FPC circuit board testing device

Abstract

The utility model belongs to the technical field of FPC circuit board testing, and particularly relates to an FPC circuit board testing device which comprises a base, a jig is fixedly installed on the base, a lifting plate is arranged in the jig in a sliding mode, two sets of fixing plates are symmetrically welded on the top side of the lifting plate, two sets of first springs are symmetrically welded on the base, and the two sets of first springs are symmetrically welded on the base. The top side of the first spring is connected with the fixing plate, two sets of sliding grooves are symmetrically formed in the positions, located on the two sides of the jig, of the base, sliding blocks are assembled in the sliding grooves, limiting blocks are welded to the sliding blocks, the limiting blocks are of an L-shaped structure, the two sets of limiting blocks are pushed to slide towards the two sides of the jig, and at the moment, the two sets of limiting blocks do not limit the fixing plate any more; and under the upward thrust of the first springs, the two sets of fixing plates move vertically upwards, the two sets of fixing plates drive the lifting plate in the jig to move vertically upwards, the lifting plate drives the FPC to move vertically upwards, rapid taking of the FPC from the jig is achieved, and the taking efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of FPC circuit board testing, in particular to an FPC circuit board testing device. Background Art

[0002] Flexible circuit boards are made of polyimide or polyester film as a substrate and are highly reliable and extremely flexible printed circuit boards. They have the characteristics of high wiring density, light weight, thin thickness, and good bendability. FPC circuit boards must be tested after production before they can be shipped, so testing equipment is required.

[0003] A Chinese patent with publication number CN216848028U discloses an FPC circuit board testing device, including a device base and a vertical support seat, a supporting fixture is arranged on the device base, a supporting recess is opened on the supporting fixture, a lifting guide seat is arranged on the side of the vertical support seat, the upper part of the lifting guide seat is provided with a hinge seat, the lower part of the lifting guide seat is provided with a guide bearing seat, a linear bearing is arranged on the guide bearing seat, a lifting drive shaft is arranged in the linear bearing, a lifting mounting plate is arranged at the lower end of the lifting drive shaft, a probe mounting seat is installed at the bottom of the lifting mounting plate, a plurality of detection probes are arranged on the probe mounting seat, the detection probe is a retractable elastic probe, a swing plate is hinged on the hinge seat, a swing rod is arranged at the free end of the swing plate, and a connecting rod is arranged between the middle position of the swing plate and the upper part of the lifting drive shaft. This kind of FPC circuit board testing device has the characteristics of simple structure and convenient operation, and can effectively prevent the technical defects of the probe not being able to contact in place and the probe piercing the FPC product when used.

[0004] In the process of testing the FPC circuit board, the existing testing device uses a fixture to position the FPC circuit board. Since the FPC circuit board is low in strength and easy to bend, the FPC circuit board cannot be quickly removed, resulting in low material removal efficiency. Therefore, an FPC circuit board testing device is proposed to address the above problems. Utility Model Content

[0005] In order to make up for the deficiencies of the prior art and solve the problems existing in the prior art, the utility model provides an FPC circuit board testing device.

[0006] The technical solution adopted by the utility model to solve its technical problems is: an FPC circuit board testing device described in the utility model comprises a base, a fixture is fixedly installed on the base, a lifting plate is slidably arranged inside the fixture, two groups of fixed plates are symmetrically welded on the top side of the lifting plate, two groups of first springs are symmetrically welded on the base, the top side of the first spring is connected to the fixed plate, two groups of slide grooves are symmetrically opened on the base on both sides of the fixture, a slider is installed inside the slide groove, a limiting block is welded on the slider, the limiting block is an L-shaped structure, a support plate is installed on the base, a hydraulic cylinder is fixedly installed on the top plate of the support plate, and the A hydraulic rod is connected to the bottom end of the hydraulic cylinder, and the hydraulic rod passes through the top plate of the support plate and a mounting box is welded on the bottom side. A round hole is opened on the bottom plate of the mounting box, and a probe passes through the round hole. The probe is located above the jig, and by pushing the two groups of limit blocks to slide to both sides of the jig, the sliders on the bottom sides of the limit blocks slide stably in the slide grooves. At this time, the two groups of limit blocks no longer limit the fixed plates. Under the upward thrust of the first spring, the two groups of fixed plates move vertically upward, and the two groups of fixed plates drive the lifting plates in the jig to move vertically upward, and the lifting plates drive the FPC circuit board to move vertically upward, thereby realizing rapid material removal of the FPC circuit board from the jig, which is beneficial to improving the material removal efficiency.

