PCB (Printed Circuit Board) inspection device

Abstract

The utility model relates to a PCB (printed circuit board) inspection device which comprises an inspection table, a needle plate is mounted on the upper surface of the inspection table, pins are arranged on the upper surface of the needle plate, spring telescopic rods are mounted at four corners of the upper surface of the needle plate, a placing plate is mounted at the end parts of the four spring telescopic rods, and a placing groove is formed in the surface of the placing plate; l-shaped grooves are formed in the inner walls of the four sides of the containing groove, L-shaped blocks are arranged in the L-shaped grooves, and inclined plane parts are arranged at the upper ends of the L-shaped blocks; a pressing plate is mounted on the upper surface of the inspection table through a lifting mechanism, a pressing needle is mounted on the lower surface of the pressing plate, and wedge-shaped blocks in extrusion fit with the inclined surface parts are arranged on the four sides of the lower surface of the pressing plate. By positioning the four sides of the PCB, the PCB can be automatically positioned to an accurate position before the pressing needle is in contact with the PCB, so that the size of the placing groove can be designed to be slightly large, the PCB can be conveniently and quickly taken, and the inspection efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of PCB board manufacturing technology, specifically to a PCB board inspection device. Background Technology

[0002] A PCB, or Printed Circuit Board, is a board that forms electrical connections between electronic components by laying conductive copper foil in a pattern on the surface of an insulating material (such as fiberglass or epoxy resin). It serves as the support for electronic components and is an indispensable part of modern electronic devices.

[0003] During PCB production, power amplifier testing is required. During testing, workers place the PCB in a slot and press it down to move it and make contact with the pins on the lower pin plate to achieve circuit continuity for testing. However, in order to improve the accuracy of PCB positioning, current testing devices usually design the size of the slot to be very close to that of the PCB. Because the gap between the PCB and the slot is very small, it increases the difficulty of picking up the PCB and reduces the efficiency of testing. Utility Model Content

[0004] The purpose of this invention is to provide a PCB board inspection device that effectively solves the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution.

[0006] A PCB board inspection device includes an inspection table. A needle plate is mounted on the upper surface of the inspection table, and needles are provided on the upper surface of the needle plate. Spring telescopic rods are installed at the four corners of the upper surface of the needle plate. A placement plate is mounted on the ends of the four spring telescopic rods, and a placement groove is formed on the surface of the placement plate. L-shaped grooves are formed on the four inner walls of the placement grooves, and L-shaped blocks are arranged inside the L-shaped grooves. The upper end of the L-shaped blocks is provided with a beveled surface. A pressure plate is mounted on the upper surface of the inspection table via a lifting mechanism. Pressure needles are mounted on the lower surface of the pressure plate, and wedge-shaped blocks that press against the beveled surfaces are provided on the four sides of the lower surface of the pressure plate.

[0007] As can be seen, through the squeezing action of the wedge block and the inclined surface, when the lifting mechanism drives the pressure plate to descend, the pressure pin will first contact and squeeze with the inclined surface, thereby driving the L-shaped block to extend out of the L-shaped groove and press against the side of the PCB board. By positioning the four sides of the PCB board, it can be automatically positioned to a precise position before the pressure pin contacts the PCB board. Therefore, the size of the placement groove can be designed to be slightly larger, which facilitates the quick removal of the PCB board and improves inspection efficiency.

[0008] Furthermore, the lifting mechanism includes a mounting plate installed on the upper surface of the inspection table, and an electric push rod is mounted on the outer surface of the mounting plate via a first bracket. The end of the telescopic end of the electric push rod is connected to the upper surface of the pressure plate.

[0009] Furthermore, two fixing blocks are installed on each of the four sides of the upper surface of the placement plate. The outer surface of the fixing blocks is connected to a tension spring, and the end of the tension spring is connected to the L-shaped block.

[0010] Furthermore, slide rods are installed on both sides of the upper surface of the pressure plate, linear bearings are slidably installed on the outer surface of the slide rods, and a second bracket is installed on the outer surface of the linear bearing, with the end of the second bracket connected to the mounting plate.

[0011] Furthermore, a rubber pad is provided on the side of the L-shaped block facing the placement groove.

[0012] Furthermore, the two sides of the wedge block along its length are within the distance between two fixed blocks on the same side.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows.

