 are respectively installed at both front ends of the rear shell 2, and two tool fixing seats 31 are respectively provided in front of the two wiring boards 30. At the same time, the two tool fixing seats 31 are respectively installed at both top ends of the bottom plate 1.

[0050] Specifically, the wiring board 30 is provided with power connectors of various different specifications, facilitating the connection of a variety of test tools and improving the convenience of use.

[0051] As a further illustration of this embodiment, the top of the tool fixing seat 31 is provided with a plurality of grooves for temporarily placing test tools.

[0052] Please refer to Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 and Figure 9 As shown in the figures, in this embodiment, a motor 5 is installed at the rear side of the operating table 3, and the output shaft of the motor 5 is connected to one end of the first adjusting screw rod 4. At the same time, the connection mode between the first adjusting screw rod 4 and the ball sliding sleeve 6 is a threaded connection; the connection mode between the sliding plate 8 and the operating table 3 is a sliding connection, and the connection mode between the sliding plate 8 and the first pull rod 7 is a rotational connection. At the same time, the connection mode between the first pull rod 7 and the ball sliding sleeve 6 is a rotational connection; the sliding plate 8, the ball sliding sleeve 6, the first pull rod 7 and the first adjusting screw rod 4 cooperate to form a sliding structure.

[0053] Specifically, by driving the first adjusting screw rod 4 to rotate by the motor 5, the ball sliding sleeve 6 is driven to move linearly along the first adjusting screw rod 4.

[0054] As a further illustration of this embodiment, while the ball bushing 6 is moving, it drives the first pull rod 7 to move synchronously, and further drives the slide plate 8 connected to the first pull rod 7 to slide relatively on the top of the operation table 3 synchronously.

[0055] Please refer to Figure 5 、 Figure 6 and Figure 10 As shown, in this embodiment, the circuit board carrier 9 includes flying wire limiting posts 901 and pin slots 902; there are several groups of the flying wire limiting posts 901, and two flying wire limiting posts 901 in each group are symmetrically arranged; the circuit board carrier 9 is connected to the slide plate 8 by bolts.

[0056] Specifically, the way of bolt connection facilitates disassembly and replacement of circuit board carriers 9 of different specifications.

[0057] As a further illustration of this embodiment, the flying wires to be used are clamped and fixed through the pin slots 902, and the pin slots 902 with concave inner surfaces accommodate and separate the pins at the bottom of the main board, ensuring that the separated main board remains stable when placed on the top of the circuit board carrier 9.

[0058] Please refer to Figure 8 、 Figure 9 and Figure 11 As shown, in this embodiment, the connection mode between the second pull rod 10 and the slide plate 8 is a rotational connection, and the connection mode between the second pull rod 10 and the slider 11 is also a rotational connection; the slide plate 8, the second pull rod 10 and the slider 11 form a rotational structure; each slider 11 is respectively slidably connected to a first slide rod 12, and the two first slide rods 12 are respectively installed inside the two inner slots 13, and at the same time, the two inner slots 13 are respectively opened on the inner walls of both sides of the operation table 3; a first return spring 14 is wrapped on the outer wall of each first slide rod 12, and the first return spring 14, the first slide rod 12 and the slider 11 form a telescopic structure.

[0059] Specifically, in the initial state, the distance between the two slide plates 8 is kept maximum, at this time the slider 11 is at the front end of the inner slot 13, and at this time the first return spring 14 is in a stretched state.

[0060] As a further illustration of this embodiment, when the two slide plates 8 approach each other, the slide plate 8 synchronously pulls the second pull rod 10. While the second pull rod 10 drives the slider 11 to slide along the first slide rod 12, the first return spring 14 starts to contract, and then gives the slider 11 a pulling force in the same direction as the sliding direction, and further cooperates with the second pull rod 10 to give the slide plate 8 a pushing force in the same direction as the sliding direction, so as to balance the forces at the front and rear ends of the slide plate 8 during sliding and ensure the stability of the slide plate 8 when it is closed.

[0061] Please refer to Figure 1, Figure 2 , Figure 3 and Figure 4 As shown in Figure 2 , Figure 3 , and Figure 4 , the first pressing plate 25 and the second pressing plate 27 are connected in a sliding manner, and the first pressing plate 25, the second return spring 28, and the second pressing plate 27 form a telescopic structure; the first pressing plate 25 and the second pressing plate 27 are both connected to the second sliding rod 24 in a sliding manner, and the first pressing plate 25, the pressing block 26, the second pressing plate 27, and the air cylinder 29 form a lifting structure.

[0062] Specifically, both the pressing block 26 and the cushion table 23 are made of silica gel material and have a certain elasticity themselves to avoid excessive squeezing damage to the clamped flexible circuit board.

