A vision-based inspection device for inverter assembly

Abstract

This invention discloses a vision-based inspection device for inverter assembly, relating to the field of inverter assembly inspection technology. It includes an inspection mechanism comprising a platform on which a conveying assembly, a lifting assembly, a clamping assembly, and a three-axis robot are mounted. The conveying assembly is located on both sides of the lifting assembly, and the clamping assembly is located on one side of the conveying assembly. A vision inspection module is mounted on the three-axis robot, and a buffer limiting component is mounted on the platform. An adjustment mechanism is also mounted on the lifting assembly. This invention, through the cooperation of the clamping assembly and the fitting mechanism, can fit snugly against the curved / irregular side of the inverter during clamping, preventing localized force concentration or suspension. The clamping is stable, with a uniform force distribution that minimizes shaking. The adjustment mechanism, in cooperation with the lifting assembly, can adjust and initially fix the inverter, facilitating more accurate fitting and clamping of the inverter by the subsequent fitting mechanism.

Description

Technical Field

[0001] This invention relates to the field of inverter assembly inspection technology, and in particular to an inverter assembly inspection device based on vision inspection. Background Technology

[0002] An inverter is a power electronic device that converts direct current (DC) into alternating current (AC). Its core components include an inverter bridge, control logic circuits, and filter circuits. Its core function is to provide regulated and frequency-converted power to AC loads. It is widely used in off-grid / grid-connected photovoltaic systems, new energy vehicles, emergency power supplies, and other fields. After the inverter is assembled, a visual inspection device is needed to inspect it to ensure assembly accuracy and product reliability.

[0003] However, in practical applications, there are still some unresolved issues. The following are some common problems of inspection devices for inverter assembly based on vision inspection: In most cases, the inverters delivered into the device need to be clamped and limited during inspection. Usually, clamping plates with planar structures are used to clamp the inverters. Due to the irregularity of the sides of the inverters, the clamping cannot fit the curved / irregular sides of the inverters, resulting in localized force concentration or suspension, and unstable clamping. Uneven distribution of clamping force causes shaking, affecting the accuracy of inspection. Summary of the Invention

[0004] In view of the problems existing in the above-mentioned visual inspection-based inverter assembly inspection devices, the present invention is proposed.

[0005] Therefore, the problem to be solved by the present invention is how to solve the problem of unstable clamping when using a clamping plate with a planar structure to clamp the inverter. This is because the inverter has irregular sides and cannot fit the curved / irregular side of the inverter during clamping, resulting in localized force concentration or suspension.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a detection device for inverter assembly based on vision detection, comprising,

[0007] The testing mechanism includes a platform on which a conveying assembly, a lifting assembly, a clamping assembly, and a three-axis robot are respectively mounted. The conveying assembly is located on both sides of the lifting assembly, and the clamping assembly is located on one side of the conveying assembly. A vision inspection module is mounted on the three-axis robot, and a buffer limiting component is mounted on the platform.

[0008] An adjustment mechanism, mounted on a lifting assembly, includes a rotating housing that rotates on the lifting assembly. A rubber ring is fixed inside the rotating housing. A drive fixing component is mounted on the lifting assembly and disposed on the rotating housing. A piston and a spring are respectively installed inside the drive fixing component, with both ends of the spring fixed to the piston and the drive fixing component, respectively.

[0009] The fitting mechanism, mounted on the clamping assembly, includes a mounting bracket and a liquid bladder fixed on the clamping assembly. A fitting component is fixed on the mounting bracket. One end of the fitting component is connected to a valve component. A guide plate is fixed to the upper end of the valve component. A guide hole is provided on the guide plate. A limit adjustment component is mounted on the mounting bracket and cooperates with the guide plate. A flexible hose connects the liquid bladder and the valve component.

[0010] As a preferred embodiment of the inspection device for inverter assembly based on vision inspection described in this invention, the lifting assembly includes a fixed plate fixed to the platform, a cylinder is fixed on the fixed plate, a support plate is fixed to the output end of the cylinder, a guide sleeve is fixed on the fixed plate, a guide rod slides inside the guide sleeve, the upper end of the guide rod is fixed to the bottom of the support plate, and a reinforcing plate is fixed to the lower end of the guide rod. The rotating shell is rotatably connected to the top of the support plate, and the driving fixing component is installed on the fixed plate and the rotating shell.

[0011] As a preferred embodiment of the inspection device for inverter assembly based on vision inspection described in this invention, the clamping assembly includes a mounting plate fixed on the platform, a cylinder two fixed on one side of the mounting plate, a movable plate fixed at the output end of the cylinder two, a guide sleeve two fixed on the mounting plate, a guide rod two sliding inside the guide sleeve two, one end of which is fixed to one side of the movable plate, and the mounting bracket fixed to one side of the movable plate.

[0012] As a preferred embodiment of the detection device for inverter assembly based on vision detection described in this invention, the drive fixing component includes an air cylinder fixed to a fixing plate, a rotating tube slidably connected to the upper end of the air cylinder, the upper end of the rotating tube penetrating a support plate and fixed to the bottom of the rotating shell, a guide groove being formed on the surface of the rotating tube, a guide post being fixed to the inner wall of the air cylinder and having one end sliding in the guide groove, the lower end of the rotating tube penetrating to the bottom of a piston and being fixed with a limit ring, the piston sliding on the inner wall of the air cylinder, and the two ends of the spring being fixed to the surface of the piston and the inner wall of the air cylinder, respectively.

[0013] As a preferred embodiment of the inspection device for inverter assembly based on vision inspection described in this invention, the bonding component includes a cylinder fixed on a mounting bracket, a piston slidably inside the cylinder, a round rod slidably at one end of the cylinder, one end of which penetrates into the inner cavity of the cylinder and is fixed to the surface of the piston 2, and the other end of which is embedded with a ball bearing, a spring sheet 1 fixed between the surface of the piston 2 and the inner wall of the cylinder, a connecting hole is opened at one end of the cylinder, a limiting groove is opened on the outer surface of the round rod, a limiting block is fixed on the cylinder and slides within the limiting groove.

[0014] As a preferred embodiment of the inspection device for inverter assembly based on vision inspection described in this invention, the valve component includes a valve shell fixed to one end of a cylinder, a valve block sliding on the inner wall of the valve shell, a valve stem sliding on the valve shell, the lower end of which penetrates into the inner cavity of the valve shell and is fixed to the top of the valve block, the upper end of which is fixed to the surface of the guide plate, and a second spring is sleeved on the upper surface of the valve stem, and its two ends are respectively fixed to the surface of the guide plate and the surface of the valve block.

