A bga tension testing device

Abstract

The utility model relates to BGA device test technical field discloses a BGA tension testing device, including machine base, the fixed junction of machine base top rear side has the machine support column, the inner wall rotation of machine support column is connected with the pivot, the pivot is connected with digital pressure gauge through the lifting assembly, the digital pressure gauge bottom is provided with the pull ring, the pull ring outer wall is provided with the clamping assembly, the machine base top fixed connection has the platform, the platform top fixed connection has a plurality of substrate bottom positioning column, the platform top is provided with two fixed frames, the fixed frame inner wall is provided with fixed assembly. In the utility model, can test the BGA device of different size, improve the application range of device, and through the mechanical movement design, make the stretching of substrate BGA more stable, and can automatic record tension data, replace the human work operation, make the result more can reflect the real welding strength.

Description

Technical Field

[0001] This utility model relates to the field of BGA device testing technology, and in particular to a BGA tensile testing device. Background Technology

[0002] The core connectivity reliability of BGA devices relies on the solder balls distributed in an array on their bottom. These solder balls serve a dual purpose: providing electrical connection and mechanical fixation between the chip and the substrate. During product manufacturing, transportation, and use, BGA solder balls may experience reduced solder strength or detachment due to soldering process defects (such as cold solder joints or insufficient solder), environmental stresses (such as temperature cycling or vibration shock), or material aging. This directly affects the performance of electronic devices and can even lead to complete device failure. Therefore, accurate testing of the solder strength of BGA solder balls is a crucial step in ensuring the quality and reliability of electronic products.

[0003] When stretching using traditional manual methods (or simple devices), uneven force applied by the hand (such as sudden force or shaking) can cause the tensile force to fluctuate, resulting in unstable stress on the BGA substrate. This can even lead to the direct breakage of solder joints (instead of simulating a real failure process), making the test results inaccurate.

[0004] In response to the technical problem that traditional manual stretching can lead to inaccurate test results, this application proposes a BGA tensile testing device. Utility Model Content

[0005] The purpose of this invention is to address the inaccuracy of test results caused by manual stretching. It proposes a BGA tensile testing device that can test BGA devices of different sizes, expanding the range of applications. Through mechanical motion design, the stretching of the substrate BGA is made more stable, and the tensile data can be automatically recorded, replacing manual operation and making the results more reflective of the true soldering strength.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a BGA tensile testing device, comprising a machine base, a machine support column fixedly connected to the rear side of the top of the machine base, a rotating shaft rotatably connected to the inner wall of the machine support column, the rotating shaft being connected to a digital display pressure gauge via a lifting assembly, a pull ring provided at the bottom of the digital display pressure gauge, a clamping assembly provided on the outer wall of the pull ring, a platform fixedly connected to the top of the machine base, a plurality of substrate bottom positioning columns fixedly connected to the top of the platform, two fixing frames provided at the top of the platform, and fixing components provided on the inner wall of the fixing frames.

[0007] Furthermore, the lifting assembly includes a first bevel gear fixedly connected to the left side of the rotating shaft, a second bevel gear meshing with the outer wall of the first bevel gear, a threaded rod fixedly connected to the inner wall of the second bevel gear, and the outer wall of the threaded rod rotatably connected to the inner wall of the machine support column.

[0008] Furthermore, a slider is threadedly connected to the outer wall of the threaded rod, the outer wall of the slider is slidably connected to the inner wall of the machine support column, and the rear end of the digital display pressure gauge is fixedly connected to the front end of the slider.

[0009] Furthermore, a rocker arm is fixedly connected to the right end of the rotating shaft to drive the rotating shaft to rotate.

[0010] Furthermore, the clamping assembly includes a crossbar sleeved on the outer wall of the pull ring, with clamping plates fixedly connected to both sides of the outer wall of the crossbar, and a first fastener threadedly connected to the inner wall of the front end of each clamping plate.

[0011] Furthermore, the fixing component includes a sliding groove formed in the inner wall of the fixing frame, and movable blocks are slidably connected to both the left and right sides of the inner wall of the sliding groove, and a third fastener is threadedly connected to the inner wall of each movable block.

[0012] Furthermore, multiple threaded holes are provided on both the left and right sides of the top of the platform, and second fasteners are threadedly connected to both the left and right sides of the top of the fixing frame. The second fasteners are detachably connected to the threaded holes.

