PCB board safe position detection device and online FCT testing device
By introducing limiters and position sensors into the FCT testing device, the problem of PCB board position misjudgment is solved, and more efficient and safer PCB board testing is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 青岛鼎新电子科技有限公司
- Filing Date
- 2025-08-06
- Publication Date
- 2026-07-14
AI Technical Summary
Existing PCB board position determination devices cannot accurately determine whether the PCB board has reached the appropriate position during the online automatic testing of FCT, resulting in an increased defect rate and even damage to the circuit board and FCT testing equipment.
A PCB board safety position detection device is adopted, including a base, guide, limiter, sensor support and position sensor. The limiter is raised synchronously with the PCB board, and the position sensor is used to detect the safe position of the PCB board to avoid false judgment.
It improves the accuracy of PCB board position detection and the safety of testing, reduces the defect rate, and enhances testing efficiency and equipment safety.
Smart Images
Figure CN224499398U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of auxiliary testing technology for circuit board production. Specifically, it relates to a PCB board safety position detection device and an online FCT testing device. Background Technology
[0002] Due to the unique structure of PCBs, some PCBs deform during production, causing existing position determination devices to be unable to accurately determine whether they have reached the appropriate position during the online automated FCT testing process, leading to an increased defect rate. Specifically, PCBs may be blocked by stops at specific positions when they flow to the FCT testing station on the production line. If the deformation of the PCB is small, the deviation in its position is minimal, and existing position determination devices may misjudge it as a defective product. However, for PCBs with large deformation, the position deviation is significant, which may damage the PCB due to misjudgment, affecting its lifespan or even causing it to break down. In addition, PCBs with large position deviations may damage the FCT testing equipment, causing production accidents such as downtime.
[0003] The information disclosed in this background section is only intended to enhance the understanding of the background technology of this application, and therefore may include prior art that is not known to those skilled in the art. Summary of the Invention
[0004] This invention addresses the problems in existing technologies where misjudgment of PCB board position increases defect rates, damages PCB boards and FCT testing equipment. It proposes a PCB board safe position detection device and an online FCT testing device to improve the accuracy of PCB board position detection, thereby improving the safety and efficiency of PCB board testing and increasing the yield rate.
[0005] To achieve the above-mentioned utility model / design objectives, the present utility model adopts the following technical solution:
[0006] A PCB board safety position detection device for use in an online FCT test machine includes a base, at least one guide, a limiting member, a sensor support, and a position sensor.
[0007] The base is fixedly connected to the production line conveyor track frame and is set corresponding to the online FCT testing machine; the production line conveyor track frame is located on both sides of the conveyor belt and provides power to the conveyor belt; the conveyor belt is used to transport the PCB board; the online FCT testing machine is used to lift the PCB board and test it.
[0008] The guide component is a column, which is vertically arranged relative to the production line conveyor track frame, and one end is fixedly connected to the base;
[0009] The limiting member has a first through hole that is slidably adapted to the guide member, and is horizontally mounted on the guide member relative to the production line conveyor track frame, with one end located above the conveyor belt;
[0010] The sensor support is located on the side of the guide member away from the conveyor belt and is fixedly connected to the base;
[0011] The position sensor is fixedly mounted on the sensor support; when the PCB board is raised to a predetermined position, one end of the limiting member is connected to the PCB board, and the limiting member is raised; the other end of the limiting member corresponds to the position sensor and outputs a sensing signal.
[0012] In some specific embodiments, at least one linear bearing is also included;
[0013] The first through hole is adapted to the linear bearing; the limiting member is slidably installed with the guide member through the linear bearing.
[0014] In some specific embodiments, it also includes:
[0015] The connector is a plate structure; there are two guide members; the connector is fixedly connected to the other end of the guide member, and one side faces the production line conveyor rail frame;
[0016] At least one elastic element is located between or on the outside of the two guide elements, with its two ends connected to the limiting element and the connecting element, respectively, and is in a compressed state.
[0017] In some specific embodiments, at least one limiting pin is also included, which is vertically arranged relative to the production line conveyor track frame and has one end fixedly connected to the base;
[0018] The limiting member has a second through hole that is adapted to slide and install with the limiting pin, and is fitted onto the limiting pin;
[0019] The elastic element is a cylindrical helical spring, which is located between the limiting element and the connecting element. One end is fitted onto the limiting pin, and the other end is connected to the connecting element.
[0020] In some specific embodiments, the sensor support is formed with a first through-hole groove that allows the other end of the limiting member to move vertically; the other end of the limiting member is installed in the first through-hole groove.
