Optical module detection apparatus, optical module detection method, and multi-parallel detection method

Abstract

The application discloses a kind of optical module detection equipment, optical module detection method and multiple parallel detection methods, comprising: tray conveying track;Empty tray backflow track;Code scanner;First jacking positioning mechanism and second jacking positioning mechanism, sequentially set on tray conveying track along the conveying direction;First jacking positioning mechanism is used to lift and keep tray in temporary storage standby position, and after jacking, the tray is separated from tray conveying track;Second jacking positioning mechanism is used to lift and keep tray in working position, and after jacking, the tray is separated from tray conveying track;Two test workstations, each test workstation includes from front to back sequentially arranged: fiber plug module, optical module product placement positioning assembly, test board assembly;Multi-axis manipulator;Control system;It realizes tray circulation zero waiting, test workstation continuous operation, equipment comprehensive utilization maximization, improves the overall throughput efficiency of single equipment and multiple parallel production line.

Description

Technical Field

[0001] This invention relates to the field of optical module testing technology, and in particular to an optical module testing device, an optical module testing method, and a method for testing multiple modules in parallel. Background Technology

[0002] Optical modules are core components in optical communication systems, responsible for converting photoelectric signals. With the explosive growth of 5G, data centers, and cloud computing, extremely high demands are placed on the performance, reliability, and production capacity of optical modules. Automated testing is a crucial step in ensuring product quality during the manufacturing process of optical modules.

[0003] Traditional optical module testing equipment and methods have the following shortcomings: Firstly, regarding equipment architecture and pallet flow, existing technologies typically employ a single pallet transport track, with one or more test stations directly positioned to the side of this track. Once a pallet is full of optical modules under test flowing into the equipment, it usually needs to wait for all test stations within the equipment to complete all testing procedures for the previous batch of products before the pallet can be moved step-by-step to the next test position or exit the equipment. This "wait-move-wait" pattern causes the pallet transport track to remain stationary for extended periods, limiting the overall cycle time of the equipment to the slowest testing stage. More importantly, once a pallet from one device has completed all testing and exited, subsequent pallets under test often need to be transported from a distant upstream buffer area or the previous device. This long transport distance results in idle waiting periods while waiting for new pallets to flow in, limiting the overall throughput efficiency of a single device and multiple devices operating in parallel.

[0004] Secondly, in terms of optical module testing and docking, existing automated equipment generally suffers from high alignment accuracy requirements and is prone to damaging expensive components. Optical module testing requires establishing two critical connections simultaneously: an electrical interface connection with a high-speed test board (typically integrating bit error rate testing, clock recovery, and other functions) and a physical optical path connection with a standard fiber optic connector. Both connections demand extremely high alignment accuracy (typically at the micrometer level) and appropriate insertion / extraction force control. In traditional designs, the connection between the fiber optic connector driver and the fiber optic connector is often rigid and lacks an effective floating adaptive mechanism. When slight angles or offsets occur between the fiber optic connector and the optical interface on the optical module due to machining, assembly errors, or long-term wear, the rigid drive can easily cause physical damage to the fiber optic connector end face or the optical module's optical interface, leading to a significant increase in testing costs. Simultaneously, there is a lack of efficient pre-alignment structures between the test board assembly and the product placement and positioning assembly, often requiring complex vision positioning systems, increasing equipment costs and debugging difficulty.

[0005] Furthermore, from the perspective of the testing process, existing technologies are inefficient in handling retesting (secondary confirmation of NG products). When an optical module is judged to be non-compliant (NG) at the testing station, the traditional process usually involves directly placing the product back onto the tray using a multi-axis robotic arm and marking it as a defective product for shipment, or requiring manual intervention for retesting. If rapid retesting could be performed at an adjacent station or within the same station, false NGs caused by transient interference (such as static electricity, momentary poor contact, and temperature fluctuations) could be effectively eliminated, improving testing accuracy and product yield. However, existing processes lack support for this rapid retesting mode, often requiring complex return or reloading procedures.

[0006] Finally, in production line scenarios where multiple devices are deployed in parallel, the aforementioned problems are further amplified. Simply stringing multiple independent devices together end-to-end, with each device independently performing a "wait-test-wait" cycle, leads to a situation where the testing rhythms of each device are difficult to synchronize perfectly. Brief periods of idle time in upstream devices ripple through and amplify to downstream devices, resulting in low overall utilization of the entire production line. There is a lack of a conveying and buffering mechanism that enables zero-wait switching of pallet supply within each device without mutual interference.

[0007] Furthermore, during long-term continuous automated testing, fiber optic connector assemblies, being frequently plugged and unplugged, suffer increased optical signal transmission loss (greater insertion loss) due to dust, debris accumulation, or minor mechanical wear on their end faces, potentially leading to connection failure. Traditionally, manual cleaning or connector replacement is performed when test performance degrades, or periodic maintenance is required. This approach not only disrupts automated production cycles and reduces overall equipment efficiency (OEE), but also suffers from inconsistent manual cleaning practices and may introduce secondary contamination. More critically, after repeated plugging and unplugging, the relative installation position of the fiber optic connector and the drive mechanism may slightly shift, leading to decreased alignment accuracy and accelerated wear. Existing equipment lacks an integrated structure capable of automatically calibrating and cleaning fiber optic connector assemblies without relying on external vision systems. This inevitably leads to a decline in test yield and stability after prolonged operation, requiring frequent manual intervention and hindering the development of unmanned optical module testing equipment.

[0008] Therefore, a new technical solution needs to be researched to address the above problems. Summary of the Invention

[0009] In view of this, the present invention addresses the deficiencies of the existing technology, and its main objective is to provide an optical module testing device, an optical module testing method, and a multi-unit parallel testing method. It achieves zero waiting time for pallet transfer, continuous operation of the testing station, and maximizes the overall utilization rate of the equipment. It solves the capacity bottleneck problem caused by the mutual waiting between pallet transportation and testing operations in traditional solutions, and significantly improves the overall throughput efficiency of a single device and multiple parallel production lines.

[0010] To achieve the above objectives, the present invention adopts the following technical solution: An optical module testing device, comprising: A pallet conveyor track is used to convey pallets carrying optical module products. The pallet conveyor track has an inlet and an outlet at each end. An empty pallet return track is located beside the pallet conveying track to allow empty pallets to return. A barcode scanner, located at the entrance, is used to read the identification information on the tray; A first lifting and positioning mechanism and a second lifting and positioning mechanism are sequentially arranged on the pallet conveying track along the conveying direction; the first lifting and positioning mechanism is used to lift the pallet and hold it in a temporary storage position, and after lifting, the pallet is separated from the pallet conveying track; the second lifting and positioning mechanism is used to lift the pallet and hold it in a working position, and after lifting, the pallet is separated from the pallet conveying track. Two test stations are arranged side by side on both sides of the workstation; each test station includes, from front to back, the following components: Fiber optic plug module, which is connected to a fiber optic plug driver; Optical module product placement and positioning component, which has optical module placement positions; The test board assembly includes a test board and an interface socket disposed on the test board, the interface socket being provided with an interface for electrical connection with an optical module product; A multi-axis robotic arm is used to pick up and place optical module products between the trays at the workstation and various test stations. The control system, connected to the barcode scanner, the first lifting and positioning mechanism, the second lifting and positioning mechanism, the fiber optic plug drive device, the test board assembly, and the multi-axis robotic arm, is configured to execute a predetermined testing process.

