Vision-based repair welding detection device and method for DIP process

Abstract

The invention relates to the technical field of repair welding detection, and particularly discloses a vision-based repair welding detection device for a DIP process, which comprises a worktable and a control panel mounted on the worktable, a supporting seat is further fixedly mounted on the worktable, and an air cylinder is mounted at the upper end of the supporting seat through a supporting frame; the telescopic end of the air cylinder movably penetrates through the upper end of the supporting base, the telescopic end of the air cylinder is connected with a mounting disc, a mounting base is mounted below the mounting disc, the lower end of the mounting base is connected with a shading elastic telescopic cover, and a dust suction mechanism is arranged between the shading elastic telescopic cover and the mounting disc; mounting columns are distributed on the lower surface of the upper end of the supporting base at equal angles. When components are detected, external light can be shielded through the shading elastic telescopic cover, so that the influence of light intensity on the shooting effect can be avoided, in addition, interference of dust on shooting can be eliminated through the dust collection mechanism and the jet-propelled dust removal mechanism, and the detection accuracy can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of repair welding detection, in particular to a visual-based repair welding detection device and method for DIP process. BACKGROUND

[0002] In the DIP process of the electronic manufacturing industry, after the plug-in components are welded through the wave soldering or dip soldering process, due to factors such as oxidation of component pins, soldering temperature fluctuations, uneven application of flux, and transmission chain vibration, it is easy to produce defects such as virtual welding, missed welding, bridging, insufficient or excessive soldering, etc. These defects directly affect the electrical performance, stability and service life of electronic equipment, and may even cause the product batch to be scrapped, so the welding quality detection after the DIP process is an indispensable key link in the electronic manufacturing process.

[0003] Traditional DIP process welding detection mainly relies on manual visual inspection. The detection personnel observes and judges the welding area of the component pins and pads one by one through a magnifying glass or a microscope. However, manual detection has significant limitations: on the one hand, DIP plug-in boards usually contain a large number of densely arranged components, and manual detection is labor-intensive and inefficient, which is difficult to adapt to the high-volume production needs of modern production lines; on the other hand, the determination of welding defects depends on the experience of the detection personnel, which is highly subjective and easily affected by factors such as visual fatigue and emotional fluctuations, resulting in high defect omission rate and misdiagnosis rate, and unable to guarantee the consistency and reliability of the detection results; in addition, for small bridging and slight virtual welding defects, manual visual inspection is difficult to accurately identify, further restricting the control level of welding quality.

[0004] To solve the drawbacks of manual detection, automated detection technology has been gradually applied in the field of DIP process welding detection. Among them, visual-based detection technology has become the core development direction in this field due to its non-contact, high precision and high efficiency. Visual detection technology captures high-definition images of the welding area through an industrial camera, and analyzes and processes image information using image preprocessing, feature extraction, pattern recognition and other algorithms to automatically identify the type and location of welding defects. Compared with traditional manual detection, visual detection not only greatly improves the detection efficiency and adapts to the continuous operation needs of the production line, but also eliminates the interference of human subjective factors, realizes the standardization and precision of defect judgment, and effectively reduces the omission rate and misdiagnosis rate.

[0005] However, the existing visual detection repair welding quality device is easily affected by dust during use, such as dust adsorbed on the repair welding position or dust suspended in the camera position, which interferes with the shooting of the components; In addition, the existing visual detection device for welding quality is also easily affected by external light when in use, for example, too strong or too weak light will affect the shooting effect, thereby easily affecting the judgment of the welding quality. Therefore, a visual-based welding detection device for DIP process is needed to solve the above problems. SUMMARY

[0006] The purpose of the present application is to provide a visual-based welding detection device for DIP process and a detection method to solve the problem that the existing visual detection device for welding quality is easily affected by dust and light intensity when detecting.

