New material conformal coating coating quality detection equipment

Abstract

The invention belongs to the technical field of coating quality detection, and particularly relates to novel material conformal coating coating quality detection equipment which comprises a base box and an operation panel which are mounted on a detection table, the protective cover is mounted on the base box, and a cover plate is detachably mounted at the top of the protective cover; the industrial camera is arranged on the cover plate, and a lens of the industrial camera faces the interior of the base box; the ultraviolet light source is arranged in the protective cover; the loading plate is arranged in the base box; the multiple sets of pressing mechanisms are arranged in the protective cover and used for pressing and fixing the LED lamp row which is placed on the carrying plate and coated with the new material conformal coating; the plurality of groups of feeding reversing mechanisms are arranged on the loading plate and are used for sending the detected LED lamp rows out of the base box; a feeding port and a discharging port are formed in the connecting position of the protective cover and the base box. According to the scheme, the defects of missed coating, non-uniform coating, pollution of a coating forbidden area and the like can be accurately and automatically judged, so that the quality of the new material conformal coating coated on the LED lamp bank can be quickly detected and treated.

Description

Technical Field

[0001] This invention belongs to the field of coating quality testing technology, and in particular relates to a new material conformal coating quality testing device. Background Technology

[0002] Conformal coating is a protective coating used for electronic components and PCB boards. Its core functions are "moisture-proof, salt spray-proof, and mildew-proof". It can also assist in dust prevention, corrosion prevention, and insulation, extending the service life of electronic equipment in harsh environments. Transparent conformal coatings are the preferred type for LED light strips and precision electronic equipment, and are also the most mainstream conformal coatings on the market. Although existing industrial cameras can be used to inspect the quality of the transparent conformal coating on LED light strips, the transparent conformal coating itself has no obvious markings under visible light. If an industrial camera is used alone for inspection, it is difficult to distinguish the boundaries and defects of the conformal coating on the LED light strip. This can easily lead to defects such as missed coating, uneven coating, runs, contamination of restricted areas, and abnormal thickness. Summary of the Invention

[0003] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: This invention relates to a new type of conformal coating quality testing equipment, comprising a base box and an operation panel mounted on a testing platform; further comprising: a protective cover mounted on the base box, with a cover plate detachably mounted on its top; an industrial camera mounted on the cover plate, with its lens facing inwards from the base box; an ultraviolet light source mounted inside the protective cover; a carrying plate mounted inside the base box; a clamping mechanism, several of which are assembled inside the protective cover, for clamping and fixing the LED light array coated with the new material conformal coating placed on the carrying plate; and a feeding reversing mechanism, several of which are assembled on the carrying plate, for conveying the tested LED light array out of the base box. The protective cover and the base box are provided with a feed inlet and a discharge outlet.

[0004] As a preferred embodiment of the present invention, the clamping mechanism includes an electric push rod installed at the four corners inside the protective cover, a connecting column installed at the output end of the electric push rod, a blind slot for insertion opened at the bottom end of the connecting column, a clamping block installed in the blind slot by screws, and a clamping block installed on the clamping block at a right angle.

[0005] As a preferred embodiment of the present invention, the feeding reversing mechanism includes an annular hole opened on the carrier plate, a cylindrical seat movably installed in the annular hole, a roller rotatably installed in the cylindrical seat, a mounting box located in the base box, and a motor installed in the mounting box and connected to the cylindrical seat.

[0006] As a preferred embodiment of the present invention, the pressing mechanism and the feeding reversing mechanism are connected by a lifting linkage assembly. The lifting linkage assembly includes a guide sleeve installed at the corner of the carrying plate, a lifting guide groove opened at the corner of the base box, a push rod movably inserted into the guide sleeve and extending into the lifting guide groove, a guide slide installed on the push rod, a connecting ring installed outside the mounting box, a connecting lug formed on the outer ring surface of the connecting ring and connected to the guide slide, and springs respectively connected to the bottom of the mounting box and the push rod. The top of the push rod is vertically aligned with the connecting column, and the push rod and the pressure block are staggered and aligned.

[0007] As a preferred embodiment of the present invention, a movable cavity is provided inside the pressing block, and the bottom of the movable cavity and the cavity wall near the center of the base box are both opened through it. A pressing strip is movably installed inside the movable cavity by means of a pushing component.