[0015] As a preferred embodiment of the detection device for inverter assembly based on vision detection described in this invention, the limiting adjustment component includes a sliding sleeve sleeved on the mounting bracket, a trigger rod fixed on the sliding sleeve, and a guide plate sleeved on its surface. A slot is formed on the inner surface of the sliding sleeve, and a groove is formed in the mounting bracket. A locking block slides in the groove and cooperates with the slot.

[0016] As a preferred embodiment of the detection device for inverter assembly based on vision detection described in this invention, the sliding sleeve has a handle that slides on it and its two ends are fixed to the bottom of the locking block. Springs are sleeved on the surfaces of both ends of the handle and their two ends are fixed to the surface of the locking block and the inner wall of the groove, respectively. A spring piece is fixed between the surface of the sliding sleeve and the surface of the mounting bracket. A square groove is opened in the inner wall of the groove. A square block is fixed on the locking block and slides in the square groove.

[0017] As a preferred embodiment of the vision-based inspection device for inverter assembly described in this invention, the cylinder is equipped with a reinforcing member that cooperates with a trigger rod. The member includes a groove within the cylinder, in which a drive plate and a movable block slide. The drive plate and the movable block cooperate with each other. A pressure block is fixed to the lower end of the movable block, and a rubber pad is fixed to the bottom of the pressure block. A short rod is fixed to one end of the drive plate outside the cylinder. A trigger block rotates on the short rod. A torsion spring is sleeved on the surface of the short rod, with its two ends fixed to the surface of the short rod and the surface of the trigger block, respectively. A support rod is fixed to one end of the drive plate and contacts the surface of the trigger block.

[0018] As a preferred embodiment of the inspection device for inverter assembly based on vision inspection described in this invention, the following features are provided: a sliding groove is provided in the tank, a slider is fixed on the drive plate and slides in the sliding groove, a spring is fixed between the surface of the slider and the inner wall of the sliding groove, a positioning groove is provided in the tank, a positioning block is fixed on the movable block and slides in the positioning groove, and a spring is fixed between the surface of the positioning block and the inner wall of the positioning groove.

[0019] The beneficial effects of this invention are as follows: with the cooperation of the clamping component, the bonding mechanism can fit the curved / irregular side of the inverter during clamping, without local force concentration or suspension, ensuring stable clamping and uniform force distribution that is not prone to shaking. With the cooperation of the lifting component, the adjustment mechanism can adjust and initially fix the inverter, facilitating more accurate bonding and clamping of the subsequent bonding mechanism. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. 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.

[0021] Figure 1 This is a three-dimensional structural diagram of a vision-based inspection device for inverter assembly.

[0022] Figure 2 A partial three-dimensional structure of a vision-based inspection device for inverter assembly. Figure 1 .

[0023] Figure 3 A partial three-dimensional structure of a vision-based inspection device for inverter assembly. Figure 2 .

[0024] Figure 4 A partial three-dimensional structure of a vision-based inspection device for inverter assembly. Figure 3 .

[0025] Figure 5 This is a partial sectional perspective view of the support plate and air cylinder of the inspection device for inverter assembly based on vision inspection.

[0026] Figure 6 Inspection device for inverter assembly based on vision inspection Figure 5 Enlarged view of region A in the middle.

[0027] Figure 7 Inspection device for inverter assembly based on vision inspection Figure 5 Enlarged view of region B in the middle.

[0028] Figure 8 This is a three-dimensional structural diagram of the bonding mechanism of a vision-based inspection device for inverter assembly.

[0029] Figure 9 Inspection device for inverter assembly based on vision inspection Figure 8 Enlarged view of region C.

[0030] Figure 10 Inspection device for inverter assembly based on vision inspection Figure 9 Enlarged view of region D in the middle.

[0031] Figure 11 This is a partial sectional perspective view of the mounting bracket for a vision-based inspection device used in inverter assembly.

[0032] Figure 12 Inspection device for inverter assembly based on vision inspection Figure 11 Enlarged view of region E in the middle.

[0033] Figure 13 Inspection device for inverter assembly based on vision inspection Figure 12 Enlarged view of the F region.

[0034] Figure 14 This is a cross-sectional plan view of the liquid bladder and cylinder of the inspection device for inverter assembly based on vision inspection.

[0035] Figure 15 Inspection device for inverter assembly based on vision inspection Figure 14 Enlarged view of the G region.

[0036] Figure 16 Inspection device for inverter assembly based on vision inspection Figure 14 Enlarged view of region H in the middle.

[0037] Figure 17 This is a partial cross-sectional perspective view of a cylinder used for a vision-based inspection device in inverter assembly.

[0038] Figure 18 A three-dimensional view of the cylinder and connecting block of a vision-based inspection device for inverter assembly.

[0039] Figure 19 This is a three-dimensional view of the buffer limiting component structure of a vision-based inspection device for inverter assembly.

[0040] In the diagram: 1. Detection mechanism; 11. Platform; 12. Conveying assembly; 13. Lifting assembly; 14. Clamping assembly; 15. Three-axis robot; 16. Vision inspection module; 17. Photoelectric sensor; 18. Buffer limit component; 19. Chassis; 2. Adjustment mechanism; 21. Rotating shell; 22. Rubber ring; 23. Drive fixing component; 24. Piston one; 25. Spring one; 3. Fitting mechanism; 31. Mounting bracket; 32. Fitting component; 33. Valve component; 34. Guide plate; 35. Guide hole; 36. Limit adjustment component; 37. Liquid bladder; 38. 39. Hose; 13-1. Reinforcing component; 13-2. Fixing plate; 13-3. Cylinder 1; 13-4. Support plate; 13-5. Guide sleeve 1; 13-6. Guide rod 1; 14-7. Reinforcing plate; 14-1. Mounting plate; 14-2. Cylinder 2; 14-3. Moving plate; 14-4. Guide sleeve 2; 14-5. Guide rod 2; 23-1. Air cylinder; 23-2. Rotary pipe; 23-3. Guide groove; 23-4. Guide post; 23-5. Limiting ring; 32-1. Cylinder; 32-2. Piston 2; 32-3. Round rod; 32-4. Ball bearing; 32-5, Spring 1; 32-6, Connecting Hole; 32-7, Limiting Groove; 32-8, Limiting Block; 33-1, Valve Housing; 33-2, Valve Block; 33-3, Valve Stem; 33-4, Spring 2; 36-1, Sliding Sleeve; 36-2, Trigger Rod; 36-3, Slot; 36-4, Groove; 36-5, Slot Block; 36-6, Square Block; 36-7, Handle; 36-8, Spring 3; 36-9, Spring 2; 36-10, Square Groove; 39-1, Groove Body; 39-2, Drive Plate; 39-3, Movable Block; 39-4. Pressure block; 39-5, rubber pad; 39-6, short rod; 39-7, trigger block; 39-8, torsion spring one; 39-9, support rod; 39-10, slide groove; 39-11, slider; 39-12, spring four; 39-13, positioning groove; 39-14, positioning block; 39-15, spring five; 18-1, cylinder three; 18-2, connecting block; 18-3, damper; 18-4, crossbar; 18-5, rotating block; 18-6, fixing rod; 18-7, roller; 18-8, torsion spring two; 18-9, limit rod. Detailed Implementation

