Circuit board detection device based on optical image

Abstract

The invention relates to the field of circuit board detection, in particular to a circuit board detection device based on optical images, which comprises a supporting table, vertical plates are connected to two sides of the top of the supporting table, an adjusting mechanism is mounted between the two vertical plates, the adjusting mechanism comprises a cross beam, and a toothed plate is connected to the inner wall of the cross beam. The surface of the toothed plate is engaged with a gear column, the top of the gear column is connected with a driving motor, and the bottom of the gear column is connected with a vertical pipe in a penetrating mode. According to the application, the camera can be driven to transversely move, the transverse position of the camera is finely adjusted, a bottom lens of the camera is accurately aligned with a circuit board on the supporting table, the circuit board is accurately photographed and scanned, data is fed back to the PLC, and the data is compared with a qualified circuit board picture; the top of the PLC is connected with the voice alarm, if the circuit board is unqualified, an operator is prompted through the voice alarm, and the detection efficiency and the detection precision of the circuit board are improved.

Description

Technical Field

[0001] The present invention relates to the field of circuit board detection. Specifically, it relates to a circuit board detection device based on optical images. Background Art

[0002] An optical detection device for printed circuit boards generally refers to a device that uses optical detection to detect printed circuit boards. A printed circuit board, also known as a printed wiring board, is a provider of electrical connections for electronic components. Printed circuit boards are mostly represented by "PCB", and cannot be called "PCB board". For the appearance detection of traditional circuit boards, many are still directly detected manually by directly observing the surface weldments of the circuit board. This detection method is time-consuming, laborious, and has low efficiency. With the development of technology, the existing technology uses an optical detection device to detect the circuit board, takes pictures and scans the circuit board through an industrial camera, and compares and detects with the pictures of qualified circuit boards. The flexibility of the camera lens is poor, it is not convenient to finely adjust it, it is not convenient to better collect the picture information of the circuit board, and the detection accuracy of the circuit board is reduced.

[0003] For example: The "Optical Detection Device for Printed Circuit Boards" disclosed in the Chinese Utility Model Patent (Application No.: 202022169336.4), its specification discloses that an optical detection device for printed circuit boards generally refers to a device that uses optical detection to detect printed circuit boards. A printed circuit board, also known as a printed wiring board, is a provider of electrical connections for electronic components. Printed circuit boards are mostly represented by "PCB", and cannot be called "PCB board". The lens of the existing optical detection device for printed circuit boards is not easy to adjust its position, and its practicability is not very high; therefore, it does not meet the existing requirements, and for this we propose an optical detection device for printed circuit boards; the above patent can prove the defects existing in the prior art.

[0004] Therefore, we make improvements on this and propose a circuit board detection device based on optical images. Summary of the Invention

[0005] The purpose of the present invention is to address the problem that currently exists, namely, the flexibility of the camera lens is poor, it is not convenient to finely adjust it, it is not convenient to better collect the picture information of the circuit board, and the detection accuracy of the circuit board is reduced.

[0006] To achieve the above-mentioned invention purpose, the present invention provides a circuit board detection device based on optical images to improve the above problems.

[0007] Specifically, this application is as follows: A circuit board detection device based on optical images, including a support platform. On both sides of the top of the support platform, vertical plates are connected. An adjustment mechanism is installed between the two vertical plates. The adjustment mechanism includes a cross beam. A toothed plate is connected to the inner wall of the cross beam. A gear column is meshed with the surface of the toothed plate. The top of the gear column is connected to a driving motor. The bottom of the gear column is connected through a vertical pipe. The front side of the vertical pipe is connected with a connecting rod. The front side of the connecting rod is connected with a mounting plate. The mounting plate is connected with a camera through bolts. The camera is electrically connected to a PLC controller. The bottom of the PLC controller is connected to the support platform through a support plate.

