Mounting platform and test fixture

Abstract

The utility model relates to a mounting platform and a test fixture, the mounting platform comprises a cylinder platform, a bearing bottom block, a limiting bottom block and a pressing block, the bearing bottom block is mounted on the cylinder platform and is provided with a first bearing surface, the first bearing surface is used for bearing a mainboard of a chip, the limiting bottom block is detachably mounted on the bearing bottom block and is provided with a second bearing surface, and the second bearing surface is used for bearing the mainboard of the chip. The second bearing surface is used for bearing the flexible circuit board of the chip, the pressing blocks are detachably installed on the air cylinder platform, the pressing blocks are arranged above the second bearing surface at intervals and used for clamping the flexible circuit board of the chip with the limiting bottom blocks, and when AA equipment is cut, only the limiting bottom blocks and the pressing blocks matched with the flexible circuit board of the chip need to be replaced. Repeated precise leveling is not needed, the labor cost, the product standby time and the material cost and the machining cost of testing equipment are saved, and the product production cycle is shortened.

Description

TECHNICAL FIELD

[0001] The utility model relates to chip testing technical field, especially installation platform and test fixture. BACKGROUND

[0002] The chip assembly of the camera equipment needs to precisely level the bottom block for bearing the chip assembly before AA test, and can only be AA tested after leveling. When the AA equipment is cut, different bottom blocks need to be replaced to adapt to different chips, so the bottom block needs to be precisely leveled again. Usually, it takes at least 80 minutes to level once, which undoubtedly takes a lot of time, resulting in low production efficiency and affecting the production cycle of products. UTILITY MODEL CONTENT

[0003] Based on the fact that a lot of time is spent on precise leveling when the AA equipment is cut, resulting in the extension of the production cycle of products, it is necessary to provide installation platform and test fixture.

[0004] The installation platform is used for installing chips and comprises:

[0005] A cylinder platform;

[0006] A supporting bottom block, which is installed on the cylinder platform and has a first supporting surface for bearing the main board of the chip;

[0007] A limiting bottom block, which is detachably installed on the supporting bottom block and has a second supporting surface for bearing the flexible circuit board of the chip; and

[0008] A pressing block, which is detachably installed on the cylinder platform, is arranged above the second supporting surface and is used for clamping the flexible circuit board of the chip with the limiting bottom block.

[0009] In this way, when the AA equipment is cut, only the limiting bottom block and the pressing block matched with the flexible circuit board (FPC) of the chip need to be replaced, without the need for repeated precise leveling. According to actual test, the leveling time is shortened from 80 minutes to 20 minutes, the efficiency is improved by 75%, the labor cost and product standby time are saved, and the production cycle of products is shortened. In addition, since the supporting bottom block is designed universally, the material cost and processing cost of the test equipment are also saved.

[0010] In one of the embodiments, the supporting bottom block comprises a fixed part fixedly connected to the cylinder platform and providing the first supporting surface, and a first guide rail part horizontally extended from the fixed part, and the limiting bottom block comprises a limiting part providing the second supporting surface, and a matching part located on the side of the limiting part away from the second supporting surface and slidably matched with the first guide rail part.

[0011] This design limits the freedom of the bottom block by allowing it to slide and disassemble, simplifying assembly and disassembly and improving the cutting efficiency of the AA equipment.

[0012] In one embodiment, a first guide bar is protruding from the upper surface of the first guide rail portion, and the mating portion is provided with a first snap-fit ​​groove, wherein the first guide bar is slidably inserted into the first snap-fit ​​groove.

[0013] This design not only enables a sliding connection between the limiting base block and the supporting base block, but also facilitates the stacking of the limiting base blocks. Multiple limiting base blocks occupy less space when stacked and will not interfere with each other.

[0014] In one embodiment, the cross-sectional width of the first guide strip gradually increases vertically upwards;

[0015] The width of the first snap-fit ​​groove gradually increases from the opening to the bottom of the groove.

[0016] With this configuration, the limiting block can only slide along the extension direction of the first guide bar, that is, it has only one degree of freedom. This increases the limit and prevents the limiting block from sliding off the supporting block in a direction perpendicular to the first guide bar.

[0017] In one embodiment, the mounting platform further includes a first spring pin mounted on the supporting base block, and the limiting base block also has a first pin hole that engages with the first spring pin.

