A copper-clad plate surface flatness detection device

Abstract

The application relates to a copper-clad plate surface flatness detection device and relates to the technical field of copper-clad plate flatness detection. The device comprises a rack, a workbench arranged on the rack, and a supporting plate rotatably arranged on the workbench. The supporting plate is provided with a containing hole for movably mounting a copper-clad plate. The rack is provided with a plugging assembly for movably plugging the opening end of the containing hole, a turnover assembly for driving the supporting plate to rotate, and a detection assembly for detecting the surface flatness of the copper-clad plate. The application can reduce the risk of damaging the surface of the copper-clad plate, improve the detection efficiency and detection accuracy of the surface flatness of the copper-clad plate.

Description

Technical Field

[0001] This application relates to the technical field of copper clad laminate flatness testing, and in particular to a copper clad laminate surface flatness testing device. Background Technology

[0002] Copper clad laminate is a plate-shaped material made by impregnating electronic fiberglass cloth or other reinforcing materials with resin, covering both sides with copper foil, and hot pressing. Different printed circuit boards are made by selectively processing, etching, drilling, and copper plating the copper clad laminate. In high-frequency, high-speed, and high-density circuits, the performance requirements for the surface flatness of the copper clad laminate are high.

[0003] Currently, contact measurement methods are commonly used to inspect the surface flatness of copper-clad laminates (CCLs), such as dial indicators, micrometers, or profilometers. During inspection, technicians first fix the CCL horizontally on the inspection equipment to support and fix it, preventing it from bending or deforming. Then, the technicians bring the probe of the dial indicator, micrometer, or profilometer into contact with the surface of the CCL and move the probe horizontally along the surface to measure and analyze the height difference at different locations, thereby calculating the surface flatness index. Finally, the technicians flip the CCL over and inspect the flatness of the other surface.

[0004] Regarding the aforementioned technologies, during testing, the probe needs to measure multiple locations on the surface of the copper-clad laminate, resulting in low testing efficiency. Furthermore, the probe is prone to damaging the surface of the copper-clad laminate as it moves along the laminate, and it is also prone to wear or damage to the probe, reducing the accuracy of the testing. When testing the flatness of the other surface of the copper-clad laminate, the laminate needs to be flipped and re-fixed on the testing equipment. Repeated fixing can easily damage the copper-clad laminate, reduce the surface quality of the laminate, and affect the testing efficiency. Summary of the Invention

[0005] In order to reduce the risk of damage to the surface of copper clad laminates and improve the detection efficiency and accuracy of copper clad laminate surface flatness, this application provides a copper clad laminate surface flatness detection device.

[0006] The copper-clad laminate surface flatness testing device provided in this application adopts the following technical solution:

[0007] A copper-clad laminate surface flatness testing device includes a frame, a worktable mounted on the frame, and a support plate rotatably mounted on the worktable. The support plate has a receiving hole for the copper-clad laminate to be movably installed. The frame is provided with a sealing component for movably sealing the opening end of the receiving hole, a flipping component for driving the support plate to rotate, and a testing component for testing the surface flatness of the copper-clad laminate.

[0008] The detection assembly includes a light shield that is lifted and mounted on a frame. The light shield is movably fitted to the side wall of the support plate away from the worktable. The bottom of the light shield is open. A transparent plate is inclinedly arranged inside the light shield. The downward inclined side of the transparent plate is movably fitted to the copper-clad laminate. A monochromatic light source and a video detection module are provided inside the light shield. A lifting component for driving the light shield to rise and fall is provided on the frame.

[0009] The sealing assembly includes two sets of movable plates slidably disposed on the support plate. The two sets of movable plates selectively seal one of the two opening ends of the receiving hole. Each set of movable plates includes two movable plates that slide closer to or further away from each other. The copper-clad laminate is movably attached to the side wall of the movable plate that is close to each other. The frame is provided with an adjusting component that drives the movable plates to slide synchronously.

[0010] When the support plate is rotated to a horizontal position, the two movable plates at the top of the support plate move away from each other and make the upward-facing opening of the receiving hole connected, while the two movable plates at the bottom of the support plate move closer to each other and block the downward-facing opening of the receiving hole.

[0011] By adopting the above technical solution, when testing is required, the technician places the copper-clad laminate into the receiving hole. At this time, the support plate is in a horizontal state, and the two movable plates at the top of the support plate are far apart from each other, so that the upward-facing opening end of the receiving hole is in a connected state, which makes it easy for the technician to put the copper-clad laminate into the receiving groove. At the same time, the two movable plates at the bottom of the support plate are close to each other, blocking the downward-facing opening end of the receiving hole and fitting against the copper-clad laminate, so that the copper-clad laminate is not easy to bend or deform. Meanwhile, the side wall of the copper-clad laminate fits against the inner side wall of the receiving hole, thereby supporting and fixing the copper-clad laminate. This is the initial state of the movable plate.

[0012] Then the lifting component lowers the light shield, making it fit against the support plate. At this time, the side of the transparent plate near the opening of the light shield fits against the copper-clad laminate, forming a wedge-shaped air film between the transparent plate and the surface of the copper-clad laminate.

[0013] Then, a monochromatic light source emits parallel monochromatic light towards the copper-clad laminate, causing the incident light to be reflected on the upper and lower surfaces of the air film. The two reflected beams interfere with each other, forming interference fringes. At the same time, the video detection module acquires and records the interference fringe images and analyzes the shape, spacing, and degree of deformation of the interference fringes. When the surface of the copper-clad laminate is uneven, the interference fringes appear to be curved, twisted, or unevenly spaced. When the surface of the copper-clad laminate is flat, the interference fringes appear as uniform parallel lines. This enables the detection of the flatness of the copper-clad laminate surface, with high detection efficiency. At the same time, the detection is non-contact, reducing the risk of damage to the surface of the copper-clad laminate and improving the accuracy of the detection.

[0014] The light shield can effectively block stray light from the outside, reducing the impact of ambient light on the accuracy of the detection.

[0015] After the inspection is completed, the lifting component drives the light shield to rise, and then the flipping component drives the support plate to rotate. At this time, the light shield does not easily obstruct the rotation of the support plate. At the same time, the adjusting component drives the movable plate to slide until the support plate rotates to a horizontal state again. At this time, the surface of the copper-clad board that has been inspected rotates to face the worktable, while the movable plate is in the initial state and the surface of the copper-clad board that has not been inspected faces upward, thus realizing the flipping and support fixation of the copper-clad board.

[0016] Then the lifting component drives the light shield to descend and rise again, enabling the inspection of the second surface of the copper-clad laminate. This allows for rapid inspection of the flatness of the two surfaces of the copper-clad laminate. At this time, the support plate is horizontal and the movable plate is in its initial state, facilitating the next inspection and improving inspection efficiency.

