Power supply test lockout device

Abstract

The present application belongs to the technical field of power supply testing, and particularly relates to a power supply testing locking device, which comprises a rack, a testing fixture for testing a switching power supply, a conveying device installed on the rack and used for conveying the testing fixture, an automatic terminal loosening device used for loosening screws on terminals of the switching power supply on the testing fixture, a driving device used for contacting the terminals of the switching power supply with testing positions of the testing fixture, and an automatic terminal locking device used for locking the screws on the terminals of the switching power supply on the testing fixture; the automatic terminal loosening device and the automatic terminal locking device are sequentially arranged on a conveying path of the conveying device, the automatic terminal loosening device is provided with a screw loosening station, and the automatic terminal locking device is provided with a screw locking station. The screw loosening and the screw locking of the switching power supply are both realized without manual operation, and the intelligentization and automation are achieved, so that the testing efficiency is effectively improved.

Description

Technical Field

[0001] This invention belongs to the field of power supply testing technology, and in particular relates to a power supply testing locking device. Background Technology

[0002] A switch-mode power supply (SMPS), also known as a switching power supply or switching converter, is a high-frequency power conversion device and a type of power supply. Its function is to convert a voltage at a certain level into the voltage or current required by the user through different structural forms. The input of a switching power supply is mostly AC power (such as mains power) or DC power, while the output is mostly devices that require DC power, such as personal computers. The switching power supply performs the voltage and current conversion between these two sources.

[0003] With the rapid development of electrical equipment, the use of switching power supplies is becoming increasingly widespread. However, the proper adjustment of switching power supply parameters directly affects its lifespan and stability. Currently, testing of switching power supplies is primarily done manually by employees. This involves placing the power supply on a test fixture, loosening the screws on the power supply, inserting the test terminals of the test fixture into the corresponding contacts, and then tightening the screws. This process is labor-intensive, costly, and inefficient. Summary of the Invention

[0004] The purpose of this invention is to provide a power supply testing and locking device, which aims to solve the technical problems of high labor costs, lack of automation, and low efficiency in the testing of switching power supplies in the prior art.

[0005] To achieve the above objectives, an embodiment of the present invention provides a power supply testing and locking device, including a frame, a test fixture for testing a switching power supply, a conveying device mounted on the frame for conveying the test fixture, an automatic terminal loosening device for loosening screws on the terminals of the switching power supply on the test fixture, a driving device for contacting the terminals of the switching power supply with the test position of the test fixture, and an automatic terminal locking device for locking screws on the terminals of the switching power supply on the test fixture; the automatic terminal loosening device and the automatic terminal locking device are sequentially arranged in the conveying path of the conveying device, the automatic terminal loosening device having a screw loosening station, and the automatic terminal locking device having a screw locking station.

[0006] Optionally, both the automatic terminal locking device and the automatic terminal loosening device include an electric screwdriver mechanism for loosening or locking terminal screws on the switching power supply, a lifting mechanism for driving the electric screwdriver mechanism to move up and down, a lateral displacement mechanism for driving the lifting mechanism to move laterally along the conveying direction of the conveying device, and a longitudinal displacement mechanism disposed on the frame for driving the lateral displacement mechanism to move along the direction perpendicular to the conveying device.

[0007] Optionally, the automatic terminal locking device and the automatic terminal loosening device further include a lifting mechanism disposed on the frame and used to lift the test fixture, the lifting mechanism being disposed at the bottom of the conveying device.

[0008] Optionally, the lifting mechanism includes a fixed plate mounted on the frame, a lifting cylinder mounted on the fixed plate, and a lifting plate connected to the lifting end of the lifting cylinder; the lifting plate is driven by the lifting cylinder to lift the test fixture set on the lifting plate.

[0009] Optionally, the automatic terminal locking device and the automatic terminal loosening device further include a positioning blocking mechanism for preventing the movement of the test fixture, the positioning blocking mechanism being located at the bottom of the conveying device.

[0010] Optionally, the positioning blocking mechanism includes a sensor for detecting whether the test fixture has reached a designated position, a blocking cylinder electrically connected to the sensor, and a blocking member disposed at the lifting end of the blocking cylinder; the blocking member is driven by the blocking cylinder to rise to a preset position and contact the side end of the test fixture to block the movement of the test fixture.

[0011] Optionally, the test fixture includes a base, a limiting mechanism disposed on the base, a test mechanism disposed on the base for testing the switching power supply, and a fixing mechanism for fixing the test mechanism in contact with the switching power supply; the limiting mechanism is provided with at least one placement station for limiting the switching power supply; the test mechanism is connected to the fixing mechanism, and the test mechanism can be driven to move in a direction close to or far from the switching power supply.

[0012] Optionally, the switching power supply is provided with a first contact position and a second contact position at its two ends, and the testing mechanism includes a first testing unit and a second testing unit; the fixing mechanism includes a first positioning component for fixing the first testing unit in contact with the first contact position and a second positioning component for fixing the second testing unit in contact with the second contact position.