[0013] This utility model has the following beneficial effects:

[0014] 1. In this utility model, by moving the clamps on both sides on the crossbar and fixing them with the first fastener, the fixed frame on the platform can be adjusted on the platform, and the moving block can move within the fixed frame, thereby enabling the testing of BGA devices of different sizes and expanding the application range of the device.

[0015] 2. In this utility model, by rotating the rocker arm, the threaded rod rotates and drives the slider to move upward, thereby causing the digital display pressure gauge to move the substrate BGA upward. Through mechanical motion design, the stretching of the substrate BGA is made more stable, and the tensile force data can be automatically recorded, replacing manual operation and making the results more reflective of the true welding strength. Attached Figure Description

[0016] Figure 1 This is a perspective view of a BGA tensile testing device proposed in this utility model;

[0017] Figure 2 This is a cross-sectional view of the support column of the BGA tensile testing device proposed in this utility model;

[0018] Figure 3This is a schematic diagram of the pull ring of a BGA tensile testing device proposed in this utility model;

[0019] Figure 4 This is a cross-sectional view of the fixing frame of a BGA tensile testing device proposed in this utility model.

[0020] Legend:

[0021] 1. Machine base; 2. Machine support column; 3. Rocker arm; 4. Rotating shaft; 5. First bevel gear; 6. Second bevel gear; 7. Threaded rod; 8. Slider; 9. Digital pressure gauge; 10. Pull ring; 11. Crossbar; 12. Clamping plate; 13. First fastener; 14. Platform; 15. Bottom positioning post of base plate; 16. Threaded hole; 17. Fixing frame; 18. Second fastener; 19. Slide groove; 20. Moving block; 21. Third fastener. Detailed Implementation

[0022] 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.

[0023] Reference Figure 1 and Figure 2 This utility model provides an embodiment of a BGA tensile testing device, comprising a base 1, a support column 2 fixedly connected to the rear top of the base 1, a rotating shaft 4 rotatably connected to the inner wall of the support column 2, a first bevel gear 5 fixedly connected to the left side of the rotating shaft 4, a second bevel gear 6 meshing with the outer wall of the first bevel gear 5, a threaded rod 7 fixedly connected to the inner wall of the second bevel gear 6, the outer wall of the threaded rod 7 rotatably connected to the inner wall of the support column 2, a slider 8 threadedly connected to the outer wall of the threaded rod 7, the outer wall of the slider 8 slidably connected to the inner wall of the support column 2, a digital pressure gauge 9 fixedly connected to the rear end of the slider 8, and a rocker arm 3 fixedly connected to the right end of the rotating shaft 4 for driving the rotating shaft 4 to rotate.

[0024] Specifically, the hook of the digital pressure gauge 9 is connected to the corresponding area of ​​the chip of the BGA device or the solder joint to be tested, and the direction of the pulling force is ensured to be perpendicular to the plane of the solder joint to avoid test errors caused by skew. When the digital pressure gauge 9 rises, the pulling force is transmitted to the BGA chip through the digital pressure gauge 9, and the solder joint is subjected to a continuously increasing pulling force. The digital pressure gauge 9 simultaneously converts the pulling force value into a digital signal and displays the current pulling force in real time. The built-in sensor and data processing module of the digital pressure gauge 9 can instantly capture the maximum pulling force value before breakage and automatically lock the value.

[0025] Reference Figure 1 , Figure 3 and Figure 4 The digital pressure gauge 9 has a pull ring 10 at its bottom. A crossbar 11 is fitted on the outer wall of the pull ring 10. Clamping plates 12 are fixedly connected to both sides of the outer wall of the crossbar 11. The inner wall of the front end of the clamping plates 12 is threaded with a first fastener 13. The top of the machine base 1 is fixedly connected to a platform 14. Multiple base plate bottom positioning posts 15 are fixedly connected to the top of the platform 14. Two fixing brackets 17 are set at the top of the platform 14. The inner wall of the fixing bracket 17 has a sliding groove 19. The left and right sides of the inner wall of the sliding groove 19 are slidably connected to moving blocks 20. The inner wall of the moving blocks 20 is threaded with a third fastener 21. Multiple threaded holes 16 are opened on the left and right sides of the top of the platform 14. The left and right sides of the top of the fixing bracket 17 are threaded with a second fastener 18. The second fastener 18 is detachably connected to the threaded hole 16.

