A circuit board functional testing device

Abstract

This utility model discloses a circuit board functional testing device, including a test platform with a detachable testing mold; a support on the test platform, with a push-pull assembly connected to a lifting plate, which is slidably connected to the support; multiple mounting plates are slidably mounted on the bottom of the lifting plate along the Y direction, and multiple first pressure rods are slidably mounted on the bottom of the mounting plates along the X direction; a first groove is formed on the side of each first pressure rod, a connecting block is rotatably mounted within the first groove, and a second pressure rod is mounted at the bottom of the connecting block; the connecting block can rotate to position the second pressure rod at the bottom of the first pressure rod, or rotate to position the second pressure rod within the first groove; a display and control buttons are provided on the test platform; the display, control buttons, and probes are electrically connected. This utility model allows the position of the second pressure rods to be adjusted according to the shape of the circuit board, and unused second pressure rods can be folded and placed into the first grooves, thus better securing the circuit board without damaging it.

Description

Technical Field

[0001] This utility model belongs to the technical field of circuit board testing devices, and in particular relates to a circuit board functional testing device. Background Technology

[0002] Circuit boards (PCBs) are the core carriers of electronic components, designed, manufactured, and assembled. Their core function is to miniaturize and visualize circuit layouts, and they are widely used in electronic equipment production and layout optimization. After PCB processing, testing is required to ensure a reasonable and accurate circuit layout. Common testing methods include visual inspection, electronic inspection, and automated optical inspection. Visual inspection involves inspectors using a magnifying glass or projector to visually check for defects. Common electronic inspection devices include bed-of-needle inspection and flying probe inspection. Automated optical inspection uses a high-resolution camera and special light source to acquire PCB images, and then automatically detects defects through grayscale conversion, binary processing, feature extraction, feature detection, and template matching. It offers advantages such as stability, reliability, high precision, and high efficiency. During electronic inspection, the PCB is placed in a corresponding mold with probes, fixed by a pressure plate, and then tested. In current technology, PCB specifications vary widely, and molds must be changed according to the shape of the PCB. However, the pressure plate is usually fixed and cannot be adjusted according to the needs of the PCB. Incorrect pressure plate placement can damage the PCB layout. Utility Model Content

[0003] Based on the above background, the purpose of this utility model is to provide a circuit board functional testing device.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A circuit board functional testing device includes a test platform, on which a test mold is detachably mounted, and a placement slot is provided on the test mold, with a probe disposed in the placement slot;

[0006] The test stand is equipped with a bracket, and the bracket is equipped with a push-pull assembly. The push-pull assembly is connected to a lifting plate, and the lifting plate is slidably connected to the bracket.

[0007] The bottom of the lifting plate is provided with multiple mounting plates along the Y direction, and the bottom of the mounting plates is provided with multiple first pressure rods along the X direction; a first groove is provided on the side of the first pressure rod, a connecting block is rotatably provided in the first groove, and a second pressure rod is provided at the bottom of the connecting block. The connecting block can be rotated to place the second pressure rod at the bottom of the first pressure rod, or rotated to place the second pressure rod in the first groove.

[0008] The test stand is equipped with a display and control buttons; the display, control buttons and probes are electrically connected.

[0009] Furthermore, the bracket is provided with a limiting rod, and the other end of the limiting rod is located on the top of the test platform;

[0010] The limiting rod passes through the lifting plate and is slidably connected to the lifting plate.

[0011] Furthermore, the push-pull assembly includes a positioning block, which is fixedly disposed on the side of the bracket. The lower end of the positioning block is provided with a positioning sleeve, and a push rod is slidably disposed inside the positioning sleeve. The bottom of the push rod is connected to the lifting plate. The top of the push rod is rotatably provided with a first connecting rod, and the other end of the first connecting rod is rotatably connected to the middle position of a second connecting rod. One end of the second connecting rod is rotatably connected to the positioning block, and the other end is connected to a handle.

[0012] The second connecting rod is folded.

[0013] Furthermore, a first sliding groove is provided at the bottom of the lifting plate along the Y direction, a first screw is rotatably provided in the first sliding groove, and one end of the first screw extends out of the first sliding groove and is connected to an adjusting block;

[0014] The mounting plate is provided with a first slider on its top, and the first slider is slidably disposed in a first groove;

[0015] The first slider is threadedly connected to the first screw.

