A product fixing tool jig for detecting firmness of a chip

Abstract

The application relates to a product fixing tool jig for detecting the firmness of a chip, which is used for fixing a product substrate, so that a moving mechanism arranged above the product fixing tool jig drives the chip on the product substrate in a horizontal direction to detect whether the chip is firm or not. The product fixing tool jig comprises a fixing base, a pressing plate and a pressing mechanism. A replaceable mounting plate is embedded in the fixing base, and a positioning groove for positioning the product substrate is formed in the mounting plate. The pressing plate is detachably arranged on the top surface of the fixing base and covers the mounting plate, and is used for pressing the top surface of the product substrate. The pressing mechanism is arranged on the bottom surface of the fixing base, and is used for lifting the bottom surface of the product substrate to cooperate with the pressing plate to press and fix the product substrate.

Description

Technical Field

[0001] This utility model relates to the field of electronic packaging technology, specifically to a product fixing fixture for testing the chip's firmness. Background Technology

[0002] Chip robustness testing is a critical step in electronic packaging and assembly, designed to ensure the quality of the connection between the chip and the substrate. External factors such as temperature changes and vibrations can cause the chip-substrate connection to loosen or detach, affecting product stability and reliability. Therefore, chip robustness testing effectively simulates real-world usage environments, allowing for the timely detection of soldering or adhesive issues, preventing product malfunctions during use, and ensuring long-term stable operation.

[0003] Existing clamping methods for chip firmness testing mostly employ single-sided clamping or rely solely on the upper surface pressure plate to fix the product substrate. The clamping force path is not closed, which can easily cause slight displacement and warping of the product substrate during horizontal prying, resulting in unstable test readings. At the same time, changing product substrates of different specifications usually requires replacing the entire set of fixtures or cumbersome adjustments, affecting cycle time and consistency. In addition, relying solely on the initial clamping of the upper pressure plate is difficult to ensure that the clamping force is consistent with the substrate support surface, which can easily lead to insufficient clamping or positional deviation, reducing the repeatability and reliability of the test. Utility Model Content

[0004] The purpose of this invention is to provide a product fixing fixture for testing chip firmness. It features a replaceable mounting plate embedded in a fixing base with positioning grooves on the plate. The product substrate is mounted in the positioning grooves, and a detachable pressure plate on the top surface of the fixing base covers and positions the top surface of the product substrate. A clamping mechanism on the bottom surface of the fixing base lifts the product substrate from the bottom, forming a closed mechanical loop of pressure between the upper and lower surfaces. This effectively suppresses displacement and warping of the product substrate when the chip is moved horizontally during testing, improving the fixing stability and testing repeatability of the product substrate. Furthermore, the replaceable mounting plate is suitable for products of different specifications; only the mounting plate needs to be replaced when changing products, reducing changeover time and maintaining consistency in product positioning reference.

[0005] To achieve the above objectives, this utility model provides a product fixing fixture for detecting chip firmness. The product fixing fixture is used to fix a product substrate, allowing a moving mechanism positioned above the product fixing fixture to horizontally move the chip on the product substrate to detect whether the chip is firmly secured. The product fixing fixture includes: A fixed base, wherein a replaceable mounting plate is embedded in the fixed base, and the mounting plate has a positioning groove for positioning the product substrate; A pressure plate is detachably disposed on the top surface of the fixed base and covers the mounting plate, used to press the top surface of the product substrate; A clamping mechanism is provided on the bottom surface of the fixed base, used to lift the bottom surface of the product substrate to cooperate with the pressure plate to clamp and fix the product substrate.

[0006] Optionally, the clamping mechanism includes: shell; At least one movable slide is disposed within the housing and is movable in a direction parallel to the bottom surface of the housing, and the movable slide is provided with a rotatable idler wheel; At least one lifting wedge is disposed inside the housing and corresponds to and engages with the idler wheel; the lifting wedge can move in a direction perpendicular to the bottom surface of the housing. The clamping mechanism is configured to engage with the inclined surface of the lifting wedge via the idler wheel, so that the lifting wedge moves away from the bottom surface of the housing, thereby lifting the fixed base and the mounting plate to lift the bottom surface of the product substrate.