[0021] In some specific embodiments, the position sensor is a photoelectric sensor, including a transmitter and a corresponding receiver, which are longitudinally distributed relative to the production line conveyor rail frame.
[0022] The other end of the limiting member has an end extending to one side in its lateral direction; when the PCB board is raised to a predetermined position, the end of the other end of the limiting member is located between the transmitting end and the receiving end, blocking the receiving end from receiving the light signal emitted by the transmitting end.
[0023] In some specific embodiments, the sensor support has a second through-hole groove;
[0024] The position sensor is fixedly connected to the second through-hole groove by bolts.
[0025] In some specific embodiments, the sensor support is formed with a fixed foot that extends outward toward one or both sides of the sensor support, has a bottom surface adapted to the base, and forms a plurality of vertical third through holes relative to the production line conveyor track frame.
[0026] A screw hole is formed at a corresponding position on the base; the bolt passes through the third through hole and is threaded into the screw hole;
[0027] The first through-hole groove is located at one end of the fixing foot.
[0028] In some specific embodiments, one end of the limiting member is formed with a downwardly protruding support arm, which has a lateral length relative to the production line conveyor track frame and extends along the edge of the conveyor belt.
[0029] An online FCT testing device includes a pair of the above-mentioned PCB board safety position detection devices and an online FCT testing machine.
[0030] The paired PCB board safety position detection devices are respectively installed on both sides of the conveyor belt;
[0031] The online FCT testing machine includes a lifting module and a testing module; the lifting module is located below the conveyor belt and can lift the PCB board above the conveyor belt to the testing position; the testing module is used to test the PCB board at the testing position.
[0032] Compared with the prior art, the advantages and positive effects of this utility model are:
[0033] The PCB board safety position detection device and online FCT testing device of this utility model detect the safety position of the PCB board through the transmission of the limiting component. It can detect the safety position of the PCB board for FCT testing without setting up multiple position sensors, thereby improving the efficiency and safety of online testing of PCB boards and increasing the yield of PCB boards.
[0034] Other features and advantages of this utility model will become clearer after reading the specific embodiments of this utility model in conjunction with the accompanying drawings. Attached Figure Description
[0035] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0036] Figure 1 This is a structural schematic diagram of the PCB board safe position detection device from one angle according to an embodiment;
[0037] Figure 2 This is a structural schematic diagram of the PCB board safe position detection device from one angle according to an embodiment;
[0038] Figure 3 This is a structural schematic diagram of the PCB board safe position detection device according to an embodiment from another angle;
[0039] Figure 4 This is a schematic diagram of the PCB board safety position detection device according to an embodiment of the present invention when the PCB board is not lifted to the preset position;
[0040] Figure 5 This is a schematic diagram of the PCB board safety position detection device when the PCB board is lifted to a preset position according to an embodiment.
[0041] Figure 6 This is a structural schematic diagram of the limiting member according to an embodiment;
[0042] Figure 7 This is a schematic diagram of the sensor support according to an embodiment.
[0043] In the picture,
[0044] 1. Base; 2. Limiting component; 21. First through hole; 22. Second through hole; 23. Sensing unit; 24. Support arm; 3. Guide component; 4. Connecting component; 5. Elastic component; 6. Limiting pin; 7. Sensor support; 71. First through hole groove; 72. Second through hole groove; 73. Fixing foot; 74. Third through hole; 8. Linear bearing; 9. Position sensor; 91. Transmitter; 92. Receiver; 10. PCB board; 20. Production line conveyor track frame. Detailed Implementation
[0045] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0046] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0047] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. In the description of the embodiments, specific features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.
[0048] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
[0049] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0050] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 This utility model discloses a PCB board safety position detection device, which is used in an online FCT testing machine. The online FCT testing machine is used on the PCB board production line to test the PCB board 10 and determine whether it is a good or defective product based on the test results. The FCT test is used to test the function of the PCB board 10.
[0051] The online FCT test machine uses a lifting module located below the conveyor belt to lift the PCB board 10 on the conveyor belt to a predetermined position, and then performs power supply and functional tests on the PCB board 10 through terminal plugging or probe crimping; after the test is completed, the lifting module descends and the PCB board 10 moves to the next position.
[0052] The PCB board safety position detection device includes a base 1, which is located on the upper side of the production line conveyor track frame 20 and is fixedly connected to the production line conveyor track frame 20, corresponding to the online FCT test machine. The production line conveyor track frame 20 is located on both sides of the conveyor belt and provides power to the conveyor belt. The conveyor belt is used to transport the PCB board 10. The online FCT test machine is used to lift the PCB board 10 and test it.