[0063] As a further explanation of this embodiment, before the second return spring 28 between the first pressing plate 25 and the second pressing plate 27 is fully contracted, it will apply a continuous and stable pressure to the first pressing plate 25 to avoid applying excessive pressure to the flexible circuit board clamped between the pressing block 26 and the cushion table 23.

[0064] The working principle of the present invention:

[0065] Step 1: First, select a circuit board tray 9 with a corresponding-shaped pin slot 902 according to the model of the partitioned circuit board to be detected, and fixedly install the circuit board tray 9 on the top of the sliding plate 8 through screws. Subsequently, place the partitioned circuit boards to be detected on the top of the two circuit board trays 9 respectively, so that the pins exposed at the bottom of the partitioned circuit boards are located in the corresponding pin slots 902. When there is a need to connect a flying wire, the flying wire can be embedded between a corresponding group of flying wire limiting posts 901, and the position of the flying wire is fixed by the flying wire limiting posts 901;

[0066] Step 2: After bending and folding the flexible circuit board to be detected, connect the two ends of the flexible circuit board to the connectors of the two partitioned circuit boards respectively. Subsequently, pull the first lever 20 to make the first lever 20 flip forward and start stretching the spring piece 19. At this time, a gap appears between the first lever 20 and the second lever 22. Then, pass the bend of the flexible circuit board through this gap and sleeve it on the second lever 22, and release the first lever 20 to make it return to its initial position under the elastic return of the spring piece 19;

[0067] Step 3: At the same time, rotate the two second adjusting lead screws 18 to drive the first sliding sleeve 17 and the second sliding sleeve 21 to slide backward at both ends of the movable frame 16 respectively, thereby simultaneously adjusting the positions of the first sliding sleeve 17 and the second sliding sleeve 21 until the second lever 22 pulls the folded flexible circuit board to a nearly straight state, and at this time, the folding part of the flexible circuit board is between the cushion table 23 and the pressing block 26;

[0068] Step 4: Connect the external power supply, start the motor 5, drive the first adjusting lead screw 4 to start rotating, drive the ball bushing 6 to start moving backward, synchronously drive the ends of the two first pull rods 7 to approach each other, and then pull the two slide plates 8 to slide close to each other. While the two slide plates 8 are sliding, they start to drive the two second pull rods 10 to start rotating simultaneously. Synchronously, the slider 11 connected to the end of the second pull rod 10 starts to slide along the first slide rod 12, and the first return spring 14 wrapped around the first slide rod 12 gives the slider 11 a pulling force in the same direction as the sliding direction when rebounding, so as to cooperate with the second pull rod 10 to give the slide plate 8 a pushing force in the same direction as the sliding direction, ensuring that both ends of the slide plate 8 remain balanced during sliding; by adjusting the distance between the two slide plates 8, adjust the distance between the two partition circuit boards to be detected, so that their positions are more in line with the distance within the actual product installation space, and then connect the partition circuit board to the external power supply for detection through tools in cooperation with the wiring board 30;

[0069] Step 5: While the ball bushing 6 moves backward, drive the connecting rod 15 to move backward synchronously and start pushing the corresponding movable frame 16. While the movable frame 16 moves backward, it will drive the first stop lever 20 and the second stop lever 22 to move backward synchronously, and then pull the folded flexible circuit board to move backward synchronously. Since the two ends of the flexible circuit board approach each other when the two partition circuit boards approach each other, the overall length of the folded part is extended. By pulling the folded part of the flexible circuit by the first stop lever 20 and the second stop lever 22 that move backward synchronously, it is always kept in a state tending to be straight, so as to simulate the state when inside the terminal product;

[0070] Step 6: Start the cylinder 29, push the second pressing plate 27 to slide down along the two second slide rods 24 simultaneously, synchronously drive the first pressing plate 25 and the pressing block 26 to press down simultaneously, and press the folded flexible circuit board through the cooperation of the pressing block 26 and the pad table 23. By repeatedly pressing, detect the connection state of the flexible circuit board in this state;

[0071] Step 7: After the detection is completed, by pulling the first stop lever 20, make the first stop lever 20 flip forward and start stretching the spring piece 19. At this time, there is a gap between the first stop lever 20 and the second stop lever 22, and the folded part of the flexible circuit board is separated from the second stop lever 22 through the gap, and the detected partition circuit board can be removed from the top of the circuit board tray 9.

