High-precision HDI board test fixture

Abstract

The utility model belongs to the field of detection jigs, and particularly relates to a high-precision HDI plate test jig which comprises a workbench, a gantry frame, a first pressing device, a second pressing device, a pressing plate and a buffer device, and the upper end of the workbench is provided with a test plate for detection. The gantry frame is arranged on the workbench. The first pressing device is located in the gantry frame and moves up and down in the gantry frame. The second pressing device is located at the driving end of the first pressing device, and the second pressing device is driven by the first pressing device to move up and down. The pressing plate is located at the driving end of the second pressing device, and the pressing plate is driven by the second pressing device to move close to or away from the test plate. And the buffer device is positioned at the lower end of the test plate and is elastically connected with the test plate. Through cooperative work of the gantry frame, the first pressing device and the second pressing device, the pressing plate can accurately position and contact each test point of the HDI plate.

Description

Technical Field

[0001] The utility model belongs to the field of detection technology, and in particular relates to a high-precision HDI board testing fixture. Background Art

[0002] HDI boards are highly complex due to their high density of circuits and component connections. This makes testing HDI boards particularly important during the manufacturing process. The test fixture needs to be able to accurately locate and contact each test point of the HDI board to ensure that its electrical and mechanical properties meet the requirements. The existing background technology only focuses on the characteristics and testing requirements of HDI boards, as well as the design and performance of each component in the test fixture. During the manufacturing and use process, it is also necessary to consider how to ensure the accuracy of the test fixture to meet the efficient and accurate testing of HDI boards. Utility Model Content

[0003] The utility model aims to provide a high-precision HDI board test fixture, aiming to solve the problem that the HDI board test is not accurate enough.

[0004] To achieve the above purpose, the utility model provides a high-precision HDI board test fixture, including:

[0005] A workbench with a test plate on the top for testing.

[0006] Gantry frame, installed on the workbench.

[0007] The first pressing device is located in the gantry frame and moves up and down in the gantry frame.

[0008] The second pressing device is located at the driving end of the first pressing device, and is driven by the first pressing device to move up and down.

[0009] The pressing plate is located at the driving end of the second pressing device and is driven by the pressing plate to move closer to or away from the test plate.

[0010] The buffer device is located at the lower end of the test plate and is elastically connected to the test plate.

[0011] Furthermore, the first pressing device includes a first telescopic cylinder, a first guide rod and a lifting platform. The first guide rod is provided with two groups, and the two groups are placed in parallel under the gantry frame, one end of which is connected to the workbench, and the other end is connected to the inner wall of the top of the gantry frame; the first telescopic cylinder is located on the workbench, and the driving end of the first telescopic cylinder is connected to the lifting platform, and the other end of the lifting platform is slidably connected to the first guide rod. Driven by the first telescopic cylinder, the lifting platform moves up and down on the first guide rod.

[0012] Furthermore, the second pressing device is located on the lifting platform, and includes a second telescopic cylinder, a second guide rod and a support plate; one end of the second guide rod is connected to the lifting platform, and the other end is connected to the support plate; the second telescopic cylinder is located on the support plate, and its driving end passes through the support plate and the lifting platform in turn to drive the pressing plate to move up and down.

[0013] Furthermore, a connecting plate is slidably connected to the second guide rod, and a plurality of pillars are provided at the lower end thereof, which pass through the lifting platform and are connected to the pressing plate. The driving end of the second telescopic cylinder is connected to the upper end of the connecting plate, and the connecting plate is driven to drive the pressing plate to move up and down.

[0014] Furthermore, the HDI board is placed on a test board, a plurality of electrically connected ejector pins are provided at the lower end of the test board, and a buffer device is connected to the lower end of the ejector pins to reset the ejector pins.

[0015] Furthermore, a cavity with an opening facing upward is connected below the workbench, and the buffer device includes a buffer spring and a buffer plate. The lower end of the ejector is connected to the buffer plate, one end of the buffer spring is connected to the buffer plate, and the other end is connected to the inner wall of the cavity to reset the ejector.

