PCBA function automatic test equipment

Abstract

The utility model relates to PCBA function automatic test equipment belongs to test equipment technical field to solve the problem that the personnel workload is big, test efficiency is low and test cost is high, test debugging period is long when the existing PCBA test equipment adopts manual function test. The present application includes test frame, test fixture and test component, and the test component includes several function test instruments and test head, the test frame inside is equipped with the material cavity for placing test fixture and function test instrument, the test fixture is equipped with test bench and test board, the test board is driven to the test bench movable installation in test fixture through the drive part, and the test head is installed in the test board, and the PCBA to be measured is installed in the test bench, and the test head is electrically connected with the function test instrument. The PCBA function automatic test equipment of the present application can replace manual function test, realize the reduction of personnel workload, and improve test efficiency.

Description

Technical Field

[0001] This utility model relates to an automatic testing device for PCBA functions, belonging to the technical field of testing equipment. Background Technology

[0002] During the mass production of various electronic products' printed circuit boards (PCBAs), defects may be introduced due to equipment conditions and human factors. Therefore, it is necessary to add a functional testing process during production to ensure that all PCBs leaving the factory meet the design specifications and parameters.

[0003] In existing technologies, functional testing of PCBAs mostly relies on manual methods. Operators manually pick up the PCBA under test, place it on the test bench of the testing equipment, and then manually connect the test heads of various functional testing instruments to the PCBA's connectors. After completing the interface connection, testing is then performed. This process results in a large workload and low efficiency. Furthermore, when performing functional testing on batches of PCBAs with different specifications and dimensions, the varying sizes and specifications of the PCBAs necessitate the use of compatible testing equipment, increasing testing costs. Frequent equipment changes are also required when testing multiple PCBA specifications, extending the testing and debugging cycle and further reducing efficiency. Therefore, an automated PCBA functional testing device is needed to address the problems of high workload, low efficiency, high cost, and long testing and debugging cycles associated with manual functional testing using existing PCBA testing equipment. Utility Model Content

[0004] The purpose of this invention is to provide an automatic testing device for PCBA functions to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an automatic PCBA functional testing device, comprising a test frame, a test fixture, and a test assembly, wherein the test assembly includes several functional testing instruments and test heads; the test frame has an internal cavity for placing the test fixture and functional testing instruments; the test fixture has a test platform and a test board, the test board being driven by a drive component to be movably mounted on the test platform, and the test heads being mounted on the test board; the PCBA under test is mounted on the test platform, and the test heads are electrically connected to the functional testing instruments.

[0006] Specifically, the test rack includes an upper rack and a lower rack; the upper rack is a square structure with an opening on one side and a hollow interior. The upper rack is fastened to the upper side of the lower rack through the opening side cover, and its hollow interior structure forms a first cavity in which the test fixture is installed; the lower rack is a cabinet structure with a second cavity inside for placing functional test instruments.

[0007] Specifically, the front frame of the upper frame has a second opening, and part of the test fixture extends to the outside of the second opening to form an outer edge. An operating component is installed on the outer edge, which includes several operating buttons, a power switch, and a work indicator light. The operating buttons include a manual / automatic switching button and a manual operation button.

[0008] Specifically, the top closed end of the upper rack is rotatably mounted with a top cover that extends forward and is integrally formed with the front rack, which also has a touch screen. The inner top of the lower rack has a drawer that slides in, and a keyboard is mounted on the drawer. The keyboard is electrically connected to the touch screen. The rear rack of the upper rack has an openable side door. The top cover has a handle, and a nitrogen spring is installed between the inner side of the top cover and the upper rack.

[0009] Specifically, the front and rear frames of the lower rack are each equipped with an openable side door, and the side door of the front frame has a transparent door panel, while the side door of the rear frame is equipped with a cooling fan.