[0072] The above is only a preferred embodiment of the present invention, and does not impose any limitation on the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A flexible partition circuit board precision test fixture, characterized in that: It includes a bottom plate (1), a rear shell (2) is installed at the rear end of the top of the bottom plate (1), and an operating table (3) is installed at the front end of the top of the bottom plate (1); a first adjusting screw rod (4) is installed inside the operating table (3), and one end of the first adjusting screw rod (4) is connected to a ball slide sleeve (6); two first pull rods (7) are symmetrically installed on both sides of the ball slide sleeve (6) respectively, and the ends of the two first pull rods (7) are respectively connected to the bottoms of two sliding plates (8). The two sliding plates (8) are respectively installed on both sides of the top of the operating table (3), and a circuit board support plate (9) is installed on the top of each sliding plate (8); a second pull rod (10) is installed at the rear end of the bottom of each sliding plate (8), and a slider (11) is installed at the end of each second pull rod (10). The bottom of the ball slide sleeve (6) is connected to one end of a connecting rod (15), and the other end of the connecting rod (15) passes through the bottom of the rear side of the operating table (3) and is connected to a movable frame (16); a first sliding sleeve (17) and a second sliding sleeve (21) are respectively installed at both ends of the movable frame (16), and the first sliding sleeve (17) and the second sliding sleeve (21) are respectively arranged on both sides of a cushion table (23), and at the same time the cushion table (23) is installed at the rear end of the top of the operating table (3). Above the operating table (3) is provided with a pressing block (26), and the pressing block (26) is installed at the bottom of a first pressing plate (25), and at the same time the top end of the first pressing plate (25) is connected to a second pressing plate (27); the two ends of the first pressing plate (25) and the second pressing plate (27) are respectively connected to two second sliding rods (24), and the two second sliding rods (24) are respectively installed at both ends of the top of the operating table (3), and at the same time the top ends of the two second sliding rods (24) are connected to the inner wall of the top of the rear shell (2). A cylinder (29) is installed at the top end of the rear shell (2), and the extending end of the cylinder (29) passes through the top of the rear shell (2) and is connected to the top of the second pressing plate (27); two second return springs (28) are respectively installed between the two ends of the first pressing plate (25) and the second pressing plate (27), and the two second return springs (28) are respectively wrapped outside the two second sliding rods (24). A second stop rod (22) is installed on the side of the second sliding sleeve (21) close to the cushion table (23), and the end of the second stop rod (22) is fitted and connected to the end of the first stop rod (20), and at the same time the length of the second stop rod (22) is greater than the length of the first stop rod (20). Two second adjusting screw rods (18) are respectively installed on both sides of the movable frame (16), and the two second adjusting screw rods (18) are respectively threadedly connected to the first sliding sleeve (17) and the second sliding sleeve (21). One side of the first sliding sleeve (17) close to the cushion table (23) is provided with a first stop bar (20), and the connection mode between the first stop bar (20) and the first sliding sleeve (17) is a rotational connection. Meanwhile, a spring piece (19) is installed at the connection part between the first stop bar (20) and the first sliding sleeve (17); the first stop bar (20) and the spring piece (19) cooperate to form a rotational structure.

2. The flexible partition circuit board precision test fixture according to claim 1, wherein: At both front ends of the rear shell (2), two wiring boards (30) are respectively installed, and in front of the two wiring boards (30), two tool fixing seats (31) are respectively provided. Meanwhile, the two tool fixing seats (31) are respectively installed at both top ends of the bottom plate (1).

3. The flexible partition circuit board precision test fixture according to claim 1, wherein: A motor (5) is installed at the rear side of the operation table (3), and the output shaft of the motor (5) is connected to one end of the first adjusting lead screw (4). Meanwhile, the connection mode between the first adjusting lead screw (4) and the ball sliding sleeve (6) is a threaded connection; The connection mode between the sliding plate (8) and the operation table (3) is a sliding connection, the connection mode between the sliding plate (8) and the first pull rod (7) is a rotational connection, and the connection mode between the first pull rod (7) and the ball sliding sleeve (6) is a rotational connection; The sliding plate (8), the ball sliding sleeve (6), the first pull rod (7) and the first adjusting lead screw (4) cooperate to form a sliding structure.

4. The flexible partition circuit board precision test fixture according to claim 1, characterized in that: The circuit board support plate (9) includes flying wire limiting posts (901) and pin slots (902); several groups of flying wire limiting posts (901) are provided, and two flying wire limiting posts (901) are symmetrically provided in each group; The circuit board support plate (9) is connected to the sliding plate (8) by bolts.

5. The flexible partition circuit board precision test fixture according to claim 1, characterized in that: The connection mode between the second pull rod (10) and the sliding plate (8) is a rotational connection, and the connection mode between the second pull rod (10) and the slider (11) is a rotational connection; the sliding plate (8), the second pull rod (10) and the slider (11) form a rotational structure; Each slider (11) is respectively slidably connected to a first sliding rod (12), and the two first sliding rods (12) are respectively installed inside two inner slots (13). Meanwhile, the two inner slots (13) are respectively opened on the inner walls of both sides of the operation table (3); A first return spring (14) is wrapped on the outer wall of each first sliding rod (12), and the first return spring (14), the first sliding rod (12) and the slider (11) form a telescopic structure.

