PCBA asynchronous automatic test platform device based on multi-track transmission

Abstract

The utility model discloses a PCBA asynchronous automatic test platform device based on multi-track transmission. The PCBA asynchronous automatic test platform device comprises a multi-track transmission system, a modularized test tool and a multi-station asynchronous test control system. The multi-track transmission system comprises a board feeding transmission transfer, a plurality of groups of parallel transmission and test butt joint tracks and a board discharging transmission transfer; the multi-station asynchronous test control system is respectively in control connection with the board feeding transmission transfer, the board discharging transmission transfer and the modular test tool; and a plate feeding transmission track and a plate discharging transmission track are respectively arranged on the plate feeding transmission transplanting part and the plate discharging transmission transplanting part. The PCBA testing device can effectively process different testing tasks in parallel, and is suitable for testing scenes of PCBA boards which are frequently switched in multiple varieties and small batches.

Description

Technical Field

[0001] This utility model relates to the field of automated testing technology in electronic manufacturing, specifically to a method for dynamic scheduling of PCBAs through a multi-track transmission system, combined with rapid replacement technology for modular test fixtures, supporting parallel asynchronous testing at multiple workstations, and significantly improving testing efficiency and system flexibility. Background Technology

[0002] Most product testing devices currently on the market are dedicated devices based on manual operation for one product or one type of product. They cannot achieve flexible and universal automatic transmission functions for multiple types of products, or they adopt a single-track transmission and single-station sequential testing mode, which has problems such as low testing efficiency, time-consuming tooling changes, and poor compatibility between different test items. Summary of the Invention

[0003] The purpose of this invention is to provide an efficient and flexible PCBA automatic testing platform that enables multi-station parallel asynchronous testing, rapid tooling change, and automatic generation of independent transmission test paths.

[0004] To achieve the above objectives, this utility model provides a PCBA asynchronous automatic test platform device based on multi-track transmission, comprising a multi-track transmission system, modular test fixtures, and a multi-station asynchronous test control system mounted on the test platform; the multi-track transmission system includes board infeed transmission and transfer, multiple sets of parallel transmission and test docking tracks, and board outfeed transmission and transfer; the multi-station asynchronous test control system is connected to the board infeed transmission and transfer, board outfeed transmission and transfer, and modular test fixtures respectively; the board infeed transmission and transfer and the board outfeed transmission and transfer are respectively provided with board infeed transmission tracks and board outfeed transmission tracks; each set of transmission and test docking tracks includes a transmission track and a test docking device; during the test, the board infeed transmission track and the board outfeed transmission track dock with the two ends of one set of transmission and test docking tracks, and the PCBA on the transmission track docks with the modular test fixture for transmission.

[0005] This invention utilizes a multi-station asynchronous test and control system to control the transmission and test docking tracks and the board infeed transmission and transfer and board outfeed transmission and transfer docking, thereby realizing the dynamic allocation of PCBAs among different transmission and docking tracks. The parallel configuration of multiple sets of transmission and test docking tracks effectively realizes the transmission and parallel testing of a single part of a multi-station PCBA.

[0006] Furthermore, the board feeding and transfer mechanism includes a board feeding and transfer mechanism for docking with the board feeding and transfer and testing docking rails, and a board feeding transfer rail mounted on the board feeding and transfer mechanism; the board output and transfer mechanism includes a board output and transfer mechanism for docking with the board feeding and transfer and testing docking rails, and a board output and transfer rail mounted on the board output and transfer mechanism; each set of transfer and testing docking rails includes a transfer rail, a rail lifting platform, and a testing docking device; the board feeding and transfer mechanism, the rail lifting platform, and the board output and transfer mechanism are respectively fixed on the testing platform; a vision inspection module for identifying PCBA models is provided on the board feeding and transfer rails; both ends of the transfer rails are respectively mounted on the corresponding rail lifting platforms; there are multiple sets of modular testing fixtures, the number of which is consistent with the number of transfer and testing docking rails; the modular testing fixtures are located below the corresponding transfer rails and are docked with the PCBAs transferred to the transfer rails through the testing docking device; the multi-station asynchronous test control system is connected to the vision inspection module, the board feeding and transfer mechanism, the rail lifting platform, and the board output and transfer mechanism respectively.

[0007] This invention uses a visual inspection module to identify PCBA models and a transfer mechanism to dynamically distribute PCBAs between different transport and docking tracks. At the same time, a track lifting platform controls the lifting of the transport tracks, facilitating the placement and removal of modular testing fixtures.

[0008] Furthermore, both the aforementioned feed board conveyor rails and feed board conveyor rails are automatic rails driven and controlled by servo motors to adjust the conveying speed and rail width. By configuring independently controlled servo motors, the conveying speed is precisely adjustable, and the rail width is also automatically adjusted.

