Clamping table for circuit board test tool

Abstract

The utility model discloses a clamping table for a circuit board test tool, which comprises a base, a telescopic cylinder and a needle plate, the top of the upper end of the base is welded with the base, the upper end of the base is provided with a mounting plate, the middle part of the mounting plate is provided with the telescopic cylinder, and the telescopic end of the telescopic cylinder is connected with a sliding block; and a needle plate is fastened in the middle of the upper end of the base through a bolt. When the clamping table for the circuit board testing tool is used, the telescopic air cylinder serves as a clamping power source of the clamping table, the pressing plate is driven to descend by controlling descending of the telescopic air cylinder, and the circuit board is fixed to the needle plate through the pressing plate, so that the requirement that a detection component on the needle plate detects the circuit board subsequently is met; the needle plate is connected with the circuit board in an embedded connection mode, the needle plate abandons a traditional carrier plate design, a ladder groove for loading the circuit board is directly formed in the needle plate, a limiting groove for assembling a detection part is further formed in the bottom of the needle plate, and the conventional inspection requirement of the circuit board is met.

Description

Technical Field

[0001] This utility model relates to the technical field of circuit board testing equipment, specifically a clamping table for circuit board testing fixtures. Background Technology

[0002] A test fixture is a device used to place the device or sample to be tested onto a test instrument and control the test points for testing. It typically consists of the following key components: a positioning device, a clamping device, a test interface, and a control system. The clamping stage, as a clamping device, serves to position, fix, and protect the circuit board, ensuring that the subsequent test interface and control system can effectively test the circuit board.

[0003] This utility model discloses a circuit board testing fixture (CN221631607U), comprising: a base having a placement area configured to place a circuit board under test; a pressure plate and a lifting device mounted on the base; a window opened on the pressure plate; and a probe assembly mounted on the pressure plate, the probe assembly having probes mounted on it, the probe assembly being configured to be adjustable on the pressure plate and to adjust the position of the probes in the window; wherein, the lifting device is configured to adjust the position of the pressure plate relative to the placement area, so that the probes can contact the test points of the circuit board under test on the placement area through the window. This embodiment solves the technical problem of how to improve the efficiency, convenience, and accuracy of small-batch circuit board testing. However, in use, due to the inconsistent thickness of the circuit boards, hard damage may occur when the pressure plate presses down on the circuit board, and other tools are needed to remove the tested circuit board from the carrier plate, thus reducing testing efficiency and causing inconvenience to the user.

[0004] Therefore, we propose a clamping stage for circuit board testing fixtures. Utility Model Content

[0005] The purpose of this utility model is to provide a clamping table for circuit board testing fixtures to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a clamping table for circuit board testing, comprising a base, a telescopic cylinder and a needle plate, wherein a base is welded to the top of the upper end of the base, and an mounting plate is mounted on the upper end of the base, a telescopic cylinder is mounted in the middle of the mounting plate, and a slider is connected to the telescopic end of the telescopic cylinder, and a needle plate is bolted to the middle of the upper end of the base.

[0007] Preferably, the lower end of the slider is bolted to a pressure plate, and columns are slidably connected to both sides of the slider, with the bottom of the columns fixed to the base.

[0008] Preferably, the needle plate has mounting holes on both sides, and the needle plate is fastened to the base bolts through the mounting holes.

[0009] Preferably, a limiting groove is formed in the middle of the needle plate, and a pressure sensor for detecting pressure is provided in the middle of the limiting groove.

[0010] Preferably, the needle plate has a stepped groove milled around the upper perimeter of the limiting groove, and the stepped groove matches the size of the circuit board.

[0011] Preferably, the ladder groove is provided with blind holes around its perimeter, and a pressure column is embedded in the blind hole. The upper surface of the pressure column is bonded with an anti-slip pad, and the lower end of the pressure column is embedded with a telescopic column with telescopic function.

[0012] Preferably, a compression spring is fitted onto the long rod of the telescopic column, and a fixing post is fixed to the lower end of the short rod of the telescopic column.

[0013] Preferably, the blind holes of the ladder groove completely accommodate the pressure column, and the pressure column is distributed along the four corners of the ladder groove.

[0014] Preferably, the pressure column is connected to the fixed column via a telescopic column and a compression spring, forming a spring reset connection, and the pressure column contacts the bottom of the circuit board via an anti-slip pad.

