Height gauge with symmetrical support structure

Abstract

The utility model discloses a height gauge with symmetrical support structure belongs to height gauge technical field, including the placement platform, the top of placement platform is provided with adjusting assembly, adjusting assembly includes the Y -axis movement module of installation in the top of placement platform, the Z -axis movement module of installation on Y -axis movement module and the X -axis movement module of installation on Y -axis movement module, the height gauge body is installed through the connecting assembly on X -axis movement module, the utility model discloses Y -axis movement module, Z -axis movement module and the three -axis cooperation of X -axis movement module, have realized the multi -dimensional height detection of the top pin top, have satisfied the use demand of comprehensive detection, not only has eliminated the blind area of the present device to the pin corner detection, has improved the accuracy of the pin detection, has avoided the damage of bad pin to the component, can effectively improve the detection efficiency still, has reduced the complexity of detection operation.

Description

Technical Field

[0001] This utility model belongs to the field of height gauge technology, specifically relating to a height gauge with a symmetrical support structure. Background Technology

[0002] In chip-to-substrate interconnection processes (such as BGA packaging), "three-segment ejector pins" are often used as "support or positioning ejection components." The three-segment ejector pin is a core component of the pick-and-place machine, mainly used for "precise wafer support" or "chip positioning." During the wafer peeling process from the bottom film, the ejector pin needs to support the wafer from below to ensure precise contact between the wafer and each ejection segment. If the height of a certain corner of the ejector pin is too low, it will cause the wafer to tilt locally, resulting in local stress concentration and cracks. Therefore, a height gauge is needed to detect the height of a certain corner of the ejector pin.

[0003] However, existing height gauges typically use a "single-point measurement" or "multi-point averaging in the central area" method, which only collects height data of the "center of the circular plane" or "near the center" of each segment of the pin, without covering the "edge (corner) area".

[0004] If the center height of the upper section of the ejector pin is 1.000mm (qualified), but the corner is recessed to 0.987mm due to machining error (deviation 13μm, unqualified), the existing solution will judge it as "qualified" because the corner is not measured. Since the existing measurement solution cannot identify the abnormal corner height, these "hidden unqualified" ejector pins will cause damage to the parts in subsequent stages, resulting in a sharp increase in the product defect rate. Utility Model Content

[0005] The purpose of this invention is to provide a height gauge with a symmetrical support structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a height gauge with a symmetrical support structure, including a placement platform. An adjustment assembly is provided on the top of the placement platform. The adjustment assembly includes a Y-axis moving module mounted on the top of the placement platform, a Z-axis moving module mounted on the Y-axis moving module, and an X-axis moving module mounted on the Y-axis moving module. The height gauge body is mounted on the X-axis moving module via a connecting assembly. The connecting assembly includes a fixing block one and a fixing block two located on both sides of the height gauge body probe. A mounting groove for the height gauge body probe is provided between the fixing block one and the fixing block two. A connecting hole two is provided at the front end of each fixing block one and the fixing block two. A bolt two is threaded into the connecting hole two and threadedly connected to the X-axis moving module through the connecting hole two.

[0007] In a preferred embodiment, a connecting hole is provided on the inner wall of the side of the second fixing block near the first fixing block. A connecting rod is fixedly connected to the side of the first fixing block near the second fixing block. The connecting rod is inserted into the connecting hole. A bolt is installed on the right side of the connecting hole, and the bolt is threadedly connected to the end of the connecting rod away from the first fixing block.

[0008] In a preferred embodiment, the X-axis moving module includes a support platform, the support platform having a limiting groove inside, and a lead screw being rotatably connected inside the limiting groove.

[0009] In a preferred embodiment, a limiting slider is threadedly connected to the outer side of the lead screw, the limiting slider is slidably connected inside the limiting groove, and a servo motor is fixedly installed on the side of the support platform, the transmission end of the servo motor being driven by the lead screw.