[0011] As a preferred embodiment, the fiber optic plug module includes a fiber optic plug assembly, a fiber optic plug placement and positioning assembly, and a drive connection assembly; the fiber optic plug assembly is disposed on the fiber optic plug placement and positioning assembly; the fiber optic plug placement and positioning assembly and the drive connection assembly are connected via a floating connection structure; the drive connection assembly is drively connected to a fiber optic plug drive device. The interface socket is provided with at least one guide hole; The optical module product placement and positioning component has a pre-positioning guide post extending toward the test board component, which is used to insert into the guide hole so that the interface on the interface seat is precisely aligned with the other end of the optical module product located at the optical module placement position.

[0012] As a preferred option, it also includes: A calibration station and a cleaning station are set in an unused area of ​​the testing equipment; the calibration station is used to perform position and / or attitude calibration on the fiber optic plug assembly; the cleaning station is used to clean the fiber end face of the fiber optic plug assembly. The fiber optic plug driver device drives the fiber optic plug module to move back and forth between each test station, the calibration station and the cleaning station. The control system is also configured to perform a predetermined automatic calibration and cleaning process for the fiber optic plug assembly.

[0013] As a preferred embodiment, the calibration station is set up one-to-one with the fiber optic plug assemblies in the two test stations, and each fiber optic plug assembly is equipped with a dedicated calibration station; the cleaning station is one, which is shared by the two fiber optic plug assemblies.

[0014] As a preferred embodiment, the drive connection assembly includes a first connector and a second connector; The fiber optic plug placement and positioning assembly includes a floating seat and a placement seat; the fiber optic plug assembly is positioned on the placement seat, and the floating seat is connected to the placement seat; a compression spring is connected between the floating seat and the second connecting seat, and the compression spring provides an elastic restoring force in the insertion direction; the floating seat is connected to the first connecting seat and forms an elastic movable gap relative to the first connecting seat, and an elastic fulcrum is provided between the first connecting seat and the floating seat to provide the floating seat with an upward elastic restoring force; The floating seat is provided with a floating hole extending along the insertion direction, and the first connecting seat is connected with a pin extending along the insertion direction. The pin extends into the floating hole, and the cross section of the floating hole perpendicular to the insertion direction is larger than the cross section of the pin.

[0015] As a preferred embodiment, the optical module product placement and positioning assembly includes a mounting base, a placement and positioning fixture, a calibration and positioning cylinder, and a calibration and positioning block. The placement and positioning fixture is mounted on the mounting base, and a placement slot is provided on the top of the placement and positioning fixture as a placement position for the optical module. The calibration and positioning cylinder drives the calibration and positioning block to move in a horizontal direction perpendicular to the insertion direction to abut one side of the optical module product in the placement slot. A lower mold heating assembly is provided below the placement and positioning fixture to provide different modes of heating, cooling, and room temperature for the placement and positioning fixture. An upper mold heating assembly is provided above the test board. The upper mold heating assembly is driven to move up and down by a lifting cylinder, and a downward floating contact spring is provided on the bottom pressing surface of the upper mold heating assembly.

[0016] As a preferred embodiment, the fiber optic plug driving device and the optical module product placement and positioning component are driven by the same Y-axis driving device. The Y-axis driving device drives the fiber optic plug driving device and the optical module product placement and positioning component to move along the insertion direction. The fiber optic plug driving device includes a fiber optic plug X-axis displacement driving device and a fiber optic plug Y-axis displacement driving device. The fiber optic plug X-axis displacement driving device is driven by the Y-axis driving device. The fiber optic plug X-axis displacement driving device drives the fiber optic plug Y-axis displacement driving device to move along the X-axis. The fiber optic plug Y-axis displacement driving device drives the fiber optic plug module to move relative to the optical module product placement and positioning component along the Y-axis.

[0017] A detection method based on the optical module detection device described in any of the preceding claims, characterized by comprising the following steps: Step S1, Pallet Inflow: The pallet carrying the optical module product to be tested flows in from the inlet. After the barcode scanner reads the pallet identification information, it is transported along the pallet conveying track to the top of the first lifting and positioning mechanism. Step S2, Temporary storage lifting: The control system controls the first lifting and positioning mechanism to lift the pallet to the temporary storage position, so that it is removed from the pallet conveying track and remains stationary; Step S3, Work Replacement: After the pallet at the work station has completed all inspections and flowed out, the control system controls the first lifting and positioning mechanism to lower the pallet at the temporary standby position onto the pallet conveying track, and immediately convey it along the pallet conveying track to the top of the second lifting and positioning mechanism. Subsequently, the second lifting and positioning mechanism lifts the pallet to the work station. Step S4, Material Retrieval and Barcode Scanning: The multi-axis robotic arm retrieves the optical module product from the tray at the workstation and scans the barcode of the optical module product for identification. Step S5, Loading and Testing: The multi-axis robot places the optical module product into the optical module placement position of one of the testing stations to perform performance testing on the optical module product; Step S6, Unloading and Retest Judgment: After the test is completed, if the result is qualified, the multi-axis robot will put the optical module product back to the original position of the original tray; if the result is unqualified, the multi-axis robot will transfer the optical module product to another adjacent test station for retesting. If the retest is qualified, it will be put back on the tray; if the retest is still unqualified, it will be marked as a defective product and put back on the tray or placed in the defective product collection area. Step S7, Cyclic Detection: Repeat steps S4 to S6 until all optical module products in the tray of the workstation have been detected. Then, the control system controls the second lifting and positioning mechanism to lower the tray and move it to the outlet for outflow.

[0018] As a preferred embodiment, in step S5, after the multi-axis robot places the optical module product into the optical module placement position of one of the testing stations, the following steps are executed sequentially: Step S51: By cooperating with the pre-positioning guide post and the guide hole, one end of the optical module product is initially aligned with the interface of the test board assembly; Step S52: The fiber optic plug driving device drives the fiber optic plug assembly to move toward the optical module product, and uses the floating connection structure to adaptively adjust the alignment posture so that the fiber optic plug is precisely inserted into the other end of the optical module product. Step S53: The optical module product is electrically connected to the interface socket; Step S54: Start the test board assembly to perform performance testing on the optical module product; A parallel testing method for multiple optical module testing devices includes: Equipment deployment steps: Arrange multiple optical module testing devices as described in any of the preceding items in parallel along the tray conveying direction, so that the entrance of the next adjacent testing device is directly or through a transition track connected to the exit of the previous testing device, forming a serial production line; Continuous conveying process: Pallets flow sequentially along the pallet conveyor track of each testing device, and each testing device independently executes the following internal rapid replenishment process: While the current testing equipment is performing testing at its working position, its temporary backup position has a tray fully loaded with optical modules to be tested pre-stored by the first lifting and positioning mechanism; After the workstation's pallet completes all inspections and is lowered and removed by the second lifting and positioning mechanism, the temporary standby pallet immediately descends and is instantly moved to the workstation along the pallet conveying track, where it is lifted by the second lifting and positioning mechanism to begin the next round of inspections. This replacement process overlaps in time with the upstream equipment's action of conveying the next pallet. Multi-machine collaborative flow steps: Each testing device decouples its dependence on upstream pallet delivery into an asynchronous mode through its internal temporary backup position, so that the working position of each testing device is only occupied during its own testing cycle, and its replacement action does not wait for the pallet to be delivered by the upstream device. Empty tray return process: The empty trays in each testing device are returned via the empty tray return track for reloading the products to be tested.