[0014] 1. This utility model utilizes the squeezing action of the wedge block and the inclined surface. When the lifting mechanism drives the pressure plate to descend, the pressure needle will first contact and squeeze the inclined surface, thereby driving the L-shaped block to extend out of the L-shaped groove and press against the side of the PCB board. By positioning the four sides of the PCB board, it can automatically position the pressure needle to a precise position before it contacts the PCB board. Therefore, the size of the placement groove can be designed to be slightly larger, which facilitates the quick removal of the PCB board and improves inspection efficiency.

[0015] 2. By setting a rubber pad, this utility model can buffer the impact force when the L-shaped block abuts against the side of the PCB board, thus avoiding damage to the PCB board. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a partial structural schematic diagram of the present invention;

[0018] Figure 3 This is a cross-sectional structural diagram of the placement plate in this utility model;

[0019] Figure 4 for Figure 3 An enlarged diagram of A in the diagram.

[0020] In the diagram: 100, inspection table; 101, needle plate; 102, needle foot; 103, spring telescopic rod; 104, placement plate; 105, placement groove; 106, L-shaped groove; 107, L-shaped block; 108, inclined surface; 109, pressure plate; 110, pressure needle; 111, wedge block; 200, lifting mechanism; 201, mounting plate; 202, first bracket; 203, electric push rod; 300, fixing block; 301, tension spring; 400, slide rod; 401, linear bearing; 402, second bracket. Detailed Implementation

[0021] 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.

[0022] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection" and "installation" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Furthermore, "connection" can be a direct connection or an indirect connection through an intermediate medium. "Fixed" means that the relative positional relationship remains unchanged after the connection. The directional terms mentioned in the embodiments of this utility model, such as "inner," "outer," "top," and "bottom," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this utility model, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0023] In this embodiment of the invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0024] Please see Figures 1-4This utility model provides a PCB board inspection device, including an inspection table 100. A needle plate 101 is mounted on the upper surface of the inspection table 100. Needle feet 102 are provided on the upper surface of the needle plate 101. Spring telescopic rods 103 are installed at the four corners of the upper surface of the needle plate 101. A placement plate 104 is installed at the ends of the four spring telescopic rods 103. A placement groove 105 is formed on the surface of the placement plate 104. L-shaped grooves 106 are formed on the four inner walls of the placement grooves 105. L-shaped blocks 107 are provided inside the L-shaped grooves 106. An inclined surface 108 is provided at the upper end of the L-shaped blocks 107. A pressure plate 109 is mounted on the upper surface of the inspection table 100 through a lifting mechanism 200. Pressure needles 110 are mounted on the lower surface of the pressure plate 109. Wedge blocks 111 that press against the inclined surface 108 are provided on the four sides of the lower surface of the pressure plate 109.

[0025] In use, the PCB board is placed in the placement slot 105. Since the size of the placement slot 105 is slightly larger than the size of the PCB board, the PCB board has enough room to move, which facilitates its placement and reduces the risk of collisions. Then, the lifting mechanism 200 drives the pressure plate 109 to descend. The pressure plate 109 drives the four wedge blocks 111 to contact and press against the four inclined surfaces 108. The pressing drives the L-shaped block 107 to move inward to the inside of the placement slot 105 and press against the side of the PCB board, thereby achieving the purpose of four-sided positioning. Then, the pressure pin 110 presses on the surface of the PCB board and drives the placement plate 104 to descend, so that the pins 102 below can contact the PCB board and conduct circuit detection. After the detection is completed, the lifting mechanism 200 drives the pressure plate 109 to rise, and the spring telescopic rod 103 pushes the placement plate 104 upward and separates the pins 102 from the PCB board. Then, the PCB board can be taken out from the placement slot 105.

[0026] Specifically, the lifting mechanism 200 includes a mounting plate 201 installed on the upper surface of the inspection table 100. An electric push rod 203 is installed on the outer surface of the mounting plate 201 through a first bracket 202. The end of the telescopic end of the electric push rod 203 is connected to the upper surface of the pressure plate 109. The electric push rod 203 is vertically installed directly above the pressure plate 109. When the electric push rod 203 is activated, its telescopic end drives the pressure plate 109 to descend, so that the wedge block 111 can be squeezed against the inclined surface 108, and the pressure needle 110 can press down on the PCB board.