[0026] Specifically, the digital pressure gauge 9 is provided with a hook at the bottom. The hook is fitted inside the pull ring 10, so that the digital pressure gauge 9 is connected to the clamping plate 12. The positioning post 15 at the bottom of the substrate can support the BGA and prevent the pins at the bottom of the BGA device from touching the platform 14.

[0027] Working principle: In use, place the BGA device on the positioning post 15 at the bottom of the substrate, then remove the second fastener 18 from the mounting bracket 17 to allow the mounting bracket 17 to move. Move the two mounting brackets 17 to the two sides above the BGA device, then rotate the second fastener 18 into the threaded hole 16 on the platform 14 to fix the mounting bracket 17. Next, move the third fastener 21, causing it to slide the moving block 20 within the mounting bracket 17, moving the third fastener 21 to the four corner positions of the BGA device. Finally, rotate the third fastener 21 downwards within the moving block 20. This presses the device firmly onto the BGA component, securing it in place. Then, the clamping plate 12 is moved so that it slides on the crossbar 11 to a distance sufficient to clamp the upper part of the BGA component. The solder joints on the upper part of the BGA component are clamped by the clamping plates 12 on both sides. The first fastener 13 is then tightened to secure the clamping plate 12. The digital pressure gauge 9 is activated, and the rocker arm 3 is rotated, causing the rocker arm 3 to drive the rotating shaft 4 to rotate, which in turn drives the first bevel gear 5 to rotate. The first bevel gear 5 then drives the second bevel gear 6 to rotate, which in turn drives the threaded rod 7 to rotate. The threaded rod 7 then drives the slider 8 to move upward, causing the digital pressure gauge 9 to move upward and stretch the upper part of the BGA component until the solder joints on the upper part of the BGA component detach, thus allowing the solder strength to be tested.

[0028] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A BGA tensile testing device, characterized in that, The machine includes a base (1), a machine support column (2) is fixedly connected to the rear side of the top of the base (1), a rotating shaft (4) is rotatably connected to the inner wall of the machine support column (2), the rotating shaft (4) is connected to a digital display pressure gauge (9) through a lifting component, a pull ring (10) is provided at the bottom of the digital display pressure gauge (9), a clamping component is provided on the outer wall of the pull ring (10), a platform (14) is fixedly connected to the top of the base (1), a plurality of base plate bottom positioning columns (15) are fixedly connected to the top of the platform (14), two fixing frames (17) are provided at the top of the platform (14), and fixing components are provided on the inner wall of the fixing frame (17).

2. The BGA tensile testing device according to claim 1, characterized in that: The lifting assembly includes a first bevel gear (5) fixedly connected to the left side of the rotating shaft (4), a second bevel gear (6) meshing with the outer wall of the first bevel gear (5), a threaded rod (7) fixedly connected to the inner wall of the second bevel gear (6), and the outer wall of the threaded rod (7) rotatably connected to the inner wall of the machine support column (2).

3. The BGA tensile testing device according to claim 2, characterized in that: The outer wall of the threaded rod (7) is threadedly connected to a slider (8), the outer wall of the slider (8) is slidably connected to the inner wall of the machine support column (2), and the rear end of the digital pressure gauge (9) is fixedly connected to the front end of the slider (8).

4. The BGA tensile testing device according to claim 1, characterized in that: A rocker arm (3) is fixedly connected to the right end of the rotating shaft (4) to drive the rotating shaft (4) to rotate.

5. The BGA tensile testing device according to claim 1, characterized in that: The clamping assembly includes a crossbar (11) sleeved on the outer wall of the pull ring (10), and clamping plates (12) are fixedly connected to both sides of the outer wall of the crossbar (11). The inner wall of the front end of the clamping plate (12) is threaded with a first fastener (13).

6. The BGA tensile testing device according to claim 1, characterized in that: The fixing component includes a groove (19) formed on the inner wall of the fixing frame (17). Movable blocks (20) are slidably connected to the left and right sides of the inner wall of the groove (19). The inner walls of the movable blocks (20) are threaded with a third fastener (21).

7. A BGA tensile testing device according to claim 1, characterized in that: The platform (14) has multiple threaded holes (16) on both the left and right sides of its top end. The fixing bracket (17) has a second fastener (18) threadedly connected to both the left and right sides of its top end. The second fastener (18) is detachably connected to the threaded hole (16).

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