A device and method for visually detecting defects on industrial control boards after cleaning

Abstract

The present invention discloses a device and method for visually inspecting defects on an industrial control board after cleaning, which relates to the field of optical inspection technology. The device and method include an inspection platform and an industrial control board, and also include a ring light installed on the inspection platform. A circuit box for the ring light to operate is fixedly installed on the ring light, and a heat dissipation module that cooperates with the ring light is installed on the inspection platform. The device has the advantages that: when inspecting defects on the surface of the industrial control board, a water-cooled radiator is used for heat dissipation, and the water-cooled radiator and the ring light are connected through a shock-absorbing platform, which can effectively reduce the impact of mechanical vibration on the ring light. At the same time, the device can automatically and adaptively dissipate heat according to the speed and heat generated by the ring heat, ensuring that the ring light is within its optimal operating temperature range, improving the operating efficiency of the ring light, changing the contact area between the water flow and the heat-conducting rod by changing the water flow channel, and ensuring the water flow speed and water flow stability, which can avoid the pulse vibration caused by variable frequency heat dissipation and the impact of the ring light operation.

Description

Technical Field

[0001] The present invention relates to the field of optical detection technology, and in particular to a device and method for visually detecting defects on a cleaned industrial control board. Background Art

[0002] As the core component of industrial automation equipment, the quality and reliability of industrial control boards directly affect the stability and safety of the entire production system. Problems such as short circuits, open circuits, and cold solder joints may cause signal transmission failures or abnormal circuit functions. Defect detection can detect and avoid equipment failures in advance. Therefore, during the production process of industrial control boards, the surface of the industrial control boards needs to be cleaned and then inspected for defects.

[0003] Currently, the commonly used defect detection method is optical inspection, which uses optical inspection equipment for fully automatic inspection. Publication No. CN119757385A discloses an environmentally friendly surface inspection device for the production of heat-dissipating copper tubes, which includes a detection table, an optical capture machine, a first heat-dissipating copper tube, a second heat-dissipating copper tube, and a third heat-dissipating copper tube. The top of the detection table is provided with a flipping component for assisting the first heat-dissipating copper tube, the second heat-dissipating copper tube, and the third heat-dissipating copper tube to rotate. The top of the detection table is provided with a fixing component for fixing the first heat-dissipating copper tube, the second heat-dissipating copper tube, and the third heat-dissipating copper tube. The setting of the flipping component facilitates the optical capture machine to photograph the defects, flaws or stains of the heat-dissipating copper tube, and enables the optical capture machine to photograph the copper tube surface from multiple angles.

[0004] The above-mentioned and existing optical inspection equipment generates a large amount of heat during operation. Air cooling is used for heat dissipation, but this heat dissipation method will generate vibration, causing the light to shake and affecting the detection effect. Therefore, water cooling is used for heat dissipation, which can effectively reduce vibration. However, there is a problem with water cooling, which is that it cannot change the heat dissipation efficiency in real time according to the heat generated by the ring light during operation. In this way, the temperature range of the ring light during operation cannot be controlled. Therefore, a variable frequency water pump is used to control the circulation frequency of the circulating water. This method of temperature control will generate pulses and still bring strong vibrations, resulting in unstable operation of the ring light.

[0005] Therefore, a new type of defect visual inspection device based on the cleaning of industrial control boards can be used to solve the shortcomings of the existing technology. Summary of the Invention

[0006] The purpose of the present invention is to solve the problem in the prior art that the vibration generated by temperature control affects the operation of the ring light, and to propose a visual defect detection device and method based on the cleaning of the industrial control board.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A device for visually inspecting defects on a cleaned industrial control board comprises a test bench and the industrial control board, and further comprises a ring light mounted on the test bench, a circuit box for operating the ring light being fixedly mounted on the ring light, and a heat dissipation module cooperating with the ring light being mounted on the test bench;

[0009] The heat dissipation module includes a water-cooled radiator and a cooling assembly. The cooling assembly and the water-cooled radiator are connected through a water outlet pipe and a water inlet pipe. The cooling assembly includes a circulation cylinder fixedly connected to the circuit box. The water inlet pipe and the water outlet pipe are connected to the circulation cylinder. The circuit box is equipped with a heat-conducting rod extending into the interior of the circulation cylinder.

[0010] A partition is fixedly installed in the circulation cylinder, and a plurality of water holes are opened on the partition. An inner tube is installed in the circulation cylinder, and a flow guide mechanism is matched with the heat conduction rod in the circulation cylinder. A diversion mechanism is installed on the inner tube, and a pressure regulating mechanism is installed on the partition.