[0009] Preferably, the transmission track consists of two independent sections.

[0010] Furthermore, the modular test fixture includes a test module, a detachable standardized interface, and a fixture locking device; the modular test fixture is locked onto the test platform by the fixture locking device; the test module interfaces with the PCBA through the standardized interface.

[0011] In some embodiments, as a preferred option, the standardized interfaces (including mechanical / electrical / signal interfaces) are plug-and-play, and the tooling locking device adopts a mechanical positioning and mechanical locking method of guide rail + positioning pin to ensure a short tooling changeover time.

[0012] This invention has the following advantages over the prior art:

[0013] This invention effectively realizes multi-station parallel asynchronous testing through the design of a multi-track asynchronous transmission system; combined with the setting of modular test fixtures, it effectively realizes rapid fixture replacement; and at the same time, it utilizes the multi-station asynchronous test control system to automatically generate independent transmission test paths.

[0014] The device of this invention can effectively process different test tasks in parallel, and is suitable for testing scenarios of PCBA boards with multiple varieties, small batches and frequent switching. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the testing platform device of this utility model;

[0016] Figure 2 for Figure 1 Schematic diagram of the structure for the transfer and transplanting via the central inlet plate;

[0017] Figure 3 for Figure 1 A schematic diagram of the structure of the transmission and testing docking track;

[0018] Figure 4 for Figure 1 A schematic diagram of the modular testing fixture;

[0019] Figure 5 This is a control flowchart for the test platform;

[0020] In the diagram, 1-board infeed transfer and transplanting, 2-board outfeed transfer and transplanting, 3-transfer and transfer docking track, 4-modular testing fixture, 41-test module, 42-standardized interface, 5-board infeed transfer track, 51-visual inspection module, 52-servo motor, 6-transfer mechanism, 7-transfer track, 8-track lifting platform, 9-test docking device. Detailed Implementation

[0021] The present invention will now be described in detail with reference to the accompanying drawings.

[0022] like Figures 1 to 4 As shown, this utility model discloses a PCBA asynchronous automatic test platform device based on multi-track transmission, including a multi-track transmission system, a modular test fixture 4, and a multi-station asynchronous test control system; wherein the multi-track transmission system includes board entry transmission and transfer 1, multiple sets of parallel transmission and test docking tracks 3, and board exit transmission and transfer 2; the modular test fixture 4 enables rapid replacement through standardized interfaces; and the multi-station asynchronous test control system supports personalized test path planning.

[0023] The feeding plate transfer and transplanting 1 consists of a feeding plate transfer track 5 and a transplanting mechanism 6. The feeding plate transfer track 5 is equipped with an independently controlled servo motor 52 for driving, and the transmission speed is precisely adjustable as well as the track width is automatically adjusted. The output plate transfer and transplanting 2 has the same structure and function as the feeding plate transfer and transplanting 1.

[0024] A visual inspection module 51 is fixedly installed on the board feeding and transmission track 5 to identify the PCBA model. The PCBA is dynamically allocated between different transmission and docking tracks by the transfer mechanism 6.

[0025] The transmission and testing docking track 3 can be configured in multiple parallel groups to realize asynchronous transmission and parallel testing of multi-station PCBA. It consists of transmission track 7, track lifting platform 8 and testing docking device 9. The transmission track consists of two independent sections of track.

[0026] The track lifting platform 8 is divided into two groups and fixed below both ends of the transmission track 7, supporting the lifting and lowering of the transmission track 7, which makes it easier to pick up and put down the modular testing tooling 4.

[0027] The test docking device 9 is fixed below the middle section of the transmission track 7 and is used for the docking and transmission of PCBA between the transmission track 7 and the modular test fixture 4.

[0028] The modular test fixture 4 consists of a test module 41, a standardized interface 42, and a fixture locking device. The standardized interface (including mechanical / electrical / signal interfaces) is plug-and-play. It adopts a mechanical positioning and mechanical locking method with guide rail 43 and positioning pin 44 to ensure a short tooling changeover time.

[0029] The test platform control system generates an independent asynchronous test path for each PCBA, adopts a "task queue" mechanism, supports parallel processing of different test tasks, and achieves data synchronization and status monitoring between workstations through industrial Ethernet.

[0030] In summary, the dynamic process of PCBA transmission and testing according to this utility model is as follows:

[0031] Combination Figure 4 For new product testing, it is necessary to replace the corresponding modular test fixture. First, disconnect the electrical signals of the previous modular test fixture, disassemble the standardized quick interface, loosen the fixture locking pin, and pull the fixture out of the guide rail. Then, reverse the operation, push the new product's modular test fixture into the guide rail, then lock the fixture locking pin, connect the standardized quick interface, and connect the fixture's electrical signals. In this way, the modular test fixture can be quickly installed.