[0010] Specifically, a fixture mounting assembly is installed on the upper side of the lower frame, which includes several limiting guide plates, fixing components, magnetic components, and rolling components; several limiting guide plates are installed at intervals on the upper side of the lower frame to form an mounting station whose shape is adapted to the test fixture; one side of the mounting station is connected to the second opening of the upper frame to form a test fixture placement entrance; fixing components are installed on the limiting guide plates at positions corresponding to the two sides of the test fixture, and magnetic components are installed on the lower frame on both sides of the limiting guide plates away from the test fixture placement entrance; several rolling components are installed at intervals on the lower frame inside the mounting station; and a handling handle is installed on the test fixture.

[0011] Specifically, the main power switch and pneumatic triplet are installed on the outside of the lower frame, several dustproof cable boxes are installed on the upper side of the lower frame, and transfer wheels are installed at the bottom of the lower frame.

[0012] Specifically, the test fixture includes a test platform, on which a movable plate is movably mounted in the direction of the test platform's outer side, and the test bench is fixedly installed on the movable plate; a first cylinder is installed on the test platform, and the power end of the first cylinder is connected to the movable plate.

[0013] Specifically, the test platform is equipped with a protective cover with an opening on one side, and the movable plate can be moved out from the opening side of the protective cover; a top cover is rotatably installed on the top of the protective cover, and a detachable back plate is provided on the cover body away from the opening side; several matrix connectors and interface adapters are installed on the back of the test fixture.

[0014] Specifically, the driving components include a second cylinder and a guide rod; vertical guide rods are installed on the test platforms on both sides of the test bench; the test board is slidably mounted on the guide rods, the second cylinder is fixedly mounted on the test platform, and its power end is connected to the test board; test heads are installed on the test board at the corresponding positions of the PCBA connector under test.

[0015] Compared with the prior art, the beneficial effects of this utility model are: 1. The PCBA functional automatic testing equipment of this application includes a test frame, a test fixture, and test components. The test components include a test head and several functional testing instruments. The test fixture is installed in a cavity inside the test frame, and a test platform and a test board are installed inside it. The test board is movably mounted on the test fixture relative to the test platform. The test head is mounted on the test board and electrically connected to the functional testing instruments. This allows the PCBA under test to be mounted on the test platform, and the test board to move towards the test platform via a drive component, thereby causing the test head to interface with the connector of the PCBA under test, thus automatically performing functional testing. The PCBA functional automatic testing equipment of this application can replace manual functional testing, reducing workload and improving testing efficiency.

[0016] 2. Based on the foregoing, the test fixture of this application includes a test platform, on which a movable plate is movably disposed in the outward direction, and the test bench is fixedly installed on the movable plate. The test bench of this application can extend from the test fixture via the movable plate, enabling manual placement or automatic retrieval of the PCBA to be tested during testing, either manually or using a feeding device. This further reduces workload or achieves automatic material handling and subsequent automatic functional testing, thereby improving testing efficiency.

[0017] 3. Based on the foregoing, the test rack of this application includes an upper rack and a lower rack; the upper rack is a square structure with an opening on one side and a hollow interior, and is fastened to the upper side of the lower rack through an open side cover, with its hollow interior forming a first cavity in which test fixtures are installed; the lower rack is a cabinet-type structure with a second cavity inside for placing functional testing instruments. This arrangement allows the first cavity of the upper rack to be used for installing test fixtures, while the second cavity inside the lower rack is used for installing functional testing instruments, resulting in a compact structure and ample component installation space for the PCBA automatic functional testing equipment of this application.

[0018] 4. Based on the foregoing, the upper rack of this application has a top cover rotatably mounted on its top closed end frame. The top cover extends forward and is integrally formed with the front frame, and a touch screen is provided on the front frame. A drawer is slidably mounted on the top inner side of the lower rack, and a keyboard is mounted on the drawer. The keyboard is electrically connected to the touch screen. An openable side door is installed on the rear frame of the upper rack. A handle is installed on the top cover, and a nitrogen spring is installed between the inner side of the top cover and the upper rack. Simultaneously, the front and rear frames of the lower rack of this application are each equipped with an openable side door. The side door of the front frame has a transparent door panel, and the side door of the rear frame is equipped with a cooling fan, so that both the front and rear sides of the upper and lower racks have openable side doors, facilitating the installation, maintenance, and debugging of components. In addition, a second opening is provided on the front frame of the upper rack, so that the test fixture can be pulled out separately through the second opening by opening the top cover for component replacement or maintenance and debugging. This allows for quick and adaptable replacement of test fixtures when testing PCBAs of various specifications, thereby reducing the component installation and debugging cycle and improving testing efficiency.