[0013] Optionally, the driving device includes a first driving mechanism for pushing the first test unit to contact the first contact position and a second driving mechanism for pushing the second test unit to contact the second contact position; the first driving mechanism and the second driving mechanism are disposed opposite to each other on the frame and are both located at the screw loosening station.

[0014] Optionally, the test fixture is provided with a switch button for controlling the test; the frame is provided with a push-button switch mechanism, which includes a bracket on the frame, a horizontal cylinder on the bracket, a vertical cylinder connected to the moving end of the horizontal cylinder, and a pressure block on the moving end of the vertical cylinder; the pressure block is driven to press the switch button.

[0015] The power supply testing and locking device provided in this invention provides at least one of the following technical effects: The conveying device transports the test fixture carrying the switching power supply to the screw loosening station; the automatic terminal loosening device loosens the screws on the terminals of the switching power supply at the screw loosening station; then, driven by the driving device, the test position of the test fixture contacts the terminals of the switching power supply; next, the test fixture is transported by the conveying device to the screw locking station, where the automatic terminal locking device locks the screws on the terminals of the switching power supply, ensuring tight contact between the test position of the test fixture and the terminals at both ends of the switching power supply. Thus, both screw loosening and screw locking of the switching power supply are performed without manual intervention, achieving intelligent and automated operation and effectively improving testing efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the power supply testing and locking device provided in an embodiment of the present invention.

[0018] Figure 2 for Figure 1 A schematic diagram of the test fixture.

[0019] Figure 3 for Figure 2 A schematic diagram of the test fixture under no-load conditions.

[0020] Figure 4 for Figure 2 A schematic diagram of the structure of the first positioning component and the first test unit.

[0021] Figure 5 for Figure 4 A cross-sectional view of the first positioning component and the first test unit.

[0022] Figure 6 for Figure 2 A schematic diagram of the structure of the first positioning component.

[0023] Figure 7 for Figure 2 The diagram shows the structure of the second positioning component and the second test unit.

[0024] Figure 8 for Figure 2 A schematic diagram of the structure of the second positioning component.

[0025] Figure 9 for Figure 1 A schematic diagram of the structure of the automatic terminal loosening device and the automatic terminal locking device.

[0026] Figure 10 for Figure 1 A schematic diagram of the electric screwdriver mechanism.

[0027] Figure 11 for Figure 1 A schematic diagram of the lifting mechanism.

[0028] Figure 12 for Figure 1 A schematic diagram of the automatic terminal locking device.

[0029] Figure 13 for Figure 1 A schematic diagram of the automatic terminal loosening device.

[0030] Figure 14 for Figure 1 A schematic diagram of the structure of the test device being transported on the conveyor.

[0031] The following are the labeling elements in the figure:

[0032] 1—Switching power supply, 2—Loosening screw station, 3—Tightening screw station, 1a—First contact position, 1b—Second contact position, 10—Frame, 11—Push-button switch mechanism, 20—Test fixture, 21—Base, 22—Limiting mechanism, 23—Placement station, 24—Connector, 25—First test unit, 26—Second test unit, 27—First positioning component, 28—Second positioning component, 29—Switch button, 30—Conveying device, 40—Automatic loosening terminal assembly 41—Electric screwdriver mechanism, 42—Lifting mechanism, 43—Horizontal displacement mechanism, 44—Longitudinal displacement mechanism, 45—Raising mechanism, 46—Positioning and blocking mechanism, 50—Drive device, 51—First drive mechanism, 52—Second drive mechanism, 60—Automatic terminal locking device, 70—Detection mechanism, 211—Base plate, 212—Strip-shaped sliding hole, 213—Hand-tightening screw, 221—First limiting plate, 222—Second limiting plate, 223—First limiting groove, 22 4—Third limiting plate, 225—Second limiting groove, 271—Moving plate, 272—First anti-reverse seat, 273—First anti-reverse plate, 274—First elastic element, 275—Second elastic element, 276—Step, 281—Mounting plate, 282—Second anti-reverse seat, 283—Second anti-reverse plate, 284—Third elastic element, 285—Fourth elastic element, 286—First inclined surface, 287—Second inclined surface, 288—Plane, 411—Electric screwdriver base, 412—Electric screwdriver 413—Electric screwdriver bit; 421—Lifting fixed seat; 422—Lifting drive structure; 423—Lifting plate; 431—Horizontal fixed seat; 432—Horizontal drive structure; 441—Longitudinal fixed seat; 442—Longitudinal drive structure; 451—Fixed plate; 452—Lifting cylinder; 453—Lifting plate; 461—Sensor; 462—Blocking cylinder; 463—Blocking component; 511—Pushing fixed seat; 512—First pushing cylinder; 513—Pushing block. Detailed Implementation

[0033] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The following description is based on the accompanying drawings. Figures 1-14 The described embodiments are exemplary and intended to explain embodiments of the invention, and should not be construed as limiting the invention.