[0008] As a preferred technical solution of the present application, a support rail is connected to the top of the cross beam. A sliding seat is movably sleeved on the surface of the support rail. The top of the sliding seat is fixedly connected to the driving motor through an L-shaped plate. Horizontal holes are opened at the top and bottom of the cross beam. The bottom of the vertical pipe penetrates through the horizontal hole and is movably connected to the horizontal hole. A guide plate is connected to the bottom of the cross beam. A guide sleeve is sleeved on the bottom of the guide plate. The bottom of the guide sleeve is connected to a support plate. The bottom of the support plate is connected to the connecting rod.

[0009] As a preferred technical solution of the present application, the top of the vertical pipe penetrates into the inner cavity of the gear column and is communicated with a one-way air outlet valve. The top of the one-way air outlet valve is movably connected to the top of the inner wall of the gear column. Through holes are opened on the surface of the one-way air outlet valve. The top of the gear column is communicated with a one-way air inlet valve. A piston plate is sleeved on the surface of the vertical pipe. The piston plate is located in the inner cavity of the gear column. The bottom of the piston plate is connected with a movable pipe. The bottom of the movable pipe penetrates to the bottom of the gear column and is sleeved with a connecting ring. The movable pipe is movably sleeved on the surface of the vertical pipe.

[0010] As a preferred technical solution of the present application, an L-shaped telescopic hose is communicated with the surface of the vertical pipe. One end of the L-shaped telescopic hose away from the vertical pipe is communicated with an L-shaped pipe. An air outlet cover is communicated with the front side of the L-shaped pipe. Mesh plates are inlaid on both sides of the camera. One side of the air outlet cover is in contact with the left mesh plate.

[0011] As a preferred technical solution of the present application, a connecting plate is connected to the rear side of the connecting rod. A driving rod is connected to the rear side of the connecting plate. Horizontal grooves and spiral grooves are respectively opened on the surface of the driving rod. The spiral groove is communicated with the horizontal groove. A driving pipe is sleeved on the surface of the driving rod. A guide rod is connected to the surface of the driving pipe. One side of the guide rod penetrates into the inner cavity of the horizontal groove.

[0012] As a preferred technical solution of the present application, an electric push rod is connected through the surface of the connecting plate. The rear side of the electric push rod is connected to a driving pipe through a support block. The top of the driving pipe is connected to a first inclined plate through a rotating shaft. One side of the first inclined plate away from the driving pipe is connected to a connecting ring through a rotating shaft. The side of the L-shaped pipe away from the air outlet cover is connected to a driving rod. The rear side of the driving rod is connected to a limiting block.

[0013] As a preferred technical solution of the present application, a positioning mechanism is connected between the two vertical plates. The positioning mechanism includes a sleeve plate that is sleeved on the surface of the vertical plate. One side of the sleeve plate is connected to a horizontal pipe. The inner wall of the horizontal pipe is connected to a first spring. One side of the first spring away from the inner wall of the horizontal pipe is connected to a cross bar. The side of the cross bar away from the first spring is connected to a clamping plate. A convex lens is clamped between the two clamping plates.

[0014] As a preferred technical solution of the present application, a first movable plate is movably sleeved on the surface of the cross bar. The rear side of the first movable plate is connected to a second inclined plate through a rotating shaft. The top of the second inclined plate is connected to a connecting block through a rotating shaft. The top of the connecting block is connected to a segmented independently controlled electric telescopic rod. The top of the segmented independently controlled electric telescopic rod is connected to a cross beam through a support block. A fixed block is sleeved on the surface of the cross bar.

[0015] As a preferred technical solution of the present application, a U-shaped plate is sleeved on the surface of the middle joint rod of the segmented independently controlled electric telescopic rod. The bottom of the U-shaped plate is fixedly connected to the sleeve plate. The bottom of the first movable plate is connected to a vertical rod. A second movable plate is sleeved on the surface of the vertical plate. One side of the second movable plate is connected to a shielding plate. A telescopic cloth is connected between the two shielding plates. A lighting lamp is connected to the inner wall of the shielding plate.

[0016] As a preferred technical solution of the present application, a second spring is sleeved on the surface of the vertical rod. The top of the second spring is connected to the first movable plate. The bottom of the second spring is connected to the second movable plate. The bottom of the vertical rod is connected to a round block.