[0053] The PCB board safety position detection device also includes at least one guide 3, which is a column, vertically arranged relative to the production line conveyor track frame 20, located above the base 1, and one end is fixedly connected to the base 1.
[0054] The PCB board safety position detection device also includes a limiting member 2, which has at least one first through hole 21 that is adapted to slide and install with the guide member 3, and is horizontally installed on the guide member 3 relative to the production line conveyor track frame 20, with one end located above the conveyor belt; the guide member 3 is used to guide the up and down movement of the limiting member 2; one end of the limiting member 2 is used to be lifted as the PCB board 10 is lifted, causing the limiting member 2 to rise.
[0055] The PCB board safety position detection device also includes a sensor support 7, which is located on the side of the guide 3 away from the conveyor belt and is fixedly connected to the base 1; that is, the two ends of the limiting member 2 are located on both sides of the guide 3, one end is used to be driven to lift by 10, and the other end is used to sense the position sensor 9.
[0056] The PCB board safety position detection device also includes a position sensor 9, which is fixedly installed on the sensor support 7. When the PCB board 10 is lifted to the predetermined position, one end of the limiting member 2 is connected to the PCB board 10, and the limiting member 2 is lifted. The other end of the limiting member 2 corresponds to the position sensor 9 and outputs a sensing signal.
[0057] This utility model also discloses an online FCT testing device, which includes a pair of PCB board safety position detection devices; the two PCB board safety position detection devices are respectively arranged on both sides of the conveyor belt.
[0058] The online FCT testing device also includes an online FCT testing machine, which includes a lifting module and a testing module; the lifting module is located below the conveyor belt and can lift the PCB board 10 on the conveyor belt to the testing position; the testing module is used to test the PCB board 10 at the testing position.
[0059] The PCB board safety position detection device and online FCT testing device of this utility model for online FCT testing machine detect the position of PCB board 10 through the transmission of the limiting member 2. It can detect the FCT test safety position of PCB board 10 without setting multiple position sensors 9, thereby improving the online testing efficiency and safety of PCB board 10 and increasing the yield of PCB board 10.
[0060] The specific structure and principle of the PCB board safety position detection device of this utility model will be described in detail below through specific embodiments.
[0061] In some specific embodiments, refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 The PCB board safety position detection device also includes at least one linear bearing 8; the first through hole 21 is adapted to the linear bearing 8; the limiting member 2 is slidably installed with the guide member 3 through the linear bearing 8.
[0062] Examples of online FCT testing devices include the PCB board safe position detection device described above.
[0063] The PCB board safety position detection device and online FCT testing device of this embodiment use a limiting member 2 that is slidably installed with a linear bearing 8 and a guide member 3 to ensure that the lifting limiting member 2 is stable and balanced when the PCB board 10 is lifted. This makes the position detection achieved by the sensing of the limiting member 2 and the position sensor 9 more stable and accurate, thereby improving the efficiency and safety of the PCB board 10 testing.
[0064] In some specific embodiments, refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 7 The PCB board safety position detection device also includes a connector 4 and at least one elastic element 5.
[0065] The connector 4 is a plate structure; there are two guides 3, and the guides 3 are cylindrical; the connector 4 is fixedly connected to the other end of the guide 3, and one side of the connector faces the production line conveyor rail frame 20; that is, the connector 4 is placed horizontally above the guide 3 and fixedly connected to the other end of the guide 3.
[0066] The elastic element 5 is located between the two guide elements 3 or on the outside of the two guide elements 3 respectively, and its two ends are connected to the limiting element 2 and the connecting element 4 respectively, and it is in a compressed state. That is, when there is only one elastic element 5, it is located between the two guide elements 3 and between the limiting element 2 and the connecting element 4, and its two ends are connected to the limiting element 2 and the connecting element 4 respectively, and it is in a compressed elastic deformation state.
[0067] Examples of online FCT testing devices include the PCB board safe position detection device described above.
[0068] The PCB board safe position detection device and online FCT testing device of this embodiment, by setting an elastic element 5 between the connector 4 and the limiting element 2, so that the limiting element 2 is under pressure from above, prevents the limiting element 2 from bouncing when the PCB board 10 is lifted, improves the stability and accuracy of the PCB board safe position detection device and online FCT testing device in detecting the position of the PCB board 10, and thus improves the testing efficiency of the online FCT testing device for the PCB board 10.
[0069] In some specific embodiments, refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 The PCB board safety position detection device also includes at least one limit pin 6, which is vertically arranged relative to the production line conveyor rail frame 20, with one end fixedly connected to the base 1 and the other end being a free end.
