PCBA (Printed Circuit Board Assembly) electrical performance test board

Abstract

The utility model relates to a PCBA (Printed Circuit Board Assembly) electrical performance test board, which comprises an operation table and a test assembly, and further comprises a multidirectional moving assembly, a back plate which is arranged on the operation table and is fixed on one side of a vertical end of the multidirectional moving assembly, the test assembly is arranged on the outer side of the back plate, and two groups of push-down cylinders are arranged on the back plate; a clamping cylinder is mounted at the ejection end of the push-down cylinder; and an overturning assembly. According to the PCBA electrical performance test bench, the back plate is driven to move through the multidirectional moving assembly, so that the two groups of clamping cylinders can be driven to clamp a circuit board and transfer the circuit board to the inner side of the overturning frame, then the push cylinder operates to drive the two clamping plates to clamp and fix the circuit board, the circuit board is matched with the test assembly to complete detection on one side, and after detection is completed, the circuit board is driven to move to the inner side of the overturning frame. The servo motor drives the turnover frame to rotate, and the turnover of the circuit board is quickly adjusted, so that double-sided detection can be completed, and meanwhile, the efficiency can be effectively improved and the risk can be effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of PCBA electrical performance testing technology, specifically a PCBA electrical performance testing bench. Background Technology

[0002] Electrical performance testing of PCBA is a core indicator for evaluating its functionality, reliability, and stability, and is directly related to whether the product can function properly.

[0003] In the field of PCBA electrical performance testing, the traditional method is to use a flying probe tester. A flying probe tester is a high-precision testing device that uses a moving test probe to contact the test points on the PCBA to test its electrical performance.

[0004] A significant drawback of the aforementioned testing method is that it typically only tests one side of the PCBA at a time. However, if components or critical test points are distributed on both sides (such as surface mount components, vias, and through-hole connections), double-sided testing is necessary; otherwise, potential defects (such as open circuits, short circuits, and cold solder joints) may be missed. Therefore, when testing a double-sided PCBA, the operator must first remove the PCBA from the test fixture, manually flip it, and then reinstall it to test the other side. This process is not only time-consuming but also increases operational complexity. To address this, this application proposes a PCBA electrical performance testing bench. Utility Model Content

[0005] Based on the above description, this utility model provides a PCBA electrical performance testing bench, which solves the technical problems pointed out in the background art.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A PCBA electrical performance testing bench, including an operating table and testing components, further comprising:

[0007] A multi-directional moving component is installed on the operating table. A back plate is fixed on one side of the vertical end of the multi-directional moving component. The test component is set on the outside of this back plate, and two sets of downward pushing cylinders are installed on the back plate. A clamping cylinder is installed at the top end of the downward pushing cylinder.

[0008] The flipping assembly, installed on the operating table, includes a base plate and a mounting plate fixed on the operating table. Two sets of upright plates are fixed on the base plate, and a flipping frame is rotatably connected between the upright plates. Two sets of clamping plates are slidably connected to the inner side of the flipping frame, and two sets of opposing thrust cylinders are installed at the bottom, which are respectively connected to the corresponding clamping plates. A servo motor is installed on the mounting plate, and the drive shaft of the servo motor is fixed to the shaft end on the corresponding upright plate.

[0009] Based on the above technical solution, the present invention can be further improved as follows.

[0010] Furthermore, the test assembly includes a fixing block fixed to the outside of the back plate, a push cylinder and a guide rod are mounted on the fixing block, the piston rod of the push cylinder is fixed to a connecting plate connected to the guide rod, and a flying probe tester is mounted on the connecting plate.

[0011] Furthermore, each of the two sets of clamping plates has an arc-shaped groove at one of its four corners, and a pair of pulleys are installed on both sides of each clamping plate, with the pulleys sliding inside the flip frame.

[0012] Furthermore, two sets of stops are fixed on the flip frame, and each of the two clamps is fixed with a moving block opposite to the corresponding stop.