[0018] This design utilizes the engagement of the first spring pin and the first pin hole to limit the last degree of freedom of the limiting base block, ensuring that the limiting base block will not easily move after it is assembled with the supporting base block, thus guaranteeing the stability of chip installation. The spring pin automatically engages, facilitating assembly and improving chip installation efficiency.

[0019] In one embodiment, the first movable pin of the first spring pin is movably inserted into the supporting base block.

[0020] This design allows operators to easily disassemble the limiting block manually. The first movable pin of the first spring pin can be movably inserted into the supporting block of the supporting block, which also extends the length of the first movable pin inserted into the first pin hole, thereby preventing the limiting block from being accidentally pulled out.

[0021] In one embodiment, the limiting block has a guide ramp located at the end of the first snap-fit ​​groove, the guide ramp gradually approaching the opening of the first snap-fit ​​groove from the end of the first snap-fit ​​groove toward the center.

[0022] With this configuration, guided by the inclined plane, the first spring pin is gradually compressed as the limiting block slides, until it automatically pops out when the first pin hole of the limiting block aligns with the position of the first spring pin, thus reducing the assembly resistance of the limiting block.

[0023] In one embodiment, the cylinder platform is provided with a second guide rail portion, and a second guide strip is protruding from the upper surface of the second guide rail portion. The mounting platform also includes a second spring pin mounted on the mounting platform. The pressure block is provided with a second snap-fit ​​groove that matches the shape of the second guide strip and a second pin hole that engages with the second spring pin.

[0024] This design, with both the limiting base block and the pressure block using spring pins and pin holes for positioning, simplifies the operation and makes it easier for testers to remove the pressure block.

[0025] In one embodiment, the supporting base has a clearance step, the upper surface of the clearance step being the first supporting surface, and the limiting base is located on the lower surface of the clearance step to make the second supporting surface coplanar with the first supporting surface.

[0026] This design allows for a reduction in the overall thickness of the assembled support block and limiting block.

[0027] Test fixture, including:

[0028] Test subject; and

[0029] As described above, the test subject is mounted on the mounting platform and used for electrical connection with the chip mounted on the mounting platform.

[0030] With this setup, when the AA equipment is cutting, the limiting blocks and pressure blocks related to chip installation can be directly replaced without leveling, which greatly improves the cutting speed, shortens the product testing cycle, and increases production efficiency. Attached Figure Description

[0031] Figure 1 A schematic diagram of the installation platform in one embodiment provided in this application;

[0032] Figure 2 for Figure 1 Schematic diagram of the structure of the central support base block;

[0033] Figure 3 for Figure 1 Schematic diagram of the middle limiting bottom block;

[0034] Figure 4 for Figure 3 Side view of the limiting base block shown;

[0035] Figure 5 for Figure 1 Schematic diagram of the structure of the intermediate pressure block;

[0036] Figure 6 for Figure 1 Schematic diagram of the middle cylinder platform;

[0037] Figure 7 for Figure 6 A schematic diagram of the cylinder platform shown from another perspective;

[0038] Figure 8 for Figure 6 Structural diagram of the cylinder platform, support column, and support plate;

[0039] Figure 9 for Figure 6 A schematic diagram of the middle connector.

[0040] Figure label:

[0041] 10. Cylinder platform; 11. Platform plate; 12. Support column; 13. Support plate; 131. Third guide rail section; 1311. Third guide bar; 132. Upper stop block; 133. Lower stop block; 14. Cylinder body; 15. Connecting seat; 151. Sliding part; 152. Connecting part; 1521. Second guide rail section; 15211. Second guide bar; 1522. Mounting groove; 20. Supporting bottom block; 201. Clearance step; 2021. First support surface; 2022. Lower platform surface ; 21. Fixing part; 22. First guide rail part; 221. First guide bar; 30. Limiting bottom block; 301. Second bearing surface; 302. Limiting groove; 303. Guide slope; 31. Limiting part; 32. Mating part; 321. First snap-fit ​​groove; 33. First pin hole; 40. Pressure block; 401. Second snap-fit ​​groove; 402. Socket; 403. Second pin hole; 50. First spring pin; 60. Second spring pin; 70. Chip; 71. Main board; 72. Flexible circuit board. Detailed Implementation

[0042] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0043] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and 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, and therefore should not be construed as a limitation of this utility model.