[0007] To achieve the above purpose, the present application provides the following technical solutions: A visual-based welding detection device for DIP process, comprising a workbench and a control panel installed on the workbench, a support seat is also fixedly installed on the workbench, and a gas cylinder is installed on the upper end of the support seat through a support frame, the telescopic end of the gas cylinder is movably penetrated through the upper end of the support seat, and an installation disc is connected to the telescopic end of the gas cylinder, a mounting seat is installed below the installation disc, and a light-shielding elastic telescopic cover is connected to the lower end of the mounting seat, a dust collection mechanism is arranged between the light-shielding elastic telescopic cover and the installation disc, a plurality of mounting columns are distributed at equal angles on the lower surface of the upper end of the support seat, and the lower ends of the mounting columns are sequentially movably penetrated through the installation disc and the mounting seat, a support disc is connected to the lower end of the mounting column, and the support disc is arranged on the inner side of the light-shielding elastic telescopic cover, a mounting frame is connected to the lower end of the support disc through a sleeve ring, and a camera is installed at both ends of the lower surface of the mounting frame, a jet dust removal mechanism is arranged between the inner top ends of the mounting frame and the mounting seat, a connecting frame is fixedly connected to the lower surface of the support disc through a connecting column, and the connecting frame is bearing-connected to the outer side of the mounting frame, an installation ring is installed on the connecting frame, a plurality of fill light lamps are installed at equal angles on the lower surface of the installation ring, and a steering mechanism is arranged between the outer side of the mounting frame and the lower end of the mounting seat.

[0008] Preferably, the dust collection mechanism comprises air ducts arranged at equal angles in the light-shielding elastic telescopic cover, the lower ends of the air ducts are penetrated through the inner lower end of the light-shielding elastic telescopic cover through dust collection holes, a plurality of piston tubes are arranged at equal angles on the lower surface of the installation disc, the lower ends of the piston tubes are seamlessly slidably connected to the upper ends of corresponding piston rods on the inner side, the lower ends of the piston rods are fixedly connected to the lower end of the mounting seat, and springs are arranged between the upper ends of the piston rods and the inner top ends of the corresponding piston tubes.

[0009] Preferably, the lower end of the piston tube is provided with a one-way exhaust hole, the piston rod is provided with a linear channel penetrating through the corresponding air duct, and the linear channel is connected to the inner side of the lower end of the corresponding piston tube through a one-way air suction hole.

[0010] Preferably, the jet dust removal mechanism comprises a piston column fixedly connected to the top end of the mounting base, the upper surface of the support disc is fixedly connected with a coaxial cavity tube, the inner side of the upper end of the cavity tube is seamlessly connected with the lower end of the piston column, the cavity tube is provided with a one-way air inlet hole, and the one-way air inlet hole is arranged below the lower end of the piston column.

[0011] Preferably, the two ends of the sleeve ring are connected with the lower end of the support disc and the upper end of the mounting frame respectively by using sealing bearings, the support disc is provided with a one-way air injection hole penetrating through both sides thereof, the one-way air injection hole is connected with the cavity tube, and the mounting frame is provided with a guide hole which has the same shape as the mounting frame.

[0012] Preferably, the inner side of each end of the mounting frame is provided with an annular air distribution groove, and the annular air distribution groove is provided with a jet hole penetrating to the lower surface of the mounting frame at equal angles.

[0013] Preferably, the jet holes at the two ends of the mounting frame are distributed at equal angles with respect to the corresponding camera, and the jet holes are arranged to be inclined towards the position directly below the camera.

[0014] Preferably, the turning mechanism comprises two guide grooves arranged on the outer side of the upper end of the mounting frame, and one end of each guide groove is slidably connected with a corresponding guide rod, the other end of the guide rod is fixedly connected with the lower end of the mounting base, and the guide rod is L-shaped.

[0015] Preferably, the two guide grooves are centrally symmetrically arranged about the axis of the upper end of the mounting frame, and each guide groove is composed of two sections, the upper end of the guide groove is a vertical straight groove, and the lower end of the guide groove is an arc-shaped groove which is downwardly inclined, and the lower end of the straight groove and the upper end of the arc-shaped groove are smoothly connected.