[0015] Compared with the prior art, the beneficial effects of this utility model are: when the clamping table for the circuit board testing fixture is used, the telescopic cylinder serves as the clamping power source of the clamping table. By controlling the descent of the telescopic cylinder, the pressure plate is driven to descend, and the pressure plate fixes the circuit board on the needle plate so as to meet the requirements of the subsequent testing components on the needle plate to test the circuit board.

[0016] The needle plate is connected to the circuit board using an embedded connection method. The needle plate abandons the traditional carrier board design and directly opens a ladder groove inside the needle plate for the circuit board to be loaded. In addition, the bottom of the needle plate also has a limiting groove for the assembly of the detection components, which meets the routine inspection requirements of the circuit board.

[0017] The pressure sensor controls the telescopic cylinder to stop pressing down, ensuring that the circuit board will not be damaged. At the same time, as the part that directly contacts the circuit board, the pressure column has a flexible protective anti-slip pad bonded to its upper surface to prevent the pressure column from scratching the surface of the circuit board. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the connection structure between the needle plate and the circuit board of this utility model;

[0020] Figure 3This is a schematic diagram of the needle plate structure of this utility model;

[0021] Figure 4 This is an enlarged schematic diagram of the pressure column structure of this utility model.

[0022] In the diagram: 1. Base; 2. Bracket; 3. Mounting plate; 4. Telescopic cylinder; 41. Slider; 42. Pressure plate; 43. Column; 5. Needle plate; 51. Assembly hole; 52. Limiting groove; 53. Ladder groove; 54. Pressure column; 541. Anti-slip pad; 542. Telescopic column; 543. Compression spring; 544. Fixed column; 55. Pressure sensor. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-4 This utility model provides a technical solution: a clamping table for circuit board testing, including a base 1, a telescopic cylinder 4, and a pin plate 5. The upper end of the base 1 is welded to the top of the base 1, and a mounting plate 3 is mounted on the upper end of the base 1. The telescopic cylinder 4 is mounted in the middle of the mounting plate 3, and a slider 41 is connected to the telescopic end of the telescopic cylinder 4. The pin plate 5 is bolted to the middle of the upper end of the base 1, and a pressure plate 42 is bolted to the lower end of the slider 41. Columns 43 are slidably connected to both sides of the slider 41, and the bottom of the columns 43 is fixed to the base 1. The telescopic cylinder 4 serves as the clamping power source of the clamping table. By controlling the descent of the telescopic cylinder 4, the pressure plate 42 is driven to descend, and the pressure plate 42 fixes the circuit board on the pin plate 5 to meet the subsequent testing of the circuit board by the testing components on the pin plate 5. At the same time, the columns 43 limit the sides of the slider 41 to ensure that the pressure plate 42 descends in a horizontal and vertical state, ensuring that the circuit board can be effectively fixed on the pin plate 5.

[0025] The needle plate 5 has mounting holes 51 on both sides, and the needle plate 5 is fastened to the base 1 by bolts through the mounting holes 51. The needle plate 5 has a limiting groove 52 in the middle, and a pressure sensor 55 for detecting pressure is set in the middle of the limiting groove 52. The needle plate 5 has a stepped groove 53 milled around the upper part of the limiting groove 52, and the stepped groove 53 matches the size of the circuit board. The needle plate 5 is connected to the circuit board by an embedded connection method. The needle plate 5 abandons the traditional carrier board design and directly opens the stepped groove 53 for the circuit board to be loaded inside the needle plate 5. The bottom of the needle plate 5 also has a limiting groove 52 for the assembly of the detection component, which meets the routine inspection requirements of the circuit board.