[0008] As a preferred embodiment of the present invention, the pushing assembly includes a first nut mounted on the back of the pressure strip, a second nut extending through the back of the moving cavity, and threaded posts of different lengths that are threadedly connected to the first nut and the second nut. A spring is connected between the pressing strip and the cavity wall of the moving cavity, and a hexagonal hole is provided at the outer end of the threaded column; adjustment holes are provided on the side walls of the protective cover that are not inlet and outlet.

[0009] As a preferred embodiment of the present invention, a feeding mechanism is provided on the side of the base box near the feed inlet. The feeding mechanism includes at least two guide rods horizontally mounted on the side wall of the base box, a stop bar mounted on the tail end of the two guide rods, a sliding support plate movably mounted on the two guide rods, a ball screw rotatably mounted between the two guide rods, a screw nut connecting the sliding support plate and the ball screw, a moving plate mounted on the inner side of the sliding support plate, and a bearing plate mounted at the feed inlet. The tail of the baffle is equipped with a servo motor for driving the ball screw to rotate, and the moving plate, the bearing plate and the bottom of the feed inlet are all in the same plane.

[0010] As a preferred embodiment of the present invention, two discharge ports are provided, and a receiving platform is installed at each discharge port, and a baffle is installed on the receiving platform away from the discharge port.

[0011] The present invention has the following beneficial effects: This solution utilizes a protective cover installed above the base box, with an industrial camera and ultraviolet light source inside. Since the conformal coating on the LED strips contains fluorescent agents, when the LED strips are laid flat on the inspection area of ​​the carrier plate, the ultraviolet light source inside the protective cover illuminates the LED strips, and the industrial camera captures fluorescent images. By identifying the integrity, brightness uniformity, and boundary position of the fluorescent area, defects such as missed coating, uneven coating, and contamination in restricted areas are automatically determined, thus enabling rapid detection and processing of the quality of the new conformal coating on the LED strips. By coordinating a clamping mechanism and a feeding reversing mechanism within the base box, when several sets of clamping mechanisms are engaged, several sets of feeding reversing mechanisms can simultaneously descend below the surface of the carrier plate. This allows the clamping mechanism to press the LED array flat onto the carrier plate, enabling the industrial camera and UV light source to work together to accurately inspect the conformal coating on the LED array. The descending feeding reversing mechanism prevents the LED array from bulging on the carrier plate, which would otherwise affect the industrial camera's ability to accurately capture the fluorescent image on the LED array.

[0012] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 This is a schematic diagram of the opening structure of the protective cover upper plate according to an embodiment of the present invention; Figure 3 This is an exploded view of the assembly of the protective cover and the base box according to an embodiment of the present invention; Figure 4 This is an exploded view of the assembly of the carrier plate and the base box according to an embodiment of the present invention; Figure 5 This is a connection structure diagram of the lifting linkage component and the feeding reversing mechanism according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the pressing mechanism according to an embodiment of the present invention; Figure 7 This is an exploded view of the assembly of the connecting column and the clamping block according to an embodiment of the present invention.