[0017] Compared with the prior art, the beneficial effects of the present invention are: In the solution of the present application: 1. To solve the problems in the prior art that the lens of a camera has poor flexibility, is not convenient for fine adjustment, is not convenient for better collecting the picture information of a circuit board, and reduces the detection accuracy of the circuit board, the present application can drive the camera to move horizontally by setting a cross beam, a toothed plate, a gear column, a driving motor, a vertical pipe, a connecting rod, a mounting plate, a camera and a PLC controller, finely adjust the horizontal position of the camera, accurately align the bottom lens of the camera with the circuit board on the support table, accurately photograph and scan the circuit board, and feed the data back to the PLC controller. The data is compared with the pictures of qualified circuit boards. A voice alarm is connected to the top of the PLC controller. If the circuit board is unqualified, the operator is prompted by the voice alarm, improving the detection efficiency and detection accuracy of the circuit board; 2. The present application can make two baffle plates approach each other, can push the circuit board on the support table to move, make the circuit board be at the central position at the bottom of the convex lens, avoid the position deviation of the circuit board during the photographing process, accurately position the circuit board, and cooperate with the telescopic cloth and the lighting lamp to illuminate the circuit board and converge the light, improving the clarity of the circuit board photograph; 3. The first spring of the present application tensions the cross bar, and the cross bar tensions the clamping plates, so that the two clamping plates clamp and position the convex lens, improving the stability of the convex lens installation. At the same time, it is convenient to disassemble and replace the convex lens. Different specifications of convex lenses can be replaced as needed, improving the photographing clarity of the camera, improving the detection accuracy of the circuit board. At the same time, the support height of the convex lens can be adjusted, and the distance between the convex lens and the camera lens can be adjusted to improve the photographing clarity. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the overall structural schematic diagram of the circuit board detection device based on optical imaging provided by the present application; Figure 2 is the rear view structural schematic diagram of the circuit board detection device based on optical imaging provided by the present application; Figure 3 is the bottom view structural schematic diagram of the circuit board detection device based on optical imaging provided by the present application; Figure 4 is the schematic diagram of the toothed plate and the gear column of the circuit board detection device based on optical imaging provided by the present application; Figure 5 is the sectional view schematic diagram of the gear column and the piston plate of the circuit board detection device based on optical imaging provided by the present application; Figure 6 is the schematic diagram of the transverse groove and the spiral groove of the circuit board detection device based on optical imaging provided by the present application; Figure 7 is the schematic diagram of the positioning mechanism of the circuit board detection device based on optical imaging provided by the present application; Figure 8Cross-sectional schematic diagram of the horizontal tube and the first spring of the circuit board detection device based on optical images provided by this application.

[0019] Labels in the figure: 1. Support platform; 2. Vertical plate; 3. PLC controller; 4. Adjusting mechanism; 40. Cross beam; 41. Toothed plate; 42. Gear column; 43. Driving motor; 44. Vertical tube; 45. Connecting rod; 46. Mounting plate; 47. Camera; 48. Support rail; 49. Slide block; 410. Horizontal hole; 411. Guide plate; 412. Guide sleeve; 413. Support plate; 414. One-way air outlet valve; 415. Through hole; 416. One-way air inlet valve; 417. Piston plate; 418. Movable tube; 419. Connecting ring; 420. L-shaped telescopic hose; 421. L-shaped tube; 422. Air outlet hood; 423. Mesh plate; 424. Connecting plate; 425. Driving rod; 426. Horizontal groove; 427. Spiral groove; 428. Driving tube; 429. Guide rod; 430. First inclined plate; 431. Limit block; 432. Electric push rod; 5. Positioning mechanism; 50. Sleeve plate; 51. Horizontal tube; 52. First spring; 53. Cross bar; 54. Clamping plate; 55. Convex lens; 56. First movable plate; 57. Second inclined plate; 58. Connecting block; 59. Segmented independent control type electric telescopic rod; 510. Fixed block; 511. U-shaped plate; 512. Vertical rod; 513. Second movable plate; 514. Baffle plate; 515. Telescopic cloth; 516. Lighting lamp; 517. Second spring; 518. Round block. Detailed implementation manners

[0020] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] As described in the background art, the flexibility of the camera lens is poor, it is not convenient to perform fine adjustment on it, it is not convenient to better collect the circuit board picture information, and the circuit board detection accuracy is reduced.