[0016] A DIP process-based visual-based repair welding detection method, the method comprising: Step one: first place the component after repair welding on the corresponding position of the workbench, and start the air cylinder through the control panel; When the air cylinder is started, the mounting disc connected to the lower end of the air cylinder moves downward synchronously, when the lower end of the light-shielding elastic telescopic cover contacts with the upper surface of the workbench, the mounting disc continues to move, causing the relative movement between the piston tube and the piston rod, and then the spring is compressed; In the process of relative movement between the piston tube and the piston rod, the light-shielding elastic telescopic cover is also gradually compressed, when the piston rod moves gradually to the inside of the piston tube, the inner side of the lower end of the piston tube generates negative pressure, and then the suction hole generates suction force through the one-way air suction hole, the linear channel on the piston rod and the air duct, so that the dust in the light-shielding elastic telescopic cover is sucked in, and then discharged through the one-way air exhaust hole; In addition, the process of gradually compressing the light-shielding elastic telescopic cover causes the piston column to gradually move into the cavity tube, and in the process, the gas in the cavity tube is sprayed out from the jetting hole after passing through the one-way gas injection hole, the gas guide hole and the annular gas distribution groove, thereby cleaning the camera and avoiding dust from hindering the camera shooting; Meanwhile, the process of gradually compressing the light-shielding elastic telescopic cover causes the mounting seat to move downward with the light-shielding elastic telescopic cover, and then causes the guide rod to move in the vertical linear groove part of the guide groove; Step two: after the piston rod moves a certain distance in the corresponding piston tube, the gas cylinder is stopped through the control panel, the light supplementing lamp is started, and then the camera is used to shoot the components after the repair welding; Step three: the gas cylinder is continuously started through the control panel, and after the gas cylinder is started again, the mounting seat and the light-shielding elastic telescopic cover continue to move downward; When the mounting seat continues to move downward, the guide rod gradually slides from the vertical linear groove part to the arc-shaped groove part of the guide groove; When the guide rod moves in the arc-shaped groove part, the mounting frame is rotated, and then the camera is started through the control panel to shoot the components again; Through twice shooting, the quality of the components after the repair welding is detected.

[0017] Compared with the prior art, the beneficial effects of the DIP process based on the visual repair welding detection device are as follows: when detecting components, the light-shielding elastic telescopic cover can block external light, so that the influence of light intensity on the shooting effect can be avoided, and in addition, the dust interference on shooting can be eliminated through the dust suction mechanism and the jet dust removal mechanism, which helps to improve the detection accuracy: 1. The mounting seat and the light-shielding elastic telescopic cover can be lowered by starting the gas cylinder, and after the light-shielding elastic telescopic cover completely covers the components, the influence of external light on the camera shooting can be avoided, and in addition, the light supplementing lamp can supplement light during the camera shooting, so as to ensure sufficient light; 2. When the mounting seat and the light-shielding elastic telescopic cover descend, the piston tube and the piston rod produce relative movement, so that the suction hole can generate suction, which helps to suck the dust around the components into the piston tube and discharge the dust through the one-way exhaust hole, thereby avoiding the influence of the dust around the components on the camera shooting effect; 3. In the process that the piston column moves into the cavity tube, the gas in the cavity tube is sprayed out from the jetting hole, so that the dust suspended below the camera during shooting can be reduced to affect the shooting effect, and in addition, the suction hole has suction when the jetting hole sprays gas, so that the dust in the light-shielding elastic telescopic cover can be greatly reduced, which helps to reduce the influence of dust on the shooting effect, so as to avoid the influence of dust on the judgment of the repair welding quality of the components. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1It is a main view structure schematic diagram of the present application; Figure 2 It is a connecting bottom view structure schematic diagram of the cylinder and the light-shielding elastic telescopic cover of the present application; Figure 3 It is a connecting structure schematic diagram of the cylinder and the mounting ring of the present application; Figure 4 It is a connecting structure schematic diagram of the mounting ring and the mounting disc of the present application; Figure 5 It is a structure schematic diagram of the present application Figure 4 in which A point is enlarged; Figure 6 It is a connecting section view structure schematic diagram of the light-shielding elastic telescopic cover and the mounting disc of the present application; Figure 7 It is a structure schematic diagram of the present application Figure 6 in which B point is enlarged; Figure 8 It is a structure schematic diagram of the present application Figure 6 in which C point is enlarged; Figure 9 It is a side view structure schematic diagram of the mounting frame of the present application.