[0010] In a preferred embodiment, the side of the limiting slider is provided with a connecting hole three for the adapter bolt two; the Y-axis moving module, Z-axis moving module and X-axis moving module have the same structure.

[0011] In a preferred embodiment, a control panel is fixedly installed on the top of the placement platform, and a support pad is fixedly installed on the bottom of the placement platform.

[0012] Compared with the prior art, the beneficial effects of this utility model are: This utility model utilizes a three-axis coordinated movement module (Y-axis, Z-axis, and X-axis) to achieve multi-directional height detection of the ejector pin top, meeting the needs of comprehensive testing. It not only eliminates blind spots in existing devices for detecting the edges and corners of the ejector pin, improving the accuracy of ejector pin detection and preventing damage to components from defective ejector pins, but also effectively increases testing efficiency and reduces the complexity of the testing operation. The tungsten steel probe combines high strength and high wear resistance. Precise dimensional control and a rounded tip design ensure the accuracy of the test data while effectively preventing scratches on the ejector pin surface during testing. Fixing blocks one and two not only provide anti-collision protection for the probe but also suppress the shaking of the long probe during testing. The snap-fit ​​structure of the mounting slot further enhances the stability and firmness of the height gauge body installation.

[0013] In this invention, the insertion and connection of the connecting rod with the first connecting hole simplifies the connection process between the first fixing block and the second fixing block, while effectively improving the structural stability after the two are connected and preventing relative displacement during the operation of the device. The threaded connection design of the first bolt makes the disassembly between the first fixing block and the second fixing block more convenient and efficient, providing convenience for the replacement of the probe and the maintenance of the device, and improving the overall efficiency of use. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model; Figure 2 This is a schematic diagram of the overall three-dimensional structure of this utility model; Figure 3 This is a three-dimensional structural diagram of the height gauge body component of this utility model; Figure 4 This is an exploded three-dimensional structural diagram of the connecting component of this utility model; Figure 5 This is a three-dimensional structural diagram of the X-axis moving module component of this utility model.

[0015] In the diagram: 1. Placement platform; 2. Y-axis movement module; 3. Z-axis movement module; 4. X-axis movement module; 5. Height gauge body; 6. Control panel; 7. Support pad; 501. Fixing block one; 502. Fixing block two; 503. Mounting slot; 504. Connecting hole one; 505. Connecting rod; 506. Bolt one; 507. Connecting hole two; 508. Bolt two; 401. Support platform; 402. Limiting slide groove; 403. Lead screw; 404. Limiting slider; 405. Servo motor. Detailed Implementation

[0016] The present invention will be further described below with reference to the embodiments.

[0017] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0018] Please see Figures 1 to 5This utility model provides a height gauge with a symmetrical support structure, including a placement platform 1. An adjustment assembly is provided on the top of the placement platform 1. The adjustment assembly includes a Y-axis moving module 2 mounted on the top of the placement platform 1, a Z-axis moving module 3 mounted on the Y-axis moving module 2, and an X-axis moving module 4 mounted on the Y-axis moving module 2. The Y-axis moving module 2, Z-axis moving module 3, and X-axis moving module 4 cooperate with each other to drive the height gauge body 5 in the X, Y, and Z axes, thereby enabling the detection of the height of the top plane of the pin in four directions: upper right, lower right, lower left, and upper left. The height gauge body 5 is mounted on the X-axis moving module 4 via a connecting assembly. The height gauge body 5 is made of tungsten carbide cylindrical probe with a precisely controlled diameter of 0.5mm and a tip polished to an R0.05mm arc shape to avoid scratches. On the surface of the ejector pin, the connecting assembly includes a first fixing block 501 and a second fixing block 502 located on both sides of the probe of the height gauge body 5. The installation of the first fixing block 501 and the second fixing block 502 can protect the probe at the bottom of the height gauge body 5, preventing it from being hit and preventing the long probe from shaking. An installation groove 503 adapted to the probe of the height gauge body 5 is opened between the first fixing block 501 and the second fixing block 502. The installation groove 503 can form a snap-fit ​​with the height gauge body 5, improving the stability and firmness of the height gauge body 5 installation. The front end of the first fixing block 501 and the second fixing block 502 are both provided with a second connecting hole 507. The second bolt 508 is threaded inside the second connecting hole 507. The second bolt 508 passes through the second connecting hole 507 and is threadedly connected to the X-axis moving module 4, which facilitates the installation and disassembly of the height gauge body 5.