[0016] Furthermore, a stabilizing groove is provided at the bottom of the lifting plate along the Y direction, and the stabilizing groove is symmetrically arranged on both sides of the first sliding groove;

[0017] The mounting plate has stabilizing blocks at both ends of its top, and the stabilizing blocks are slidably disposed in the stabilizing groove.

[0018] Furthermore, a second sliding groove is provided at the bottom of the mounting plate along the X direction, and a second screw is rotatably provided in the second sliding groove. One end of the second screw extends out of the second sliding groove and is connected to an adjusting block.

[0019] The first pressure rod is provided with a second slider at its top. The second slider is slidably disposed in the second groove and is threadedly connected to the second screw.

[0020] Furthermore, a slot is provided in the first groove;

[0021] A third sliding groove is provided on one side of the connecting block. A spring is provided in the third sliding groove. The other end of the spring is connected to a locking block. One end of the locking block is slidably disposed in the third sliding groove, and the other end is locked in the locking groove.

[0022] Furthermore, the side of the card block closest to the first pressure rod is sloped.

[0023] Furthermore, a push block is slidably provided on the side of the first pressure rod, and one end of the push block is slidably disposed in the slot and in contact with the side of the slot block.

[0024] Furthermore, the bottom of the second pressure rod is made of silicone.

[0025] Furthermore, the adjusting block includes a first control block and a second control block, wherein the first control block is connected to a corresponding first screw or second screw; and the second control block is sleeved on the outside of the first control block.

[0026] The first control block is provided with a spline groove, and the second control block is provided with a spline shaft, which is inserted into the spline groove;

[0027] The second control block has a gear on its outer side;

[0028] The corresponding lifting plate or mounting plate has a toothed ring groove on its side, and the gear is inserted into the corresponding toothed ring groove.

[0029] This utility model has the following beneficial effects:

[0030] The circuit board is placed in the placement slot. The mounting plate is moved along the Y direction and the first pressure rod is moved along the X direction to adjust the placement of the second pressure rod. The second pressure rod is aligned with the side and pressable position of the circuit board. The second pressure rod that extends beyond the outer edge of the circuit board and the upper pressure rod that is improperly positioned and may damage the circuit board are folded into the first groove. After adjustment, the lifting plate is moved down by the push-pull assembly so that the second pressure rod presses against the top of the circuit board, making the contacts on the circuit board fit with the probes. Then, the function is tested by adjusting the control button. The second pressure rod can be adjusted according to the shape of the circuit board, which can better fix the circuit board and prevent damage to the circuit board. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0032] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0033] Figure 2 This is a three-dimensional structural diagram of the push-pull assembly of this utility model;

[0034] Figure 3 This is a three-dimensional structural diagram of the disassembled adjustment block of this utility model;

[0035] Figure 4 This is a three-dimensional structural diagram showing the disassembled mounting plate, lifting plate, and first pressure rod of this utility model.

[0036] Figure 5 This is a schematic diagram of the disassembled three-dimensional structure of the first pressure rod, the second pressure rod, and the locking block of this utility model. Figure 1 ;

[0037] Figure 6 This is a schematic diagram of the disassembled three-dimensional structure of the first pressure rod, the second pressure rod, and the locking block of this utility model. Figure 2 .

[0038] The components include: 1. Test bench; 11. Support frame; 12. Display; 13. Control buttons; 14. Limit rod;

[0039] 2. Inspection mold; 21. Placement slot; 22. Probe;

[0040] 3. Push-pull assembly; 31. Positioning block; 32. Positioning sleeve; 33. Push rod; 34. First connecting rod; 35. Second connecting rod; 36. Handle;

[0041] 4. Lifting plate; 41. First slide groove; 42. First screw; 43. First slider; 44. Stabilizing groove; 45. Stabilizing block;

[0042] 5. Mounting plate; 51. Second slide groove; 52. Second screw; 53. Second slider;

[0043] 6. First pressure rod; 61. First groove; 62. Connecting block; 63. Second pressure rod; 64. Third slide groove; 65. Spring; 66. Locking block; 67. Push block; 68. Locking groove;