[0034] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., 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 the embodiments of the present invention 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 the present invention.

[0035] Furthermore, 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of the present invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0036] In the embodiments of the present invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention according to the specific circumstances.

[0037] In one embodiment of the present invention, such as Figures 1 to 14 As shown, a power supply testing and locking device is provided, including a frame 10, a test fixture 20 for testing a switching power supply 1, a conveying device 30 mounted on the frame 10 for conveying the test fixture 20, an automatic terminal loosening device 40 for loosening screws on the terminals of the switching power supply 1 on the test fixture 20, a driving device 50 for contacting the terminals of the switching power supply 1 with the test positions of the test fixture 20, and an automatic terminal locking device 60 for tightening screws on the terminals of the switching power supply 1 on the test fixture 20. The automatic terminal loosening device 40 and the automatic terminal locking device 60 are sequentially arranged on the conveying path of the conveying device 30 and are both fixed on the frame 10. The automatic terminal loosening device 40 is provided with a screw loosening station 2. The conveying device 30 conveys the test fixture 20 to the screw loosening station 2 to loosen the screws on the terminal of the switching power supply 1. The automatic terminal locking device 60 is provided with a screw locking station 3. The conveying device 30 conveys the test fixture 20 from the screw loosening station 2 to the screw locking station 3, and the automatic terminal locking device 60 locks the screws on the terminal of the switching power supply 1.

[0038] Specifically, the conveying device 30 transports the test fixture 20 carrying the switching power supply 1 to the screw loosening station 2. The automatic terminal loosening device 40 loosens the screws on the terminals of the switching power supply 1 at the screw loosening station 2. Then, driven by the driving device 50, the test position of the test fixture 20 contacts the terminals of the switching power supply 1. Next, the test fixture 20 is transported by the conveying device 30 to the screw tightening station 3, where the automatic terminal tightening device 60 tightens the screws on the terminals of the switching power supply 1, ensuring tight contact between the test position of the test fixture 20 and the terminals at both ends of the switching power supply 1. In this way, both the loosening and tightening of the screws on the switching power supply 1 are done manually, achieving intelligent and automated operation and effectively improving testing efficiency.

[0039] Furthermore, the conveying device 30 can be a chain or belt conveying structure, and the test fixture 20 is attached to the conveying surface of the conveying device 30 to achieve conveying.

[0040] In this embodiment, as Figures 2 to 3 As shown, the test fixture 20 includes a base 21, a limiting mechanism 22 disposed on the base 21, a test mechanism disposed on the base 21 for testing the switching power supply 1, and a fixing mechanism for fixing the test mechanism in contact with the switching power supply 1. The limiting mechanism 22 is provided with at least one placement station 23 for limiting the switching power supply 1. The test mechanism is connected to the fixing mechanism and can be moved towards or away from the switching power supply 1 by a drive. Specifically, in use, the switching power supply 1 is placed in the placement station 23 on the limiting mechanism 22. Multiple placement stations 23 can be set to allow multiple switching power supplies 1 to be placed for simultaneous testing, improving testing efficiency. Then, the drive device 50 drives the test mechanism to move closer to the switching power supply 1 until the test mechanism contacts both ends of the switching power supply 1. At this point, the fixing mechanism fixes the position of the test mechanism. After the drive device 50 resets, the test mechanism and the switching power supply 1 remain in contact. This reduces labor costs, ensures high safety, and provides good testing results.

[0041] Furthermore, the power connection test device includes a connector 24, which is electrically connected to the test mechanism.

[0042] In this embodiment, as Figures 2 to 3 As shown, the limiting mechanism 22 includes a first limiting plate 221 and a second limiting plate 222 disposed opposite to the first limiting plate 221; the first limiting plate 221 and the second limiting plate 222 form at least one placement station 23 for limiting the switching power supply 1. Specifically, the first limiting plate 221 and the second limiting plate 222 are both fixed on the base 21, and the first limiting plate 221 and the second limiting plate 222 are arranged in parallel and spaced apart. The switching power supply 1 can be placed through the at least one placement station 23 formed by the first limiting plate 221 and the second limiting plate 222. Multiple placement stations 23 can be provided to place multiple switching power supplies 1.

[0043] In this embodiment, as Figures 2 to 3 As shown, both the first limiting plate 221 and the second limiting plate 222 are provided with at least one first limiting groove 223. The first limiting groove 223 on the first limiting plate 221 and the corresponding first limiting groove 223 on the second limiting plate 222 form a placement station 23 for limiting the switching power supply 1. Specifically, the first limiting plate 221 has a first limiting groove 223 on the side facing the second limiting plate 222, and the second limiting plate 222 also has a first limiting groove 223 on the side facing the first limiting plate 221. The first limiting groove 223 of the first limiting plate 221 corresponds to the first limiting groove 223 of the second limiting plate 222 and forms a placement station 23 for limiting the switching power supply 1 (the formation of multiple placement stations 23 is similar). When placing the switching power supply 1, both ends of the switching power supply 1 overlap within the corresponding first limiting groove 223 to achieve limitation.