[0044] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0045] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0046] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0047] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0048] Before the camera equipment's chip assembly undergoes AA testing, the substrate supporting the chip assembly needs to be precisely leveled. Only after successful leveling can the next step of AA testing proceed. However, when switching machines in the AA equipment, different substrates need to be used to accommodate different chips. Therefore, the substrate needs to be precisely leveled again. This leveling process typically takes at least 80 minutes, which undoubtedly consumes a significant amount of time, leading to low production efficiency and impacting the product's production cycle.

[0049] Therefore, it is necessary to provide an installation platform and testing fixture that can improve the cutting efficiency of AA equipment.

[0050] Please see Figure 1 and Figure 5 , Figure 1 This is a schematic diagram of the installation platform in one embodiment of the present invention. Figure 5 for Figure 1A schematic diagram of the structure of the intermediate pressure block 40. The installation platform provided in this application includes a cylinder platform 10, a supporting base block 20, a limiting base block 30, and a pressure block 40. The supporting base block 20 is installed on the cylinder platform 10 and has a first supporting surface 2021, which is used to support the motherboard 71 of the chip 70. The limiting base block 30 is detachably installed on the supporting base block 20 and has a second supporting surface 301, which is used to support the flexible circuit board 72 of the chip 70. The pressure block 40 is detachably installed on the cylinder platform 10. Flexible circuit boards 72 are arranged at intervals above the second bearing surface 301 and are used to clamp the chip 70 with the limiting base block 30. Specifically, the upper side of the limiting base block 30 is provided with a limiting groove 302 for clamping the flexible circuit board 72 of the chip 70, and the lower side of the pressure block 40 is provided with a socket 402 for electrical connection with the flexible circuit board 72 of the chip 70. For different models of chips 70, it is only necessary to replace the limiting base block 30 with the corresponding limiting groove 302 and the pressure block 40 with the corresponding socket 402. It is understood that in this application, the leveling operation only occurs during the assembly of the support platform and the cylinder platform 10. During subsequent AA equipment cutting, only the limiting block 30 and pressure block 40 that mate with the flexible circuit board 72 (FPC) of the chip 70 need to be replaced, eliminating the need for repeated precision leveling. Actual testing shows that the leveling time has been reduced from 80 minutes to 20 minutes, increasing efficiency by 75%, saving labor costs and product downtime, and shortening the product production cycle. Furthermore, the support block 20 is a universal design, saving material and processing costs for testing equipment. Optionally, in this embodiment, the support block 20 has a clearance step 201, the upper surface of which is the first support surface 2021. The limiting block 30 is located on the lower surface 2022 of the clearance step 201 to make the second support surface 301 coplanar with the first support surface 2021. It is understood that in other embodiments, if the motherboard 71 and the flexible circuit board 72 of the chip 70 are not coplanar, they can also be adapted by designing the thickness of the limiting base block 30.

[0051] Please see Figure 2 and Figure 3 , Figure 2 for Figure 1 Structural diagram of the central support block 20. Figure 3 for Figure 1A schematic diagram of the structure of the middle limiting base block 30 is shown. Optionally, in one embodiment provided in this application, the supporting base block 20 includes a fixing part 21 and a first guide rail part 22. The fixing part 21 is fixedly connected to the cylinder platform 10 and provides a first supporting surface 2021. The first guide rail part 22 extends horizontally from the periphery of the fixing part 21. The limiting base block 30 includes a limiting part 31 and a mating part 32. The limiting part 31 provides a second supporting surface 301. The mating part 32 is located on the side of the limiting part 31 away from the second supporting surface 301 and the mating part 32 slides with the first guide rail part 22. In this way, this sliding disassembly and assembly method limits the degree of freedom of the limiting base block 30, simplifies disassembly and assembly, and helps to improve the cutting efficiency of the AA equipment. Furthermore, in order to avoid secondary leveling, the extension direction of the first guide rail part 22 is horizontal, that is, the limiting base block 30 and the supporting base block 20 are in a horizontal sliding fit, so there is no need to level. Specifically, in order to facilitate the stacking of the limiting base blocks 30, in this embodiment, the upper surface of the first guide rail portion 22 is provided with a first guide strip 221, and the mating portion 32 is provided with a first snap-fit ​​groove 321. The first guide strip 221 is slidably inserted into the first snap-fit ​​groove 321. In this way, multiple limiting base blocks 30 occupy less space when stacked. It is understood that in other embodiments, the first guide strip 221 can also be provided on the limiting base block 30, and the first snap-fit ​​groove 321 can also be provided on the first guide rail portion 22, as long as the limiting base block 30 and the supporting base block 20 can slide horizontally.

