PCB (Printed Circuit Board) detection jig

Abstract

The utility model relates to the technical field of clamping appliances, in particular to a PCB (Printed Circuit Board) detection jig. Comprising a test base and a mounting plate fixed to one side of the top of the test base, guide rods are slidably connected to the inner sides of the two ends of one side of the mounting plate and fixedly connected with the test base, pressing plates are slidably connected to the outer sides of the guide rods located at the two ends, and a wrench is rotatably connected to the top of the side, close to the guide rods, of the mounting plate. The two ends of the bottom of the wrench are rotationally connected with connecting frames, and the bottoms of the connecting frames are rotationally connected with pressing rods. According to the utility model, through the arrangement of the driving mechanism and the positioning mechanism, the PCB can be positioned in the horizontal direction while the pressing plate is pressed downwards, so that the PCB is not easy to deviate, and the detection precision is higher; and meanwhile, through the structural design of the driving mechanism and the positioning mechanism, adaptive adjustment can be performed according to the sizes of different PCBs during use, so that the PCBs of different sizes can be detected.

Description

Technical Field

[0001] The utility model relates to the technical field of clamping devices, in particular to a PCB board detection fixture. Background Art

[0002] With the development of the modern electronics industry, the demand for PCBA boards is getting higher and higher. In order to improve the quality of electronic products, the quality of PCBA boards, as important components, also needs to be guaranteed. Therefore, PCBA boards need to be tested. However, in the prior art, the use of jigs and fixtures for testing PCBA boards is very inconvenient. Testing requires frequent replacement of PCBA boards, and the PCBA boards need to be repeatedly removed and clamped on the carrier. When clamping, the PCBA boards need to be clamped and tested on multiple sides, which affects the testing efficiency.

[0003] In addition, some existing detection instruments are fixed in style and cannot be adjusted according to the size of different PCBA boards, and are prone to offset during the clamping process.

[0004] To this end, we designed a PCB board inspection fixture to provide another technical solution to the above technical problems. Utility Model Content

[0005] Based on this, it is necessary to provide a solar photovoltaic panel cleaning device that can be spliced ​​or disassembled for use in order to address the above technical problems.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A PCB board detection fixture comprises a test base and a mounting plate fixed on one side of the top of the test base, wherein the inner sides of both ends of one side of the mounting plate are slidably connected with guide rods, the guide rods are fixedly connected to the test base, and the outer sides of the guide rods at both ends are slidably connected with pressure plates, the top of the mounting plate close to one side of the guide rod is rotatably connected with a wrench, the two ends of the bottom of the wrench are rotatably connected with a connecting frame, the bottom of the connecting frame is rotatably connected with a pressure rod, the pressure rod is slidably connected to the mounting plate, the bottom of the pressure rod is connected to the pressure plate, the inner sides of both ends of the pressure plate are provided with driving mechanisms, and the two ends of the top of the test base are provided with positioning mechanisms.

[0008] As a preferred embodiment of the PCB board detection fixture provided by the utility model, a plurality of top columns are fixed on the top of the test base and below the pressure plate for supporting the PCB board, a plurality of clamping columns are fixed on the bottom of the pressure plate for clamping and positioning the PCB board, a plurality of side positioning columns are fixed on the top of the test base and on one side of the plurality of top columns, and a plurality of switches are arranged on the side of the top of the test base away from the mounting plate.

[0009] As a preferred embodiment of the PCB board detection fixture provided by the utility model, the positioning mechanism includes side positioning columns fixed on the inner sides of both sides of one end of the test base, the tops of the side positioning columns located on both sides of one end are slidably connected with first mounting blocks, and the ends of the first mounting blocks located at both ends that are close to each other are provided with positioning plates, and a plurality of first springs are provided between the positioning plate and the first mounting block located at the same end, and the two ends of the first spring are fixedly connected to the corresponding positioning plates and the first mounting blocks, respectively.

[0010] As a preferred embodiment of the PCB board detection fixture provided by the utility model, adjustment blocks are slidably connected to the inner sides of both sides of the top of the first mounting block, and the inner side of the adjustment block away from the end of the first mounting block is rotatably connected to a roller, the inner side of the adjustment block is threadedly connected to a first threaded rod, and the end of the first threaded rod away from the adjustment block passes through the first mounting block and is fixed with a first adjusting knob, an accommodating groove is provided on the inner side of the top of the first mounting block, the first adjusting knob is located on the inner side of the accommodating groove, and a plurality of scale lines are provided on the top of the first mounting block and on both sides of the adjustment block.