[0015] In the diagram: 1. Testing table; 2. Base box; 21. Lifting guide groove; 3. Operation panel; 4. Protective cover; 41. Feed inlet; 42. Discharge outlet; 43. Ultraviolet light source; 5. Industrial camera; 6. Carrier plate; 7. Clamping mechanism; 71. Electric push rod; 72. Connecting column; 721. Insertion blind slot; 73. Clamping block; 74. Clamping block; 741. Moving cavity; 75. Clamping strip; 76. First nut; 77. Second nut; 78. Thread Column; 781, Hexagonal hole; 8, Feeding reversing mechanism; 81, Cylindrical seat; 82, Roller; 83, Mounting box; 9, Lifting linkage assembly; 91, Guide sleeve; 92, Push rod; 93, Guide slide bar; 94, Connecting ring; 95, Connecting lug; 96, Spring component; 10, Feeding mechanism; 101, Guide rod; 102, Stop bar; 103, Sliding support plate; 104, Ball screw; 105, Bearing plate; 11, Receiving platform; 12, Baffle. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0018] Please see Figures 1-7 As shown, the present invention is a new material conformal coating quality inspection device, including a base box 2 and an operation panel 3 installed on a test bench 1; it also includes: a protective cover 4, installed on the base box 2, with a cover plate detachably installed on its top; an industrial camera 5, installed on the cover plate, with its lens facing inwards from the base box 2; an ultraviolet light source 43, installed inside the protective cover 4; a carrying plate 6, installed inside the base box 2; a pressing mechanism 7, several of which are assembled inside the protective cover 4, for pressing and fixing the LED light array coated with the new material conformal coating placed on the carrying plate 6; and a feeding reversing mechanism 8, several of which are assembled on the carrying plate 6, for sending the inspected LED light array out of the base box 2. The protective cover 4 and the base box 2 are provided with a feed inlet 41 and a discharge outlet 42 at the connection point; Furthermore, there are two discharge ports 42, one for good products and one for defective products. Each discharge port 42 is equipped with a receiving platform 11, and a baffle 12 is installed on the receiving platform 11 away from the discharge port 42. It should be noted that the industrial camera 5 is fixedly mounted on the cover plate, while the ultraviolet light source 43 is an ultraviolet lamp (UV lamp) arranged on the inner wall of the protective cover 4 near the carrier plate 6. Preferably, four sets of feeding reversing mechanisms 8 are arranged in a square on the carrier plate 6, and preferably, four sets of pressing mechanisms 7 are fixed at the four corners of the protective cover 4. The fluorescent agent mixed in the conformal coating is a fluorescent agent compatible with the conformal coating system. For example, for acrylic and silicone conformal coatings, organic fluorescent dyes (such as fluorescein and coumarin) are selected to avoid reaction with the coating body and performance degradation. Preferably, the discharge port 42 of good products is aligned with the feed port 41, while the discharge port 42 of defective products is located on one side of the feed port 41. As a preferred embodiment of this solution, the specific working process of the testing equipment is as follows: The first step is to apply the conformal coating mixed with fluorescent agent to the corresponding positions of the LED light array using a spraying equipment. Then, the coated LED light array is fed into the feeding mechanism 10. The feeding mechanism 10 then feeds the LED light array into the carrier plate 6 installed in the base box 2 through the feed port 41. The position of the LED light array on the carrier plate 6 is then corrected by the display screen of the operation panel 3 on one side and the industrial camera 5. The second step is to control the pressing mechanism 7 fixed inside the protective cover 4 to press the four corners of the LED light array placed in the base box 2 onto the carrier plate 6. When the pressing mechanism 7 is working, the feeding reversing mechanism 8 will descend to a position below the upper surface of the carrier plate 6 so that it will not interfere with the pressing and flat laying of the LED light array onto the carrier plate 6. The third step involves the industrial camera 5, which continues to operate, working in conjunction with the ultraviolet light source 43 installed inside the protective cover 4. When the LED light array is laid out on the detection area of ​​the carrier plate 6, the ultraviolet light source 43 installed inside the protective cover 4 illuminates the area, and the industrial camera 5 captures the fluorescent image. By identifying the integrity, brightness uniformity, and boundary position of the fluorescent area, defects such as missed coating, unevenness, and contamination in the restricted coating area are automatically determined. Fourth step: After the LED light array on the carrier plate 6 is inspected, the PLC control system of the control panel will adjust the direction of the feeding reversing mechanism 8 according to the data transmitted and fed back by the industrial camera 5. For example, if the inspected LED light array is a good product, the roller 82 of the feeding reversing mechanism 8 will face the discharge port 42 of the good product. Then, the four sets of clamping mechanisms 7 will be controlled to rise synchronously to release the clamping of the LED light array. At this time, the four sets of feeding reversing mechanisms 8 will extend synchronously from the upper surface of the carrier plate 6 to push the inspected LED light array to be flush with the discharge port 42 of the good product. Then, the four sets of feeding reversing mechanisms 8 after turning will send the good LED light array out of the base box 2 and then receive it through the receiving platform 11 at the discharge port 42 of the good product. If a defective LED light bar is detected, the roller 82 of the feeding reversing mechanism 8 will first rotate toward the discharge port 42 of the defective product. Then, the four sets of clamping mechanisms 7 will rise synchronously, causing the feeding reversing mechanism 8 to push the defective LED light bar to be flush with the discharge port 42 of the defective product. Then, the four sets of feeding reversing mechanisms 8 will send the defective LED light bar out of the base box 2 and then receive it through the receiving platform 11 at the discharge port 42 of the defective product. The coating quality inspection equipment designed in this scheme has the following beneficial effects: Firstly, this solution involves installing a protective cover 4 above the base box 2, with an industrial camera 5 and an ultraviolet light source 43 installed inside the protective cover 4. Since the conformal coating on the LED light strips contains fluorescent agents, when the LED light strips are laid flat on the detection area of ​​the carrier plate 6, the ultraviolet light source 43 installed inside the protective cover 4 irradiates the area, and the industrial camera 5 captures the fluorescent image. By identifying the integrity, brightness uniformity, and boundary position of the fluorescent area, defects such as missed coating, uneven coating, and contamination in the restricted coating area are automatically determined, thereby enabling rapid detection and processing of the quality of the new conformal coating material on the LED light strips. Secondly, the base box 2 and protective cover 4 of this solution are installed on the square table-like testing platform 1. Therefore, the coating quality testing equipment of this solution can be in a semi-automatic state and cooperate with the independently set conformal coating equipment to achieve rapid and accurate quality testing of the products after conformal coating. Thirdly, by setting up a pressing mechanism 7 and a feeding reversing mechanism 8 in the base box 2, when several sets of pressing mechanisms 7 are pressed down, several sets of feeding reversing mechanisms 8 can simultaneously descend to a position below the surface of the carrier plate 6. Thus, the pressing mechanism 7 can press the LED light array flat on the carrier plate 6, enabling the industrial camera 5 and the ultraviolet light source to work together to accurately detect and process the conformal coating on the LED light array. The descending feeding reversing mechanism 8 can prevent the LED light array from protruding on the carrier plate 6, which would affect the industrial camera 5's ability to accurately capture the fluorescent image on the LED light array. When the clamping mechanism 7 disengages from clamping the LED light array, the feeding reversing mechanism 8 pushes the tested LED light array to the discharge port 42. At this time, the feeding reversing mechanism 8 sends the tested LED light array outside the protective cover 4 for collection and storage.

