Frequency converter control panel detection equipment and detection method thereof

Abstract

The invention provides frequency converter control panel detection equipment and a detection method thereof, the frequency converter control panel detection equipment is used for detecting a control panel, the control panel is integrally provided with a plurality of keys and a display screen, the frequency converter control panel detection equipment comprises a rack, and the rack is provided with a first mounting chamber and a second mounting chamber located right above the first mounting chamber; the supporting modules of different models are detachably installed in the first installation cavity, the supporting modules of different models are matched with the control panels of different models, and limiting grooves for fixing the control panels are formed in the supporting modules; the pressing modules of different models are detachably installed in the second installation cavity, and the pressing modules of different models are matched with the control panels of different models; the shooting mechanism is used for shooting an actual image of the display screen; and the upper computer is electrically connected with the shooting mechanism to receive the actual image and compare the actual image with the standard image. The frequency converter control panel can be automatically realized, the efficiency is high, and the detection accuracy is high.

Description

Technical Field

[0001] This invention relates to the field of frequency converter testing technology, and in particular to a frequency converter control panel testing device and its testing method. Background Technology

[0002] A variable-frequency drive (VFD) is a power control device that controls an AC motor by changing the frequency of its power supply. This enables functions such as soft starting, variable-frequency speed regulation, improved operating accuracy, power factor correction, and overcurrent / overvoltage / overload protection for AC asynchronous motors. VFDs are frequently used in many important industries, including petroleum, chemical, and manufacturing.

[0003] The inverter control panel is a crucial component for controlling the aforementioned parameters. It typically integrates multiple control buttons and a display panel, allowing users to observe motor operating parameters for precise adjustment. The inverter control panel needs to undergo fault testing before being assembled into the complete machine to ensure it is in good working order.

[0004] However, the testing of inverter control panels currently relies mainly on manual inspection, which involves manually pressing control buttons and visually observing the display panel to ensure the information is correct. Because this is a repetitive, mechanical task, human fatigue can easily lead to missed button presses, resulting in potential quality issues. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a testing device and method for inverter control panels, which automates the testing of inverter control panels with high efficiency and high accuracy.

[0006] This invention is achieved through the following technical solution:

[0007] A frequency converter control panel testing device is used to test the control panel, wherein the control panel integrates multiple buttons and a display screen, and the frequency converter control panel testing device includes:

[0008] A frame, wherein a first mounting chamber and a second mounting chamber are provided on the frame;

[0009] Multiple support modules of different models are provided. The support modules are detachably installed in the first mounting cavity. The different models of the support modules are adapted to the different models of the control panel. The support modules are provided with limiting grooves for fixing the control panel.

[0010] Multiple different models of press modules are provided. The press modules are detachably installed in the second mounting chamber. The different models of press modules are adapted to different models of control panels. The press modules are provided with multiple press parts that can press the buttons.

[0011] A camera mechanism configured to capture an actual image of the display screen;

[0012] A host computer, which is electrically connected to the imaging mechanism, is used to receive the actual image and compare it with a standard image.

[0013] The controller is electrically connected to the host computer, the pressing component, and the shooting mechanism.

[0014] Furthermore, the inverter control panel detection device also includes a drive mechanism configured to drive the pressing module and the shooting mechanism closer to or further away from the control panel.

[0015] Furthermore, the frame includes a fixed base plate, which divides the interior of the frame into a test area and an electrical area; the support module, pressing module, shooting mechanism, and driving mechanism are all located in the test area, and the controller and power supply components are located in the electrical area.

[0016] Furthermore, a first connector is fixed on the fixed base plate. The first connector includes a first connecting plate and support plates symmetrically arranged on both sides. The first mounting chamber is formed by the first connecting plate and the support plates on both sides. The support module is at least partially slidably disposed on the support plates.

[0017] Furthermore, the support plate is provided with sliding grooves, and the two ends of the first mounting plate of the support module are slidably embedded in the two sliding grooves respectively.

[0018] Furthermore, the fixed base plate is also provided with a first locking component, which is configured to limit the support module when the support module is installed with the frame.

[0019] Furthermore, the pressing module is detachably connected to the driving mechanism.

[0020] Furthermore, the driving mechanism includes a first driving member, a movable plate, and a fixing assembly. The fixing assembly includes a plurality of fixing rods fixed to a fixed base plate and a first fixing plate fixed to the top of the fixing rods. The movable plate is slidably connected to the fixing rods. The first driving member is fixed to the first fixing plate, and its first output end passes through the first fixing plate and is fixed to the movable plate. The pressing module is detachably connected to the movable plate.

[0021] Furthermore, two symmetrical snap-fit ​​components are fixed below the movable plate, and snap-fit ​​grooves are provided on the snap-fit ​​components. The two ends of the second mounting plate of the pressing module are respectively slidably embedded in the two snap-fit ​​grooves.

[0022] A testing method for a frequency converter control panel testing device as described in any one of the above claims, comprising: Select the corresponding model of the support module and the pressing module from the control panel required for testing;

[0023] Place the control panel inside the limiting groove;

[0024] The support module and the pressing module are respectively installed in the first mounting chamber and the second mounting chamber;

[0025] When the device is started, the controller controls multiple pressing parts to press the corresponding buttons in sequence. Each time a pressing part presses the button, the controller controls the shooting mechanism to capture the actual image of the display screen and transmit it to the host computer.

[0026] The host computer compares the multiple actual images with the corresponding multiple standard images stored internally. If one or more of the actual images do not match the corresponding standard images, they are judged as unqualified; if they all match, they are judged as qualified.

