Testing device for shearing force of interface layer

Abstract

The utility model provides an interface layer shearing force testing device which comprises a workbench, a moving mechanism is arranged on the workbench, a testing mechanism is horizontally connected to the moving mechanism in a sliding mode, a lifting table is installed on the workbench and located beside the testing mechanism, a clamp is installed on the lifting table, the clamp comprises a base plate, and the base plate is provided with a clamping groove. A supporting frame is installed on the base plate, a pressing assembly driven by a screw assembly is connected into the supporting frame in a lifting and sliding mode, the pressing assembly comprises a movable frame, a pressing block is installed below the movable frame, and a pressing groove is formed in the middle of the lower surface of the pressing block. The interface layer shearing force testing device is reasonable in design, the testing workpiece is clamped through the clamp, then the testing mechanism is pushed to move through the moving mechanism, interface layer shearing force testing is carried out, using is convenient, operation is easy, and interface layer shearing force testing is convenient.

Description

Technical Field

[0001] This utility model relates to a device for testing the shear force of an interface layer. Background Technology

[0002] With the development of 5G technology, people have higher requirements for electronic products. Current products can no longer meet these needs, and the design and manufacturing of electronic devices are moving towards multi-functionality and miniaturization. The shear force between the chip and the solder joint is a representative value of the chip's soldering strength. To obtain the chip's shear force value, shear force testing equipment is typically used to test the chip on the substrate. However, chip shear force is usually affected by many factors, such as shear height and shear speed. To obtain a more accurate shear force value, typical shear force testing equipment controls these factors to be constant. However, in actual testing, the test results still have a strong degree of randomness, and the test results need to be statistically distributed to obtain an effective value of the shear force.

[0003] Shear force testing primarily focuses on the measured shear force value, while data such as displacement-force curves are only used to assist in fracture mode analysis. Therefore, large shear force equipment is unnecessary for recording data other than the measured value during actual chip shear force testing. Furthermore, while it's possible to accurately record information about the shearing process in practice, much of this information is not effectively utilized. Ultimately, the shear force test only yields a thrust range, with a significant amount of irrelevant data and cumbersome data processing. Moreover, large shear force equipment is expensive, space-consuming, and difficult to move. Utility Model Content

[0004] In view of this, the purpose of this utility model is to overcome the shortcomings of the prior art and provide a testing device for interfacial layer shear force. The device is reasonably designed, clamps the test workpiece with a fixture, and then moves the testing mechanism through a moving mechanism to test the interfacial layer shear force. It is convenient to use, simple to operate, and easy to test the interfacial layer shear force.

[0005] This utility model is implemented using the following scheme: a test device for interfacial layer shear force: including a worktable, a moving mechanism is provided on the worktable, a test mechanism is horizontally slidably connected on the moving mechanism, a lifting platform is installed on the worktable next to the test mechanism, and a clamp is installed on the lifting platform.

[0006] Furthermore, the fixture includes a base plate, on which a support frame is mounted. A clamping assembly driven by a screw assembly is slidably connected within the support frame. The clamping assembly includes a movable frame, under which a clamping block is mounted. A clamping groove is formed on the center of the lower surface of the clamping block.

[0007] Furthermore, the screw assembly includes a vertically arranged screw, a support block is provided on the top of the support frame, the screw is rotatably connected to the support block, the lower end of the screw is rotatably connected to a movable frame, and the movable frame is slidably connected inside the support frame.

[0008] Furthermore, a baffle assembly is installed on the substrate. The baffle assembly includes a front baffle and a rear baffle. The front baffle and the rear baffle are installed on the front and rear sides of the pressing assembly. The pressing block is slidably connected between the front baffle and the rear baffle. A clearance guide groove is opened on both the front baffle and the rear baffle corresponding to the pressing groove.

[0009] Furthermore, the moving mechanism includes a horizontally arranged sliding screw, one end of which faces the clamping assembly. Rotating seats are provided on the worktable corresponding to both ends of the sliding screw. The two ends of the sliding screw are rotatably connected to the corresponding rotating seats. A moving seat that slides horizontally as the sliding screw rotates is mounted on the sliding screw. The testing mechanism is mounted on the moving seat.

[0010] Furthermore, an auxiliary slide rod is installed between the two rotating seats on the side of the sliding screw. The auxiliary slide rod is parallel to the sliding screw, and a sliding hole is provided on the moving seat corresponding to the auxiliary slide rod.

[0011] Furthermore, a stop rod is installed between the two rotating seats, the stop rod is parallel to the sliding screw, a stop sleeve is sleeved on the stop rod, the stop sleeve is fixed to the stop rod by bolts, and a stop block is installed on the outside of the moving seat corresponding to the stop sleeve.