[0044] In this embodiment, as Figures 2 to 3 As shown, the limiting mechanism 22 also includes two third limiting plates 224 disposed between the first limiting plate 221 and the second limiting plate 222; each of the two third limiting plates 224 is provided with at least one placement station 23 for limiting the switching power supply 1. Specifically, the first limiting plate 221, the second limiting plate 222, and the two third limiting plates 224 are parallel to each other. The two third limiting plates 224 are disposed between the first limiting plate 221 and the second limiting plate 222 and are both fixed on the base 21. The spacing between the two third limiting plates 224 can be adjusted according to different models of switching power supply 1 to form a placement station 23 adapted to the switching power supply 1.

[0045] In this embodiment, as Figures 2 to 3 As shown, the thickness of both third limiting plates 224 is less than the thickness of the first limiting plate 221 and the second limiting plate 222. Specifically, since the first limiting plate 221, the second limiting plate 222, and the two third limiting plates 224 are all disposed on the surface of the base 21, and the thickness of the two third limiting plates 224 is less than the thickness of the first limiting plate 221 and the second limiting plate 222, interference with the placement of the switching power supply 1 on the first limiting plate 221 and the second limiting plate 222 can be avoided.

[0046] In this embodiment, as Figures 2 to 3As shown, each of the two third limiting plates 224 is provided with at least one second limiting groove 225, and the two opposing second limiting grooves 225 form a placement station 23 for limiting the switching power supply 1. Specifically, each of the two third limiting plates 224 has at least one second limiting groove 225 on its facing inner side. The second limiting groove 225 of one third limiting plate 224 corresponds to the second limiting groove 225 of the other third limiting plate 224 and forms a placement station 23 for limiting the switching power supply 1 (the formation of multiple placement stations 23 is similar). When placing the switching power supply 1, both ends of the switching power supply 1 overlap the corresponding second limiting groove 225 to achieve limitation.

[0047] In this embodiment, as Figure 2 As shown, the switching power supply 1 has a first contact position 1a and a second contact position 1b at its two ends. The testing mechanism includes a first testing unit 25 and a second testing unit 26. The fixing mechanism includes a first positioning component 27 for fixing the first testing unit 25 to contact the first contact position 1a and a second positioning component 28 for fixing the second testing unit 26 to contact the second contact position 1b. Specifically, the first testing unit 25 and the second testing unit 26 are respectively located at both ends of the limiting mechanism 22. The first testing unit 25 is located on the first positioning component 27, and the second testing unit 26 is located on the second positioning component 28. When the switching power supply 1 is fixed and ready for testing, the switching power supply 1 is placed on the placement station 23 of the limiting mechanism 22. The first test unit 25 is driven by the driving device 50 to move towards the first contact position 1a until the first test unit 25 contacts the first contact position 1a. The first positioning component 27 fixes the position of the first test unit 25 so that after the driving device 50 removes the force that drives the first test unit 25 to move, the first test unit 25 remains in contact with the first contact position 1a. At the same time, the second test unit 26 is driven to move towards the second contact position 1b until the second test unit 26 contacts the second contact position 1b. The second positioning component 28 fixes the position of the second test unit 26 so that after the driving device 50 removes the force that drives the second test unit to move, the second test unit 26 remains in contact with the second contact position 1b.

[0048] Among them, such as Figures 2 to 7As shown, the first test unit 25 is equipped with an AC probe, and the second test unit 26 is equipped with a U-shaped terminal. The U-shaped terminal and the AC probe make contact with the corresponding terminals of the switching power supply 1. Specifically, the conveying device 30 conveys the test fixture 20 carrying the switching power supply 1 to the screw loosening station 2. The automatic terminal loosening device 40 loosens the screws on the second contact position 1b of the switching power supply 1 at the screw loosening station 2. Then, driven by the driving device 50, the AC probe of the first test unit 25 of the test fixture 20 contacts the terminal of the first contact position 1a, and the U-shaped terminal of the second test unit 26 contacts the terminal on the second contact position 1b. Next, the test fixture 20 is conveyed by the conveying device 30 to the screw tightening station 3. The automatic terminal tightening device 60 tightens the screws on the second contact position 1b of the switching power supply 1, so that the U-shaped terminal is in close contact with the terminal of the second contact position 1b of the switching power supply 1.

[0049] In this embodiment, as Figures 4 to 5 As shown, the first positioning component 27 includes a movable plate 271 slidably connected to the base 21, a first anti-reverse seat 272 disposed on the base 21, a first anti-reverse plate 273 rotatably connected to the first anti-reverse seat 272, a first elastic member 274 connected between the first anti-reverse seat 272 and the first anti-reverse plate 273, and a second elastic member 275 whose two ends are respectively connected to the base 21 and the movable plate 271; the top of the first anti-reverse plate 273 contacts the bottom of the movable plate 271, and the first anti-reverse plate 273 is provided with a step 276 on the side of the movable plate 271 close to the movable plate 271; the second elastic member 275 is located on the side of the movable plate 271 facing away from the switching power supply 1.