[0044] 7. Adjusting block; 71. First control block; 72. Second control block; 73. Spline groove; 74. Spline shaft; 75. Gear; 76. Gear ring groove. Detailed Implementation

[0045] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0046] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0047] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0048] like Figure 1-6As shown, a circuit board functional testing device includes a test platform 1, on which a test mold 2 is detachably mounted. The mold has a placement slot 21 for placing the circuit board. The placement slot 21 has openings on both sides for easy placement and removal of the circuit board. A probe 22 is located within the placement slot 21. The test platform 1 is equipped with a display 12 and control buttons 13. The display 12, control buttons 13, and probe 22 are electrically connected for testing the circuit board's voltage, current, and other functions. The test platform 1 is equipped with a support 11, which is L-shaped. A push-pull assembly 3 is mounted on the support 11 and connected to a lifting plate 4. The lifting plate 4 is slidably connected to the support 11. The push-pull assembly 3 controls the lifting of the lifting plate 4. When the lifting plate 4 moves downward, a second pressure rod 63 at the bottom presses down on the top of the circuit board. The support 11 is equipped with... A limiting rod 14 is provided, with its other end located at the top of the test platform 1. The limiting rod 14 passes through the lifting plate 4 and is slidably connected to the lifting plate 4, providing better stability for the longitudinal movement of the lifting plate 4. Multiple mounting plates 5 are slidably provided at the bottom of the lifting plate 4 along the Y direction, and multiple first pressure rods 6 are slidably provided at the bottom of the mounting plates 5 along the X direction. A first groove 61 is provided on the side of the first pressure rod 6, and the first groove 61 passes through the bottom of the first pressure rod 6. A connecting block 62 is rotatably provided in the first groove 61, with the rotation center of the connecting block 62 located in the middle of the first groove 61. A second pressure rod 63 is provided at the bottom of the connecting block 62. The connecting block 62 can be rotated to place the second pressure rod 63 at the bottom of the first pressure rod 6, or rotated to place the second pressure rod 63 in the first groove 61. The bottom of the second pressure rod 63 is made of silicone, which protects the circuit board. In practical use, the testing mold 2 is replaced to correspond to the circuit board model of the batch to be tested. Then, the circuit board is placed in the placement slot 21. The mounting plate 5 is moved along the Y direction and the first pressure rod 6 is moved along the X direction to adjust the placement of the second pressure rod 63. The second pressure rod 63 is aligned with the side of the circuit board and the pressable position. The second pressure rod 63 that exceeds the outer perimeter of the circuit board and the upper second pressure rod 63 that is not properly positioned and may damage the circuit board are folded into the first groove 61. After adjustment, the lifting plate 4 is moved down by the push-pull assembly 3 so that the second pressure rod 63 presses against the top of the circuit board, so that the contacts on the circuit board are in contact with the probe 22. Then, the function test is performed by adjusting the control button 13. The second pressure rod 63 can be adjusted according to the shape of the circuit board to better fix the circuit board and prevent damage to the circuit board.

[0049] The push-pull assembly 3 includes a positioning block 31, which is fixedly mounted on the side of the bracket 11. A positioning sleeve 32 is provided at the lower end of the positioning block 31. One end of a push rod 33 is slidably mounted inside the positioning sleeve 32. The bottom of the push rod 33 is connected to the lifting plate 4. The connection method can be bolted connection. A first connecting rod 34 is rotatably mounted on the top of the push rod 33. There are two first connecting rods 34, which are symmetrically arranged on both sides of the push rod 33. The other end of the first connecting rod 34 is rotatably connected to the middle position of a second connecting rod 35. The second connecting rod 35 is located between the two first connecting rods 34. One end of the second connecting rod 35 is rotatably connected to the positioning block 31, and the other end is connected to a handle 36. The second connecting rod 35 is folded. The handle 36 drives the second connecting rod 35 to rotate toward the side away from the bracket 11. The second connecting rod 35 drives the first connecting rod 34 to rotate. Under the limiting action of the positioning sleeve 32, the push rod 33 moves downward, causing the lifting plate 4 to move downward. The second pressing rod 63 presses down on the top of the circuit board.