[0017] Optionally, the adjusting component includes a limiting rod disposed on the movable plate. A sliding limiting groove for the limiting rod is provided on the rotating shaft of the support plate. The limiting rod is movably abutted against the inner side wall of the limiting groove. Two support cylinders are provided on the worktable. The two support cylinders are coaxially rotatably connected to both ends of the rotating shaft of the support plate. The two movable plates of each group correspond one-to-one with the two support cylinders. A guide groove is provided on the inner peripheral wall of the support cylinder. A guide post is provided at the end of the limiting rod away from the movable plate. The guide post is slidably adapted to the guide groove. The guide groove includes two oppositely arranged guide grooves. The guide grooves are spirally arranged around the inner peripheral wall of the support cylinder. The two guide grooves are interconnected and the connection is smoothly transitioned.

[0018] By adopting the above technical solution, when the flipping component drives the support plate to rotate, the limiting rod abuts against the inner wall of the limiting groove, causing the limiting rod and the guide column to rotate synchronously, thereby allowing the guide column to slide in the guide groove. Since the guide groove includes two oppositely arranged guide grooves, which are spirally arranged along the circumferential wall of the rotating hole, the limiting rod slides in the limiting groove, thereby causing the two movable plates of one group to slide closer to each other, and the two movable plates of the other group to slide further away from each other. When the support plate rotates, the movable plates on both sides of the support plate simultaneously come into contact with the copper-clad laminate, making it difficult for the copper-clad laminate to slip out of the receiving hole until the support plate rotates to a horizontal position. At this time, the surface of the copper-clad laminate that has been inspected rotates to face the worktable, and the movable plates move to the initial state, realizing the synchronous and coordinated operation of the flipping of the copper-clad laminate and the support and fixation of the copper-clad laminate, improving the operating efficiency of the equipment, and saving power.

[0019] Optionally, each of the support cylinders is provided with two pressure sensors, which correspond one-to-one with two movable plates on one of the support cylinders. The two pressure sensors are movably engaged with the limiting rod. A controller is provided on the worktable, and the pressure sensors and the flipping assembly are electrically connected to the controller.

[0020] By adopting the above technical solution, after the technician places the copper-clad laminate into the receiving hole, the technician starts the equipment. At this time, the controller drives the flipping component to work, thereby realizing the sliding of the movable plate. When the copper-clad laminate warps, it easily presses against the movable plate, causing the movable plate to move relative to the plate. This causes the limit rod to come into contact with and press against the pressure sensor until the pressure sensor reaches the set threshold, indicating that the copper-clad laminate warps significantly. At this point, the controller drives the flipping component to stop working. Then, the technician removes the copper-clad laminate and marks it as defective, achieving a rough inspection of the copper-clad laminate. Then, the technician inspects the next copper-clad laminate, thereby improving inspection efficiency.

[0021] Optionally, the frame is provided with a cleaning component for cleaning the surface of the copper-clad laminate. The frame is also provided with a switching component that allows the cleaning component and the detection component to move in correspondence with the support plate. The switching component includes a switching plate slidably disposed on the frame, a lead screw nut disposed on the switching plate, the lead screw nut being located on the side wall of the switching plate away from the worktable, a switching lead screw rotatably disposed on the frame, the switching lead screw being threadedly adapted to the lead screw nut, a light shield being raised and lowered disposed on the switching plate, the cleaning component being disposed on the switching plate, and a second power component being provided on the frame to drive the switching lead screw to rotate.

[0022] By adopting the above technical solution, after the copper-clad laminate is placed in the receiving hole, the second power component drives the switching screw to rotate, thereby causing the screw nut to slide with the switching plate, so that the cleaning component corresponds with the support plate. Then the cleaning component cleans the surface of the copper-clad laminate, reducing the influence of dust and other impurities on the surface of the copper-clad laminate on the test results and improving the accuracy of the surface flatness test of the copper-clad laminate.

[0023] After cleaning is completed, the second power component drives the switching plate to continue sliding until the light shield aligns with the support plate. At this point, the second power component stops working, and then the lifting component drives the light shield to descend and inspects the copper-clad laminate.

[0024] After the inspection is completed, the lifting component drives the light shield to rise, while the second power component drives the switching plate to slide in the opposite direction until the cleaning component moves to the position before cleaning, so that the cleaning component and the light shield can easily obstruct the rotation of the support plate, which facilitates the subsequent inspection of the second surface of the copper-clad laminate.

[0025] Optionally, the lifting component includes a connecting rod disposed on the top of the light shield, the connecting rod being slidably disposed through the switching plate, and a clamping block being provided on the frame, the side wall of the clamping block near the connecting rod being inclined, and the end of the connecting rod away from the light shield being movably clamped against the inclined side of the clamping block.

[0026] By adopting the above technical solution, after cleaning, the second power component drives the switching plate to slide, thereby driving the light shield and the connecting rod to move synchronously. At this time, the inclined side of the pressing block presses against and drives the connecting rod to slide towards the support plate, realizing the descent of the light shield until the light shield moves to correspond with the support plate. At this time, the light shield descends to fit against the support plate. When the switching plate slides in the opposite direction, the connecting rod slides away from the support plate under the elastic force, realizing the rise of the light shield.

[0027] This system enables the switching plate to slide and the light shield to rise / fall synchronously, improving equipment operating efficiency and saving power. At the same time, when the switching plate slides, the light shield does not contact the support plate, making it less likely for gaps to form between the light shield and the support plate due to friction, thereby improving the light shielding performance of the light shield.

[0028] Optionally, the cleaning assembly includes a cleaning roller mounted on the switching plate. The cleaning roller is movably fitted to the side wall of the copper-clad laminate away from the worktable. A rotating cylinder is coaxially rotatably mounted inside the cleaning roller. The rotating cylinder has multiple first connecting holes, and the cleaning roller has multiple second connecting holes. The multiple first connecting holes and the multiple second connecting holes are movably corresponding. The switching plate is provided with a storage tank for storing cleaning fluid. The storage tank is provided with a dispensing pump. A connecting hose connects the dispensing pump and the rotating cylinder. The frame is provided with a driving component that aligns the first connecting holes with the second connecting holes. The frame is also provided with a collection assembly for collecting the cleaning fluid after cleaning.

[0029] By adopting the above technical solution, after the copper-clad laminate is placed in the receiving hole, the second power component drives the switching plate to slide, so that the cleaning roller corresponds to the support plate. Then the cleaning roller continues to move, so that the cleaning roller is in contact with the copper-clad laminate, and the surface of the copper-clad laminate is wiped and cleaned as the cleaning roller moves.

[0030] When the cleaning roller is in contact with the copper-clad laminate, the drive unit connects the first connecting hole and the second connecting hole. At the same time, the liquid pump pumps the cleaning liquid in the storage tank into the rotating cylinder through the connecting hose, so that the cleaning liquid flows out through the first connecting hole and the second connecting hole, thereby improving the cleaning effect.