[0019] In the figure: 1, workbench; 2, control panel; 3, support seat; 4, cylinder; 5, support frame; 6, light-shielding elastic telescopic cover; 7, mounting disc; 8, mounting seat; 9, dust suction hole; 10, piston tube; 11, mounting ring; 12, light supplementing lamp; 13, mounting frame; 14, camera; 15, air jet hole; 16, connecting frame; 17, air passage; 18, one-way exhaust hole; 19, piston rod; 20, one-way air suction hole; 21, spring; 22, mounting column; 23, piston column; 24, cavity tube; 25, one-way air inlet hole; 26, support disc; 27, one-way air injection hole; 28, connecting column; 29, sleeve ring; 30, air guide hole; 31, guide groove; 32, guide rod; 33, annular air dispersion groove. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0021] Please refer to Figures 1-9 , the present application provides the following technical solutions: Embodiment one: in order to solve the problem that the device for visual detection of welding quality is affected by dust and light when shooting components, thereby affecting the judgment, the following technical scheme is provided, specifically, a DIP process welding detection device based on vision, comprising a workbench 1 and a control panel 2 installed on the workbench 1, a support seat 3 is also fixedly installed on the workbench 1, and the upper end of the support seat 3 is installed with a cylinder 4 through a support frame 5, the telescopic end of the cylinder 4 is movably penetrated through the upper end of the support seat 3, and the telescopic end of the cylinder 4 is connected with a mounting disc 7, a mounting seat 8 is installed below the mounting disc 7, and the lower end of the mounting seat 8 is connected with a light shielding elastic telescopic cover 6, a dust collection mechanism is arranged between the light shielding elastic telescopic cover 6 and the mounting disc 7, the lower surface of the upper end of the support seat 3 is equally angularly distributed with mounting columns 22, the lower ends of the mounting columns 22 are movably penetrated through the mounting disc 7 and the mounting seat 8 in turn, the lower ends of the mounting columns 22 are connected with a support disc 26, and the support disc 26 is arranged on the inner side of the light shielding elastic telescopic cover 6, the lower end of the support disc 26 is connected with a mounting frame 13 through a sleeve ring 29, the lower surfaces of both ends of the mounting frame 13 are both installed with a camera 14, a jet dust removal mechanism is arranged between the inner top ends of the mounting frame 13 and the mounting seat 8, the lower surface of the support disc 26 is fixedly connected with a connecting frame 16 through a connecting column 28, the connecting frame 16 is bearing connected on the outer side of the mounting frame 13, the connecting frame 16 is installed with a mounting ring 11, and the lower surface of the mounting ring 11 is equally angularly installed with a light supplementing lamp 12.

[0022] The dust collection mechanism comprises air ducts 17 arranged equally angularly in the light shielding elastic telescopic cover 6, the lower ends of the air ducts 17 are penetrated through to the inner lower end of the light shielding elastic telescopic cover 6 through dust collection holes 9, piston tubes 10 are arranged equally angularly on the lower surface of the mounting disc 7, the lower ends of the piston tubes 10 are seamlessly slidably connected with the upper ends of corresponding piston rods 19 on the inner side, the lower ends of the piston rods 19 are fixedly connected with the lower end of the mounting seat 8, springs 21 are arranged between the upper ends of the piston rods 19 and the inner top ends of the corresponding piston tubes 10, the lower ends of the piston tubes 10 are provided with one-way exhaust holes 18, the piston rods 19 are provided with linear channels penetrating through the corresponding air ducts 17, and the linear channels are connected with the inner side of the lower end of the corresponding piston tubes 10 through one-way air suction holes 20.

[0023] The jet dust removal mechanism comprises a piston column 23 fixedly connected to the top end of the mounting seat 8, the upper surface of the supporting disc 26 is fixedly connected with a coaxial cavity tube 24, the inner side of the upper end of the cavity tube 24 is seamlessly slidably connected with the lower end of the piston column 23, the cavity tube 24 is provided with a one-way air inlet hole 25, the one-way air inlet hole 25 is arranged below the lower end of the piston column 23, the two ends of the sleeve ring 29 are connected with the lower end of the supporting disc 26 and the upper end of the mounting frame 13 respectively by using sealing bearings, the supporting disc 26 is provided with a one-way air injection hole 27 penetrating through the two sides thereof, the one-way air injection hole 27 is connected with the cavity tube 24, the mounting frame 13 is provided with a gas guide hole 30 which has the same shape as the mounting frame 13, the inner side of the two ends of the mounting frame 13 is provided with an annular air distribution groove 33, the annular air distribution groove 33 is provided with jet holes 15 penetrating to the lower surface of the mounting frame 13 at equal angles, the jet holes 15 of the two ends of the mounting frame 13 are distributed at equal angles about the corresponding camera 14, and the jet holes 15 are arranged to be obliquely directed to the position directly below the camera 14.