[0041] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0042] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0043] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments. Example 1

[0044] Reference Figures 1 to 8 This is the first embodiment of the present invention. This embodiment provides a visual inspection device for inverter assembly. The visual inspection device for inverter assembly includes an inspection mechanism 1, an adjustment mechanism 2, and a bonding mechanism 3. The inspection mechanism 1 can transport and visually inspect the inverter. The bonding mechanism 3, in cooperation with the clamping component 14, can bond to the curved / irregular side of the inverter during clamping, ensuring stable clamping and uniform distribution of clamping force, which is not prone to shaking. The adjustment mechanism 2, in cooperation with the lifting component 13, can adjust and initially fix the inverter by adsorption.

[0045] Specifically, the testing mechanism 1 includes a platform 11, on which a conveying assembly 12, a lifting assembly 13, a clamping assembly 14 and a three-axis robot 15 are respectively installed. The conveying assembly 12 is located on both sides of the lifting assembly 13, the clamping assembly 14 is located on one side of the conveying assembly 12, the three-axis robot 15 is equipped with a vision inspection module 16, and the platform 11 is equipped with a buffer limiter 18.

[0046] The conveying assembly 12 is a triple-speed chain conveyor line, adopting a dual-chain asynchronous drive design, equipped with a variable frequency speed control motor (2-18m / min stepless speed regulation), and integrated anti-static guide bars and guide rails to ensure the transmission stability of the inverter. The lifting assembly 13 can lift the inverter conveyed to the testing device and remove it from the transmission of the conveying assembly 12. The three-axis robot 15 is a servo three-axis module with XYZ axis travel of 850×800×300mm, repeatability of X / Y axis ±5μm, Z axis ±2μm, and integrated torque feedback function (0-10N adjustable).

[0047] The clamping assembly 14 consists of two sets, which can clamp the lifted inverter to ensure its stability. The vision inspection module 16 is equipped with dual industrial cameras (20-megapixel global shutter CMOS + 5-megapixel linear array CCD), a four-channel ring light source (RGBW independently controllable), and an image processing unit integrating deep learning algorithms (supporting TensorRT acceleration). All of these are existing technologies, and the working principle of this part is also existing technology, which can be clearly understood by those skilled in the art, so it will not be described in detail here. By setting the buffer limiter 18, the inverter delivered into the inspection device can be blocked and buffered, thereby achieving initial limit, which facilitates the subsequent lifting of the inverter to be inspected by the lifting assembly 13.

[0048] Specifically, the adjustment mechanism 2 is installed on the lifting assembly 13. Four adjustment mechanisms 2 are provided on one lifting assembly 13, including a rotating shell 21 that rotates on the lifting assembly 13. The rotating shell 21 provides a position for the installation of the rubber ring 22. The rubber ring 22 is fixed inside the rotating shell 21. A drive fixing component 23 is installed on the lifting assembly 13 and is set on the rotating shell 21. A piston 24 and a spring 25 are respectively installed inside the drive fixing component 23. The two ends of the spring 25 are fixed to the piston 24 and the drive fixing component 23 respectively.

[0049] By setting the rubber ring 22, it plays a buffering and supporting role when it contacts the bottom of the inverter as the lifting component 13 runs, protecting the inverter during the lifting contact process. As the lifting component 13 runs, the rotating shell 21 can be rotated under the action of the drive fixing component 23, which in turn makes the rubber ring 22 rotate, acting on the inverter to ensure that the side of the inverter is in contact with the buffer limiting component 18. This facilitates the subsequent clamping of both sides. During the clamping component 14 driving the contacting mechanism 3, the adjusted contacting component 32 is more accurately attached to the inverter for clamping and fixing, avoiding the use of the usual vertical clamping plate to directly clamp the irregular side of the inverter, thus improving the stability of the clamping.

[0050] As the lifting assembly 13 continues to operate, it continues to act on the drive fixing component 23, causing the piston 24 in the drive fixing component 23 to move upward. This draws the gas in the space composed of the rubber ring 22, the rotating shell 21, and the inverter into the drive fixing component 23. With the gas volume remaining constant, the volume of the space increases, allowing the rubber ring 22 to act as a suction cup and seal. During this process, the rubber ring 22 and the rotating shell 21 no longer rotate. The rubber ring 22 serves to initially fix the inverter that needs to be tested, and its suction does not affect the pushing and clamping effect of the clamping assembly 14 drive fitting component 32 on the inverter.

[0051] Specifically, the bonding mechanism 3 is installed on the clamping assembly 14 and includes a mounting bracket 31 and a liquid bladder 37 fixed on the clamping assembly 14. A bonding component 32 is fixed on the mounting bracket 31. One end of the bonding component 32 is connected to a valve component 33. A guide plate 34 is fixed on the upper end of the valve component 33. A guide hole 35 is opened on the guide plate 34. A limit adjustment component 36 is installed on the mounting bracket 31 and cooperates with the guide plate 34. A hose 38 is connected between the liquid bladder 37 and the valve component 33.

[0052] The liquid bladder 37, the fitting 32, the valve 33, and the hose 38 are all filled with liquid. This liquid is almost incompressible under pressure, which is existing technology. The working principle of this part is also existing technology, which can be clearly understood by those skilled in the art, and will not be described in detail here. Multiple sets of fittings 32 are provided on a mounting bracket 31. The number of hoses 38 and valves 33 is the same as the number of fittings 32. The valves 33 and the liquid bladder 37 are kept in communication through the hoses 38.

