PCB testing platform

Abstract

This utility model provides a PCB circuit board testing platform, relating to the technical field of circuit board testing platforms. It includes an operating table with a clamping assembly on its top for fixing the PCB circuit board during testing to prevent displacement due to external forces. A height adjustment assembly is located on the top of the operating table and behind the clamping assembly. The clamping assembly on the top of the operating table enables bidirectional adjustment and clamping of the circuit board, preventing displacement due to external forces during testing. This solves the problem in the prior art where the circuit board was not fixed or was not securely fixed and was prone to displacement. The height adjustment assembly on the top of the operating table and behind the clamping assembly allows for vertical displacement adjustment of the testing assembly, meeting the testing requirements of circuit boards of different thicknesses. This changes the situation in the prior art where height adjustment relied solely on manual lifting of a handle, which was difficult to control precisely and had poor adaptability.

Description

Technical Field

[0001] This utility model relates to the field of circuit board test bench technology, and in particular to a PCB circuit board test bench. Background Technology

[0002] PCB manufacturing involves multiple precision processes such as drilling and electroplating. A copper foil thickness deviation of 0.01mm or a pad offset of 0.05mm can cause problems such as open circuits and short circuits. For example, when laminating multilayer boards, an inner layer circuit alignment accuracy of less than 0.1mm can lead to interlayer conduction failure. Copper foil residue exceeding the standard by 5% after etching can cause signal delay. These microscopic defects cannot be identified by the naked eye and require quantitative detection using professional modules such as continuity testing and impedance analysis on a test bench.

[0003] A search revealed a Chinese patent, CN208621647U, for a circuit board test bench structure. The patent includes a test bench body, with a power switch embedded on one side of the front end. A PCB board support is located at the top of the test bench body, and a rear panel frame is located at the rear end. A mounting block is fixed to the center of the top of the rear panel frame via bolts. A lifting mechanism is welded to the outside of the mounting block. Guide posts are fixed to the inner sides of both side panels of the rear panel frame, and a testing mechanism is sleeved on the guide posts. This invention utilizes a novel testing mechanism and testing pins, which shortens the testing cycle, improves testing efficiency, and reduces spare parts wear costs during the testing process.

[0004] The aforementioned patented PCB testing station relies solely on manual operation of a lifting handle to raise and lower the testing mechanism. This manual operation makes it difficult to precisely control the contact force between the testing top and the PCB. Furthermore, the PCB is not secured on the PCB support platform. During testing (the workflow in the comparative document is: pushing down the lifting handle moves the first steel block downwards, which in turn moves the vertical connecting rod mounted on the second fixed pivot downwards. The vertical connecting rod and the auxiliary fixing rod move the upper and lower tempered glass downwards, and the pressure column at the bottom of the lower tempered glass presses against the four corners of the PCB, thus securing the PCB during testing), instability can easily occur. This can lead to displacement of the PCB due to external forces during testing, affecting the accuracy of the test results. In addition, the installation method of its testing components is not convenient, and the connection structure is relatively complex. When it is necessary to replace the testing components, the operation is cumbersome and time-consuming, which is not conducive to improving testing efficiency. Therefore, we propose a PCB testing station. Utility Model Content

[0005] The purpose of this invention is to provide a PCB circuit board test bench to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A PCB circuit board testing station includes an operating table. The operating table has a clamping assembly on its top for fixing the PCB circuit board during testing to prevent displacement due to external forces. A height adjustment assembly is located on the top of the operating table and on the back of the clamping assembly. The front of the height adjustment assembly is detachably connected to a testing assembly via a connecting assembly.

[0008] As a preferred embodiment of this utility model, the support legs evenly distributed around the bottom of the operating table form a stable support structure with the base. The support feet at the bottom of the base are designed with anti-slip texture to enhance the stability of the table surface and prevent the equipment from shaking during the test, thus affecting the detection accuracy.

[0009] As a preferred embodiment of this utility model, the clamping assembly includes a placement base installed on the top of the operating table, with fixing plates fixedly connected to both sides of the top of the placement base, and clamping plates provided above the placement base and inside the fixing plates, with adjusting threaded rods threadedly connected to both sides of the fixing plates.

[0010] As a preferred embodiment of this utility model, the outer walls of the clamping plates on both sides are provided with movable seats, and movable blocks are movably connected inside the movable seats. One end of the adjusting threaded rod is fixedly connected to the movable block. The top of the placement base is provided with two sliding grooves, and the bottom front and back of the clamping plates are provided with sliders that are slidably connected to the sliding grooves.

