PCBA single board automatic FCT testing device and testing method thereof

Abstract

The present invention discloses a PCBA single board automatic FCT test device and a test method thereof, and a PCBA single board automatic FCT test method, which is used for functional testing of smart meters, and includes step S1: a PCBA single board feeding connection line transfers a PCBA single board to be tested to a loading station; step S2: a first tray elevator lifts a tray transferred from a second tray elevator through a conveying line body from bottom to top, so that the tray is transferred from a lower layer of the conveying line body to an upper layer of the conveying line body. The PCBA single board automatic FCT test device and the test method thereof disclosed by the present invention are provided with a loading station, a first tray elevator, a second tray elevator, a conveying line body, a burning test cabinet and a sorting device, so as to realize a fully automatic FCT test of a PCBA single board, and truly realize unmanned testing.

Description

Technical Field

[0001] The invention belongs to the technical field of PCBA single board testing, and in particular relates to a PCBA single board automatic FCT testing device and a PCBA single board automatic FCT testing method. Background Art

[0002] As one of the most important energy sources in the 21st century, electricity has become an increasingly indispensable part of our daily lives. At the same time, with the continuous progress and development of the economy and the continuous improvement of people's living standards, people's consumption of electricity is also gradually increasing. In order to effectively save and reasonably manage electricity consumption, in recent years, my country has basically replaced most of the old mechanical meters with smart meters that are more accurate and easier to manage. With the increasing scale of smart grid construction and management efforts year by year, the State Grid's requirements for product quality and production capacity of smart meter manufacturers are also increasing year by year. The burning program and detection technology of the single board have become an indispensable part. Previously, the single board detection was done with independent crimping tooling, and one person operated 3 to 4 toolings alone. In order to meet production requirements, 6 people and 14 toolings were required to complete the operation, which not only had high labor costs but also low efficiency.

[0003] Therefore, further improvements are made to the above problems. Summary of the invention

[0004] The main purpose of the present invention is to provide a PCBA single board automatic FCT testing device and a testing method thereof, which realizes the fully automatic FCT testing of the PCBA single board by providing a loading station, a first tray elevator, a second tray elevator, a conveyor line body, a burning test cabinet and a sorting device, thereby truly realizing unmanned testing.

[0005] Another object of the present invention is to provide a PCBA single board automatic FCT testing device and a testing method thereof, which forms a circulating operation between the upper and lower layers of the conveyor line body through a first pallet elevator and a second pallet elevator, thereby enabling the pallets located on the conveyor line body to realize circulating operation, and has the advantages of high efficiency, intelligence and stable structure.

[0006] To achieve the above objectives, the present invention provides a PCBA single board automatic FCT test method for functional testing of smart meters, comprising the following steps:

[0007] Step S1: The PCBA board feeding connection line transfers the PCBA board to be tested to the loading station;

[0008] Step S2: the first pallet elevator lifts the (empty) pallet transferred from the second pallet elevator through the conveyor line from bottom to top, so that the (empty) pallet is transferred from the lower line body of the conveyor line body to the upper line body;

[0009] Step S3: placing the PCBA boards on the (empty) trays on the upper line in sequence, so that the trays carrying the PCBA boards are transferred to the programming test cabinet along with the upper line, so as to perform programming and functional tests on the PCBA boards and transmit the functional test results of each PCBA board to the sorting device;

[0010] Step S4: the upper line body transfers the tray carrying the PCBA boards after the functional test to the sorting device, and the sorting device sorts and distinguishes the qualified PCBA boards and the faulty PCBA boards after receiving the functional test results of each PCBA board, so that the qualified PCBA boards and the faulty PCBA boards are taken from the tray and placed in different areas;

[0011] Step S5: The upper line body transfers the sorted pallets to the second pallet elevator, and the second pallet elevator takes the pallet of the PCBA board and lowers it from top to bottom, so that the pallet is transferred from the upper line body of the conveyor line body to the lower line body, and then steps S2-S5 are executed in sequence, so that the FCT test of the PCBA board is fully automated.