[0027] Specifically, two fixing blocks 300 are installed on each of the four sides of the upper surface of the placement plate 104. A tension spring 301 is connected to the outer surface of the fixing block 300. The end of the tension spring 301 is connected to the L-shaped block 107. When the inclined surface 108 is squeezed and the L-shaped block 107 is pushed against the side of the PCB board, the tension spring 301 will be stretched. When the wedge block 111 separates from the inclined surface 108, the tension spring 301 can drive the L-shaped block 107 to retract back into the L-shaped groove 106, thereby releasing the PCB board from fixation and leaving a gap between it and the inner wall of the placement groove 105. Therefore, the PCB board can be easily and quickly removed from the placement groove 105.

[0028] Specifically, slide rods 400 are installed on both sides of the upper surface of the pressure plate 109. Linear bearings 401 are slidably installed on the outer surface of the slide rods 400. A second bracket 402 is installed on the outer surface of the linear bearings 401, and the end of the second bracket 402 is connected to the mounting plate 201. Through the setting of the slide rods 400 and the linear bearings 401, the pressure plate 109 can be provided with a limiting and guiding function to ensure that it can rise and fall smoothly and improve the pressing effect of the pressure pins 110 on the PCB board.

[0029] Specifically, a rubber pad is provided on the side of the L-shaped block 107 facing the placement groove 105. The rubber pad can buffer the impact when the L-shaped block 107 is pressed against the side of the PCB board, thus preventing damage to the PCB board.

[0030] Specifically, the two sides of the wedge block 111 along its length are within the distance between the two fixing blocks 300 on the same side. When the wedge block 111 descends and is pressed against the inclined surface 108, it can ensure that it will not come into contact with the tension spring 301.

[0031] The above is a detailed description of the present invention in conjunction with specific embodiments, and it should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, any equivalent substitutions or obvious modifications made without departing from the concept of the present invention, and which have the same performance or use, should be considered as falling within the patent protection scope defined by the submitted claims.

Claims

1. A PCB board inspection device, comprising an inspection table (100), characterized in that: The upper surface of the inspection table (100) is equipped with a needle plate (101), the upper surface of the needle plate (101) is provided with needle feet (102), and spring telescopic rods (103) are installed at the four corners of the upper surface of the needle plate (101). The ends of the four spring telescopic rods (103) are jointly equipped with a placement plate (104), and the surface of the placement plate (104) is provided with a placement groove (105). The four inner walls of the placement groove (105) are provided with L-shaped grooves (106), and L-shaped blocks (107) are provided inside the L-shaped grooves (106). The upper end of the L-shaped blocks (107) is provided with a beveled part (108). The upper surface of the inspection table (100) is equipped with a pressure plate (109) via a lifting mechanism (200), and the lower surface of the pressure plate (109) is equipped with a pressure needle (110). The four sides of the lower surface of the pressure plate (109) are provided with wedge blocks (111) that are pressed and cooperate with the inclined surface (108).

2. The PCB board inspection device according to claim 1, characterized in that: The lifting mechanism (200) includes a mounting plate (201) installed on the upper surface of the inspection table (100). An electric push rod (203) is mounted on the outer surface of the mounting plate (201) via a first bracket (202). The end of the telescopic end of the electric push rod (203) is connected to the upper surface of the pressure plate (109).

3. The PCB board inspection device according to claim 1, characterized in that: Two fixing blocks (300) are installed on each of the four sides of the upper surface of the placement plate (104). A tension spring (301) is connected to the outer surface of the fixing block (300), and the end of the tension spring (301) is connected to the L-shaped block (107).

4. The PCB board inspection device according to claim 2, characterized in that: Slide rods (400) are installed on both sides of the upper surface of the pressure plate (109). A linear bearing (401) is slidably installed on the outer surface of the slide rod (400). A second bracket (402) is installed on the outer surface of the linear bearing (401), and the end of the second bracket (402) is connected to the mounting plate (201).

5. The PCB board inspection device according to claim 1, characterized in that: A rubber pad is provided on the side of the L-shaped block (107) facing the placement groove (105).

6. The PCB board inspection device according to claim 3, characterized in that: The two sides of the wedge block (111) along its length are within the distance between the two fixed blocks (300) on the same side.

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