[0027] Compared with the prior art, the advantages of this invention are:

[0028] 1. The equipment automates the detection of the inverter control panel. It automatically presses the buttons through the pressing module, automatically captures images through the imaging mechanism, and automatically compares and judges the results with the host computer. This replaces the traditional manual pressing and visual judgment method, which not only avoids fatigue errors caused by manual operation, but also significantly shortens the time for a single test, effectively improving the detection efficiency and the accuracy of the results.

[0029] 2. Both the support module and the pressing module adopt a detachable design, achieving quick assembly and disassembly through a snap-fit ​​and plug-in locking structure. For control panel models with different sizes and button layouts, only the corresponding support module (for panel fixing) and pressing module (for button positions) need to be replaced, without adjusting the main structure of the equipment. This greatly shortens the changeover time and improves the equipment's versatility and flexibility of use.

[0030] 3. The carrier plate and quick-change components of the support module adopt a floating design. The elastic elements buffer the pressing impact force to avoid damage to the panel due to excessive pressure and deformation of the quick-change components. The carrier plate is equipped with limit blocks, clearance holes and elastic pads. The quick-change components are equipped with protective covers. At the same time, the frame separates the test area from the electrical area, reducing the impact of electrical components on the test accuracy and safety risks, and comprehensively ensuring the safety of the equipment and the panel under test during the test process. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of a frequency converter control panel testing device according to an embodiment of the present invention;

[0032] Figure 2 This is a partial structural schematic diagram of a frequency converter control panel detection device according to an embodiment of the present invention;

[0033] Figure 3 This is a partially exploded view of a frequency converter control panel detection device according to an embodiment of the present invention;

[0034] Figure 4 This is a schematic diagram of the structure of a movable plate according to an embodiment of the present invention;

[0035] Figure 5 This is a schematic diagram of the structure of the support module and the first connector according to an embodiment of the present invention;

[0036] Figure 6 This is a schematic diagram of the structure of a support module according to an embodiment of the present invention;

[0037] Figure 7 This is a schematic diagram of another state of the support module according to an embodiment of the present invention;

[0038] Figure 8 This is a partially exploded view of a support module according to an embodiment of the present invention;

[0039] Figure 9 This is a schematic diagram of a quick-change component according to an embodiment of the present invention;

[0040] Figure 10 This is a partially exploded view of a quick-change component according to an embodiment of the present invention;

[0041] Figure 11 This is a partial perspective sectional view of the quick-change component and support module assembly according to an embodiment of the present invention;

[0042] Figure 12 This is a partial perspective sectional view of the quick-change component and support module in an embodiment of the present invention, showing the components without assembly.

[0043] Figure 13 This is a schematic diagram of the structure of a pressing module according to an embodiment of the present invention;

[0044] Figure 14 This is a partial structural diagram of a pressing module according to an embodiment of the present invention;

[0045] Figure 15 This is a schematic diagram of the pressing module from another perspective according to an embodiment of the present invention;

[0046] Figure 16This is a circuit connection block diagram of the inverter control panel detection device according to an embodiment of the present invention.

[0047] Explanation of reference numerals in the attached drawings: 1. Control panel; 2. Frame; 3. Support module; 4. Pressing module; 5. Shooting mechanism; 6. Drive mechanism; 7. Host computer; 8. Controller; 10. Button; 11. Display screen; 12. Power-on interface; 20. Fixed base plate; 21. Test area; 22. Electrical area; 23. First connector; 24. First locking assembly; 25. First fixing plate; 26. Fixing rod; 30. Limiting groove; 31. First mounting plate; 32. Carrier box; 32a. Hinge; 33. Telescopic bracket; 36. Carrier plate; 40. Second mounting plate; 41. Third fixing plate; 42. Connecting rod; 43. Pressing component; 44. Third connecting plate; 50. Camera; 51. Fixing column; 52. 53. Second connecting plate; 60. Protective cover; 61. First driving component; 62. Movable plate; 63. Snap-fit ​​component; 64. Second locking assembly; 80. Baffle; 90. Quick-change assembly; 91. First connector male end; 92. First connector female end; 93. Second connector male end; 91a. First sensor; 92a. Second sensor; 211. First mounting chamber; 212. Second mounting chamber; 230. First connecting plate; 231. Support plate; 240. Second driving component; 241. Movable block; 242. Positioning pin; 250. First clearance hole; 310. First positioning hole; 311. Sliding hole; 312. Linear bearing; 313. First elastic element; 314. Limiting 316. Position screw; 317. Elastic washer; 318. Photoelectric sensor; 319. Mounting slot; 320. Threaded hole; 321. First sidewall; 322. Second sidewall; 323. Bottom cover; 331. Floating groove; 351. Locking piece; 352. Hand screw; 360. Guide rod; 361. Limiting block; 362. Clearance hole; 363. Positioning post; 364. Detection hole; 365. Insertion hole; 400. Second positioning hole; 401. Second camera hole; 410. Test clearance hole; 411. First abutment post; 412. Second abutment post; 53. Protective cover; 600. First output end; 610. Camera hole; 620. Snap-fit ​​groove; 620a. Bottom wall; 620b. Second chamfer; 630. Fixed... 631. Set nut; 640. Locking bolt; 65. Abutment block; 800. Abutment strip; 801. Fixing head; 802. Mounting base; 803. Female pin; 804. Cable; 805. Mounting part; 806. Fixing part; 807. Floating screw; 808a. Nut part; 808. Second elastic element; 809. First fixing groove; 800b. Second fixing groove; 800. Screw clearance groove; 801. First guide hole; 802. Second guide hole; 803. Second fixing plate; 804. Stud; 805. Cable clearance hole; 806. Mounting clearance groove; 800a. First part; 800b. Second part; 351a. Locking hole; 232. Sliding groove; 232a. Guide groove. Detailed Implementation

[0048] The following detailed, non-limiting description of the invention's technical solutions, in conjunction with preferred embodiments and accompanying drawings, is provided. In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the invention, and should not be construed as limiting the invention.