[0016] Furthermore, a placement slot for placing the HDI board is provided in the test board, and the height after the HDI board is placed is lower than the height of the highest end of the test board; and the ejector pin is located at the lower end of the placement slot.

[0017] Furthermore, handles for carrying are provided on both sides of the workbench.

[0018] Furthermore, the workbench is also provided with a start switch for turning on or off the detection.

[0019] The above one or more technical solutions in the high-precision HDI board test fixture provided by the embodiment of the utility model have at least the following technical effects:

[0020] In this design, 1. Through the coordinated work of the gantry frame, the first pressing device and the second pressing device, the pressing plate can accurately locate and contact each test point of the HDI board. This design ensures the high precision of the test fixture, so that the electrical and mechanical properties of the HDI board can be accurately detected. 2. The layered design of the first pressing device and the second pressing device makes the pressing process more stable and controllable. This layer-by-layer pressing mechanism can reduce errors during the test and improve the accuracy of the test. 3. The setting of the buffer device can effectively absorb the impact force during the pressing process and avoid potential damage to the HDI board. This not only protects the HDI board from impact damage, but also ensures the reliability of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1 A structural diagram of a high-precision HDI board test fixture provided in an embodiment of the utility model.

[0023] Figure 2 This is a front view of a high-precision HDI board test fixture provided in an embodiment of the utility model.

[0024] Description of main reference numerals:

[0025] 100, workbench; 110, test board; 120, gantry frame;

[0026] 200, first pressing device; 210, first telescopic cylinder; 220, first guide rod; 230, lifting platform; 300, second pressing device; 310, second telescopic cylinder; 320, second guide rod; 330, support plate; 400, pressing plate; 410, connecting plate; 420, pillar; 430, ejector pin;

[0027] 500, buffer device; 510, buffer spring; 520, buffer plate; 530, cavity;

[0028] 600, placement slot;

[0029] 700. Handle; 710. Start switch. DETAILED DESCRIPTION

[0030] The following describes the embodiments of the present invention in detail. Figures 1-2 , wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. Figures 1-2 The described embodiments are exemplary and are intended to be used to explain the embodiments of the present invention, but should not be construed as limiting the present invention.

[0031] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0033] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0034] In the embodiment of the utility model, this case provides a high-precision HDI board test fixture, including a workbench 100, a gantry frame 120, a first pressing device 200, a second pressing device 300, a pressing plate 400 and a buffer device 500, and a test board 110 for detection is provided at the upper end of the workbench 100. The gantry frame 120 is arranged on the workbench 100. The first pressing device 200 is located in the gantry frame 120 and moves up and down in the gantry frame 120. The second pressing device 300 is located at the driving end of the first pressing device 200, and the second pressing device 300 moves up and down under the driving thereof. The pressing plate 400 is located at the driving end of the second pressing device 300, and the pressing plate 400 moves close to or away from the test board 110 under the driving thereof. The buffer device 500 is located at the lower end of the test board 110 and is elastically connected to the test board 110.

[0035] Specifically, through the coordinated work of the gantry frame 120, the first pressing device 200 and the second pressing device 300, the pressing plate 400 can accurately locate and contact each test point of the HDI board. This design ensures the high precision of the test fixture, so that the electrical and mechanical properties of the HDI board can be accurately detected; the layered design of the first pressing device 200 and the second pressing device 300 makes the pressing process more stable and controllable. This layer-by-layer pressing mechanism can reduce errors in the test process and improve the accuracy of the test; the setting of the buffer device 500 can effectively absorb the impact force during the pressing process and avoid potential damage to the HDI board. This can not only protect the HDI board from impact damage, but also ensure the reliability of the test results.