[0031] When the cleaning roller separates from the copper-clad laminate, the drive unit causes the first connecting hole and the second connecting hole to be misaligned, making it difficult for the cleaning fluid in the rotating drum to flow out and avoid waste of the cleaning fluid. At the same time, the collection component collects the cleaning fluid after cleaning, improving the cleanliness of the workbench.

[0032] Optionally, the cleaning roller is rotatably mounted on the switching plate, and the driving component includes a first gear coaxially mounted on the rotating shaft of the rotating drum and a second gear coaxially mounted on the rotating shaft of the cleaning roller. The first gear and the second gear are arranged opposite to each other. Each of the two movable plates in each group is respectively provided with a first rack and a second rack, and the first rack and the second rack are arranged alternately. The first gear selectively engages with one of the two first racks, and the second gear selectively engages with one of the two second racks.

[0033] When the support plate is in a horizontal state, the first gear is movably engaged with the first rack located on the top of the support plate, and the second gear is movably engaged with the second rack located on the top of the support plate. Before cleaning, the distance between the first gear and the corresponding first rack is less than the distance between the second gear and the corresponding second rack.

[0034] By adopting the above technical solution, when the cleaning roller corresponds to the support plate, the first gear meshes with the first rack located at the top of the support plate. Then the cleaning roller continues to move, at which time the first rack drives the first gear to rotate, thereby driving the rotating cylinder to rotate, until the cleaning roller is in contact with the copper-clad laminate. At this time, the first connecting hole corresponds to the second connecting hole, and at the same time, the second gear meshes with the second rack located at the top of the support plate. The cleaning roller continues to move, causing the second rack to drive the second gear to rotate, thereby driving the cleaning roller to rotate. At this time, the cleaning roller and the rotating cylinder rotate synchronously, keeping the first connecting hole and the second connecting hole in a corresponding state, realizing the continuous pumping out of the cleaning liquid and realizing the rotational wiping cleaning of the copper-clad laminate, further improving the cleaning effect.

[0035] When the cleaning roller moves to the point of separating from the copper-clad laminate, the first gear separates from the corresponding first rack. Then the cleaning roller continues to move. At this time, the first gear and the rotating cylinder do not rotate. Meanwhile, the second rack continues to drive the second gear to rotate, causing the first connecting hole and the second connecting hole to be misaligned until the cleaning roller is misaligned from the support plate. At this time, the second gear separates from the corresponding second rack, and the first connecting hole and the second connecting hole remain misaligned, thereby achieving precise control of the pumping out of the cleaning fluid.

[0036] Optionally, the cleaning assembly further includes a blower plate located at the bottom of the switching plate. The blower plate is hollow and has multiple air outlets on its side wall near the support plate. An air pump is provided on the switching plate and is connected to the blower plate.

[0037] By adopting the above technical solution, after wiping and cleaning, the switching plate continues to slide, so that the blower plate corresponds to the support plate. At the same time, the air pump works, allowing external air to enter the blower plate and blow it onto the support plate through the air outlet, blowing away the residual cleaning liquid on the surface of the copper-clad board, keeping the surface of the copper-clad board dry, reducing the impact of residual cleaning liquid on the reflection of monochromatic light source, and improving the accuracy of detection.

[0038] Optionally, the collection assembly includes a collection box movably disposed within the workbench, with the top wall of the collection box being open. A collection trough is provided on the top of the workbench, and a drain hole is provided on the inner bottom wall of the collection trough. The drain hole communicates with the interior of the workbench, and the collection box is located directly below the drain hole.

[0039] By adopting the above technical solution, during cleaning, the cleaning fluid falls into the collection tank on the top of the workbench and enters the collection box through the drain hole, thereby realizing the collection and cleaning of the cleaning fluid and improving the cleanliness of the workbench.

[0040] Optionally, the flipping assembly includes a driven worm gear coaxially mounted on the rotating shaft of the support plate, a driving worm gear rotatably mounted on the worktable, the driving worm gear meshing with the driven worm gear, and a first power component for driving the driving worm gear to rotate on the worktable.

[0041] By adopting the above technical solution, after the first surface of the copper-clad laminate is inspected, the first power component drives the active worm gear to rotate, thereby driving the driven worm wheel to rotate, realizing the rotation of the support plate until the inspected surface of the copper-clad laminate faces the worktable. At this time, the first power component stops working, and the copper-clad laminate is kept horizontal by the self-locking of the worm wheel and worm gear, which facilitates subsequent cleaning and inspection.

[0042] In summary, this application includes at least one of the following beneficial technical effects:

[0043] 1. During testing, the light shield is attached to the support plate. At this time, the side of the transparent plate near the opening of the light shield is attached to the copper-clad laminate, forming a wedge-shaped air film between the transparent plate and the surface of the copper-clad laminate. A monochromatic light source emits parallel monochromatic light towards the copper-clad laminate, causing the incident light to be reflected on the upper and lower surfaces of the air film. The two reflected beams interfere to form interference fringes. Then, the video detection module acquires and records the interference fringe image, and analyzes the shape, spacing, and degree of deformation of the interference fringes. When the surface of the copper-clad laminate is uneven, the interference fringes appear to be curved, twisted, or unevenly spaced. When the surface of the copper-clad laminate is flat, the interference fringes appear as uniform parallel lines. This enables the detection of the flatness of the copper-clad laminate surface, with high detection efficiency. At the same time, the detection is non-contact, reducing the risk of damage to the surface of the copper-clad laminate and improving the detection accuracy.

[0044] 2. The rotating component drives the support plate to rotate, causing the support plate to drive the limiting rod and guide column to rotate synchronously. This allows the guide column to slide in the guide groove and the limiting rod to slide in the limiting groove. As a result, the two movable plates in one group slide closer to each other, while the two movable plates in the other group slide further apart. When the support plate rotates, the movable plates on both sides of the support plate simultaneously come into contact with the copper-clad laminate, making it difficult for the copper-clad laminate to slip out of the receiving hole. This continues until the support plate rotates to a horizontal position, achieving the flipping of the copper-clad laminate. At this point, the upward-facing opening of the receiving hole is in a connected state, while the downward-facing opening is in a blocked state. The two movable plates at the bottom of the support plate come into contact with the copper-clad laminate and support it, preventing the copper-clad laminate from bending or deforming. This achieves synchronous and coordinated flipping of the copper-clad laminate and support and fixation of the copper-clad laminate, improving equipment operating efficiency and saving power.

[0045] 3. After the copper-clad laminate is placed in the receiving hole, the second power component drives the switching screw to rotate, and drives the screw nut to slide with the switching plate, thereby driving the cleaning roller to move synchronously, so that the cleaning roller corresponds with the support plate. Then the cleaning roller continues to move, so that the cleaning roller is in contact with the copper-clad laminate, and wipes and cleans the surface of the copper-clad laminate as the cleaning roller moves, reducing the influence of dust and other impurities on the surface of the copper-clad laminate on the test results and improving the accuracy of the surface flatness test of the copper-clad laminate.