[0019] The Y-axis movement module 2, Z-axis movement module 3, and X-axis movement module 4 in the adjustment assembly work together to drive the height gauge body 5 to achieve precise displacement in the X, Y, and Z axes through their respective drive mechanisms. This enables the detection of the height of the top plane of the ejector pin in four directions: upper right, lower right, lower left, and upper left. Fixing block 1 501 and fixing block 2 502 are engaged with the probe of the height gauge body 5 through the opening of the mounting groove 503. Then, bolt 2 508 is threaded through the connecting hole 2 507 and connected to the X-axis movement module 4, thus achieving the fixed installation of the height gauge body 5. The three-axis coordinated operation of the Y-axis moving module 2, Z-axis moving module 3, and X-axis moving module 4 of this utility model enables multi-directional height detection of the top of the ejector pin, meeting the needs of comprehensive testing. This not only eliminates the blind spots in existing devices for detecting the edges and corners of the ejector pin, improving the accuracy of ejector pin detection and preventing damage to components from defective ejector pins, but also effectively improves testing efficiency and reduces the complexity of the testing operation. The tungsten steel probe combines high strength and high wear resistance. Precise size control and a rounded tip design ensure the accuracy of the test data while effectively preventing scratches on the ejector pin surface during testing. Fixing blocks 501 and 502 not only provide anti-collision protection for the probe but also suppress the shaking of the long probe during testing. The snap-fit ​​structure of the mounting slot 503 further enhances the stability and firmness of the height gauge body 5 during installation.

[0020] Specifically, such as Figure 3 and Figure 4 As shown, a connecting hole 504 is provided on the inner side wall of the second fixing block 502 near the first fixing block 501. A connecting rod 505 is fixedly connected to the side of the first fixing block 501 near the second fixing block 502. The connecting rod 505 is inserted into the connecting hole 504, which not only facilitates the connection between the second fixing block 502 and the first fixing block 501, but also improves the stability of the connection between the two. A bolt 506 is installed on the right side of the connecting hole 504, and the bolt 506 is threadedly connected to the end of the connecting rod 505 away from the first fixing block 501, which facilitates the disassembly and assembly of the second fixing block 502 and the first fixing block 501, improving the convenience of disassembly and assembly.

[0021] The connecting rod 505, which is fixedly connected to the side of the fixing block 501 near the fixing block 502, is precisely inserted into the connecting hole 504 opened on the inner wall of the side of the fixing block 502, so as to achieve the initial positioning and connection of the fixing block 501 and the fixing block 502. Then, the bolt 506 installed on the right side of the connecting hole 504 is threaded to the end of the connecting rod 505 away from the fixing block 501, so as to complete the fastening assembly of the fixing block 501 and the fixing block 502.

[0022] In this invention, the insertion and engagement of the connecting rod 505 with the first connecting hole 504 simplifies the connection process between the first fixing block 501 and the second fixing block 502, while effectively improving the structural stability after the connection and preventing relative displacement during device operation. The threaded connection design of the bolt 506 makes the disassembly between the first fixing block 501 and the second fixing block 502 more convenient and efficient, providing convenience for probe replacement and device maintenance, and improving overall efficiency.