[0012] As a further preferred technical solution of the above technical solution, in steps S1 to S3, the feeding detection device located at the PCBA single board feeding connection line generates a feeding signal after detecting each PCBA single board and transmits the feeding signal to the loading device located at the loading station, and the pallet detection device located at the first pallet elevator generates a pallet signal after detecting each pallet and transmits the pallet signal to the loading device, and the loading device matches the feeding signal and the pallet signal so that each PCBA single board is bound one by one to the pallet on the current upper line body, so that the loading device accurately places each PCBA single board on each (empty) pallet on the upper line body in turn.

[0013] As a further preferred technical solution of the above technical solution, step S4 is specifically implemented as the following steps:

[0014] Step S4.1: The sorting device takes the qualified PCBA boards from the tray and puts them into the PCBA board discharging connection line for subsequent processing;

[0015] Step S4.2: The sorting device takes the faulty PCBA board off the tray and puts it into the bad buffer area for subsequent manual inspection.

[0016] As a further preferred technical solution of the above technical solution, in step S3, the burning test cabinet determines whether there is a PCBA single board on the tray before burning and functional testing the PCBA single board (because when the feeding device judges the feeding signal and the tray signal, the number of trays on the assembly line will be more than the number of PCBA single boards, so sometimes empty trays are directly transmitted to the burning test cabinet) to form an execution signal or a non-execution signal. The burning test cabinet is provided with a plurality of burning test units, and each burning test unit matches a PCBA single board;

[0017] When the burning test unit receives the execution signal, the burning test unit fixes the PCBA board through the crimping device and the lifting device and performs burning and functional tests. During this process, the first tray elevator and the second tray elevator stop working so that the upper and lower layers of the conveying line body remain stationary, so that the burning test cabinet performs burning tests on the PCBA boards during this interval test time, and after the functional test results of each PCBA board are transmitted to the sorting device, the crimping device and the lifting device of each burning test unit release the current PCBA board, and after a preset delay time, the first tray elevator and the second tray elevator start working so that the upper and lower layers of the conveying line body continue to operate, so that the next batch of trays carrying PCBA boards enter the burning test cabinet for burning and functional tests;

[0018] When the burning and testing unit receives a non-execution signal, the crimping device and the lifting device of the burning and testing unit do not perform any action on the PCBA board.

[0019] As a further preferred technical solution of the above technical solution, within the total time of the interval test time plus the preset delay time, the loading device accurately places each PCBA single board on each (empty) tray on the upper line body in turn, and after the placement is completed, the loading device forms a placement completion signal. The loading device matches the placement time corresponding to each placement action from the beginning of placement to the formation of the placement completion signal with the total time to obtain the maximum placement completion signals formed within the total time, so that the loading device performs the corresponding placement action, and if the placement time cannot be reached within the last remaining time of the total time, the loading device does not perform the last placement action.

[0020] As a further preferred technical solution of the above technical solution, a first pallet elevator, a conveyor line body and a loading device are provided on both sides of the PCBA single board feeding connection line, and a second pallet elevator, a conveyor line body and a sorting device are provided on both sides of the PCBA single board discharging connection line (two sets of devices are provided to improve the test efficiency).

[0021] To achieve the above purpose, the present invention also provides a PCBA single board automatic FCT test device, including a loading station, a first tray elevator, a second tray elevator, a conveyor line body, a burning test cabinet and a sorting device, wherein:

[0022] The PCBA board feeding connection line transfers the PCBA board to be tested to the loading station;

[0023] The first pallet elevator lifts the (empty) pallet transferred from the second pallet elevator through the conveyor line from bottom to top, so that the (empty) pallet is transferred from the lower line body of the conveyor line body to the upper line body;

[0024] Place the PCBA boards on the (empty) trays on the upper line in sequence, so that the trays carrying the PCBA boards are transferred to the programming test cabinet along with the upper line, so as to perform programming and functional tests on the PCBA boards and transmit the functional test results of each PCBA board to the sorting device;

