A tunable bump shear force testing platform

Abstract

The utility model relates to electronic packaging technical field, concretely relates to a kind of bump shearing force test platform of fine tuning, including test platform, the top of test platform is slidably connected with sliding support by electric slide rail, the both sides of sliding support are slidably connected with adjusting mechanism, the adjusting mechanism includes shear cutter, the shear cutter is slidably connected in the bottom of sliding support, the both sides of the outer wall of sliding support are slidably connected with telescopic block, and it is inside the sliding support that it is penetrated, the top of sliding support is equipped with warning mechanism.The utility model is through the mutual cooperation between adjusting mechanism internal parts, it is convenient to complete shear cutter height fine tuning on sliding support, through the mutual cooperation between warning mechanism internal parts, it is convenient to slightly incline when shear cutter adjusting process occurs, warning light is used to warn staff, ensure that shear cutter bottom and circuit board surface weld spot bump height level parallel.

Description

Technical Field

[0001] This utility model relates to the field of electronic packaging technology, specifically to a finely adjustable bump shear force testing platform. Background Technology

[0002] Solder joints on the back of electronic packages play a crucial role in electronic devices, connecting various components on the circuit board and ensuring smooth transmission of current and signals. The quality of solder joints directly affects the reliability and lifespan of the device, and bump shear force testing is a key method in the microelectronic packaging field for evaluating the mechanical bonding strength between bumps such as solder balls and copper pillars and the substrate. Its core principle is to simulate the tangential stress experienced by the chip in actual use by applying a shear force parallel to the substrate direction until the bump fails (such as interface desoldering or cohesive fracture), thereby quantifying the mechanical properties of the bump.

[0003] A search revealed a utility model patent with publication number CN218584499U, which discloses a pusher holder for a convex point shear force test. The holder includes a tool holder with a mounting frame at its lower end. A fixed block is mounted at the center of the mounting frame, and screws are mounted on both sides of the fixed block, rotatably connected to the inner wall of the mounting frame and the side wall of the fixed block, respectively. Each screw is threaded with a movable block. Pushers are mounted at the lower ends of the fixed block and the two movable blocks. Transmission mechanisms are located on both sides of the mounting frame. A large wheel is located on the side of the transmission mechanism away from the mounting frame, and a small wheel is located above the large wheel. The large and small wheel are connected by a belt. A fine-tuning knob is located on one side of the small wheel, connected to the axis of the small wheel. This utility model greatly simplifies the ball-pushing process, reducing the previous three-stage operation to a single stage, saving significant time and labor costs, and multiplying production efficiency.

[0004] Although the aforementioned patent simplifies the ball-pushing process by providing a small disc above the large disc and connecting the large and small discs via a belt, and by providing a fine-tuning knob on one side of the small disc connected to the disc's axis, thus saving significant time and labor costs and multiplying production efficiency, the cutting tool is typically positioned at 1 / 3 or 1 / 2 of the solder joint's protrusion height during the bump shearing test. However, the protrusion height of solder joints on the back of electronic packages is inconsistent during actual soldering. This causes the existing cutting tool to move parallel to the solder joint during shearing, preventing solder joints with excessively low protrusion heights from contacting the cutting tool and making it impossible to shear some solder joints.

[0005] Therefore, it is necessary to propose a finely adjustable convex shear force testing platform to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a finely adjustable protrusion shearing force testing platform. By adjusting the cooperation between the internal parts of the mechanism, it is easy to finely adjust the height of the shearing cutter on the sliding bracket. By also adjusting the cooperation between the internal parts of the warning mechanism, it is easy to alert the operator when the shearing cutter tilts slightly during adjustment. This ensures that the bottom of the shearing cutter is horizontally parallel to the height of the solder joint protrusion on the circuit board surface. This solves the problem in the prior art where the height of the solder joint protrusion on the back of electronic packages is inconsistent during actual soldering. This causes the existing cutter to move parallel to the solder joint, and during shearing, solder joints with too low a protrusion height cannot contact the cutter, making it impossible to shear and test some solder joints.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a finely adjustable convex point shear force testing platform, comprising a testing platform, wherein a sliding bracket is slidably connected to the top of the testing platform via an electric slide rail, and an adjustment mechanism is slidably connected to both sides of the sliding bracket and extends into the interior of the sliding bracket, and a warning mechanism is installed at the top of the sliding bracket.

[0008] The adjustment mechanism includes a shearing blade, which is slidably connected to the bottom end of a sliding bracket. Telescopic blocks are slidably connected to both sides of the outer wall of the sliding bracket and extend into the interior of the sliding bracket. Telescopic columns are mechanically fixed to the bottom ends of both sides of the shearing blade and are located at the top of one side of the telescopic block.