[0011] Preferably, a movable track is installed on the detection table, a movable island is installed on the movable track via a driving member, and the circulation drum is fixedly connected to the movable island.

[0012] Preferably, the water-cooled radiator and the testing platform are connected via a vibration-damping platform, which is used to weaken the vibration generated during the operation of the water-cooled radiator.

[0013] Preferably, the flow guiding mechanism comprises a heat-conducting sleeve rotatably mounted on the heat-conducting rod, heat-conducting spiral blades are fixedly mounted on the heat-conducting sleeve, and a pushing structure matched with the heat-conducting sleeve is installed in the inner tube.

[0014] Preferably, the propulsion structure includes a turbine ring rotatably mounted inside the inner tube, and the turbine ring is fixedly connected to the heat-conducting sleeve.

[0015] Preferably, the diversion mechanism includes a first ring body slidably mounted on the inner tube, an annular base is fixedly mounted on the bottom of the circulation cylinder, a plurality of sealing plates are fixedly mounted on the first ring body and the base, and the plurality of sealing plates form a sealing ring under normal conditions, and a movable structure cooperating with the first ring body is installed on the inner tube.

[0016] Preferably, the movable structure comprises a third ring body fixedly mounted on the outside of the inner tube, and a second ring body is slidably mounted on the inner tube, and a plurality of second elastic telescopic rods are fixedly mounted between the third ring body and the second ring body;

[0017] A plurality of fixed blocks are fixedly installed on the outside of the inner tube, and a plurality of arc-shaped plastic plates are installed on each of the fixed blocks and the second ring body for common rotation. A telescopic rod extending into the inner tube is fixedly installed on each of the arc-shaped plastic plates, and a heat conducting plate is fixedly installed on the telescopic end of each of the telescopic rods. Each of the heat conducting plates is slidably connected to the heat conducting rod, and a plurality of blocking components cooperating with the corresponding telescopic rods are installed on the inner tube.

[0018] Preferably, the blocking component includes a sealing cover fixedly installed on the inner tube, the sealing cover is provided with a hole for the telescopic rod to slide, a sliding block matching the hole is slidably installed on the sealing cover, and the telescopic rod and the sliding block are slidably connected.

[0019] Preferably, the pressure regulating mechanism includes a first pressure regulating ring fixedly mounted on the partition, a plurality of first elastic telescopic rods fixedly mounted on the first pressure regulating ring, a second pressure regulating ring fixedly mounted on the telescopic ends of the plurality of first elastic telescopic rods, the second pressure regulating ring and the first pressure regulating ring are slidingly connected, and the outer rings of the second pressure regulating ring and the first pressure regulating ring are in close contact with the inner wall of the circulation cylinder.

[0020] The present invention also provides a method for visually detecting defects on a cleaned industrial control board, comprising the above-mentioned visual detection device for defects on a cleaned industrial control board, and further comprising the following steps:

[0021] S1. A feeding device is installed on the inspection table. The industrial control board is placed on the feeding device and is transported to the bottom of the ring light by the feeding device. The feeding device is then stopped and the ring light is controlled to detect defects on the surface of the industrial control board.

[0022] S2. Since the industrial control board is tested on the assembly line, the ring light operates for a long time and generates a lot of heat. At this time, the water-cooled radiator will discharge water from the water inlet pipe into the circulation cylinder, then pass through the water holes on the partition to the top of the partition, and then return to the water-cooled radiator through the water outlet pipe. During this process, the water flow will take away the heat from the heat conducting rod, realizing water circulation heat dissipation;

[0023] S3. During the water circulation process, the water in the circulation cylinder will be diverted through the diversion mechanism, increasing the contact area between the water and the heat conduction rod, thereby accelerating the heat dissipation speed;

[0024] As the ring light operates for a longer time, it generates more and more heat. At this time, it is necessary to control the heat dissipation efficiency to ensure that the ring light operates within its optimal operating temperature range. As the heat increases, the diversion mechanism alone cannot meet the rapid heat dissipation requirements of the heat-conducting rod. At this time, the heat on the heat-conducting rod will be transferred to the diversion mechanism, triggering the diversion mechanism to operate, allowing some water to enter the inner tube, realizing the diversion of water in the circulation cylinder. This can increase the contact area between the water flow and the heat-conducting rod, improve the heat dissipation efficiency, and at the same time will not generate pulse vibration, reducing the impact on the operation of the ring light;

[0025] Since part of the water in the circulation cylinder will flow out of the inner tube, the amount of water passing through the water holes on the partition is reduced, which means that the water flow rate is reduced, which will affect the operating efficiency of the diversion mechanism. Therefore, a pressure regulating mechanism is set up. When the water flow rate is reduced, the pressure regulating mechanism is used to reduce the space in the circulation cylinder, thereby increasing the pressure in the circulation cylinder, thereby ensuring the water flow rate, achieving stable flow, and small vibration amplitude.