[0019] 5. Building upon the foregoing, a portion of the test fixture of this application extends to the outside of the second opening to form an outer edge. An operating component is mounted on the outer edge, including several operating buttons, a power switch, and a work indicator light. The operating buttons include a manual / automatic switching button and a manual operation button. This ensures that during functional testing via the test fixture, the PCBA under test is in a relatively enclosed test space, reducing the impact of the external environment on the test results and improving test accuracy. The exposed operating component facilitates external testing operations without affecting the testing work within the internal first cavity. The operator can monitor the testing process via the exposed touchscreen and drawer-type keyboard, achieving synchronization between testing and monitoring, thus improving both testing efficiency and accuracy.

[0020] 6. Building upon the foregoing, this application's lower rack features a main power switch and a pneumatic triplet mounted on its outer side, several dustproof cable trays mounted on its upper side, and transfer wheels mounted on its bottom. This allows for the installation of most traditional functional testing instruments in the second internal compartment of the lower rack, designed according to standard rack specifications. Combined with the main power switch, pneumatic triplet, and dustproof cable trays mounted on the outer side of the lower rack, a single set of functional testing instruments can be used to meet the testing requirements of multiple PCBA specifications, thus improving product compatibility. Furthermore, the lower rack is equipped with casters at its bottom for easy movement of the testing equipment, facilitating transport and relocation.

[0021] 7. Building upon the foregoing, the lower rack of this application is equipped with a fixture mounting assembly, which includes several limiting guide plates, fixing components, magnetic components, and rolling components. This allows the test fixture to be pushed into a mounting station formed by the limiting guide plates, creating a shape that matches the test fixture, and then secured by the fixing components and magnetic components. By installing rolling components within the mounting station, rapid positioning and installation are achieved during test fixture installation, improving component installation speed. Furthermore, the test fixture and test rack of this application are designed separately, allowing for the sharing of functional testing instruments for multiple PCBA specifications. This enables the use of the same test rack under different testing requirements, thereby reducing testing costs.

[0022] 8. Building upon the foregoing, the test platform of this application is equipped with a protective cover with an opening on one side. A top cover is installed on the top of the protective cover on the test platform, and a back plate is installed on the side of the protective cover away from the opening. This allows for rapid component replacement and maintenance / adjustment, enabling quick replacement and adjustment of test components within the test fixture when testing multi-specification PCBAs, thereby improving product compatibility. Simultaneously, the back of the test fixture of this application is equipped with several matrix connectors and interface adapters to facilitate wiring harness connections compatible with different fixture specifications. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the PCBA functional automatic testing equipment in this embodiment; Figure 2 This is a schematic diagram (1) of the structure of the test rack of the PCBA functional automatic test equipment after the side doors on the front and rear sides are opened. Figure 3 This is a schematic diagram (2) of the structure of the test rack of the PCBA functional automatic test equipment after the side doors on the front and rear sides are opened. Figure 4 This is a schematic diagram of the upper frame of the PCBA functional automatic testing equipment in this embodiment; Figure 5 This is a schematic diagram of the structure of the upper cover of the upper frame and the side door of the rear frame of the PCBA functional automatic testing equipment in this embodiment after opening; Figure 6 This is a schematic diagram of the lower rack of the PCBA functional automatic testing equipment in this embodiment; Figure 7 This is a schematic diagram of the structure of the front and rear side doors of the lower frame of the PCBA functional automatic testing equipment in this embodiment after the side doors are opened; Figure 8 (1) is a schematic diagram of the test fixture of the PCBA functional automatic test equipment in this embodiment. Figure 9This is a schematic diagram (1) of the test fixture of the PCBA functional automatic test equipment in this embodiment.