[0007] Preferably, a connecting wire is connected to the top side of the probe, a movable plate is fixedly installed on the periphery of the probe, the movable plate is assembled in the installation box, the movable plate slides with the installation box, a mounting plate is fixedly welded on the inner wall of the installation box, the mounting plate is sleeved on the periphery of the connecting wire, a second spring is installed between the movable plate and the mounting plate, the second spring is sleeved on the periphery of the connecting wire, the connecting wire passes through the side wall of the installation box and the other end is connected to the display screen, a support frame is installed on the bottom side of the display screen, the support frame is connected to the base, by placing the FPC circuit board in the fixture, the hydraulic cylinder is operated, the hydraulic rod moves vertically downward, the hydraulic rod drives the installation box to move vertically downward, the installation box drives the probe to move vertically downward until the probe contacts the FPC circuit board, after the probe contacts the FPC circuit board, a part of the probe is pushed back into the installation box, the probe drives the movable plate to move vertically upward in the installation box, the movable plate compresses the second spring, under the pressure of the second spring, the probe and the FPC circuit board are in contact, the adjustment of the pressing force of the probe is realized, the large force of the probe is avoided to cause damage to the PC circuit board, the protection of the PC circuit board is realized, and it is beneficial to improve the protection.

[0008] The utility model is beneficial in that:

[0009] 1. The utility model pushes the two groups of limit blocks to slide to both sides of the fixture, and the sliders on the bottom sides of the limit blocks slide stably in the slide grooves. At this time, the two groups of limit blocks no longer limit the fixed plates. Under the upward thrust of the first spring, the two groups of fixed plates move vertically upward, and the two groups of fixed plates drive the lifting plates in the fixture to move vertically upward, and the lifting plates drive the FPC circuit board to move vertically upward, thereby realizing the rapid retrieval of the FPC circuit board from the fixture, which is beneficial to improving the retrieval efficiency.

[0010] 2. The utility model places the FPC circuit board in the fixture, operates the hydraulic cylinder, and moves the hydraulic rod vertically downward, which drives the installation box to move vertically downward, and the installation box drives the probe to move vertically downward until the probe contacts the FPC circuit board. After the probe contacts the FPC circuit board, a part of the probe is pushed back into the installation box, and the probe drives the moving plate to move vertically upward in the installation box. The moving plate compresses the second spring, and under the pressure of the second spring, the probe and the FPC circuit board are in contact, thereby realizing the adjustment of the pressing force of the probe, avoiding damage to the PC circuit board caused by the large force of the probe, realizing the protection of the PC circuit board, and being beneficial to improving the protectiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0012] Figure 1 It is a schematic diagram of a three-dimensional structure from a first-person perspective;

[0013] Figure 2 It is a schematic diagram of the three-dimensional structure of the fixture;

[0014] Figure 3 It is a schematic diagram of the three-dimensional structure of the hydraulic cylinder;

[0015] Figure 4 Schematic diagram of the three-dimensional structure of the probe.