[0022] To solve this technical problem, the present invention provides a circuit board detection device based on optical images, which is applied to the field of circuit board detection.

[0023] Specifically, please refer to Figure 1 . Figure 4 and Figure 5A circuit board detection device based on optical imaging includes a support table 1, both sides of the top of the support table 1 are connected with vertical plates 2, an adjustment mechanism 4 is installed between the two vertical plates 2, the adjustment mechanism 4 includes a crossbeam 40, the inner wall of the crossbeam 40 is connected with a toothed plate 41, the surface of the toothed plate 41 is meshed with a gear column 42, the top of the gear column 42 is connected with a driving motor 43, the bottom of the gear column 42 is penetrated by a vertical pipe 44, the front side of the vertical pipe 44 is connected with a connecting rod 45, the front side of the connecting rod 45 is connected with a mounting plate 46, the mounting plate 46 is connected with a camera 47 by bolts, the camera 47 is electrically connected with a PLC controller 3, the bottom of the PLC controller 3 is connected to the support table 1 through a support plate, the electrical connection and signal connection between the camera 47 and the PLC controller 3 are existing well-known technologies, so they are not repeated here.

[0024] The present application can drive the camera 47 to move laterally, and fine-tune the lateral position of the camera 47, so that the bottom lens of the camera 47 is accurately aimed at the circuit board on the support table 1, and the circuit board is accurately photographed and scanned, and the data is fed back to the PLC controller 3, and the data is compared with the qualified circuit board picture. A voice alarm is connected to the top of the PLC controller 3. If an unqualified circuit board is encountered, the operator is prompted by the voice alarm, thereby improving the detection efficiency and detection accuracy of the circuit board.

[0025] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings.

[0026] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0027] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0028] Example 1, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6, A circuit board detection device based on optical images, including a support platform 1. On both sides of the top of the support platform 1, vertical plates 2 are connected. An adjustment mechanism 4 is installed between the two vertical plates 2. The adjustment mechanism 4 includes a cross beam 40. The inner wall of the cross beam 40 is connected with a toothed plate 41. The surface of the toothed plate 41 meshes with a gear column 42. The top of the gear column 42 is connected with a driving motor 43. The bottom of the gear column 42 penetrates and is connected with a vertical pipe 44. The front side of the vertical pipe 44 is connected with a connecting rod 45. The front side of the connecting rod 45 is connected with a mounting plate 46. The mounting plate 46 is connected with a camera 47 through bolts. The camera 47 is electrically connected with a PLC controller 3. The bottom of the PLC controller 3 is connected to the support platform 1 through a support plate.

[0029] By setting the cross beam 40, the toothed plate 41, the gear column 42, the driving motor 43, the vertical pipe 44, the connecting rod 45, the mounting plate 46, the camera 47 and the PLC controller 3, the camera 47 can be driven to move horizontally, the horizontal position of the camera 47 can be finely adjusted, so that the bottom lens of the camera 47 accurately aligns with the circuit board on the support platform 1, the circuit board can be accurately photographed and scanned, and the data is fed back to the PLC controller 3. The data is compared with the pictures of qualified circuit boards. A voice alarm is connected to the top of the PLC controller 3. If the circuit board is unqualified, the operator is prompted by the voice alarm, improving the detection efficiency and detection accuracy of the circuit board.

[0030] The top of the cross beam 40 is connected with a support rail 48. The surface of the support rail 48 is movably sleeved with a sliding seat 49. The top of the sliding seat 49 is fixedly connected with the driving motor 43 through an L-shaped plate. Horizontal holes 410 are opened at the top and bottom of the cross beam 40. The bottom of the vertical pipe 44 penetrates the horizontal hole 410 and is movably connected with the horizontal hole 410. The bottom of the cross beam 40 is connected with a guide plate 411. The bottom of the guide plate 411 is sleeved with a guide sleeve 412. The bottom of the guide sleeve 412 is connected with a support plate 413. The bottom of the support plate 413 is connected with the connecting rod 45.