[0036] In another embodiment of the utility model, the first pressing device 200 includes a first telescopic cylinder 210, a first guide rod 220 and a lifting platform 230. The first guide rod 220 is provided with two groups, and the two groups are placed in parallel under the gantry frame 120, one end of which is connected to the workbench 100, and the other end is connected to the inner side wall of the top of the gantry frame 120; the first telescopic cylinder 210 is located on the workbench 100, and the driving end of the first telescopic cylinder 210 is connected to the lifting platform 230, and the other end of the lifting platform 230 is slidably connected to the first guide rod 220. Under the drive of the first telescopic cylinder 210, the lifting platform 230 moves up and down on the first guide rod 220. Specifically, the first guide rod 220 is provided with two groups and is placed in parallel under the gantry frame 120. This design ensures the stability and linearity of the lifting platform 230 during the up and down movement, thereby ensuring the accurate positioning of the test fixture on the test points of the HDI board. The lifting platform 230 is slidably connected to the first guide rod 220, ensuring the stability and stability of the lifting platform 230 during the up and down movement. The driving end of the first telescopic cylinder 210 is connected to the lifting platform 230. Through the telescopic movement of the telescopic cylinder, the lifting height and speed of the lifting platform 230 can be accurately controlled, further ensuring the accuracy and stability of the test fixture.

[0037] In another embodiment of the utility model, the second pressing device 300 is located on the lifting platform 230, and includes a second telescopic cylinder 310, a second guide rod 320 and a support plate 330. One end of the second guide rod 320 is connected to the lifting platform 230, and the other end is connected to the support plate 330; the second telescopic cylinder 310 is located on the support plate 330, and its driving end passes through the support plate 330 and the lifting platform 230 in sequence to drive the pressing plate 400 to move up and down. Specifically, the second pressing device 300 is located on the lifting platform 230, which means that its movement is based on the precise positioning and stable movement of the first pressing device 200. Through the design of the second pressing device 300, more precise and stable control can be achieved, thereby ensuring that the test fixture can accurately contact each test point of the HDI board. The layered pressing design of the first pressing device 200 and the second pressing device 300 further improves the accuracy, stability, load-bearing capacity and flexibility of the high-precision HDI board test fixture.

[0038] In another embodiment of the utility model, a connecting plate 410 is slidably connected to the second guide rod 320, and a plurality of pillars 420 are provided at the lower end thereof, which pass through the lifting platform 230 and are connected to the pressing plate 400. The driving end of the second telescopic cylinder 310 is connected to the upper end of the connecting plate 410, and the pressing plate 400 is driven to move up and down by driving the connecting plate 410. Specifically, the driving end of the second telescopic cylinder 310 does not directly contact the pressing plate 400, and the connecting plate 410 is first controlled to move smoothly on the second guide rod 320, and the connecting plate 410 is connected to a plurality of pillars 420, and the pillars 420 are then connected to the pressing plate 400, so that the pressing plate 400 is not easily swayed left and right by a single influence, and the accuracy, stability, load-bearing capacity and flexibility of the high-precision HDI board test fixture are further improved.

[0039] In another embodiment of the utility model, the HDI board is placed on the test board 110, and a plurality of electrically connected ejector pins 430 are provided at the lower end of the test board 110, and a buffer device 500 is connected to the lower end of the ejector pins 430 to reset the ejector pins 430. Specifically, a plurality of electrically connected ejector pins 430 are provided on the test board 110, and the ejector pins 430 test the HDI board, and the HDI board is contacted with the ejector pins 430 by a downward pressure method, which further improves the accuracy, stability, load-bearing capacity and flexibility of the high-precision HDI board test fixture.

[0040] In another embodiment of the utility model, a cavity 530 with an opening facing upward is connected to the bottom of the workbench 100, and the buffer device 500 includes a buffer spring 510 and a buffer plate 520. The lower end of the ejector pin 430 is connected to the buffer plate 520. One end of the buffer spring 510 is connected to the buffer plate 520, and the other end is connected to the inner wall of the cavity 530 to reset the ejector pin 430. Specifically, the buffer device 500 is used for resetting, and the HDI board is pressed down by the pressure plate 400 to cause the ejector pin 430 to move downward, and the power-on test is started at this time. After the test is completed, the pressure plate 400 is released, and the buffer spring 510 resets the buffer plate 520 and lifts it upward, and then the HDI board is lifted up by force. This method makes the HDI board not easily crushed, and further improves the accuracy, stability, load-bearing capacity and flexibility of the high-precision HDI board test fixture.