[0016] In the figure: 1. base; 2. fixture; 3. lifting plate; 4. fixed plate; 5. first spring; 6. slide groove; 7. slider; 8. limit block; 9. support plate; 10. hydraulic cylinder; 11. hydraulic rod; 12. installation box; 13. round hole; 14. probe; 15. connecting line; 16. moving plate; 17. installation plate; 18. second spring; 19. display screen; 20. support frame. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-4 As shown, an FPC circuit board testing device includes a base 1, a fixture 2 is fixedly installed on the base 1, a lifting plate 3 is slidably arranged inside the fixture 2, two groups of fixed plates 4 are symmetrically welded on the top side of the lifting plate 3, two groups of first springs 5 ​​are symmetrically welded on the base 1, and the top side of the first spring 5 is connected to the fixed plate 4, two groups of slide grooves 6 are symmetrically opened on the base 1 on both sides of the fixture 2, a slider 7 is installed inside the slide groove 6, a limit block 8 is welded on the slider 7, and the limit block 8 is an L-shaped structure, a support plate 9 is installed on the base 1, a hydraulic cylinder 10 is fixedly installed on the top plate of the support plate 9, and the bottom end of the hydraulic cylinder 10 is connected to a hydraulic A pressure rod 11, a hydraulic rod 11 passes through the top plate of the support plate 9 and a mounting box 12 is welded on the bottom side. A circular hole 13 is opened on the bottom plate of the mounting box 12, and a probe 14 is passed through the circular hole 13. The probe 14 is located above the fixture 2, and a connecting line 15 is connected to the top side of the probe 14. A movable plate 16 is fixedly installed on the periphery of the probe 14. The movable plate 16 is assembled in the mounting box 12, and the movable plate 16 slides with the mounting box 12. A mounting plate 17 is fixedly welded on the inner wall of the mounting box 12, and the mounting plate 17 is sleeved on the periphery of the connecting line 15. A second spring 18 is installed between the movable plate 16 and the mounting plate 17. The second spring 18 The connecting wire 15 is sleeved around the outer periphery of the connecting wire 15, which passes through the side wall of the installation box 12 and is connected to a display screen 19 at the other end. A support frame 20 is installed on the bottom side of the display screen 19, and the support frame 20 is connected to the base 1. When working, the existing testing device positions the FPC circuit board through the fixture 2 during the testing of the FPC circuit board. Since the FPC circuit board has low strength and is easy to bend, it is impossible to quickly remove the FPC circuit board, resulting in low material removal efficiency. By placing the FPC circuit board in the fixture 2, the hydraulic cylinder 10 operates, and the hydraulic rod 11 moves vertically downward, the hydraulic rod 11 drives the installation The box 12 moves vertically downward, and the installation box 12 drives the probe 14 to move vertically downward until the probe 14 contacts the FPC circuit board. After the probe 14 contacts the FPC circuit board, a part of the probe 14 is pushed back into the installation box 12, and the probe 14 drives the moving plate 16 to move vertically upward in the installation box 12. The moving plate 16 compresses the second spring 18. Under the pressure of the second spring 18, the probe 14 is in contact with the FPC circuit board, thereby realizing the adjustment of the pressing force of the probe 14, avoiding the damage to the PC circuit board caused by the large force of the probe 14, and realizing the protection of the PC circuit board;

[0019] After the probe 14 contacts the FPC circuit board, the display screen 19 tests the function, electrical performance, communication performance, etc. of the FPC circuit board. The display screen 19 configures the test parameters, controls the test process, collects the test data, analyzes the test results, and stores and displays the test data;

[0020] After the test, by pushing the two groups of limit blocks 8 to slide to both sides of the fixture 2, the slider 7 on the bottom side of the limit block 8 slides stably in the slide groove 6. At this time, the two groups of limit blocks 8 no longer limit the fixed plate 4. Under the upward thrust of the first spring 5, the two groups of fixed plates 4 move vertically upward, and the two groups of fixed plates 4 drive the lifting plate 3 in the fixture 2 to move vertically upward. The lifting plate 3 drives the FPC circuit board to move vertically upward, thereby realizing the rapid removal of the FPC circuit board from the fixture 2, which is beneficial to improving the removal efficiency.

