PCBA board function test device and method

Abstract

The invention relates to the technical field of PCBA board testing equipment, and provides PCBA board function testing equipment and method.The PCBA board function testing equipment comprises a machine shell, I-shaped rails are symmetrically arranged in the machine shell, a material conveying trolley moving in the direction of the rails is arranged between the symmetrically-arranged rails, and the material conveying trolley comprises a frame moving along the rails; the top of the vehicle frame is rotationally connected with an overturning table used for bearing a PCBA board, and the bottom of the overturning table is connected with the vehicle frame through a first torsional spring. The PCBA board detection device overcomes the defects in the prior art, is reasonable in design and compact in structure, when it is detected that a PCBA board breaks down, the overturning table is controlled to overturn, the PCBA board on the overturning table falls off from the top of the overturning table, manual taking of the broken-down PCBA board is not needed, manpower is reduced, efficiency is improved, the material conveying trolley is controlled to move upwards before detection, and the detection efficiency is improved. And then the position of the PCBA board is fixed through the limitation of the limiting notch, and the testing equipment can be aligned with the PCBA board during testing, so that the detection precision is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of PCBA board testing equipment, and in particular to a PCBA board function testing device and method. Background Art

[0002] In the field of electronic manufacturing, functional testing of printed circuit board assemblies (PCBA boards) is a core step to ensure that their performance indicators meet the standards and product quality is reliable. Traditionally, this testing process mainly relies on the pin-board testing method, which uses a special pin-board to directly contact the test points on the PCBA board to achieve the transmission and detection of electrical signals, thereby verifying the functional integrity of the PCBA board.

[0003] However, the existing pin board testing scheme has significant deficiencies in dealing with PCBA board fault identification and subsequent processing. Specifically, when the test system detects that the PCBA board has functional defects or does not meet the preset standards, the operator is usually required to manually intervene and perform physical disassembly operations to remove it from the test equipment. This series of manual operation steps is not only time-consuming and labor-intensive, but also greatly limits the overall efficiency of the test process and increases production costs. To this end, we propose a PCBA board functional testing device and method. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the present invention provides a PCBA board functional testing device and method, which overcomes the deficiencies in the prior art, has a reasonable design and a compact structure, and solves the problem that when the test system detects that the PCBA board has functional defects or does not meet the preset standards, manual intervention by an operator is usually required.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a PCBA board functional testing device, including a casing, wherein I-shaped tracks are symmetrically arranged in the casing, and a material transport trolley moving along the direction thereof is symmetrically arranged between the tracks, and the material transport trolley includes a frame moving along the track, and a turning table for carrying the PCBA board is rotatably connected to the top of the frame, and the bottom of the turning table is connected to the frame through a first torsion spring so that the turning table is horizontally placed on the top of the frame when it is not under force.

[0008] Preferably, a first cylinder is provided in the casing, a lifting rod is provided at the top output end of the first cylinder, a lifting plate is provided on the outer wall of the lifting rod, push plates are connected to the tops of both sides of the lifting plate through two first springs, and a through hole is provided inside the frame corresponding to the lifting rod, so that the lifting rod can push the flip table to flip through the through hole during the upward movement.

[0009] Preferably, the track corresponds to the top of the frame with a limiting notch for its upward movement, so that the top of the frame moves upward into the limiting notch, and the two side edges of the bottom of the frame along the track direction are provided with skirts extending outwards to prevent the frame from leaving the track through the limiting notch during the upward movement.

[0010] Preferably, a second cylinder is provided at the top of the casing, and a needle plate for testing is provided at the bottom output end of the second cylinder. I-shaped second guide rails are symmetrically provided on both sides of the needle plate, and each of the second guide rails is slidably connected with a slider, and a rotatable cleaning roller is provided between the sliders on both sides, and the bristles on the outer wall of the cleaning roller are in contact with the needle head at the bottom of the needle plate.

[0011] Preferably, one end of the second guide rail extends out of the needle plate so that the cleaning roller can move out of the bottom of the needle plate, and the bottom end of the second guide rail extending out of the needle plate is provided with a guide wheel, and the housing is provided with a pair of pull ropes, and the pull ropes pass through the bottom of the guide wheel and are connected to the slider, and the slider is connected to the second guide rail through a second spring so that the slider can be reset when no force is applied, and a guide rod penetrating the slider is provided in the second guide rail, and the second spring is sleeved on the outer wall of the guide rod to prevent the second spring from deforming outward during compression.