[0046] At the same time, the driving component connects the first connecting hole and the second connecting hole, and the liquid pump pumps the cleaning liquid in the storage tank into the rotating cylinder through the connecting hose, so that the cleaning liquid flows out through the first connecting hole and the second connecting hole, thereby improving the cleaning effect.

[0047] Then the cleaning roller continues to move until it separates from the copper-clad board. At this time, the drive unit makes the first connecting hole and the second connecting hole staggered, so as to achieve precise control of the pumping out of the cleaning fluid and avoid waste of the cleaning fluid. At the same time, the collection component collects the cleaning fluid after cleaning, improving the cleanliness of the workbench. Attached Figure Description

[0048] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0049] Figure 2 Schematic diagram of the connection structure of the movable plate, support plate and support cylinder;

[0050] Figure 3 This is a schematic diagram of the connection structure between the guide column and the support cylinder;

[0051] Figure 4 This is a schematic diagram of the connection structure of the light shield, switching plate, and frame;

[0052] Figure 5 This is a schematic diagram of the connection structure of the cleaning roller, the blowing disc, and the switching plate;

[0053] Figure 6 This is a schematic diagram of the connection structure of the cleaning roller, the rotating drum, and the cleaning cylinder;

[0054] Figure 7 This is a schematic diagram of the connection structure of the collection box and the cover.

[0055] Reference numerals: 1. Frame; 11. Workbench; 12. Controller; 2. Support plate; 21. Receiving hole; 3. Copper-clad laminate; 4. Sealing assembly; 41. Movable plate; 42. Adjusting component; 421. Limiting rod; 422. Limiting groove; 423. Support cylinder; 424. Guide groove; 425. Guide column; 426. Pressure sensor; 5. Detection assembly; 51. Light shield; 52. Transparent plate; 53. Monochromatic light source; 54. Video detection module; 55. Lifting component; 551. Connecting rod; 552. Clamping block; 553. Roller; 6. Switching assembly; 61. Switching plate; 62. Lead screw nut; 63. Switching lead screw; 64. Second power component; 7. Cleaning assembly; 71. Cleaning roller; 711. Second connecting hole; 72. Rotating cylinder; 721. First connecting hole; 73. Cleaning cylinder; 74. Liquid storage tank; 75. Liquid discharge pump; 76. Blower plate; 77. Air pump; 78. Drive component; 781. First gear; 782. Second gear; 783. First rack; 784. Second rack; 8. Collection assembly; 81. Collection box; 82. Collection trough; 83. Drain hole; 84. Cleaning port; 85. Cover plate; 9. Tilting assembly; 91. Driven worm gear; 92. Driving worm; 93. First power component. Detailed Implementation

[0056] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0057] This application discloses a device for detecting the surface flatness of copper-clad laminates. (Refer to...) Figure 1 and Figure 2 A copper-clad laminate surface flatness testing device includes a frame 1 placed on the ground and a worktable 11 fixed on the frame 1. A support plate 2 is rotatably connected to the worktable 11. The rotation axis of the support plate 2 is consistent with the length direction of the frame 1. A receiving hole 21 is opened on the support plate 2. The copper-clad laminate 3 is placed in the receiving hole 21 and is movably fitted with the inner side wall of the receiving hole 21. When the copper-clad laminate 3 is located in the receiving hole 21, the two surfaces of the copper-clad laminate 3 are respectively consistent with the opposite side walls of the support plate 2. A sealing component 4 is provided on the worktable 11 to movably seal the opening end of the receiving hole 21.

[0058] To drive the support plate 2 to rotate and achieve the flipping of the copper-clad laminate 3, a flipping assembly 9 is provided on the frame 1, as shown in the figure. Figure 1The flipping assembly 9 includes a driven worm gear 91 coaxially fixed on the rotating shaft of the support plate 2, and a driving worm gear 92 rotatably connected to the worktable 11. The rotation direction of the driving worm gear 92 is arranged horizontally and parallel to the rotation axis of the support plate 2. The driving worm gear 92 meshes with the driven worm gear 91. A first power component 93 for driving the driving worm gear 92 to rotate is provided on the worktable 11. In this application, the first power component 93 is set as a driving motor.

[0059] Reference Figure 2 The sealing assembly 4 includes two sets of movable plates 41 slidably connected to the support plate 2. The two sets of movable plates 41 respectively selectively seal one of the two opening ends of the receiving hole 21. Each set of movable plates 41 includes two movable plates 41 that slide closer to each other / away from each other. The sliding direction of the movable plates 41 is parallel to the rotation axis of the support plate 2. The copper-clad laminate 3 is in contact with the side walls of the movable plates 41 that are close to each other. The frame 1 is provided with an adjusting component 42 that drives the movable plates 41 to slide synchronously.

[0060] Reference Figure 2 and Figure 3 The adjusting component 42 includes a limiting rod 421 fixed to the movable plate 41. A limiting groove 422 for sliding the limiting rod 421 is provided on the rotating shaft of the support plate 2. The limiting rod 421 is movably pressed against the inner wall of the limiting groove 422. Two support cylinders 423 are fixed to the top of the worktable 11. The two support cylinders 423 are coaxially rotatably connected to both ends of the rotating shaft of the support plate 2. Each set of two movable plates 41 corresponds one-to-one with the two support cylinders 423. A guide groove is provided on the inner circumferential wall of the support cylinder 423. A guide post 425 is fixed to the end of the limiting rod 421 away from the movable plate 41. The guide post 425 is slidably adapted to the guide groove. The guide groove includes two opposing guide slots 424. The guide groove 424 is spirally arranged around the inner circumferential wall of the support cylinder 423. The two guide grooves 424 are interconnected and the connection is smoothly transitioned. One end of the guide groove 424 near the support plate 2 is located below the axis of the support cylinder 423, and the other end of the guide groove 424 is located above the axis of the support cylinder 423. Each support cylinder 423 is equipped with two pressure sensors 426. The two pressure sensors 426 correspond one-to-one with the two movable plates 41 on one support cylinder 423. The two pressure sensors 426 are movably attached to the limit rod 421. The worktable 11 is equipped with a controller 12. The pressure sensors 426 and the first power component 93 are all electrically connected to the controller 12.