[0007] Optionally, the clamping mechanism further includes: A movable rod is disposed inside the housing and its end extends outward through the side wall of the housing. The movable rod can move in a direction parallel to the bottom surface of the housing. A connecting rod is connected to both the movable rod and the movable slide. A handle assembly is disposed outside the housing and hinged to the moving rod, for driving the moving rod, the connecting rod and the moving slide to move in a direction parallel to the bottom surface of the housing.

[0008] Optionally, the handle assembly includes: A retaining ring is disposed outside the outer casing and sleeved on the moving rod; The handle body is hinged to the moving rod; The connectors are hinged to the end of the handle body and the fixing ring, respectively.

[0009] Optionally, the housing is provided with a plurality of positioning pins, and the pressure plate is provided with a plurality of positioning holes corresponding to the positioning pins. The positioning pins pass through the fixed base and extend into the positioning holes.

[0010] Optionally, the positioning hole includes a large positioning hole and a small positioning hole, and a positioning groove that mates with the small positioning hole is provided on the periphery of the end of the positioning pin. The positioning pin engages with the positioning small hole to lock the pressure plate onto the fixed base, and the positioning pin engages with the positioning large hole to unlock the pressure plate.

[0011] Optionally, the pressure plate is provided with a clearance window for avoiding the moving mechanism and a clearance groove for avoiding the product substrate, and the clearance groove is connected to the clearance window; The fixed base has an adsorption hole that corresponds to the position of the mounting plate and communicates with the inside of the outer shell.

[0012] Optionally, the product fixing fixture for detecting chip firmness further includes: A vacuum suction cup is disposed on the bottom surface of the housing and connected to an external vacuum system. The vacuum suction cup is provided with a vacuum suction head that extends into the housing and is used to adsorb and fix the mounting plate in conjunction with the adsorption hole.

[0013] Optionally, a limiting post is provided at the bottom of the lifting wedge, and a limiting hole is provided on the inner wall of the outer shell to cooperate with the limiting post.

[0014] The beneficial effects of this utility model are as follows: By embedding a replaceable mounting plate in the fixed base and opening a positioning groove on the mounting plate, the product substrate is installed in the positioning groove. The top surface of the product substrate is covered and positioned by a pressure plate detachably set on the top surface of the fixed base, and the product substrate is lifted from the bottom surface by a pressing mechanism set on the bottom surface of the fixed base to form a mechanical closed loop of upper and lower pressure with the pressure plate. This effectively suppresses the displacement and warping of the product substrate when the chip is moved in the horizontal direction for testing, and improves the fixing stability and testing repeatability of the product substrate. At the same time, the replaceable mounting plate can be used for products of different specifications. Only the mounting plate needs to be replaced when changing the model, which reduces the changeover time and maintains the consistency of the product positioning reference.

[0015] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0016] Figure 1 This is a schematic structural diagram of a product fixing fixture for detecting chip firmness according to an embodiment of the present invention; Figure 2 This is a schematic structural diagram of a clamping mechanism for a product fixing fixture used to detect chip firmness, according to an embodiment of the present invention. Figure 3 This is a schematic structural diagram of a handle assembly of a product fixing fixture for detecting chip firmness, according to an embodiment of the present invention. Figure 4 This is a schematic structural diagram of the positioning hole of a product fixing fixture for detecting chip firmness, according to an embodiment of the present invention. Figure 5 This is a schematic structural diagram of a vacuum chuck for a product fixing fixture used to test the chip's firmness, according to an embodiment of the present invention. In the diagram: 1. Fixed base; 11. Adsorption hole; 2. Pressure plate; 21. Positioning hole; 211. Large positioning hole; 212. Small positioning hole; 22. Clearance window; 23. Clearance groove; 3. Pressing mechanism; 31. Outer shell; 311. Limiting insertion hole; 32. Moving slide; 321. Idler wheel; 33. Lifting wedge; 34. Guide rail; 35. Moving rod; 36. Connecting rod; 37. Handle assembly; 371. Fixing ring; 372. Handle body; 373. Connector; 4. Mounting plate; 41. Positioning groove; 5. Positioning pin; 51. Positioning slot; 6. Vacuum suction cup; 61. Vacuum suction head. Detailed Implementation