[0019] See Figure 3 , Figure 6 and Figure 7 As shown, the clamping mechanism 7 includes an electric push rod 71 installed at the four corners inside the protective cover 4, a connecting post 72 installed at the output end of the electric push rod 71, a blind slot 721 opened at the bottom end of the connecting post 72, a clamping block 73 installed in the blind slot 721 by screws, and a clamping block 74 installed on the clamping block 73 at a right angle. As a preferred embodiment of this solution, the electric push rod 71 is detachably installed at the four corners of the protective cover 4. The insertion blind groove 721 is opened from the bottom end of the connecting post 72 upward and without penetrating, so that the clamping block 73 can be detached from the connecting post 72 even when the connecting post 72 is not detached from the output rod of the electric push rod 71, thereby facilitating the disassembly and replacement of the clamping block 74 that has been used for a long time. When the LED light array to be tested is fed onto the carrier plate 6, the output rods of multiple electric push rods 71 ​​are extended, so that through the cooperation of the connecting column 72 and the clamping block 73, the four sets of right-angled pressing blocks 74 are pressed down and attached to the four corners of the LED light array, so that the LED light array can be laid flat and attached to the carrier plate 6, preventing the LED light array from lifting or bulging on the carrier plate 6, which would affect the industrial camera 5 from accurately and quickly capturing fluorescent images of the conformal coating on the LED light array; Since the right-angled pressing block 74 of this solution is located on the side of the pressing block 73 near the center of the carrier plate 6, when the pressing block 74 presses down and contacts the corner of the LED light array, the pressing block 73 is in a non-contact state with the LED light array. This makes it easier for the pressing block 73 to be lowered to the upper surface of the carrier plate 6 by driving the feeding reversing mechanism 8 through the lifting linkage component 9.