[0025] The upper line body transfers the tray with PCBA boards after the functional test to the sorting device, and the sorting device receives the functional test results of each PCBA board and sorts and distinguishes the qualified PCBA boards from the faulty PCBA boards, so that the qualified PCBA boards and the faulty PCBA boards are taken from the tray and placed in different areas;

[0026] The upper line body will transfer the sorted pallets to the second pallet elevator, and the second pallet elevator will take the pallets of the PCBA boards and lower them from top to bottom, so that the pallets are transferred from the upper line body of the conveyor line body to the lower line body, thereby realizing full automation of the FCT test of the PCBA boards.

[0027] As a further preferred technical solution of the above technical solution, the feeding detection device located at the PCBA single board feeding connection line forms a feeding signal after detecting each PCBA single board and transmits the feeding signal to the loading device located at the loading station, and the pallet detection device located at the first pallet elevator forms a pallet signal after detecting each pallet and transmits the pallet signal to the loading device, and the loading device matches the feeding signal and the pallet signal so that each PCBA single board is bound one by one to the pallet on the current upper line body, so that the loading device accurately places each PCBA single board on each (empty) pallet on the upper line body in turn.

[0028] As a further preferred technical solution of the above technical solution, the burning test cabinet determines whether there is a PCBA board on the tray before burning and functional testing the PCBA board (because when the feeding device judges the feeding signal and the tray signal, the number of trays on the assembly line will be more than the number of PCBA boards, so sometimes empty trays are directly transmitted to the burning test cabinet) to form an execution signal or a non-execution signal. The burning test cabinet is provided with a plurality of burning test units, each of which matches a PCBA board;

[0029] When the burning test unit receives the execution signal, the burning test unit fixes the PCBA board through the crimping device and the lifting device and performs burning and functional tests. During this process, the first tray elevator and the second tray elevator stop working so that the upper and lower layers of the conveying line body remain stationary, so that the burning test cabinet performs burning tests on the PCBA boards during this interval test time, and after the functional test results of each PCBA board are transmitted to the sorting device, the crimping device and the lifting device of each burning test unit release the current PCBA board, and after a preset delay time, the first tray elevator and the second tray elevator start working so that the upper and lower layers of the conveying line body continue to operate, so that the next batch of trays carrying PCBA boards enter the burning test cabinet for burning and functional tests;

[0030] When the burning and testing unit receives a non-execution signal, the crimping device and the lifting device of the burning and testing unit do not perform any action on the PCBA board.

[0031] As a further preferred technical solution of the above technical solution, within the total time of the interval test time plus the preset delay time, the loading device accurately places each PCBA single board on each (empty) tray on the upper line body in turn, and after the placement is completed, the loading device forms a placement completion signal. The loading device matches the placement time corresponding to each placement action from the beginning of placement to the formation of the placement completion signal with the total time to obtain the maximum placement completion signals formed within the total time, so that the loading device performs the corresponding placement action, and if the placement time cannot be reached within the last remaining time of the total time, the loading device does not perform the last placement action. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural schematic diagram of a PCBA single board automatic FCT testing device and a testing method thereof of the present invention.

[0033] Reference numerals include: DETAILED DESCRIPTION

[0034] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the present invention defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the present invention.

[0035] In the preferred embodiment of the present invention, those skilled in the art should note that the PCBA single board and tray involved in the present invention can be regarded as prior art.

[0036] Preferred embodiments.