[0011] As a preferred embodiment of the PCB board detection fixture provided by the utility model, a second mounting block is fixed to one end of the top of the side positioning column away from the first mounting block, a second adjusting knob is rotatably connected to the inner side of the second mounting block, an adjusting cylinder is threadedly connected to the inner side of the second adjusting knob, a second spring is arranged on the inner side of the adjusting cylinder, and both ends of the second spring are respectively connected to the adjusting cylinder and the first mounting block;

[0012] A plurality of limit blocks are fixedly connected to the two ends of the second mounting block and located on the outer circumference of the adjusting cylinder. A plurality of limit grooves matching the limit blocks are opened on the outer circumference of the adjusting cylinder. The limit blocks are slidably connected to the adjusting cylinder by cooperating with the corresponding limit grooves.

[0013] As a preferred embodiment of the PCB board detection fixture provided by the utility model, the driving mechanism includes mounting grooves provided on the inner sides of both ends of the pressing plate, the inner sides of the mounting grooves are slidably connected with a support block, the two sides inside the support block are slidably connected with guide strips, one side of the guide strip is provided with a scale line group, the bottoms of the guide strips on both sides are fixedly connected with a driving top block, the bottoms of the driving top blocks are provided with an inclined table, the rollers are rollingly connected to the driving top blocks through the inclined table, the top of the driving top block is rotatably connected with a second threaded rod, the second threaded rod is threadedly connected to the support block, the top of the second threaded rod passes through the support block and is fixedly connected with a fourth adjusting knob, the inner side of the support block is threadedly connected with a third threaded rod, one end of the third threaded rod passes through the pressing plate and is fixed with a third adjusting knob, and the third threaded rod is rotatably connected to the pressing plate.

[0014] It can be seen without a doubt that the above-mentioned technical solution of the present application can definitely solve the technical problem to be solved by the present application.

[0015] At the same time, through the above technical solutions, the utility model has at least the following beneficial effects:

[0016] The utility model provides a PCB board detection jig. Through the arrangement of a driving mechanism and a positioning mechanism, the PCB board can be positioned in a horizontal direction when a pressing plate is pressed down, so that it is not easy to deviate, thereby achieving higher detection accuracy. At the same time, through the structural design of the driving mechanism and the positioning mechanism, the jig can be adaptively adjusted according to the sizes of different PCB boards during use, so as to detect PCB boards of different sizes, and can be fine-tuned and adjusted for larger size differences according to use requirements, thereby greatly improving adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the positioning mechanism of the utility model;

[0020] Figure 3 It is a schematic diagram of the structure of the adjusting cylinder, the second spring and the second adjusting knob of the utility model;

[0021] Figure 4 It is a structural schematic diagram of the driving mechanism of the utility model.

[0022] In the figure: 1. test base; 2. mounting plate; 3. pressure plate; 4. guide rod; 5. wrench; 6. connecting frame; 7. pressure rod; 8. clamping column; 9. driving mechanism; 10. positioning mechanism; 11. switch; 12. top column; 13. side positioning column; 14. first mounting block; 15. positioning plate; 16. first spring; 17. receiving groove; 18. adjusting block; 19. roller; 20. first threaded rod; 21. first adjusting knob; 22. adjusting cylinder; 23. second spring; 24. second mounting block; 25. second adjusting knob; 26. limit block; 27. limit groove; 28. driving top block; 29. ​​guide strip; 30. second threaded rod; 31. support block; 32. second threaded rod; 33. third adjusting knob; 34. fourth adjusting knob. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0024] Reference Figure 1-4 A PCB board detection fixture comprises a test base 1 and a mounting plate 2 fixed on one side of the top of the test base 1, guide rods 4 are slidably connected to the inner sides of both ends of one side of the mounting plate 2, the guide rods 4 are fixedly connected to the test base 1, and pressure plates 3 are slidably connected to the outer sides of the guide rods 4 at both ends, a wrench 5 is rotatably connected to the top of the mounting plate 2 near the guide rod 4, connecting frames 6 are rotatably connected to the two ends of the bottom of the wrench 5, a pressure rod 7 is rotatably connected to the bottom of the connecting frame 6, the pressure rod 7 is slidably connected to the mounting plate 2, the bottom of the pressure rod 7 is connected to the pressure plate 3, a driving mechanism 9 is arranged on the inner sides of both ends of the pressure plate 3, and a positioning mechanism 10 is arranged on both ends of the top of the test base 1.