[0024] In the diagram: 1. Test rack; 2. Test fixture; 3. Functional testing instrument; 4. Test platform; 5. Test bench; 6. Test board; 7. First cylinder; 8. Second cylinder; 9. Guide rod; 10. PCBA under test; 11. Upper rack; 12. Lower rack; 13. Operating components; 14. Top cover; 15. Touch screen; 16. Drawer; 7. Side door; 18. Top cover handle; 19. Nitrogen spring; 20. Transparent door panel; 21. Cooling fan; 22. Limiting guide plate; 23. Rotating pin; 24. Magnetic suction component; 25. Rolling bearing; 26. Handling handle; 27. Protective cover; 28. Top cover; 29. ​​Back plate; 30. Matrix connector; 31. Interface adapter; 32. Main power switch; 33. Pneumatic triplet; 34. Dustproof cable box; 35. Fuma wheel. Detailed Implementation

[0025] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0026] Please see Figures 1-9 This embodiment discloses an automatic PCBA functional testing device, including a test frame 1, a test fixture 2, and test components. The test components include several functional testing instruments 3 and test heads. The test frame has an internal cavity for placing the test fixture 2 and the functional testing instruments 3. The test fixture in this embodiment includes a test platform 4, a test bench 5, a test board 6, and test heads. A movable plate is movably disposed on the test platform in the direction of the outer side of the test platform, and the test bench is fixedly installed on the movable plate. A first cylinder 7 is installed on the test platform, and the power end of the first cylinder is connected to the movable plate. The test board is driven by a drive component to be movably installed on the test fixture towards the test bench. The drive component in this embodiment includes a second cylinder 8 and a guide rod 9. Vertical guide rods are respectively installed on the test platforms on both sides of the test bench. The test board is slidably installed on the guide rods, and the second cylinder is fixedly installed on the test platform, with its power end connected to the test board. Test heads are installed on the test board at positions corresponding to the connector of the PCBA 10 under test. The PCBA under test is installed on the test bench, and the test heads are electrically connected to the functional testing instruments.

[0027] The test rack in this embodiment includes an upper rack 11 and a lower rack 12. The upper rack is a square structure with an opening on one side and a hollow interior. The upper rack is fastened to the upper side of the lower rack through an opening side cover, and its hollow interior structure forms a first cavity in which the test fixture is installed. The lower rack is a cabinet-type structure with a second cavity inside for placing functional testing instruments. The front side of the upper rack in this embodiment has a second opening, and part of the test fixture extends to the outside of the second opening to form an outer edge. An operating component 13 is installed on the outer edge, which includes several operating buttons, a power switch, and a working indicator light. The operating buttons include a manual / automatic switching button and a manual operation button. The manual operation buttons in this embodiment include an extension button for extending the first cylinder, a retraction button for retracting the cylinder, an up button for raising the second cylinder, and a down button for lowering the cylinder. Additionally, the top closed end of the upper frame is rotatably fitted with a top cover 14, which extends forward and is integrally formed with the front frame. A touchscreen 15 is mounted on the front frame. A drawer 16 is slidably mounted on the top inner side of the lower frame, and a keyboard is mounted on the drawer. The keyboard is electrically connected to the touchscreen. An openable side door 17 is mounted on the rear frame of the upper frame. A top cover handle 18 is mounted on the top cover, and a nitrogen spring 19 is installed between the inner side of the top cover and the upper frame.