[0012] Preferably, a boss is provided on one side of the needle plate, a rotatable driving column is provided on the top of the track, a driving groove that cooperates with the boss is opened around the outer wall of the driving column, so that the driving column rotates during the up and down movement of the boss, the bottom of the driving column is connected to the top of the track through a second torsion spring, and a brush plate is provided on one side of the driving column, and bristles are provided on the bottom of the brush plate to cooperate in cleaning the top of the PCBA board.

[0013] Preferably, a motor, a belt and a pair of screw rods are provided in the casing, and the motor drives the pair of screw rods to rotate synchronously through the belts. The outer wall of each screw rod is threadedly connected to a pair of support plates, the top of the support plate on the same side is connected to the bottom of the same track, and the bottom of the support plate on the opposite side is slidably connected to the first guide rail.

[0014] Preferably, windows are provided on both sides of the casing along the track direction to allow the material transport trolley to move out of the casing.

[0015] Preferably, a discharge port is provided on the flip-corresponding sides of the casing and the flip table, and a guide plate is provided at the bottom of the discharge port to allow the PCBA board dropped in the flip table to slide out of the casing.

[0016] A PCBA board function testing method, the process steps are as follows:

[0017] S1. Place the PCBA board on the turning table on the top of the transport trolley, and then control the transport trolley to move on the track to move it to a suitable position inside the casing;

[0018] S2. Clean the surface of the PCBA board and needle board on the top of the material transport trolley to remove surface impurities;

[0019] S3, control the needle plate to move toward the PCBA board and detect the PCBA board;

[0020] S4. After the inspection is completed, if the PCBA board is faulty, the flip table is controlled to flip so that the PCBA board on it falls down. If the PCBA board is not faulty, the moving car drives the PCBA board to continue moving to the next operation link.

[0021] (III) Beneficial effects

[0022] The embodiment of the present invention provides a PCBA board function testing device and method, which has the following beneficial effects:

[0023] 1. When a PCBA board is detected to be faulty, the flip table is controlled to flip so that the PCBA board on it falls from the top of the flip table. There is no need to manually remove the faulty PCBA board, which reduces manpower and increases efficiency.

[0024] 2. Before testing, the material transport trolley is controlled to move upward, and then the position of the PCBA board is fixed by limiting the limit gap. During the test, the test equipment can be aligned with the PCBA board, which greatly improves the accuracy of the test.

[0025] 3. When the needle plate is downwardly inspecting the PCBA board on the flip table, the cleaning roller can clean the needle head at the bottom of the needle plate, and the brush plate can clean the surface of the PCBA board, which can improve the inspection accuracy and avoid the problem of reduced efficiency caused by manual removal of faulty boards. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention;

[0027] Figure 2 It is a schematic cross-sectional view of the overall structure of the present invention;

[0028] Figure 3 It is a three-dimensional schematic diagram of the track structure of the present invention;

[0029] Figure 4 It is a bottom-up stereoscopic schematic diagram of the track structure of the present invention;

[0030] Figure 5 It is a three-dimensional schematic diagram of the belt structure of the present invention;

[0031] Figure 6For the present invention Figure 4 A schematic diagram of the enlarged structure in the middle;

[0032] Figure 7 It is a three-dimensional schematic diagram of the structure of the material transport trolley of the present invention;

[0033] Figure 8 This is a schematic diagram of the turning table structure of the present invention;

[0034] Fig. 9 It is a three-dimensional schematic diagram of the driving column structure of the present invention;

[0035] Fig.10 It is a front perspective schematic diagram of the needle plate structure of the present invention;

[0036] Fig.11 It is a three-dimensional schematic diagram of the back of the needle plate structure of the present invention.

[0037] In the figure: 1. casing; 2. track; 21. limiting notch; 221. driving column; 222. driving slot; 223. second torsion spring; 224. brush plate; 31. frame; 32. turning table; 33. first torsion spring; 34. through-hole; 41. first cylinder; 42. lifting rod; 43. lifting plate; 44. first spring; 45. push plate; 51. motor; 52. belt; 53. screw rod; 54. support plate; 55. first guide rail; 6. window; 71. second cylinder; 72. needle plate; 721. second guide rail; 722. slider; 723. cleaning roller; 724. second spring; 725. guide rod; 726. guide wheel; 727. pull rope; 73. boss; 8. discharge port; 9. guide plate. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] Refer to the attached Figure 1-11, a PCBA board function testing device, including a casing 1, wherein an I-shaped track 2 is symmetrically arranged in the casing 1, and a material transport trolley moving along the direction thereof is arranged between the symmetrically arranged tracks 2 for carrying and transporting the PCBA board. The material transport trolley includes a frame 31 moving along the track 2, and driving wheels are arranged at the four corners of the bottom of the frame 31, and the four driving wheels are respectively arranged on the bottom edges of the tracks 2 on both sides. By controlling the rotation of the driving wheels, the material transport trolley moves on the track 2, and a turning table 32 for carrying the PCBA board is rotatably connected to the top of the frame 31, and a receiving groove for receiving the PCBA is arranged on the top of the turning table 32. The bottom of the turning table 32 is connected to the frame 31 through a first torsion spring 33, so that the turning table 32 is horizontally placed on the top of the frame 31 under a stress-free state. When a fault is detected on the PCBA board on the top of the turning table 32, the turning table 32 is controlled to turn over, so that the PCBA board on it falls off from the top of the turning table 32, and there is no need to manually take out the faulty PCBA board, thereby reducing manpower and increasing efficiency.