[0061] When it is necessary to fix the copper-clad laminate 3, the technician places the copper-clad laminate 3 into the receiving hole 21. At this time, the support plate 2 is in a horizontal state, and the upward-facing opening end of the receiving hole 21 is in a connected state, which makes it easy for the technician to put the copper-clad laminate 3 into the receiving groove. The two movable plates 41 located at the bottom of the support plate 2 block the downward-facing opening end of the receiving hole 21 and fit against the copper-clad laminate 3. At the same time, the side wall of the copper-clad laminate 3 fits against the inner side wall of the receiving hole 21. The two surfaces of the copper-clad laminate 3 are respectively aligned with the opposite side walls of the support plate 2, thereby achieving the support and fixation of the copper-clad laminate 3 and making it less prone to bending and deformation. This is the initial state of the movable plate 41.

[0062] Then the technicians start the equipment. At this time, the controller 12 drives the first power component 93 to work. The first power component 93 drives the active worm gear 92 to rotate, which drives the driven worm wheel 91 to rotate, realizing the rotation of the support plate 2. At this time, the limiting rod 421 abuts against the inner wall of the limiting groove 422, so that the limiting rod 421 and the guide post 425 rotate synchronously, thereby making the guide post 425 slide in the guide groove. Since the guide groove includes two oppositely arranged guide grooves 424, the guide grooves 424 are spirally arranged along the peripheral wall of the rotating hole, so that the limiting rod 421 slides in the limiting groove 422, thereby making the two movable plates 41 of one group slide closer to each other, and the two movable plates 41 of the other group slide further away from each other. At the same time, when the support plate 2 rotates, the movable plates 41 on both sides of the support plate 2 simultaneously fit with the copper-clad laminate 3, making it difficult for the copper-clad laminate 3 to slip out of the receiving hole 21.

[0063] When the copper-clad laminate 3 warps or deforms, it easily presses against the movable plate 41, causing relative movement of the movable plate 41. This causes the limiting rod 421 to adhere to and press against the pressure sensor 426 until any pressure sensor 426 reaches the set threshold, indicating that the copper-clad laminate 3 warps or deforms significantly. At this point, the controller 12 drives the first power component 93 to stop working. Then, the technician removes the copper-clad laminate 3, marks it as defective, and inspects the next copper-clad laminate 3, thus achieving a rough inspection of the copper-clad laminate 3 and improving inspection efficiency.

[0064] When the copper-clad laminate 3 does not show obvious warping or deformation, the first power component 93 continues to work until the support plate 2 rotates to a horizontal position again. Through the self-locking of the worm gear, the copper-clad laminate 3 is kept horizontal. Since one end of the guide groove 424 near the support plate 2 is located below the axis of the support cylinder 423, and the other end of the guide groove 424 is located above the support coaxial line, the movable plate 41 moves to the initial state, realizing the synchronous coordination of the flipping of the copper-clad laminate 3 and the support and fixation of the copper-clad laminate 3, improving the operating efficiency of the equipment, and saving power.

[0065] Furthermore, a switching component 6 is installed on rack 1, as shown in the reference. Figure 4 and Figure 5The switching assembly 6 includes a switching plate 61 slidably connected to the frame 1. The sliding direction of the switching plate 61 is consistent with the width direction of the frame 1. The switching plate 61 is located on the side of the support plate 2 away from the worktable 11. A lead screw nut 62 is fixed on the side wall of the switching plate 61 away from the worktable 11. A switching lead screw 63 is rotatably connected to the frame 1. The rotation axis of the switching lead screw 63 is parallel to the sliding direction of the switching plate 61. The switching lead screw 63 and the lead screw nut 62 are threadedly matched. A second power component 64 for driving the switching lead screw 63 to rotate is provided on the frame 1. In this application, the second power component 64 is a lead screw motor.

[0066] To inspect the surface of the copper-clad laminate 3, an inspection assembly 5 is installed on the rack 1, as shown in the reference. Figure 4 The detection component 5 includes a light shield 51 that is lifted and connected to the switching plate 61. The light shield 51 is located between the switching plate 61 and the support plate 2, and the light shield 51 and the side wall of the support plate 2 away from the worktable 11 are movably attached. The bottom of the light shield 51 is open. A transparent plate 52 is fixedly inclined inside the light shield 51. The side of the transparent plate 52 near the opening end of the light shield 51 is movably attached to the copper-clad laminate 3. A monochrome light source 53 and a video detection module 54 are fixed inside the light shield 51. Both the monochrome light source 53 and the video detection module 54 are arranged facing the support plate 2. In this application, the monochrome light source 53 is set as an LED monochrome lamp. A lifting component 55 is provided on the frame 1 to drive the light shield 51 to rise and fall.

[0067] Reference Figure 4 The lifting component 55 includes a connecting rod 551 fixed to the top of the sunshade 51. The connecting rod 551 is slidably inserted through the switching plate 61. The sliding direction of the connecting rod 551 is consistent with the height direction of the frame 1. In order to improve the stability of the lifting of the sunshade 51, two connecting rods 551 are provided. The two connecting rods 551 are arranged opposite each other. Two abutting blocks 552 are fixed on the frame 1. The two abutting blocks 552 correspond one-to-one with the two connecting rods 551. The side wall of the abutting block 552 near the connecting rod 551 is inclined. A roller 553 is rotatably connected to the end of the connecting rod 551 away from the sunshade 51. The rotation axis of the roller 553 is parallel to the rotation axis of the support plate 2. The roller 553 is movably abutted against the inclined side of the abutting block 552.

[0068] After the copper-clad laminate 3 is fixed, the second power component 64 drives the switching screw 63 to rotate, causing the screw nut 62 to slide against the switching plate 61, thereby causing the light shield 51 and the connecting rod 551 to move synchronously, so that the inclined side of the pressing block 552 presses against the roller 553, and drives the connecting rod 551 to slide towards the support plate 2, realizing the descent of the light shield 51 until the light shield 51 corresponds to the support plate 2. At this time, the light shield 51 descends to fit against the support plate 2, and the side of the transparent plate 52 near the opening end of the light shield 51 fits against the copper-clad laminate 3, so that a wedge-shaped air film is formed between the transparent plate 52 and the surface of the copper-clad laminate 3. Then the second power component 64 stops working.

[0069] Then, the monochromatic light source 53 emits parallel monochromatic light towards the copper-clad laminate 3, causing the incident light to be reflected on the upper and lower surfaces of the air film respectively, and the two reflected beams interfere to form interference fringes. At the same time, the video detection module 54 acquires and records the interference fringe image, and analyzes the shape, spacing and deformation degree of the interference fringes. When the surface of the copper-clad laminate 3 is uneven, the interference fringes appear to be curved, twisted or unevenly spaced. When the surface of the copper-clad laminate 3 is flat, the interference fringes appear as uniform parallel lines, realizing the detection of the flatness of the surface of the copper-clad laminate 3. The detection efficiency is high, and the detection is non-contact, reducing the risk of damage to the surface of the copper-clad laminate 3 and improving the detection accuracy.