[0026] Compared with the existing technology, the advantages of the present invention are:

[0027] 1. When using a ring light to inspect the surface of an industrial control board, this device dissipates the heat generated by the circuit box during operation by installing a water-cooled radiator, a circulation cylinder, and a heat-conducting rod. A vibration damping platform is installed between the water-cooled radiator and the inspection table to reduce vibration transmission. This can effectively reduce the impact of heat dissipation on the operation of the ring light, making the ring light inspection more accurate.

[0028] 2. When this industrial control board defect detection device uses a ring light to inspect the surface of the industrial control board, the heat dissipation sleeve and heat dissipation spiral blades are set to effectively increase the contact area between the water flow and the heat conducting rod, thereby accelerating the heat dissipation on the heat conducting rod. At the same time, the heat dissipation spiral blades are driven to rotate under the action of the water flow, stirring the water on the upper part of the circulation tube partition, thereby improving the heat dissipation efficiency of the water flow.

[0029] 3. When the industrial control board defect detection device uses a ring light to detect the surface of the industrial control board, the first ring body is driven to move by the moving structure to bend the sealing plate. After the bending, the sealing plate loses its sealing of the space between the inner tube and the base. The water will flow from the inner tube to the top of the partition through the gap in the sealing plate, realizing the diversion of the water flow inside the circulation tube, increasing the contact area between the water flow and the large heating rod, and improving the heat dissipation efficiency. The pressure inside the circulation tube is adjusted by the pressure regulating mechanism to ensure the stability of the water flow, reduce the probability of pulse generation, and effectively reduce the impact of vibration on the operation of the ring light.

[0030] In summary, the present invention utilizes a water-cooled radiator for heat dissipation when performing surface defect detection on an industrial control board, and the water-cooled radiator is connected to the ring light via a vibration damping platform, which can effectively reduce the impact of mechanical vibration on the ring light. At the same time, when the ring light is operating, it can automatically and adaptively dissipate heat based on the speed and amount of heat generated by the ring light, ensuring that the ring light is within its optimal operating temperature range and improving the operating efficiency of the ring light. In addition, when adaptively adjusting the heat dissipation efficiency, the contact area between the water flow and the heat conducting rod is changed by changing the water flow channel, and the water flow speed and water flow stability are ensured, thereby avoiding the pulse vibration generated by variable frequency heat dissipation and the impact of the ring light operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, wherein:

[0032] Figure 1 This is a schematic diagram of the structure of a visual inspection device for defects on industrial control panels after cleaning, proposed by the present invention;

[0033] Figure 2 for Figure 1 Detailed schematic diagram of the structure after rotation at a certain angle;

[0034] Figure 3 for Figure 1 Enlarged structural diagram of components such as the central ring light, movable track, and water-cooled radiator;

[0035] Figure 4 for Figure 3 A detailed diagram of the enlarged structure of the central ring light and cooling assembly;

[0036] Figure 5 for Figure 4 A top view of the plan;

[0037] Figure 6 for Figure 5 Cross-sectional view of the middle circulation cylinder along AA;

[0038] Figure 7 for Figure 6 Detailed diagram of the structure after removing the ring light and rotating it to a certain angle;

[0039] Figure 8 for Figure 7 Detailed schematic diagram of the structure after rotation at a certain angle;

[0040] Figure 9 for Figure 8 Detailed schematic diagram of the structure after removing the circulation cylinder, water inlet pipe, water outlet pipe and circuit box;

[0041] Figure 10 for Figure 9Detailed schematic diagram of the structure after removing the pressure regulating mechanism;

[0042] Figure 11 for Figure 10 Detailed diagram of the structure after removing the partition and the heat-conducting spiral blades and rotating them at a certain angle;

[0043] Figure 12 for Figure 11 Detailed diagram of the structure after the blocking plate is bent and water enters from the inner pipe;

[0044] Figure 13 for Figure 12 Detailed schematic diagram of the structure after removing the heat-conducting sleeve, inner tube and other components inside the inner tube and rotating it at a certain angle;

[0045] Figure 14 for Figure 13 A detailed schematic diagram of the enlarged structure of the first ring body, the second ring body, the third ring body and their surrounding components;

[0046] Figure 15 for Figure 14 A schematic diagram of the enlarged structure of one of the arc-shaped plastic plates and its surrounding components;