[0040] A first cylinder 41 is provided in the housing 1, and a lifting rod 42 is provided at the top output end of the first cylinder 41. A through hole 34 is opened inside the frame 31 corresponding to the lifting rod 42, so that the lifting rod 42 pushes the turning table 32 to turn through the through hole 34 during the upward movement. When a PCBA board is detected to be faulty, the first cylinder 41 is started, and the lifting rod 42 moves upward and pushes the turning table 32 to turn through the through hole 34, so that the PCBA board falls from the top of the turning table 32, thereby achieving the effect of automatically removing the faulty board.

[0041] A lifting plate 43 is provided on the outer wall of the lifting rod 42, and push plates 45 are connected to the tops of both sides of the lifting plate 43 through two first springs 44. A limiting notch 21 for upward movement is opened at the top of the frame 31 corresponding to the track 2, so that the top of the frame 31 moves upward to the limiting notch 21. When detecting the PCBA board, the first cylinder 41 is controlled to work first. At this time, the lifting rod 42 drives the lifting plate 43 to move upward. At this time, the push plate 45 will push the frame 31 upward under the push of the first spring 44. At this time, the material transport trolley moves upward as a whole. At this time, the top of the frame 31 is just stuck in the limiting notch 21, and the top of the lifting rod 42 has not yet contacted the bottom of the turning table 32. At this time, the PCBA board is detected. During the detection, the position of the PCBA board is fixed by limiting the limiting notch 21, so that the test equipment can be aligned with the PCBA board, which greatly improves the detection accuracy.

[0042] The two side edges along the track 2 at the bottom of the frame 31 are provided with outwardly extending skirts to prevent the frame 31 from leaving the track 2 through the limit notch 21 during the upward movement. When the PCBA board fails, the first cylinder 41 controls the lifting rod 42 and the lifting plate 43 to continue to move upward. Since the bottom of the frame 31 is provided with an outwardly extending skirt, it will be stuck at the bottom of the track 2 after rising a certain distance and cannot move upward anymore. At this time, the lifting rod 42 continues to move upward to push the turning table 32 to turn over, so that the PCBA board automatically falls from the top of the turning table 32.

[0043] A second cylinder 71 is provided at the top of the casing 1, and a needle plate 72 for testing is provided at the bottom output end of the second cylinder 71. I-shaped second guide rails 721 are symmetrically provided on both sides of the needle plate 72. A slider 722 is slidably connected to each second guide rail 721. A rotatable cleaning roller 723 is provided between the sliders 722 on both sides. The bristles on the outer wall of the cleaning roller 723 contact the needle head at the bottom of the needle plate 72. Before testing, the slider 722 is controlled to move along the second guide rail 721 so that the bristles of the cleaning roller 723 clean the needle head at the bottom of the needle plate 72 to avoid impurities on the needle head affecting the accuracy of the test. During the test, the second cylinder 71 works to drive the needle plate 72 to move downward and test the PCBA board on the flip table 32.

[0044] One end of the second guide rail 721 extends out of the needle plate 72, so that the cleaning roller 723 can move out of the bottom of the needle plate 72 to prevent the cleaning roller 723 from affecting the relative alignment of the two when the needle plate 72 detects the PCBA. The bottom end of the second guide rail 721 extending out of the needle plate 72 is provided with a guide wheel 726, and the housing 1 is provided with a pair of pull ropes 727, which pass through the bottom of the guide wheel 726 and are connected to the slider 722. The slider 722 is connected to the second guide rail 721 through a second spring 724, so that the slider 722 is reset when no force is applied. A guide rod 725 is provided inside to penetrate the slider 722, and the second spring 724 is sleeved on the outer wall of the guide rod 725 to prevent the second spring 724 from deforming outward during compression. During detection, the second cylinder 71 works, and the needle plate 72 moves downward relative to the connection position between the housing 1 and the pull rope 727. At this time, the pull rope 727 pulls the slider 722 to move on the second guide rail 721, further extending the cleaning roller 723 in the direction of the second guide rail 721, and cleaning the needle head at the bottom of the needle plate 72. There is no need to clean it before detection, which greatly improves the detection efficiency.