[0049] like Figures 1 to 16 As shown, an embodiment of the present invention provides a testing device for a frequency converter control panel, capable of testing the control panel 1 of a frequency converter. More specifically, the device can test whether the multiple buttons 10 (such as function selection buttons, parameter adjustment buttons, start / stop control buttons, etc.) integrated on the control panel 1, the display screen 11, and the functions of the control panel 1 are normal. The testing device includes a support module 3, a pressing module 4, a photographing mechanism 5, and a host computer 7. The support module 3 is used to fix the control panel 1, the pressing module 4 is used to press the buttons 10, and the photographing mechanism 5 is used to capture actual images of the display screen 11 and send them to the host computer 7. The host computer 7 receives the actual images and compares them with standard images stored internally to determine whether the buttons 10 and the display screen 11 are normal. That is, the testing device of this application can realize automated testing of the frequency converter control panel 1. Compared with the traditional method of manually pressing the buttons 10 and then visually judging whether the control panel 1 is qualified by the display screen 11, the testing efficiency and accuracy of the testing device provided in this application are significantly improved.

[0050] Specifically, the testing equipment includes a frame 2, which includes a horizontally positioned fixed base plate 20. The fixed base plate 20 divides the space within the frame 2 vertically into a testing area 21 and an electrical area 22. The electrical area 22 houses common electrical components such as a controller 8, a power supply, and a solenoid valve assembly. The aforementioned support module 3, pressing module 4, imaging mechanism 5, and host computer 7 are located within the testing area 21. Separating the testing area 21 and the electrical area 22 avoids the heat and potential safety risks generated by the components in the electrical area 22 from adversely affecting the testing accuracy and equipment stability of the testing area 21.

[0051] Key reference Figure 2 The testing device also includes a drive mechanism 6, which can drive the pressing module 4 and the shooting mechanism 5 to reciprocate vertically, so that the pressing module 4 and the shooting mechanism 5 move closer to or further away from the control panel 1, so that the pressing module 4 can press the button 10 on the control panel 1, while ensuring that the shooting mechanism 5 can capture clear images. Specifically, the aforementioned support module 3 is disposed on the fixed base plate 20, and the fixed base plate 20 is also provided with a first fixed plate 25 and a plurality of fixed rods 26 arranged around the support module 3. One end of the fixed rod 26 is fixed to the fixed base plate 20 by screws (not shown in the figure), and the other end is fixed to the first fixed plate 25 by screws, thereby fixing the first fixed plate 25 directly above the support module 3. The drive mechanism 6 includes a first drive member 60 and a movable plate 61. The movable plate 61 is slidably connected to the fixed rods 26, and the first drive member 60 is fixed to the first fixed plate 25 by screws. The first output end 600 of the first drive member 60 passes through the first fixed plate 25 and is fixedly connected to the movable plate 61 by screws. This configuration ultimately enables the first driving component 60 to drive the movable plate 61 to reciprocate along the fixed rod 26, i.e., in the vertical direction. The pressing module 4 and the shooting mechanism 5 are both mounted on the movable plate 61, thereby enabling the first driving component 60 to drive the pressing module 4 and the shooting mechanism 5 to reciprocate in the up-down direction, realizing the pressing and taking pictures functions.

[0052] In this embodiment, two first driving members 60 are provided and symmetrically arranged on both sides of the movable plate 61 to ensure that the movement of the movable plate 61 is more stable.

[0053] Further reference Figure 3 and Figure 4The shooting mechanism 5 includes a camera 50 and a fixing component for securing the camera 50. The camera 50 is fixed to a movable plate 61 by the fixing component, and the movable plate 61 has a camera hole 610 to avoid obstructing the camera 50's shooting. Specifically, the fixing component includes a second connecting plate 52 and two fixing posts 51. The two fixing posts 51 are symmetrically arranged on both sides of the camera hole 610 and fixed to the movable plate 61 with screws. Both ends of the second connecting plate 52 are fixedly connected to the two fixing posts 51 with screws. The camera 50 is fixed to the second connecting plate 52 with screws. It is worth noting that the fixing posts 51 have multiple screw holes evenly distributed along the vertical direction. During installation, only two adjacent screw holes need to be selected to fix the second connecting plate 52. The multiple screw hole design allows users to flexibly adjust the vertical position of the camera 50 by removing screws and reselecting installation spaces. Similarly, the second connecting plate 52 also has multiple screw holes along the horizontal direction. During installation, simply select two adjacent screw holes to fix the camera 50, allowing users to flexibly adjust the horizontal position of the camera 50 by removing screws and reselecting installation slots.

[0054] Optionally, the shooting mechanism 5 also includes a protective cover 53, which is mounted on the camera 50 and fixedly connected to the movable plate 61 with screws to protect the camera 50. (See also...) Figure 2 The first fixed plate 25 is also provided with a first clearance hole 250. The length and width of the first clearance hole 250 are both greater than the length and width of the protective cover 53, so as to avoid interference between the protective cover 53 and the first fixed plate 25 when the movable plate 61 reciprocates.

[0055] Preferably, both the support module 3 and the pressing module 4 are designed to be detachable, so as to facilitate the removal and replacement of the test object and test content. Specifically, the frame 2 is provided with a first mounting chamber 211 and a second mounting chamber 212 located directly above the first mounting chamber 211. The support module 3 is detachably installed in the first mounting chamber 211, and the pressing module 4 is detachably installed in the second mounting chamber 212.