[0070] The limiting member 2 has a second through hole 22 that is adapted to slide and install with the limiting pin 6, and is fitted onto the limiting pin 6.
[0071] The elastic element 5 is a cylindrical helical spring, which is located between the limiting element 2 and the connecting element 4. One end is fitted onto the limiting pin 6, and the other end is connected to the connecting element 4.
[0072] Examples of online FCT testing devices include the PCB board safe position detection device described above.
[0073] In this embodiment, the elastic element 5 of the PCB board safety position detection device and the online FCT testing device adopts a cylindrical helical spring and is fitted onto the limiting pin 6 to improve the stability of the elastic element 5, thereby improving the stability of the limiting element 2, improving the stability and accuracy of the PCB board 10 position detection by the PCB board safety position detection device and the online FCT testing device, and thus improving the testing efficiency of the online FCT testing device for the PCB board 10.
[0074] In some specific embodiments, refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 The PCB board safety position detection device also includes at least one limit pin 6, which is vertically arranged relative to the production line conveyor rail frame 20, with one end fixedly connected to the base 1 and the other end fixedly connected to the connector 4.
[0075] The limiting member 2 has a second through hole 22 that is adapted to slide and fit the limiting pin 6, and is fitted onto the limiting pin 6; the elastic member 5 is a cylindrical helical spring, which is fitted onto the limiting pin 6.
[0076] Examples of online FCT testing devices include the PCB board safe position detection device described above.
[0077] In this embodiment, the elastic element 5 of the PCB board safety position detection device and the online FCT testing device adopts a cylindrical helical spring and is fitted onto the limiting pin 6 to improve the stability of the elastic element 5, thereby improving the stability of the limiting element 2, improving the stability and accuracy of the PCB board 10 position detection by the PCB board safety position detection device and the online FCT testing device, and thus improving the testing efficiency of the online FCT testing device for the PCB board 10.
[0078] In some specific embodiments, refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 7 The sensor support 7 has a vertical first through-hole groove 71 that allows the other end of the limiting member 2 to move vertically; the other end of the limiting member 2 is installed in the first through-hole groove 71.
[0079] Examples of online FCT testing devices include the PCB board safe position detection device described above.
[0080] In some specific embodiments, refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 The position sensor 9 is a photoelectric sensor, including a transmitter 91 and a corresponding receiver 92, which are longitudinally distributed relative to the production line conveyor track frame 20.
[0081] The other end of the limiting member 2 has an end extending to one side in the lateral direction, which is the sensing part 23. When the PCB board 10 is lifted to the predetermined position, the sensing part 23 located at the other end of the limiting member 2 is located between the transmitting end 91 and the receiving end 92, blocking the receiving end 92 from receiving the light signal emitted by the transmitting end 91, so that the position sensor 9 emits different sensing signals to indicate that the PCB board 10 is in a safe and correct predetermined position.
[0082] Of course, when the PCB board 10 is not in the predetermined position, the receiver 92 of the position sensor 9 will receive the light signal emitted by the transmitter 91 and output another sensing signal to indicate that the PCB board 10 is not in the safe and correct predetermined position.
[0083] Examples of online FCT testing devices include the PCB board safe position detection device described above.
[0084] In this embodiment, the PCB board safety position detection device and online FCT testing device use a photoelectric sensor as the position sensor 9 to improve the accuracy and precision of position detection.
[0085] In some specific embodiments, refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 The sensor support 7 has a second through-hole groove 72; the position sensor 9 is fixedly connected to the second through-hole groove 72 by bolts.
[0086] Examples of online FCT testing devices include the PCB board safe position detection device described above.
[0087] The PCB board safety position detection device and online FCT testing device in this embodiment are fixedly connected by bolts to the position sensor 9 and the second through hole slot 72, which facilitates the adjustment of the position sensor 9 and makes debugging easier.
[0088] In some specific embodiments, refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 The sensor support 7 has a fixed foot 73 that extends to one or both sides of the sensor support 7, has a bottom surface that adapts to the base 1, and has a plurality of vertical third through holes 74 relative to the production line conveyor rail frame 20.
[0089] A screw hole is formed at the corresponding position of the base 1; the bolt passes through the third through hole 74 and is threaded into the screw hole; the first through hole groove 71 is located at one end of the fixing foot 73.
[0090] Examples of online FCT testing devices include the PCB board safe position detection device described above.
[0091] The PCB board safety position detection device and online FCT testing device of this embodiment facilitate the installation of the sensing part 23 at the other end of the limiting member 2 in the first through hole groove 71 through the opening of the first through hole groove 71, thereby improving assembly efficiency and accuracy and reducing costs.