[0026] Blind holes are provided around the perimeter of the stair groove 53, and pressure posts 54 are embedded in the blind holes. Anti-slip pads 541 are adhered to the upper surface of the pressure posts 54, and telescopic posts 542 with telescopic function are embedded in the lower end of the pressure posts 54. A compression spring 543 is fitted onto the long rod of the telescopic post 542, and a fixing post 544 is fixed to the lower end of the short rod of the telescopic post 542. The blind holes of the stair groove 53 completely accommodate the pressure posts 54, and the pressure posts 54 are distributed along the four corners of the stair groove 53. The pressure posts 54 form a spring-reset connection with the fixing post 544 through the telescopic posts 542 and the compression spring 543. The pressure posts 54 contact the bottom of the circuit board through the anti-slip pads 541. When the circuit board presses down on the pressure posts 54 under pressure, the pressure posts 54 simultaneously cause the telescopic posts 542 to retract. The long rod of the telescopic column 542 is embedded in the short rod. When the circuit board is pressed down to a certain position, the pressure sensor 55 detects the pressure. When the pressure exceeds the rated pressure value, the pressure sensor 55 controls the telescopic cylinder 4 to stop pressing down, ensuring that the circuit board will not be damaged. At the same time, after the circuit board is detected, the telescopic cylinder 4 retracts, the compression spring 543 resets, pushes out the long rod of the telescopic column 542, and drives the pressure column 54 to rise. The four pressure columns 54 are pushed out simultaneously, driving the circuit board to be lifted from the ladder groove 53, making it convenient for the user to pick up the circuit board. As the direct contact part with the circuit board, the pressure column 54 has a flexible protective anti-slip pad 541 glued to its upper surface to prevent the pressure column 54 from scratching the surface of the circuit board.

[0027] Working principle: For this type of circuit board testing fixture, the clamping table first controls the descent of the telescopic cylinder 4, which drives the pressure plate 42 to descend. At this time, the pressure plate 42 fixes the circuit board on the pin plate 5. When the circuit board is pressed by the pressure column 54, the pressure column 54 drives the telescopic column 542 to retract. The long rod of the telescopic column 542 is embedded in the short rod. When the circuit board is pressed down to a certain position, the pressure sensor 55 detects the pressure. When the pressure exceeds the rated pressure value, the pressure sensor 55 controls the telescopic cylinder 4 to stop pressing down. Finally, when the circuit board is tested, the telescopic cylinder 4 retracts, the compression spring 543 resets, pushes out the long rod of the telescopic column 542, and drives the pressure column 54 to rise. The four pressure columns 54 are pushed out simultaneously, driving the circuit board to rise from the ladder groove 53, and the user can then pick up the circuit board.

Claims

1. A clamping table for circuit board testing, comprising a base (1), a telescopic cylinder (4), and a pin plate (5), characterized in that: The upper end of the base (1) is welded with a base (1), and the upper end of the base (1) is supported by an mounting plate (3). The middle part of the mounting plate (3) is supported by a telescopic cylinder (4), and the telescopic end of the telescopic cylinder (4) is connected to a slider (41). The upper middle part of the base (1) is bolted with a needle plate (5). The needle plate (5) has assembly holes (51) on both sides, and the needle plate (5) is bolted to the base (1) through the assembly holes (51). The middle part of the needle plate (5) has a limit groove (52), and the middle part of the limit groove (52) is provided with a pressure sensor (55) for detecting pressure. The needle plate (5) has a stepped groove (53) milled around the upper part of the limit groove (52), and the stepped groove (53) matches the size of the circuit board.

2. The clamping table for circuit board testing fixture according to claim 1, characterized in that: The lower end of the slider (41) is bolted to the pressure plate (42), and the two sides of the slider (41) are slidably connected to the column (43), the bottom of the column (43) is fixed on the base (1).

3. The clamping table for circuit board testing fixture according to claim 1, characterized in that: Blind holes are provided around the ladder groove (53), and a pressure column (54) is embedded in the blind hole. An anti-slip pad (541) is attached to the upper surface of the pressure column (54), and a telescopic column (542) with telescopic function is embedded in the lower end of the pressure column (54).

4. The clamping table for circuit board testing fixture according to claim 3, characterized in that: A compression spring (543) is fitted onto the long rod of the telescopic column (542), and a fixing column (544) is fixed to the lower end of the short rod of the telescopic column (542).

5. The clamping table for circuit board testing fixture according to claim 4, characterized in that: The blind holes of the stepped groove (53) completely accommodate the pressure column (54), and the pressure column (54) is distributed along the four corners of the stepped groove (53).

6. The clamping table for circuit board testing fixture according to claim 5, characterized in that: The pressure column (54) is connected to the fixed column (544) via a telescopic column (542) and a compression spring (543), and the pressure column (544) contacts the bottom of the circuit board via an anti-slip pad (541).

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