[0053] The liquid bladder 37 is made of expandable rubber material, which is existing technology. The working principle of this part is also existing technology, which can be clearly understood by those skilled in the art, and will not be described in detail here. When the liquid in the bonding member 32 is pressed into it through the valve member 33 and the hose 38, it can expand to receive the liquid. After the valve member 33 is opened and the bonding member 32 is not obstructed, the liquid can be sent back into the bonding member 32 due to its retraction characteristic. The guide hole 35 is divided into three parts. When the trigger rod 36-2 on the limit adjustment member 36 is in the first part, the valve member 33 can be opened under the pressure of the liquid in the bonding member 32 without causing obstruction.

[0054] When the trigger rod 36-2 on the limit adjustment member 36 is in the second part, the valve member 33 cannot be opened under the pressure of the liquid in the fitting member 32, which will cause obstruction. When the trigger rod 36-2 on the limit adjustment member 36 moves from the second part to the third part, it can open the valve members 33 on multiple sets of fitting members 32 on one side. The liquid in the liquid bladder 37 is pressed into the fitting member 32 to reset it. The limit adjustment member 36 can control the valve member 33, thereby indirectly restricting the adjusted fitting member 32 so that it will not easily change after adjustment. At the same time, it can release the adjusted state of multiple sets of fitting members 32 on a mounting bracket 31 with one click. Example 2

[0055] Reference Figures 4-7 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0056] Specifically, the lifting assembly 13 includes a fixed plate 13-1 fixed to the platform 11, a cylinder 13-2 fixed on the fixed plate 13-1, a support plate 13-3 fixed to the output end of the cylinder 13-2, a guide sleeve 13-4 fixed on the fixed plate 13-1, and four guide sleeves 13-4 and four guide rods 13-5. The guide sleeves 13-4 are distributed at the top four corners of the mounting plate 14-1 and are fixedly connected to it through the plate. The guide rods 13-5 are distributed at the bottom four corners of the support plate 13-3. The guide sleeves 13-4 and the guide rods 13-5 limit and guide the support plate 13-3, making the support plate 13-3 more stable when it is driven to move up and down by the cylinder 13-2.

[0057] A guide rod 13-5 slides inside the guide sleeve 13-4. Its upper end is fixed to the bottom of the support plate 13-3, and its lower end is fixed to the reinforcing plate 13-6. The rotating shell 21 is rotatably connected to the top of the support plate 13-3. The driving fixing component 23 is installed on the fixing plate 13-1 and the rotating shell 21. The two sets of guide rods 13-5 are reinforced by the reinforcing plate 13-6. The rotating shell 21 is rotatably connected to the support plate 13-3 through the bearing, so that the rotating shell 21 can be fixed on the support plate 13-3 without affecting its rotation.

[0058] The clamping assembly 14 includes a mounting plate 14-1 fixed to the platform 11. A cylinder 14-2 is fixed to one side of the mounting plate 14-1. A movable plate 14-3 is fixed to the output end of the cylinder 14-2. A guide sleeve 14-4 is fixed on the mounting plate 14-1. A guide rod 14-5 slides inside the guide sleeve 14-4, with one end of the guide rod 14-5 fixed to one side of the movable plate 14-3. A mounting bracket 31 is fixed to one side of the movable plate 14-3. Two guide sleeves 14-4 and two guide rods 14-5 are provided on one mounting plate 14-1. The guide sleeves 14-4 and the guide rods 14-5 guide and support the movable plate 14-3, reducing the longitudinal force on the output end of the cylinder 14-2 and providing protection.

[0059] The driving fixing component 23 includes an air cylinder 23-1 fixed on the fixing plate 13-1. The air cylinder 23-1 passes through the fixing plate 13-1 and is fixedly connected to it. The reinforcing plate 13-6 is sleeved on the surface of the air cylinder 23-1 and is slidably connected to it. A rotating tube 23-2 is slidably connected to the upper end of the air cylinder 23-1. The upper end of the rotating tube 23-2 passes through the support plate 13-3 and is fixed to the bottom of the rotating shell 21. The upper end of the rotating tube 23-2 is connected to the bottom of the rotating shell 21. A guide groove 23-3 is opened on the surface of the rotating tube 23-2. A guide post 23-4 is fixed on the inner wall of the air cylinder 23-1, and one end slides in the guide groove 23-3. The lower end of the rotating tube 23-2 passes through to the bottom of the piston 24 and is fixed with a limit ring 23-5. The piston 24 slides on the inner wall of the air cylinder 23-1. The two ends of the spring 25 are fixed to the surface of the piston 24 and the inner wall of the air cylinder 23-1, respectively.

[0060] The guide groove 23-3 is divided into three parts: the upper part, the middle part, and the lower part. When the guide post 23-4 moves on the upper and lower parts of the guide groove 23-3, the rotating tube 23-2 cannot rotate. When the guide post 23-4 moves on the middle part of the guide groove 23-3, the rotating tube 23-2 can rotate. The piston 24 is sealed with the air cylinder 23-1 and the rotating tube 23-2 to ensure sealing and prevent gas leakage from the gap between them during operation. When the lifting assembly 13 does not lift the inverter, the piston 24 is located in the upper middle part of the air cylinder 23-1, and the drive fixing part 23 is in a retracted state. At this time, the guide post 23-4 is located on the upper part of the guide groove 23-3 on the rotating tube 23-2, and the limiting ring 23-5 and the lower end of the rotating tube 23-2 are located in the lower part of the air cylinder 23-1.

[0061] With the setting of the limiting ring 23-5, during the process of lifting the inverter by the lifting component 13, the support plate 13-3 drives the rotating shell 21 and the rotating tube 23-2 to move upward, thereby causing the limiting ring 23-5 to move upward. The guide post 23-4 first moves in the upper part of the guide groove 23-3, so that the rotating tube 23-2 and the rotating shell 21 will not rotate. During this process, the inverter on the conveying component 12 is initially lifted and detached. When the guide post 23-4 transitions to the middle part of the guide groove 23-3 and moves, the rotating tube 23-2, the rotating shell 21 and the rubber ring 22 rotate, and adjustments are made during the lifting process of the inverter.