[0092] In some specific embodiments, refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 One end of the limiting member 2 has a downwardly protruding support arm 24, which has a length in the lateral direction relative to the production line conveyor track frame 20 and extends along the edge of the conveyor belt.
[0093] Examples of online FCT testing devices include the PCB board safe position detection device described above.
[0094] The PCB board safety position detection device and online FCT testing device of this embodiment increase the contact length between the limiting member 2 and the PCB board 10, so that the PCB board 10 can bear a certain length of pressure, reduce the deformation of the PCB board 10, and improve the accuracy of safety position detection and the stability and accuracy of the test.
[0095] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions claimed by this utility model.
Claims
1. A PCB board safety position detection device, used in an online FCT testing machine, characterized in that, include: The base is fixedly connected to the production line conveyor track frame and is set up corresponding to the online FCT testing machine; the production line conveyor track frame is located on both sides of the conveyor belt and provides power to the conveyor belt; the conveyor belt is used to transport the PCB board; the online FCT testing machine is used to lift the PCB board and test it. At least one guide member, which is a column, is vertically arranged relative to the production line conveyor track frame, and one end is fixedly connected to the base; A limiting member has a first through hole that is slidably adapted to the guide member, and is horizontally mounted on the guide member relative to the production line conveyor track frame, with one end located above the conveyor belt; A sensor support is located on the side of the guide away from the conveyor belt and is fixedly connected to the base; A position sensor, which is fixedly mounted on the sensor support; When the PCB board is raised to a predetermined position, one end of the limiting member is connected to the PCB board, and the limiting member is raised; the other end of the limiting member corresponds to the position sensor and outputs a sensing signal.
2. The PCB board safety position detection device according to claim 1, characterized in that, It also includes at least one linear bearing; The first through hole is adapted to the linear bearing; the limiting member is slidably installed with the guide member through the linear bearing.
3. The PCB board safety position detection device according to claim 1, characterized in that, Also includes: The connector is a plate structure; there are two guide members; the connector is fixedly connected to the other end of the guide member, and one side faces the production line conveyor rail frame; At least one elastic element is located between or on the outside of the two guide elements, with its two ends connected to the limiting element and the connecting element, respectively, and is in a compressed state.
4. The PCB board safe position detection device according to claim 3, characterized in that, It also includes at least one limiting pin, which is vertically arranged relative to the production line conveyor track frame, and one end is fixedly connected to the base; The limiting member has a second through hole that is adapted to slide and install with the limiting pin, and is fitted onto the limiting pin; The elastic element is a cylindrical helical spring, which is located between the limiting element and the connecting element. One end is fitted onto the limiting pin, and the other end is connected to the connecting element.
5. The PCB board safety position detection device according to claim 1, characterized in that, The sensor support has a vertical first through-hole groove that allows the other end of the limiting member to move vertically; the other end of the limiting member is installed in the first through-hole groove.
6. The PCB board safety position detection device according to claim 5, characterized in that, The position sensor is a photoelectric sensor, including a transmitter and a corresponding receiver, which are longitudinally distributed relative to the production line conveyor rail frame. The other end of the limiting member has an end extending to one side in its lateral direction; when the PCB board is raised to a predetermined position, the end of the other end of the limiting member is located between the transmitting end and the receiving end, blocking the receiving end from receiving the light signal emitted by the transmitting end.
7. The PCB board safety position detection device according to claim 6, characterized in that, The sensor support has a second through-hole groove; The position sensor is fixedly connected to the second through-hole groove by bolts.
8. The PCB board safety position detection device according to claim 5, characterized in that, The sensor support has fixed feet that extend outwards to one or both sides of the sensor support, have a bottom surface adapted to the base, and have multiple vertical third through holes relative to the production line conveyor track frame. A screw hole is formed at a corresponding position on the base; the bolt passes through the third through hole and is threaded into the screw hole; The first through-hole groove is located at one end of the fixing foot.
9. The PCB board safety position detection device according to any one of claims 1 to 8, characterized in that, One end of the limiting member has a downwardly protruding support arm, which has a lateral length relative to the production line conveyor track frame and extends along the edge of the conveyor belt.
10. An online FCT testing device, characterized in that, include: The PCB board safety position detection device according to any one of claims 1 to 9 is respectively arranged on both sides of the conveyor belt; An online FCT testing machine includes a lifting module and a testing module; the lifting module is located below the conveyor belt and can lift the PCB board above the conveyor belt to the testing position; the testing module is used to test the PCB board at the testing position.