[0037] The present invention discloses a PCBA single board automatic FCT testing method for a smart meter function test, comprising the following steps:

[0038] Step S1: The PCBA board feeding connection line transfers the PCBA board to be tested to the loading station;

[0039] Step S2: the first pallet elevator lifts the (empty) pallet transferred from the second pallet elevator through the conveyor line from bottom to top, so that the (empty) pallet is transferred from the lower line body of the conveyor line body to the upper line body;

[0040] Step S3: placing the PCBA boards on the (empty) trays on the upper line in sequence, so that the trays carrying the PCBA boards are transferred to the programming test cabinet along with the upper line, so as to perform programming and functional tests on the PCBA boards and transmit the functional test results of each PCBA board to the sorting device;

[0041] Step S4: the upper line body transfers the tray carrying the PCBA boards after the functional test to the sorting device, and the sorting device sorts and distinguishes the qualified PCBA boards and the faulty PCBA boards after receiving the functional test results of each PCBA board, so that the qualified PCBA boards and the faulty PCBA boards are taken from the tray and placed in different areas;

[0042] Step S5: The upper line body transfers the sorted pallets to the second pallet elevator, and the second pallet elevator takes the pallet of the PCBA board and lowers it from top to bottom, so that the pallet is transferred from the upper line body of the conveyor line body to the lower line body, and then steps S2-S5 are executed in sequence, so that the FCT test of the PCBA board is fully automated.

[0043] Specifically, in step S1-step S3, the feed detection device located at the PCBA single board feeding connection line generates a feed signal after detecting each PCBA single board and transmits the feed signal to the loading device located at the loading station, the pallet detection device located at the first pallet elevator generates a pallet signal after detecting each pallet and transmits the pallet signal to the loading device, the loading device matches the feed signal and the pallet signal so that each PCBA single board is bound one by one to the pallet on the current upper line body, so that the loading device accurately places each PCBA single board on each (empty) pallet on the upper line body in turn.

[0044] More specifically, step S4 is implemented as follows:

[0045] Step S4.1: The sorting device takes the qualified PCBA boards from the tray and puts them into the PCBA board discharging connection line for subsequent processing;

[0046] Step S4.2: The sorting device takes the faulty PCBA board off the tray and puts it into the bad buffer area for subsequent manual inspection.

[0047] Furthermore, in step S3, the burning test cabinet determines whether there is a PCBA board on the tray before burning and functional testing the PCBA board (because when the feeding device judges the feeding signal and the tray signal, the number of trays on the assembly line will be more than the number of PCBA boards, so sometimes empty trays are directly transmitted to the burning test cabinet) to form an execution signal or a non-execution signal. The burning test cabinet is provided with a plurality of burning test units, and each burning test unit matches a PCBA board;

[0048] When the burning test unit receives the execution signal, the burning test unit fixes the PCBA board through the crimping device and the lifting device and performs burning and functional tests. During this process, the first tray elevator and the second tray elevator stop working so that the upper and lower layers of the conveying line body remain stationary, so that the burning test cabinet performs burning tests on the PCBA boards during this interval test time, and after the functional test results of each PCBA board are transmitted to the sorting device, the crimping device and the lifting device of each burning test unit release the current PCBA board, and after a preset delay time, the first tray elevator and the second tray elevator start working so that the upper and lower layers of the conveying line body continue to operate, so that the next batch of trays carrying PCBA boards enter the burning test cabinet for burning and functional tests;

[0049] When the burning and testing unit receives a non-execution signal, the crimping device and the lifting device of the burning and testing unit do not perform any action on the PCBA board.

[0050] Furthermore, within the total time of the interval test time plus the preset delay time, the loading device accurately places each PCBA board on each (empty) tray on the upper line body in turn, and after the placement is completed, the loading device forms a placement completion signal. The loading device matches the placement time corresponding to each placement action from the start of placement to the formation of the placement completion signal with the total time to obtain the maximum number of placement completion signals formed within the total time, so that the loading device performs the corresponding placement action, and if the placement time cannot be reached within the last remaining time of the total time, the loading device does not perform the last placement action.

[0051] Preferably, a first pallet elevator, a conveyor line body and a loading device are provided on both sides of the PCBA single board feeding connection line, and a second pallet elevator, a conveyor line body and a sorting device are provided on both sides of the PCBA single board discharging connection line (two sets of devices are provided to improve the testing efficiency).