[0052] Please see Figure 2 and Figure 4 , Figure 4 for Figure 3 The diagram shows a side view of the limiting base block 30. Optionally, in one embodiment provided in this application, the cross-sectional width of the first guide strip 221 gradually increases vertically upwards, and the groove width of the first snap-fit ​​groove 321 gradually increases from the groove opening to the groove bottom. In this way, the limiting base block 30 can only slide along the extension direction of the first guide strip 221, that is, it has only one degree of freedom, increasing the limiting effect and preventing the limiting base block 30 from slipping off the supporting base block 20 in a direction perpendicular to the first guide strip 221.

[0053] Please refer to the following: Figures 1 to 3Optionally, in the embodiments provided in this application, the mounting platform further includes a first spring pin 50 mounted on the supporting base block 20, and the limiting base block 30 also has a first pin hole 33 that engages with the first spring pin 50. The engagement of the first spring pin 50 with the first pin hole 33 limits the last degree of freedom of the limiting base block 30, ensuring that the limiting base block 30 will not easily move after being assembled with the supporting base block 20, thus ensuring the stability of the chip 70 installation. The automatic engagement of the spring pin facilitates assembly and improves the installation efficiency of the chip 70. Furthermore, for ease of installation, the limiting base block 30 has a guide slope 303 located at the end of the first engaging groove 321. The guide slope 303 gradually approaches the opening of the first engaging groove 321 from the end towards the center. Specifically, in this embodiment, the angle between the guide slope 303 and the horizontal plane is 45°. Guided by the guide slope 303, the first spring pin 50 is gradually compressed as the limiting base block 30 slides until it automatically pops out when the first pin hole 33 of the limiting base block 30 corresponds to the position of the first spring pin 50, reducing the assembly resistance of the limiting base block 30. In addition, to facilitate manual disassembly of the limiting base block 30 by the operator, the first movable pin of the first spring pin 50 is movably inserted into the first guide rail portion 22 of the base block 20. This also extends the length of the first spring pin 50 inserted into the first pin hole 33, thereby preventing the limiting base block 30 from being accidentally pulled out.

[0054] Please see Figure 1 , Figure 3 and Figure 6 , Figure 6 for Figure 1 A schematic diagram of the structure of the cylinder platform 10 is provided. Optionally, in one embodiment of this application, the cylinder platform 10 is provided with a second guide rail portion 1521, and the upper surface of the second guide rail portion 1521 is provided with a second guide strip 15211. The mounting platform also includes a second spring pin 60 mounted on the mounting platform. The pressure block 40 is provided with a second snap-fit ​​groove 401 that matches the shape of the second guide strip 15211 and a second pin hole 403 that engages with the second spring pin 60. It can be understood that, in order to simplify the operation of the operator, the first spring pin 50 and the second spring pin 60 are standard parts. The extension direction of the first guide strip 221 and the second guide strip 15211 is the same, the difference is that the length and width are different. The specific length or width is adjusted adaptively according to the actual size of the product.