[0009] The warning mechanism includes a warning light, which is fixed to the top of the sliding bracket by bolts. A conical groove is formed on the inner wall of the top of the shearing blade. Photoelectric sensors are fixed to both sides of the conical groove by bolts and are connected to the warning light via cables. A circular ball rolls inside the conical groove. A miniature spring is mechanically connected between the top of the shearing blade and the inside of the sliding bracket.

[0010] Preferably, the adjusting mechanism further includes a limiting post, which is slidably connected to the top and bottom ends of the telescopic block and extends into the interior of the telescopic block. The bottom end of the limiting post is mechanically connected to a support plate and slidably connected to the interior of the sliding bracket. A support spring is mechanically fixed between the bottom end of the support plate and the interior of the sliding bracket. A conical block is mechanically fixed to the side of the top end of the support plate away from the limiting post and extends through the telescopic block into the interior of the sliding bracket.

[0011] Preferably, the top of the test platform is provided with a clamping groove that matches the electronic board, and the electronic board is fixed to the top of the test platform by bolts, and the bottom of the shearing blade is fixed with a blade by bolts.

[0012] Preferably, the contact surface between the telescopic block and the bottom end of the telescopic column is a conical surface, and a slider and a groove are provided between the telescopic column and the sliding bracket, and a scale is provided on the surface of the telescopic block.

[0013] Preferably, the sliding bracket has opposing conical tooth grooves distributed at the top and bottom of the telescopic block, the conical block and the conical tooth grooves mesh with each other, and the telescopic block has a support groove inside that matches the support plate.

[0014] Preferably, the conical groove has a movable groove that matches the sphere, and the center of the conical groove is lower than the two sides of the conical groove. The sliding bracket has a telescopic space inside that matches the micro spring and the shearing tool.

[0015] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0016] 1. By pressing the limiting post at the top of the telescopic block, the limiting post is forced to push the support plate to compress the support spring and move. This movement of the support plate causes the conical block to move out of the conical groove, releasing the restriction on the telescopic block's sliding near the telescopic column. This allows the operator to push the telescopic blocks on both sides of the sliding bracket, moving the telescopic blocks closer to the telescopic column. The conical surface then compresses the telescopic column, causing the telescopic column to compress the micro-spring and move. This, in turn, moves the shearing blade upward. By pressing the limiting post at the bottom of the telescopic block, the interaction between the limiting post and the support plate facilitates the movement of the conical block out of the conical groove at the bottom of the telescopic block, releasing the restriction on the telescopic block's sliding away from the telescopic column. This allows the operator to pull the telescopic block to release the compression on the telescopic column. Under its own weight and the action of the micro-spring, the telescopic column moves the shearing blade downward, thus completing the height adjustment between the shearing blade and the circuit board solder joint protrusion. This allows the shearing blade to fine-tune the height of the appropriate cutting position according to the height of the solder joint protrusion.

[0017] 2. A scale is provided on the surface of the telescopic block, allowing operators to visually observe the adjustment distance of the telescopic blocks on both sides of the sliding bracket when the telescopic blocks are moved and adjusted. When the adjustment distances of the telescopic blocks on both sides of the sliding bracket are inconsistent, the shearing blade itself will tilt slightly, causing the conical groove to tilt synchronously. This fixes the sphere in the conical groove to the side of the photoelectric sensor on the tilted side, blocking the photoelectric signal between the two photoelectric sensors. The photoelectric sensor then transmits the signal to the warning light, causing the warning light to illuminate and alarm, thus alerting the operator to the tilt status of the shearing blade. This allows the operator to easily adjust the tilt status of the shearing blade using the scale on the surface of the telescopic block. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a cross-sectional structural diagram of the sliding bracket of this utility model;

[0021] Figure 3 This is a cross-sectional structural diagram of the shearing tool of this utility model;

[0022] Figure 4 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0023] Figure 5 This is the system control flowchart of this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Test platform; 101. Sliding bracket; 2. Adjustment mechanism; 201. Shearing blade; 202. Telescopic block; 203. Limiting post; 204. Support plate; 205. Support spring; 206. Conical block; 207. Telescopic post; 3. Warning mechanism; 301. Warning light; 302. Conical groove; 303. Photoelectric sensor; 304. Circular ball; 305. Miniature spring. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0027] This utility model provides, for example Figure 1-5 The present invention relates to a finely adjustable convex point shear force testing platform, comprising a testing platform 1, a sliding bracket 101 slidably connected to the top of the testing platform 1 via an electric slide rail, an adjustment mechanism 2 slidably connected to both sides of the sliding bracket 101 and extending into the interior of the sliding bracket 101, and a warning mechanism 3 installed at the top of the sliding bracket 101.