[0020] See Figures 3 to 5 As shown, the feeding reversing mechanism 8 includes an annular hole opened on the carrier plate 6, a cylindrical seat 81 movably installed in the annular hole, a roller 82 rotatably installed in the cylindrical seat 81, a mounting box 83 located in the base box 2, and a motor installed in the mounting box 83 and connected to the cylindrical seat 81. In a preferred embodiment of this solution, the annular hole is squarely formed on the carrier plate 6, and the cylindrical seat 81 can rotate and slide up and down within the annular hole. The rotatably mounted roller 82 can rotate on the top surface of the cylindrical seat 81 through the drive of the cylindrical motor inside the cylindrical seat 81, and the top outer ring surface of the roller 82 is slightly higher than the top surface of the cylindrical seat 81. Therefore, when the output rod of the electric push rod 71 is retracted, it causes the pressing block 74 to disengage from the corner of the LED light array. At this time, the pressing block 73 will disengage from the lifting linkage component 9, thereby causing the mounting box 83 to drive the cylindrical seat 81 to rise vertically in the annular hole. At this time, the rise of the four cylindrical seats 81 will cause the LED light array to disengage from the upper surface of the carrier plate 6, and cause the tested LED light array to rise to align with the discharge port 42. Then, the four rollers 82 that move synchronously toward the discharge port 42 will rotate, which will transport the lifted LED light array toward the discharge port 42. This will facilitate the quick delivery of the tested LED light array outside the protective cover 4, preventing the testing area inside the protective cover 4 from being in a nearly closed state, which would prevent the tested LED light array from being quickly removed from the carrier for replacement. When the output rod of the electric push rod 71 drives the pressing block 74 to descend and contact the corner of the LED light array through the pressing block 73, the pressing block 73 simultaneously contacts the lifting linkage component 9, driving the lifting linkage component 9 to descend. This, in turn, drives the cylindrical seat 81 to descend within the annular hole through the mounting box 83, causing the roller 82 to descend below the upper surface of the carrier plate 6. This effectively prevents the LED light array from developing a "bulge" in the middle due to interference from multiple rollers 82 extending from the upper surface of the carrier plate 6 when it is pressed and attached to the carrier plate 6. This would affect the accuracy of the conformal coating test on the LED light array. Furthermore, when the conformal coating on the LED light bar is detected to be defective, the motor fixed inside the mounting box 83 can be controlled to operate, causing the cylindrical seat 81 to rotate within the annular hole. Since the roller 82 is lower than the upper opening of the annular hole at this time, multiple rollers 82 can rotate towards the discharge port 42 of the defective product. Then, when the clamping block 73 disengages and presses down on the lifting linkage component 9, the mounting box 83 will drive the reversed roller 82 to rise within the annular hole through the cylindrical seat 81, thereby lifting the defective product to align with the discharge port 42 of the defective product. The synchronous rotation of multiple rollers 82 will then transport the defective LED light bar through the discharge port 42 of the defective product to the outside of the protective cover 4, thus facilitating the classification and discharge of qualified or unqualified LED light bars after inspection.

[0021] See Figures 3 to 5As shown, the pressing mechanism 7 and the feeding reversing mechanism 8 are connected by a lifting linkage assembly 9. The lifting linkage assembly 9 includes a guide sleeve 91 installed at the corner of the carrying plate 6, a lifting guide groove 21 opened at the corner of the base box 2, a push rod 92 movably inserted into the guide sleeve 91 and extending into the lifting guide groove 21, a guide slide 93 installed on the push rod 92, a connecting ring 94 installed on the outside of the mounting box 83, a connecting lug 95 formed on the outer ring surface of the connecting ring 94 and connected to the guide slide 93, and springs 96 respectively connected to the bottom of the mounting box 83 and the push rod 92. The top of the push rod 92 is vertically aligned with the connecting column 72, and the push rod 92 and the pressing block 74 are in a staggered alignment state. As a preferred embodiment of this solution, when the output rod of the electric push rod 71 extends and drives the clamping block 73 to descend vertically, the clamping block 73 will continuously contact the push rod 92 extending from the upper surface of the carrier plate 6, causing the push rod 92 to move vertically downward in the guide sleeve 91. This will cause the guide slide 93 located in the lifting guide groove 21 to also drive the mounting box 83 connected by the connecting ear block 95 and the connecting ring 94 to move vertically downward below the carrier plate 6. This will cause the cylindrical seat 81 to drive the roller 82 to descend vertically in the annular hole, so that the top outer ring surface of the roller 82 is lower than the upper opening of the annular hole, without causing the cylindrical seat 81 to detach from the annular hole. At this time, the spring 96 connected to the bottom of the mounting box 83 and the bottom of the push rod 92 will be compressed, causing multiple right-angled pressing blocks 74 to press the LED light array tightly against the carrier plate 6. At this time, multiple rollers 82 extending from the upper surface of the carrier plate 6 will descend synchronously, so as not to interfere with the LED light array being laid flat and pressed on the carrier plate 6. When the output rod of the electric push rod 71 slowly retracts, causing the pressing block 74 to disengage from the four corners of the LED light array, the pressing block 73 continues to rise slowly in contact with the push rod 92. Then, the push rod 92, driven by the spring 96 connected at the bottom, drives the guide slide 93 to rise in the lifting guide groove 21. The mounting box 83, driven by the elastic recovery of the bottom spring 96, drives the cylindrical seat 81 to rise in the annular hole. Then, the rise of multiple rollers 82 slowly pushes the LED light array to align with the discharge port 42, which facilitates the rotation of multiple rollers 82. The tested LED light array can be transported to the outside of the discharge port 42, making it easy to quickly remove the tested LED light array from the carrier plate 6. It should be noted that when the top outer ring surface of the roller 82 is higher than the top surface of the carrier plate 6, the guide slide 93 abuts against the top wall of the lifting guide groove 21 to prevent the LED light array from being lifted to a position higher than the discharge port 42 due to the excessive rise of the cylindrical seat 81 in the annular hole, which would affect the LED light array that has completed the test and cannot be discharged from the discharge port 42 quickly. Since the push rod 92 and the connecting column 72 are vertically aligned, the maximum size of the LED light array pressed onto the carrier plate 6 will not come into contact with the push rod 92, and thus will not affect the vertical lifting and lowering movement of the push rod 92 within the guide sleeve 91. This solution utilizes the cooperation of the push rod 92, guide slide 93, and connecting ring 94 located at the corner of the carrier plate 6 to enable the vertically lifting connecting column 72 to drive the push rod 92 to move up and down on the carrier plate 6. This, in turn, causes the mounting box 83 to drive the cylindrical seat 81 to move up and down synchronously within the annular hole. This allows the lifting of the pressing block 74 and the roller 82 to be synchronized and linked. Furthermore, the lifting linkage component 9 is hidden at the corner of the carrier plate 6, ensuring that it does not interfere with the normal pressing of the pressing mechanism 7 and the feeding reversing mechanism 8 of the LED light array to be tested, or the feeding and discharging of the tested LED light array by the feeding reversing mechanism 8.