[0031] By setting the support rail 48, the sliding seat 49 and the L-shaped plate, the driving motor 43 is guided, which is convenient for the driving motor 43 to move horizontally stably, and can make the gear column 42 mesh tightly with the toothed plate 41. By setting the guide plate 411, the guide sleeve 412, the guide sleeve 412 and the support plate 413, the connecting rod 45 and the camera 47 are guided, which is convenient for the camera 47 to move horizontally stably.

[0032] The top of the vertical pipe 44 penetrates into the inner cavity of the gear column 42 and is connected to a one-way air outlet valve 414. The top of the one-way air outlet valve 414 is movably connected to the top of the inner wall of the gear column 42. Through holes 415 are formed on the surface of the one-way air outlet valve 414. The top of the gear column 42 is connected to a one-way air inlet valve 416. A piston plate 417 is sleeved on the surface of the vertical pipe 44. The piston plate 417 is located in the inner cavity of the gear column 42. A movable pipe 418 is connected to the bottom of the piston plate 417. The bottom of the movable pipe 418 penetrates to the bottom of the gear column 42 and is sleeved with a connecting ring 419. The movable pipe 418 is movably sleeved on the surface of the vertical pipe 44.

[0033] By providing the through holes 415, it is convenient for the gas in the inner cavity of the gear column 42 to enter the inner cavity of the vertical pipe 44 through the through holes 415. By providing the one-way air inlet valve 416, it is convenient for external gas to enter the inner cavity of the gear column 42 for replenishment, forming the flow of gas. By providing the piston plate 417, the gas in the inner cavity of the gear column 42 is squeezed and transported.

[0034] An L-shaped telescopic hose 420 is connected to the surface of the vertical pipe 44. One end of the L-shaped telescopic hose 420 away from the vertical pipe 44 is connected to an L-shaped pipe 421. An air outlet cover 422 is connected to the front side of the L-shaped pipe 421. Mesh plates 423 are inlaid on both sides of the camera 47. One side of the air outlet cover 422 contacts the left mesh plate 423.

[0035] By providing the L-shaped telescopic hose 420, it is convenient for the gas in the inner cavity of the vertical pipe 44 to enter the inner cavity of the L-shaped pipe 421. The L-shaped pipe 421 can stretch the L-shaped telescopic hose 420 during rotation without affecting the gas flow. By providing the mesh plates 423, it is convenient for the inner cavity of the camera 47 to communicate with the external gas, facilitating the heat dissipation of the camera 47.

[0036] A connecting plate 424 is connected to the rear side of the connecting rod 45. A driving rod 425 is connected to the rear side of the connecting plate 424. Horizontal grooves 426 and spiral grooves 427 are respectively formed on the surface of the driving rod 425. The spiral groove 427 communicates with the horizontal groove 426. A driving pipe 428 is sleeved on the surface of the driving rod 425. A guide rod 429 is connected to the surface of the driving pipe 428. One side of the guide rod 429 penetrates into the inner cavity of the horizontal groove 426.

[0037] By providing the horizontal grooves 426 and the spiral grooves 427, the guide rod 429 is guided to facilitate the forward and backward movement of the guide rod 429. When the guide rod 429 moves into the inner cavity of the spiral groove 427, it squeezes the inner wall of the spiral groove 427, enabling the driving rod 425 to rotate. The driving rod 425 drives the L-shaped pipe 421 and the air outlet cover 422 to rotate. When the air outlet cover 422 moves to the lens of the camera 47, it can blow air to remove dust from the lens, blowing off the floating dust sticking to the lens surface, improving the clarity of taking pictures, and avoiding damage caused by wiping the lens with a cloth.

