A ceramic sheet warpage test fixture

Abstract

The utility model discloses a kind of ceramic sheet warping degree test fixture, including rack body and and install the test board component on the rack body, the test board and rack body form certain angle, test fixture is installed on the test board component, clearance is equipped between the test board component and test fixture, matched ceramic sheet, the ceramic sheet is along test board component and slides through clearance;The test board component includes the test board of rotation connection with the rack body and is set on the test board and unloading port, the unloading port can take out stuck ceramic sheet;The test fixture includes test piece and several groups of guide pillar, the test piece is slid upward / downward on the rack body by guide pillar. The utility model can quickly detect the warping degree of ceramic sheet, and greatly improve test efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of ceramic sheet warpage detection technology, and in particular relates to a ceramic sheet warpage testing fixture. Background Technology

[0002] A ceramic heat sink is a device used to dissipate heat from heat-generating electronic components in electrical appliances. Currently, commonly used types on the market include thermally conductive alumina ceramic heat sinks, thermally conductive aluminum nitride ceramic heat sinks, and silicon carbide ceramic heat sinks. A ceramic heat sink mainly consists of a heat dissipation layer and a thermally conductive layer. The heat dissipation layer utilizes the principle of liquid-phase chemical change, unevenly dispersing a latex-like slurry to form a thin structure of ceramic powder, which is then combined with submicron-sized powder particles and sintered into a hollow crystalline porous structure. The porosity of this microporous structure is between 5% and 40%, and the powder particle size is between 90 nanometers and 300 nanometers. The surface in contact with the heat source has a thermally conductive layer, which absorbs and conducts heat. The high surface area of ​​the porous structure of the heat dissipation layer, combined with air as the heat dissipation medium, enhances the heat dissipation capacity.

[0003] Since ceramic sheets are used in environments containing precision electrical components, the requirements for ceramic sheets are very high, especially the warpage of the flat surface. Therefore, each sheet needs to undergo a flatness test. However, the current method for testing flatness is to use professional measuring instruments. These measuring instruments are slow and have long testing cycles, making them very unsuitable for large-scale testing. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A ceramic sheet warpage testing fixture includes a frame body and a test plate assembly mounted on the frame body. The test plate assembly forms a certain angle with the frame body. A test fixture is mounted on the test plate assembly. A gap is provided between the test plate assembly and the test fixture to match the ceramic sheet. The ceramic sheet slides along the test plate assembly through the gap. The test plate assembly includes a test plate rotatably connected to the frame body and a discharge port provided on the test plate. The frame body is also provided with an adjusting component to adjust the rotation angle of the test plate. The discharge port can remove the stuck ceramic sheet. The test fixture includes a test piece and several sets of guide posts. The test piece slides up / down on the frame body via the guide posts. An elastic element is also fitted on the guide post, with one end of the elastic element abutting against the frame body and the other end abutting against the test piece.

[0005] Furthermore, the test plate is provided with at least two sets of guide blocks, which are used to guide the falling ceramic pieces into the gap. The guide blocks are fixedly connected to the test plate by fasteners. The test plate is also provided with an adjustment groove, in which the fasteners can be adjusted and fixed.

[0006] Furthermore, the discharge port includes at least two baffles disposed on the test plate. The two baffles can be flipped downward along the side. The test plate is also provided with a driving component, which is used to drive the baffles to open and close.

[0007] Furthermore, the adjusting component includes an adjusting screw and a clearance groove formed on the frame body, wherein the adjusting screw adjusts the tilt angle of the fixed test plate through the clearance groove.

[0008] Furthermore, the driving component includes a motor and gear elements, and the motor can drive the baffle to open and close through the gear elements.

[0009] Furthermore, the test plate is also equipped with a feeding assembly, which has a groove for accommodating ceramic sheets. The bottom of the groove has a discharge port, and several ceramic sheets are stacked in the groove and slide out from the discharge port.

[0010] Furthermore, the elastic element is a spring.

[0011] The beneficial effects of this utility model are: 1. The feeding component of this utility model can be selected according to the ceramic sheet and fixed on the test plate. The feeding component can stack several ceramic sheets. Under the action of gravity, the ceramic sheet passes through the gap between the test fixture and the test plate component. If it can pass through the gap smoothly, it is qualified; if it fails to pass through, it is a defective product. It can quickly and continuously test ceramic sheets, and the testing speed is fast.

[0012] 2. The test fixture of this utility model can adjust the gap between the test fixture and the test plate assembly at four corners, and can be adapted to ceramic sheets of different thicknesses, with good versatility. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the test board assembly structure of this utility model; Figure 2 This is a schematic diagram of the overall structure of this utility model; Figure 3 This is a schematic diagram of the test fixture structure of this utility model; Figure 4 This is a schematic diagram of the test board structure of this utility model; Figure 5 This is a utility model Figure 2 A magnified view of part A; Figure 6This is a schematic diagram of the feeding component of this utility model; Figure 7 This is a schematic diagram of the driving component of this utility model; The parts in the attached diagram are labeled as follows: 1. Frame body; 2. Test plate assembly; 21. Test plate; 211. Adjustment groove; 22. Discharge port; 221. Baffle; 222. Drive component; 222-1. Motor; 222-2. Gear component; 23. Adjustment component; 231. Adjustment screw; 232. Clearance groove; 3. Test fixture; 31. Test piece; 32. Guide post; 33. Elastic element; 4. Feeding assembly; 41. Groove; 42. Discharge port; 5. Ceramic sheet. Detailed Implementation

