fct function test cabinet

Abstract

The utility model relates to FCT function test cabinet belongs to test equipment technical field to solve the problem that the existing test device carries out PCBA function test, and the test device occupies the space is big, and the test cost is high, and the product compatibility is poor and the test efficiency is low. The present application includes test frame and test fixture, and the inside of test frame is equipped with a plurality of material cavity, is used for placing test fixture and function test instrument, test fixture is detachably installed in material cavity, and at least part test fixture is exposed to the outside of material cavity to form the exposed end, and the exposed end is installed with operation subassembly, and the test board is installed in test fixture. The FCT function test cabinet of the present application has high product compatibility, and the test frame can be compatible with multiple test fixtures and multiple specifications of test pieces, and the test cost is low, and the test efficiency is high.

Description

Technical Field

[0001] This utility model relates to an FCT functional test cabinet, belonging to the technical field of test equipment. Background Technology

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

[0003] Existing testing equipment for PCBA functional testing employs an external, fixed component configuration, including a test rack, test fixtures, and testing equipment. The testing equipment comprises several functional testing instruments, with the test fixtures and human-machine interface (HMI) mounted on the test rack, and the functional testing instruments placed around it. The test fixture houses a test platform and test board; the device under test (DUT) is mounted on the test platform, and the test board is used to mount test heads. The test heads are electrically connected to the functional testing instruments, and functional testing is performed on the DUT through these test heads. This type of testing equipment results in a large footprint due to the dispersed arrangement of test components within the test rack. Furthermore, the external component configuration of existing testing equipment makes the test fixtures susceptible to damage from dust and impurities in the external environment, affecting testing accuracy. Conversely, choosing a closed test rack with the test fixtures installed inside would prevent manual operation of the test fixtures, requiring testing in a cleanroom, leading to higher testing costs.

[0004] Furthermore, existing testing equipment suffers from poor product compatibility when performing functional tests on PCBAs of various specifications. This is because the specifications of the devices under test differ, requiring different test fixtures, test racks, and even test equipment. Moreover, when testing PCBAs of various specifications, frequent component installation and adjustment are necessary when the specifications of the PCBA under test are changed, resulting in long testing cycles and low testing efficiency.

[0005] Therefore, an FCT functional test cabinet is needed to solve the problems of large test space, high testing cost, poor product compatibility and low testing efficiency when performing PCBA functional testing with existing test equipment. Utility Model Content

[0006] The purpose of this invention is to provide an FCT functional test cabinet to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an FCT functional test cabinet, comprising a test frame and a test fixture, wherein the test frame has several cavities for placing the test fixture and functional test instruments; the test fixture is detachably installed in the cavity, and at least part of the test fixture protrudes outside the cavity to form an external end, on which an operating component is installed; a test table and a test plate are installed inside the test fixture, the test table is used to place the test piece, and the test plate is used to install the test head.

[0008] 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.

[0009] Specifically, the front frame of the upper frame has a second opening, and part of the test fixture protrudes to the outside of the second opening to form an external end; the operating components include operating buttons, a power switch and a working indicator light; the operating buttons include a manual / automatic switching button and several manual operation buttons.

[0010] Specifically, the top closed end of the upper frame is rotatably mounted with a top cover that extends forward and is integrally formed with the front frame. The front frame has a mounting groove for mounting the human-machine interface device. A drawer is slidably mounted on the top inner side of the lower frame for placing the input device of the human-machine interface device. 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 inside of the top cover and the upper frame.

[0011] 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.

[0012] Specifically, a fixture mounting assembly is installed on the upper side of the lower frame, which includes several limiting guide plates and fixing components; several limiting guide plates are installed at intervals on the upper side of the lower frame to form a mounting station with a shape 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 and / or on the lower frame adjacent to the limiting guide plates to fix the test fixture to the mounting station.

[0013] Specifically, the fixing components include rotating pins and magnetic components; rotating pins 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 insertion port; several rolling components are installed at intervals on the lower frame where the installation station is located.