[0050] Specifically, the first test unit 25 is mounted on the movable plate 271, and the end of the first anti-reverse plate 273 near the switching power supply 1 can swing on the first anti-reverse seat 272. The two ends of the first elastic member 274 are connected to the first anti-reverse seat 272 and the first anti-reverse plate 273 respectively, with the first elastic member 274 positioned near the end of the first anti-reverse plate 273 connected to the first anti-reverse seat 272. The swingable end of the first anti-reverse plate 273 extends towards the limiting mechanism 22. When testing the switching power supply 1, the movable plate 271 contacts the first anti-reverse plate 273 and compresses the first elastic member 274, causing the first elastic member 274 to generate elastic force. Driven by the drive device 50, the movable plate 271 moves the first test unit 25 closer to the switching power supply 1. The movable plate 271 slides relative to the base 21, and the second elastic element 275 stretches to generate tension until the first test unit 25 contacts the first contact position 1a. After passing the step 276, the movable plate 271 is subjected to the elastic force of the first elastic element 274, causing one end of the first anti-reverse plate 273 to swing upwards. The drive device 50 removes the force driving the movable plate 271, and the tension of the second elastic element 275 pulls the movable plate 271 away from the switching power supply 1. The side wall of the step 276 provides a counterforce to prevent the movable plate 271 from moving, thus fixing the movable plate 271 and ensuring that the first test unit 25 remains in contact with the first contact position 1a, improving test stability.

[0051] Furthermore, such as Figures 4 to 5 As shown, a base plate 211 is provided on the base 21, a first limiting plate 221 is installed on the base plate 211, a first positioning component 27 is fixed on the base plate 211, and a movable plate 271 is slidably connected to the base plate 211 (a slide rail can be provided on the base plate 211, and a slider slidably connected to the slide rail can be provided on the movable plate 271). A second elastic element 275 connects the movable plate 271 and the base plate 211. A strip-shaped sliding hole 212 is provided on the base plate 211, and a threaded end of a hand-tightening screw 213 passes through the strip-shaped sliding hole 212 and is threadedly connected to the base 21. The distance between the first limiting plate 221 and the second limiting plate 222 can be adjusted through the strip-shaped sliding hole 212.

[0052] In this embodiment, as Figures 4 to 6 As shown, the first anti-reverse plate 273 is provided with a guide slope 277 extending upward from the end of the first anti-reverse plate 273 away from the limiting mechanism 22 to the step 276. Specifically, the guide slope 277 is provided so that when the moving plate 271 slides along the guide slope 277 toward the switching power supply 1, the first anti-reverse plate 273 continuously presses down on the first elastic member 274, and the first elastic member 274 generates elastic force. When the part of the moving plate 271 that is in contact with the guide slope 277 has completely passed through the guide slope 277, the elastic force of the first elastic member 274 causes the first anti-reverse plate 273 to swing upward, so that the moving plate 271 engages with the step 276.

[0053] In this embodiment, as Figures 4 to 6 As shown, the first elastic element 274 is a compression spring, and the second elastic element 275 is a tension spring. Specifically, the first elastic element 274 is a compression spring, which generates elastic force during the compression process. The second elastic element 275 is a tension spring, which generates tension during the movement of the moving plate 271.

[0054] In this embodiment, as Figures 7 to 8 As shown, the second positioning component 28 includes a mounting plate 281 slidably connected to the base 21, a second anti-reverse seat 282 disposed on the base 21, a second anti-reverse plate 283 rotatably connected to the second anti-reverse seat 282, a third elastic member 284 connected between the second anti-reverse seat 282 and the second anti-reverse plate 283, and a fourth elastic member 285 whose two ends are respectively connected to the base 21 and the moving plate 271; the fourth elastic member 285 is located on the side of the moving plate 271 facing away from the switching power supply 1; the mounting plate 281 is driven to move toward the switching power supply 1 and contacts the second anti-reverse plate 283 to compress the third elastic member 284.

[0055] Specifically, the second test unit 26 is mounted on the mounting plate 281, and the end of the second anti-reverse plate 283 away from the switching power supply 1 can swing on the second anti-reverse seat 282. The two ends of the third elastic member 284 are connected to the second anti-reverse seat 282 and the second anti-reverse plate 283 respectively, and the third elastic member 284 is positioned close to the end of the second anti-reverse plate 283 connected to the second anti-reverse seat 282. The swingable end of the second anti-reverse plate 283 extends away from the limiting mechanism 22. When testing the switching power supply 1, the mounting plate 281 contacts the second anti-reverse plate 283 during movement and compresses the third elastic member 284, generating elastic force. The mounting plate 281 is driven to move the second test unit 26 closer to the switching power supply 1, causing the mounting plate 281 to slide relative to the base 21, and the fourth elastic member 285 to stretch, generating tension until the second test unit 26 contacts the second contact position 1b. The driving device 50 removes the force of driving the mounting plate 281, the tension of the fourth elastic element 285 pulls the mounting plate 281 to move away from the switching power supply 1, while the force provided by the third elastic element 284 pushes the mounting plate 281 upward to prevent it from moving, thereby fixing the mounting plate 281 and ensuring that the second test unit 26 and the second contact position 1b remain in contact, thus improving the stability of the test.

