Test fixture for circuit board intelligent test work station

Abstract

The utility model provides a test fixture for a circuit board intelligent test workstation, which comprises a fixture base, a PCB (printed circuit board) cavity tool and an elbow frame vertical plate are detachably mounted on the upper end face of the middle of the fixture base, the PCB cavity tool is horizontally arranged, the elbow frame vertical plate is vertically arranged, and the PCB cavity tool is not in contact with the elbow frame vertical plate; the PCB cavity tool is located in front of the elbow frame vertical plate. An elbow clamp installation block is fixedly installed on the front end face of the elbow frame vertical plate, the lower end of the elbow clamp installation block is connected with the upper end of a jig elbow clamp in a matched mode, the lower end of the jig elbow clamp is perpendicularly connected with an upper needle plate, and the upper needle plate is arranged above the PCB cavity tool in parallel. A guide hole is formed in the upper needle plate, a guide shaft is vertically installed in the guide hole, the bottom end of the guide shaft is vertically and fixedly connected with the upper end face of the jig base, the top end of the guide shaft is connected with a guide shaft fixing block, and the guide shaft fixing block is fixedly connected with the elbow frame vertical plate. According to the test requirements of different circuit boards, different PCB cavity tools are rapidly replaced, so that the production inspection efficiency is improved by 60%, and the production cycle is remarkably shortened.

Description

Technical Field

[0001] This utility model belongs to the field of intelligent manufacturing technology and relates to circuit board testing equipment, specifically a test fixture for a circuit board intelligent testing workstation. Background Technology

[0002] In the modern electronics manufacturing industry, with the diversification of product types and the widespread adoption of small-batch, multi-variety production models, traditional circuit board testing methods face problems of insufficient flexibility and low efficiency. Existing circuit board testing workstations are typically only designed for specific circuit board models and cannot adapt to rapidly changing market demands. Therefore, there is an urgent need to develop a test fixture that allows workstations to test different circuit boards by creating different test fixtures, which is of great significance for expanding the functionality of workstations. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, this utility model proposes a test fixture for a circuit board intelligent test workstation to solve the technical problem of low efficiency of the test device in the existing technology.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A test fixture for a circuit board intelligent test workstation includes a fixture base, characterized in that a PCB cavity fixture and an elbow support vertical plate are detachably mounted on the upper middle surface of the fixture base, the PCB cavity fixture is arranged horizontally, the elbow support vertical plate is arranged vertically, and the PCB cavity fixture does not contact the elbow support vertical plate; the PCB cavity fixture is located in front of the elbow support vertical plate.

[0006] An elbow clamp mounting block is fixedly installed on the front end face of the elbow support vertical plate. The lower end of the elbow clamp mounting block is connected to the upper end of the fixture elbow clamp. The lower end of the fixture elbow clamp is vertically connected to the upper needle plate. The upper needle plate is arranged parallel above the PCB cavity tooling.

[0007] The upper needle plate is provided with a guide hole, and a guide shaft is vertically installed in the guide hole. The bottom end of the guide shaft is vertically and fixedly connected to the upper end face of the fixture base, and the top end of the guide shaft is connected to the guide shaft fixing block. The guide shaft fixing block is fixedly connected to the elbow frame vertical plate.

[0008] This utility model also has the following technical features:

[0009] The upper surface of the fixture base is provided with an indicator light, the front surface of the fixture base is provided with a counter, the left and right surfaces of the fixture base are respectively provided with a latch and a handle, and the lower surface of the fixture base is provided with nylon feet.

[0010] The upper end face of the upper needle plate is the upper needle bed, and the lower end face of the upper needle plate is the lower needle bed.

[0011] The dimensions of the test fixture for the intelligent circuit board test workstation are no greater than 400mm*300mm*200mm (length*width*height).

[0012] The upper needle plate is made of acrylic material; the PCB cavity tooling is made of glass fiber material.

[0013] Compared with the prior art, the present invention has the following beneficial technical effects:

[0014] (I) The present invention proposes a method that improves production inspection efficiency by 60% and significantly shortens the production cycle by quickly changing different PCB cavity tooling according to the testing requirements of different circuit boards.

[0015] (II) This utility model proposes a test fixture for a circuit board intelligent test workstation, which can quickly adapt to the testing needs of various circuit boards, meet the flexibility requirements of modern intelligent manufacturing, and adapt to the production mode of small batches and multiple varieties. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the test fixture used in a smart circuit board test workstation.

[0017] Figure 2 This is a front sectional view of the test fixture used in a smart circuit board test workstation.

[0018] Figure 3 This is a photograph of the actual test circuit board.

[0019] The meanings of the labels in the figure are as follows: 1- Fixture base, 2-PCB cavity tooling, 3- Elbow support vertical plate, 4- Elbow clamp mounting block, 5- Fixture elbow clamp, 6- Upper needle plate, 7- Guide hole, 8- Guide shaft, 9- Guide shaft fixing block.