[0012] Furthermore, a support platform is installed on the upper part of the sliding seat, and the testing mechanism includes a detection sensor and a force gauge. The detection sensor is installed on the side of the support platform near the fixture, and the force gauge is installed on the other side. The force gauge and the detection sensor are electrically connected.

[0013] Furthermore, a pushing mechanism is installed on the side of the detection sensor near the clamp. The pushing mechanism includes a push rod, one end of which faces the clamp and the other end is fixed to the detection sensor. A push knife is installed on the end of the push rod facing the clamp.

[0014] Furthermore, a heating mounting groove is formed in the middle of the lower surface of the substrate, and a silicone rubber heating plate is installed in the heating mounting groove.

[0015] Compared with the prior art, the present invention has the following advantages: it is reasonably designed, clamps the test workpiece with a fixture, and then pushes the test mechanism to move through a moving mechanism to test the interface layer shear force. It is convenient to use, simple to operate, and easy to test the interface layer shear force. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0017] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0018] Figure 3 for Figure 1 Enlarged structural diagram at point A in the middle;

[0019] Figure 4 for Figure 1 Enlarged structural diagram at point B;

[0020] Figure 5 This is a schematic diagram of the clamp structure of this utility model. Figure 1 ;

[0021] Figure 6 This is a schematic diagram of the clamp structure of this utility model. Figure 1 (Remove the front fender);

[0022] Figure 7 This is a schematic diagram of the clamp structure of this utility model. Figure 2 .

[0023] In the diagram: 1. Workbench, 2. Moving mechanism, 3. Testing mechanism, 4. Lifting platform, 5. Fixture, 6. Pushing mechanism, 2-1. Sliding screw, 2-2. Rotating seat, 2-3. Nut, 2-4. Auxiliary slide rod, 2-5. Stop rod, 2-6. Stop sleeve, 2-7. Stop block, 2-8. Moving seat, 2-9. Support platform, 3-1. Measuring sensor, 3-2. Force gauge, 5-1. Base plate, 5-2. Guide slide hole, 5-3. Support frame, 5-4. Moving frame, 5-5. Pressing block, 5-6. Pressing groove, 5-7. Screw, 5-8. Support block, 5-9. Front baffle, 5-10. Rear baffle, 5-11. Clearance guide groove, 5-12. Heating mounting groove, 5-13. Silicone rubber heating plate, 6-1. Push rod, 6-2. Push knife. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] It should be noted that the following detailed descriptions are exemplary and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0026] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0027] like Figure 1-7 As shown, an interface layer shear force testing device includes a worktable 1, a moving mechanism 2 on the worktable, a testing mechanism 3 horizontally slidably connected to the moving mechanism, a lifting platform 4 installed on the worktable next to the testing mechanism, and a clamp 5 installed on the lifting platform. In use, the chip-substrate sample is fixed on the lifting platform by the clamp, and the moving mechanism drives the testing mechanism to slide, thereby realizing the interface layer shear force testing.

[0028] In this embodiment, to achieve the clamping of the chip-substrate sample, the clamp includes a substrate 5-1, which is slidably connected to a lifting platform. Specifically, the substrate is provided with several horizontal and vertical guide holes 5-2, and the lifting platform is provided with guide screws that cooperate with the guide holes. Through the cooperation of the guide screws and the guide holes, the substrate can slide horizontally and vertically. At the same time, the lifting platform can be an existing micrometer lifting platform or a lifting platform driven by a lead screw. This is prior art, so it will not be described in detail. A support frame 5-3 is installed on the substrate. The support frame is in the form of a gantry frame. A clamping assembly driven by a screw assembly is slidably connected in the support frame. The clamping assembly includes a moving frame 5-4. A clamping block 5-5 is installed under the moving frame. A clamping groove 5-6 is opened in the middle of the lower surface of the clamping block. The direction of the clamping groove is horizontal and transverse.

[0029] In this embodiment, to achieve the lifting and lowering of the clamping assembly, the screw assembly includes a vertically arranged screw 5-7, and a support block 5-8 is provided on the top of the support frame. The screw is rotatably connected to the support block, and the lower end of the screw is rotatably connected to the movable frame, i.e., the screw is screwed to the support block. At the same time, both the upper and lower ends of the screw extend out of the support block. The upper end of the screw has a horizontal crossbar insertion hole, through which a crossbar is inserted to drive the screw to rotate. The lower end of the screw is rotatably connected to the movable frame, so that the movable frame will not rotate with the rotation of the screw. The specific rotational connection method can be: an annular groove is opened along the circumference on the outer periphery of the lower end of the screw, and a screw mounting hole is opened on the movable frame corresponding to the screw. At least two spring pin mounting holes are opened on the inner wall of the screw mounting hole on the movable frame. Spring pins that cooperate with the sliding groove are installed in the spring pin mounting holes. At the same time, the movable frame is slidably connected to the support frame. Alternatively, sliders can be installed on both sides of the movable frame, and the sliders are slidably connected to the support frame.