[0047] Figure 16 for Figure 15 Detailed diagram of the exploded structure of the middle sealing cover and the sliding block;

[0048] Figure 17 for Figure 9 Detailed schematic diagram of the structure of the medium pressure regulating mechanism;

[0049] Figure 18 for Figure 17 Side plan view of

[0050] Figure 19 for Figure 18 Detailed schematic diagram of the three-dimensional structure along the BB section;

[0051] Figure 20 for Figure 10 A schematic diagram of the enlarged structure of the heat-conducting spiral blades and the heat-conducting rod;

[0052] Figure 21 for Figure 20 Detailed schematic diagram of the structure after removing the heat-conducting spiral blades and heat-conducting rods and rotating them to a certain angle;

[0053] Figure 22 for Figure 21 Detailed schematic diagram of the cross-sectional structure of the medium speed increasing ring along one direction.

[0054] In the figure: 1 testing table, 2 industrial control board, 3 moving track, 4 ring light, 5 water cooling radiator, 6 shock absorption table, 7 cooling assembly, 8 circulation cylinder, 9 circuit box, 10 base, 11 water outlet pipe, 12 pressure regulating mechanism, 13 heat-conducting spiral blade, 14 partition, 15 water inlet pipe, 16 heat-conducting rod, 17 inner tube, 18 heat-conducting sleeve, 19 turbine ring, 20 first ring body, 21 second ring body, 22 third ring body, 23 blocking plate, 24 arc-shaped plastic plate, 25 heat-conducting plate, 26 telescopic rod, 27 sealing cover, 28 sliding block, 29 first pressure regulating ring, 30 second pressure regulating ring, 31 first elastic telescopic rod, 32 speed-increasing ring, 33 speed-increasing hole, 34 second elastic telescopic rod. DETAILED DESCRIPTION

[0055] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0056] Example 1: Reference Figure 1-Figure 3 A device for visually inspecting defects on a cleaned industrial control board includes a test platform 1 and an industrial control board 2, a ring light 4 mounted on the test platform 1, a circuit box 9 for operating the ring light 4 fixedly mounted on the ring light 4, and a heat dissipation module matched with the ring light 4 mounted on the test platform 1;

[0057] The testing platform 1 is provided with a movable track 3, on which a movable island is provided via a driving member, and a circulating drum 8 is fixedly connected to the movable island.

[0058] The driving member can be a transmission crawler, which is used for water flow detection of the industrial control board 2. Since it is an existing technology, it will not be explained in detail here, and its specific structure is not specifically shown. The position of the ring light 4 on the mobile island can be changed by the driving member according to the position of the industrial control board 2 to ensure that the ring light 4 is located directly above the industrial control board 2;

[0059] The mobile island can also automatically change the angle of the ring light 4 and can be used to calibrate the position of the ring light 4 during long-term use to ensure that the ring light 4 is level.

[0060] Example 2: This example differs from the example 1 in that: Figure 3-Figure 22 The heat dissipation module includes a water-cooled radiator 5 and a cooling assembly 7. The cooling assembly 7 is connected to the water-cooled radiator 5 through a water outlet pipe 11 and a water inlet pipe 15. The cooling assembly 7 includes a circulation cylinder 8 fixedly connected to a circuit box 9. The water inlet pipe 15 and the water outlet pipe 11 are connected to the circulation cylinder 8. A heat conducting rod 16 is installed on the circuit box 9 and extends into the interior of the circulation cylinder 8.

[0061] The water-cooled radiator 5 is connected to the test platform 1 through a shock-absorbing platform 6, which is used to weaken the vibration generated when the water-cooled radiator 5 is in operation; the shock-absorbing platform 6 is an existing device that can effectively prevent the vibration from being transmitted to the test platform 1, and can reduce the probability of the test platform 1 generating vibration, thereby reducing the impact of the vibration on the ring light 4.

[0062] A partition 14 is fixedly installed in the circulation cylinder 8, and a plurality of water holes are opened on the partition 14. An inner tube 17 is installed in the circulation cylinder 8, and a flow guide mechanism is matched with the heat conducting rod 16 in the circulation cylinder 8;

[0063] The water-cooled radiator 5 consists of a water tank, a water pump, and a cooling fan. The water tank is connected to a water inlet pipe 15 and a water outlet pipe 11. The water pump transports the water in the water tank through the water inlet pipe 15 to the circulation drum 8, and then returns the water from the water outlet pipe 11 on the circulation drum 8 to the water tank, thus realizing water circulation. The cooling fan then dissipates heat from the water in the water tank. Since the water-cooled radiator 5 is a basic and common existing heat dissipation device, only a simple structural principle thereof is explained here, and its specific structure is not shown.