[0025] Reference Figure 1 A plurality of top columns 12 are fixed on the top of the test base 1 and below the pressing plate 3 for supporting the PCB board, a plurality of clamping columns 8 are fixed on the bottom of the pressing plate 3 for clamping and positioning the PCB board, a plurality of side positioning columns 13 are fixed on the top of the test base 1 and on one side of the plurality of top columns 12, and a plurality of switches 11 are arranged on the side of the top of the test base 1 away from the mounting plate 2;

[0026] Specifically, when in use, first place the PCB board on the top of the plurality of top pillars 12, and make its side against the side positioning pillars 13, then manually pull down the wrench 5, so that the wrench 5 drives the connecting frame 6 to move downward, and then drives the pressing plate 3 to move downward. In this process, the mounting plate 2 guides and limits the pressing plate 3 by limiting the guide rod 4. When the pressing plate 3 is pressed down to an appropriate position, the clamping pillar 8 abuts against the top of the PCB board and clamps it, and at the same time positions the PCB board to be inspected from both ends. When the positioning work is completed, the switch 11 is immediately pressed to inspect the PCB board.

[0027] It should be noted that the electronic devices used for detection and their installation settings are well-known technologies in the field and will not be described in detail here. In this embodiment, the detection component is located on the inner side of the test base 1, and the detection head is arranged below the PCB board. When the clamping column 8 presses the PCB board, the detection head abuts against the PCB board to detect it.

[0028] Reference Figure 2 The positioning mechanism 10 includes side positioning columns 13 fixed on the inner sides of both sides of one end of the test base 1, and the tops of the side positioning columns 13 on both sides of one end are slidably connected with first mounting blocks 14, and the first mounting blocks 14 at both ends are close to each other. A positioning plate 15 is provided at one end, and a plurality of first springs 16 are provided between the positioning plate 15 and the first mounting block 14 at the same end. The two ends of the first spring 16 are fixedly connected to the corresponding positioning plate 15 and the first mounting block 14, respectively. Specifically, the side positioning columns 13 guide the displacement movement of the first mounting block 14, and the positioning plate 15 is driven by the first mounting block 14 to approach the PCB board to clamp and position the PCB board to be tested, and the positioning plate 15 and the first spring 16 are provided to avoid hard contact between the first mounting block 14 and the PCB board to be tested, thereby preventing damage to the PCB board.

[0029] Reference Figure 2, the inner sides of both sides of the top of the first mounting block 14 are slidably connected with adjusting blocks 18, and the inner side of the adjusting block 18 away from the end of the first mounting block 14 is rotatably connected with a roller 19, and the inner side of the adjusting block 18 is threadedly connected with a first threaded rod 20, and the end of the first threaded rod 20 away from the adjusting block 18 passes through the first mounting block 14 and is fixed with a first adjusting knob 21. A receiving groove 17 is provided on the inner side of the top of the first mounting block 14, and the first adjusting knob 21 is located on the inner side of the receiving groove 17. A plurality of scale lines are provided on the top of the first mounting block 14 and on both sides of the adjusting block 18. When in use, the staff can drive the corresponding first threaded rod 20 to rotate by rolling the first adjusting knob 21 by hand, thereby driving the adjusting block 18 to move on the inner side of the first mounting block 14, thereby adjusting the position of the roller 19, and the displacement of the adjusting block 18 can be accurately adjusted by setting the scale lines, thereby improving the positioning accuracy.

[0030] Reference Figure 2-3 A second mounting block 24 is fixed to one end of the top of the side positioning column 13 away from the first mounting block 14, a second adjusting knob 25 is rotatably connected to the inner side of the second mounting block 24, an adjusting cylinder 22 is threadedly connected to the inner side of the second adjusting knob 25, a second spring 23 is arranged on the inner side of the adjusting cylinder 22, and both ends of the second spring 23 are respectively connected to the adjusting cylinder 22 and the first mounting block 14;

[0031] The two ends of the second mounting block 24 are fixedly connected with a plurality of limit blocks 26 located on the outer periphery of the adjusting cylinder 22. The outer periphery of the adjusting cylinder 22 is provided with a plurality of limit grooves 27 adapted to the limit blocks 26. The limit blocks 26 are slidably connected with the adjusting cylinder 22 by cooperating with the corresponding limit grooves 27. Specifically, the second mounting block 24 guides the second spring 23 through the cooperation between the limit blocks 26 and the limit grooves 27. The second spring 23 is a tension spring. When the first mounting block 14 is subjected to an external force and moves in a direction away from the adjusting cylinder 22, the second spring 23 undergoes elastic deformation and stretching. When the first mounting block 14 is not subjected to an external force, the second spring 23 drives the first mounting block 14 to reset by its own elastic force. When in use, the staff can drive the adjusting cylinder 22 to move by rolling the second adjusting knob 25 by hand, thereby adjusting the position of the adjusting cylinder 22. The position of the second spring 23 is adjusted by adjusting the position of the adjusting cylinder 22, thereby adjusting the initial position of the first mounting block 14, so as to adapt to PCB boards of different sizes.