[0062] When the guide post 23-4 moves to the lower end of the guide groove 23-3, the rotating tube 23-2, rotating shell 21, and rubber ring 22 will not rotate. At this time, the limiting ring 23-5 contacts the bottom of the piston 24. As the rotating tube 23-2 moves upward, it drives the limiting ring 23-5 to move upward, causing the piston 24 to move upward. This draws a portion of the gas in the space composed of the rubber ring 22, rotating shell 21, and inverter into the air cylinder 23-1, making the rubber ring 22 act as a suction cup and seal. Through the setting of the spring 25, the spring is stretched after the piston 24 rises, and the generated elastic force provides the force for the piston 24 to reset. Example 3

[0063] Reference Figures 8 to 17 This is the third embodiment of the present invention, which is based on the first two embodiments.

[0064] Specifically, the fitting component 32 includes a cylinder 32-1 fixed to the mounting bracket 31. The cylinder 32-1 passes through the mounting bracket 31 and is fixedly connected to it. A piston 32-2 slides inside the cylinder 32-1. A round rod 32-3 slides at one end of the cylinder 32-1. One end of the rod passes through the inner cavity of the cylinder 32-1 and is fixed to the surface of the piston 32-2. A ball bearing 32-4 is embedded at the other end of the rod. A seal is made between the surface of the piston 32-2 and the inner wall of the cylinder 32-1 to prevent liquid from leaking from the gap between them when the piston 32-2 moves. The round rod 32-3 passes through the cylinder 32-1 and is slidably connected to it. The ball bearing 32-4 is rotatably connected to one end of the round rod 32-3. By setting the ball bearing 32-4, after it moves and contacts the side of the inverter, it reduces the obstruction to the inverter during the continued lifting process, so as to smoothly carry out the lifting and lowering.

[0065] A spring piece 32-5 is fixed between the surface of piston 32-2 and the inner wall of cylinder 32-1. The spring piece 32-5 deforms after piston 32-2 moves, providing a certain force for piston 32-2 to reset after valve 33 is unlocked. A connecting hole 32-6 is provided at one end of cylinder 32-1, which connects cylinder 32-1 and valve 33. A limiting groove 32-7 is provided on the outer surface of rod 32-3. A limiting block 32-8 is fixed on cylinder 32-1 and slides in the limiting groove 32-7. The limiting block 32-8 and the limiting groove 32-7 limit and guide rod 32-3, thereby limiting and guiding piston 32-2, so that rod 32-3 and piston 32-2 will not rotate during movement.

[0066] When the two sides of the inverter to be tested are regular planes, simply place the trigger rod 36-2 on the limit adjustment component 36 in the second part of the guide hole 35 in the guide plate 34 to limit the valve component 33 to be in a closed state. This will control the operation of the clamping assembly 14 to push the bonding component 32 to clamp and fix the lifted inverter. When the two sides of the inverter to be tested are irregular, place the trigger rod 36-2 on the limit adjustment component 36 in the first part of the guide hole 35 in the guide plate 34. This will control the operation of the clamping assembly 14 to drive the bonding component 32 to move, contact and act on the inverter surface, causing the corresponding round rod 32-3 to move in the cylinder 32-1, thereby causing the piston 32-2 to move in the cylinder 32-1, squeezing the liquid to open the valve component 33 and press the excess liquid into the liquid bladder 37.

[0067] The control clamping assembly 14 is stopped, and the trigger rod 36-2 is placed in the second part of the guide hole 35 in the guide plate 34 to limit the valve component 33 to be in a closed state. This limits the piston 2 32-2 and the round rod 32-3, so that the trajectory formed by the multiple bonding parts 32 is in contact with the side of the inverter, which facilitates the clamping and fixing of inverters of the same specifications in the future. When it is necessary to release the trajectory, when the trigger rod 36-2 on the limit adjustment component 36 moves from the second part to the third part of the guide hole 35, the valve component 33 on the multiple bonding parts 32 on one side can be opened, and the liquid in the liquid bladder 37 is pressed into the bonding part 32 to reset it.

[0068] The valve component 33 includes a valve housing 33-1 fixed to one end of the cylinder 32-1. A valve block 33-2 slides on the inner wall of the valve housing 33-1. The valve block 33-2 and the valve housing 33-1 are sealed to prevent liquid from leaking from the gap between the valve block 33-2 and the valve housing 33-1 when the valve block 33-2 is closed. A valve stem 33-3 slides on the valve housing 33-1. Its lower end extends into the inner cavity of the valve housing 33-1 and is fixed to the top of the valve block 33-2. Its upper end is fixed to the surface of the guide plate 34. A spring 33-4 is sleeved on the upper surface of the valve stem 33-3, and its two ends are fixed to the surface of the guide plate 34 and the surface of the valve block 33-2, respectively.

[0069] One side of the valve block 33-2 is provided with an inclined surface. With this setting, when the trigger block 39-7 is located in the first part of the guide hole 35 on the guide plate 34, when the piston 32-2 moves inside the cylinder 32-1 to push the liquid to press the valve block 33-2, the valve block 33-2 can be moved upward, so that the cylinder 32-1 and the hose 38 are connected. When the valve block 33-2 is closed, the liquid in the hose 38 will not press the valve block 33-2 to open it. With the setting of the spring 33-4, after the valve block 33-2 and the valve rod 33-3 move, they are stretched and deformed, providing force for subsequent reset.

[0070] The limiting adjustment component 36 includes a sliding sleeve 36-1 sleeved on the mounting bracket 31. The sliding sleeve 36-1 is slidably sleeved on the surface of the mounting bracket 31. A trigger rod 36-2 is fixed on the sliding sleeve 36-1, and a guide plate 34 is sleeved on its surface. A slot 36-3 is opened on the inner surface of the sliding sleeve 36-1. With the setting of the slot 36-3 and the locking block 36-5, when the sliding sleeve 36-1 moves and drives the trigger rod 36-2 to move and be placed in the second part of the guide hole 35, the locking block 36-5 is inserted into the slot 36-3 to limit the sliding sleeve 36-1 and the trigger rod 36-2 so that they will not move back.

[0071] The mounting bracket 31 has a groove 36-4, and a locking block 36-5 slides in the groove 36-4 and cooperates with the slot 36-3. The locking block 36-5 has a bevel on one side. After the locking block 36-5 is inserted into the slot 36-3, it can apply force to the sliding sleeve 36-1 and squeeze the locking block 36-5 to move it into the groove 36-4. This allows the trigger rod 36-2 to move from the second part to the third part of the guide hole 35 on the guide plate 34, thereby opening the valve 33 on the multiple sets of fitting parts 32 on one side.