[0011] As a preferred embodiment of this utility model, the height adjustment component includes a support frame, with straight guide tubes fixedly connected to both sides between the top and bottom partitions of the support frame. A movable block is provided inside the support frame and is slidably connected to the straight guide tubes. A hydraulic cylinder is provided on the top partition of the support frame, and its output end passes through the top partition of the support frame and is fixedly connected to the movable block.

[0012] As a preferred embodiment of this utility model, the connecting assembly includes a first connecting rod fixedly connected to the center of the front of the movable block, and second connecting rods fixedly connected to both sides of the front of the movable block and the first connecting rod. The outer surface of the first connecting rod is provided with a plurality of threaded holes.

[0013] As a preferred embodiment of this utility model, the test assembly includes a mounting base, the front of which has a through hole adapted to the first connecting rod and the second connecting rod, the top of which is threaded with a fixing bolt adapted to the threaded hole, and the bottom of which is fixedly connected to a test base, and the bottom of which is provided with a test pin for testing the circuit board.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. In this utility model, the clamping component set on the top of the operating table enables bidirectional adjustment and clamping fixation of the circuit board, preventing displacement due to external force during testing. This solves the problem of circuit board placement without fixation or with weak fixation that easily leads to displacement in the prior art. Furthermore, the height adjustment component set on the top of the operating table and located on the back of the clamping component enables vertical displacement adjustment of the test component, meeting the testing requirements of circuit boards of different thicknesses. This changes the situation in the prior art where height adjustment relies solely on manual lifting of the handle, which is difficult to control precisely and has poor adaptability.

[0016] 2. In this utility model, the test component and the connecting component are detachably connected by the connecting component set on the front of the height adjustment component, which facilitates the installation and replacement of the test component and overcomes the shortcomings of the inconvenient installation method, complex connection structure and cumbersome replacement operation of the test component in the prior art. Attached Figure Description

[0017] Figure 1 A schematic diagram of the overall structure of a PCB circuit board test bench provided by this utility model;

[0018] Figure 2 A partial overall structural diagram of a PCB circuit board test bench provided by this utility model;

[0019] Figure 3 A schematic diagram of the overall structure of the clamping assembly of a PCB circuit board test bench provided by this utility model;

[0020] Figure 4 A cross-sectional structural diagram of the clamping assembly of a PCB circuit board test bench provided by this utility model.

[0021] Legend: 1. Operating table; 101. Support leg; 102. Base; 1021. Support foot; 2. Clamping assembly; 201. Placement base; 202. Fixing plate; 203. Clamping plate; 2031. Movable seat; 2032. Movable block; 204. Adjusting threaded rod; 205. Slide groove; 206. Slider; 3. Height adjustment assembly; 301. Support frame; 302. Linear guide tube; 303. Moving block; 304. Hydraulic cylinder; 4. Connecting assembly; 401. First connecting rod; 4011. Threaded hole; 402. Second connecting rod; 5. Testing assembly; 501. Mounting base; 502. Fixing bolt; 503. Testing base; 504. Testing pin. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0023] To facilitate understanding of this utility model, a more comprehensive description of this utility model will be provided below with reference to relevant embodiments, and several embodiments of this utility model will be given. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of this utility model more thorough and complete.

[0024] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0026] Example

[0027] like Figure 1-4 As shown, this utility model provides a technical solution: a PCB circuit board testing platform, including an operating table 1. The top of the operating table 1 is provided with a clamping component 2, which fixes the PCB circuit board through a bidirectional adjustable clamping structure to prevent displacement due to external force during testing. A height adjustment component 3 is provided on the top of the operating table 1 and on the back of the clamping component 2, which realizes the vertical displacement adjustment of the testing component 5 through hydraulic drive to meet the testing requirements of circuit boards of different thicknesses. The front of the height adjustment component 3 is detachably connected to the testing component 5 through a connecting component 4. The testing pin 504 at the bottom of the testing component 5 can accurately abut against the solder joints of the circuit board to complete the electrical test. Through the coordinated use of the above components, the position of the circuit board is ensured to be stable during testing, and it can adapt to the testing of circuit boards of different thicknesses, facilitating the installation and replacement of the testing component 5 and completing the electrical test.