[0032] In this embodiment, the position of the first mounting block 14 is adjusted by adjusting the adjustment tube 22 through the second adjustment knob 25. This adjustment method can adjust the position of the first mounting block 14 within a larger range to accommodate PCB boards to be tested with larger size differences.

[0033] Reference Figure 4The driving mechanism 9 includes mounting grooves provided on the inner sides of both ends of the pressing plate 3, the inner sides of the mounting grooves are slidably connected with support blocks 31, the two sides of the support block 31 are slidably connected with guide strips 29, one side of the guide strips 29 is provided with a scale line group, the bottoms of the guide strips 29 on both sides are fixedly connected with a driving top block 28, the bottom of the driving top block 28 is provided with an inclined table, the inclination angle of the inclined table is 10-70 degrees for the positioning mechanism, in this embodiment, the inclination angle of the inclined table is 45 degrees, so as to facilitate the adjustment of the test fixture, the roller 19 is rollingly connected with the driving top block 28 through the inclined table, the top of the driving top block 28 is rotatably connected with a second threaded rod 30, the second threaded rod 30 is threadedly connected with the support block 31, the top of the second threaded rod 30 passes through the support block 31 and is fixedly connected with a fourth The adjusting knob 34, the inner side of the support block 31 is threadedly connected to the third threaded rod 32, one end of the third threaded rod 32 passes through the pressure plate 3 and is fixed with a third adjusting knob 33, the third threaded rod 32 is rotatably connected to the pressure plate 3. During specific use, manually rotating the third adjusting knob 33 can drive the support block 31 to move in the horizontal direction, thereby adjusting the horizontal position of the driving top block 28, and manually rotating the fourth adjusting knob 34 can drive the driving top block 28 to move in the vertical direction, thereby adjusting the height position of the driving top block 28. In this process, the support block 31 limits and guides the driving top block 28 through the guide bar 29, and the setting of the scale line group facilitates the accurate observation of the height position change of the driving top block 28, thereby facilitating the accurate height position adjustment of the driving top block 28.

[0034] The use process of a PCB board detection fixture provided by the utility model is as follows:

[0035] When in use, first place the PCB board on the top of several top columns 12, and make its side against the side positioning column 13, then manually pull down the wrench 5, so that the wrench 5 drives the connecting frame 6 to move downward, and then drives the pressing plate 3 to move downward. In this process, the mounting plate 2 guides and limits the pressing plate 3 by limiting the guide rod 4. When the pressing plate 3 is pressed down to an appropriate position, the clamping column 8 abuts against the top of the PCB board and presses it. When the pressing plate 3 is pressed down, it will drive the driving top block 28 to move downward. When the driving top block 28 contacts the roller 19, pressure is applied to the roller 19 through the tilting table. At this time, the driving top block 28 continues to move downward, driving the roller 19 to move horizontally, thereby driving the first mounting block 14 and the positioning plate 15 to move horizontally, so as to clamp and position the PCB board to be tested.

[0036] When it is necessary to detect PCB boards with small size differences, it is only necessary to fine-tune the position of the first mounting block 14. At this time, it is only necessary to manually rotate the first adjusting knob 21 to drive the adjusting block 18 and the roller 19 to perform displacement movement within a small range, and then adaptively adjust the height position of the driving top block 28. The height position of the driving top block 28 can be adjusted by rotating the fourth adjusting knob 34.

[0037] When it is necessary to detect PCB boards with large size differences, it is sufficient to adjust the initial position of the first mounting block 14. By rolling the second adjusting knob 25 by hand, the adjusting cylinder 22 can be driven to move, thereby adjusting the position of the adjusting cylinder 22. The position of the second spring 23 is adjusted by adjusting the position of the adjusting cylinder 22, thereby adjusting the initial position of the first mounting block 14. After adjusting the first mounting block 14, the horizontal position of the driving top block 28 can be adaptively adjusted. By turning the third adjusting knob 33, the driving top block 28 can be driven to move horizontally through the third threaded rod 32 and the support block 31. If precise adjustment is required, fine-tuning can be performed after adjusting the initial positions of the first mounting block 14 and the driving top block 28.