[0023] Specifically, such as Figure 1 and Figure 5As shown, the X-axis moving module 4 includes a support platform 401. A limiting groove 402 is formed inside the support platform 401, and a lead screw 403 is rotatably connected inside the limiting groove 402. A limiting slider 404 is threadedly connected to the outside of the lead screw 403. The limiting slider 404 is threadedly connected to the lead screw 403. With the limiting of the limiting groove 402, the rotational motion of the lead screw 403 can be converted into translational motion, thereby realizing the adjustment of the position of the height gauge body 5. The limiting slider 404 is slidably connected inside the limiting groove 402. A servo motor 405 is fixedly installed on the side of the support platform 401. The transmission end of the servo motor 405 is drivenly connected to the lead screw 403.

[0024] The limiting groove 402 inside the support platform 401 of the X-axis moving module 4 provides installation and movement space for the lead screw 403 and the limiting slider 404. After the servo motor 405 fixedly installed on the side of the support platform 401 is started, its transmission end drives the lead screw 403 to rotate inside the limiting groove 402. The limiting slider 404 is connected to the lead screw 403 by a thread. Under the limiting constraint of the limiting groove 402, the rotational motion of the lead screw 403 is converted into linear translational motion along the limiting groove 402, thereby driving the height gauge body 5 installed on the limiting slider 404 to achieve position adjustment in the X-axis direction.

[0025] In this invention, the threaded transmission structure of the lead screw 403 and the limiting slider 404, combined with the limiting function of the limiting groove 402, ensures the accuracy and stability of the height gauge body 5 moving in the X-axis direction, avoiding deviation or shaking during adjustment and improving detection accuracy. The servo motor 405 has the characteristics of rapid response and high control accuracy, and can accurately execute control commands to meet the high precision requirements of height detection for position adjustment, further ensuring the reliability of detection data.

[0026] Specifically, such as Figure 3 and Figure 4 As shown, the side of the limit slider 404 is provided with a connection hole 3 for the adapter bolt 2 508, which makes it convenient for the staff to install and disassemble the height gauge body 5 through the bolt 2 508; the Y-axis moving module 2, Z-axis moving module 3 and X-axis moving module 4 have the same structure.

[0027] The Y-axis moving module 2, Z-axis moving module 3, and X-axis moving module 4 adopt the same structural design, which not only reduces the design and production complexity of parts and lowers manufacturing costs, but also unifies the maintenance and repair methods of each module, improves the versatility and ease of maintenance of the device, and ensures the consistency and accuracy of the three-axis directional adjustment.

[0028] Specifically, such as Figure 1As shown, a control panel 6 is fixedly installed on the top of the placement platform 1. The control panel 6 is electrically connected to the servo motors 405 between the Y-axis movement module 2, the Z-axis movement module 3, and the X-axis movement module 4, respectively. A support pad 7 is fixedly installed on the bottom of the placement platform 1 to increase friction and improve the safety and stability of the placement.

[0029] The centralized control design of Control Panel 6 eliminates the need for staff to operate each moving module individually, simplifying the operation process, improving testing efficiency and ease of operation, and reducing the difficulty of operation.