[0017] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0018] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," 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 do not 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. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0020] Please see Figure 1This application discloses a preferred embodiment of a product fixing fixture for testing chip firmness. The product fixing fixture is used to fix a product substrate, allowing a moving mechanism positioned above the fixture to horizontally move the chip on the product substrate to test its firmness. The product fixing fixture includes a fixing base 1, a pressure plate 2, and a clamping mechanism 3. The fixing base 1 has a replaceable mounting plate 4 embedded within it, and the mounting plate 4 has a positioning groove 41 for positioning the product substrate. The pressure plate 2 is detachably mounted on the top surface of the fixing base 1 and covers the mounting plate 4, used to clamp the top surface of the product substrate. The clamping mechanism 3 is located on the bottom surface of the fixing base 1, used to lift the bottom surface of the product substrate to cooperate with the pressure plate 2 in clamping and fixing the product substrate.

[0021] According to the embodiment of this utility model, a replaceable mounting plate 4 is embedded in the fixed base 1 and a positioning groove 41 is opened on the mounting plate 4. The product substrate is installed in the positioning groove 41. The top surface of the product substrate is covered and positioned by a pressure plate 2 detachably set on the top surface of the fixed base 1. The pressing mechanism 3 set on the bottom surface of the fixed base 1 lifts the product substrate from the bottom surface and forms a mechanical closed loop of upper and lower pressure with the pressure plate 2. This effectively suppresses the displacement and warping of the product substrate when the chip is moved in the horizontal direction for detection, and improves the fixing stability and detection repeatability of the product substrate. At the same time, the replaceable mounting plate 4 can be used for products of different specifications. Only the mounting plate 4 needs to be replaced when changing the model, which reduces the changeover time and maintains the consistency of the product positioning reference.

[0022] The following detailed description uses specific examples: Please see Figure 2 The clamping mechanism 3 includes a housing 31, a movable slide 32, and a lifting wedge 33. At least one movable slide 32 is disposed within the housing 31 and can move in a direction parallel to the bottom surface of the housing 31. A rotatable idler wheel 321 is provided on the movable slide 32. At least one lifting wedge 33 is disposed within the housing 31 and corresponds to and cooperates with the idler wheel 321. The lifting wedge 33 can move in a direction perpendicular to the bottom surface of the housing 31. The clamping mechanism 3 is configured such that the inclined surfaces of the idler wheel 321 and the lifting wedge 33 cooperate, causing the lifting wedge 33 to move away from the bottom surface of the housing 31, thereby lifting the fixed base 1 and the mounting plate 4 to lift the bottom surface of the product substrate. The translation of the movable slide 32 is converted into the vertical displacement of the lifting wedge 33, forming a lifting path with clear force and controllable stroke. The wedge-shaped cooperation between the idler wheel 321 and the lifting wedge 33 reduces friction, improves lifting efficiency and stability, and facilitates obtaining repeatable clamping height and clamping force. In this embodiment, a guide rail 34 is also provided inside the outer casing 31, and a movable slide 32 is slidably mounted on the guide rail 34. There are two movable slides 32 and two lifting wedges 33.

[0023] Further, please see Figure 2The clamping mechanism 3 also includes a moving rod 35, a connecting rod 36, and a handle assembly 37. The moving rod 35 is disposed inside the housing 31 and its end extends outward through the side wall of the housing 31. The moving rod 35 can move in a direction parallel to the bottom surface of the housing 31. The connecting rod 36 is connected to both the moving rod 35 and the moving slide 32. The handle assembly 37 is disposed outside the housing 31 and is hinged to the moving rod 35. It is used to drive the moving rod 35, the connecting rod 36, and the moving slide 32 to move in a direction parallel to the bottom surface of the housing 31. The manual drive handle assembly 37 drives the moving rod 35 to move in a direction parallel to the bottom surface of the housing 31, thereby driving the moving slide 32 to move synchronously via the connecting rod 36, and then lifting the lifting wedge 33 via the idler wheel 321.

[0024] Specifically, please see Figure 3 The handle assembly 37 includes a retaining ring 371, a handle body 372, and a connector 373. The retaining ring 371 is disposed outside the housing 31 and sleeved on the moving rod 35. The handle body 372 is hinged to the moving rod 35. The connector 373 is hinged to both the end of the handle body 372 and the retaining ring 371. The retaining ring 371 sleeved on the moving rod 35, the handle body 372 hinged to the moving rod 35, and the connector 373 hinged to both the end of the handle body 372 and the retaining ring 371 form a stable hinged transmission structure. This structure provides clear stroke feedback and positioning stops during clamping and releasing, ensuring that the direction of movement of the moving rod 35 is consistent with the line of force, further improving the repeatability and safety of the clamping action.