[0055] Please see Figures 6 to 9 , Figure 6 for Figure 1 A schematic diagram of the structure of the cylinder platform 10. Figure 7 for Figure 6 The diagram shows the structure of the cylinder platform 10 from another perspective. Figure 8 forFigure 6 A structural schematic diagram of the cylinder platform 10, support column 12, and support plate 13. Figure 9 for Figure 6 A schematic diagram of the structure of the connecting seat 15. The cylinder platform 10 in this application includes a platform plate 11, a support column 12, a support plate 13, a cylinder body 14, and a connecting seat 15. The support column 12 is fixedly connected to the platform plate 11. The support plate 13 extends horizontally from the periphery of the support column 12. The cylinder body 14 is fixedly connected to one side of the support plate 13. The other side of the support plate 13 is provided with a third guide rail portion 131. The connecting seat 15 is vertically slidably mounted on the third guide rail portion 131. Specifically, the third guide rail portion 131 is a third guide bar 1311. The connecting seat 15 includes a sliding portion 1 that is slidably connected to the third guide bar 1311. A connecting portion 152 is fixedly connected to the upper side of the sliding portion 151. The connecting portion 152 has a mounting groove 1522 that cooperates with the drive rod of the cylinder body 14. The cylinder body 14 drives the connecting portion 152 to drive the entire connecting seat 15 to slide vertically. A second guide strip 15211 for sliding cooperation with the pressure block 40 is provided on the upper surface of the connecting portion 152 of the connecting seat 15. In this way, the cylinder body 14 drives the pressure block 40 to move vertically, thereby driving the socket 402 installed on the pressure block 40 to plug into the flexible circuit board 72 (FPC) of the chip 70, realizing automatic plugging. The vertically arranged support plate 13 serves as the structural basis for the vertical movement of the pressure block 40. The structure is stable and not easy to shake. The cylinder body 14 only needs to provide driving force, which improves the sliding accuracy of the pressure block 40 from the structure, ensuring that the socket 402 and the flexible circuit board 72 of the chip 70 are accurately plugged in, which is beneficial to protecting the chip 70. Optionally, the upper end and lower end of the support plate 13 are respectively provided with an upper stop block 132 and a lower stop block 133 to limit the vertical sliding range of the connecting seat 15.

[0056] This application also relates to a test fixture, including a test body and a mounting platform as described in the above embodiments. The test body is mounted on the mounting platform and is used for electrical connection with the chip 70 mounted on the mounting platform. Specifically, the test body is electrically connected to a socket 402 on the pressure block 40. During the AA equipment cutting process, the limiting base block 30 and pressure block 40 related to the installation of the chip 70 can be directly replaced without leveling, which greatly improves the cutting speed, shortens the product testing cycle, and improves production efficiency.

[0057] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0058] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An installation platform for mounting chips, characterized in that, include: Cylinder platform; A support base block is mounted on the cylinder platform and has a first support surface, which is used to support the motherboard of the chip. A limiting base block is detachably mounted on the supporting base block and has a second supporting surface, the second supporting surface being used to support the flexible circuit board of the chip; as well as A pressure block, which is detachably mounted on the cylinder platform, is spaced above the second bearing surface and is used to clamp the flexible circuit board of the chip with the limiting bottom block.

2. The installation platform according to claim 1, characterized in that, The supporting base includes a fixing part fixedly connected to the cylinder platform and providing the first supporting surface, and a first guide rail part extending horizontally from the fixing part. The limiting base includes a limiting part providing the second supporting surface and a mating part located on the side of the limiting part opposite to the second supporting surface and slidingly engaging with the first guide rail part.

3. The installation platform according to claim 2, characterized in that, The upper surface of the first guide rail is provided with a first guide strip, and the mating part is provided with a first snap-fit ​​groove, wherein the first guide strip is slidably inserted into the first snap-fit ​​groove.

4. The installation platform according to claim 3, characterized in that, The cross-sectional width of the first guide strip gradually increases vertically upwards; The width of the first snap-fit ​​groove gradually increases from the opening to the bottom of the groove.

5. The installation platform according to claim 4, characterized in that, The installation platform also includes a first spring pin installed on the supporting base block, and the limiting base block also has a first pin hole that engages with the first spring pin.

6. The installation platform according to claim 5, characterized in that, The first movable pin of the first spring pin is movably inserted into the supporting base block.

7. The installation platform according to claim 5, characterized in that, The limiting bottom block has a guide slope located at the end of the first snap-fit ​​groove, and the guide slope gradually approaches the opening of the first snap-fit ​​groove from the end of the first snap-fit ​​groove towards the middle.

8. The installation platform according to claim 3, characterized in that, The cylinder platform is provided with a second guide rail, and a second guide strip is protruding from the upper surface of the second guide rail. The mounting platform also includes a second spring pin installed on the mounting platform. The pressure block is provided with a second snap-fit ​​groove that matches the shape of the second guide strip and a second pin hole that engages with the second spring pin.

9. The installation platform according to any one of claims 1 to 7, characterized in that, The supporting base has a clearance step, the upper surface of the clearance step is the first supporting surface, and the limiting base is located on the lower surface of the clearance step to make the second supporting surface coplanar with the first supporting surface.

10. A test fixture, characterized in that, include: Test subject; and The test subject is mounted on the mounting platform as described in any one of claims 1 to 9 and is used for electrical connection with a chip mounted on the mounting platform.

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