[0014] Specifically, the test fixture includes a lower frame and a test platform; the lower frame has an opening at the top and a hollow internal structure, and the test platform is hinged to the upper opening side of the lower frame via one side of the platform to form a third cavity with the hollow internal structure of the lower frame; the test table and test plate are mounted on the test platform.

[0015] Specifically, the test platform is equipped with a protective cover with an opening on one side, and the test platform can be moved out from the opening side of the protective cover; a top cover is hinged to the top of the protective cover, and a removable back plate is provided on the cover body away from the opening side; several matrix connectors and interface adapters are installed on the rear frame of the lower frame, operating components are installed on the front frame of the lower frame, and handling handles are installed on both sides of the frame.

[0016] 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.

[0017] Compared with the prior art, the beneficial effects of this utility model are: 1. The FCT functional test cabinet of this application includes a test rack and a test fixture, wherein the test rack has an internal cavity for housing the test fixture and test equipment, i.e., several functional test instruments. This allows the test fixture and test equipment to be installed inside the test rack, reducing the space occupied by the components. Considering that placing the test fixture inside the cavity is inconvenient for test operation, this application extends at least part of the test fixture outside the cavity to form an exposed end. An operating component is installed on the exposed end, allowing the operator to perform test operations on the test fixture through the exposed operating component, thereby reducing test costs. Furthermore, the test fixture of this application is detachably mounted on the test rack. This allows for functional testing of multiple specifications of PCBAs. When the specifications of the PCBA change, the test fixture can be removed separately and the test board and test head inside the fixture replaced, or a compatible test fixture or even the testing equipment can be replaced. The test fixture and test rack of this application adopt a separate design, enabling the sharing of functional testing instruments for multiple PCBA specifications. This allows the same test rack to be used under different testing requirements, reducing testing costs and improving product compatibility. When the PCBA changes, test components can be quickly replaced, resulting in a short component installation and debugging cycle and high testing efficiency.

[0018] 2. 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. The upper rack is fastened to the upper side of the lower rack through an open 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 testers. This arrangement allows the first cavity of the upper rack to be used for installing the test fixture, while the second cavity inside the lower rack is used for installing the functional testers, resulting in a compact FCT functional test cabinet with ample space for component installation.

[0019] 3. 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 a cooling fan is installed on the side door of the rear frame. This ensures that both the upper and lower racks have openable side doors on their front and rear sides, facilitating component installation, maintenance, and debugging. 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.

[0020] 4. Building upon the foregoing, the operating components of the test fixture in this application include operating buttons, a power switch, and a work indicator light; the operating buttons include a manual / automatic switch button and several manual operation buttons. This ensures that during functional testing via the test fixture, the PCBA under test is in a relatively enclosed test space, reducing the influence of the external environment on the test results and improving test accuracy. The exposed operating components facilitate testing from the outside 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.

[0021] 5. Building upon the foregoing, the lower rack of this application is equipped with a main power switch and a pneumatic triplet on its outer side, several dustproof cable trays on its upper side, and transfer wheels on its bottom. This allows most traditional functional testers to be installed in the second internal storage chamber of the lower rack, following a standard rack design. Combined with the main power switch, pneumatic triplet, and dustproof cable trays on the outer side of the lower rack, a single set of functional testers 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 and convenient transport.

[0022] 6. Based on the foregoing, the lower frame 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 position formed by the limiting guide plates, with the shape of the test fixture matching its shape, and then secured by the fixing components and magnetic components. By installing rolling components within the mounting position, rapid positioning and installation are achieved during test fixture installation, improving the component installation speed.

[0023] 7. 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.