[0028] The support legs 101 evenly distributed around the bottom of the operating table 1 form a stable support structure with the base 102. The support feet 1021 at the bottom of the base 102 are designed with anti-slip texture to enhance the stability of the table surface and prevent the equipment from shaking during the test, which would affect the detection accuracy. The support legs 101 and the base 102 form a support structure, and the anti-slip texture of the support feet 1021 increases the friction, keeping the operating table 1 stable and preventing the equipment from shaking and affecting the detection accuracy.

[0029] The clamping assembly 2 includes a placement base 201 mounted on the top of the operating table 1. Fixing plates 202 are fixedly connected to both sides of the top of the placement base 201. Clamping plates 203 are provided above the placement base 201 and inside the fixing plates 202. Adjustable threaded rods 204 are threadedly connected to both sides of the fixing plates 202. The placement base 201 provides a platform for placing the circuit board. The fixing plates 202 support the adjusting threaded rods 204. The clamping plates 203 are used to clamp the circuit board. The adjusting threaded rods 204 drive the clamping plates 203 to move, thereby facilitating the placement of the circuit board. The clamping plates 203 can clamp and fix the circuit board by adjusting the threaded rods 204.

[0030] Both sides of the clamping plate 203 have a movable seat 2031 on their outer side wall. The movable seat 2031 is movably connected to a movable block 2032. One end of the adjusting threaded rod 204 is fixedly connected to the movable block 2032. The top of the placement base 201 has two sliding grooves 205. The bottom front and back of the clamping plate 203 are provided with sliders 206 and are slidably connected to the sliding grooves 205. The movable seat 2031 and the movable block 2032 form a movable connection structure, so that the adjusting threaded rod 204 can drive the clamping plate 203 to move. The sliding grooves 205 and the sliders 206 cooperate to guide the movement direction of the clamping plate 203, ensuring that the clamping plate 203 moves smoothly and accurately, and achieving stable clamping of the circuit board.

[0031] The height adjustment component 3 includes a support frame 301. Straight guide tubes 302 are fixedly connected to both sides between the top and bottom partitions of the support frame 301. A movable block 303 is provided inside the support frame 301 and is slidably connected to the straight guide tube 302. A hydraulic cylinder 304 is provided on the top partition of the support frame 301, and its output end passes through the top partition of the support frame 301 and is fixedly connected to the movable block 303. The support frame 301 supports the straight guide tube 302 and the hydraulic cylinder 304. The straight guide tube 302 provides a sliding guide for the movable block 303. The hydraulic cylinder 304 drives the movable block 303 to move up and down, thereby realizing the stable vertical movement of the movable block 303, thereby driving the test component 5 to adjust its height.

[0032] The connecting component 4 includes a first connecting rod 401 fixedly connected to the center of the front of the movable block 303. A second connecting rod 402 is fixedly connected to both sides of the front of the movable block 303 and located on both sides of the first connecting rod 401. The outer surface of the first connecting rod 401 has a plurality of threaded holes 4011. The first connecting rod 401 and the second connecting rod 402 are used to connect the test component 5. The threaded holes 4011 are used to install the fixing bolts 502. The connecting component 4 provides a connection support point for the test component 5. The test component 5 can be fixedly installed through the threaded holes 4011.

[0033] The test assembly 5 includes a mounting base 501. The mounting base 501 has a through hole on its front side that is adapted to the first connecting rod 401 and the second connecting rod 402. A fixing bolt 502 adapted to a threaded hole 4011 is threadedly connected to the top of the mounting base 501. A test base 503 is fixedly connected to the bottom of the mounting base 501. A test pin 504 for testing the circuit board is provided at the bottom of the test base 503. The test pin 504 adopts a spring-loaded pin structure, which provides elastic cushioning when contacting the circuit board, avoiding damage to the solder pads due to hard contact. The mounting base 501 cooperates with the connecting rod through the through hole and is fixed by the fixing bolt 502. The test base 503 supports the test pin 504, which tests the circuit board. The stable connection between the test assembly 5 and the connecting assembly 4 enables the test pin 504 to accurately perform electrical tests on the circuit board.

[0034] The working process of this utility model is as follows: When using a PCB circuit board test bench, the PCB circuit board to be tested is first placed on the placement base 201. The adjusting threaded rods 204 on both sides are rotated. Since the adjusting threaded rods 204 are threadedly connected to the fixed plate 202 and one end of them is fixedly connected to the movable block 2032, and the movable block 2032 is movably connected in the movable seat 2031, the rotation of the adjusting threaded rods 204 will drive the movable block 2032 to move. The movement of the movable block 2032 will then push the clamping plate 203 to slide along the slide groove 205. The slide groove 205 cooperates with the slider 206 at the bottom of the clamping plate 203 to guide the movement direction of the clamping plate 203, so that the clamping plates 203 on both sides gradually move closer to the circuit board until the circuit board is stably clamped on the placement base 201, preventing displacement due to external force during testing.