[0021] Working principle: In the process of testing the FPC circuit board, the existing test device uses the fixture 2 to position the FPC circuit board. Due to the low strength and easy bending of the FPC circuit board, the FPC circuit board cannot be quickly taken out, resulting in low material taking efficiency. By placing the FPC circuit board in the fixture 2, the hydraulic cylinder 10 is operated, and the hydraulic rod 11 moves vertically downward. The hydraulic rod 11 drives the installation box 12 to move vertically downward, and the installation box 12 drives the probe 14 to move vertically downward until the probe 14 contacts the FPC circuit board. After the probe 14 contacts the FPC circuit board, a part of the probe 14 is pushed back into the installation box 12, and the probe 14 drives the moving plate 16 to move vertically upward in the installation box 12. The moving plate 16 compresses the second spring 18. Under the pressure of the second spring 18, the probe 14 is in contact with the FPC circuit board, thereby realizing the adjustment of the pressing force of the probe 14 and avoiding The PC circuit board is prevented from being damaged by the large force of the probe 14, thereby achieving protection of the PC circuit board; after the probe 14 contacts the FPC circuit board, the display screen 19 tests the function, electrical performance, communication performance and other aspects of the FPC circuit board, and the display screen 19 will configure the test parameters, control the test process, collect test data and analyze the test results, and store and display the test data; after the test, by pushing the two groups of limit blocks 8 to slide to both sides of the fixture 2, the slider 7 on the bottom side of the limit block 8 slides stably in the slide groove 6, and at this time, the two groups of limit blocks 8 no longer limit the fixed plate 4, and under the upward thrust of the first spring 5, the two groups of fixed plates 4 move vertically upward, and the two groups of fixed plates 4 drive the lifting plate 3 in the fixture 2 to move vertically upward, and the lifting plate 3 drives the FPC circuit board to move vertically upward, thereby achieving rapid material removal of the FPC circuit board from the fixture 2, which is beneficial to improving the material removal efficiency.

[0022] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A FPC circuit board testing device, characterized in that The invention comprises a base (1), a fixture (2) is fixedly mounted on the base (1), a lifting plate (3) is slidably arranged inside the fixture (2), two groups of fixed plates (4) are symmetrically welded on the top side of the lifting plate (3), two groups of first springs (5) are symmetrically welded on the base (1), the top side of the first spring (5) is connected to the fixed plate (4), two groups of slide grooves (6) are symmetrically opened on the base (1) at both sides of the fixture (2), a slider (7) is installed inside the slide groove (6), and a A limit block (8), the limit block (8) is an L-shaped structure, a support plate (9) is installed on the base (1), a hydraulic cylinder (10) is fixedly installed on the top plate of the support plate (9), a hydraulic rod (11) is connected to the bottom end of the hydraulic cylinder (10), the hydraulic rod (11) passes through the top plate of the support plate (9) and a mounting box (12) is welded on the bottom side, a circular hole (13) is opened on the bottom plate of the mounting box (12), a probe (14) passes through the circular hole (13), and the probe (14) is located above the fixture (2).

2. The FPC circuit board testing device according to claim 1, characterized in that: The top side of the probe (14) is connected to a connecting wire (15), and a movable plate (16) is fixedly mounted on the periphery of the probe (14).

3. The FPC circuit board testing device according to claim 2, characterized in that: The movable plate (16) is assembled in the installation box (12), and the movable plate (16) slides in cooperation with the installation box (12).

4. The FPC circuit board testing device according to claim 1, characterized in that: A mounting plate (17) is fixedly welded on the inner wall of the mounting box (12), and the mounting plate (17) is sleeved on the periphery of the connecting line (15).

5. The FPC circuit board testing device according to claim 2, characterized in that: A second spring (18) is installed between the movable plate (16) and the mounting plate (17), and the second spring (18) is sleeved on the periphery of the connecting line (15).

6. The FPC circuit board testing device according to claim 2, characterized in that: The connecting wire (15) passes through the side wall of the installation box (12) and the other end is connected to a display screen (19). A support frame (20) is installed on the bottom side of the display screen (19), and the support frame (20) is connected to the base (1).

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