[0030] Working principle and usage process of this utility model: The staff first placed the placement platform 1 stably on the working surface using the support pad 7 at the bottom, and then carried out the installation operation of the height gauge body 5: First, the height gauge body 5, made of tungsten steel cylindrical probe, was positioned by snapping it into the mounting groove 503 on one side. Then, the connecting rod 505 on the side of the fixing block 1 501 was precisely inserted into the connecting hole 1 504 of the fixing block 2 502. The bolt 1 506 on the right side of the connecting hole 1 504 was threaded and tightened to the connecting rod 505, so that the fixing block 1 501 and the fixing block 2 502 formed a stable clamping structure. Finally, the bolt 2 508 was used to pass through the connecting hole 2 507 at the front end of the fixing block 1 501 and the fixing block 2 502, and was threaded to the connecting hole 3 of the limit slider 404 in the X-axis moving module 4, thus completing the firm installation of the height gauge body 5. During testing, staff send control commands through the control panel 6 on top of the placement platform 1. The control panel 6 is electrically connected to the servo motors 405 of the Y-axis movement module 2, Z-axis movement module 3, and X-axis movement module 4, enabling precise control of the start, stop, and rotation of each servo motor 405. The transmission end of the servo motor 405 drives the lead screw 403 in the limiting slide groove 402 inside the support platform 401 to rotate. The lead screw 403 converts the rotational motion into linear translational motion through the threaded engagement with the limiting slider 404. Under the limiting action of the limiting slide groove 402, the limiting slider 404 smoothly drives the height gauge body 5 to move. The coordinated action of the Y-axis, Z-axis, and X-axis movement modules achieves precise displacement of the height gauge body 5 in the three-axis directions, allowing the probe to perform height detection in four directions: upper right, lower right, lower left, and upper left of the top plane of the ejector pin. The high strength, high wear resistance, and precise dimensional design of the tungsten steel probe ensure the reliability of the detection data. The arc-shaped tip avoids scratching the ejector pin surface. The centralized control panel 6 simplifies the operation process and improves the detection efficiency. After the test is completed or when the probe needs to be maintained or replaced, the staff can unscrew bolt 2 508 to quickly disassemble the height gauge body 5, and unscrew bolt 1 506 to separate fixing block 1 501 and fixing block 2 502. The whole operation process is convenient and efficient, taking into account the test accuracy, operation safety and maintenance convenience.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A height gauge with a symmetrical support structure, comprising a placement platform (1), characterized in that: An adjustment assembly is provided on the top of the placement platform (1). The adjustment assembly includes a Y-axis moving module (2) installed on the top of the placement platform (1), a Z-axis moving module (3) installed on the Y-axis moving module (2), and an X-axis moving module (4) installed on the Y-axis moving module (2). A height gauge body (5) is installed on the X-axis moving module (4) through a connecting assembly. The connecting assembly includes a fixing block one (501) and a fixing block two (502) located on both sides of the probe of the height gauge body (5). An installation groove (503) for the height gauge body (5) probe is provided between the fixing block one (501) and the fixing block two (502). A connecting hole two (507) is provided at the front end of the fixing block one (501) and the fixing block two (502). A bolt two (508) is threaded inside the connecting hole two (507). The bolt two (508) passes through the connecting hole two (507) and is threadedly connected to the X-axis moving module (4).

2. A height gauge with a symmetrical support structure according to claim 1, characterized in that: The second fixing block (502) has a connecting hole (504) on its inner side wall near the first fixing block (501). A connecting rod (505) is fixedly connected to the side of the first fixing block (501) near the second fixing block (502). The connecting rod (505) is inserted into the connecting hole (504). A bolt (506) is installed on the right side of the connecting hole (504), and the bolt (506) is threadedly connected to the end of the connecting rod (505) away from the first fixing block (501).

3. A height gauge with a symmetrical support structure according to claim 1, characterized in that: The X-axis moving module (4) includes a support platform (401), and a limiting groove (402) is provided inside the support platform (401). A lead screw (403) is rotatably connected inside the limiting groove (402).

4. A height gauge with a symmetrical support structure according to claim 3, characterized in that: The lead screw (403) is threaded to a limiting slider (404), which is slidably connected inside the limiting groove (402). A servo motor (405) is fixedly installed on the side of the support platform (401), and the transmission end of the servo motor (405) is drivenly connected to the lead screw (403).

5. A height gauge with a symmetrical support structure according to claim 4, characterized in that: The side of the limiting slider (404) is provided with a connecting hole three for the adapter bolt two (508); the Y-axis moving module (2), Z-axis moving module (3) and X-axis moving module (4) have the same structure.

6. A height gauge with a symmetrical support structure according to claim 1, characterized in that: A control panel (6) is fixedly installed on the top of the placement platform (1), and a support pad (7) is fixedly installed on the bottom of the placement platform (1).

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