[0013] Furthermore, the operating platform is also equipped with limiting pillars located on both sides of the mounting plate, and a limiting block that can be attached to one of the limiting pillars is fixed on one side of the flip frame.

[0014] Furthermore, the multi-directional moving assembly includes a frame, a first lead screw device is mounted on the top of the frame, a second lead screw device is mounted on the moving end of the first lead screw device, a vertical lead screw device is fixed to the moving end of the second lead screw device, the nut end of the vertical lead screw device is fixed to the moving end of the second lead screw device, and the back plate is fixed to the vertical lead screw device.

[0015] Furthermore, two sets of lead screw transverse movement devices are installed on the operating table, and a correction component is installed on the moving end of the lead screw transverse movement device.

[0016] Furthermore, the calibration assembly includes a placement seat, the top of which has three sets of protrusions and a side plate on one side. A side-push cylinder is mounted on the side plate, and a side-push plate is fixed to the top end of the side-push cylinder. Two sets of adjusting screws are threadedly connected to the side-push plate, and a calibration block is rotatably connected between the adjusting screws.

[0017] Furthermore, the movable end of the lead screw transverse movement device is fixed with a base, an inner plate connected to the placement seat is slidably mounted on the inner side of the base, an adjusting screw that rotates with the inner plate is threaded on one side, and locking screws that are in contact with the inner plate are threaded on both sides.

[0018] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0019] This PCBA electrical performance testing platform uses a multi-directional moving component to move the backplate, which in turn drives two sets of clamping cylinders to clamp the circuit board and move it to the inside of the flipping frame. Then, the push cylinder operates, which drives two clamping plates to clamp and fix the circuit board. With the help of the testing components, one side of the test is completed. After the test is completed, the servo motor drives the flipping frame to rotate, quickly adjusting the flipping of the circuit board. Therefore, it can complete double-sided testing, which can also effectively improve efficiency and reduce risks. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a three-dimensional schematic diagram of the correction component structure in this utility model;

[0022] Figure 3 This is a three-dimensional schematic diagram of the multi-directional moving component connection structure in this utility model;

[0023] Figure 4 This utility model Figure 3 A three-dimensional schematic diagram of the structure of the test component;

[0024] Figure 5 This is a three-dimensional schematic diagram of the flipping component structure in this utility model.

[0025] The attached diagram lists the components represented by each number as follows:

[0026] 1. Operating table; 2. Lead screw transverse movement device; 3. Correction assembly; 31. Base; 32. Inner plate; 33. Adjusting screw; 34. Locking screw; 35. Placement seat; 36. Protrusion; 37. Side push cylinder; 38. Side push plate; 39. Adjusting screw; 310. Correction block; 4. Tilting assembly; 41. Base plate; 42. Vertical plate; 43. Tilting frame; 44. Clamping plate; 45. Pulley; 46. Opposing push cylinder; 47. Moving block; 4 8. Stop block; 49. Limiting support column; 410. Limiting block; 411. Servo motor; 412. Mounting plate; 5. Multi-directional moving assembly; 51. Stand; 52. First lead screw assembly; 53. Second lead screw assembly; 54. Vertical lead screw assembly; 55. Back plate; 56. Downward push cylinder; 57. Clamping cylinder; 6. Test assembly; 61. Fixing block; 62. Top push cylinder; 63. Guide rod; 64. Connecting plate; 65. Flying probe tester. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0028] Please see Figure 1-5This embodiment of a PCBA electrical performance testing bench includes an operating table 1. The operating table 1 is equipped with two sets of lead screw traverse devices 2, a multi-directional movement component 5, and a flipping component 4 located between the two sets of lead screw traverse devices 2. A correction component 3 is installed on the moving end of the lead screw traverse device 2. A back plate 55 is fixed to the vertical moving end of the multi-directional movement component 5. The back plate 55 is U-shaped, and a push cylinder 56 is installed on both sides of the back plate 55. A clamping cylinder 57 is installed at the top end of the push cylinder 56, for example, MHZL2-16D. A testing component 6 is installed at the center of the back plate 55. The testing component 6 includes a fixing block 61 fixed on the back plate 55. A push cylinder 62 and a guide rod 63 are installed on the top of the fixing block 61. The piston rod of the push cylinder 62 is fixed to a connecting plate 64 fixed to the guide rod 63. A flying probe tester 65 is installed on the connecting plate 64.