[0052] Preferably, the burning test cabinet of the present invention is also provided with a single-three-phase switching unit to perform different tests on different PCBA boards.

[0053] The present invention also discloses a PCBA single board automatic FCT testing device, comprising a loading station, a first tray elevator, a second tray elevator, a conveyor line body, a burning test cabinet and a sorting device, wherein:

[0054] The PCBA board feeding connection line transfers the PCBA board to be tested to the loading station;

[0055] The first pallet elevator lifts the (empty) pallet transferred from the second pallet elevator through the conveyor line from bottom to top, so that the (empty) pallet is transferred from the lower line body of the conveyor line body to the upper line body;

[0056] Place the PCBA boards on the (empty) trays on the upper line in sequence, so that the trays carrying the PCBA boards are transferred to the programming test cabinet along with the upper line, so as to perform programming and functional tests on the PCBA boards and transmit the functional test results of each PCBA board to the sorting device;

[0057] The upper line body transfers the tray with PCBA boards after the functional test to the sorting device, and the sorting device receives the functional test results of each PCBA board and sorts and distinguishes the qualified PCBA boards from the faulty PCBA boards, so that the qualified PCBA boards and the faulty PCBA boards are taken from the tray and placed in different areas;

[0058] The upper line body will transfer the sorted pallets to the second pallet elevator, and the second pallet elevator will take the pallets of the PCBA boards and lower them from top to bottom, so that the pallets are transferred from the upper line body of the conveyor line body to the lower line body, thereby realizing full automation of the FCT test of the PCBA boards.

[0059] Specifically, the feeding detection device located at the PCBA single board feeding connection line generates a feeding signal after detecting each PCBA single board and transmits the feeding signal to the loading device located at the loading station; the pallet detection device located at the first pallet elevator generates a pallet signal after detecting each pallet and transmits the pallet signal to the loading device; the loading device matches the feeding signal and the pallet signal so that each PCBA single board is bound one by one to the pallet on the current upper line body, so that the loading device accurately places each PCBA single board on each (empty) pallet on the upper line body in turn.

[0060] More specifically, the burn test cabinet determines whether there is a PCBA board on the tray before burning and functional testing the PCBA board (because when the feeding device judges the feeding signal and the tray signal, the number of trays on the assembly line will be more than the number of PCBA boards, so sometimes empty trays are directly transmitted to the burn test cabinet) to form an execution signal or a non-execution signal. The burn test cabinet is equipped with several burn test units, each of which matches a PCBA board;

[0061] When the burning test unit receives the execution signal, the burning test unit fixes the PCBA board through the crimping device and the lifting device and performs burning and functional tests. During this process, the first tray elevator and the second tray elevator stop working so that the upper and lower layers of the conveying line body remain stationary, so that the burning test cabinet performs burning tests on the PCBA boards during this interval test time, and after the functional test results of each PCBA board are transmitted to the sorting device, the crimping device and the lifting device of each burning test unit release the current PCBA board, and after a preset delay time, the first tray elevator and the second tray elevator start working so that the upper and lower layers of the conveying line body continue to operate, so that the next batch of trays carrying PCBA boards enter the burning test cabinet for burning and functional tests;

[0062] When the burning and testing unit receives a non-execution signal, the crimping device and the lifting device of the burning and testing unit do not perform any action on the PCBA board.

[0063] Furthermore, within the total time of the interval test time plus the preset delay time, the loading device accurately places each PCBA board on each (empty) tray on the upper line body in turn, and the loading device forms a placement completion signal after the placement is completed. The loading device matches the placement time corresponding to each placement action from the start of placement to the formation of the placement completion signal with the total time to obtain the maximum number of placement completion signals formed within the total time, so that the loading device performs the corresponding placement action, and if the placement time cannot be reached within the last remaining time of the total time, the loading device does not perform the last placement action.

[0064] Preferably, the burning test cabinet of the present invention is also provided with a single-three-phase switching unit to perform different tests on different PCBA boards.