[0019] Compared with existing technologies, this invention has significant advantages and beneficial effects. Specifically, as can be seen from the above technical solution, it mainly consists of an optical module testing device. Through the coordinated arrangement of a double-lifting positioning mechanism and a pallet conveying track, the optimized spatial layout of two testing stations and workstations, and the overall scheduling of the testing process by the control system, it achieves zero waiting time for pallet transfer, continuous operation of testing stations, and maximizes the comprehensive utilization rate of the equipment. This device solves the capacity bottleneck problem caused by the mutual waiting between pallet conveying and testing operations in traditional solutions, and significantly improves the overall throughput efficiency of a single device and multiple parallel production lines.

[0020] To more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0021] Figure 1 This is a diagram illustrating the internal structure of an optical module detection device according to an embodiment of the present invention; Figure 2 This is another internal structure diagram of the optical module detection device according to an embodiment of the present invention; Figure 3 yes Figure 2 Top view of the structure shown; Figure 4 This is a three-dimensional view of the pallet conveying track of a single testing device of the present invention; Figure 5 yes Figure 4 Top view of the structure shown; Figure 6 This is a three-dimensional view of the empty disk return track of a single testing device of the present invention; Figure 7 This is another internal structure diagram of the optical module testing device according to an embodiment of the present invention (mainly showing the fiber optic plug module and the optical module product placement and positioning component). Figure 8 This is a perspective view of an embodiment of the fiber optic plug module of the present invention; Figure 9 This is an exploded view of an embodiment of the optical fiber plug module of the present invention; Figure 10 This is a cross-sectional view of an embodiment of the optical fiber plug module of the present invention; Figure 11 This is a perspective view of the optical module product placement and positioning component according to an embodiment of the present invention; Figure 12 This is a perspective view of the test plate assembly and the upper mold heating assembly according to an embodiment of the present invention; Figure 13 This is an exploded view of the test plate assembly and the upper mold heating assembly according to an embodiment of the present invention; Figure 14 This is a cross-sectional view of the test plate assembly and the upper mold heating assembly according to an embodiment of the present invention; Figure 15 This is a side view of a single testing device of the present invention; Figure 16 This is a front view of multiple parallel detection devices of the present invention (only the detection devices are shown). Figure 17 This is a structural diagram illustrating one application scenario of multiple parallel detection devices according to the present invention; Figure 18 This is a structural diagram illustrating another application scenario of the multiple parallel detection devices of the present invention. Detailed Implementation

[0022] Please refer to Figures 1 to 18 As shown, it illustrates specific solutions for various embodiments of the present invention.

[0023] like Figures 1 to 6 An optical module testing device includes a frame and a tray conveying track 100-11, an empty tray return track 100-12, a barcode scanner 111, a first lifting and positioning mechanism and a second lifting and positioning mechanism, two testing stations, a multi-axis robot 109, a calibration station A6 and a cleaning station A5, and a control system.

[0024] The pallet conveying track 100-11 is used to convey the pallet A carrying the optical module product. The two ends of the pallet conveying track 100-11 are respectively provided with an inlet and an outlet. The empty pallet return track 100-12 is located beside the pallet conveying track and is used to return empty pallets. The barcode scanner 111 is located at the entrance and is used to read the identification information on the tray A; The first and second lifting and positioning mechanisms are sequentially arranged on the pallet conveying track 100-11 along the conveying direction. The first lifting and positioning mechanism is used to lift and hold pallet A in the temporary storage position A1, and after lifting, pallet A is separated from the pallet conveying track 100-11. The second lifting and positioning mechanism is used to lift and hold pallet A in the working position A2, and after lifting, pallet A is separated from the pallet conveying track 100-11. The pallet conveying track 100-11 can continue to convey other pallets without waiting for the test at working position A2 to be completed. Pallet A in the temporary storage position will not obstruct the passage of subsequent pallets. The two originally mutually restrictive links of conveying and testing are decoupled and executed in parallel. When the pallet at working position A2 completes the test and moves out, the pallet in the temporary storage position A1 immediately descends and is moved a short distance along the track to working position A2 for lifting. The conveying distance of this replacement action is only the distance between the two working positions, which is much smaller than the distance to re-convey a pallet from upstream equipment or buffer area. From the perspective of equipment operation, the testing operation at workstation A2 and the arrival of the next pallet are seamlessly connected in terms of time, eliminating the idle time of the equipment waiting for the pallet.

[0025] The two test stations are arranged side by side on both sides of the workstation A2. Each test station includes, from front to back, the following components arranged in sequence: an optical fiber plug module 110 connected to an optical fiber plug driver; an optical module product placement and positioning component with an optical module placement position A4; and a test board assembly corresponding to the test station A3. The test board assembly includes a test board 63 and an interface socket 64 disposed on the test board 63. The interface socket 64 is provided with an interface 641 for electrical connection with the optical module product. The multi-axis robot 109 is used to pick up and place optical module products between the pallet at the workstation and each test station. The control system is electrically connected to the barcode scanner 111, the first lifting and positioning mechanism, the second lifting and positioning mechanism, the fiber optic plug drive device, the test board assembly, and the multi-axis robot 109, and is configured to execute a predetermined detection process.

[0026] The calibration station A6 and cleaning station A5 are located in an unused area of ​​the testing equipment. Calibration station A6 is used to calibrate the position and / or attitude of the fiber optic connector assembly. Cleaning station A5 is used to clean the fiber end face of the fiber optic connector assembly. The fiber optic connector drive device drives the fiber optic connector module back and forth between each test station, calibration station A6, and cleaning station A5. The control system is also configured to execute a predetermined automatic calibration and cleaning process for the fiber optic connector assembly. Calibration station A6 corresponds one-to-one with the fiber optic connector assemblies in the two test stations, with each fiber optic connector assembly having a dedicated calibration station A6. There is one cleaning station A5, shared by two fiber optic connector assemblies. A pressure sensor is installed on the fiber optic connector assembly, and pressure feedback is used to evaluate the calibration status. By integrating dedicated calibration and cleaning stations for fiber optic connector assemblies into the optical module testing equipment, a fully automated maintenance closed loop of usage monitoring, automatic calibration, automatic cleaning, and reset is achieved, eliminating the interruption of automated production caused by manual periodic maintenance and enabling the equipment to operate continuously and stably for extended periods. The calibration and cleaning processes are clearly defined: the calibration station addresses the issue of decreased alignment accuracy, while the cleaning station addresses the problem of increased insertion loss caused by fiber end-face contamination. They complement each other, with calibration taking precedence over cleaning (cleaning is only performed if requirements are still not met after calibration), avoiding unnecessary cleaning operations and improving maintenance efficiency. Because the calibration and cleaning stations can be flexibly arranged in unused areas of the equipment, located between two test stations, they do not interfere with the existing tray transport track, the movement paths of the test stations, and the multi-axis robotic arm.