[0028] Preferably, in this embodiment, the front and rear frames of the lower frame are each equipped with an openable side door 17, and the side door of the front frame has a transparent door panel 20, while the side door of the rear frame is equipped with a cooling fan 21. To facilitate quick and accurate installation of the test fixture, a fixture installation assembly is installed on the upper side of the lower frame in this embodiment, which includes three limiting guide plates 22, knob pins 23, magnetic suction components 24, and rolling bearings 25. The three limiting guide plates are installed at intervals in a square structure on the upper side of the lower frame to form an installation station with a shape adapted to the test fixture. One side of the installation station is connected to the second opening of the upper frame to form a test fixture placement entrance. Knob pins are installed on the limiting guide plates corresponding to the two sides of the test fixture, and magnetic suction components are installed on the lower frame on both sides of the limiting guide plates away from the test fixture placement entrance. Several rolling bearings are installed at intervals on the lower frame inside the installation station. A handling handle 26 is installed on the test fixture. In addition, a main power switch 32 and a pneumatic triplet 33 are installed on the outside of the lower frame in this embodiment, two dustproof cable boxes 34 are installed on the upper side of the lower frame, and a fuma wheel 35 is installed at the bottom of the lower frame.

[0029] Furthermore, the test platform of this embodiment is equipped with a protective cover 27 with an opening on one side, and the movable plate can be moved out from the opening side of the protective cover; a top cover 28 is rotatably installed on the top of the protective cover, and a detachable back plate 29 is provided on the cover body away from the opening side of the protective cover; three matrix connectors 30 and four interface adapters 31 are installed on the back of the test fixture.

[0030] Working Principle: In this embodiment of the automatic PCBA functional testing equipment, the operator first selects the appropriate test bench, test head, and testing instruments (i.e., functional testing instruments) according to the specifications and dimensions of the PCBA to be tested. Then, the operator installs the test bench onto the test fixture, installs the test head on the test plate, and installs the functional testing instruments in the second cavity of the lower frame, followed by connecting the circuit lines and cylinder connecting pipes. Next, the operator pushes the test fixture from the second opening side of the upper frame into the first cavity using the handling handles on both sides of the test fixture. After the rear side of the test fixture is magnetically secured against the magnetic suction device, the rotating pins on both sides of the test fixture are used to fix it in place. Then, the test head is electrically connected to the functional testing instruments via the matrix connector and interface adapter on the back of the test fixture. Finally, the operator sets the equipment parameters via the touch screen and keyboard to control the operation of components such as the first and second cylinders.

[0031] During testing, the PCBA under test is placed on the test table manually or automatically by a robotic arm. After loading, the equipment is started by pressing the start button. First, the first cylinder is activated to drive the moving plate to retract, thereby pulling the test table back into the test fixture. Then, the second cylinder is activated to drive the test plate to slide along the guide rod towards the test table until the test plate presses down on the PCBA under test, thereby driving the test head to mate with the connector of the PCBA under test, thus completing the interface connection. Then, the functional test is performed automatically. After the test is completed, the above components are reset. The moving plate drives the test table to extend out from the second opening, and the PCBA that has completed the test is removed manually or by a robotic arm for subsequent automatic testing of the PCBA under test. It should be noted that during testing, the operator can choose between manual testing mode or automatic testing mode according to actual needs. Preferably, manual testing mode can be used for the first test to ensure a smooth testing process and facilitate timely shutdown and debugging if problems are found during the test. After the test is completed without errors, the automatic testing mode can be selected for automated testing to improve testing efficiency.

[0032] When testing PCBA functional automated testing equipment of this embodiment, if the specifications of the device under test (DUT) change, it is necessary to replace the compatible functional testing instruments, test heads, or even new test fixtures. When replacing components, quick replacement and adjustment can be achieved by opening the side doors on the front and rear sides of the upper and lower racks, and by opening the top cover and back panel of the test fixture. This PCBA functional automated testing equipment of this embodiment has high product compatibility, high testing efficiency, and the test rack can be used with multiple test fixtures and multiple DUT specifications, resulting in low testing costs.

[0033] The embodiments of the present invention have been described in detail above. However, the present invention is not limited to the above embodiments. For those skilled in the art, after learning the contents of the present invention, several equivalent changes and substitutions can be made without departing from the principle of the present invention. These equivalent changes and substitutions should also be considered to fall within the protection scope of the present invention.