[0065] It is worth mentioning that the technical features such as PCBA boards and trays involved in the patent application of this invention should be regarded as prior art. The specific structure, working principle and possible control method and spatial layout method of these technical features can be selected according to the conventional methods in the field, and should not be regarded as the inventive point of the patent of this invention. The patent of this invention will not be further elaborated.

[0066] For those skilled in the art, it is still possible to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A PCBA single board automatic FCT test method for functional testing of smart meters, characterized in that: The following steps are involved: Step S1: The PCBA board feeding connection line transfers the PCBA board to be tested to the loading station; Step S2: the first pallet elevator lifts the pallet transferred from the second pallet elevator through the conveyor line from bottom to top, so that the pallet is transferred from the lower layer of the conveyor line to the upper layer of the conveyor line; Step S3: placing the PCBA boards on the trays on the upper line in sequence, so that the trays carrying the PCBA boards are transferred to the programming test cabinet along with the upper line, so as to perform programming and functional testing on the PCBA boards and transmit the functional test results of each PCBA board to the sorting device; Step S4: the upper line body transfers the tray carrying the PCBA boards after the functional test to the sorting device, and the sorting device sorts and distinguishes the qualified PCBA boards and the faulty PCBA boards after receiving the functional test results of each PCBA board, so that the qualified PCBA boards and the faulty PCBA boards are taken from the tray and placed in different areas; Step S5: The upper line body transfers the sorted pallets to the second pallet elevator, and the second pallet elevator takes the pallet of the PCBA board and lowers it from top to bottom, so that the pallet is transferred from the upper line body of the conveyor line body to the lower line body, and then steps S2 to S5 are performed in sequence, so that the FCT test of the PCBA board is fully automated; In step S1 to step S3, the feeding detection device located at the PCBA board feeding connection line generates a feeding signal after detecting each PCBA board and transmits the feeding signal to the loading device located at the loading station, and the pallet detection device located at the first pallet elevator generates a pallet signal after detecting each pallet and transmits the pallet signal to the loading device, and the loading device matches the feeding signal and the pallet signal, so that each PCBA board is bound to the pallet on the current upper layer line one by one, so that the loading device places each PCBA board accurately on each pallet on the upper layer line in sequence; Step S4 is specifically implemented as the following steps: Step S4.1: The sorting device takes the qualified PCBA boards from the tray and puts them into the PCBA board discharging connection line for subsequent processing; Step S4.2: The sorting device takes the faulty PCBA board off the tray and puts it into the bad buffer area for subsequent manual inspection; In step S3, the burning test cabinet determines whether there is a PCBA board on the tray before burning and functional testing the PCBA board to form an execution signal or a non-execution signal. The burning test cabinet is provided with a plurality of burning test units, each of which matches a PCBA board; When the burning test unit receives the execution signal, the burning test unit fixes the PCBA board through the crimping device and the lifting device and performs burning and functional tests. During this process, the first tray elevator and the second tray elevator stop working so that the upper and lower layers of the conveying line body remain stationary, so that the burning test cabinet performs burning tests on the PCBA boards during this interval test time, and after the functional test results of each PCBA board are transmitted to the sorting device, the crimping device and the lifting device of each burning test unit release the current PCBA board, and after a preset delay time, the first tray elevator and the second tray elevator start working so that the upper and lower layers of the conveying line body continue to operate, so that the next batch of trays carrying PCBA boards enter the burning test cabinet for burning and functional tests; When the burning test unit receives a non-execution signal, the crimping device and the lifting device of the burning test unit do not perform an action on the PCBA board; Within the total time of the interval test time plus the preset delay time, the loading device accurately places each PCBA board on each tray on the upper line body in turn, and forms a placement completion signal after the placement is completed. The loading device matches the placement time corresponding to each placement action from the start of placement to the formation of the placement completion signal with the total time to obtain the maximum number of placement completion signals formed within the total time, so that the loading device performs the corresponding placement action. If the placement time cannot be reached within the last remaining time of the total time, the loading device does not perform the last placement action.