[0072] A handle 36-7 slides on the sliding sleeve 36-1, and its two ends are fixed to the bottom of the locking block 36-5. By pulling the handle 36-7, the locking block 36-5 is moved into the groove 36-4, releasing the limitation on the sliding sleeve 36-1. Springs 36-8 are sleeved on both ends of the handle 36-7, and their two ends are fixed to the surface of the locking block 36-5 and the inner wall of the groove 36-4, respectively. A spring piece 36-9 is fixed between the surface of the sliding sleeve 36-1 and the surface of the mounting bracket 31. By the setting of the spring piece 36-9, it deforms under force as the sliding sleeve 36-1 moves. After the sliding sleeve 36-1 is released from the limitation, it provides a force for the reset of the sliding sleeve 36-1 and the trigger rod 36-2.

[0073] The inner wall of the groove 36-4 is provided with a square groove 36-10. A square block 36-6 is fixed on the locking block 36-5 and slides in the square groove 36-10. Through the setting of the spring 36-8, when the handle 36-7 pulls the locking block 36-5 to move, it is compressed, providing a force for the reset of the locking block 36-5 and the handle 36-7. The square groove 36-10 and the square block 36-6 guide and limit the locking block 36-5. Example 4

[0074] Reference Figures 14-17 This is the fourth embodiment of the present invention, which is based on the first three embodiments.

[0075] Specifically, a reinforcement member 39 is installed on the cylinder 32-1 and cooperates with the trigger rod 36-2. It includes a groove 39-1 opened in the cylinder 32-1. A drive plate 39-2 and a movable block 39-3 slide in the groove 39-1 respectively. The drive plate 39-2 and the movable block 39-3 cooperate with each other. The ends of the drive plate 39-2 and the movable block 39-3 near the contact are provided with inclined surfaces. With this setting, when the drive plate 39-2 moves, it can squeeze the movable block 39-3 to move downward. A pressure block 39-4 is fixed at the lower end of the movable block 39-3, and a rubber pad 39-5 is fixed at the bottom of the pressure block 39-4.

[0076] With the rubber pad 39-5 in place, when the movable block 39-3 moves down and drives the pressure block 39-4 to move down, the pressure block 39-4 moves down and contacts the surface of the round rod 32-3, reinforcing the position of the adjusted round rod 32-3 on the cylinder 32-1. Due to its compressibility, as the drive plate 39-2 moves, it acts on the movable block 39-3, causing the pressure block 39-4 to continue moving down and compressing the rubber pad 39-5. This does not hinder the continued movement of the drive plate 39-2. The trigger block 39-7 is sleeved on the surface of the short rod 39-6 and is rotatably connected to it.

[0077] A short rod 39-6 is fixed to one end of the drive plate 39-2 outside the cylinder 32-1. A trigger block 39-7 rotates on the short rod 39-6. A torsion spring 39-8 is sleeved on the surface of the short rod 39-6, and its two ends are fixed between the surface of the short rod 39-6 and the surface of the trigger block 39-7, respectively. A support rod 39-9 is fixed to one end of the drive plate 39-2 and contacts the surface of the trigger block 39-7.

[0078] By setting the trigger block 39-7, when the trigger rod 36-2 moves to the second part of the guide hole 35 on the guide plate 34, it is pushed by force, which in turn causes the drive plate 39-2 to move and act on the movable block 39-3, so that the rubber pad 39-5 fixes the round rod 32-3. When the trigger rod 36-2 moves from the second part of the guide hole 35 to the third part, it can continue to push the trigger block 39-7 and the drive plate 39-2 to move until they are separated. When the trigger rod 36-2 moves from the third part of the guide hole 35 to the second part, it can push the trigger block 39-7 to rotate upward without affecting the movement. The torsion spring 39-8 provides a reset force for the rotated trigger block 39-7. The support rod 39-9 limits the trigger block 39-7 so that it can only rotate upward and not downward.

[0079] A sliding groove 39-10 is provided inside the groove 39-1. A slider 39-11 is fixed on the drive plate 39-2 and slides within the sliding groove 39-10. The sliding groove 39-10 and the slider 39-11 guide and limit the drive plate 39-2. A spring 39-12 is fixed between the surface of the slider 39-11 and the inner wall of the sliding groove 39-10. The spring 39-12 is compressed when the drive plate 39-2 moves, causing the slider 39-11 to move, thus providing a force for the reset of the slider 39-11 and the drive plate 39-2.

[0080] A positioning groove 39-13 is provided inside the groove 39-1. A positioning block 39-14 is fixed on the movable block 39-3 and slides in the positioning groove 39-13. The positioning groove 39-13 and the positioning block 39-14 guide and limit the movable block 39-3. A spring 39-15 is fixed between the surface of the positioning block 39-14 and the inner wall of the positioning groove 39-13. The spring 39-15 is compressed when the movable block 39-3 moves and drives the positioning block 39-14 to move, providing a force for the reset of the positioning block 39-14 and the movable block 39-3. Example 5

[0081] Reference Figure 1 , Figure 3 , Figure 4 , Figure 18 and Figure 19 This is the fifth embodiment of the present invention, which is based on the previous four embodiments.

[0082] Specifically, a photoelectric sensor 17 is installed on the conveying assembly 12, a buffer limiting component 18 is installed on the platform 11, and a housing 19 is fixed on the top of the platform 11. The buffer limiting component 18 includes a cylinder 18-1 fixed on the platform 11, a connecting block 18-2 is sleeved on the output end of the cylinder 18-1, a damper 18-3 is embedded in the output end of the cylinder 18-1, a crossbar 18-4 rotates on the connecting block 18-2, a rotating block 18-5 is sleeved on the surface of the crossbar 18-4, a fixing rod 18-6 is fixed on the rotating block 18-5, a roller 18-7 rotates on the fixing rod 18-6, and torsion springs 18-8 are sleeved on both ends of the crossbar 18-4, with their ends fixed to the surface of the crossbar 18-4 and the surface of the rotating block 18-5, respectively. A limiting rod 18-9 slides on the connecting block 18-2, and its lower end is fixed to the surface of the cylinder 18-1.