[0070] After the test is completed, the second power component 64 drives the switching plate 61 to slide in the opposite direction. Under the elastic force, the connecting rod 551 slides away from the support plate 2, realizing the rise of the light shield 51 until the light shield 51 is misaligned with the support plate 2, so that the light shield 51 can easily prevent the support plate 2 from rotating, which is convenient for the next test. At the same time, the sliding of the switching plate 61 and the raising / lowering of the light shield 51 are synchronized, which improves the operating efficiency of the equipment and saves power. Meanwhile, when the switching plate 61 slides, the light shield 51 does not contact the support plate 2, so that the light shield 51 and the support plate 2 are not prone to gaps due to friction, thereby improving the light shielding performance of the light shield 51 and improving the accuracy of the test.

[0071] Furthermore, in order to clean the surface of the copper-clad laminate 3 to be inspected, a cleaning component 7 is provided on the rack 1, as shown in the figure. Figure 5 and Figure 6The cleaning component 7 includes a cleaning roller 71 rotatably connected to the switching plate 61. The rotation axis of the cleaning roller 71 is parallel to the rotation axis of the support plate 2. A cleaning cylinder 73 is coaxially fixed on the outer peripheral wall of the cleaning roller 71. In this application, the cleaning cylinder 73 is made of sponge material. In other embodiments, the cleaning cylinder 73 can also be made of other materials such as microfiber cloth or soft brush. The cleaning cylinder 73 is movably attached to the side wall of the copper-clad plate 3 away from the worktable 11. A rotating cylinder 72 is coaxially rotatably connected inside the cleaning roller 71. The rotating cylinder 72 has a plurality of first connecting holes 721 and the cleaning roller 71 has a plurality of second connecting holes 711. The plurality of first connecting holes 721 and the plurality of second connecting holes 711 are movably corresponding. The rotating connection of the rotating cylinder 72 and the cleaning roller 71 is provided with damping so that when the first gear 781 is separated from the two first racks 783 and when the second gear 782 is separated from the two second racks 784, the rotating cylinder 72 and the cleaning roller 71 are not easy to rotate.

[0072] A liquid storage tank 74 for storing cleaning fluid is fixed on the top of the switching plate 61. A liquid dispensing pump 75 is fixed on the liquid storage tank 74. A connecting hose connects the liquid dispensing pump 75 and the rotating cylinder 72. A drive component 78 is provided on the frame 1 to make the first connecting hole 721 correspond to the second connecting hole 711.

[0073] Reference Figure 5 and Figure 6 The driving component 78 includes a first gear 781 coaxially fixed on the rotating shaft of the rotating cylinder 72 and a second gear 782 coaxially fixed on the rotating shaft of the cleaning roller 71. The first gear 781 and the second gear 782 are arranged opposite to each other. A first rack 783 and a second rack 784 are respectively fixed on the two movable plates 41 of each group, and the first rack 783 and the second rack 784 are arranged alternately. The first gear 781 is selectively engaged with one of the two first racks 783, and the second gear 782 is selectively engaged with one of the two second racks 784.

[0074] When the support plate 2 is in a horizontal state, the first gear 781 is in active engagement with the first rack 783 located at the top of the support plate 2, and the second gear 782 is in active engagement with the second rack 784 located at the top of the support plate 2. Before cleaning, the distance between the first gear 781 and the corresponding first rack 783 is less than the distance between the second gear 782 and the corresponding second rack 784.

[0075] In order to remove the cleaning solution remaining on the copper-clad laminate 3 and reduce the impact of the residual cleaning solution on the reflection of the monochromatic light source 53, refer to Figure 5The cleaning component 7 also includes a blower plate 76 fixed to the bottom of the switching plate 61. The blower plate 76 is hollow and is located between the light shield 51 and the cleaning roller 71. Multiple air outlets are provided on the side wall of the blower plate 76 near the support plate 2. An air pump 77 is fixed to the bottom of the switching plate 61 and is connected to the blower plate 76.

[0076] Before the surface flatness of the copper-clad laminate 3 is tested, the second power component 64 operates, enabling the switching plate 61 to slide, thereby driving the cleaning roller 71 to move and aligning it with the support plate 2. At this time, the first gear 781 meshes with the first rack 783 located at the top of the support plate 2. Then, the cleaning roller 71 continues to move, causing the first rack 783 to drive the first gear 781 to rotate, thereby driving the rotating cylinder 72 to rotate until the cleaning cylinder 73 is in contact with the copper-clad laminate 3. At this time, the first connecting hole 721 aligns with the second connecting hole 711, and the second gear 782 meshes with the second rack 784 located at the top of the support plate 2. The cleaning roller 71 continues to move, causing the cleaning cylinder 73 to wipe and clean the copper-clad laminate 3, reducing the influence of dust and other impurities on the surface of the copper-clad laminate 3 on the test results and improving the accuracy of the surface flatness test of the copper-clad laminate 3.

[0077] Simultaneously, the second rack 784 drives the second gear 782 to rotate, thereby driving the cleaning roller 71 to rotate, so that the cleaning cylinder 73 can rotate and wipe the copper-clad board 3 to improve the cleaning effect. At this time, the cleaning roller 71 and the rotating cylinder 72 rotate synchronously, so that the first connecting hole 721 and the second connecting hole 711 are in a corresponding state. At the same time, the liquid pump 75 pumps the cleaning liquid in the liquid storage tank 74 into the rotating cylinder 72 through the connecting hose, so that the cleaning liquid continuously flows to the cleaning cylinder 73 through the first connecting hole 721 and the second connecting hole 711, further improving the cleaning effect.

[0078] Until the cleaning cylinder 73 moves to the point of separation from the copper-clad laminate 3, at which point the first gear 781 separates from the corresponding first rack 783. Then the cleaning roller 71 continues to move. At this time, the first gear 781 and the rotating cylinder 72 do not rotate. Meanwhile, the second rack 784 continues to drive the second gear 782 to rotate, causing the first connecting hole 721 and the second connecting hole 711 to be misaligned. This continues until the cleaning roller 71 is misaligned from the support plate 2. At this point, the second gear 782 separates from the corresponding second rack 784, keeping the first connecting hole 721 and the second connecting hole 711 in a misaligned state. This achieves precise control of the outflow of cleaning fluid and avoids waste of cleaning fluid.

[0079] After wiping and cleaning, the switching plate 61 continues to slide, so that the blower plate 76 corresponds to the support plate 2. At the same time, the air pump 77 works, allowing external air to enter the blower plate 76 and blow it onto the support plate 2 through the air outlet, blowing away the residual cleaning liquid on the surface of the copper-clad board 3, keeping the surface of the copper-clad board 3 dry, reducing the impact of residual cleaning liquid on the reflection of the monochromatic light source 53, and improving the accuracy of detection.

[0080] After the test is completed, the switching plate 61 slides in the reverse direction, causing the cleaning roller 71 to move to the position before cleaning. At this time, the second gear 782 and the first gear 781 mesh with the corresponding second rack 784 and the first rack 783 to achieve the second cleaning.