[0029] In the above structure, the circuit board is placed in the calibration component 3 for calibration, and then moved to the end near the flipping component 4 by the lead screw lateral movement device 2. Under the operation of the multi-directional movement component 5, the clamping cylinder 57 can be moved by the back plate 55. With the cooperation of the push cylinder 56, the circuit board is moved close to the circuit board in the calibration component 3, thereby moving the circuit board into the flipping component 4. Similarly, the test component 6 adjusts its position under the movement of the multi-directional movement component 5, and the connecting plate 64 is pushed up and down by the push cylinder 62. Under the action of the flying probe tester 65, the circuit board is tested. After the test is completed, the flipping component 4 can quickly flip the circuit board, thereby completing the double-sided test. Therefore, it can effectively improve efficiency and reduce the risk of disassembling and damaging the circuit board.

[0030] After the clamping cylinder 57 returns the inspected circuit board to the calibration component 3, another clamping cylinder 57 places the circuit board into the flipping component 4, thus enabling the loading operation to be completed simultaneously with the unloading.

[0031] like Figure 2 The correction component 3 includes a placement seat 35 fixed on the moving end of the lead screw transverse device 2. The placement seat 35 has protrusions 36 formed at three corners and a side plate formed on the back. A side push cylinder 37 is installed on the side plate in an inclined manner. A side push plate 38 is fixed to the top end of the side push cylinder 37. Two adjusting screws 39 are threadedly connected to the side push plate 38. A correction block 310 is rotatably connected between the two adjusting screws 39.

[0032] When the circuit board is placed on the placement seat 35, the circuit board is located between the three protrusions 36 and the correction block 310. Then, the side push cylinder 37 drives the correction block 310 to push through the side push plate 38 and the adjusting screw 39, thereby pushing the circuit board to contact the protrusions 36 to complete the correction process of the circuit board. This avoids the circuit board from being misaligned, making it difficult for the clamping cylinder 57 to clamp or causing damage to the circuit board. Furthermore, the position of the correction block 310 can be adjusted by rotating the adjusting screw 39, and the distance of movement of the correction block 310 can be adjusted according to the needs to reduce damage to the circuit board.

[0033] To further explain, the movable end of the lead screw transverse device 2 is fixed with a base 31. The inner side of the base 31 is slidably connected to an inner plate 32 that is fixed to the placement seat 35. The front is threadedly connected to an adjusting screw 33 that is rotatably connected to the front of the inner plate 32. Both sides are threadedly connected to two locking screws 34 that abut against the inner plate 32.

[0034] By rotating the adjusting screw 33, the inner plate 32 can be adjusted to change position, thereby adjusting the position of the placement seat 35 as needed. After adjustment, the inner plate 32 is locked and positioned by the locking screw 34 on the side.

[0035] like Figure 3 The multi-directional moving component 5 includes a stand 51 fixed on the operating table 1. A first lead screw device 52 is installed on the top of the stand 51. A second lead screw device 53 is installed at the moving end of the first lead screw device 52. A vertical lead screw device 54 is installed at the moving end of the second lead screw device 53. The nut end of the vertical lead screw device 54 is fixed to the moving end of the second lead screw device 53. The back plate 55 is installed on the front of the vertical lead screw device 54. The lead screw lateral movement device 2, the first lead screw device 52, the second lead screw device 53 and the vertical lead screw device 54 are all existing lead screw and nut structures, which will not be described in detail here.

[0036] By combining the first lead screw device 52, the second lead screw device 53 and the vertical lead screw device 54, the back plate 55 can be driven to move precisely in the X, Y and Z directions. This allows the two sets of clamping cylinders 57 to move above the two sets of correction components 3 and flipping components 4 as needed, and also drives the test component 6 to move together to complete the testing of the circuit board.