[0083] A deceleration signal is triggered by photoelectric sensor 17, causing the conveying assembly 12 to decelerate. Multiple rollers 18-7 are installed on a fixed rod 18-6. After the inverter is conveyed into the detection device, they contact the rollers 18-7 and apply force to the fixed rod 18-6, thereby causing the fixed rod 18-6 and the rotating block 18-5 to rotate. The connecting block 18-2 is buffered by the damper 18-3, and the inverter is buffered and limited by the round rod 32-3 and the rollers 18-7. The connecting block 18-2 is guided and limited by the limit rod 18-9 to prevent it from rotating. The torsion spring 18-8 provides a reset force for the rotated crossbar 18-4 and the rotating block 18-5. After lifting, the buffer limit member 18 retracts, allowing the inverter to be smoothly discharged after the detection is completed. After discharge, it moves upward again to buffer and limit the next inverter.

[0084] The testing unit 1 also includes a dynamic compensation positioning system, which monitors the workpiece position in real time through a laser displacement sensor (sampling rate 1kHz), dynamically adjusts the lifting cylinder pressure (0.2-0.6MPa) using a PID closed-loop control algorithm, and employs multispectral fusion detection technology to develop a dual-wavelength detection scheme (visible light + near-infrared light). Screw detection: identification is based on the reflective properties of metal (threshold setting ΔL≥15), and serial number tube detection: OCR character recognition (accuracy ≥99.7%) + HSV color space analysis (ΔH≤3°) is used. This improves detection efficiency and reduces labor costs; the screw missed detection rate is extremely low, and the serial number tube misjudgment rate is extremely low. The modular design of the equipment supports rapid model changeover and is compatible with the testing of 5-30kW inverter products. These are existing technologies, and the working principles of this part are all existing technologies, which are clearly understood by those skilled in the art and will not be elaborated here.

[0085] In use, the triple-speed chain of the conveying component 12 conveys the workpiece at 0.5m / s. The deceleration signal is triggered by the photoelectric sensor 17. After being conveyed into the device, the inverter is buffered and limited by the buffer limit component 18. The operation of the lifting component 13 is controlled to lift the inverter. At the same time, during the lifting process, the adjustment mechanism 2 is driven. During the lifting process, the rubber ring 22 on the adjustment mechanism 2 provides buffer support, adjustment and initial fixation of the inverter in sequence.

[0086] To control the operation of the clamping assembly 14, when the two sides of the inverter to be inspected are regular planes, simply place the trigger rod 36-2 on the limit adjustment piece 36 in the second part of the guide hole 35 in the guide plate 34 to limit the valve piece 33 to be in the closed state, thereby controlling the operation of the clamping assembly 14 to push the fitting piece 32 to clamp and fix the lifted inverter.

[0087] When the two sides of the inverter to be tested are irregular, the trigger rod 36-2 on the limit adjustment component 36 is placed in the first part of the guide hole 35 in the guide plate 34, and the clamping assembly 14 is controlled to drive the fitting component 32 to move, contact and act on the inverter surface, so that the corresponding round rod 32-3 moves in the cylinder 32-1, thereby causing the piston 32-2 to move in the cylinder 32-1, squeezing the liquid to open the valve component 33.

[0088] Excess liquid is forced into the liquid bladder 37, controlling the clamping assembly 14 to stop. The trigger rod 36-2 is placed in the second part of the guide hole 35 in the guide plate 34, limiting the valve component 33 to a closed state. This limits the piston 2 32-2 and the round rod 32-3, ensuring that the trajectory of the multiple fitting parts 32 fits the side of the inverter, facilitating the clamping and fixing of inverters of the same specifications. The products are clamped simultaneously from both sides. The three-axis robot 15 drives the vision inspection module 16 to perform a global scan. When a suspected defect is found, the area array CMOS is switched to perform local macro photography, realizing visual inspection of the inverter.

[0089] In summary, with the cooperation of the clamping component 14, the bonding mechanism 3 can fit the curved / irregular side of the inverter during clamping. Compared with the prior art, there will be no localized force concentration or suspension. The clamping is stable and the clamping force is evenly distributed, which is not easy to cause shaking. With the cooperation of the lifting component 13, the adjustment mechanism 2 can adjust and initially fix the inverter, which makes it easier for the bonding mechanism 3 to fit and fix the inverter more accurately in the subsequent process.

[0090] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A detection device for detecting an inverter assembly based on visual detection, characterized by: The utility model relates to a kind of detection mechanism, adjusting mechanism and fitting mechanism, including, Detection mechanism (1), including table body (11), the table body (11) is respectively installed with conveying assembly (12), jacking assembly (13), clamping assembly (14) and three-axis robot (15), conveying assembly (12) is located jacking assembly (13) both sides, clamping assembly (14) is located conveying assembly (12) side, three-axis robot (15) is installed with visual detection module (16), and buffer limiting part (18) is installed on the table body (11);And, Adjusting mechanism (2) is installed on jacking assembly (13), including rotating shell (21) rotating on jacking assembly (13), rubber ring (22) is fixed in rotating shell (21), driving fixed part (23) is installed on jacking assembly (13) and is arranged on rotating shell (21), piston one (24) and spring one (25) are respectively installed in driving fixed part (23), and the both ends of spring one (25) are fixed with piston one (24) and driving fixed part (23) respectively;And, Fitting mechanism (3) is installed on clamping assembly (14), including mounting bracket (31) and liquid bag (37) fixed on clamping assembly (14), fitting part (32) is fixed on mounting bracket (31), valve part (33) is communicated at one end of fitting part (32), guide plate (34) is fixed on the upper end of valve part (33), guide hole (35) is opened on the guide plate (34), and limiting adjusting part (36) is installed on mounting bracket (31) and is matched with guide plate (34), and hose (38) is communicated between liquid bag (37) and valve part (33); The fitting part (32) includes cylinder (32-1) fixed on the mounting bracket (31), piston two (32-2) is slidably arranged in the cylinder (32-1), round rod (32-3) is slidably arranged at one end of the cylinder (32-1), one end of the round rod (32-3) penetrates into the inner cavity of the cylinder (32-1) and is fixed on the surface of the piston two (32-2), the other end of the round rod (32-3) is embedded with ball (32-4), spring piece one (32-5) is fixed between the surface of the piston two (32-2) and the inner wall of the cylinder (32-1), the cylinder (32-1) is provided with communication hole (32-6) at one end, the outer surface of the round rod (32-3) is provided with limiting groove (32-7), and the cylinder (32-1) is fixed with limiting block (32-8) and is slidably arranged in the limiting groove (32-7). The liquid bag (37), fitting part (32), valve part (33) and hose (38) are filled with liquid, and the liquid bag (37) is made of rubber inflatable material.