[0014] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention. Example

[0015] like Figures 1 to 7 As shown, a ceramic sheet warpage testing fixture includes a frame body 1 and a test plate assembly 2 mounted on the frame body 1. The test plate assembly 2 forms a certain angle with the frame body 1. A test fixture 3 is mounted on the test plate assembly 2. A gap is provided between the test plate assembly 2 and the test fixture 3 to match ceramic sheets 5. The ceramic sheets 5 slide along the test plate assembly 2 through the gap. A feeding assembly 4 is also mounted on the test plate 21. The feeding assembly 4 has a groove 41 for accommodating ceramic sheets 5. A discharge port 42 is opened at the bottom of the groove 41. Several ceramic sheets 5 are stacked in the groove 41 and slide out from the discharge port 42.

[0016] The test plate assembly 2 includes a test plate 21 rotatably connected to the frame body 1 and a discharge port 22 disposed on the test plate 21. The frame body 1 is also provided with an adjusting member 23 for adjusting the rotation angle of the test plate 21. The discharge port 22 can remove the stuck ceramic piece 5. Preferably, the test plate 21 is provided with at least two sets of guide blocks 24. The guide blocks 24 are used to guide the falling ceramic piece 5 into the gap. The guide blocks 24 are fixedly connected to the test plate 21 by fasteners. The test plate 21 is also provided with an adjusting groove 211. The fasteners can be adjusted and fixed in the adjusting groove 211. The discharge port 22 includes at least two baffles 221 disposed on the test plate 21. The two baffles 221 can be flipped downward along the side. The test plate 21 is also provided with a driving member 222 for driving the baffles 221 to open and close. Preferably, the driving component 222 includes a motor 222-1 and a gear element 222-2. The motor can drive the baffle 221 to open and close via the gear element 222-2. The adjusting component 23 includes an adjusting screw 231 and a clearance groove 232 formed on the frame body 1. The adjusting screw 231 adjusts the tilt angle of the fixed test plate 21 via the clearance groove 232. The test fixture 3 includes a test piece 31 and several sets of guide posts 32. The test piece 31 slides up / down on the frame body 1 via the guide posts 32. An elastic element 33 is also fitted onto each guide post 32, with one end of the elastic element 33 abutting against the frame body 1 and the other end abutting against the test piece 31. Specifically, the elastic element 33 is a spring.

[0017] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A ceramic sheet warpage testing fixture, characterized in that: The test board assembly (2) includes a frame body (1) and a test board assembly (2) mounted on the frame body (1). The test board assembly (2) forms a certain angle with the frame body (1). A test fixture (3) is mounted on the test board assembly (2). A gap for a matching ceramic piece (5) is provided between the test board assembly (2) and the test fixture (3). The ceramic piece (5) slides along the test board assembly (2) through the gap. The test plate assembly (2) includes a test plate (21) rotatably connected to the frame body (1) and a discharge port (22) provided on the test plate (21). The frame body (1) is also provided with an adjusting component (23) for adjusting the rotation angle of the test plate (21). The discharge port (22) can remove the stuck ceramic piece (5). The test fixture (3) includes a test piece (31) and several sets of guide posts (32). The test piece (31) slides up / down on the frame body (1) via the guide posts (32). An elastic element (33) is also fitted on the guide post (32). One end of the elastic element (33) abuts against the frame body (1), and the other end abuts against the test piece (31).

2. The ceramic sheet warpage testing fixture according to claim 1, characterized in that: The test plate (21) is provided with at least two sets of guide blocks (24). The guide blocks (24) are used to guide the falling ceramic pieces (5) into the gap. The guide blocks (24) are fixedly connected to the test plate (21) by fasteners. The test plate (21) is also provided with an adjustment groove (211). The fasteners can be adjusted and fixed in the adjustment groove (211).

3. The ceramic sheet warpage testing fixture according to claim 1, characterized in that: The discharge port (22) includes at least two baffles (221) disposed on the test plate (21). The two baffles (221) can be flipped downward along the side. The test plate (21) is also provided with a driving member (222), which is used to drive the baffles (221) to open and close.

4. The ceramic sheet warpage testing fixture according to claim 1, characterized in that: The adjusting component (23) includes an adjusting screw (231) and a clearance groove (232) formed on the frame body (1). The adjusting screw (231) adjusts the tilt angle of the fixed test plate (21) through the clearance groove (232).

5. The ceramic sheet warpage testing fixture according to claim 3, characterized in that: The driving component (222) includes a motor (222-1) and a gear element (222-2), and the motor can drive the baffle (221) to open and close through the gear element (222-2).

6. The ceramic sheet warpage testing fixture according to claim 1, characterized in that: The test board (21) is also equipped with a feeding assembly (4). The feeding assembly (4) has a groove (41) for accommodating ceramic pieces (5). The bottom of the groove (41) has a discharge port (42). Several ceramic pieces (5) are stacked in the groove (41) and slide out from the discharge port (42).

7. The ceramic sheet warpage testing fixture according to claim 1, characterized in that: The elastic element (33) is a spring.

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