[0038] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A PCB board inspection fixture, It is characterized in that The invention comprises a test base (1) and a mounting plate (2) fixed on one side of the top of the test base (1); the inner sides of both ends of one side of the mounting plate (2) are slidably connected with guide rods (4); the guide rods (4) are fixedly connected to the test base (1); the outer sides of the guide rods (4) at both ends are slidably connected with pressure plates (3); the top of the mounting plate (2) close to the guide rod (4) is rotatably connected with a wrench (5); the two ends of the bottom of the wrench (5) are rotatably connected with a connecting frame (6); the bottom of the connecting frame (6) is rotatably connected with a pressure rod (7); the pressure rod (7) is slidably connected to the mounting plate (2); the bottom of the pressure rod (7) is connected to the pressure plate (3); the inner sides of both ends of the pressure plate (3) are provided with driving mechanisms (9); and the two ends of the top of the test base (1) are provided with positioning mechanisms (10).

2. A PCB board detection fixture according to claim 1, It is characterized in that A plurality of top columns (12) are fixed on the top of the test base (1) and located below the pressure plate (3) for supporting the PCB board; a plurality of clamping columns (8) are fixed on the bottom of the pressure plate (3) for clamping and positioning the PCB board; a plurality of side positioning columns (13) are fixed on the top of the test base (1) and located on one side of the plurality of top columns (12); and a plurality of switches (11) are arranged on the side of the top of the test base (1) away from the mounting plate (2).

3. A PCB board detection fixture according to claim 1, It is characterized in that The positioning mechanism (10) comprises side positioning columns (13) fixed to the inner sides of both sides of one end of the test base (1); the tops of the side positioning columns (13) located on both sides of one end are slidably connected with first mounting blocks (14); a positioning plate (15) is provided at one end of the first mounting blocks (14) located at both ends close to each other; a plurality of first springs (16) are provided between the positioning plate (15) and the first mounting block (14) located at the same end; and the two ends of the first spring (16) are fixedly connected to the corresponding positioning plate (15) and the first mounting block (14), respectively.

4. A PCB board detection fixture according to claim 3, It is characterized in that Adjustment blocks (18) are slidably connected to the inner sides of both sides of the top of the first mounting block (14); a roller (19) is rotatably connected to the inner side of one end of the adjustment block (18) away from the first mounting block (14); a first threaded rod (20) is threadedly connected to the inner side of the adjustment block (18); one end of the first threaded rod (20) away from the adjustment block (18) passes through the first mounting block (14) and is fixed with a first adjustment knob (21); a receiving groove (17) is provided on the inner side of the top of the first mounting block (14); the first adjustment knob (21) is located on the inner side of the receiving groove (17); and a plurality of scale lines are provided on the top of the first mounting block (14) and on both sides of the adjustment block (18).

5. A PCB board detection fixture according to claim 3, It is characterized in that A second mounting block (24) is fixed to one end of the top of the side positioning column (13) away from the first mounting block (14); a second adjusting knob (25) is rotatably connected to the inner side of the second mounting block (24); an adjusting cylinder (22) is threadedly connected to the inner side of the second adjusting knob (25); a second spring (23) is arranged on the inner side of the adjusting cylinder (22); two ends of the second spring (23) are respectively connected to the adjusting cylinder (22) and the first mounting block (14); A plurality of limit blocks (26) are fixedly connected at both ends of the second mounting block (24) and located on the outer circumference of the adjusting cylinder (22); a plurality of limit grooves (27) adapted to the limit blocks (26) are provided on the outer circumference of the adjusting cylinder (22); and the limit blocks (26) are slidably connected to the adjusting cylinder (22) by cooperating with the corresponding limit grooves (27).

6. A PCB board detection fixture according to claim 4, It is characterized in that The driving mechanism (9) comprises mounting grooves provided on the inner sides of both ends of the pressing plate (3), the inner sides of the mounting grooves are slidably connected with support blocks (31), the two sides of the support blocks (31) are slidably connected with guide bars (29), one side of the guide bars (29) is provided with a scale line group, the bottoms of the guide bars (29) on both sides are fixedly connected with driving top blocks (28), the bottoms of the driving top blocks (28) are provided with inclined tables, and the rollers (19) are rollingly connected with the driving top blocks (28) through the inclined tables. The top of the driving top block (28) is rotatably connected to a second threaded rod (30), the second threaded rod (30) is threadedly connected to the support block (31), the top of the second threaded rod (30) passes through the support block (31) and is fixedly connected to a fourth adjusting knob (34), the inner side of the support block (31) is threadedly connected to a third threaded rod (32), one end of the third threaded rod (32) passes through the pressure plate (3) and is fixedly connected to a third adjusting knob (33), and the third threaded rod (32) is rotatably connected to the pressure plate (3).

Images