[0056] In this embodiment, as Figure 8As shown, the top of the second anti-reverse plate 283 is provided with a first inclined surface 286, a second inclined surface 287 forming an obtuse angle with the first inclined surface 286, and a horizontally arranged plane 288. The first inclined surface 286 is located close to the limiting mechanism 22, and the third elastic member 284 is located below the first inclined surface 286. Specifically, the two ends of the second inclined surface 287 are respectively connected to the first inclined surface 286 and the plane 288, and the plane 288 forms an obtuse angle with the second inclined surface 287. When the mounting plate 281 slides toward the switching power supply 1, the mounting plate 281 moves along the plane 288, and then passes the second inclined surface 287. The second anti-reverse plate 283 continuously presses down on the third elastic member 284, and the third elastic member 284 generates elastic force. When the moving plate 271 comes into contact with the first inclined surface 286, the elastic force of the third elastic member 284 causes the first anti-reverse plate 273 to fix the mounting plate 281.

[0057] In this embodiment, as Figures 7 to 8 As shown, the third elastic element 284 is a compression spring, and the fourth elastic element 285 is a tension spring. Specifically, the third elastic element 284 is a compression spring, which generates elastic force during compression. The fourth elastic element 285 is a tension spring, which generates tension during the movement of the mounting plate 281.

[0058] In this embodiment, as Figures 9 to 13 As shown, both the automatic terminal locking device 60 and the automatic terminal loosening device 40 include an electric screwdriver mechanism 41 for loosening or tightening the terminal screws on the switching power supply 1, a lifting mechanism 42 for driving the electric screwdriver mechanism 41 to move up and down, a lateral displacement mechanism 43 for driving the lifting mechanism 42 to move laterally along the conveying direction of the conveying device 30, and a longitudinal displacement mechanism 44 mounted on the frame 10 for driving the lateral displacement mechanism 43 to move in the direction perpendicular to the conveying device 30. Specifically, the electric screwdriver mechanism 41 of the automatic terminal loosening device 40 is used to loosen the terminal screws on the switching power supply 1, and the electric screwdriver mechanism 41 of the automatic terminal locking device 60 is used to tighten the terminal screws on the switching power supply 1. The driving device 50 and the longitudinal displacement mechanism 44 are both mounted on the frame 10. In use, the longitudinal displacement mechanism 44 drives the transverse displacement mechanism 43 to move horizontally in the conveying direction of the vertical conveying device 30, the transverse displacement mechanism 43 drives the lifting mechanism 42 to move horizontally in the conveying direction of the conveying device 30, and the lifting mechanism 42 drives the electric screwdriver mechanism 41 to move up and down in the vertical direction. In this way, the electric screwdriver 412 assembly can be moved closer to or further away from the switching power supply 1.

[0059] Furthermore, such as Figure 10As shown, the electric screwdriver mechanism 41 includes an electric screwdriver base 411 connected to the lifting end of the lifting mechanism 42 and an electric screwdriver 412 mounted on the electric screwdriver base 411. The electric screwdriver head 413 of the electric screwdriver 412 is located at one end of the electric screwdriver 412 close to the conveying device 30. The electric screwdriver head 413 is driven to rotate by the electric screwdriver 412 to loosen or tighten the terminal screws of the switching power supply 1.

[0060] Furthermore, such as Figure 10 As shown, the lifting mechanism 42 includes a lifting fixed base 421 connected to the moving end of the lateral displacement mechanism 43, a lifting drive structure 422 fixed to the lifting fixed base 421, and a lifting plate 423 connected to the lifting end of the lifting drive structure 422. An electric screwdriver mechanism 41 is mounted on the lifting plate 423. The lifting drive structure 422 drives the lifting plate 423 to move vertically, thereby enabling the electric screwdriver mechanism 41 to move.

[0061] Furthermore, such as Figure 10 As shown, the lateral displacement mechanism 43 includes a lateral fixed base 431 connected to the moving end of the longitudinal displacement mechanism 44, and a lateral drive structure 432 fixed on the lateral fixed base 431. The moving end of the lateral drive structure 432 is connected to the lifting fixed base 421, and the lateral fixed base 431 is slidably connected to the frame 10. The lateral displacement mechanism 43 drives the lifting fixed base 421 to move laterally reciprocally along the conveying direction of the parallel conveying device 30.