[0030] In this embodiment, for the sake of reasonable design, a baffle assembly is installed on the substrate. The baffle assembly includes a front baffle 5-9 and a rear baffle 5-10. The front baffle and the rear baffle are installed on the front and rear sides of the pressing assembly, that is, the line connecting the front baffle and the rear baffle is in the horizontal direction. The pressing block slides between the front baffle and the rear baffle. The front baffle and the rear baffle are provided with clearance guide grooves 5-11 corresponding to the pressing groove.

[0031] In this embodiment, to achieve the sliding of the moving mechanism, the moving mechanism includes a horizontally arranged sliding screw 2-1. Specifically, the sliding screw is horizontally arranged with one end facing the clamping assembly, i.e., one end of the sliding screw faces the clamping groove. Rotating seats 2-2 are provided on the worktable corresponding to both ends of the sliding screw. The two ends of the sliding screw are rotatably connected to the corresponding rotating seats. A drive motor for driving the sliding screw to rotate is installed on the worktable at the end of the sliding screw away from the clamping assembly. A moving seat 2-8 is mounted on the sliding screw and slides horizontally with the rotation of the sliding screw. That is, the moving seat has a nut mounting hole, and a nut 2-3 that cooperates with the sliding screw is fixed in the nut mounting hole. The testing mechanism is installed on the moving seat, and the sliding screw is driven to rotate by the drive motor, thereby driving the testing mechanism to slide.

[0032] In this embodiment, in order to assist the smooth sliding of the movable seat, an auxiliary slide rod 2-4 is installed between the two rotating seats on the side of the sliding screw. There is at least one auxiliary slide rod, and the auxiliary slide rod is parallel to the sliding screw. The movable seat is provided with a sliding hole corresponding to the auxiliary slide rod. The smooth sliding of the rotating seat is achieved through the cooperation of the sliding hole and the auxiliary slide rod.

[0033] In this embodiment, in order to limit the sliding of the movable seat and prevent the testing mechanism from being pushed too far forward, a stop rod 2-5 is installed between the two rotating seats. The stop rod is parallel to the sliding screw, and a stop sleeve 2-6 is sleeved on the stop rod. The stop sleeve is fixed to the stop rod by bolts. A stop block 2-7 is installed on the outside of the movable seat corresponding to the stop sleeve. A U-shaped groove is provided on the stop block corresponding to the stop rod. The U-shaped groove slides on the stop rod, and the stop block area at the edge of the U-shaped groove corresponds to the end of the stop sleeve. The stop sleeve limits the stop block to its extreme position, thereby limiting the sliding of the movable seat.

[0034] In this embodiment, to achieve detection, a support platform 2-9 is installed on the upper part of the sliding seat. The testing mechanism includes a detection sensor 3-1 and a force gauge 3-2. The detection sensor is installed on the side of the support platform near the fixture, and the force gauge is installed on the other side. The force gauge and the detection sensor are electrically connected. At the same time, a pushing mechanism 6 is installed on the side of the detection sensor near the fixture. The pushing mechanism includes a push rod 6-1, one end of which faces the fixture, and the other end is fixed to the detection sensor. A vertically arranged push knife 6-2 is installed on the end of the push rod facing the fixture. A push knife guide hole is opened on the push knife. A push knife screw is provided on the end of the push rod corresponding to the push knife guide hole. The push knife can be finely adjusted up and down and replaced by the push knife through the cooperation of the push knife guide hole and the push knife screw.

[0035] In this embodiment, the sensor is a weighing sensor, model: DYLY-103, with a range of 200KG and an accuracy of 0.03%. Its detection mechanism is as follows: shear force is a force parallel to the surface or cross-section of a material, which causes relative sliding or deformation between material layers; shear force detection refers to measuring the mechanical response of a material or structure under shear stress; the core of the detection is to convert mechanical deformation into an electrical signal through a sensor, and then process the signal through a force gauge to obtain a precise force value.

[0036] In this embodiment, a heating mounting groove 5-12 is provided on the middle of the lower surface of the substrate, and an existing silicone rubber heating plate 5-13 is installed in the heating mounting groove. The silicone rubber heating plate is used to conduct shear force test experiments at different temperatures.

[0037] In this embodiment, before the test begins, the substrate is adjusted horizontally and vertically to align the pushing mechanism with the clearance guide groove of the front baffle. Then, the lifting platform is adjusted vertically to ensure the test sample fully contacts the pusher at the front of the pushing mechanism. A preliminary test is then conducted to observe whether the pusher can complete the test without hitting the front or rear baffles. At the start of the test, the screw presses down the clamping block, clamping the chip-substrate sample. The sliding screw is then driven to move the test mechanism, and the movement is recorded in real time to complete the test.