[0024] According to Figures 1-8 , in use, the component to be detected is placed on the workbench 1 at a proper position, and the air cylinder 4 is started through the control panel 2; After the air cylinder 4 is started, the mounting disc 7 is lowered, and the mounting seat 8 connected with the mounting disc 7 is also lowered, in the process, the light shielding elastic telescopic cover 6 is lowered with the mounting seat 8 to completely cover the component, so that the influence of external light source on the shooting process of the camera 14 can be isolated; When the lower end of the light shielding elastic telescopic cover 6 contacts the upper surface of the workbench 1, the mounting seat 8 continues to be lowered, which causes the piston tube 10 and the piston rod 19 to relatively move; When the piston rod 19 gradually moves to the top end of the corresponding piston tube 10, the light shielding elastic telescopic cover 6 is also gradually pressed and folded, in the process, the lower end of the piston tube 10 generates negative pressure, and then the suction hole 9 generates suction force through the one-way air suction hole 20, the linear channel on the piston rod 19 and the air channel 17, so that the dust in the light shielding elastic telescopic cover 6 can be sucked in; In the process, the piston column 23 gradually moves into the cavity tube 24, so that the gas in the cavity tube 24 is sprayed out from the jet holes 15 through the one-way air injection hole 27, the gas guide hole 30 and the annular air distribution groove 33, so that the dust around the camera 14 can be cleaned, and the suction force at the suction hole 9 can greatly reduce the dust in the light shielding elastic telescopic cover 6, so as to reduce the influence of the dust on the shooting effect of the camera 14.

[0025] In order to solve the problem that the device for visually detecting the quality of the welding quality can only shoot at a single angle and cannot provide photos of the component at different angles, so that the quality evaluation is not accurate enough, the following technical scheme is provided, specifically, a turning mechanism is arranged between the outer side of the mounting frame 13 and the lower end of the mounting seat 8.

[0026] The steering mechanism includes two guide grooves 31 located on the outer side of the upper end of the mounting bracket 13. Each guide groove 31 is slidably connected to one end of a corresponding guide rod 32. The other end of the guide rod 32 is fixedly connected to the lower end of the mounting base 8. The guide rod 32 is L-shaped. The two guide grooves 31 are symmetrically arranged about the axis of the upper end of the mounting bracket 13. Each guide groove 31 consists of two sections. The upper end of the guide groove 31 is a vertical straight groove, and the lower end of the guide groove 31 is a downward arc groove. The lower end of the straight groove and the upper end of the arc groove are smoothly connected.

[0027] according to Figure 8 When the mounting base 8 descends, the guide rod 32 connected to it will descend synchronously. When the guide rod 32 moves in the vertical straight groove part of the guide groove 31, it will not drive the mounting bracket 13 to rotate. When the guide rod 32 moves in the arc-shaped groove of the guide groove 31, it can drive the mounting bracket 13 to rotate. In turn, the rotation of the mounting bracket 13 can change the shooting angle of the camera 14, which helps to take pictures of the components from various angles and improves the accuracy of the assessment of the component soldering quality.

[0028] A vision-based solder repair inspection method for DIP (Dual In-line Package) processes, the method comprising: Step 1: First, place the repaired components on the corresponding positions on the workbench 1, and start the cylinder 4 through the control panel 2; When the cylinder 4 is started, the mounting plate 7 connected to its lower end descends synchronously. When the lower end of the light-shielding elastic telescopic cover 6 contacts the upper surface of the worktable 1, the mounting plate 7 continues to move, causing relative movement between the piston tube 10 and the piston rod 19, which in turn causes the spring 21 to be compressed. During the relative movement between the piston tube 10 and the piston rod 19, the light-shielding elastic telescopic cover 6 will also be gradually compressed. When the piston rod 19 gradually moves into the piston tube 10, it will generate negative pressure on the inner side of the lower end of the piston tube 10. Then, through the one-way suction hole 20, the linear channel on the piston rod 19 and the air passage 17, the suction force at the dust suction hole 9 will be generated so that the dust in the light-shielding elastic telescopic cover 6 will be sucked in and then discharged through the one-way exhaust hole 18. In addition, as the light-shielding elastic telescopic cover 6 is gradually compressed, the piston column 23 will gradually move into the cavity tube 24. During this process, the gas in the cavity tube 24 passes through the one-way air injection hole 27, the air guide hole 30 and the annular air dissipation groove 33 and is then ejected from the air jet hole 15 to clean the camera 14 and prevent dust from obstructing the camera 14 from shooting. Meanwhile, as the light-shielding elastic telescopic cover 6 is gradually compressed, the mounting base 8 will move downward with the light-shielding elastic telescopic cover 6, thereby causing the guide rod 32 to move in the vertical straight groove of the guide groove 31. Step two: after the piston rod 19 moves a certain distance in the corresponding piston tube 10, stop the air cylinder 4 through the control panel 2, and start the light supplement lamp 12, then take a picture of the component after the repair through the camera 14; Step three: continue to start the air cylinder 4 through the control panel 2, and the air cylinder 4 will drive the mounting seat 8 and the light shielding elastic telescopic cover 6 to continue to move downward after being started again; When the mounting seat 8 continues to move downward, the guide rod 32 will gradually slide from the vertical linear groove part to the arc-shaped groove part from the guide groove 31; When the guide rod 32 moves in the arc-shaped groove part, it will drive the mounting frame 13 to rotate, and then start the camera 14 through the control panel 2 to take a picture of the component again; Through two times of shooting, the quality of the component after the repair is detected.