[0062] Furthermore, such as Figure 10 As shown, the longitudinal displacement mechanism 44 includes a longitudinal fixed seat 441 mounted on the frame 10 and a longitudinal drive structure 442 mounted on the longitudinal fixed seat 441. The moving end of the longitudinal drive structure 442 is connected to the transverse fixed seat 431 and reciprocates in the conveying direction of the vertical conveying device 30 under the drive of the longitudinal drive structure 442.

[0063] The lifting drive structure 422, the lateral drive structure 432, and the longitudinal drive structure 442 all employ a structure connecting a motor and a screw to drive the corresponding components to move. Alternatively, linear modules, electric cylinders, pneumatic cylinders, and hydraulic cylinders can also be used to achieve the driving function.

[0064] In this embodiment, as Figure 11 and Figure 14 As shown, the automatic terminal locking device 60 and the automatic terminal loosening device 40 also include a lifting mechanism 45 mounted on the frame 10 for lifting the test fixture 20. The lifting mechanism 45 is located at the bottom of the conveying device 30. Specifically, when the test fixture 20 is conveyed to the screw loosening station 2 or the screw tightening station 3, the lifting mechanism 45 lifts the test fixture 20 to a preset height, and then the screws are loosened at the screw loosening station 2 and the drive device 50 pushes the moving plate 271 and the mounting plate 281, etc., or the screws are tightened at the screw tightening station 3.

[0065] In this embodiment, as Figures 11 to 14 As shown, the lifting mechanism 45 includes a fixed plate 451 mounted on the frame 10, a lifting cylinder 452 mounted on the fixed plate 451, and a lifting plate 453 connected to the lifting end of the lifting cylinder 452. The lifting plate 453 is driven by the lifting cylinder 452 to lift the test fixture 20 set on the lifting plate 453. Specifically, the lifting plate 453 is located above the lifting cylinder 452. When the test fixture 20 is conveyed to the screw loosening station 2 or the screw tightening station 3, the lifting cylinder 452 drives the lifting plate 453 to move upward, and then receives the test fixture 20 and lifts the test fixture 20 above the conveying surface of the conveying device 30 until the test fixture 20 rises to the preset station.

[0066] In this embodiment, as Figures 11 to 14 As shown, the automatic terminal locking device 60 and the automatic terminal loosening device 40 also include a positioning blocking mechanism 46 for preventing the test fixture 20 from moving. The positioning blocking mechanism 46 is located at the bottom of the conveying device 30. Specifically, when the test fixture 20 is conveyed to the screw loosening station 2 or the screw locking station 3, the positioning blocking mechanism 46 prevents the test fixture 20 from continuing to move.

[0067] In this embodiment, as Figures 11 to 14 As shown, the positioning blocking mechanism 46 includes a sensor 461 for detecting whether the test fixture 20 has reached a designated position, a blocking cylinder 462 electrically connected to the sensor 461, and a blocking member 463 disposed on the lifting end of the blocking cylinder 462. The blocking member 463 is driven by the blocking cylinder 462 to rise to a preset position and contact the side end of the test fixture 20 to block the movement of the test fixture 20. Specifically, the sensor 461 is mounted on the frame 10. After the sensor 461 detects the test fixture 20, it transmits an electrical signal to the blocking cylinder 462. The blocking cylinder 462 drives the blocking member 463 to move upward and prevent the test fixture 20 from continuing to move. The blocking cylinder 462 is disposed on the fixed plate 451.

[0068] In this embodiment, as Figure 1 , Figure 9 and Figures 12 to 13As shown, the drive device 50 includes a first drive mechanism 51 for pushing the first test unit 25 to contact the first contact position 1a and a second drive mechanism 52 for pushing the second test unit 26 to contact the second contact position 1b; the first drive mechanism 51 and the second drive mechanism 52 are disposed opposite to each other on the frame 10 and are both located on the screw loosening station 2. Specifically, the first drive mechanism 51 includes a pusher fixing seat 511 disposed on the frame 10, a first pusher cylinder 512 mounted on the pusher fixing seat 511, and a pusher block 513 disposed on the moving end of the first pusher cylinder 512. The second drive mechanism 52 includes a mounting bracket disposed on the frame 10, a second pusher cylinder mounted on the mounting bracket, and a pusher plate disposed on the moving end of the second pusher cylinder. When the test fixture 20 is located at the screw loosening station 2 and the screw loosening operation is completed, the first pusher cylinder 512 drives the pusher block 513 to move towards the switching power supply 1, and then pushes the moving plate 271 until the moving plate 271 is limited by the first positioning component 27. At the same time, the second pusher cylinder drives the pusher plate to move towards the switching power supply 1, and then pushes the mounting plate 281 until the mounting plate 281 is limited by the second positioning component 28. Then the first drive mechanism 51 and the second drive mechanism 52 are reset.