[0022] See Figure 6 and Figure 7 As shown, a movable cavity 741 is provided inside the pressing block 74. The bottom of the movable cavity 741 and the cavity wall near the center of the base box 2 are both opened through. A pressing strip 75 is movably installed inside the movable cavity 741 through a pushing component. The pushing assembly includes a first nut 76 mounted on the back of the pressure strip 75, a second nut 77 penetrating the back of the moving cavity 741, and threaded posts 78 of different lengths that are threadedly connected to the first nut 76 and the second nut 77. A spring 96 is connected between the pressing strip 75 and the cavity wall of the moving cavity 741; a hexagonal hole 781 is provided at the outer end of the threaded column 78; and adjustment holes are provided on the side walls of the protective cover 4, which is not the feed port 41 and the discharge port 42. As a preferred embodiment of this solution, in order to facilitate the inspection of the conformal coating quality of LED light bars of different sizes, the size of the LED light bar to be inspected is larger than the size of the four sets of feeding reversing mechanisms 8 that form a square, but smaller than the size of the square formed by the four sets of right-angled pressing blocks 74. The specific implementation process of this invention is as follows: First, the output rods of the four electric push rods 71 ​​are extended to drive the pressing block 74 to descend to be flush with the feed port 41 and the discharge port 42. At this time, the threaded post 78 installed on the side wall of the pressing block 74 near the discharge port 42 and the feed port 41 is aligned with the discharge port 42, the feed port 41 and the opening adjustment hole. Then, the operator inserts an Allen wrench into the feed port 41, the discharge port 42 and the adjustment hole, so that the Allen wrench is engaged with the hexagonal hole 781 on the threaded post 78. Then, the operator twists the Allen wrench to disassemble the threaded post 78 that is already located in the first nut 76 and the second nut 77. At this time, the spring 96 located in the moving cavity 741 will provide gravity support for the pressing strip 75, and the pressing strip 75 will also move towards the cavity wall of the moving cavity 741, so that the first nut 76 and the second nut 77 come into contact with each other. Second, if it is necessary to press the largest LED light array onto the carrier plate 6 for conformal coating quality inspection, then only a threaded post 78 with the same thickness as the sum of the first nut 76 and the second nut 77 needs to be selected. Then, the selected threaded post 78 is screwed into the first nut 76 using an Allen wrench. Then, continue to screw it so that the threaded post 78 is simultaneously threaded into the second nut 77. This makes it easier to fix the pressure strip 75 into the moving cavity 741, and to make the four sets of pressure strips 75 in a right-angled state in the maximum size state to press the largest LED light array for inspection. Third, when pressing the smallest LED light array onto the carrier plate 6 for conformal coating quality inspection, a longer threaded post 78 is required. It is turned into the first nut 76 using an Allen wrench. As the longer threaded post 78 rotates, it will enter the second nut 77 and press against the pressure strip 75. As the threaded post 78 continues to rotate, since the pressure strip 75 is movably placed in the moving cavity 741, the pushing force of the threaded post 78 will cause the pressure strip 75 to move away from the moving cavity 741. As several longer threaded posts 78 are connected to the moving cavity 741 of the pressure block 74, the size of the square formed by the four sets of right-angled pressure strips 75 can be reduced, which makes it easier to perform pressing and fitting inspection on the smaller LED light array. When clamping non-square LED light bars, such as rectangular LED light bars, longer threaded posts 78 can be connected to the front and rear symmetrical clamping strips 75, so that the front and rear symmetrical clamping strips 75 are moved closer to each other. Shorter threaded posts 78 can be connected to the left and right symmetrical clamping strips 75, so that the left and right symmetrical clamping strips 75 are moved further apart. This makes it easier to adjust the four sets of right-angle clamping strips 75 to clamp and fix the rectangular LED light bar. Although the two clamping strips 75 located on the same clamping block 74 are not at the corner of the LED light bar after adjustment, they are still aligned and clamped and fixed at the edge of the LED light bar. Thirdly, when the tested LED light array is pushed to correspond to the feed port 41, the retraction distance of the output rod of the electric push rod 71 can be controlled as needed. This allows the roller 82 to rise to its highest height and the bottom surface of the pressing strip 75 to contact the LED light array, while keeping the LED light array under no external pressure. The rotation of the roller 82 can then transport the tested LED light array out of the discharge port 42, and the contacting pressing strip 75 can horizontally limit the movement of the LED light array. This design cleverly incorporates a pushing component within the moving cavity 741, and the threaded post 78 connecting the first nut 76 and the second nut 77 is of different lengths. Therefore, it not only facilitates the adjustment of the position of the pressing strip 75 on the pressing block 74, but also allows the pressing strip 75 to be adjusted within the moving cavity 741 with small precision. The design of the electric push rod 71 or other structures within the moving cavity 741 will not prevent the pressing strip 75 from being unable to be adjusted to different sizes and precisions within the moving cavity 741. Furthermore, the threaded post 78 connecting the first nut 76 and the second nut 77 will only be located between the pressing strip 75 and the pressing block 74, without any over-extension. Consequently, it will not affect the normal lifting and lowering movement of the pressing block 74 under the push of the output rod of the electric push rod 71.