[0081] Furthermore, in order to collect the cleaning solution after cleaning, a collection component 8 is provided on the rack 1, as shown in the figure. Figure 7 The collection component 8 includes a collection box 81 movably placed inside the workbench 11. The top wall of the collection box 81 is open. A collection trough 82 is opened on the top of the workbench 11. A drain hole 83 is opened on the inner bottom wall of the collection trough 82. The drain hole 83 is connected to the inside of the workbench 11, and the collection box 81 is placed directly below the drain hole 83. A cleaning port 84 is opened on the side wall of the workbench 11 for removing the collection box 81. A cover plate 85 is detachably fixed on the workbench 11 to movably seal the cleaning port 84.

[0082] During cleaning, the cleaning fluid falls into the collection tank 82 on the top of the workbench 11 and enters the collection box 81 through the drain hole 83, thereby collecting and cleaning the cleaning fluid and improving the cleanliness of the workbench 11. At the same time, according to the cleaning frequency, the technicians regularly remove the cover plate 85, take out the collection box 81 from the cleaning port 84, and recycle the cleaning fluid in the collection box 81.

[0083] The implementation principle of the copper clad laminate surface flatness testing device in this application embodiment is as follows: When testing is required, the technician places the copper clad laminate 3 into the receiving hole 21. At this time, the support plate 2 is in a horizontal state, and the upward opening end of the receiving hole 21 is in a connected state. The two movable plates 41 located at the bottom of the support plate 2 block the downward opening end of the receiving hole 21 and fit against the copper clad laminate 3. At the same time, the side wall of the copper clad laminate 3 fits against the inner side wall of the receiving hole 21, and the two surfaces of the copper clad laminate 3 are respectively consistent with the opposite side walls of the support plate 2, so as to achieve support and fixation of the copper clad laminate 3. This is the initial state of the movable plate 41.

[0084] Then the technicians start the equipment. At this time, the controller 12 drives the first power component 93 to work. The first power component 93 drives the active worm gear 92 to rotate, which drives the driven worm wheel 91 to rotate, realizing the rotation of the support plate 2. This drives the limit rod 421 and the guide column 425 to rotate synchronously, and makes the guide column 425 slide in the guide groove, so that the limit rod 421 slides in the limit groove 422. This causes the two movable plates 41 of one group to slide closer to each other, and the two movable plates 41 of the other group to slide further away from each other. At the same time, when the support plate 2 rotates, the movable plates 41 on both sides of the support plate 2 simultaneously come into contact with the copper-clad laminate 3, making it difficult for the copper-clad laminate 3 to slip out of the receiving hole 21.

[0085] When the copper-clad laminate 3 warps or deforms, it easily presses against the movable plate 41, causing the movable plate 41 to move relative to the movable plate 41. This causes the limiting rod 421 to adhere to and press against the pressure sensor 426 until any pressure sensor 426 reaches the set threshold, indicating that the copper-clad laminate 3 warps or deforms significantly. At this point, the controller 12 drives the first power component 93 to stop working. Then, the technician removes the copper-clad laminate 3, marks it as unqualified, and inspects the next copper-clad laminate 3, thus achieving a rough inspection of the copper-clad laminate 3.

[0086] When the copper-clad laminate 3 does not show obvious warping or deformation, the first power component 93 continues to work until the support plate 2 rotates to be horizontal again, and the copper-clad laminate 3 is kept horizontal by the self-locking of the worm gear.

[0087] Then the second power component 64 operates, driving the switching screw 63 to rotate, causing the screw nut 62 to slide against the switching plate 61, thereby driving the cleaning roller 71 to move, so that the cleaning roller 71 corresponds to the support plate 2, and the cleaning cylinder 73 moves to fit against the copper-clad laminate 3. At this time, the first gear 781 moves to mesh with the first rack 783 located at the top of the support plate 2, and the first rack 783 drives the first gear 781 to rotate, thereby driving the rotating cylinder 72 to rotate, so that the first connecting hole 721 corresponds to the second connecting hole 711. At the same time, the second gear 782 meshes with the second rack 784 located at the top of the support plate 2.

[0088] The cleaning roller 71 continues to move, causing the second rack 784 to drive the second gear 782 to rotate, thereby driving the cleaning roller 71 to rotate, so that the cleaning cylinder 73 can rotate and wipe the copper-clad board 3 for cleaning. At the same time, the liquid pump 75 pumps the cleaning liquid in the storage tank 74 into the rotating cylinder 72 through the connecting hose, so that the cleaning liquid flows continuously to the cleaning cylinder 73 through the first connecting hole 721 and the second connecting hole 711.

[0089] The cleaning roller 71 continues to move, causing the cleaning cylinder 73 to separate from the copper-clad laminate 3 and the cleaning roller 71 to be misaligned from the support plate 2. At this time, the first gear 781 separates from the corresponding first rack 783, and the first gear 781 does not rotate with the rotating cylinder 72. The second rack 784 continues to drive the second gear 782 to rotate, causing the first connecting hole 721 to be misaligned from the second connecting hole 711. At this time, the second gear 782 separates from the corresponding second rack 784, keeping the first connecting hole 721 and the second connecting hole 711 in a misaligned state, thereby achieving precise control of the outflow of cleaning fluid.

[0090] The second power component 64 drives the switching plate 61 to continue sliding, so that the blower plate 76 corresponds to the support plate 2. At the same time, the air pump 77 works, allowing external air to enter the blower plate 76 and blow it onto the support plate 2 through the air outlet, thus blowing away the cleaning liquid remaining on the surface of the copper-clad board 3.

[0091] Then the second power component 64 drives the switching plate 61 to continue sliding, thereby causing the light shield 51 and the connecting rod 551 to move synchronously, so that the inclined side of the pressing block 552 presses against the roller 553, and drives the connecting rod 551 to slide towards the support plate 2, so that the light shield 51 is lowered until the light shield 51 corresponds to the support plate 2. At this time, the light shield 51 is lowered to fit against the support plate 2, and the side of the transparent plate 52 near the opening end of the light shield 51 fits against the copper-clad laminate 3, so that a wedge-shaped air film is formed between the transparent plate 52 and the surface of the copper-clad laminate 3. Then the second power component 64 stops working.

[0092] Then, the monochromatic light source 53 emits parallel monochromatic light toward the copper-clad laminate 3, causing the incident light to be reflected on the upper and lower surfaces of the air film respectively, and the two reflected beams interfere to form interference fringes. At the same time, the video detection module 54 acquires and records the interference fringe image, and analyzes the shape, spacing and deformation degree of the interference fringes to determine the flatness of the surface of the copper-clad laminate 3, thereby realizing the detection of the flatness of the surface of the copper-clad laminate 3.