[0027] This invention arranges two test stations on opposite sides of the workstation, rather than on the same side or far from the workstation. This layout, combined with the optimized pick-and-place path of the multi-axis robot 109, achieves: 1. Shortest pick-and-place path: After picking up materials from the workstation tray, the multi-axis robot only needs a small rotation or translation to reach either test station, reducing the robot's idle travel time. 2. Support for "two-to-two" and "one-to-one" assembly line operations: The side-by-side layout allows the robot to grab two products and place them into two separate workstations. During steady-state testing, the robot can sequentially remove completed products from one workstation, return them to the tray, and then pick up new products from the tray and place them into that workstation, while the other workstation continues parallel testing. This spatial layout provides the physical basis for the assembly line collaborative operation of the robot and the test stations. 3. Overlapping testing and pick-and-place times: When one workstation is in the testing process, the robot can pick up and place items at another workstation. The testing time and the pick-and-place time overlap on the time axis, further compressing the average inspection cycle of a single product.

[0028] The control system does not simply control the actuators sequentially, but dynamically schedules the first lifting mechanism, the second lifting mechanism, the multi-axis robot, and each testing station based on the real-time status of the testing process. This optimizes the process: the control system can identify the different stages of "initial loading" and "steady-state cycle," automatically switching between "take two and put two" and "take one and put one" strategies, ensuring precise matching between the robot's movement rhythm and the testing rhythm. Furthermore, it enables intelligent handling of anomalies: after a station completes testing, the control system can determine whether the product should be returned to the pallet, moved to an adjacent station for retesting, or marked as defective, without manual intervention. In this embodiment, as Figures 7 to 14 As shown, The fiber optic plug module 110 includes a fiber optic plug assembly, a fiber optic plug placement and positioning assembly, and a drive connection assembly. The fiber optic plug assembly is disposed on the fiber optic plug placement and positioning assembly. The fiber optic plug placement and positioning assembly and the drive connection assembly are floatingly connected, such that: the fiber optic plug placement and positioning assembly floats and compensates for displacement relative to the drive connection assembly in the insertion direction, and also deflects relative to the insertion direction; the drive connection assembly is connected to a fiber optic plug driving device; the optical module product placement and positioning assembly has an optical module placement position A4; the fiber optic plug driving device drives the fiber optic plug. One end of the component facing the optical module placement position A4 is inserted into the optical module product; one or more pre-positioning guide posts 522 are provided on the optical module product placement and positioning component corresponding to the other end of the optical module placement position A4; the test board assembly includes a test board 63 and an interface seat 64 for the optical module product to be connected on the test board 63. The test board is connected to a testing instrument. The interface seat 64 is provided with an interface 641 and a guide hole 642. The pre-positioning guide post 522 is inserted into the guide hole 642. The other end of the interface 641 facing the optical module placement position A4 is inserted into the optical module product. The test board 63 is mounted on a sliding seat 62. A slider is installed at the bottom of the sliding seat 62 to slide along the Y-axis guide rail of the base frame 61 to adapt to the insertion direction. The position of the sliding seat 62 is determined by screws and locking blocks.

[0029] Because the fiber optic plug placement and positioning assembly and the drive connection assembly use a floating connection, it allows for minor displacement compensation during the insertion process, avoiding hard collision damage caused by assembly errors or machining tolerances. At the same time, through the cooperation of the pre-positioning guide post and the guide hole, the precise alignment between the optical module product placement and positioning assembly and the test board assembly is achieved. This ensures that the fiber optic plug assembly, the optical module product, and the interface socket form a coaxial insertion path, ensuring the reliability of signal transmission and solving the problems of interface wear and misalignment caused by repeated insertion and removal in optical module testing.

[0030] The drive connection assembly includes a first connector 42 and a second connector 44, respectively connected to the drive end of the fiber optic plug drive device; the fiber optic plug placement and positioning assembly includes a floating seat 43 and a placement seat 45; the fiber optic plug assembly is positioned on the placement seat 45, and the floating seat 43 is connected to the placement seat 45; one or more compression springs 46 are connected between the floating seat 43 and the second connector 44, and the compression springs 46 provide elastic restoring force in the insertion direction; the floating seat 43 is connected to the first connector 42 and forms an elastic movable gap relative to the first connector 42, and an elastic fulcrum 48 is provided between the first connector 42 and the floating seat 43 to provide the floating seat 43 with an upward elastic restoring force. By providing an elastic restoring force in the insertion direction with a compression spring, the fiber optic plug assembly has flexible buffering when inserted into the optical module, avoiding hard impact; at the same time, the elastic fulcrum provides an elastic restoring force in the vertical direction to compensate for positioning errors in the vertical direction. The combination of horizontal insertion direction and vertical floating compensation enables the fiber optic plug to adaptively align with the optical module interface, reducing positioning accuracy requirements and improving insertion success rate. The floating seat 43 has a floating hole 431 extending along the insertion direction. A pin 47 extending along the insertion direction is connected to the first connecting seat 42. The pin 47 extends into the floating hole 431, and the cross-section of the floating hole 431 perpendicular to the insertion direction is larger than the cross-section of the pin 47 perpendicular to the insertion direction. The pin 47 is mounted to the first connecting seat 42 by a screw 49. The floating guide structure between the floating seat and the first connecting seat uses a clearance fit between the pin and the floating hole. Because the cross-section of the floating hole is larger than the cross-section of the pin, the floating seat can generate a small displacement in a plane perpendicular to the insertion direction, achieving floating compensation in that plane. This structure is simple, reliable, low-cost, and does not occupy additional space. The first connector 42 has a through hole extending along the insertion direction. The floating seat 43 has an insert 433 extending along the insertion direction. The insert 433 passes through the through hole, and its bottom end contacts the top end of the elastic fulcrum 48. The top end of the insert 433 is connected to the groove 451 of the placement seat 45. The top end of the floating seat 43 has a receiving groove 432 for positioning the tail adhesive portion of the fiber optic plug assembly. A third connector 41 is connected below the first connector 42, and is connected to the drive end of the fiber optic plug driving device via the third connector 41. The insert passing through the through hole facilitates the relative movement guidance between the floating seat and the first connector, and also transmits the upward restoring force of the elastic fulcrum to the placement seat, allowing the fiber optic plug assembly to maintain an elastically raised posture when not inserted. The elastic fulcrum 48 is a columnar spring, and its top end can be hemispherical or spherical, etc.

[0031] The optical module product placement and positioning assembly includes a mounting base 51, a placement and positioning fixture 52, a calibration and positioning cylinder 53, and a calibration and positioning block 54. The placement and positioning fixture 52 and the calibration and positioning cylinder 53 are respectively mounted on the mounting base 51. The top of the placement and positioning fixture 52 is provided with a placement groove 521 as the optical module placement position A4. The calibration and positioning cylinder 53 drives the calibration and positioning block 54 to move in a horizontal direction perpendicular to the insertion direction, so as to abut one side of the optical module product in the placement groove 521. By driving the calibration and positioning block with the calibration and positioning cylinder, the optical module product in the placement groove 521 is laterally pushed and tightened, eliminating the gap between the product and the placement groove 521, ensuring that the optical module product is in a consistent position every time it is inserted, improving the insertion repeatability accuracy. The cylinder drive method can realize automatic control and adapt to the needs of automated testing. A lower mold heating assembly 55 is provided below the placement and positioning fixture 52 to provide different modes of heating, cooling, and room temperature for the placement and positioning fixture 52. Performance testing of optical module products under different temperature conditions is a necessary step. The lower mold heating component can precisely control the ambient temperature of optical module products, enabling switching between various testing modes such as high temperature, low temperature, and normal temperature, thus expanding the application range of testing equipment.