[0023] See Figure 2 As shown, a feeding mechanism 10 is provided on the side of the base box 2 near the feed inlet 41. The feeding mechanism 10 includes at least two guide rods 101 horizontally mounted on the side wall of the base box 2, a stop bar 102 mounted on the tail end of the two guide rods 101, a sliding support plate 103 movably mounted on the two guide rods 101, a ball screw 104 rotatably mounted between the two guide rods 101, a screw nut connecting the sliding support plate 103 and the ball screw 104, a moving plate mounted on the inner side of the sliding support plate 103, and a bearing plate 105 mounted at the feed inlet 41. The tail of the baffle 102 is equipped with a servo motor for driving the ball screw 104 to rotate, and the bottom of the moving plate, the bearing plate 105 and the feed port 41 are all in the same plane. As a preferred embodiment of this solution, when the LED light array to be tested needs to be fed onto the carrier plate 6, the distance between the sliding support plate 103 and the carrier plate 105 is first adjusted as needed so that the LED light array to be tested is accurately placed between the horizontal plate of the sliding support plate 103 and the carrier plate 105. Then, the servo motor fixed on the baffle 102 is controlled to work, so that the sliding support plate 103 is driven to move towards the carrier plate 105 through the cooperation of the ball screw 104 and the screw nut. When part of the LED light array enters the protective cover 4, the roller 82 facing the feed inlet 41 will be in working state, and the edge pressing strip 75 will contact the surface of the LED light array, so that the LED light array to be tested can be stably and accurately transported onto the carrier plate 6 for three-proof paint coating quality inspection. It should be noted that when the LED light array to be tested enters the protective cover 4 through the feed port 41, the output rods of the electric push rods 71 ​​at the two corners of the discharge port 42, which are aligned with the feed port 41, can be controlled to extend, causing the two pressing blocks 74 that are close to the aligned ones to descend a short distance, partially blocking the discharge port 42. However, the descending connecting column 72 will not contact the push rod 92, thus preventing the roller 82 from rotating excessively and causing the LED light array to be tested to be sent out through the discharge port 42.