[0064] Water flows in the circulation drum 8 and passes through the water holes on the partition 14. The partition 14 divides the circulation drum 8 into two upper and lower cavities. The heat-conducting rod 16 passes through the partition 14 and penetrates the upper and lower cavities. The inner tube 17 wraps a part of the heat-conducting rod 16 located in the lower cavity.

[0065] refer to Figure 4-10 、 Figure 20-22 The flow guiding mechanism includes a heat-conducting sleeve 18 rotatably mounted on the heat-conducting rod 16 , a heat-conducting spiral blade 13 is fixedly mounted on the heat-conducting sleeve 18 , and a pushing structure matched with the heat-conducting sleeve 18 is installed in the inner tube 17 ;

[0066] When the water flows through the water hole and enters the upper cavity of the circulation cylinder 8, the water will first contact the heat-conducting spiral blades 13, and will drive the heat-conducting spiral blades 13 to rotate under the impact force of the water flow. The heat-conducting rod 16, the heat-conducting spiral blades 13 and the heat-conducting sleeve 18 are all made of heat-conducting metal material. The heat on the heat-conducting rod 16 will be conducted to the heat-conducting spiral blades 13 through the heat-conducting sleeve 18. Since the contact area between the heat-conducting spiral blades 13 and the water is larger than the contact area between the heat-conducting rod 16, the heat dissipation efficiency is higher.

[0067] The propulsion structure includes a turbine ring 19 rotatably mounted inside the inner tube 17 , and the turbine ring 19 is fixedly connected to the heat-conducting sleeve 18 ;

[0068] When a part of the water flows into the inner tube 17 from the circulation drum 8, the water will rush upward from the inner tube 17. The water flow will impact the turbine ring 19 and drive the turbine ring 19 to rotate. A speed-increasing ring 32 is fixedly installed in the inner tube 17. A plurality of speed-increasing holes 33 are opened on the speed-increasing ring 32. The speed-increasing holes 33 are funnel-shaped, which can accelerate the water flow speed (Venturi pipe principle, which is not explained in detail here), thereby increasing the impact force of the water flow on the heat-conducting spiral blades 13, making the heat-conducting spiral blades 13 rotate faster, making the water above the partition 14 in the circulation drum 8 flow faster, and accelerating the heat dissipation speed.

[0069] refer to Figures 11-16 , a diversion mechanism is installed on the inner tube 17;

[0070] The diversion mechanism includes a first ring body 20 slidably mounted on the inner tube 17, an annular base 10 is fixedly mounted on the bottom of the circulation drum 8, and a plurality of blocking plates 23 are fixedly mounted on the first ring body 20 and the base 10. The plurality of blocking plates 23 form a sealing ring in a normal state. A movable structure that cooperates with the first ring body 20 is installed on the inner tube 17;

[0071] The first ring body 20 is driven to move by the moving structure, and the movement of the first ring body 20 drives the blocking plate 23 and the end fixed to the first ring body 20 to move (in the initial state, the blocking plate 23 has a certain curvature, and applying a pressure vertically parallel to the blocking plate 23 on one end of the blocking plate 23 will cause the blocking plate 23 to bend and deform), thereby causing the blocking plate 23 to bend and deform. At this time, the distance between two adjacent blocking plates 23 increases, and the water in the circulation drum 8 will enter the inner tube 17 through the gap between the blocking plates 23, and then enter the cavity above the partition 14 through the inner tube 17;

[0072] The mobile structure includes a third ring body 22 fixedly mounted on the outside of the inner tube 17, and a second ring body 21 is slidably mounted on the inner tube 17. The first ring body 20 and the second ring body 21 are fixedly connected by a support rod. A plurality of second elastic telescopic rods 34 are fixedly mounted between the third ring body 22 and the second ring body 21;

[0073] A plurality of fixed blocks are fixedly mounted on the outside of the inner tube 17. A plurality of arc-shaped plastic plates 24 are mounted on each fixed block and rotated together with the second ring body 21. A telescopic rod 26 extending into the interior of the inner tube 17 is fixedly mounted on each arc-shaped plastic plate 24. A heat conducting plate 25 is fixedly mounted on the telescopic end of each telescopic rod 26. Each heat conducting plate 25 is slidably connected to the heat conducting rod 16. A plurality of blocking components that cooperate with corresponding telescopic rods 26 are mounted on the inner tube 17.