2. A PCBA single board automatic FCT testing method according to claim 1, characterized in that: Both sides of the PCBA single board feeding connection line are equipped with a first pallet elevator, a conveyor line body and a loading device, and both sides of the PCBA single board discharging connection line are equipped with a second pallet elevator, a conveyor line body and a sorting device.

3. A PCBA single board automatic FCT test device, characterized in that: A PCBA single board automatic FCT test method for implementing any one of claims 1-2, comprising a loading station, a first tray elevator, a second tray elevator, a conveyor line, a burning test cabinet and a sorting device, wherein: The PCBA board feeding connection line transfers the PCBA board to be tested to the loading station; The first pallet elevator lifts the pallet transmitted from the second pallet elevator through the conveyor line from bottom to top, so that the pallet is transmitted from the lower line body of the conveyor line body to the upper line body; Place the PCBA boards on the trays on the upper line in sequence, so that the trays carrying the PCBA boards are transferred to the programming test cabinet along with the upper line, so as to perform programming and functional tests on the PCBA boards and transmit the functional test results of each PCBA board to the sorting device; The upper line body transfers the tray with PCBA boards after the functional test to the sorting device, and the sorting device receives the functional test results of each PCBA board and sorts and distinguishes the qualified PCBA boards from the faulty PCBA boards, so that the qualified PCBA boards and the faulty PCBA boards are taken from the tray and placed in different areas; The upper line body will transfer the sorted pallets to the second pallet elevator, and the second pallet elevator will take the pallets of the PCBA boards and lower them from top to bottom, so that the pallets are transferred from the upper line body of the conveyor line body to the lower line body, thereby realizing full automation of the FCT test of the PCBA boards.

4. A PCBA single board automatic FCT testing device according to claim 3, characterized in that: The feeding detection device located at the PCBA single board feeding connection line generates a feeding signal after detecting each PCBA single board and transmits the feeding signal to the loading device located at the loading station; the pallet detection device located at the first pallet elevator generates a pallet signal after detecting each pallet and transmits the pallet signal to the loading device; the loading device matches the feeding signal and the pallet signal so that each PCBA single board is bound one by one to the pallet on the current upper layer line body, so that the loading device places each PCBA single board accurately on each pallet on the upper layer line body in turn.

5. A PCBA single board automatic FCT testing device according to claim 4, characterized in that: Before burning and functional testing the PCBA board, the burning test cabinet determines whether there is a PCBA board on the tray to form an execution signal or a non-execution signal. The burning test cabinet is equipped with several burning test units, each of which matches a PCBA board. When the burning test unit receives the execution signal, the burning test unit fixes the PCBA board through the crimping device and the lifting device and performs burning and functional tests. During this process, the first tray elevator and the second tray elevator stop working so that the upper and lower layers of the conveying line body remain stationary, so that the burning test cabinet performs burning tests on the PCBA boards during this interval test time, and after the functional test results of each PCBA board are transmitted to the sorting device, the crimping device and the lifting device of each burning test unit release the current PCBA board, and after a preset delay time, the first tray elevator and the second tray elevator start working so that the upper and lower layers of the conveying line body continue to operate, so that the next batch of trays carrying PCBA boards enter the burning test cabinet for burning and functional tests; When the burning and testing unit receives a non-execution signal, the crimping device and the lifting device of the burning and testing unit do not perform any action on the PCBA board.

6. A PCBA single board automatic FCT testing device according to claim 5, characterized in that: Within the total time of the interval test time plus the preset delay time, the loading device accurately places each PCBA board on each tray on the upper line body in turn, and forms a placement completion signal after the placement is completed. The loading device matches the placement time corresponding to each placement action from the start of placement to the formation of the placement completion signal with the total time to obtain the maximum number of placement completion signals formed within the total time, so that the loading device performs the corresponding placement action. If the placement time cannot be reached within the last remaining time of the total time, the loading device does not perform the last placement action.

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