[0056] Reference Figure 3 and Figure 4 Two symmetrical snap-fit ​​pieces 62 are fixed to the bottom of the movable plate 61 by screws, and snap-fit ​​grooves 620 are formed on the snap-fit ​​pieces 62. The pressing module 4 includes a second mounting plate 40, and the two ends of the second mounting plate 40 can be slidably inserted into or pulled out of the snap-fit ​​grooves 620 on both sides to realize the installation and removal of the pressing module 4.

[0057] Furthermore, a second locking assembly 63 is provided on the bottom wall 620a forming the snap-fit ​​groove 620. When the second mounting plate 40 is inserted into the snap-fit ​​groove 620, the second locking assembly 63 can lock the second mounting plate 40 to prevent the pressing module 4 from disengaging from the movable plate 61. Specifically, the second locking assembly 63 includes a fixing nut 630 and a locking bolt 631. The fixing nut 630 is welded to the bottom wall 620a, and the locking bolt 631 is provided through the bottom wall 620a and threadedly connected to the fixing nut 630. The user can adjust the vertical position of the locking bolt 631 by rotating it. A second positioning hole 400 is formed on the second mounting plate 40. When the second mounting plate 40 is inserted into the snap-fit ​​groove 620, the user can rotate the locking bolt 631 so that the head of the locking bolt 631 is inserted into the second positioning hole 400, thereby preventing the second mounting plate 40 from disengaging from the snap-fit ​​groove 620 and fixing the pressing module 4. When the pressing module 4 needs to be disassembled, the user can rotate the locking bolt 631 so that the head of the locking bolt 631 disengages from the second positioning hole 400, at which point the pressing module 4 can be pulled out.

[0058] Optionally, a second chamfer 620b is also formed on the bottom wall 620a to guide the second mounting plate 40 when the pressing module 4 is installed, so that the user can insert the second mounting plate 40 into the snap-fit ​​groove 620.

[0059] Furthermore, a baffle 64 is fixed to the bottom of the movable plate 61 by screws. Two abutment blocks 640 are fixed to the baffle 64 by screws. The two abutment blocks 640 are respectively set to the two snap-fit ​​pieces 62. When the user inserts the second mounting plate 40 of the pressing module 4 into the snap-fit ​​groove 620, the second mounting plate 40 can abut against the abutment blocks 640. At this time, the second positioning hole 400 is coaxial with the locking bolt 631 to ensure that the pressing module 4 is installed in place.

[0060] Preferably, since the snap-fit ​​groove 620 needs to provide fitting space for the sliding of the second mounting plate 40, a certain amount of play needs to be reserved to meet assembly and sliding requirements. To prevent the second mounting plate 40 from wobbling vertically within the snap-fit ​​groove 620 after installation and affecting testing, multiple abutment strips 65 are fixed to the bottom of the movable plate 61 by screws. The abutment strips 65 are made of elastic material, which is rubber in this embodiment. The abutment strips 65 can abut against the second mounting plate 40. In this embodiment, there are two abutment strips 65, which are located on both sides of the camera hole 610 to prevent the pressing module 4 from shaking.

[0061] Similarly, focus on referencing Figure 2 and Figure 5A first connector 23 is fixed on the fixed base plate 20, and the aforementioned support module 3 is detachably connected to the first connector 23. Specifically, the first connector 23 includes a first connecting plate 230 and two support plates 231 symmetrically arranged on both sides of the first connecting plate 230. The aforementioned first mounting chamber 211 is formed by the first connecting plate 230 and the support plates 231 on both sides. A sliding groove 232 is formed on the support plate 231, and the support module 3 includes a first mounting plate 31, the two ends of which are slidably disposed in the sliding grooves 232 of the two support plates 231.

[0062] Furthermore, the end of the sliding groove 232 is also formed with an expanding guide groove 232a. During installation, the user can first make the two ends of the first mounting plate 31 abut against the first chamfer 232a, and then slide the support module 3 onto the two support plates 231. That is, by setting the chamfer 232a, it can play a guiding role when installing the support module 3, making it easier for the user to install the support module 3.

[0063] Optionally, the first connector 23 is further provided with a first locking component 24. When the support module 3 is installed on the first connector 23, the first locking component 24 can restrict the displacement of the first connector 23 in the front-back direction to facilitate testing. Specifically, the first mounting plate 31 is provided with a first positioning hole 310. The first locking component 24 includes a second driving member 240 and a movable block 241. The second output end 240a of the second driving member 240 is fixedly connected to the movable block 241 by screws. The second driving member 240 is arranged vertically and fixed to the support plate 231 by screws, so that the second driving member 240 can drive the movable block 241 to reciprocate in the vertical direction. A positioning pin 242 is fixed on the movable block 241 by screws. When the support module 3 is installed in place, the second driving member 240 can drive the movable block 241 to move downward in the vertical direction, thereby causing the positioning pin 242 to be inserted into the first positioning hole 310, thus preventing the support module 3 from detaching from the support plate 231.

[0064] Preferably, each of the two support plates 231 is provided with a first locking component 24, and the first mounting plate 31 is formed with two first positioning holes 310 corresponding to the positioning pins 242 of the two first locking components 24. This arrangement allows the two first locking components 24 to limit the two sides of the support module 3 after the support module 3 is installed, preventing the support module 3 from tilting and affecting subsequent testing.

[0065] In this embodiment, both the support module 3 and the pressing module 4 are made detachable, allowing operators to replace different support modules 3 and pressing modules 4 as needed to test different models of control panels 1. Specifically, the support module 3 is used to fix the control panel 1, and the pressing module 4 is used to press the buttons 10 on the control panel 1. Different models of control panels 1 have different sizes and button layouts. When users need to test different models of control panels 1, they can replace the corresponding support module 3 and pressing module 4, thereby achieving rapid change of test objects and greatly improving testing efficiency.