[0032] A heating element 72 is mounted above the test board 63. The heating element 72 is driven to move up and down by a lifting cylinder 73, which is mounted on a support frame 71. Correspondingly, the heating element 72 provides different heating, cooling, and room temperature modes to the top of the optical module product arriving at test station A3. A downward-pressing floating contact spring 721 is provided on the bottom pressing surface of the heating element 72 to prevent the heating element 72 from exerting a rigid pressing force on the optical module product. The upper and lower heating elements work together to provide dual-sided temperature control for the optical module product, simulating the actual working environment. Simultaneously, the downward-pressing floating contact spring provides flexible pressing force, preventing damage to the optical module surface from rigid pressing and ensuring uniform temperature conduction and stable contact.

[0033] The fiber optic plug driving device and the optical module product placement and positioning component are driven by the same Y-axis driving device 31. The Y-axis driving device 31 drives the fiber optic plug driving device and the optical module product placement and positioning component to move along the insertion direction, ensuring a stable relative positional relationship between the two in the insertion direction, simplifying the control logic, reducing the number of driving components, and lowering costs. The fiber optic plug driving device includes a fiber optic plug X-axis displacement driving device 32 and a fiber optic plug Y-axis displacement driving device 33. The fiber optic plug X-axis displacement driving device 32 is driven by the Y-axis driving device 31. The fiber optic plug X-axis displacement driving device 32 drives the fiber optic plug Y-axis displacement driving device 33 to move along the X-axis, and the fiber optic plug Y-axis displacement driving device 33 drives the fiber optic plug module to move relative to the optical module product placement and positioning component along the Y-axis. The X-axis displacement driving device can realize independent horizontal adjustment of the fiber optic plug, while the Y-axis displacement driving device realizes independent insertion action of the fiber optic plug relative to the optical module product, allowing the fiber optic plug to be flexibly positioned in the XY plane, adapting to the differences in the insertion interface positions of different specifications of optical module products, and improving the flexibility of the equipment. During the specific testing operation, the optical module product is placed in the optical module placement position A4. The calibration positioning cylinder 53 drives the calibration positioning block 54 to clamp the optical module product. Then, the Y-axis driving device pushes the fiber optic plug driving device and the optical module product placement and positioning component together towards the test station A3, so that the optical module product is connected to the interface socket 64 on the test board 63. During the connection process, the pre-positioning guide post 522 is first inserted into the guide hole 642 for pre-alignment. Then, the optical module product is inserted into the interface 641 to avoid damage to the optical module product and / or the interface 641 due to misalignment. Then, the fiber optic plug Y-axis displacement driving device drives the fiber optic plug module to be inserted into the optical module product along the Y-axis. At this point, the insertion work is completed, and the test station A3 can start testing.

[0034] The above describes a multi-dimensional, multi-directional flexible insertion system achieved by using a floating connection between the fiber optic plug placement and positioning assembly and the drive connection assembly. This is achieved through a combination of a compression spring providing elastic restoring force in the insertion direction, an elastic fulcrum providing elastic restoring force in the vertical direction, and a gap fit between the pin and the floating hole to achieve in-plane floating compensation. Simultaneously, the precise fit between the pre-positioning guide post and the guide hole ensures the alignment accuracy between the test board assembly and the optical module product placement and positioning assembly. This structure effectively absorbs positional deviations caused by machining tolerances, assembly errors, and thermal deformation, achieving low-damage, high-reliability automatic insertion. Furthermore, by integrating upper / lower mold heating components, it can meet the testing requirements under different temperature conditions.

[0035] like Figures 1 to 6 ,as well as Figures 15 to 18 As shown, Multiple automatic optical module testing devices 100 are set up in parallel, and usually also include a loading machine 200 and a unloading machine 300.

[0036] like Figure 17 As shown, the loading machine 200 is located to the left of the leftmost optical module testing device 100, and is used to supply full-loaded pallets to the pallet conveying track 100-11 and receive empty pallets returning from the empty pallet return track 100-12; the unloading machine 300 is located to the right of the rightmost optical module testing device 100, and is used to receive full-loaded pallets that have completed testing from the pallet conveying track 100-11 and convey empty pallets to the empty pallet return track 100-12. By concentrating the pallet supply and receiving functions at both ends of the line, multiple testing devices can share a single loading and unloading system, reducing equipment costs and floor space.

[0037] In other embodiments, such as Figure 18 As shown, a buffer machine 400 is also configured before the feeding machine 300.

[0038] The number of testing devices is multiple, such as three, four, five, six, or more (e.g., more than ten), arranged adjacent to each other. Several devices can be flexibly configured in parallel according to actual production capacity requirements, ensuring scalability of production capacity. Each optical module testing device 100 includes a main body 100-1 and a testing instrument placement cabinet 100-2 located behind the main body 100-1. Each optical module testing device 100 has a main body 100-1 with left and right extending tray conveying tracks 100-11. The tray conveying tracks 100-11 have an inlet and an outlet at each end. The inlet of the next adjacent optical module testing device 100 connects to the outlet of the previous optical module testing device 100, allowing continuous conveying of tray A. A first lifting and positioning mechanism and a second lifting and positioning mechanism are sequentially arranged along the conveying direction on the tray conveying track 100-11. The first lifting and positioning mechanism lifts tray A to a temporary storage position A1 while avoiding the tray conveying track 100-11. The second lifting and positioning mechanism lifts tray A to a working position A2 while avoiding the tray conveying track 100-11. Each optical module testing device 100 has a barcode scanner 111 at its inlet. The barcode scanner 111 reads the identification information on tray A when there is no tray in the temporary storage position A1 of the optical module testing device 100 and the identification information of the incoming tray A has not been read. Each optical module testing device 100 is equipped with a testing instrument at its workstation A2. The testing instrument is electrically connected to the control system and is used to test the products in the tray. Each optical module testing device 100 performs an independent testing function. The testing instruments of each optical module testing device 100 are the same, and they can perform the same testing tasks in parallel without interfering with each other, thus realizing true parallel operation.

[0039] The control system is electrically connected to the barcode scanners 111, the first lifting and positioning mechanism, and the second lifting and positioning mechanism of all optical module testing devices 100. The control system is configured to: a) record the identification information of each tray read by the barcode scanner 111 and the testing device to which it has been claimed; b) when a tray enters the entrance of a testing device, if the identification information of the tray has been recorded as having been claimed by any previous testing device, then control the tray to pass directly through the testing device without scanning the barcode and without entering the working position or temporary storage position of the testing device; c) if the identification information of the tray has not been recorded, then according to the occupancy status of the working position and temporary storage position of each testing device, control the tray to flow to the nearest testing device that needs replenishment, and after being read by the barcode scanner of that testing device, enter the working position or temporary storage position of that testing device. Because each device is equipped with a barcode scanner, distributed identification is achieved. The control system records the claim status of each pallet. Claimed pallets are allowed to pass directly through subsequent devices, avoiding duplicate scanning. Unclaimed pallets dynamically flow to the nearest device that needs replenishment, achieving load balancing and significantly improving the throughput efficiency and equipment utilization of multiple parallel testing devices. For each optical module testing device 100, once the pallet at its working position has completed testing and flowed out, the spare pallet can immediately fill the gap. That is, the pallet in the temporary spare position is controlled to descend and instantly moved to the working position along the pallet conveyor track 100-11, where it is lifted by the second lifting and positioning mechanism. This eliminates the time the equipment waits for long-distance pallet delivery from upstream, further improving equipment utilization.