[0029] The contents not described in detail in the specification belong to the prior art known by the person skilled in the art.

[0030] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A vision-based weld repair inspection device for DIP process, comprising a workbench (1) and a control panel (2) mounted on the workbench (1), characterized in that: A support base (3) is fixedly installed on the workbench (1), and a cylinder (4) is installed on the upper end of the support base (3) through a support frame (5). The telescopic end of the cylinder (4) is movably installed through the upper end of the support base (3), and the telescopic end of the cylinder (4) is connected to a mounting plate (7). A mounting seat (8) is installed below the mounting plate (7), and a light-shielding elastic telescopic cover (6) is connected to the lower end of the mounting seat (8). A dust-collecting mechanism is provided between the light-shielding elastic telescopic cover (6) and the mounting plate (7). Mounting columns (22) are evenly distributed on the lower surface of the upper end of the support base (3), and the lower ends of the mounting columns (22) movably penetrate the mounting plate (7) and the mounting seat (8) in sequence. The lower ends of the mounting columns (22) are connected to a support plate (26). The support plate (26) is located inside the light-shielding elastic telescopic cover (6). The lower end of the support plate (26) is connected to the mounting bracket (13) via a collar (29). Cameras (14) are installed at both ends of the lower surface of the mounting bracket (13). A jet dust removal mechanism is provided between the inner top of the mounting bracket (13) and the mounting base (8). The lower surface of the support plate (26) is fixedly connected to the connecting bracket (16) via a connecting column (28). The connecting bracket (16) is connected to the outer side of the mounting bracket (13) by a bearing. A mounting ring (11) is installed on the connecting bracket (16). A supplementary light (12) is installed at equal angles on the lower surface of the mounting ring (11). A steering mechanism is provided between the outer side of the mounting bracket (13) and the lower end of the mounting base (8).

2. The vision-based weld repair inspection device for DIP process according to claim 1, characterized in that: The dust collection mechanism includes an air passage (17) set at equal angles inside the light-shielding elastic telescopic cover (6), and the lower end of the air passage (17) passes through the dust collection hole (9) to the lower inner side of the light-shielding elastic telescopic cover (6). The lower surface of the mounting plate (7) is provided with a piston tube (10) at equal angles around the ring, and the lower inner side of the piston tube (10) is seamlessly slidably connected to the upper end of the corresponding piston rod (19). The lower end of the piston rod (19) is fixedly connected to the lower end of the mounting base (8), and a spring (21) is provided between the upper end of the piston rod (19) and the upper end of the corresponding piston tube (10).

3. The vision-based weld repair inspection device for DIP process according to claim 2, characterized in that: The lower end of the piston tube (10) is provided with a one-way exhaust hole (18), and the piston rod (19) is provided with a linear channel that communicates with the corresponding air passage (17), and the linear channel is connected to the inner side of the lower end of the corresponding piston tube (10) through a one-way intake hole (20).

4. A vision-based weld repair inspection device for DIP process according to claim 3, characterized in that: The jet dust removal mechanism includes a piston column (23) fixedly connected to the top of the mounting base (8). The upper surface of the support plate (26) is fixedly connected to a cavity tube (24) coaxial with it. The inner side of the upper end of the cavity tube (24) is seamlessly slidably connected to the lower end of the piston column (23). A one-way air inlet (25) is provided on the cavity tube (24), and the one-way air inlet (25) is located below the lower end of the piston column (23).