[0028] The adjustment mechanism 2 includes a shearing blade 201, which is slidably connected to the bottom end of the sliding bracket 101. Telescopic blocks 202 are slidably connected to both sides of the outer wall of the sliding bracket 101 and extend into the interior of the sliding bracket 101. Telescopic columns 207 are mechanically fixed to the bottom ends of both sides of the shearing blade 201 and are located at the top of one side of the telescopic block 202.

[0029] The warning mechanism 3 includes a warning light 301, which is fixed to the top of the sliding bracket 101 by bolts. A tapered groove 302 is provided on the inner wall of the top of the shearing blade 201. Photoelectric sensors 303 are fixed on both sides of the tapered groove 302 by bolts and are connected to the warning light 301 by cables. A circular ball 304 rolls inside the tapered groove 302. A miniature spring 305 is mechanically connected between the top of the shearing blade 201 and the inside of the sliding bracket 101.

[0030] By adjusting the cooperation between the internal parts of the adjustment mechanism 2, it is easy to make fine adjustments to the height of the shearing blade 201 on the sliding bracket 101. By adjusting the cooperation between the internal parts of the warning mechanism 3, it is easy to warn the staff by the warning light 301 when the shearing blade 201 tilts slightly during the adjustment process, and ensure that the bottom of the shearing blade 201 is horizontally parallel to the height of the solder joint protrusion on the circuit board surface.

[0031] Refer to the instruction manual appendix Figure 1-5 The adjustment mechanism 2 also includes a limiting post 203, which is slidably connected to the top and bottom of the telescopic block 202 and extends into the interior of the telescopic block 202. The bottom of the limiting post 203 is mechanically connected to a support plate 204 and slidably connected to the interior of the sliding bracket 101. A support spring 205 is mechanically fixed between the bottom of the support plate 204 and the interior of the sliding bracket 101. A conical block 206 is mechanically fixed to the side of the top of the support plate 204 away from the limiting post 203 and extends through the telescopic block 202 into the interior of the sliding bracket 101. Through the mutual cooperation between the internal parts of the adjustment mechanism 2, the telescopic block 202 can be easily moved, thereby pushing the telescopic post 207 to drive the shearing blade 201 to make horizontal fine adjustments.

[0032] Refer to the instruction manual appendix Figure 1-5 The top of the test platform 1 is provided with a clamping groove that matches the electronic board, and the electronic board is fixed to the top of the test platform 1 by bolts. The bottom of the shearing blade 201 is fixed with a blade by bolts. The top of the test platform 1 is provided with a clamping groove that matches the electronic board, and the electronic board is fixed to the top of the test platform 1 by bolts, which makes it easy to install and fix the electronic board on the test platform 1 and to facilitate shearing tests.

[0033] Refer to the instruction manual appendix Figure 1-5 The contact surface between the telescopic block 202 and the bottom end of the telescopic column 207 is tapered, and a slider and a groove are provided between the telescopic column 207 and the sliding bracket 101. A scale is provided on the surface of the telescopic block 202. The tapered contact surface between the telescopic block 202 and the bottom end of the telescopic column 207, and the slider and groove between the telescopic column 207 and the sliding bracket 101, facilitate the movement of the telescopic block 202 to push the telescopic column 207 to move.

[0034] Refer to the instruction manual appendix Figure 1-5 The sliding bracket 101 has opposing conical grooves distributed at the top and bottom of the telescopic block 202. The conical block 206 engages with the conical grooves. The telescopic block 202 has a support groove that matches the support plate 204. The opposing conical grooves in the sliding bracket 101, distributed at the top and bottom of the telescopic block 202, and the engaging of the conical block 206 with the conical grooves, facilitate the engagement of the conical block 206 with the conical grooves and limit and fix the sliding position of the telescopic block 202.

[0035] Refer to the instruction manual appendix Figure 1-5 The conical groove 302 has a movable groove that matches the circular ball 304, and the center of the conical groove 302 is lower than the two sides of the conical groove 302. The sliding bracket 101 has a telescopic space that matches the micro spring 305 and the shearing blade 201. The conical groove 302 has a movable groove that matches the circular ball 304, and the center of the conical groove 302 is lower than the two sides of the conical groove 302, which facilitates the circular ball 304 to roll in the conical groove 302 and is located between the photoelectric sensors 303.