[0050] The lifting plate 4 has a first groove 41 at its bottom along the Y direction. A first screw 42 is rotatably installed in the first groove 41. One end of the first screw 42 extends out of the first groove 41 and is connected to an adjusting block 7. The adjusting block 7 has a self-locking function. The top of the mounting plate 5 has a first slider 43, which is slidably installed in the first groove 41. The first slider 43 is threadedly connected to the first screw 42. The bottom of the lifting plate 4 has a stabilizing groove 44 at its bottom along the Y direction. The stabilizing groove 44 is symmetrically installed on both sides of the first groove 41. The top two ends of the mounting plate 5 have stabilizing blocks 45, which are slidably installed in the stabilizing groove 44.

[0051] The mounting plate 5 has a second groove 51 at the bottom along the X direction. A second screw 52 is rotatably installed in the second groove 51. One end of the second screw 52 extends out of the second groove 51 and is connected to an adjusting block 7. The top of the first pressure rod 6 has a second slider 53. The second slider 53 is slidably installed in the second groove 51 and is threadedly connected to the second screw 52.

[0052] The first groove 61 has a slot 68; the connecting block 62 has a third slide groove 64 on one side, and a spring 65 is provided in the third slide groove 64. The other end of the spring 65 is connected to a locking block 66. The side of the locking block 66 near the first pressure rod 6 is set with an incline. When rotating downward, the locking block 66 is pressed by the first groove 61 and automatically slides into the third slide groove 64 without the need for the operator to press it into the third slide groove 64. One end of the locking block 66 is slidably set in the third slide groove 64. When it moves to the position of the slot 68, the other end of the locking block 66 is locked in the slot 68. The first pressure rod 6 has a push block 67 slidably set on the side. One end of the push block 67 is slidably set in the slot 68 and contacts the side of the locking block 66. By pushing the push block 67 from the outside, the locking block 66 can be pushed into the third slide groove 64, releasing the locking connection between the locking block 66 and the slot 68.

[0053] The adjusting block 7 includes a first control block 71 and a second control block 72. The first control block 71 is connected to the corresponding first screw 42 or second screw 52. The second control block 72 is sleeved on the outside of the first control block 71. The first control block 71 is provided with a spline groove 73, and the second control block 72 is provided with a spline shaft 74, which is inserted into the spline groove 73. A gear 75 is provided on the outside of the second control block 72. The side of the corresponding lifting plate 4 or mounting plate 5 is provided with a gear ring groove 76, and the gear 75 is inserted into the corresponding gear ring groove 76. When in use, pulling the second control block 72 will bring the gear 75 out of the gear ring groove 76, which will cause the first screw 42 or the second screw 52 to rotate. After adjustment, pushing the second control block 72 will cause the gear 75 to be inserted into the gear ring groove 76, which will put the adjusting block 7 into a self-locking state.

[0054] The working principle of this utility model is as follows: In specific use, the testing mold 2 is replaced to correspond to the circuit board model of the batch to be tested. Then, the circuit board is placed in the placement slot 21. The self-locking state of the adjusting block 7 connected to the first screw 42 is released, that is, the second control block 72 is pulled to bring the gear 75 out of the gear ring groove 76. Then, the rotation of the second control block 72 drives the first screw 42 to rotate, and the first slider 43 slides in the first slide groove 41. The position of the mounting plate 5 in the Y direction is adjusted. Then, the second control block 72 is pushed to make the gear 75 insert into the gear ring groove 76 to complete the self-locking of the adjusting block 7. The adjusting block 7 of the second screw 52 is used in the same way to drive the second screw 52 to rotate, thereby making the second slider 53 slide in the second slide groove 51. This adjusts the placement of the second pressure rod 63, ensuring it aligns with the side of the circuit board and the pressable position. The second pressure rod 63 extending beyond the circuit board's perimeter, and any improperly positioned upper pressure rod 63 that might damage the circuit board, are folded into the first groove 61. Pushing the push block 67 applies pressure to the locking block 66, pushing it into the third sliding groove 64, releasing the locking block 66 from the locking groove 68. Then, rotating upwards retracts the second pressure rod 63 into the first groove 61. After adjustment, the push-pull assembly 3 moves the lifting plate 4 downwards, pressing the second pressure rod 63 against the top of the circuit board, aligning the contacts on the circuit board with the probe 22. Finally, the function is tested using the control button 13.