[0024] 8. Based on the foregoing, the test platform of this application can be moved out from the opening side of the protective cover, so that during testing, the PCBA to be tested can be placed or picked up manually or automatically by using a feeding device, which can further reduce the workload of personnel or achieve the purpose of automatic material handling and automatic functional testing, thereby improving testing efficiency. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the FCT functional test cabinet in this embodiment; Figure 2 This is a schematic diagram (1) of the structure of the test rack of the FCT functional test cabinet in this embodiment 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 FCT functional test cabinet in this embodiment after the side doors on the front and rear sides are opened. Figure 4 This is a schematic diagram of the upper rack of the FCT functional test cabinet 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 FCT functional test cabinet in this embodiment after opening; Figure 6 This is a schematic diagram of the lower rack of the FCT functional test cabinet 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 FCT functional test cabinet in this embodiment after the side doors are opened; Figure 8 This is a schematic diagram of the test fixture of the FCT functional test cabinet in this embodiment (1); Figure 9 This is a schematic diagram (2) of the test fixture of the FCT functional test cabinet in this embodiment.

[0026] In the diagram: 1. Test rack; 2. Test fixture; 3. Functional tester; 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

[0027] 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 implementations of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model. For clarity, the FCT functional test cabinet of this embodiment is used for functional testing of multi-specification PCBAs.

[0028] Please see Figures 1-9This embodiment discloses an FCT functional testing cabinet, including a testing frame 1 and a testing fixture. The testing frame has several internal cavities for placing the testing fixture 2 and functional testing instruments 3. The testing fixture is detachably installed in the cavity, and at least part of the testing fixture protrudes outside the cavity to form an external end. An operating component 13 is installed on the external end. The testing fixture of this embodiment includes a lower frame, a testing platform 4, a testing table 5, a testing plate, and a testing head. The lower frame has an opening at the top and a hollow internal structure. The testing platform is hinged to the upper opening side of the lower frame via one side of the platform to form a third cavity with the hollow internal structure of the lower frame. The testing table 5 and the testing plate 6 are installed on the testing platform. A movable plate is movably mounted on the test platform in the direction of outward movement, and the test platform is fixedly mounted on the movable plate. A first cylinder 7 is mounted on the test platform, and the power end of the first cylinder is connected to the movable plate. The test plate is driven by a driving component to be movably mounted on the test fixture towards the test platform. In this embodiment, the driving component includes a second cylinder 8 and a guide rod 9. Vertical guide rods are respectively mounted on the test platforms on both sides of the test platform. The test plate is slidably mounted on the guide rods, and the second cylinder is fixedly mounted on the test platform, with its power end connected to the test plate. A test head is mounted on the test plate at the corresponding position of the connector of the PCBA10 under test. The PCBA under test is mounted on the test platform, and the test head is electrically connected to the functional testing instrument.

[0029] 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 external end. The operating components of the test fixture include operating buttons, a power switch, and a working indicator light. The operating buttons include a manual / automatic switching button and several manual operation buttons. The manual operation buttons in this embodiment include an extension button for extending the first cylinder, a retraction button for retracting, an up button for raising the second cylinder, and a down button for lowering. Additionally, the top closed end of the upper frame in this embodiment is rotatably mounted with a top cover 14, which extends forward and is integrally formed with the front frame. The front frame has a mounting groove for mounting a touchscreen 15. A drawer 16 is slidably mounted on the top inner side of the lower frame, and a mouse and keyboard are mounted on the drawer, 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.

[0030] 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 chucks 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 chucks 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. 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.

[0031] Furthermore, in this embodiment, a protective cover 27 with an opening on one side is installed on the test platform, and a 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 removable back plate 29 is provided on the cover body away from the opening side; three matrix connectors 30 and four interface adapters 31 are installed on the rear frame of the lower frame. An operating component is installed on the front frame of the lower frame, and a handling handle 26 is installed on each of the two side frames.