Claims

1. An automated PCBA functional testing device, comprising a test frame, a test fixture, and test components, characterized in that: The test assembly includes several functional test instruments and test heads; the test frame has an internal cavity for placing the test fixture and functional test instruments; the test fixture has a test platform and a test board, the test board is driven by a drive component to be movably mounted on the test platform and the test head is mounted on the test board; the PCBA under test is mounted on the test platform and the test head is electrically connected to the functional test instruments.

2. The PCBA functional automatic testing equipment according to claim 1, characterized in that: The test frame includes an upper frame and a lower frame; the upper frame is a square structure with an opening on one side and a hollow interior, and the upper frame is fastened to the upper side of the lower frame through an opening side cover, and its hollow interior structure forms a first cavity, in which the test fixture is installed; the lower frame is a cabinet structure with a second cavity inside for placing functional test instruments.

3. The PCBA functional automatic testing equipment according to claim 2, characterized in that: The front frame of the upper frame is provided with a second opening, and part of the body of the test fixture extends to the outside of the second opening to form an outer edge; an operating component is installed on the outer edge, the operating component includes several operating buttons, a power switch and a working indicator light; the several operating buttons include a manual / automatic switching button and a manual operation button.

4. The PCBA functional automatic testing equipment according to claim 2, characterized in that: The top closed end of the upper frame is rotatably fitted with a top cover, which extends forward and is integrally formed with the front frame. A touch screen is provided on the front frame. A drawer is slidably installed on the top inner side of the lower frame, and a keyboard is installed on the drawer. The keyboard is electrically connected to the touch screen. An openable side door is installed on the rear frame of the upper frame. A handle is installed on the top cover, and a nitrogen spring is installed between the inner side of the top cover and the upper frame.

5. The PCBA functional automatic testing equipment according to claim 2, characterized in that: The front and rear frames of the lower frame are each equipped with an openable side door, and the side door of the front frame is equipped with a transparent door panel, while the side door of the rear frame is equipped with a cooling fan.

6. The PCBA functional automatic testing equipment according to claim 3, characterized in that: A fixture mounting assembly is installed on the upper side of the lower frame, comprising several limiting guide plates, fixing components, magnetic components, and rolling components. Several limiting guide plates are spaced apart on the upper side of the lower frame to form an mounting station whose shape matches the test fixture. One side of the mounting station is connected to the second opening of the upper frame to form a test fixture placement inlet. Fixing components are installed on the limiting guide plates corresponding to the two sides of the test fixture, and magnetic components are installed on the lower frame on both sides of the limiting guide plates away from the test fixture placement inlet. Several rolling components are spaced apart on the lower frame inside the mounting station. A handling handle is installed on the test fixture.

7. The PCBA functional automatic testing equipment according to claim 2, characterized in that: The outer side of the lower frame is equipped with a main power switch and a pneumatic triplet. Several dustproof cable boxes are installed on the upper side of the lower frame, and transfer wheels are installed at the bottom of the lower frame.

8. The PCBA functional automatic testing equipment according to claim 1, characterized in that: The test fixture includes a test platform, on which a movable plate is movably disposed in the direction of the test platform outward, and the test table is fixedly installed on the movable plate; a first cylinder is installed on the test platform, and the power end of the first cylinder is connected to the movable plate.

9. The PCBA functional automatic testing equipment according to claim 8, characterized in that: The test platform is equipped with a protective cover with an opening on one side, and the movable plate can be moved out from the opening side of the protective cover; a top cover is rotatably installed on the top of the protective cover, and a detachable back plate is provided on the cover body away from the opening side; several matrix connectors and interface adapters are installed on the back of the test fixture.

10. The PCBA functional automatic testing equipment according to claim 8, characterized in that: The driving component includes a second cylinder and a guide rod; vertical guide rods are respectively installed on the test platforms on both sides of the test bench; the test board is slidably installed on the guide rods, the second cylinder is fixedly installed on the test platform, and its power end is connected to the test board; the test head is installed on the test board at the corresponding position of the PCBA connector under test.

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