[0069] In this embodiment, as Figures 3 to 14 As shown, the test fixture 20 is equipped with a switch button 29 for controlling the test; the frame 10 is equipped with a push-button switch mechanism 11, which includes a bracket mounted on the frame 10, a horizontal cylinder mounted on the bracket, a vertical cylinder connected to the moving end of the horizontal cylinder, and a pressure block mounted on the moving end of the vertical cylinder; the pressure block is driven to press the switch button 29. Specifically, the push-button switch mechanism 11 is located at the screw-locking station 3. After the test fixture 20 is screwed, the horizontal cylinder drives the vertical cylinder to move closer to the test fixture 20, and then the vertical cylinder drives the pressure block to move downwards to press the switch button 29. In this way, the test fixture 20 tests the switching power supply 1 automatically without manual intervention.

[0070] Furthermore, the automatic terminal loosening device 40 also includes a detection mechanism 70 for detecting the orientation of the switching power supply 1. The detection mechanism 70 is mounted on the frame 10 and positioned above the test fixture 20. When the test fixture 20 moves to the screw loosening station 2, the detection mechanism 70 detects whether the switching power supply 1 is placed in reverse to avoid affecting subsequent operations. The detection mechanism 70 can detect the orientation of the switching power supply 1 by using a CCD camera or other methods.

[0071] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A power supply testing and locking device, characterized in that: The device includes a frame, a test fixture for testing a switching power supply, a conveying device mounted on the frame for transporting the test fixture, an automatic terminal loosening device for loosening screws on the terminals of the switching power supply on the test fixture, a driving device for contacting the terminals of the switching power supply with the test positions of the test fixture, and an automatic terminal locking device for tightening screws on the terminals of the switching power supply on the test fixture. The automatic terminal loosening device and the automatic terminal locking device are sequentially arranged in the conveying path of the conveying device. The automatic terminal loosening device has a screw loosening station, and the automatic terminal locking device has a screw tightening station.

2. The power supply testing and locking device according to claim 1, characterized in that: Both the automatic terminal locking device and the automatic terminal loosening device include an electric screwdriver mechanism for loosening or locking terminal screws on the switching power supply, a lifting mechanism for driving the electric screwdriver mechanism to move up and down, a lateral displacement mechanism for driving the lifting mechanism to move laterally along the conveying direction of the conveying device, and a longitudinal displacement mechanism mounted on the frame for driving the lateral displacement mechanism to move in a direction perpendicular to the conveying device.

3. The power supply testing and locking device according to claim 2, characterized in that: The automatic terminal locking device and the automatic terminal loosening device also include a lifting mechanism disposed on the frame and used to lift the test fixture, the lifting mechanism being disposed at the bottom of the conveying device.

4. The power supply testing and locking device according to claim 3, characterized in that: The lifting mechanism includes a fixed plate mounted on the frame, a lifting cylinder mounted on the fixed plate, and a lifting plate connected to the lifting end of the lifting cylinder; the lifting plate is driven by the lifting cylinder to lift the test fixture set on the lifting plate.

5. The power supply testing and locking device according to claim 2, characterized in that: The automatic terminal locking device and the automatic terminal loosening device also include a positioning blocking mechanism for preventing the movement of the test fixture, the positioning blocking mechanism being located at the bottom of the conveying device.

6. The power supply testing and locking device according to claim 5, characterized in that: The positioning and blocking mechanism includes a sensor for detecting whether the test fixture has reached a designated position, a blocking cylinder electrically connected to the sensor, and a blocking member disposed at the lifting end of the blocking cylinder; the blocking member is driven by the blocking cylinder to rise to a preset position and contact the side end of the test fixture to block the movement of the test fixture.

7. The power supply testing and locking device according to any one of claims 1 to 6, characterized in that: The test fixture includes a base, a limiting mechanism disposed on the base, a test mechanism disposed on the base for testing the switching power supply, and a fixing mechanism for fixing the test mechanism in contact with the switching power supply; the limiting mechanism is provided with at least one placement station for limiting the switching power supply; the test mechanism is connected to the fixing mechanism, and the test mechanism can be driven to move in a direction close to or away from the switching power supply.

8. The power supply testing and locking device according to claim 7, characterized in that: The switching power supply has a first contact position and a second contact position respectively at both ends. The testing mechanism includes a first testing unit and a second testing unit. The fixing mechanism includes a first positioning component for fixing the first testing unit in contact with the first contact position and a second positioning component for fixing the second testing unit in contact with the second contact position.

9. The power supply testing and locking device according to claim 8, characterized in that: The driving device includes a first driving mechanism for pushing the first test unit to contact the first contact position and a second driving mechanism for pushing the second test unit to contact the second contact position; the first driving mechanism and the second driving mechanism are disposed opposite to each other on the frame and are both located at the screw loosening station.

10. The power supply testing and locking device according to claim 7, characterized in that: The test fixture is equipped with a switch button for controlling the test; the frame is equipped with a push-button switch mechanism, which includes a bracket on the frame, a horizontal cylinder on the bracket, a vertical cylinder connected to the moving end of the horizontal cylinder, and a pressure block on the moving end of the vertical cylinder; the pressure block is driven to press the switch button.

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