5. A vision-based weld repair inspection device for DIP process according to claim 4, characterized in that: Both ends of the collar (29) are connected to the lower end of the support plate (26) and the upper end of the mounting bracket (13) respectively by sealed bearings. The support plate (26) is provided with a one-way air injection hole (27) that runs through both sides of it. The one-way air injection hole (27) is connected to the cavity tube (24). The mounting bracket (13) is provided with an air guide hole (30) of the same shape.

6. A vision-based weld repair inspection device for DIP process according to claim 5, characterized in that: Both ends of the mounting bracket (13) are provided with annular air diffuser grooves (33), and air jet holes (15) extending to the lower surface of the mounting bracket (13) are provided at equal angles in the annular air diffuser grooves (33).

7. A vision-based weld repair inspection device for DIP process according to claim 6, characterized in that: The air jets (15) at both ends of the mounting bracket (13) are distributed at equal angles with respect to the corresponding cameras (14), and the air jets (15) are tilted and set directly below the cameras (14).

8. A vision-based weld repair inspection device for DIP process according to claim 7, characterized in that: The steering mechanism includes two guide grooves (31) located on the outer side of the upper end of the mounting bracket (13), and each guide groove (31) is slidably connected to one end of a corresponding guide rod (32). The other end of the guide rod (32) is fixedly connected to the lower end of the mounting base (8), and the guide rod (32) is L-shaped.

9. A vision-based weld repair inspection device for DIP process according to claim 8, characterized in that: The two guide grooves (31) are symmetrically arranged about the axis of the upper end of the mounting bracket (13), and the guide groove (31) is composed of two sections. The upper end of the guide groove (31) is a vertical straight groove, and the lower end of the guide groove (31) is an arc-shaped groove that curves downward. The lower end of the straight groove and the upper end of the arc-shaped groove are smoothly connected.

10. A vision-based solder repair inspection method for DIP processes, applied to the vision-based solder repair inspection device for DIP processes according to any one of claims 1-9, characterized in that: The method includes: Step 1: First, place the repaired components on the corresponding positions of the workbench (1) and start the cylinder (4) through the control panel (2); When the cylinder (4) is started, the mounting plate (7) connected to its lower end descends synchronously. When the lower end of the light-shielding elastic telescopic cover (6) contacts the upper surface of the worktable (1), the mounting plate (7) continues to move, causing relative movement between the piston tube (10) and the piston rod (19), which in turn causes the spring (21) to be compressed. During the relative movement between the piston tube (10) and the piston rod (19), the light-shielding elastic telescopic cover (6) will also be gradually compressed. When the piston rod (19) moves gradually into the piston tube (10), it will generate negative pressure on the inner side of the lower end of the piston tube (10), and then generate suction at the dust suction hole (9) through the one-way suction hole (20), the linear channel on the piston rod (19) and the air passage (17), so that the dust in the light-shielding elastic telescopic cover (6) is sucked in and then discharged through the one-way exhaust hole (18). In addition, as the light-shielding elastic telescopic cover (6) is gradually compressed, the piston column (23) will gradually move into the cavity (24). During this process, the gas in the cavity (24) passes through the one-way air injection hole (27), the air guide hole (30) and the annular air diffuser (33) and is then ejected from the jet hole (15) to clean the camera (14) and prevent dust from obstructing the camera (14) from shooting. Meanwhile, as the light-shielding elastic telescopic cover (6) is gradually compressed, the mounting base (8) will move downward with the light-shielding elastic telescopic cover (6), thereby causing the guide rod (32) to move in the vertical straight groove of the guide groove (31). Step 2: After the piston rod (19) moves a certain distance in the corresponding piston tube (10), the cylinder (4) is stopped through the control panel (2), and the fill light (12) is turned on. Then, the welded components are photographed through the camera (14). Step 3: Continue to start the cylinder (4) through the control panel (2). After the cylinder (4) is started again, it will drive the mounting base (8) and the light-shielding elastic telescopic cover (6) to continue to move downward. As the mounting base (8) continues to move downward, the guide rod (32) will gradually slide from the vertical straight groove part to the arc groove part from the guide groove (31); When the guide rod (32) moves in the arc groove, it will cause the mounting bracket (13) to rotate, and then the camera (14) will be activated through the control panel (2) to take another picture of the component; The quality of the components after resoldering was inspected by taking two photos.

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