[0032] Working Principle: In this embodiment of the FCT functional test cabinet, the operator first selects the appropriate test bench, test head, and testing instruments (i.e., functional test instruments) according to the specifications and dimensions of the PCBA under test. Then, the operator installs the test bench onto the test fixture, installs the test head on the test plate, and installs the functional test instruments in the second cavity of the lower rack. Next, the operator connects the circuitry and cylinder piping. Then, using the handling handles on both sides of the test fixture, the operator pushes the test fixture from the second opening side of the upper rack into the first cavity. After the rear 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 test instruments via the matrix connector and interface adapter on the back of the test fixture. Finally, the operator sets the equipment parameters using the touchscreen, mouse, and keyboard to control the operation of components such as the first and second cylinders.

[0033] 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 activates to drive the moving plate to retract, thus retracting the test table into the test fixture. Then, the second cylinder activates to drive the test plate to slide along the guide rod towards the test table until the test plate presses against the PCBA under test, thereby driving the test head to mate with the connector of the PCBA under test, completing the interface connection. Then, functional testing is performed automatically. After the test is completed, the above components are reset. The moving plate drives the test table to extend from the second opening, and the PCBA that has completed the test is removed manually or by the robotic arm for subsequent automatic testing of other PCBAs. It should be noted that during testing, the operator can choose between manual or automatic testing modes as needed. Preferably, manual testing mode is used for the first test to ensure a smooth testing process and facilitate timely shutdown and debugging if problems are found during testing. After the test is completed without errors, automatic testing mode can be selected for automated testing to improve testing efficiency.

[0034] In this embodiment, when testing multi-specification PCBAs, 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 embodiment's FCT functional test cabinet has high product compatibility; the test rack can be used with various test fixtures and multiple DUT specifications, resulting in low testing costs and high testing efficiency.

[0035] 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 FCT functional test cabinet, comprising a test rack and a test fixture, characterized in that: The test frame has several internal cavities for placing test fixtures and functional testing instruments. The test fixtures are detachably installed in the cavities, and at least a portion of the test fixtures protrudes outside the cavities to form an external end. An operating component is installed on the external end. A test table and a test plate are installed inside the test fixture. The test table is used to place the test piece, and the test plate is used to install the test head.

2. The FCT functional test cabinet 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 FCT functional test cabinet according to claim 2, characterized in that: The front frame of the upper frame is provided with a second opening, and part of the test fixture is exposed to the outside of the second opening to form an external end; the operation components include operation buttons, a power switch and a working indicator light; the operation buttons include a manual / automatic switching button and several manual operation buttons.

4. The FCT functional test cabinet 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. The front frame has a mounting groove for installing a human-computer interaction device. A drawer is slidably installed on the top inner side of the lower frame for placing the input device of the human-computer interaction device. 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 FCT functional test cabinet 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 FCT functional test cabinet according to claim 3, characterized in that: A fixture mounting assembly is installed on the upper side of the lower frame, which includes several limiting guide plates and fixing components; several limiting guide plates are installed at intervals 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; fixing components are installed on the limiting guide plates and / or on the lower frame adjacent to the limiting guide plates to fix the test fixture to the installation station.

7. The FCT functional test cabinet according to claim 6, characterized in that: The fixing component includes a rotating pin and a magnetic suction component; the rotating pin is installed on the limiting guide plate corresponding to the two sides of the test fixture, and the magnetic suction component is installed on the lower frame on both sides of the limiting guide plate away from the test fixture placement port side; several rolling components are installed at intervals on the lower frame where the installation station is located.

8. The FCT functional test cabinet according to claim 1, characterized in that: The test fixture includes a lower frame and a test platform; the lower frame has an opening at the top and a hollow internal structure, and the test platform is hinged to the upper opening side of the lower frame via one side of the platform to form a third cavity with the hollow internal structure of the lower frame; the test table and test plate are mounted on the test platform.

9. The FCT functional test cabinet according to claim 8, characterized in that: The test platform is equipped with a protective cover with an opening on one side, and the test platform can be moved out from the opening side of the protective cover; a top cover is hinged to 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 rear frame of the lower frame, an operating component is installed on the front frame of the lower frame, and handling handles are installed on the two side frames respectively.

10. The FCT functional test cabinet 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.

Images