[0074] When the heat on the heat-conducting rod 16 increases, the heat-conducting plate 25 conducts the heat to the arc-shaped plastic plate 24 through the telescopic rod 26 (the arc-shaped plastic plate 24 is made of plastic material. When the temperature rises, the internal molecular activity thereof intensifies, the plate becomes softer, and its elastic force becomes smaller. Conversely, when the temperature rises, its elastic force recovers). The temperature rise reduces the elasticity of the arc-shaped plastic plate 24. At this time, the elastic force of the second elastic telescopic rod 34 is greater than the elastic force of the arc-shaped plastic plate 24, which pushes the second ring body 21 to move. Since one end of the arc-shaped plastic plate 24 is fixed by a fixed block, the telescopic rod 26 will also move with the deformation of the arc-shaped plastic plate 24. Since the first ring body 20 and the second ring body 21 are fixedly connected by a support rod, the second ring body 21 will drive the first ring body 20 to move, thereby squeezing the blocking plate 23 to deform the blocking plate 23.

[0075] When the temperature on the heat-conducting rod 16 drops, the temperature on the arc-shaped plastic plate 24 drops, and the elasticity is automatically restored, pushing the second ring body 21 to move, thereby driving the first ring body 20 to move, and restoring the blocking plate 23.

[0076] Since the telescopic rod 26 extends into the inner tube 17, a square hole needs to be opened on the inner tube 17. In order to prevent water from entering through the square hole and causing obstruction of the movement of the telescopic rod 26, and also causing water leakage in the inner tube 17 when no diversion is done, a blocking member needs to be used to block the square hole.

[0077] The blocking member includes a sealing cover 27 that is fixedly mounted on the inner tube 17 and has a hole for the telescopic rod 26 to slide through. A sliding block 28 that fits in the hole is slidably mounted on the sealing cover 27, and the telescopic rod 26 and the sliding block 28 are in sliding connection.

[0078] The sealing cover 27 is just stuck in the square hole. When the telescopic rod 26 moves, it will drive the sliding block 28 to move. The length of the sliding block 28 is greater than the length of the hole. When the sliding block 28 moves to the lower end and the upper end, the sliding block 28 still blocks the hole, and water will not flow into the inner tube 17 from the hole.

[0079] refer to Figure 9 、 Figure 17-Figure 19 , a pressure regulating mechanism 12 is mounted on the partition 14;

[0080] The pressure regulating mechanism 12 includes a first pressure regulating ring 29 fixedly mounted on the partition 14, a plurality of first elastic telescopic rods 31 fixedly mounted on the first pressure regulating ring 29, and a second pressure regulating ring 30 fixedly mounted on the telescopic ends of the plurality of first elastic telescopic rods 31. The second pressure regulating ring 30 is slidably connected to the first pressure regulating ring 29, and the outer rings of the second pressure regulating ring 30 and the first pressure regulating ring 29 are in close contact with the inner wall of the circulation cylinder 8;

[0081] When part of the water in the circulation drum 8 flows out of the inner tube 17, the amount of water passing through the water holes on the partition 14 decreases, which means that the water flow rate decreases. At this time, the thrust of the water flowing from bottom to top decreases (the thrust here refers to the thrust of the water flow on the second pressure regulating ring 30), and the elastic force of the first elastic telescopic rod 31 and the gravity of the second pressure regulating ring 30 remain unchanged, so the second pressure regulating ring 30 will move downward. At this time, the space through which the water flow in the circulation drum 8 can pass is reduced, and the degree of reduction is consistent with the internal space of the inner tube 17. In this way, part of the pressure flowing out of the inner tube 17 can be replenished to increase the pressure after diversion in the circulation drum 8, thereby ensuring the water flow rate, achieving stable flow, and small vibration amplitude.

[0082] The specific operating steps of this device are as follows:

[0083] Place the industrial control board 2 on the feeding device, and use the feeding device to convey the industrial control board 2 to the bottom of the ring light 4. Then stop the feeding device, and then control the ring light 4 to operate, and use the ring light 4 to detect defects on the surface of the industrial control board 2.

[0084] Since the industrial control board 2 is tested on the assembly line, the ring light 4 operates for a long time and generates a lot of heat. At this time, the water-cooled radiator 5 will discharge water from the water inlet pipe 15 into the circulation tube 8, and then pass through the water holes on the partition 14 to enter the upper part of the partition 14, and then return to the water-cooled radiator 5 through the water outlet pipe 11. During this process, the water flow will take away the heat on the heat-conducting rod 16, realizing water circulation heat dissipation;

[0085] During the water circulation process, the water in the circulation drum 8 enters the upper cavity through the water holes on the partition 14 and contacts the heat-conducting spiral blades 13. The water flow drives the heat-conducting spiral blades 13 to rotate, increasing the contact area between the water and the heat-conducting rods 16 while stirring the water flow in the upper cavity to dissipate heat, thereby accelerating the heat dissipation efficiency.