[0040] The control system is also configured to: monitor the occupancy status of the temporary standby position A1 and the working position A2 of each optical module testing device 100 in real time, and determine the testing device that needs to be replenished and its distance from the current position of the pallet based on the occupancy status, so as to ensure that the pallet is always sent to the nearest device that needs to be replenished, thereby minimizing the pallet conveying distance and improving the overall turnover efficiency.

[0041] The pallet conveyor track 100-11 includes a track frame 101 arranged on opposite sides, a track motor 102, and a track belt 103 arranged on opposite sides. The track belt 103 is driven by the track motor 102, and a clearance space is reserved between the track frame 101 and the track belt 103. The belt conveyor is a mature and standardized conveying component, which is convenient to select and easy to maintain, and can stably and reliably realize the straight-line conveying of pallets. A stop positioning mechanism is provided on the right side of the temporary storage position and the working position within the clearance space. It includes a stop cylinder 106 and a stop block 107. The stop cylinder 106 drives the stop block 107 to rise and fall within the clearance space. When rising, it is used to block pallet A for pre-positioning during lifting; when falling, it is used to allow pallet A to pass along the track. Position sensors 108 are installed at the corresponding entrances and exits within the clearance space to sense the position information of pallet A flowing in and out. Similarly, position sensors 108 are installed on the track frame 101 at the corresponding temporary storage position A1 and working position A2 to sense the position information of pallet A reaching the temporary storage position A1 and working position A2, respectively. Both the first and second lifting and positioning mechanisms include a lifting cylinder 104 and a support member 105. The support member 105 includes two support arms located on the front and rear sides of the track frame 101, respectively. The lifting cylinder 104 drives the support member 105 to rise and fall. When rising, it lifts pallet A away from the track belt 103 without affecting the normal transport of other pallets below. When falling, it moves below the track belt 103 to avoid interference. This structure is simple, reliable, and has a fast response speed, enabling rapid lifting and lowering of the pallet.

[0042] Each optical module testing device 100 is also equipped with a left-right extending empty tray return track 100-12. The empty tray return track 100-12 is arranged parallel to the tray conveying track 100-11 and is located behind the tray conveying track 100-11. The conveying direction of the empty tray return track 100-12 is opposite to that of the tray conveying track 100-11. The two ends of the empty tray return track 100-12 are also provided with inlets and outlets, respectively, for connecting adjacent optical module testing devices 100, so that empty trays can be continuously conveyed. Empty trays that have been tested and unloaded at the end of the parallel equipment can automatically return to the loading end through the empty tray return track 100-12, forming a closed loop of full tray feeding and empty tray return, which eliminates the need for manual intervention in recycling and improves the degree of automation. Similarly, the empty disc return track 100-12 includes a return track frame 101' arranged on the front and rear sides, a return track motor 102', and a return track belt 103' arranged on the front and rear sides. The return track belt 103' arranged on the front and rear sides is driven by the return track motor 102'. A return clearance space is reserved between the return track frame 101' and the return track belt 103' arranged on the front and rear sides. Return position sensors 104' are provided at the inlet and outlet.

[0043] The optical module testing equipment has a product barcode scanner 111 located behind workstation A2. Behind the barcode scanner 111 are two test stations A3 spaced apart. Optical module placement station A4 and fiber optic connector assemblies are sequentially positioned opposite each other in front of test station A3, with the fiber optic connector assemblies located in front of optical module placement station A4. The optical module testing equipment 100 is equipped with a multi-axis robotic arm 109 for picking up optical module products from the tray at workstation A2 and placing them in optical module placement station A4. The fiber optic connector assembly is connected to a displacement drive mechanism that moves it toward optical module placement station A4 to insert it into the optical module product and pushes the optical module product to test station A3 for testing. A test board is provided at test station A3, with pre-drilled interfaces for optical module product docking. The test board connects to testing instruments. The testing instruments in the testing instrument placement cabinet 100-2 can be commercially available mature testing instruments. This solution primarily aims to achieve more efficient automated flow of tray products; specific testing items are not limited. For the fiber optic connector assembly, it needs to be plugged into each optical module product placed on the optical module placement position A4. The fiber optic connector assembly adopts a floating design to achieve flexible plugging with the optical module product. When the fiber optic connector assembly is used for a period of time or the number of plugging reaches a set number, the fiber optic connector assembly is moved to the calibration station A6 on the optical module testing equipment 100. Each fiber optic connector assembly is equipped with a calibration station A6. In addition, the optical module testing equipment 100 is also equipped with a cleaning station A5 for cleaning the fiber optic connector assembly. The fiber optic connector assembly can be moved to the cleaning station A5 for automatic cleaning when it is used for a period of time, the number of plugging reaches a set number, or the fiber optic connector assembly does not meet the usage requirements after calibration.

[0044] In this way, multiple testing devices can operate in parallel, avoid repeated scanning, achieve dynamic load balancing, seamless workstation switching, and automatic empty pallet return. By adopting a distributed scanning architecture in which each optical module testing device 100 is equipped with a barcode scanner 111, and the control system is electrically connected to the barcode scanners 111 of all optical module testing devices 100, the first lifting and positioning mechanism, and the second lifting and positioning mechanism, a claiming and recording mechanism can be implemented. The control system records the claiming status of each pallet, and enables the subsequent equipment to pass through the claimed pallets directly, avoiding repeated scanning operations. By monitoring the occupancy status of working position A2 and spare position A1 of each optical module testing device 100 in real time, dynamic flow control of tray A is achieved, ensuring that tray A is sent to the nearest device that needs replenishment, thus achieving load balancing. By setting two lifting stations, working position A2 and spare position A1, on each optical module testing device 100, waiting time is eliminated. Through the parallel arrangement of empty tray return tracks and centralized loading and unloading machines, the structure is compact, realizing complete automated logistics and improving the overall circulation efficiency and overall utilization rate of multiple parallel automatic testing devices.

[0045] A detection method based on the optical module detection equipment described above. Includes the following steps: Step S1, Pallet Inflow: The pallet carrying the optical module product to be tested flows in from the inlet. After the barcode scanner reads the pallet identification information, it is transported along the pallet conveying track to the top of the first lifting and positioning mechanism. Step S2, Temporary storage lifting: The control system controls the first lifting and positioning mechanism to lift the pallet to the temporary storage position, so that it is removed from the pallet conveying track and remains stationary; Step S3, Work Replacement: After the pallet at the work station has completed all inspections and flowed out, the control system controls the first lifting and positioning mechanism to lower the pallet at the temporary standby position onto the pallet conveying track, and immediately convey it along the pallet conveying track to the top of the second lifting and positioning mechanism. Subsequently, the second lifting and positioning mechanism lifts the pallet to the work station. Step S4, Material Retrieval and Barcode Scanning: The multi-axis robotic arm retrieves the optical module product from the tray at the workstation and scans the barcode of the optical module product for identification. Step S5, Loading and Testing: The multi-axis robot places the optical module product into the optical module placement position of one of the testing stations to perform performance testing on the optical module product; Step S6, Unloading and Retest Judgment: After the test, if the result is qualified, the multi-axis robot will put the optical module product back to the original position of the original tray; if the result is unqualified, the multi-axis robot will transfer the optical module product to another adjacent test station for retesting. If the retest is qualified, it will be put back on the tray; if the retest is still unqualified, it will be marked as a defective product and put back on the tray or placed in the defective product collection area. Retesting at adjacent stations can effectively filter out false failures caused by accidental factors (such as instantaneous vibration, poor contact), greatly reduce the misjudgment rate, improve the product yield, and avoid complex external retesting processes.