[0037] like Figure 5The flipping assembly 4 includes a base plate 41 fixed on the operating table 1 and a mounting plate 412 located on the right side of the base plate 41. Two opposing upright plates 42 are fixed on the top of the base plate 41. A flipping frame 43 is rotatably connected between the two upright plates 42. A clamping plate 44 is slidably connected to the inner side of the flipping frame 43. Two sets of opposing push cylinders 46 are installed at the bottom. The piston rods of the opposing push cylinders 46 are fixed to the corresponding clamping plates 44. A servo motor 411 for driving the flipping frame 43 to rotate is installed on the mounting plate 412.

[0038] When the clamping cylinder 57 moves the circuit board into the flipping frame 43 and places it between the two clamping plates 44, the push cylinder 46 operates, causing the two clamping plates 44 to move relative to each other until they contact the circuit board and complete the clamping and fixing of the circuit board. After one side of the circuit board is tested, the test component 6 moves up a bit, and the servo motor 411 drives the flipping block to rotate, thereby enabling the circuit board to flip and complete the testing operation on the other side.

[0039] To further explain, arc-shaped grooves are provided at the four corners between the two clamping plates 44. Therefore, during the clamping process, the circuit board extends into the grooves, which provide support for the circuit board, thereby improving the stability of the circuit board clamping and rotation.

[0040] Each of the two clamping plates 44 has a pair of pulleys 45 installed on its front and rear sides, and the pulleys 45 slide inside the flip frame 43. The pulleys 45 reduce the friction between the clamping plates 44 and the flip frame 43, thereby improving the smoothness of the movement of the clamping plates 44.

[0041] Meanwhile, two sets of stops 48 are embedded and fixed in the front of the flip frame 43. The top of the left stop 48 and the bottom of the right stop 48 extend and protrude. On the opposite sides of the two clamping plates 44, there are moving blocks 47 that are opposite to the corresponding stops 48. When the push cylinder 46 drives the two sets of clamping blocks to move relative to each other, the moving blocks 47 will contact the stops 48, thereby limiting the movement through the moving blocks 47 and the stops 48.

[0042] Meanwhile, the top of the operating table 1 is fixed with limiting pillars 49 located on both sides of the mounting plate 412, and the right side of the flip frame 43 is fixed with a limiting block 410 that is in contact with one of the limiting pillars 49. When the servo motor 411 drives the flip frame 43 to rotate, it can be limited by the cooperation of the limiting pillars 49 and the limiting block 410, so that the flip frame 43 can drive the circuit board to flip accurately.

[0043] The working principle of the above embodiments is as follows:

[0044] First, the circuit board to be tested is placed in the placement seat 35. The side-push cylinder 37 operates, driving the correction block 310 to move. With the cooperation of the protrusion 36, the circuit board is corrected. Then, the lead screw lateral movement device 2 drives the placement seat 35 to move close to the flipping assembly 4. Then, the cooperation of the first lead screw device 52, the second lead screw device 53, the vertical lead screw device 54 and the downward push cylinder 56 drives the corresponding clamping cylinder 57 to clamp and move the circuit board on the placement seat 35 into the flipping frame 43. Then, the push cylinder 46 drives the clamping plate 44 to clamp and limit the circuit board. Finally, the circuit board is moved by multi-directional movement. The moving component 5 drives the back plate 55 to move, while the push cylinder 62 drives the connecting plate 64, so that the flying probe tester 65 completes the test of the circuit board. After the test is completed, the flying probe tester 65 resets, and then the servo motor 411 runs, driving the flip frame 43 to rotate, thereby flipping the circuit board to the other side to complete the test. After the test is completed, the circuit board can be returned to the corresponding placement seat 35, and the clamping cylinder 57 on the other side can place the circuit board into the flip frame 43 for the next set of tests. Therefore, the efficiency of the test can be effectively improved and the damage to the circuit board can be reduced.