[0024] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0025] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A new type of conformal coating quality testing equipment, comprising a base box and an operation panel mounted on a testing platform; characterized in that, Also includes: A protective cover is installed on the base box, and a cover plate can be detachably installed on its top; An industrial camera is mounted on a cover plate with its lens facing inwards from the base box. The ultraviolet light source is installed inside a protective cover; The loading platform is installed inside the base box; The clamping mechanism, consisting of several units housed within a protective cover, is used to clamp and secure the LED light array coated with a new material conformal coating placed on the carrier plate. The feeding reversing mechanism, consisting of several units mounted on the carrier plate, is used to deliver the tested LED light arrays out of the base box. The protective cover and the base box are provided with a feed inlet and a discharge outlet.

2. The new material conformal coating quality testing equipment according to claim 1, characterized in that, The clamping mechanism includes an electric push rod installed at the four corners inside the protective cover, a connecting post installed at the output end of the electric push rod, a blind slot for insertion opened at the bottom end of the connecting post, a clamping block installed into the blind slot by screws, and a clamping block installed on the clamping block at a right angle.

3. The new material conformal coating quality testing equipment according to claim 2, characterized in that, The feeding reversing mechanism includes an annular hole on the carrier plate, a cylindrical seat movably installed in the annular hole, a roller rotatably installed in the cylindrical seat, a mounting box located in the base box, and a motor installed in the mounting box and connected to the cylindrical seat.

4. The new material conformal coating quality testing equipment according to claim 3, characterized in that, The pressing mechanism and the feeding reversing mechanism are connected by a lifting linkage assembly. The lifting linkage assembly includes a guide sleeve installed at the corner of the carrying plate, a lifting guide groove opened at the corner of the base box, a push rod movably inserted into the guide sleeve and extending into the lifting guide groove, a guide slide on the push rod, a connecting ring installed outside the mounting box, a connecting lug formed on the outer ring surface of the connecting ring and connected to the guide slide, and springs respectively connected to the bottom of the mounting box and the push rod. The top of the push rod is vertically aligned with the connecting column, and the push rod and the pressure block are staggered and aligned.

5. The new material conformal coating quality testing equipment according to claim 2, characterized in that, The pressing block has a movable cavity, and the bottom of the movable cavity and the cavity wall near the center of the base box are both opened through it. The pressing strip is movably installed in the movable cavity through a pushing component.

6. The new material conformal coating quality testing equipment according to claim 5, characterized in that, The pushing assembly includes a first nut mounted on the back of the pressure strip, a second nut extending through the back of the moving cavity, and threaded posts of different lengths that are threadedly connected to the first nut and the second nut. A spring is connected between the pressing strip and the cavity wall of the moving cavity, and a hexagonal hole is provided at the outer end of the threaded column; adjustment holes are provided on the side walls of the protective cover that are not inlet and outlet.

7. The new material conformal coating quality testing equipment according to claim 1, characterized in that, The base box is provided with a feeding mechanism on the side near the feed inlet. The feeding mechanism includes at least two guide rods horizontally mounted on the side wall of the base box, a stop bar mounted on the tail end of the two guide rods, a sliding support plate movably mounted on the two guide rods, a ball screw rotatably mounted between the two guide rods, a screw nut connecting the sliding support plate and the ball screw, a moving plate mounted on the inner side of the sliding support plate, and a bearing plate mounted at the feed inlet. The tail of the baffle is equipped with a servo motor for driving the ball screw to rotate, and the moving plate, the bearing plate and the bottom of the feed inlet are all in the same plane.

8. The new material conformal coating quality testing equipment according to claim 1, characterized in that, There are two discharge ports, and each discharge port is equipped with a receiving platform. The receiving platform is equipped with a baffle away from the discharge port.

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