[0035] Based on the thickness of the circuit board to be tested, the hydraulic cylinder 304 is activated. The output end of the hydraulic cylinder 304 is fixedly connected to the moving block 303. The linear guide tube 302 in the support frame 301 provides a sliding guide for the moving block 303. The hydraulic cylinder 304 drives the moving block 303 to move vertically up and down on the linear guide tube 302, thereby driving the test component 5 connected to the moving block 303 to adjust its height, so that the test pin 504 at the bottom of the test component 5 can test the circuit board.

[0036] The mounting base 501 of the test assembly 5 has through holes that are compatible with the first connecting rod 401 and the second connecting rod 402. Align the through holes of the mounting base 501 with the first connecting rod 401 and the second connecting rod 402 on the front of the moving block 303, so that the connecting rods pass through the through holes. Then, use the fixing bolts 502 that are compatible with the threaded holes 4011 on the outer surface of the first connecting rod 401 to securely connect the mounting base 501 to the connecting assembly 4, so as to ensure that the test assembly 5 is installed firmly and facilitate the test pin 504 to accurately abut against the circuit board solder joint.

[0037] Once the height of test component 5 is adjusted to the correct position and it is securely installed, the bottom of test pin 504 precisely contacts the solder joint of the circuit board. Power is then supplied to the test equipment, which performs electrical tests on the circuit board. Test pin 504 transmits the electrical signals from the circuit board to the test equipment, thus completing the electrical testing of the circuit board.

[0038] 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 PCB line board test bench comprising an operating table (1), characterized in that: The operating table (1) has a clamping component (2) on its top, which is used to fix the PCB circuit board during testing to prevent displacement due to external force during testing; the operating table (1) has a height adjustment component (3) on its top and behind the clamping component (2), and the front of the height adjustment component (3) is detachably connected to the test component (5) via a connecting component (4).

2. The PCB test board of claim 1, wherein: The support legs (101) evenly distributed around the bottom of the operating table (1) and the base (102) form a stable support structure. The support feet (1021) at the bottom of the base (102) are designed with anti-slip texture to enhance the stability of the table surface and prevent the equipment from shaking during the test, which would affect the detection accuracy.

3. The PCB test board of claim 1, wherein: The clamping assembly (2) includes a placement base (201) installed on the top of the operating table (1). Fixing plates (202) are fixedly connected to both sides of the top of the placement base (201). A clamping plate (203) is provided above the placement base (201) and inside the fixing plate (202). Adjusting threaded rods (204) are threadedly connected to both sides of the fixing plate (202).

4. The PCB test board of claim 3, wherein: The outer walls of the clamping plates (203) on both sides are provided with movable seats (2031), and movable blocks (2032) are movably connected inside the movable seats (2031). One end of the adjusting threaded rod (204) is fixedly connected to the movable block (2032). The top of the placement base (201) is provided with two sliding grooves (205). The bottom front and back of the clamping plates (203) are provided with sliders (206) and are slidably connected to the sliding grooves (205).

5. The PCB test board of claim 1, wherein: The height adjustment component (3) includes a support frame (301). A straight guide tube (302) is fixedly connected to both sides between the top and bottom partitions of the support frame (301). A moving block (303) is provided inside the support frame (301) and is slidably connected to the straight guide tube (302). A hydraulic cylinder (304) is provided on the top partition of the support frame (301), and its output end passes through the top partition of the support frame (301) and is fixedly connected to the moving block (303).

6. The PCB test board station of claim 1, wherein: The connecting component (4) includes a first connecting rod (401) fixedly connected to the center of the front of the movable block (303), and a second connecting rod (402) fixedly connected to both sides of the front of the movable block (303) and the first connecting rod (401). The outer surface of the first connecting rod (401) is provided with a plurality of threaded holes (4011).

7. The PCB test board station of claim 6, wherein: The test assembly (5) includes a mounting base (501), the front of which has a through hole adapted to the first connecting rod (401) and the second connecting rod (402), the top of which is threaded with a fixing bolt (502) adapted to the threaded hole (4011), and the bottom of which is fixed with a test base (503), the bottom of which is provided with a test pin (504) for testing the circuit board.

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