[0041] In another embodiment of the utility model, a placement groove 600 for placing an HDI board is provided in the test board 110, and the height after the HDI board is placed is lower than the height of the highest end of the test board 110; the ejector pin 430 is located at the lower end of the placement groove 600. Specifically, the highest end of the placement groove 600 is higher than the HDI board, and the pressing plate 400 can stably press the HDI board to prevent it from sliding out due to unstable left and right contact.

[0042] In another embodiment of the utility model, handles 700 for carrying are provided on both sides of the workbench 100 to facilitate movement.

[0043] In another embodiment of the utility model, the workbench 100 is further provided with a start switch 710 for turning on or off the detection.

[0044] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-precision HDI board test fixture for testing HDI boards, characterized in that: include A workbench with a test plate for testing at the top; A gantry frame is arranged on the workbench; A first pressing device is located in the gantry frame and moves up and down in the gantry frame; A second pressing device, located at a driving end of the first pressing device, and driven by the second pressing device to move up and down; A pressing plate, located at the driving end of the second pressing device, and driven by the pressing plate to move closer to or away from the test plate; The buffer device is located at the lower end of the test plate and is elastically connected to the test plate.

2. The high-precision HDI board test fixture according to claim 1, characterized in that: The first pressing device includes a first telescopic cylinder, a first guide rod and a lifting platform. The first guide rod is provided with two groups, and the two groups are placed in parallel under the gantry frame, one end of which is connected to the workbench, and the other end is connected to the inner side wall of the top of the gantry frame; the first telescopic cylinder is located on the workbench, and the driving end of the first telescopic cylinder is connected to the lifting platform, and the other end of the lifting platform is slidably connected to the first guide rod. Under the drive of the first telescopic cylinder, the lifting platform moves up and down on the first guide rod.

3. The high-precision HDI board test fixture according to claim 2, characterized in that: The second pressing device is located on the lifting platform, and includes a second telescopic cylinder, a second guide rod and a support plate; one end of the second guide rod is connected to the lifting platform, and the other end is connected to the support plate; the second telescopic cylinder is located on the support plate, and its driving end passes through the support plate and the lifting platform in turn to drive the pressing plate to move up and down.

4. The high-precision HDI board test fixture according to claim 3, characterized in that: A connecting plate is slidably connected to the second guide rod, and a plurality of pillars are provided at the lower end thereof, passing through the lifting platform and connected to the pressing plate. The driving end of the second telescopic cylinder is connected to the upper end of the connecting plate, and the pressing plate is driven to move up and down by driving the connecting plate.

5. The high-precision HDI board test fixture according to claim 1, characterized in that: The HDI board is placed on the test board. A plurality of electrically connected ejector pins are provided at the lower end of the test board. The lower ends of the ejector pins are connected to the buffer device to reset the ejector pins.

6. The high-precision HDI board test fixture according to claim 5, characterized in that: A cavity opening upward is connected below the workbench, the buffer device includes a buffer spring and a buffer plate, the lower end of the ejector pin is connected to the buffer plate, one end of the buffer spring is connected to the buffer plate, and the other end is connected to the inner wall of the cavity to reset the ejector pin.

7. The high-precision HDI board test fixture according to claim 6, characterized in that: The test board is provided with a placement groove for placing the HDI board, and the height after the HDI board is placed is lower than the height of the highest end of the test board; the ejector pin is located at the lower end of the placement groove.

8. The high-precision HDI board test fixture according to any one of claims 1 to 7, characterized in that: Handles for carrying are arranged on both sides of the workbench.

9. The high-precision HDI board test fixture according to any one of claims 1 to 7, characterized in that: The workbench is also provided with a start switch for turning on or off the detection.

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