[0025] Further, please see Figures 2 to 4 The housing 31 contains several positioning pins 5, and the pressure plate 2 has several positioning holes 21 that correspond to and cooperate with the positioning pins 5. The positioning pins 5 pass through the fixed base 1 and extend into the positioning holes 21. The positioning holes 21 include a large positioning hole 211 and a small positioning hole 212. The end of the positioning pin 5 has a positioning groove 51 that cooperates with the small positioning hole 212. The positioning pins 5 cooperate with the small positioning holes 212 to lock the pressure plate 2 onto the fixed base 1, and the positioning pins 5 cooperate with the large positioning holes 211 to unlock the pressure plate 2. The positioning pins 5 pass through the fixed base 1 and extend into the positioning holes 21 to achieve positioning and guidance between the pressure plate 2 and the fixed base 1. The positioning pins 5 and the positioning holes 21 provide reliable alignment and orientation during the loading, unloading and sliding of the pressure plate 2, reduce the relative movement of the pressure plate 2, shorten the clamping time and improve the consistency of the clamping position. The diameter of the positioning pin 5 is smaller than the diameter of the positioning large hole 211 and larger than the diameter of the positioning small hole 212. By horizontally sliding the position of the pressure plate 2, the positioning pin 5 is aligned with the positioning small hole 212 or the positioning large hole 211, thereby locking or unlocking the pressure plate 2.

[0026] Further, please see Figure 1The pressure plate 2 has a clearance window 22 for the moving mechanism to avoid interference and a clearance groove 23 for the product substrate to avoid interference. The clearance groove 23 is connected to the clearance window 22. The design of the clearance window 22 and the clearance groove 23 ensures that the moving mechanism above does not interfere with the pressure plate 2 during the toss detection, and allows the product substrate to pass through the clearance groove 23 and extend to both sides of the pressure plate 2 to rest on the fixed base 1, avoiding interference with the pressure plate 2.

[0027] Please see Figure 2 and Figure 3 The mounting base 1 has an adsorption hole 11 corresponding to the position of the mounting plate 4 and communicating with the housing 31. The product fixing fixture also includes a vacuum suction cup 6, which is located on the bottom surface of the housing 31 and connected to an external vacuum system. The vacuum suction cup 6 has a vacuum suction head 61 extending into the housing 31, used to adsorb and fix the mounting plate 4 in conjunction with the adsorption hole 11. The vacuum suction cup 6, in conjunction with the adsorption hole 11, can quickly adsorb and release the mounting plate 4 without disassembling the mechanical fasteners, facilitating rapid replacement of the mounting plate 4, thus quickly adapting to different product specifications and shortening changeover time. Vacuum adsorption fixing of the mounting plate 4 also improves the adhesion stability between the mounting plate 4 and the mounting base 1.

[0028] Specifically, please see Figure 2 The lifting wedge 33 is provided with a limiting post at its bottom, and the inner wall of the outer shell 31 is provided with a limiting hole 311 that mates with the limiting post. This limiting engagement provides vertical guidance and travel boundary for the lifting wedge 33, preventing overtravel and misalignment during the lifting process, which would affect the lifting and pressing of the fixed base 1 and the product substrate.

[0029] During operation, firstly, select the appropriate mounting plate 4 according to the specifications of the product to be tested, place the mounting plate 4 on the fixed base 1, and use the vacuum suction cup 6 and vacuum suction head 61 to cooperate with the suction hole 11 to achieve adsorption and fixation; put the pressure plate 2 in the unlocked state at the positioning pin 5, open the pressure plate 2, and place the product substrate into the positioning groove 41 of the mounting plate 4, so that the product substrate passes through the clearance groove 23 and extends to both sides of the pressure plate 2; reset the pressure plate 2 and make the positioning pin 5 cooperate with the positioning hole 212 to lock the pressure plate 2, and then the operator drives the moving rod through the handle assembly 37. 35 and the movable slide 32 cause the idler wheel 321 to move along the inclined surface of the lifting wedge 33 and drive the lifting wedge 33 to rise vertically, lifting the fixed base 1 and the mounting plate 4 from the bottom surface, forming an upper and lower pressure against the pressure plate 2 to clamp the product substrate; start the upper moving mechanism to move the chip in the horizontal direction and observe whether the chip is detached from the product substrate to complete the firmness judgment; after the test is completed, reverse the operation handle assembly 37 to lower the lifting wedge 33 to release the pressure, unlock the pressure plate 2 and take out the product; when it is necessary to change the type, the vacuum adsorption can be released and the mounting plate 4 can be replaced.