6. The flexible partition circuit board precision test fixture according to claim 1, wherein: The connection mode between the first pressing plate (25) and the second pressing plate (27) is a sliding connection, and the first pressing plate (25), the second return spring (28) and the second pressing plate (27) form a telescopic structure; The connection modes between the first pressing plate (25) and the second pressing plate (27) and the second sliding rod (24) are both sliding connections, and the first pressing plate (25), the pressing block (26), the second pressing plate (27) and the air cylinder (29) form a lifting structure.

7. According to the usage method of the flexible partition circuit board precision test fixture described in claim 1, it is characterized in that: Step 1: First, select a circuit board pallet (9) with a corresponding-shaped pin slot (902) according to the model of the separated circuit board to be detected, and fixedly install the circuit board pallet (9) on the top of the sliding plate (8) with screws. Subsequently, place the separated circuit boards to be detected on the top of the two circuit board pallets (9) respectively, so that the pins exposed at the bottom of the separated circuit boards are located in the corresponding pin slots (902). When there are jumper wires that need to be connected, the jumper wires can be embedded between a corresponding set of jumper wire limiting posts (901), and the positions of the jumper wires are fixed by the jumper wire limiting posts (901). Step 2: After bending and folding the flexible circuit board to be detected, connect the two ends of the flexible circuit board to the connectors of the two separated circuit boards respectively. Subsequently, pull the first lever (20) to make the first lever (20) flip forward and start stretching the spring piece (19). At this time, a gap appears between the first lever (20) and the second lever (22). Then, place the bend of the flexible circuit board through this gap and sleeve it on the second lever (22), and release the first lever (20) to make it return to its initial position under the elastic return of the spring piece (19). Step 3: Rotate the two second adjusting screws (18) simultaneously to drive the first sliding sleeve (17) and the second sliding sleeve (21) to slide backward at both ends of the movable frame (16) respectively, thereby adjusting the positions of the first sliding sleeve (17) and the second sliding sleeve (21) simultaneously until the second lever (22) pulls the folded flexible circuit board to a nearly straight state, and at this time, the folded part of the flexible circuit board is located between the cushion table (23) and the pressing block (26). Step 4: Connect the external power supply and start the motor (5) to drive the first adjusting screw (4) to start rotating, drive the ball screw sleeve (6) to start moving backward, synchronously drive the ends of the two first pull rods (7) to approach each other, and then pull the two sliding plates (8) to slide closer to each other. While the two sliding plates (8) are sliding, they start to drive the two second pull rods (10) to start rotating simultaneously. Synchronously, the slider (11) connected to the end of the second pull rod (10) starts to slide along the first sliding rod (12), and the first return spring (14) wrapped around the first sliding rod (12) gives the slider (11) a pulling force in the same direction as the sliding direction when it rebounds, so as to cooperate with the second pull rod (10) to give the sliding plate (8) a pushing force in the same direction as the sliding direction to ensure that the front and rear ends of the sliding plate (8) remain balanced during sliding; by adjusting the distance between the two sliding plates (8), adjust the distance between the two separated circuit boards to be detected to make their positions more in line with the distance in the actual product installation space. Subsequently, use tools to cooperate with the wiring board (30) to connect the separated circuit boards to the external power supply for detection. Step 5: While the ball bushing (6) moves backward, it drives the connecting rod (15) to move backward synchronously and starts to push the corresponding movable frame (16). While the movable frame (16) moves backward, it drives the first stop lever (20) and the second stop lever (22) to move backward synchronously, thereby pulling the folded flexible circuit board to move backward synchronously. Since the two separated circuit boards approach each other, the two ends of the flexible circuit board also approach each other, making the overall length of the folded part extend. The first stop lever (20) and the second stop lever (22) that move backward synchronously pull the folded part of the flexible circuit, making it always tend to be in a straight state to simulate the state inside the terminal product; Step 6: Start the cylinder (29) to push the second pressing plate (27) to slide down along the two second slide rods (24) simultaneously, synchronously driving the first pressing plate (25) and the pressing block (26) to press down synchronously. The pressing block (26) cooperates with the cushion table (23) to press on the folded flexible circuit board. Through repeated pressing, the connection state of the flexible circuit board in this state is detected; Step 7: After the detection is completed, by pulling the first stop lever (20), the first stop lever (20) is flipped forward and starts to stretch the spring piece (19). At this time, a gap appears between the first stop lever (20) and the second stop lever (22). The folded part of the flexible circuit board is separated from the second stop lever (22) through the gap, and the separated circuit board after the detection is removed from the top of the circuit board pallet (9).

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