[0036] The working principle of this practical application is as follows:

[0037] Refer to the instruction manual appendix Figure 1-5 By pressing the limiting post 203 at the top of the telescopic block 202, the limiting post 203 is forced to push the support plate 204 to compress the support spring 205 and move. This movement of the support plate 204 causes the conical block 206 to move out of the conical groove, releasing the restriction on the sliding of the telescopic block 202 towards the telescopic post 207. This allows the operator to push the telescopic blocks 202 on both sides of the sliding bracket 101, causing the telescopic blocks 202 to move closer to the telescopic post 207. The conical surface then compresses the telescopic post 207, causing the telescopic post 207 to compress the micro spring 305 and move. This, in turn, causes the shearing blade 201 to move upward. By pressing the telescopic block 202... The limiting post 203 at the bottom, through the cooperation of the limiting post 203 and the support plate 204, facilitates the movement of the conical block 206 out of the conical tooth groove at the bottom of the telescopic block 202, releasing the sliding restriction on the telescopic block 202 away from the telescopic post 207. This allows the operator to pull the telescopic block 202 to slide and release the pressure on the telescopic post 207. Under the action of its own weight and the micro spring 305, the telescopic post 207 drives the shearing blade 201 to move downward, thus completing the height adjustment between the shearing blade 201 and the circuit board solder joint protrusion. This allows the shearing blade 201 to make appropriate height adjustments for the shearing position according to the height of the solder joint protrusion.

[0038] Refer to the instruction manual appendix Figure 1-5The telescopic block 202 has a scale on its surface, which allows the operator to visually observe the adjustment distance of the telescopic blocks 202 on both sides of the sliding bracket 101 when the telescopic blocks 202 are moved and adjusted. When the adjustment distances of the telescopic blocks 202 on both sides of the sliding bracket 101 are inconsistent, the shearing blade 201 will tilt slightly, causing the conical groove 302 to tilt synchronously. This fixes the sphere 304 in the conical groove 302 to the side of the photoelectric sensor 303 on the tilted side, and blocks the photoelectric signal between the two photoelectric sensors 303. The photoelectric sensor 303 then transmits the signal to the warning light 301, causing the warning light 301 to light up and alarm, thus reminding the operator to understand the tilt state of the shearing blade 201. This allows the operator to easily adjust the tilt state of the shearing blade 201 using the scale on the surface of the telescopic block 202.

[0039] The above description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A finely adjustable convex point shear force testing platform, characterized in that: The test platform (1) is included. The top of the test platform (1) is slidably connected to a sliding bracket (101) via an electric slide rail. Adjustment mechanisms (2) are slidably connected to both sides of the sliding bracket (101) and extend into the interior of the sliding bracket (101). A warning mechanism (3) is installed at the top of the sliding bracket (101). The adjustment mechanism (2) includes a shearing blade (201), which is slidably connected to the bottom end of the sliding bracket (101). Telescopic blocks (202) are slidably connected to both sides of the outer wall of the sliding bracket (101) and extend into the interior of the sliding bracket (101). Telescopic columns (207) are mechanically fixed to the bottom ends of both sides of the shearing blade (201) and are located at the top of one side of the telescopic block (202). The warning mechanism (3) includes a warning light (301), which is fixed to the top of the sliding bracket (101) by bolts. The inner wall of the top of the shearing blade (201) is provided with a conical groove (302). Photoelectric sensors (303) are fixed to both sides of the conical groove (302) by bolts and are connected to the warning light (301) by a cable. A circular ball (304) rolls inside the conical groove (302). A miniature spring (305) is mechanically connected between the top of the shearing blade (201) and the inside of the sliding bracket (101).

2. The adjustable convex point shear force testing platform according to claim 1, characterized in that: The adjustment mechanism (2) further includes a limiting post (203), which is slidably connected to the top and bottom of the telescopic block (202) and extends into the interior of the telescopic block (202). The bottom of the limiting post (203) is mechanically connected to a support plate (204) and slidably connected to the interior of the sliding bracket (101). A support spring (205) is mechanically fixed between the bottom of the support plate (204) and the interior of the sliding bracket (101). A conical block (206) is mechanically fixed to the side of the top of the support plate (204) away from the limiting post (203) and extends through the telescopic block (202) into the interior of the sliding bracket (101).

3. The adjustable convex point shear force testing platform according to claim 1, characterized in that: The top of the test platform (1) is provided with a clamping groove that matches the electronic board, and the electronic board is fixed to the top of the test platform (1) by bolts. The bottom of the shearing tool (201) is fixed with a tool by bolts.

4. The adjustable convex point shear force testing platform according to claim 1, characterized in that: The contact surface between the telescopic block (202) and the bottom end of the telescopic column (207) is a conical surface, and a slider and a groove are provided between the telescopic column (207) and the sliding bracket (101). A scale is provided on the surface of the telescopic block (202).

5. The adjustable convex point shear force testing platform according to claim 2, characterized in that: The sliding bracket (101) has opposing conical tooth grooves distributed at the top and bottom of the telescopic block (202). The conical block (206) meshes with the conical tooth grooves. The telescopic block (202) has a support groove inside that matches the support plate (204).

6. The adjustable convex point shear force testing platform according to claim 1, characterized in that: The conical groove (302) has a movable groove that matches the sphere (304) inside, and the center of the conical groove (302) is lower than the two sides of the conical groove (302). The sliding bracket (101) has a telescopic space inside that matches the micro spring (305) and the shearing blade (201).

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