[0086] As the operating time of the ring light 4 increases, more and more heat is generated. At this time, it is necessary to control the heat dissipation efficiency to ensure that the ring light 4 operates within its optimal operating temperature range. As the heat increases, the heat on the heat conducting rod 16 increases. At this time, the heat conducting plate 25 transfers the heat to the arc-shaped plastic plate 24 through the telescopic rod 26. The temperature increase reduces the elasticity of the arc-shaped plastic plate 24. At this time, the elastic force of the second elastic telescopic rod 34 is greater than the elastic force of the arc-shaped plastic plate 24, which will push the second ring body 21 to move. Since one end of the arc-shaped plastic plate 24 is fixed by the fixing block, the telescopic rod 26 will also move with the deformation of the arc-shaped plastic plate 24.

[0087] Since the first ring body 20 and the second ring body 21 are fixedly connected by the support rod, the second ring body 21 drives the first ring body 20 to move, thereby squeezing the blocking plate 23 and deforming the blocking plate 23, so that part of the water enters the inner tube 17 through the gap between the blocking plates 23, thereby realizing the diversion of the water in the circulation cylinder 8. This can increase the contact area between the water flow and the heat conducting rod 16, improve the heat dissipation efficiency, and at the same time will not generate pulse vibration, reducing the impact on the operation of the ring light 4;

[0088] Since part of the water in the circulation drum 8 will flow out from the inner tube 17, the amount of water passing through the water hole on the partition 14 is reduced, which means that the water flow rate is reduced, which will affect the operating efficiency of the diversion mechanism. Therefore, a pressure regulating mechanism 12 is provided. While the water flow rate is reduced, the pressure regulating mechanism 12 is utilized to reduce the space in the circulation drum 8, thereby increasing the pressure in the circulation drum 8, thereby ensuring the water flow rate, achieving stable flow, and small vibration amplitude.

[0089] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A visual inspection device for defects on an industrial control board after cleaning, comprising a detection table (1) and an industrial control board (2), characterized in that: It also includes a ring light (4) mounted on the test bench (1), a circuit box (9) for the operation of the ring light (4) being fixedly mounted on the ring light (4), and a heat dissipation module matched with the ring light (4) being mounted on the test bench (1); The heat dissipation module includes a water-cooled radiator (5) and a cooling assembly (7), the cooling assembly (7) and the water-cooled radiator (5) are connected via a water outlet pipe (11) and a water inlet pipe (15), the cooling assembly (7) includes a circulation cylinder (8) fixedly connected to a circuit box (9), the water inlet pipe (15) and the water outlet pipe (11) are connected to the circulation cylinder (8), and a heat conducting rod (16) is installed on the circuit box (9) and extends into the interior of the circulation cylinder (8); A partition (14) is fixedly installed in the circulation cylinder (8), and a plurality of water holes are opened on the partition (14). An inner tube (17) is installed in the circulation cylinder (8), and a flow guide mechanism is matched with the heat conducting rod (16) in the circulation cylinder (8). A flow diversion mechanism is installed on the inner tube (17), and a pressure regulating mechanism (12) is installed on the partition (14); The diversion mechanism includes a first ring body (20) slidably mounted on the inner tube (17), a ring-shaped base (10) is fixedly mounted on the bottom of the circulation cylinder (8), a plurality of blocking plates (23) are fixedly mounted on the first ring body (20) and the base (10), and the plurality of blocking plates (23) form a sealing ring in a normal state, and a movable structure matched with the first ring body (20) is mounted on the inner tube (17), and the movable structure includes a third ring body (22) fixedly mounted on the outside of the inner tube (17), and a second ring body (21) is slidably mounted on the inner tube (17), and the third ring body (22) and the second ring body (21) are fixedly mounted on the inner tube (17). A plurality of second elastic telescopic rods (34) are fixedly installed between the inner tube (17), a plurality of fixed blocks are fixedly installed on the outside of the inner tube (17), and a plurality of arc-shaped plastic plates (24) are installed on each of the fixed blocks and the second ring body (21) for rotation together. A telescopic rod (26) extending into the inner tube (17) is fixedly installed on each of the arc-shaped plastic plates (24), and a heat conducting plate (25) is fixedly installed on the telescopic end of each of the telescopic rods (26). Each of the heat conducting plates (25) and the heat conducting rod (16) is slidably connected, and a plurality of blocking components matching the corresponding telescopic rods (26) are installed on the inner tube (17).