[0030] 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.

[0031] 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. A product fixing fixture for testing the firmness of chips, characterized in that, The product fixing fixture is used to fix the product substrate, so that the moving mechanism disposed above the product fixing fixture can move the chip on the product substrate in the horizontal direction to detect whether the chip is secure. The product fixing fixture includes: A fixed base, wherein a replaceable mounting plate is embedded in the fixed base, and the mounting plate has a positioning groove for positioning the product substrate; A pressure plate is detachably disposed on the top surface of the fixed base and covers the mounting plate, used to press the top surface of the product substrate; A clamping mechanism is provided on the bottom surface of the fixed base, used to lift the bottom surface of the product substrate to cooperate with the pressure plate to clamp and fix the product substrate.

2. The product fixing fixture for detecting chip firmness according to claim 1, characterized in that, The clamping mechanism includes: shell; At least one movable slide is disposed within the housing and is movable in a direction parallel to the bottom surface of the housing, and the movable slide is provided with a rotatable idler wheel; At least one lifting wedge is disposed inside the housing and corresponds to and engages with the idler wheel; the lifting wedge can move in a direction perpendicular to the bottom surface of the housing. The clamping mechanism is configured to engage with the inclined surface of the lifting wedge via the idler wheel, so that the lifting wedge moves away from the bottom surface of the housing, thereby lifting the fixed base and the mounting plate to lift the bottom surface of the product substrate.

3. The product fixing fixture for detecting chip firmness according to claim 2, characterized in that, The clamping mechanism further includes: A movable rod is disposed inside the housing and its end extends outward through the side wall of the housing. The movable rod can move in a direction parallel to the bottom surface of the housing. A connecting rod is connected to both the movable rod and the movable slide. A handle assembly is disposed outside the housing and hinged to the moving rod, for driving the moving rod, the connecting rod and the moving slide to move in a direction parallel to the bottom surface of the housing.

4. The product fixing fixture for detecting chip firmness according to claim 3, characterized in that, The handle assembly includes: A retaining ring is disposed outside the outer casing and sleeved on the moving rod; The handle body is hinged to the moving rod; The connectors are hinged to the end of the handle body and the fixing ring, respectively.

5. The product fixing fixture for detecting chip firmness according to claim 2, characterized in that, The housing is provided with a number of positioning pins, and the pressure plate is provided with a number of positioning holes that correspond to and cooperate with the positioning pins. The positioning pins pass through the fixed base and extend into the positioning holes.

6. The product fixing fixture for detecting chip firmness according to claim 5, characterized in that, The positioning hole includes a large positioning hole and a small positioning hole, and a positioning groove that mates with the small positioning hole is provided on the periphery of the end of the positioning pin. The positioning pin engages with the positioning small hole to lock the pressure plate onto the fixed base, and the positioning pin engages with the positioning large hole to unlock the pressure plate.

7. The product fixing fixture for detecting chip firmness according to claim 2, characterized in that, The pressure plate is provided with a clearance window for avoiding the moving mechanism and a clearance groove for avoiding the product substrate, and the clearance groove is connected to the clearance window. The fixed base has an adsorption hole that corresponds to the position of the mounting plate and communicates with the inside of the outer shell.

8. The product fixing fixture for detecting chip firmness according to claim 7, characterized in that, Also includes: A vacuum suction cup is disposed on the bottom surface of the housing and connected to an external vacuum system. The vacuum suction cup is provided with a vacuum suction head that extends into the housing and is used to adsorb and fix the mounting plate in conjunction with the adsorption hole.

9. The product fixing fixture for detecting chip firmness according to claim 2, characterized in that, The bottom of the lifting wedge is provided with a limiting post, and the inner wall of the outer shell is provided with a limiting hole that cooperates with the limiting post.

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