[0066] Optionally, a first sensor 91a is provided on the first connecting plate 230, and a second sensor 92a is provided on the baffle 64. The first sensor 91a and the second sensor 92a are used to detect whether the support module 3 and the pressing module 4 are installed in place, respectively. In this embodiment, both the first sensor 91a and the second sensor 92a are proximity sensors.

[0067] Further reference Figure 6 and Figure 7 The support module 3 also includes a carrier box 32, on which a first mounting plate 31 is rotatably mounted. Specifically, the carrier box 32 is a rectangular box with an open top. The first mounting plate 31 is rotatably connected to the first side wall 321 of the carrier box 32 via two hinges 32a, allowing the first mounting plate 31 to rotate to close or open the carrier box 32.

[0068] Optionally, the support module 3 also includes a telescopic bracket 33. One end of the telescopic bracket 33 is fixed to the first mounting plate 31 with screws, and the other end is fixed to the bottom cover 323 of the carrier box 32 with screws. When the first mounting plate 31 is closed, the telescopic bracket 33 is in a retracted state; when the first mounting plate 31 is open, the telescopic bracket 33 is in an extended state to support the first mounting plate 31 and maintain it in the open state. The telescopic bracket 33 is prior art and will not be described in detail here.

[0069] In addition, an L-shaped locking plate 351 with a locking hole is fixed to the bottom of the first mounting plate 31 by screws. A hand-tightening screw 352 is provided on the second side wall 322 of the carrier box 32. When the first mounting plate 31 is closed, the user can lock the first mounting plate 31 by rotating the hand-tightening screw 352 and inserting its head into the locking hole 351a to prevent accidental opening. Similarly, if the user needs to open the first mounting plate 31, they can unlock it by rotating the hand-tightening screw 352 to disengage its head from the locking hole 351a.

[0070] Further reference Figure 8The support module 3 also includes a carrier plate 36 and a quick-change assembly 80. Both the quick-change assembly 80 and the carrier plate 36 are mounted on the first mounting plate 31. The carrier plate 36 is used to fix the control panel 1, while the quick-change assembly 80 is used to electrically connect the control panel 1 to the controller 8, facilitating the device's control of the control panel 1's activation. Simultaneously, both the carrier plate 36 and the quick-change assembly 80 can be floatingly mounted on the first mounting plate 31. The quick-change assembly 80 only becomes electrically connected to the control panel 1 after the pressing module 4 is pressed down and contacts it. This prevents damage to both the control panel 1 and the quick-change assembly 80 due to overpressure.

[0071] In detail, the first mounting plate 31 has multiple sliding holes 311, and linear bearings 312 are embedded and fixed within the sliding holes 311. Multiple guide rods 360 are fixed to the carrier plate 36 by screws. Each guide rod 360 corresponds to one of the linear bearings 312, and the guide rods 360 are slidably inserted into the linear bearings 312, allowing the first mounting plate 31 to reciprocate vertically. Furthermore, the support module 3 includes multiple first elastic elements 313 and limiting screws 314. The first elastic elements 313 abut against the first mounting plate 31 and the carrier plate 36 to support the carrier plate 36. Simultaneously, the limiting screws 314 penetrate the carrier plate 36 and are threadedly fixed to the first mounting plate 31, with the nut 314a of the limiting screw abutting against the side of the carrier plate 36 away from the first elastic elements 313. When no external force is applied, the carrier plate 36 abuts against the nut 314a under the elastic force of the first elastic member 313. This arrangement allows the carrier plate 36 to be suspended on the first mounting plate 31 when no external force is applied. If the force applied above the carrier plate 36 is greater than the force of the first elastic member 313, the carrier plate 36 will move against the action of the first elastic member 313, thus floating the carrier plate 36 and preventing damage to the carrier plate 36 and the control panel 1 mounted on the carrier plate 36.

[0072] It is worth noting that the height at which the carrier plate 36 "floats" is determined by the height of the limiting screw 314 exposed on the first mounting plate 31. Users can rotate the limiting screw 314 to adjust the height at which the carrier plate 36 "floats," i.e. the distance between the carrier plate 36 and the first mounting plate 31, according to actual usage.

[0073] Optionally, in this embodiment, the first elastic member 313 is a spring, and the first mounting plate 31 has a receiving groove 315 corresponding to the plurality of first elastic members 313. One end of the first elastic member 313 can be accommodated in the receiving groove 315 to avoid the first elastic member 313 from deviating.

[0074] Meanwhile, multiple elastic pads 316 are also fixedly installed on the first mounting plate 31. These elastic pads 316 are made of rubber and can effectively prevent the carrier plate 36 from directly contacting the first mounting plate 31 after excessive downward movement. By playing a buffering and isolation role, they can achieve dual protection for the carrier plate 36 and the first mounting plate 31.

[0075] Preferably, four guide rods 360 and four limiting screws 314 are provided and distributed at the four corners of the carrier plate 36 to make the movement of the carrier plate 36 more stable.

[0076] Furthermore, multiple limiting blocks 361 are fixed to the carrier plate 36 by screws. The limiting blocks 361 are L-shaped and distributed at the four corners of the control panel 1. The four limiting blocks 361 define a limiting groove 30 to fix the control panel 1. In addition, several clearance holes 362 are formed on the carrier plate 36. When the control panel 1 is placed on the carrier plate 36, the protruding electronic components on the control panel 1 can be accommodated in the corresponding clearance holes 362 to avoid damage to the control panel 1. In addition, two positioning posts 363 are fixed on the carrier plate 36. When the control panel 1 is placed in the four limiting blocks 361, the positioning posts 363 can be inserted into the fixing screw holes of the control panel 1 to play an auxiliary positioning role.