2. The device for visually inspecting defects on industrial control boards after cleaning according to claim 1, characterized in that: A movable track (3) is installed on the detection platform (1), a movable island is installed on the movable track (3) via a driving member, and the circulation drum (8) is fixedly connected to the movable island.

3. The device for visually inspecting defects on industrial control boards after cleaning according to claim 1, characterized in that: The water-cooled radiator (5) and the testing platform (1) are connected via a vibration-damping platform (6), which is used to weaken the vibration generated when the water-cooled radiator (5) is in operation.

4. The device for visually inspecting defects on industrial control panels after cleaning according to claim 1, characterized in that: The flow guiding mechanism comprises a heat-conducting sleeve (18) rotatably mounted on a heat-conducting rod (16), a heat-conducting spiral blade (13) being fixedly mounted on the heat-conducting sleeve (18), and a pushing structure matched with the heat-conducting sleeve (18) being mounted in the inner tube (17).

5. The device for visually inspecting defects on industrial control panels after cleaning according to claim 4, characterized in that: The propulsion structure comprises a turbine ring (19) rotatably mounted inside the inner tube (17), and the turbine ring (19) is fixedly connected to the heat-conducting sleeve (18).

6. The device for visually inspecting defects on industrial control boards after cleaning according to claim 1, characterized in that: The blocking component comprises a sealing cover (27) which is fixedly mounted on the inner tube (17). The sealing cover (27) is provided with a hole for the telescopic rod (26) to slide. A sliding block (28) which matches the hole is slidably mounted on the sealing cover (27). The telescopic rod (26) and the sliding block (28) are in sliding connection with each other.

7. The device for visually inspecting defects on industrial control panels after cleaning according to claim 1, characterized in that: The pressure regulating mechanism (12) includes a first pressure regulating ring (29) fixedly mounted on the partition (14), a plurality of first elastic telescopic rods (31) fixedly mounted on the first pressure regulating ring (29), a second pressure regulating ring (30) fixedly mounted on the telescopic ends of the plurality of first elastic telescopic rods (31), the second pressure regulating ring (30) and the first pressure regulating ring (29) being in sliding connection, and the outer rings of the second pressure regulating ring (30) and the first pressure regulating ring (29) being in close contact with the inner wall of the circulation cylinder (8).

8. A method for visually inspecting defects on an industrial control board after cleaning, used in the device for visually inspecting defects on an industrial control board after cleaning as claimed in any one of claims 1 to 7, characterized in that: The following steps are involved: S1. A feeding device is installed on the inspection table (1). The industrial control board (2) is placed on the feeding device. The industrial control board (2) is transported to the position directly below the ring light (4) by the feeding device. The feeding device is then stopped. The ring light (4) is then controlled to operate. The surface defects of the industrial control board (2) are inspected by the ring light (4). S2. Since the industrial control board (2) is tested on the assembly line, the ring light (4) operates for a long time and generates a lot of heat. At this time, the water-cooled radiator (5) will discharge water from the water inlet pipe (15) into the circulation tube (8), and then pass through the water hole on the partition (14) to enter the upper part of the partition (14), and then return to the water-cooled radiator (5) from the water outlet pipe (11). During the process, the water flow will take away the heat on the heat conducting rod (16), realizing water circulation heat dissipation; S3. During the water circulation process, the water in the circulation cylinder (8) is diverted through the diversion mechanism, thereby increasing the contact area between the water and the heat-conducting rod (16), thereby accelerating the heat dissipation speed; As the operating time of the ring light (4) increases, more and more heat is generated. At this time, it is necessary to control the heat dissipation efficiency to ensure that the ring light (4) operates within its optimal operating temperature range. As the heat increases, the heat dissipation on the heat-conducting rod (16) cannot be satisfied by the guide mechanism alone. At this time, the heat on the heat-conducting rod (16) will be transferred to the diversion mechanism, triggering the diversion mechanism to operate, so that part of the water enters the inner tube (17), realizing the diversion of the water in the circulation cylinder (8). This can increase the contact area between the water flow and the heat-conducting rod (16), improve the heat dissipation efficiency, and at the same time will not generate pulse vibration, reducing the impact on the operation of the ring light (4); Since part of the water in the circulation drum (8) will flow out of the inner tube (17), the amount of water passing through the water hole on the partition (14) is reduced, which means that the water flow rate is reduced, which will affect the operation efficiency of the diversion mechanism. Therefore, a pressure regulating mechanism (12) is provided. When the water flow rate is reduced, the pressure regulating mechanism (12) is used to reduce the space in the circulation drum (8), thereby increasing the pressure in the circulation drum (8), thereby ensuring the water flow rate, achieving stable flow, and small vibration amplitude.

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