[0093] After the test is completed, the second power component 64 drives the switching plate 61 to slide in the opposite direction until the cleaning roller 71 moves to the position before cleaning. At the same time, the connecting rod 551 slides away from the support plate 2 under the elastic force, so that the light shield 51 rises while the switching plate 61 moves.

[0094] Then the controller 12 drives the first power component 93 to work, so that the support plate 2 rotates until the support plate 2 rotates to be horizontal again. Then the other surface of the copper clad board 3 is cleaned and inspected. Then the technicians remove the inspected copper clad board 3 and put in the next copper clad board 3, so as to realize the cyclic inspection.

[0095] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A copper-clad laminate surface flatness testing device, characterized in that: The device includes a frame, a worktable mounted on the frame, and a support plate rotatably mounted on the worktable. The support plate has a receiving hole for the movable installation of the copper-clad laminate. The frame is equipped with a sealing component for movably sealing the opening end of the receiving hole, a flipping component for driving the support plate to rotate, and a detection component for detecting the surface flatness of the copper-clad laminate. The detection assembly includes a light shield that is lifted and mounted on a frame. The light shield is movably fitted to the side wall of the support plate away from the worktable. The bottom of the light shield is open. A transparent plate is inclinedly arranged inside the light shield. The downward inclined side of the transparent plate is movably fitted to the copper-clad laminate. A monochromatic light source and a video detection module are provided inside the light shield. A lifting component for driving the light shield to rise and fall is provided on the frame. The sealing assembly includes two sets of movable plates slidably disposed on the support plate. The two sets of movable plates selectively seal one of the two opening ends of the receiving hole. Each set of movable plates includes two movable plates that slide closer to or further away from each other. The copper-clad laminate is movably attached to the side wall of the movable plate that is close to each other. The frame is provided with an adjusting component that drives the movable plates to slide synchronously. When the support plate is rotated to a horizontal position, the two movable plates at the top of the support plate move away from each other and make the upward-facing opening of the receiving hole connected, while the two movable plates at the bottom of the support plate move closer to each other and block the downward-facing opening of the receiving hole.

2. The copper clad laminate surface flatness testing device according to claim 1, characterized in that: The adjusting component includes a limiting rod disposed on the movable plate. A limiting groove is provided on the rotating shaft of the support plate for the limiting rod to slide. The limiting rod is movably abutted against the inner side wall of the limiting groove. Two support cylinders are provided on the worktable. The two support cylinders are coaxially rotatably connected to both ends of the rotating shaft of the support plate. Each set of two movable plates corresponds one-to-one with the two support cylinders. A guide groove is provided on the inner peripheral wall of the support cylinder. A guide post is provided at the end of the limiting rod away from the movable plate. The guide post is slidably adapted to the guide groove. The guide groove includes two oppositely arranged guide grooves. The guide grooves are spirally arranged around the inner peripheral wall of the support cylinder. The two guide grooves are interconnected and the connection is smoothly transitioned. A cleaning component for cleaning the surface of the copper-clad laminate is provided on the frame. A switching component that makes the cleaning component and the detection component correspond to the movement of the support plate is also provided on the frame.

3. The copper clad laminate surface flatness testing device according to claim 2, characterized in that: Each of the support cylinders is equipped with two pressure sensors, which correspond one-to-one with two movable plates on one of the support cylinders. The two pressure sensors are movably attached to the limiting rod. A controller is provided on the worktable, and the pressure sensors and the flipping assembly are electrically connected to the controller.

4. The copper clad laminate surface flatness testing device according to claim 3, characterized in that: The switching assembly includes a switching plate slidably mounted on the frame, a lead screw nut on the switching plate located on the side wall of the switching plate away from the worktable, a switching lead screw rotatably mounted on the frame, the switching lead screw being threadedly adapted to the lead screw nut, a light shield being raised and lowered on the switching plate, a cleaning assembly mounted on the switching plate, and a second power component on the frame for driving the switching lead screw to rotate.

5. The copper clad laminate surface flatness testing device according to claim 4, characterized in that: The lifting component includes a connecting rod located at the top of the light shield. The connecting rod is elastically slidably installed through the switching plate. A clamping block is provided on the frame. The side wall of the clamping block near the connecting rod is inclined. The end of the connecting rod away from the light shield is movably clamped against the inclined side of the clamping block.

6. The copper clad laminate surface flatness testing device according to claim 5, characterized in that: The cleaning assembly includes a cleaning roller mounted on the switching plate. The cleaning roller is movably fitted against the side wall of the copper-clad laminate away from the worktable. A rotating cylinder is coaxially rotatably mounted inside the cleaning roller. The rotating cylinder has multiple first connecting holes, and the cleaning roller has multiple second connecting holes. The multiple first connecting holes and the multiple second connecting holes movably correspond to each other. The switching plate is provided with a storage tank for storing cleaning fluid. The storage tank is provided with a dispensing pump. A connecting hose connects the dispensing pump and the rotating cylinder. The frame is provided with a driving component that aligns the first connecting holes with the second connecting holes. The frame is also provided with a collection assembly for collecting the cleaning fluid after cleaning.

7. The copper clad laminate surface flatness testing device according to claim 6, characterized in that: The cleaning roller is rotatably mounted on the switching plate. The driving component includes a first gear coaxially mounted on the rotating shaft of the rotating drum and a second gear coaxially mounted on the rotating shaft of the cleaning roller. The first gear and the second gear are arranged opposite to each other. Each of the two movable plates in each group is respectively provided with a first rack and a second rack, and the first rack and the second rack are arranged alternately. The first gear selectively engages with one of the two first racks, and the second gear selectively engages with one of the two second racks. When the support plate is in a horizontal state, the first gear is movably engaged with the first rack located on the top of the support plate, and the second gear is movably engaged with the second rack located on the top of the support plate. Before cleaning, the distance between the first gear and the corresponding first rack is less than the distance between the second gear and the corresponding second rack.

8. The copper clad laminate surface flatness testing device according to claim 7, characterized in that: The cleaning assembly also includes a blower plate located at the bottom of the switching plate. The blower plate is hollow inside and has multiple air outlets on its side wall near the support plate. An air pump is provided on the switching plate and is connected to the blower plate.

9. The copper clad laminate surface flatness testing device according to claim 8, characterized in that: The collection assembly includes a collection box movably disposed within the workbench, with the top wall of the collection box being open. A collection trough is provided on the top of the workbench, and a drain hole is provided on the inner bottom wall of the collection trough. The drain hole is connected to the inside of the workbench, and the collection box is located directly below the drain hole.

10. The copper clad laminate surface flatness testing device according to claim 9, characterized in that: The flipping assembly includes a driven worm gear coaxially mounted on the rotating shaft of the support plate, a driving worm gear rotatably mounted on the worktable, the driving worm gear meshing with the driven worm gear, and a first power component for driving the driving worm gear to rotate on the worktable.

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