[0077] It is worth noting that the carrier plate 36 also has a detection hole 364 and a connector hole 365. The connector hole 365 is used to avoid the quick-change assembly 80 on the first mounting plate 31. The quick-change assembly 80 can at least partially pass through the connector hole 365 and make electrical contact with the control panel 1. The first mounting plate 31 is also provided with a photoelectric sensor 317, which can pass through the detection hole 364 to detect whether the control panel 1 is placed on the carrier plate 36.

[0078] Preferably, in order to avoid collision between the photoelectric sensor 317 and the carrier plate 36, a mounting groove 318 is provided on the first mounting plate 31, and the photoelectric sensor 317 is accommodated in the mounting groove 318 and does not protrude from the upper surface of the first mounting plate 31.

[0079] Furthermore, to adapt to the testing requirements of different models of control panels 1, the inverter control panel testing equipment provided in this embodiment includes multiple support modules 3 of different models. Specifically, different models of control panels 1 differ in their external dimensions and button layout. In this embodiment, the support modules 3 of different models are adapted mainly through the size difference of the upper limit groove 30 on the carrier plate 36—that is, by adjusting the fixed position of multiple limit blocks 361 on the carrier plate 36, the specifications of the limit groove 30 are matched with the external shape of different control panels 1.

[0080] Further reference Figures 9 to 12The quick-change assembly 80 is also floatingly mounted on the first mounting plate 31 to prevent damage to the quick-change assembly 80. Specifically, the quick-change assembly 80 includes a fixing head 800 and a mounting base 801. The fixing head 800 is fixed to the mounting base 801 by screws, and the fixing head 800 is formed by injection molding and has several female pins 802 fixed thereon. The mounting base 801 is floatingly mounted on the first mounting plate 31, thus making the quick-change assembly 80 as a whole floating.

[0081] In detail, the mounting base 801 is integrally formed and includes a mounting part 803 and a fixing part 804. Floating screws 805 are provided at the four corners of the mounting part 803, penetrating the mounting part 803. The first mounting plate 31 has threaded holes 319 corresponding to the four floating screws 805, and the floating screws 805 are threadedly connected to the corresponding threaded holes 319. Simultaneously, a second elastic element 806 is fitted onto the floating screws 805. One end of the second elastic element 806 abuts against the first mounting plate 31, and the other end abuts against the mounting part 803, thereby allowing the mounting base 801 to float on the first mounting plate 31. Similarly, when there is no external force, the mounting part 803 abuts against the nut portion 805a of the floating screw 805 under the action of the second elastic element 806. When an external force is applied, the mounting part 803 can overcome the action of the second elastic element 806 and move, realizing the floating design of the quick-change assembly 80.

[0082] Preferably, a floating groove 331 is formed on the first mounting plate 31, and the mounting portion 803 is accommodated within the floating groove 331, with the upper surface of the mounting portion 803 not protruding beyond the upper surface of the first mounting plate 31. A screw clearance groove 807 is formed on the mounting portion 803, and the nut portion 805a of the floating screw 805 can be accommodated within the screw clearance groove 807, with the upper surface of the nut portion 805a not protruding beyond the upper surface of the mounting portion 803 when there is no external force. This design can prevent the mounting portion 803 from interfering with the aforementioned carrier plate 36.

[0083] Furthermore, a first fixing groove 806a is formed on the bottom wall of the floating groove 331, and a second fixing groove 806b is formed on the mounting part 803. The two ends of the second elastic member 806 are respectively accommodated in the first fixing groove 806a and the second fixing groove 806b, so that a longer spring can be selected for the second elastic member 806, thereby improving the strength and service life of the second elastic member 806.

[0084] Preferably, the mounting portion 803 also has a plurality of first guide holes 808a, and the bottom wall of the floating groove 331 has a plurality of second guide holes 808b corresponding to the plurality of first guide holes 808a. The first guide holes 808a and the corresponding second guide holes 808b are coaxially arranged. The quick-change assembly 80 also includes a guide rod (not shown in the figure), one end of which is fixed in the second guide hole 808b, and the other end slides through the first guide hole 808a, thereby enabling the mounting portion 803 to move along the guide rod and improving the stability of the quick-change assembly 80 when floating.

[0085] Furthermore, the fixing part 804 is used to fix the ribbon cable 802a of the female connector pin 802, and the quick-change assembly 80 also includes a second fixing plate 809. The second fixing plate 809 is fixedly connected to the fixing part 804 by a stud 809a and is also used to fix the ribbon cable 802a. That is, during installation, the ribbon cable 802a passes through the fixing part 804 and the second fixing plate 809 in sequence, and then the fixing head 800 is fixed to the mounting base 801 by screws. At this time, the second fixing plate 809 and the fixing part 804 can provide a certain support for the ribbon cable 802a, preventing damage to the ribbon cable 802a and the female connector pin 802.

[0086] Preferably, a cable clearance hole 331a is also formed on the bottom wall of the floating groove 331 to allow clearance between the fixing part 804 and the second fixing plate 809. Furthermore, a mounting clearance groove 803a is formed on the mounting part 803, within which the first part 800a of the fixing head 800 can be accommodated, and the upper surface of the first part 800a does not protrude beyond the upper surface of the mounting part 803. The second part 800b of the fixing head 800 can pass through the aforementioned insertion hole 365 and make electrical contact with the terminals integrated on the control panel 1.