[0038] Unless otherwise stated, if any of the technical solutions disclosed in this utility model discloses a numerical range, then the disclosed numerical range is a preferred numerical range. Any person skilled in the art should understand that the preferred numerical range is merely one among many feasible numerical values ​​that has a more obvious or representative technical effect. Because there are many numerical values, it is impossible to list them all. Therefore, this utility model discloses only some numerical values ​​to illustrate the technical solutions of this utility model. Furthermore, the numerical values ​​listed above should not constitute a limitation on the scope of protection of this utility model.

[0039] If the terms "first" or "second" are used in this document to specify the components, those skilled in the art should know that the use of "first" or "second" is merely for the purpose of distinguishing the components in the description. Unless otherwise stated, the above terms have no special meaning.

[0040] If this utility model discloses or relates to mutually fixedly connected parts or structural components, then unless otherwise stated, a fixed connection can be understood as: a detachable fixed connection (e.g., using bolts or screws), or a non-detachable fixed connection (e.g., riveting, welding). Of course, mutually fixed connections can also be replaced by an integral structure (e.g., manufactured by integral molding using a casting process) (except where it is obviously impossible to use an integral molding process).

[0041] Furthermore, the orientations or positional relationships indicated by terms such as "longitudinal," "lateral," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" used in any of the technical solutions disclosed in this utility model are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing this patent. They are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this patent. In addition, unless otherwise stated, the terms used to indicate shape in any of the technical solutions disclosed in this utility model include shapes that are similar to, close to, or approximate with it.

[0042] Any component provided by this utility model can be assembled from multiple individual components, or it can be a single component manufactured by a one-piece molding process.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A device for testing interfacial layer shear force, characterized in that: The device includes a workbench, on which a moving mechanism is provided, and a testing mechanism is horizontally slidably connected to the moving mechanism. A lifting platform is installed on the workbench next to the testing mechanism, and a clamp is installed on the lifting platform.

2. The testing device for interfacial layer shear force according to claim 1, characterized in that: The fixture includes a base plate, on which a support frame is mounted. A clamping assembly driven by a screw assembly is slidably connected within the support frame. The clamping assembly includes a movable frame, under which a clamping block is mounted. A clamping groove is formed on the center of the lower surface of the clamping block.

3. The testing device for interfacial layer shear force according to claim 2, characterized in that: The screw assembly includes a vertically arranged screw, a support block is provided on the top of the support frame, the screw is rotatably connected to the support block, the lower end of the screw is rotatably connected to a movable frame, and the movable frame is slidably connected inside the support frame.

4. The testing device for interfacial layer shear force according to claim 3, characterized in that: A baffle assembly is mounted on the base plate. The baffle assembly includes a front baffle and a rear baffle. The front baffle and the rear baffle are mounted on the front and rear sides of the pressing assembly. The pressing block is slidably connected between the front baffle and the rear baffle. A clearance guide groove is opened on both the front baffle and the rear baffle corresponding to the pressing groove.

5. The testing device for interfacial layer shear force according to claim 2, characterized in that: The moving mechanism includes a horizontally arranged sliding screw, one end of which faces the clamping assembly. Rotating seats are provided on the worktable corresponding to both ends of the sliding screw. The two ends of the sliding screw are rotatably connected to the corresponding rotating seats. A moving seat that slides horizontally as the sliding screw rotates is mounted on the sliding screw. The testing mechanism is mounted on the moving seat.

6. The testing device for interfacial layer shear force according to claim 5, characterized in that: An auxiliary slide rod is installed between the two rotating seats on the side of the sliding screw. The auxiliary slide rod is parallel to the sliding screw, and a sliding hole is provided on the moving seat corresponding to the auxiliary slide rod.

7. The testing device for interfacial layer shear force according to claim 5, characterized in that: A stop rod is installed between the two rotating seats. The stop rod is parallel to the sliding screw. A stop sleeve is fitted on the stop rod. The stop sleeve is fixed to the stop rod by bolts. A stop block is installed on the outside of the moving seat corresponding to the stop sleeve.

8. The testing device for interfacial layer shear force according to claim 5, characterized in that: A support platform is installed on the upper part of the sliding seat. The testing mechanism includes a detection sensor and a force gauge. The detection sensor is installed on the side of the support platform near the fixture, and the force gauge is installed on the other side. The force gauge and the detection sensor are electrically connected.

9. The testing device for interfacial layer shear force according to claim 8, characterized in that: A pushing mechanism is installed on the side of the detection sensor near the clamp. The pushing mechanism includes a push rod, one end of which faces the clamp and the other end is fixed to the detection sensor. A push knife is installed on the end of the push rod facing the clamp.

10. The testing device for interfacial layer shear force according to claim 2, characterized in that: A heating mounting groove is provided on the middle of the lower surface of the substrate, and a silicone rubber heating plate is installed in the heating mounting groove.

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