[0055] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A circuit board functional testing device, comprising a test bench (1), characterized in that: The test bench (1) is detachably provided with a test mold (2), the test mold (2) is provided with a placement slot (21), and a probe (22) is provided in the placement slot (21); The test bench (1) is provided with a bracket (11), and the bracket (11) is provided with a push-pull assembly (3). The push-pull assembly (3) is connected to the lifting plate (4), and the lifting plate (4) is slidably connected to the bracket (11). The bottom of the lifting plate (4) is provided with multiple mounting plates (5) that slide along the Y direction, and the bottom of the mounting plate (5) is provided with multiple first pressure rods (6) that slide along the X direction; the first pressure rod (6) has a first groove (61) on its side, and a connecting block (62) is rotatably provided in the first groove (61); the bottom of the connecting block (62) is provided with a second pressure rod (63), and the connecting block (62) can be rotated so that the second pressure rod (63) is located at the bottom of the first pressure rod (6), or rotated so that the second pressure rod (63) is located in the first groove (61); The test bench (1) is equipped with a display (12) and a control button (13); the display (12), the control button (13) and the probe (22) are electrically connected.

2. The circuit board functional testing device according to claim 1, characterized in that: The push-pull assembly (3) includes a positioning block (31), which is fixedly mounted on the side of the bracket (11). The lower end of the positioning block (31) is provided with a positioning sleeve (32), and a push rod (33) is slidably mounted inside the positioning sleeve (32). The bottom of the push rod (33) is connected to the lifting plate (4). The top of the push rod (33) is rotatably provided with a first connecting rod (34), and the other end of the first connecting rod (34) is rotatably connected to the middle position of a second connecting rod (35). One end of the second connecting rod (35) is rotatably connected to the positioning block (31), and the other end is connected to a handle (36).

3. The circuit board functional testing device according to claim 1, characterized in that: The bottom of the lifting plate (4) is provided with a first sliding groove (41) along the Y direction. A first screw (42) is rotatably provided in the first sliding groove (41). One end of the first screw (42) extends out of the first sliding groove (41) and is connected to an adjusting block (7). The mounting plate (5) is provided with a first slider (43) on the top, and the first slider (43) is slidably disposed in the first groove (41); The first slider (43) is threadedly connected to the first screw (42).

4. The circuit board functional testing device according to claim 3, characterized in that: The bottom of the lifting plate (4) is provided with a stabilizing groove (44) along the Y direction, and the stabilizing groove (44) is symmetrically arranged on both sides of the first sliding groove (41); The mounting plate (5) has stabilizing blocks (45) at both ends of its top, and the stabilizing blocks (45) are slidably disposed in the stabilizing groove (44).

5. The circuit board functional testing device according to claim 3, characterized in that: The mounting plate (5) has a second groove (51) at the bottom along the X direction. A second screw (52) is rotatably provided in the second groove (51). One end of the second screw (52) extends out of the second groove (51) and is connected to an adjusting block (7). The first pressure rod (6) is provided with a second slider (53) at the top. The second slider (53) is slidably disposed in the second groove (51), and the second slider (53) is threadedly connected to the second screw (52).

6. The circuit board functional testing device according to claim 1, characterized in that: A slot (68) is provided in the first groove (61); The connecting block (62) has a third sliding groove (64) on one side, and a spring (65) is provided in the third sliding groove (64). The other end of the spring (65) is connected to a locking block (66). One end of the locking block (66) is slidably disposed in the third sliding groove (64), and the other end is locked in the locking groove (68).

7. The circuit board functional testing device according to claim 6, characterized in that: The first pressure rod (6) has a push block (67) slidably provided on its side. One end of the push block (67) is slidably provided in the slot (68) and is in contact with the side of the slot block (66).

8. The circuit board functional testing device according to claim 5, characterized in that: The adjusting block (7) includes a first control block (71) and a second control block (72). The first control block (71) is connected to a corresponding first screw (42) or second screw (52). The second control block (72) is sleeved on the outside of the first control block (71). The first control block (71) is provided with a spline groove (73), and the second control block (72) is provided with a spline shaft (74), which is inserted into the spline groove (73); The second control block (72) has a gear (75) on its outer side; The corresponding lifting plate (4) or mounting plate (5) has a toothed ring groove (76) on its side, and the gear (75) is inserted into the corresponding toothed ring groove (76).

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