[0087] Further reference Figures 13 to 16The pressing module 4 also includes a third fixing plate 41 and multiple connecting rods 42. One end of each connecting rod 42 is fixed to the second mounting plate 40 by screws, and the other end is fixed to the third fixing plate 41 by screws. The pressing module 4 also includes multiple pressing elements 43 and a third connecting plate 44 for fixing the pressing elements 43. In this embodiment, the pressing element 43 is a pen-shaped cylinder. The pressing element 43 passes through the third connecting plate 44 and is fixed to the third connecting plate 44 by screws. A test clearance hole 410 is formed on the third fixing plate 41, and both ends of the third connecting plate 44 are fixed to the two sides of the test clearance hole 410 by screws. When the pressing module 4 is installed in place, the multiple pressing elements 43 correspond one-to-one with the multiple buttons 10 in the vertical direction, and the pressing elements 43 can pass through the test clearance hole 410 and press on the corresponding button 10. In addition, a second camera hole 401 is formed on the second mounting plate 40, and the shooting range of the camera 50 above can pass through the camera hole 610, the second camera hole 401 and the test avoidance hole 410 in sequence and capture images of the display screen 11 of the control panel 1.

[0088] It is worth noting that, in order to adapt to the testing requirements of different models of control panels 1, the inverter control panel testing equipment provided in this embodiment includes multiple different models of pressing modules 4. Specifically, the multiple pressing parts 43 on the pressing modules 4 of different models are arranged in different positions on the third connecting plate 44 to correspond to different models of control panels 1.

[0089] Furthermore, the bottom of the third fixing plate 41 is fixed with screws to a plurality of first abutment posts 411 and a plurality of second abutment posts 412, which are used to press the first mounting plate 31 and the carrier plate 34 respectively. In addition, the bottom of the third fixing plate 41 is also fixed with screws to a pressing positioning post 414, and the aforementioned first mounting plate 31 is provided with a corresponding pressing guide hole 415. When the first driving member 60 drives the pressing module 4 to move toward the support module 3, the pressing positioning post 414 can be inserted into the pressing guide hole 415 to play a positioning and guiding role.

[0090] In addition, multiple panel pressing parts 416 are fixed to the bottom of the third fixing plate 41 by screws. The panel pressing parts 416 are made of rubber and can be attached to and abut against the outer shell 13 of the control panel 1 to exert downward pressing force on the control panel 1. It is worth noting that since the outer dimensions of control panels 1 of different sizes are different, the outer shell dimensions are also different, and the shape and position arrangement of the panel pressing parts 416 on different models of pressing modules 4 are also different. Specifically, it is sufficient to be able to attach to and press the corresponding model of control panel 1.

[0091] It is worth noting that, since both the support module 3 and the pressing module 4 adopt a detachable design, to ensure convenient circuit connection, the support module 3 is also equipped with a first connector male terminal 90 that is electrically connected to the controller 8. Correspondingly, the first connecting plate 230 is equipped with a first connector female terminal 91, and the quick-change assembly 80 is electrically connected to the first connector male terminal 90. When the support module 3 is installed in place, the first connector male terminal 90 and the first connector female terminal 91 automatically plug in, thereby enabling the quick-change assembly 80 on the support module 3 to conduct circuits with the controller 8 inside the device.

[0092] Similarly, the pressing module 4 is provided with a second connector male terminal 92, and the baffle 64 is provided with a second connector female terminal 93 that is electrically connected to the controller 8, and the pressing member 43 is electrically connected to the second connector male terminal 92. When the pressing module 4 is installed in place, the second connector male terminal 92 and the second connector female terminal 93 are precisely mated and electrically connected, ensuring that the controller 8 can stably control the action of the pressing member 43.

[0093] As a preferred option, both the first connector and the second connector in this embodiment are heavy-duty connectors, which have high reliability and strong load-bearing capacity, and can adapt to the circuit connection requirements of the equipment under complex working conditions, further improving the stability and durability of the overall structure.

[0094] In addition, this application also provides a testing method for the aforementioned inverter control panel testing equipment:

[0095] Select the corresponding model of support module 3 and pressing module 4 on control panel 1, which needs to be tested;

[0096] Place the control panel 1 inside the limit slot 30;

[0097] The support module 3 and the pressing module 4 are respectively installed in the first mounting chamber 211 and the second mounting chamber 212;

[0098] When the device is started, the controller 8 controls multiple pressing parts 43 to press the corresponding buttons 10 in sequence. After each pressing part 43 presses the button 10, the controller 8 controls the shooting mechanism 5 to capture the actual image on the display screen 11 and transmit it to the host computer 7.

[0099] The host computer 7 compares multiple actual images with multiple corresponding standard images stored internally. If one or more actual images do not match the corresponding standard images, they are judged as unqualified; if they all match, they are judged as qualified.

[0100] The usage procedure for the testing equipment in this application is as follows:

[0101] First, select the corresponding support module 3 and pressing module 4 according to the model of the control panel 1 of the inverter to be tested. Slide both ends of the first mounting plate 31 of the support module 3 into the sliding groove 232 along the guide groove 232a of the support plate 231 of the first plug-in member 23 until it abuts against the abutment block 640. After the first sensor 91a detects that the support module 3 is installed in place, the second drive member 240 drives the positioning pin 242 to insert into the first positioning hole 310 of the first mounting plate 31 to complete the locking. Insert the second mounting plate 40 of the pressing module 4 into the snap-fit ​​groove 620 of the snap-fit ​​member 62 below the movable plate 61 until it abuts against the abutment block 640. At this time, the second positioning hole 400 is coaxial with the locking bolt 631. Rotate the locking bolt 631 so that its head is inserted into the second positioning hole 400 to fix it. The second sensor 92a confirms that the pressing module 4 is installed in place.