[0038] The surface of the connecting plate 424 is penetrated and connected with an electric push rod 432. The rear side of the electric push rod 432 is connected to the driving tube 428 through a support block. The top of the driving tube 428 is connected with a first inclined plate 430 through a rotating shaft. One side of the first inclined plate 430 away from the driving tube 428 is connected to the connecting ring 419 through a rotating shaft. One side of the L-shaped tube 421 away from the air outlet cover 422 is connected to the driving rod 425. The rear side of the driving rod 425 is connected with a limiting block 431.

[0039] By setting the limiting block 431, the moving distance of the driving tube 428 backward is limited to prevent the driving tube 428 from separating from the driving rod 425 during the moving process.

[0040] Embodiment 2 further optimizes the circuit board detection device based on optical images provided in Embodiment 1. Specifically, as Figure 7 and Figure 8 shown, a positioning mechanism 5 is connected between two vertical plates 2. The positioning mechanism 5 includes a sleeve plate 50 sleeved on the surface of the vertical plate 2. One side of the sleeve plate 50 is connected with a horizontal tube 51. The inner wall of the horizontal tube 51 is connected with a first spring 52. One side of the first spring 52 away from the inner wall of the horizontal tube 51 is connected with a cross bar 53. One side of the cross bar 53 away from the first spring 52 is connected with a clamping plate 54. A convex lens 55 is clamped between the two clamping plates 54.

[0041] By setting the horizontal tube 51, the first spring 52, the cross bar 53, the clamping plate 54 and the convex lens 55, the first spring 52 tensions the cross bar 53, and the cross bar 53 tensions the clamping plate 54, so that the two clamping plates 54 clamp and position the convex lens 55, improving the installation stability of the convex lens 55. At the same time, it is convenient to disassemble and replace the convex lens 55. Different specifications of convex lenses 55 can be replaced according to needs, improving the photographing clarity of the camera 47 and the circuit board detection accuracy.

[0042] Embodiment 3 further optimizes the circuit board detection device based on optical images provided in Embodiment 1 or 2. Specifically, as Figure 8 shown, a first movable plate 56 is movably sleeved on the surface of the cross bar 53. The rear side of the first movable plate 56 is connected with a second inclined plate 57 through a rotating shaft. The top of the second inclined plate 57 is connected with a connecting block 58 through a rotating shaft. The top of the connecting block 58 is connected with a segmented independently controlled electric telescopic rod 59. The top of the segmented independently controlled electric telescopic rod 59 is connected to the cross beam 40 through a support block. A fixed block 510 is sleeved on the surface of the cross bar 53.

[0043] By setting the fixed block 510, when the segmented independent control type electric telescopic rod 59 drives the two first movable plates 56 to move away from each other, the first movable plate 56 pushes the fixed block 510 and the cross bar 53 to move, and the cross bar 53 drives the clamping plate 54 to move away from the convex lens 55, which is convenient for the disassembly and replacement of the convex lens 55. At the same time, the support height of the convex lens 55 can be adjusted, the distance between the convex lens 55 and the lens of the camera 47 can be adjusted, and the clarity of taking pictures can be improved.

[0044] A U-shaped plate 511 is sleeved on the surface of the middle section rod of the segmented independent control type electric telescopic rod 59. The bottom of the U-shaped plate 511 is fixedly connected to the sleeve plate 50. A vertical rod 512 is connected to the bottom of the first movable plate 56. A second movable plate 513 is sleeved on the surface of the vertical plate 2. One side of the second movable plate 513 is connected to a shielding plate 514. A telescopic cloth 515 is connected between the two shielding plates 514. An illuminating lamp 516 is connected to the inner wall of the shielding plate 514.

[0045] By setting the cooperation of the segmented independent control type electric telescopic rod 59 and the shielding plate 514, the two shielding plates 514 can be made to approach each other, and the circuit board on the support table 1 can be pushed to move, so that the circuit board is located at the center position under the convex lens 55, avoiding the position deviation of the circuit board during the photographing process, accurately positioning the circuit board, and through the cooperation with the telescopic cloth 515 and the illuminating lamp 516, illuminating the circuit board, gathering the light, and improving the clarity of photographing the circuit board.