2. The visual inspection based detection apparatus for detecting assembly of inverters as claimed in claim 1 wherein: The jacking assembly (13) comprises a fixed plate (13-1) fixed on the table body (11), a cylinder one (13-2) fixed on the fixed plate (13-1), a support plate (13-3) fixed on the output end of the cylinder one (13-2), a guide sleeve one (13-4) fixed on the fixed plate (13-1), a guide rod one (13-5) slidingly arranged in the guide sleeve one (13-4), the upper end of the guide rod one (13-5) being fixed to the bottom of the support plate (13-3), and the lower end of the guide rod one (13-5) being fixed with a reinforcing plate (13-6), the rotating shell (21) being rotatably connected to the top of the support plate (13-3), and the driving fixing piece (23) being mounted on the fixed plate (13-1) and the rotating shell (21).

3. The visual inspection based detection apparatus for detecting assembly of inverters as claimed in claim 1 wherein: The clamping assembly (14) comprises a mounting plate (14-1) fixed on the table body (11), a cylinder two (14-2) fixed on one side of the mounting plate (14-1), a moving plate (14-3) fixed on the output end of the cylinder two (14-2), a guide sleeve two (14-4) fixed on the mounting plate (14-1), a guide rod two (14-5) slidingly arranged in the guide sleeve two (14-4), one end of the guide rod two (14-5) being fixed to one side of the moving plate (14-3), and the mounting frame (31) being fixed to one side of the moving plate (14-3).

4. The visual inspection based detection apparatus for detecting assembly of an inverter according to claim 2, characterized by: The driving fixing piece (23) comprises a gas cylinder (23-1) fixed on the fixed plate (13-1), a rotating pipe (23-2) slidingly connected to the upper end of the gas cylinder (23-1), the rotating pipe (23-2) penetrating through the support plate (13-3) and being fixed to the bottom of the rotating shell (21), a guide groove (23-3) being formed in the surface of the rotating pipe (23-2), a guide column (23-4) being fixed on the inner wall of the gas cylinder (23-1) and slidingly arranged in the guide groove (23-3), the lower end of the rotating pipe (23-2) penetrating into the bottom of a piston one (24) and being fixed with a limiting ring (23-5), the piston one (24) slidingly arranged on the inner wall of the gas cylinder (23-1), and a spring one (25) fixed on the surface of the piston one (24) and the inner wall of the gas cylinder (23-1).

5. The visual inspection based detection apparatus for detecting assembly of inverters as claimed in claim 3, wherein: The valve piece (33) comprises a valve shell (33-1) fixed on one end of a cylinder (32-1), a valve block (33-2) slidingly arranged on the inner wall of the valve shell (33-1), a valve rod (33-3) slidingly arranged on the valve shell (33-1), the lower end of the valve rod (33-3) penetrating into the inner cavity of the valve shell (33-1) and being fixed to the top of the valve block (33-2), the upper end of the valve rod (33-3) being fixed on the surface of a guide plate (34), a spring two (33-4) being sleeved on the upper end surface of the valve rod (33-3), and the two ends of the spring two (33-4) being fixed between the surface of the guide plate (34) and the surface of the valve block (33-2).

6. The visual inspection based detection apparatus for detecting assembly of inverters as claimed in claim 5 wherein: The limiting adjusting piece (36) comprises a sliding sleeve (36-1) sleeved on the mounting frame (31), a trigger lever (36-2) fixed on the sliding sleeve (36-1), and a guide plate (34) sleeved on the surface of the sliding sleeve (36-1), and a clamping groove (36-3) is formed in the inner surface of the sliding sleeve (36-1), and a recess (36-4) is formed in the mounting frame (31), and a clamping block (36-5) is slidably arranged in the recess (36-4) and matched with the clamping groove (36-3).

7. The visual inspection based detection apparatus for detecting assembly of inverters as claimed in claim 6 wherein: A handle (36-7) is slidably arranged on the sliding sleeve (36-1), and the two ends of the handle (36-7) are fixed to the bottom of the clamping block (36-5), spring three (36-8) is sleeved on the surface of the two ends of the handle (36-7), and the two ends of the spring three (36-8) are fixed to the surface of the clamping block (36-5) and the inner wall of the recess (36-4) respectively, spring two (36-9) is fixed between the surface of the sliding sleeve (36-1) and the surface of the mounting frame (31), a square groove (36-10) is formed in the inner wall of the recess (36-4), and a square block (36-6) is fixed on the clamping block (36-5) and slidably arranged in the square groove (36-10).

8. The visual inspection based detection apparatus for detecting assembly of inverters as claimed in claim 6 wherein: The cylinder (32-1) is provided with a reinforcing piece (39) matched with the trigger lever (36-2), which comprises a groove (39-1) formed in the cylinder (32-1), a driving plate (39-2) and a movable block (39-3) slidably arranged in the groove (39-1) respectively, the driving plate (39-2) and the movable block (39-3) are matched, the movable block (39-3) is fixed with a pressing block (39-4) at the lower end, the pressing block (39-4) is fixed with a rubber pad (39-5) at the bottom, a short rod (39-6) is fixed at one end of the driving plate (39-2) outside the cylinder (32-1), a trigger block (39-7) is rotatably arranged on the short rod (39-6), torsion spring one (39-8) is sleeved on the surface of the short rod (39-6), and the two ends of the torsion spring one (39-8) are fixed to the surface of the short rod (39-6) and the surface of the trigger block (39-7) respectively, and a support rod (39-9) is fixed at one end of the driving plate (39-2) and in contact with the surface of the trigger block (39-7).

9. The visual inspection based detection apparatus for detecting assembly of inverters as claimed in claim 8, wherein: A sliding groove (39-10) is formed in the groove (39-1), a sliding block (39-11) is fixed on the driving plate (39-2) and slidably arranged in the sliding groove (39-10), spring four (39-12) is fixed between the surface of the sliding block (39-11) and the inner wall of the sliding groove (39-10), a positioning groove (39-13) is formed in the groove (39-1), a positioning block (39-14) is fixed on the movable block (39-3) and slidably arranged in the positioning groove (39-13), and spring five (39-15) is fixed between the surface of the positioning block (39-14) and the inner wall of the positioning groove (39-13).

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