[0045] A boss 73 is provided on one side of the needle plate 72, and a rotatable driving column 221 is provided on the top of the track 2. A driving groove 222 cooperating with the boss 73 is opened around the outer wall of the driving column 221, so that the driving column 221 rotates during the up and down movement of the boss 73. The bottom of the driving column 221 is connected to the top of the track 2 through a second torsion spring 223. A brush plate 224 is provided on one side of the driving column 221, and bristles are provided at the bottom of the brush plate 224 to cooperate with cleaning the top of the PCBA board. When the needle plate 72 moves downward, the boss 73 will enter the driving groove 222 and control the driving column 221 to rotate through the driving groove 222. At this time, the driving column 221 drives the brush plate 224 to rotate, and further enables the bristles at the bottom of the brush plate 224 to clean the top of the PCBA board to avoid impurities on the top of the PCBA board affecting the cleaning effect.

[0046] Furthermore, the driving slot 222 includes two upper and lower vertical slots and a middle curved slot, and the angle between the two vertical slots is between 90° and 180°, so that the brush plate 224 can move out of the range of the top of the PCBA board during rotation to avoid affecting the detection of the PCBA board.

[0047] A motor 51, a belt 52 and a pair of screw rods 53 are provided in the casing 1. The motor 51 drives the pair of screw rods 53 to rotate synchronously through the belt 52. The outer wall of each screw rod 53 is threadedly connected to a pair of support plates 54. The top of the support plate 54 on the same side is connected to the bottom of the same track 2, and the bottom of the support plate 54 on the opposite side is slidably connected to the first guide rail 55. The motor 51 is started, and the motor 51 drives the pair of screw rods 53 to rotate synchronously through the belt 52, further making the support plates 54 on both sides move relative to or oppositely. At this time, the distance between the tracks 2 on both sides can be adjusted, so as to facilitate the transportation of PCBA boards of different models as needed.

[0048] Windows 6 are provided on both sides of the housing 1 along the track 2 to allow the material transport trolley to move out of the housing 1 and facilitate the material transport trolley to transport the PCBA board out of the housing 1.

[0049] A discharge port 8 is provided on the side of the casing 1 corresponding to the turning of the turning table 32, and a guide plate 9 is provided at the bottom of the discharge port 8, so that the PCBA board dropped in the turning table 32 can slide out of the casing 1. When the turning table 32 is turned over, the PCBA board falls onto the guide plate 9 through the discharge port 8. The top of the guide plate 9 is tilted, so that the PCBA board slides out of the casing 1 through the top of the guide plate 9, and the operation of taking out the faulty PCBA board can be completed without manual operation.

[0050] A PCBA board function testing method, the process steps are as follows:

[0051] S1, place the PCBA board on the turning table 32 on the top of the material transport trolley, and then control the material transport trolley to move on the track 2 to move it to a suitable position below the needle plate 72 inside the housing 1;

[0052] S2. Clean the surface of the PCBA board and the needle plate 72 on the top of the material transport trolley to remove surface impurities to prevent the impurities from affecting the accuracy of the detection;

[0053] S3, controlling the needle plate 72 to move toward the PCBA board and inspecting the PCBA board;

[0054] S4, after the inspection is completed, if the PCBA board has a fault, the first cylinder 41 is controlled to start, so that the lifting rod 42 rises, and pushes the flip table 32 to flip, so that the PCBA board on it falls down, and then slides out of the housing 1 through the guide plate 9. If the PCBA board has no fault, the moving trolley drives the PCBA board to continue to move to the next operation link.

[0055] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0056] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A PCBA board function test device, comprising a housing (1), characterized in that: I-shaped tracks (2) are symmetrically arranged in the housing (1), and a material transport trolley moving along the tracks (2) is symmetrically arranged between the tracks (2). The material transport trolley includes a frame (31) moving along the track (2), and a turning table (32) for carrying a PCBA board is rotatably connected to the top of the frame (31), and the bottom of the turning table (32) is connected to the frame (31) through a first torsion spring (33), so that the turning table (32) is horizontally placed on the top of the frame (31) in a non-stressed state.