[0032] Combination Figure 5 Upon receiving a production work order, the testing platform will begin product testing. The PCBA under test is first transferred from the upstream equipment and then enters the board transfer and relocation process at the entrance of this testing platform (path 1 / 2:1 shown in the diagram) (path 1 / 2:2 shown in the diagram). The vision inspection module scans and obtains the PCBA barcode, transmitting it to the testing platform control system. The control system then generates different transfer paths for testing based on the workstation task allocation mechanism. This explanation will cover two paths:

[0033] Path 1: The PCBA under test is sent to the front section of the first transmission and test docking track (path 1:3 in the diagram). The test docking device on the test docking track sends the PCBA into the modular test fixture for testing. After the test is completed, the control system packages the test results and product information and uploads them to the designated peripheral device. Then, the rear section of the first transmission and test docking track (path 1:4 in the diagram) sends the product out and enters the board output transmission and transfer (path 1 / 2:5 in the diagram). Then, it is sent from the test platform exit (path 1 / 2:6 in the diagram) to the next equipment.

[0034] Path 2: The infeed transfer mechanism moves through the transfer mechanism (path 3:1 in the diagram) and docks with the second transfer and testing docking track, sending the PCBA into the front section of the second transfer and testing docking track (path 2:3 in the diagram). The PCBA is then sent to the modular testing fixture for testing via the testing docking device on the testing docking track. After the test is completed, the control system packages the test results and product information and uploads them to the designated external device. Subsequently, the rear section of the second transfer and testing docking track (path 2:4 in the diagram) sends the product out. The outfeed transfer mechanism moves through the transfer mechanism (path 3:2 in the diagram) and docks with the second transfer and testing docking track, transferring the PCBA into the outfeed transfer track. Then, the outfeed transfer mechanism moves through the transfer mechanism (path 3:2 in the diagram) and docks with the next equipment track, sending the PCBA from the test platform exit (path 1 / 2:6 in the diagram) into the next equipment.

[0035] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements can be made without departing from the principle of the present utility model, and these improvements should also be considered within the protection scope of the present utility model.

Claims

1. A PCBA asynchronous automatic test platform device based on multi-track transmission, characterized in that, The system includes a multi-track transmission system, modular test fixtures, and a multi-station asynchronous test control system mounted on a test platform. The multi-track transmission system includes board infeed transfer, multiple sets of parallel transmission and test docking tracks, and board outfeed transfer. The multi-station asynchronous test control system is connected to the board infeed transfer, board outfeed transfer, and modular test fixtures respectively. The board infeed transfer and board outfeed transfer are respectively equipped with board infeed transfer tracks and board outfeed transfer tracks. Each set of transmission and test docking tracks includes a transfer track and a test docking device. During the test, the board infeed transfer track and the board outfeed transfer track dock with both ends of one set of transmission and test docking tracks, and the PCBA on the transfer track docks with the modular test fixture for transmission.

2. The PCBA asynchronous automatic test platform device according to claim 1, characterized in that, The board feeding and transfer mechanism includes a board feeding mechanism for docking and testing the docking rails, and a board feeding transfer rail mounted on the board feeding mechanism. The board output and transfer mechanism includes a board output mechanism for docking and testing the docking rails, and a board output transfer rail mounted on the board output mechanism. Each set of transfer and testing docking rails includes a transfer rail, a rail lifting platform, and a testing docking device. The board feeding mechanism, rail lifting platform, and board output mechanism are respectively fixed on the testing platform. The board feeding transfer rail is equipped with a visual inspection module for identifying PCBA models. Both ends of the transfer rail are respectively mounted on the corresponding rail lifting platform. The modular testing fixture consists of multiple sets, with the number consistent with the number of transfer and testing docking rails. The modular testing fixture is located below the corresponding transmission track and is connected to the PCBA on the transmission track via the testing docking device; the multi-station asynchronous testing control system is connected to the vision inspection module, the board feeding and transfer mechanism, the track lifting platform, and the board output and transfer mechanism.

3. The PCBA asynchronous automatic test platform device according to claim 2, characterized in that, Both the infeed conveyor track and the infeed conveyor track are automatic tracks whose transmission speed and track width are controlled by servo motors.

4. The PCBA asynchronous automatic test platform device according to claim 3, characterized in that, The modular test fixture includes a test module, a detachable standardized interface, and a fixture locking device; the modular test fixture is locked onto the test platform by the fixture locking device; the test module is connected to the PCBA through the standardized interface.

5. The PCBA asynchronous automatic test platform device according to claim 4, characterized in that, The tooling locking device includes a guide rail and a positioning pin; the guide rail is set on the test platform, and the modular test tooling is slidably set on the guide rail and locked by the positioning pin.

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