[0045] The entire workflow is now complete, and anything not described in detail in this specification is existing technology known to those skilled in the art.

[0046] It should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0047] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A PCBA electrical performance testing bench, comprising an operating table (1) and a testing assembly (6), characterized in that: Also includes: A multi-directional moving component (5) is installed on the operating table (1). A back plate (55) is fixed on one side of the vertical end of the multi-directional moving component (5). The test component (6) is set on the outside of this back plate (55). Two sets of downward pushing cylinders (56) are installed on the back plate (55). A clamping cylinder (57) is installed at the top end of the downward pushing cylinder (56). The flipping assembly (4) is installed on the operating table (1) and includes a base plate (41) and a mounting plate (412) fixed on the operating table (1). Two sets of upright plates (42) are fixed on the base plate (41). A flipping frame (43) is rotatably connected between the upright plates (42). Two sets of clamping plates (44) are slidably connected to the inner side of the flipping frame (43). Two sets of counter-push cylinders (46) are installed at the bottom and are respectively connected to the corresponding clamping plates (44). A servo motor (411) is installed on the mounting plate (412). The drive shaft of the servo motor (411) is fixed to the shaft end on the corresponding upright plate (42).

2. The PCBA electrical performance test table of claim 1, wherein: The test assembly (6) includes a fixing block (61) fixed to the outside of the back plate (55), a push cylinder (62) and a guide rod (63) are installed on the fixing block (61), the piston rod of the push cylinder (62) is fixed to a connecting plate (64) connected to the guide rod (63), and a flying needle tester (65) is installed on the connecting plate (64).

3. The PCBA electrical performance test table of claim 1, wherein: The two sets of clamps (44) are provided with arc-shaped grooves at the four corners. A pair of pulleys (45) are installed on both sides of the clamps (44), and the pulleys (45) slide inside the flip frame (43).

4. The PCBA electrical performance testing bench according to claim 3, characterized in that: Two sets of stops (48) are fixed on the flip frame (43), and two clamps (44) are fixed with moving blocks (47) opposite to the corresponding stops (48).

5. A PCBA electrical performance testing bench according to claim 4, characterized in that: The operating table (1) is also equipped with limiting pillars (49) located on both sides of the mounting plate (412), and a limiting block (410) that can be attached to one of the limiting pillars (49) is fixed on one side of the flip frame (43).

6. The PCBA electrical performance testing bench according to claim 1, characterized in that: The multi-directional moving component (5) includes a frame (51), a first lead screw device (52) is installed on the top of the frame (51), a second lead screw device (53) is installed on the moving end of the first lead screw device (52), a vertical lead screw device (54) is fixed to the moving end of the second lead screw device (53), the nut end of the vertical lead screw device (54) is fixed to the moving end of the second lead screw device (53), and the back plate (55) is fixed on the vertical lead screw device (54).

7. A PCBA electrical performance testing bench according to claim 1, characterized in that: Two sets of lead screw transverse movement devices (2) are installed on the operating table (1), and a correction component (3) is installed on the moving end of the lead screw transverse movement device (2).

8. A PCBA electrical performance testing bench according to claim 7, characterized in that: The correction component (3) includes a placement seat (35), the top of which has three sets of protrusions (36) and a side plate on one side. A side push cylinder (37) is installed on the side plate, and a side push plate (38) is fixed to the top end of the side push cylinder (37). Two sets of adjusting screws (39) are threaded onto the side push plate (38), and a correction block (310) is rotatably connected between the adjusting screws (39).

9. A PCBA electrical performance testing bench according to claim 8, characterized in that: The movable end of the lead screw transverse device (2) is fixed with a base (31), the inner side of the base (31) is slidably connected to the placement seat (35) with an inner plate (32), and one side is threadedly connected to an adjusting screw (33) that rotates with the inner plate (32), and both sides are threadedly connected to locking screws (34) that are in contact with the inner plate (32).

Images