[0020] 101-Indicator light, 102-Counter, 103-Lock, 104-Handle, 105-Nylon feet.

[0021] The specific content of this utility model will be further explained in detail below with reference to the embodiments. Detailed Implementation

[0022] It should be noted that, unless otherwise specified, all equipment and components in this utility model are based on mechanical equipment and components known in the prior art. For example, the intelligent circuit board testing workstation adopts a commonly used intelligent circuit board testing workstation known in the art.

[0023] In this embodiment, the PCB (Printed Circuit Board) is a printed circuit board known in the art; in this embodiment, the CAN (Controller Area Network) is a controller area network known in the art.

[0024] Following the above technical solution, the following are specific embodiments of this utility model. It should be noted that this utility model is not limited to the following specific embodiments, and all equivalent modifications made based on the technical solution of this application fall within the protection scope of this utility model.

[0025] Example:

[0026] This embodiment provides a test fixture for a circuit board intelligent test workstation, including a fixture base 1, such as... Figure 1 and Figure 2 As shown, a PCB cavity fixture 2 and an elbow support vertical plate 3 are detachably mounted on the upper middle part of the fixture base 1. The PCB cavity fixture 2 is arranged horizontally, and the elbow support vertical plate 3 is arranged vertically. The PCB cavity fixture 2 and the elbow support vertical plate 3 do not contact each other, and the PCB cavity fixture 2 is located in front of the elbow support vertical plate 3.

[0027] like Figure 1 and Figure 2 As shown, an elbow clamp mounting block 4 is fixedly installed on the front end face of the elbow support vertical plate 3. The lower end of the elbow clamp mounting block 4 is connected to the upper end of the fixture elbow clamp. The lower end of the fixture elbow clamp 5 is vertically connected to the upper needle plate 6. The upper needle plate 6 is arranged parallel above the PCB cavity fixture 2.

[0028] like Figure 1 and Figure 2 As shown, the upper needle plate 6 has a guide hole 7, and a guide shaft 8 is vertically installed in the guide hole 7. The bottom end of the guide shaft 8 is vertically and fixedly connected to the upper end face of the fixture base 1, and the top end of the guide shaft 8 is connected to the guide shaft fixing block 9. The guide shaft fixing block 9 is fixedly connected to the elbow frame vertical plate 3.

[0029] like Figure 1 and Figure 2 As shown, an indicator light 101 is provided on the upper end face of the fixture base 1, a counter 102 is provided on the front end face of the fixture base 1, a latch 103 and a lift 104 are provided independently on the left and right end faces of the fixture base 1 respectively, and a nylon foot 105 is provided on the lower end face of the fixture base 1.

[0030] Specifically in this embodiment, the signals inside the test fixture of the intelligent circuit board test workstation are connected to the interface of the test fixture of the intelligent circuit board test workstation through internal connection signal lines. The interface of the test fixture of the intelligent circuit board test workstation is connected to the required test equipment to perform electrical performance testing of the circuit board.

[0031] In this embodiment, wiring and placement are carried out on the fixture base 1 according to predetermined wiring requirements. This not only ensures the safety of the test but also improves the overall aesthetics and structural stability of the equipment. Anti-static design is an indispensable part of modern electronic testing equipment, which can effectively protect sensitive components and avoid test errors caused by electrostatic interference.

[0032] Specifically, in this embodiment, the main function of the nylon feet 105 is to maintain the stability of the testing equipment and prevent any movement during the testing process. Nylon material not only has good wear resistance and compressive strength, but also effectively reduces the impact of vibration on the test results. By properly arranging the nylon feet, the stability of the entire testing workstation during operation can be ensured, thereby improving the repeatability and reliability of the test.

[0033] Specifically, in this embodiment, the upper needle plate 6 is a crucial component controlling the connection between the circuit board and the testing equipment. Controlled by a relay, the upper needle plate 6 can clamp and fix the PCB cavity fixture 2 during testing, ensuring the circuit board does not shift during the test. This design not only improves testing safety but also ensures accurate transmission of test signals. Furthermore, the flexible design of the upper needle plate 6 allows it to adapt to the contact requirements of different circuit boards, further enhancing the versatility of the testing equipment. The upper surface of the upper needle plate 6 is the upper needle bed, and the lower surface is the lower needle bed. The circuit board is placed in the lower needle bed position. The upper needle bed presses down, bringing the needle bed into contact with the circuit board. After power is applied, the test signal enters the testing fixture through the probes on the lower needle bed, ensuring accurate transmission of the test signal. The needle bed is adjusted according to the layout of the circuit board to accommodate different connection points.