[0102] Next, the user starts the device. After starting the device, the host computer 7 issues a command, and the controller 8 controls the first drive component 60 of the drive mechanism 6 to push the movable plate 61 vertically downward along the fixed rod 26, causing the pressing module 4 and the shooting mechanism 5 to move closer to the control panel 1. The first abutting post 411 and the second abutting post 412 of the pressing module 4 press the first mounting plate 31 and the carrier plate 36 respectively, causing the carrier plate 36 to descend against the elastic force of the first elastic member 313. At the same time, the panel pressing component 416 presses the control panel 1, causing the control panel 1 to move downward, thereby allowing the female connector pin 802 of the quick-change component 80 to be plugged into the power interface 12 of the control panel 1 for electrical connection. Then, the controller 8 starts the control panel 1. Subsequently, the pressing component 43 presses the multiple buttons 10 on the panel in sequence, and the camera 50 of the shooting mechanism 5 captures the actual image on the display screen 11. It is worth noting that after each button 10 is pressed, the camera 50 captures an image and transmits the image to the host computer 7. Then, the pressing component 43 presses another button 10.

[0103] The host computer 7 compares the received actual image with the internally stored standard image to determine whether the button 10 function and the display screen 11 are normal, and outputs the test results. After the test is completed, the first driving component 60 drives the movable plate 61 to rise and reset, the quick-change component 80 disengages from the control panel 1 under the action of the second elastic component 806, and the carrier plate 36 resets under the action of the first elastic component 313. The first mounting plate 31 is opened to remove the panel that has been tested. To test the next panel, the above steps are repeated.

[0104] The above embodiments merely illustrate several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A frequency converter control panel detection device for detecting a control panel (1) which is integrally provided with a plurality of keys (10) and a display screen (11), characterized in that, The frequency converter control panel detection device comprises: a rack (2) provided with a first mounting chamber (211) and a second mounting chamber (212) located directly above the first mounting chamber (211); a plurality of support modules (3) of different models, which are detachably mounted in the first mounting chamber (211), the support modules (3) of different models being adapted to the control panels (1) of different models, and the support modules (3) being provided with limiting grooves (30) for fixing the control panels (1); a plurality of pressing modules (4) of different models, which are detachably mounted in the second mounting chamber (212), the pressing modules (4) of different models being adapted to the control panels (1) of different models, and the pressing modules (4) being provided with a plurality of pressing pieces (43) capable of pressing the keys (10); a shooting mechanism (5) configured to shoot actual images of the display screens (11); a host computer (7) electrically connected to the shooting mechanism (5) to receive the actual images and compare them with standard images; a controller (8) electrically connected to the host computer (7), the pressing pieces (43), and the shooting mechanism (5).

2. The frequency inverter control panel detection device of claim 1, wherein, The frequency converter control panel detection device further comprises a driving mechanism (6) configured to drive the pressing modules (4) to move closer to or farther away from the shooting mechanism (5) and the control panels (1).

3. The frequency inverter control panel detection device of claim 1, wherein, The rack (2) comprises a fixed base plate (20) that separates the inside of the rack (2) into a test area (21) and an electrical area (22); the support modules (3), the pressing modules (4), the shooting mechanism (5), and the driving mechanism (6) are all arranged in the test area (21), and the controller (8) and a power supply component are arranged in the electrical area (22).

4. The frequency inverter control panel detection device of claim 3, wherein, The fixed base plate (20) is fixed with a first plug-in piece (23) comprising a first connecting plate (230) and two support plates (231) symmetrically arranged on the sides, the first mounting chamber (211) being surrounded by the first connecting plate (230) and the two support plates (231) on the sides, and the support modules (3) being at least partially slidably arranged on the support plates (231).

5. The frequency inverter control panel detection device of claim 4, wherein, The support plates (231) are provided with sliding grooves (232), and both ends of the first mounting plate (31) of the support modules (3) are slidably embedded in the two sliding grooves (232).

6. The frequency inverter control panel detection device of claim 3, wherein, The fixed base plate (20) is further provided with a first locking component (24) configured to limit the support modules (3) when the support modules (3) are mounted on the rack (2).

7. The frequency inverter control panel detection device of claim 2, wherein, The pressing modules (4) are detachably connected to the driving mechanism (6).

8. The frequency inverter control panel detection device of claim 7, wherein, The driving mechanism (6) comprises a first driving member (60), a movable plate (61) and a fixing assembly, the fixing assembly comprises a plurality of fixing rods (26) fixed to the fixing base plate (20) and a first fixing plate (25) fixed to the top ends of the fixing rods (26); the movable plate (61) is in sliding connection with the fixing rods (26), the first driving member (60) is fixed to the first fixing plate (25), the first output end (600) of the first driving member (60) is fixed to the movable plate (61) through the first fixing plate (25), and the pressing module (4) is detachably connected with the movable plate (61).

9. The frequency inverter control panel detection device of claim 8, wherein, Two symmetrical clamping pieces (62) are fixed below the movable plate (61), clamping grooves (620) are formed in the clamping pieces (62), and the two ends of the second mounting plate (40) of the pressing module (4) are respectively slidably embedded in the two clamping grooves (620).

10. A detection method applied to the variable frequency converter control panel detection device of any one of claims 1-9, characterized in that, according to the control panel (1) to be tested, selecting the support module (3) and the pressing module (4) corresponding to the model; placing the control panel (1) in the limiting groove (30); installing the support module (3) and the pressing module (4) in the first mounting chamber (211) and the second mounting chamber (212) respectively; starting the device, the controller (8) controls a plurality of pressing members (43) to press corresponding keys (10) in turn, after each pressing member (43) presses the key (10), the controller (8) controls the shooting mechanism (5) to shoot the actual image of the display screen (11) and transmits it to the upper computer (7); the upper computer (7) compares a plurality of actual images with a plurality of corresponding standard images stored in the internal storage, if one or more actual images are inconsistent with the corresponding standard images, it is judged to be unqualified; if all are consistent, it is judged to be qualified.

Images