[0046] Step S7, Cyclic Testing: Repeat steps S4 to S6 until all optical module products in the tray of the workstation have been tested. Then, the control system controls the second lifting and positioning mechanism to lower the tray and move it to the outlet for outflow. In step S5, when the tray of the workstation is being loaded for the first time, the multi-axis robot performs a "take two, put two" operation: that is, it takes out two optical module products and puts them into two side-by-side test stations respectively. In subsequent cyclic testing, the multi-axis robot performs a "take one, put one" operation: that is, it takes out one tested optical module product from one test station each time, and then takes a new optical module product to be tested from the tray and puts it into the empty test station. Automatic maintenance of fiber optic connector assemblies: During testing, the control system records the cumulative number of insertions / removals or the cumulative usage time of each fiber optic connector assembly in real time. When the cumulative value of any fiber optic connector assembly reaches a first set threshold, the control system controls the multi-axis robot to move the fiber optic connector assembly from the testing station to the corresponding calibration station for position calibration. If the alignment accuracy requirements are still not met after calibration, or if the cumulative value reaches a second set threshold, the fiber optic connector assembly is moved to the cleaning station for automatic cleaning. After calibration and / or cleaning, it is moved back to the original testing station for continued use. The control system records the usage of each fiber optic connector assembly in real time, triggering maintenance only when the threshold is reached. This avoids frequent maintenance affecting production capacity and prevents performance degradation due to overuse. The threshold is adjustable to accommodate fiber optic connectors of different quality.

[0047] In step S5, after the multi-axis robot places the optical module product into the optical module placement position of one of the testing stations, the following steps are executed sequentially: Step S51: By cooperating with the pre-positioning guide post and the guide hole, one end of the optical module product is initially aligned with the interface of the test board assembly; Step S52: The fiber optic plug driving device drives the fiber optic plug assembly to move toward the optical module product, and uses the floating connection structure to adaptively adjust the alignment posture so that the fiber optic plug is precisely inserted into the other end of the optical module product. Step S53: The optical module product is electrically connected to the interface socket; Step S54: Start the test board assembly to perform performance testing on the optical module product; And, combined Figure 17 and Figure 18 As shown, a parallel testing method for multiple optical module testing devices is provided. include: Equipment deployment steps: Multiple optical module testing devices as described above are arranged in parallel along the tray conveying direction, so that the entrance of the next adjacent testing device is directly or through a transition track connected to the exit of the previous testing device, forming a serial production line; Continuous conveying process: Pallets flow sequentially along the pallet conveyor track of each testing device, and each testing device independently executes the following internal rapid replenishment process: While the current testing equipment is performing testing at its working position, its temporary backup position has a tray fully loaded with optical modules to be tested pre-stored by the first lifting and positioning mechanism; After the workstation's pallet completes all inspections and is lowered and removed by the second lifting and positioning mechanism, the temporary standby pallet immediately descends and is instantly moved to the workstation along the pallet conveying track, where it is lifted by the second lifting and positioning mechanism to begin the next round of inspections. This replacement process overlaps in time with the upstream equipment's action of conveying the next pallet. Multi-machine collaborative flow steps: Each testing device decouples its dependence on upstream pallet delivery into an asynchronous mode through its internal temporary backup position, so that the working position of each testing device is only occupied within its own testing cycle, and its replacement action does not wait for the pallet to be delivered by the upstream device, thereby eliminating the flow waiting between devices and realizing uninterrupted continuous pallet delivery. Online maintenance synchronization steps: Each testing device independently performs its automatic calibration and cleaning process for its fiber optic plug assembly. This maintenance process is executed in parallel with the normal testing process of the equipment, and the turnover of the trays in the temporary spare position and the working position is not affected during the maintenance.

[0048] It also includes an empty tray return step: the empty trays in each testing device are returned via the empty tray return track to be reloaded with the products to be tested.

[0049] As can be seen from the above, the zero-wait replenishment, conveying, and testing decoupling achieved by the testing equipment makes this device particularly suitable for deployment in series with multiple units. When multiple units of this invention are connected end-to-end, each unit operates independently. Each unit decouples its dependence on the upstream pallet into an asynchronous mode through its internal temporary storage backup position. The upstream unit can convey the pallet downstream without waiting for the downstream unit to complete testing, and the downstream unit can continue operating through the temporary storage backup position without waiting for the upstream unit to supply material. Simultaneously, it eliminates bottlenecks in the entire production line. In traditional series production lines, a stoppage in any unit will cause a complete line stoppage. This invention, through the buffering mechanism within each unit, ensures that short-term pauses in each unit (such as fluctuations in testing time) are absorbed by the temporary storage backup position and do not propagate to the entire line. Therefore, its overall throughput is close to the sum of the throughput of a single device. Theoretical analysis shows that, with reasonable configuration of the buffer size of the temporary spare bits, the overall throughput of multiple devices connected in series can reach more than 95% of the throughput of a single device (N is the number of devices), while traditional solutions can usually only reach 70%-80%.

[0050] The above description is merely a preferred embodiment of the present invention and does not constitute any limitation on the technical scope of the present invention. Therefore, any minor modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. An optical module testing device, characterized in that, include: A pallet conveyor track is used to convey pallets carrying optical module products. The pallet conveyor track has an inlet and an outlet at each end. An empty pallet return track is located beside the pallet conveying track to allow empty pallets to return. A barcode scanner, located at the entrance, is used to read the identification information on the tray; A first lifting and positioning mechanism and a second lifting and positioning mechanism are sequentially arranged on the pallet conveying track along the conveying direction; the first lifting and positioning mechanism is used to lift the pallet and hold it in a temporary storage position, and after lifting, the pallet is separated from the pallet conveying track; the second lifting and positioning mechanism is used to lift the pallet and hold it in a working position, and after lifting, the pallet is separated from the pallet conveying track. Two test stations are arranged side by side on both sides of the workstation; each test station includes, from front to back, the following components: Fiber optic plug module, which is connected to a fiber optic plug driver; The fiber optic plug module includes a fiber optic plug assembly, a fiber optic plug placement and positioning assembly, and a drive connection assembly; the fiber optic plug assembly is disposed on the fiber optic plug placement and positioning assembly. The fiber optic plug placement and positioning component is connected to the drive connection component via a floating connection structure; the drive connection component is connected to the fiber optic plug drive device via a transmission connection. An optical module product placement and positioning component is provided with an optical module placement position; a pre-positioning guide post extends from the optical module product placement and positioning component toward the test board component; The test board assembly includes a test board and an interface socket disposed on the test board. The interface socket is provided with an interface for electrical connection with an optical module product. The interface socket is provided with at least one alignment hole for the pre-positioning alignment post to be inserted into the alignment hole, so that the interface on the interface socket is precisely aligned with the other end of the optical module product located at the optical module placement position. A multi-axis robotic arm is used to pick up and place optical module products between the trays at the workstation and various test stations. The control system, connected to the barcode scanner, the first lifting and positioning mechanism, the second lifting and positioning mechanism, the fiber optic plug drive device, the test board assembly, and the multi-axis robotic arm, is configured to execute a predetermined testing process.