[0034] Specifically, in this embodiment, to achieve PCBA testing of the circuit board, the dimensions of the test fixture used in the intelligent test workstation for the circuit board are no greater than 400mm*300mm*200mm (length*width*height).

[0035] Specifically, in this embodiment, the test fixture used in the intelligent circuit board test workstation adopts a standardized interface, which can complete the replacement of the test fixture in a few minutes without additional tools, greatly reducing equipment downtime and improving the operating efficiency of the production line.

[0036] Specifically, in this embodiment, the fixture base 1 of the test fixture used in the intelligent test workstation for circuit boards is made of antistatic black bakelite material. Antistatic black bakelite has good insulation and antistatic properties, which can effectively prevent static electricity from damaging the circuit board; the upper needle plate 6 is made of acrylic material; and the PCB cavity tooling 2 is made of glass fiber material.

[0037] Specifically, in this embodiment, the PCB cavity fixture 2 adopts a PCB cavity fixture known in the art. The PCB cavity fixture 2 is mainly used to accurately position the circuit board to be tested. The design of this fixture takes into account the size and shape of the circuit board to ensure that it can adapt to the placement requirements of the circuit board; its cavity structure can effectively fix the circuit board and avoid displacement during the test, thereby improving the accuracy and reliability of the test.

[0038] Specifically, in this embodiment, the test fixture used for the intelligent test workstation of the circuit board has multiple test functions such as network port communication, CAN communication and 485 communication.

[0039] Specifically, in this embodiment, the test fixture for the intelligent circuit board test workstation adopts a modular design, including hardware and software components. The hardware component includes standardized hardware wiring and mechanical structures. In the modular design, the hardware wiring uses standardized interfaces, enabling different types of test fixtures for the intelligent circuit board test workstation to be quickly connected to the test workstation. This not only simplifies the wiring process but also reduces test errors caused by improper wiring.

[0040] In use, the PCB circuit board to be tested is installed in the PCB cavity fixture 2, and then tested through a smart circuit board testing workstation. Different PCB circuit boards to be tested correspond to different matching PCB cavity fixtures 2. The quick replacement of the PCB cavity fixture 2 shortens the production cycle and improves testing efficiency.

[0041] Preferably, the PCB circuit board to be tested is as follows: Figure 3 As shown, the circuit board includes ① substation board number; ② communication mode selection; ③ power supply position; ④ six analog current inputs (4-20mA); ⑤ 485 serial port position; ⑥ CAN serial port position; ⑦ network port position; ⑧ LCD screen interface; performance tests include network communication test, CAN communication test, 485 communication test and intrinsic safety test as required.

Claims

1. A test fixture for a circuit board intelligent test workstation, comprising a fixture base (1), characterized in that, The upper middle surface of the fixture base (1) is detachably equipped with a PCB cavity fixture (2) and an elbow support vertical plate (3). The PCB cavity fixture (2) is arranged horizontally, and the elbow support vertical plate (3) is arranged vertically. The PCB cavity fixture (2) and the elbow support vertical plate (3) do not contact each other. The PCB cavity fixture (2) is located in front of the elbow support vertical plate (3). An elbow clamp mounting block (4) is fixedly installed on the front end face of the elbow support vertical plate (3). The lower end of the elbow clamp mounting block (4) is connected to the upper end of the fixture elbow clamp (5). The lower end of the fixture elbow clamp (5) is vertically connected to the upper needle plate (6). The upper needle plate (6) is arranged parallel above the PCB cavity fixture (2). The upper needle plate (6) is provided with a guide hole (7), and a guide shaft (8) is vertically installed in the guide hole (7). The bottom end of the guide shaft (8) is vertically and fixedly connected to the upper end face of the fixture base (1). The top end of the guide shaft (8) is connected to the guide shaft fixing block (9), and the guide shaft fixing block (9) is fixedly connected to the elbow frame vertical plate (3).

2. The test fixture for a circuit board intelligent test workstation as described in claim 1, characterized in that, The upper end face of the fixture base (1) is provided with an indicator light (101), the front end face of the fixture base (1) is provided with a counter (102), the left and right end faces of the fixture base (1) are respectively provided with a latch (103) and a handle (104), and the lower end face of the fixture base (1) is provided with a nylon foot (105).

3. The test fixture for a circuit board intelligent test workstation as described in claim 1, characterized in that, The upper end face of the upper needle plate (6) is the upper needle bed, and the lower end face of the upper needle plate (6) is the lower needle bed.

4. The test fixture for a circuit board intelligent test workstation as described in claim 1, characterized in that, The dimensions of the test fixture for the intelligent circuit board test workstation are no greater than 400mm*300mm*200mm (length*width*height).

5. The test fixture for a circuit board intelligent test workstation as described in claim 1, characterized in that, The upper needle plate (6) is made of acrylic material; the PCB cavity tooling (2) is made of glass fiber material.

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