2. A PCBA board function test device as claimed in claim 1, characterized in that: A first cylinder (41) is provided in the casing (1); a lifting rod (42) is provided at the top output end of the first cylinder (41); a lifting plate (43) is provided on the outer wall of the lifting rod (42); the tops of both sides of the lifting plate (43) are connected to push plates (45) via two first springs (44); a through hole (34) is provided inside the frame (31) corresponding to the lifting rod (42), so that the lifting rod (42) can push the turning platform (32) to turn over through the through hole (34) during the upward movement.

3. A PCBA board function test device as claimed in claim 2, characterized in that: The track (2) is provided with a limiting notch (21) at the top of the corresponding frame (31) for upward movement, so that the top of the frame (31) moves upward into the limiting notch (21), and the bottom of the frame (31) is provided with outwardly extending skirts on two side edges along the track (2) to prevent the frame (31) from leaving the track (2) through the limiting notch (21) during the upward movement.

4. A PCBA board function test device as claimed in claim 1, characterized in that: A second cylinder (71) is provided at the top of the housing (1), a needle plate (72) for testing is provided at the bottom output end of the second cylinder (71), I-shaped second guide rails (721) are symmetrically provided on both sides of the needle plate (72), each of the second guide rails (721) is slidably connected with a slider (722), a rotatable cleaning roller (723) is provided between the sliders (722) on both sides, and the bristles on the outer wall of the cleaning roller (723) are in contact with the needle head at the bottom of the needle plate (72).

5. A PCBA board function test device as claimed in claim 4, characterized in that: One end of the second guide rail (721) extends out of the needle plate (72) so that the cleaning roller (723) can move out of the bottom of the needle plate (72); the bottom end of the second guide rail (721) extending out of the needle plate (72) is provided with a guide wheel (726); the housing (1) is provided with a pair of pull ropes (727); the pull ropes (727) pass through the bottom of the guide wheel (726) and are connected to the slider (722); the slider (722) is connected to the second guide rail (721) through a second spring (724) so ​​that the slider (722) is reset when no force is applied; a guide rod (725) penetrating the slider (722) is provided in the second guide rail (721); the second spring (724) is sleeved on the outer wall of the guide rod (725) to prevent the second spring (724) from deforming outward during compression.

6. A PCBA board function test device as claimed in claim 5, characterized in that: A boss (73) is provided on one side of the needle plate (72), and a rotatable driving column (221) is provided on the top of the track (2). A driving groove (222) cooperating with the boss (73) is provided around the outer wall of the driving column (221), so that the driving column (221) rotates during the up and down movement of the boss (73). The bottom of the driving column (221) is connected to the top of the track (2) through a second torsion spring (223). A brush plate (224) is provided on one side of the driving column (221), and bristles are provided at the bottom of the brush plate (224) to cooperate with cleaning the top of the PCBA board.

7. A PCBA board function test device as claimed in claim 1, characterized in that: A motor (51), a belt (52) and a pair of screw rods (53) are arranged in the housing (1); the motor (51) drives the pair of screw rods (53) to rotate synchronously via the belt (52); the outer wall of each screw rod (53) is threadedly connected to a pair of support plates (54); the top of the support plate (54) on the same side is connected to the bottom of the same track (2); and the bottom of the support plate (54) on the opposite side is slidably connected to the first guide rail (55).

8. A PCBA board function test device as claimed in claim 1, characterized in that: The casing (1) is provided with windows (6) on both sides along the direction of the track (2) to allow the material transport trolley to move out of the casing (1).

9. A PCBA board function test device as claimed in claim 1, characterized in that: A discharge port (8) is provided on the corresponding side of the housing (1) and the turning platform (32), and a guide plate (9) is provided at the bottom of the discharge port (8) so that the PCBA board dropped from the turning platform (32) can slide out of the housing (1).

10. A PCBA board function test method, comprising using a PCBA board function test device according to any one of claims 4 to 9, characterized in that: The process steps are as follows: S1, placing the PCBA board on the turning table (32) on the top of the material transport trolley, and then controlling the material transport trolley to move on the track (2) to move it to a suitable position inside the housing (1); S2, cleaning the surface of the PCBA board and the needle plate (72) on the top of the material transport vehicle to remove surface impurities; S3, controlling the needle plate (72) to move toward the PCBA board and inspecting the PCBA board; S4, after the inspection is completed, if the PCBA board is faulty, the turning table (32) is controlled to turn over so that the PCBA board on it falls down; if the PCBA board is not faulty, the moving trolley drives the PCBA board to continue moving to the next operation link.

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