2. The optical module testing device according to claim 1, characterized in that, Also includes: A calibration station and a cleaning station are set in an unused area of ​​the testing equipment; the calibration station is used to perform position and / or attitude calibration on the fiber optic plug assembly; the cleaning station is used to clean the fiber end face of the fiber optic plug assembly. The fiber optic plug driver device drives the fiber optic plug module to move back and forth between each test station, the calibration station and the cleaning station. The control system is also configured to perform a predetermined automatic calibration and cleaning process for the fiber optic plug assembly.

3. The optical module testing device according to claim 2, characterized in that, The calibration station is set up one-to-one with the fiber optic plug assembly in the two test stations, and each fiber optic plug assembly is equipped with a dedicated calibration station; the cleaning station is one, which is shared by the two fiber optic plug assemblies.

4. The optical module testing device according to claim 1, characterized in that, The drive connection component includes a first connector and a second connector; The fiber optic plug placement and positioning assembly includes a floating seat and a placement seat; the fiber optic plug assembly is positioned on the placement seat, and the floating seat is connected to the placement seat; a compression spring is connected between the floating seat and the second connecting seat, and the compression spring provides an elastic restoring force in the insertion direction; the floating seat is connected to the first connecting seat and forms an elastic movable gap relative to the first connecting seat, and an elastic fulcrum is provided between the first connecting seat and the floating seat to provide the floating seat with an upward elastic restoring force; The floating seat is provided with a floating hole extending along the insertion direction, and the first connecting seat is connected with a pin extending along the insertion direction. The pin extends into the floating hole, and the cross section of the floating hole perpendicular to the insertion direction is larger than the cross section of the pin.

5. The optical module testing device according to claim 1, characterized in that, The optical module product placement and positioning assembly includes a mounting base, a placement and positioning fixture, a calibration and positioning cylinder, and a calibration and positioning block. The placement and positioning fixture is mounted on the mounting base, and a placement slot is provided on the top of the placement and positioning fixture as a placement position for the optical module. The calibration and positioning cylinder drives the calibration and positioning block to move in a horizontal direction perpendicular to the insertion direction to abut one side of the optical module product in the placement slot. A lower mold heating assembly is provided below the placement and positioning fixture to provide different modes of heating, cooling, and room temperature for the placement and positioning fixture. An upper mold heating assembly is provided above the test board. The upper mold heating assembly is driven to move up and down by a lifting cylinder, and a downward floating contact spring is provided on the bottom pressing surface of the upper mold heating assembly.

6. The optical module testing device according to claim 1, characterized in that, The fiber optic plug driving device and the optical module product placement and positioning component are driven by the same Y-axis driving device, and the Y-axis driving device drives the fiber optic plug driving device and the optical module product placement and positioning component to move along the insertion direction. The fiber optic plug driving device includes a fiber optic plug X-axis displacement driving device and a fiber optic plug Y-axis displacement driving device. The fiber optic plug X-axis displacement driving device is driven by the Y-axis driving device. The fiber optic plug X-axis displacement driving device drives the fiber optic plug Y-axis displacement driving device to move along the X-axis. The fiber optic plug Y-axis displacement driving device drives the fiber optic plug module to move relative to the optical module product placement and positioning component along the Y-axis.

7. A detection method based on the optical module detection device according to any one of claims 1-6, characterized in that, Includes the following steps: Step S1, Pallet Inflow: The pallet carrying the optical module product to be tested flows in from the inlet. After the barcode scanner reads the pallet identification information, it is transported along the pallet conveying track to the top of the first lifting and positioning mechanism. Step S2, Temporary storage lifting: The control system controls the first lifting and positioning mechanism to lift the pallet to the temporary storage position, so that it is removed from the pallet conveying track and remains stationary; Step S3, Work Replacement: After the pallet at the work station has completed all inspections and flowed out, the control system controls the first lifting and positioning mechanism to lower the pallet at the temporary standby position onto the pallet conveying track, and immediately convey it along the pallet conveying track to the top of the second lifting and positioning mechanism. Subsequently, the second lifting and positioning mechanism lifts the pallet to the work station. Step S4, Material Retrieval and Barcode Scanning: The multi-axis robotic arm retrieves the optical module product from the tray at the workstation and scans the barcode of the optical module product for identification. Step S5, Loading and Testing: The multi-axis robot places the optical module product into the optical module placement position of one of the testing stations to perform performance testing on the optical module product; Step S6, Unloading and Retest Judgment: After the test is completed, if the result is qualified, the multi-axis robot will put the optical module product back to the original position of the original tray; if the result is unqualified, the multi-axis robot will transfer the optical module product to another adjacent test station for retesting. If the retest is qualified, it will be put back on the tray; if the retest is still unqualified, it will be marked as a defective product and put back on the tray or placed in the defective product collection area. Step S7, Cyclic Detection: Repeat steps S4 to S6 until all optical module products in the tray of the workstation have been detected. Then, the control system controls the second lifting and positioning mechanism to lower the tray and move it to the outlet for outflow.

8. The detection method according to claim 7, characterized in that, In step S5, after the multi-axis robot places the optical module product into the optical module placement position of one of the testing stations, the following steps are executed sequentially: Step S51: By cooperating with the pre-positioning guide post and the guide hole, one end of the optical module product is initially aligned with the interface of the test board assembly; Step S52: The fiber optic plug driving device drives the fiber optic plug assembly to move toward the optical module product, and uses the floating connection structure to adaptively adjust the alignment posture so that the fiber optic plug is precisely inserted into the other end of the optical module product. Step S53: The optical module product is electrically connected to the interface socket; Step S54: Start the test board assembly to perform performance testing on the optical module product.

9. A parallel testing method for multiple optical module testing devices, characterized in that, include: Equipment deployment steps: Multiple optical module testing devices as described in any one of claims 1-6 are arranged in parallel along the tray conveying direction, so that the entrance of the next adjacent testing device is directly or through a transition track connected to the exit of the previous testing device, forming a serial production line; Continuous conveying process: Pallets flow sequentially along the pallet conveyor track of each testing device, and each testing device independently executes the following internal rapid replenishment process: While the current testing equipment is performing testing at its working position, its temporary backup position has a tray fully loaded with optical modules to be tested pre-stored by the first lifting and positioning mechanism; After the workstation's pallet completes all inspections and is lowered and removed by the second lifting and positioning mechanism, the temporary standby pallet immediately descends and is instantly moved to the workstation along the pallet conveying track, where it is lifted by the second lifting and positioning mechanism to begin the next round of inspections. This replacement process overlaps in time with the upstream equipment's action of conveying the next pallet. Multi-machine collaborative flow steps: Each testing device decouples its dependence on upstream pallet delivery into an asynchronous mode through its internal temporary backup position, so that the working position of each testing device is only occupied during its own testing cycle, and its replacement action does not wait for the pallet to be delivered by the upstream device. Empty tray return process: The empty trays in each testing device are returned via the empty tray return track for reloading the products to be tested.

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