[0046] A second spring 517 is sleeved on the surface of the vertical rod 512. The top of the second spring 517 is connected to the first movable plate 56, and the bottom of the second spring 517 is connected to the second movable plate 513. A round block 518 is connected to the bottom of the vertical rod 512.

[0047] By setting the second spring 517, the second movable plate 513 is tensioned, so that the bottom of the shielding plate 514 contacts the support table 1.

[0048] The using process of a circuit board detection device based on optical imaging provided by the present invention is as follows: S1. Adjust the position of the camera 47: By controlling the PLC controller 3 to control the driving motor 43 to run, the driving motor 43 drives the gear column 42 to rotate. The gear column 42 drives the vertical pipe 44 to move horizontally by meshing with the toothed plate 41. The vertical pipe 44 drives the connecting rod 45, the mounting plate 46 and the camera 47 to move, and the position of the camera 47 is finely adjusted so that the lens of the camera 47 is aligned with the center of the convex lens 55; S2. Cooling of the camera 47: By controlling the operation and contraction of the electric push rod 432 to drive the movement of the drive tube 428, the drive tube 428 pushes the connecting ring 419 and the movable tube 418 upward through the first inclined plate 430. The movable tube 418 drives the piston plate 417 to move upward, increasing the pressure above the piston plate 417, causing the one-way air outlet valve 414 to open. The gas above the piston plate 417 sequentially passes through the through hole 415, the one-way air outlet valve 414, the vertical tube 44, the L-shaped telescopic hose 420, the L-shaped tube 421, the air outlet cover 422, and the mesh plate 423 and enters the interior of the camera 47. The hot air inside the camera 47 is discharged through the mesh plate 423 on the right side to achieve the cooling of the camera 47. When the piston plate 417 returns to its original position, the pressure inside the gear column 42 decreases, causing the one-way air inlet valve 416 to open. External gas enters the interior of the gear column 42 through the one-way air inlet valve 416, and this process repeats cyclically; S3. Dust removal: By operating to drive the drive tube 428 to drive the guide rod 429 to move forward. The guide rod 429 moves into the interior of the spiral groove 427 and presses against the inner wall of the spiral groove 427, prompting the drive rod 425 to rotate, driving the L-shaped tube 421 and the air outlet cover 422 to rotate, so that the air outlet cover 422 rotates to the lens at the bottom of the camera 47. The air outlet cover 422 blows air during rotation to blow off the floating dust adhering to the surface of the lens and perform a dust removal operation on the lens; S4. Circuit board positioning: By controlling the contraction of the middle section of the segmented independently controlled electric telescopic rod 59, driving the U-shaped plate 511, the sleeve plate 50, the horizontal tube 51, the cross bar 53, and the first movable plate 56 to move upward. The first movable plate 56 drives the vertical rod 512, the round block 518, the second movable plate 513, and the shielding plate 514 to move upward, causing the shielding plate 514 to move away from the support table 1. Place the circuit board under the shielding plate 514 on the support table 1. By operating, the shielding plate 514 moves downward to contact the support table 1. By controlling the contraction of the bottom section of the segmented independently controlled electric telescopic rod 59, driving the connecting block 58 and the second inclined plate 57 to move. The second inclined plate 57 pulls the first movable plate 56 to move, and the first movable plate 56 pulls the vertical rod 512, the second movable plate 513, and the shielding plate 514 to move, causing the two shielding plates 514 to move closer to each other. The shielding plate 514 pushes the circuit board to move, placing the circuit board at the center under the convex lens 55. After the circuit board is positioned, the shielding plate 514 moves away from the circuit board. By turning on the lighting lamp 516 to illuminate the circuit board, the camera 47 takes pictures and monitors the circuit board through the convex lens 55; S5. By controlling the contraction of the middle section of the segmented independently controlled electric telescopic rod 59, driving the U-shaped plate 511, the sleeve plate 50, the horizontal tube 51, and the convex lens 55 to move vertically, finely adjusting the distance between the convex lens 55 and the lens of the camera 47 to improve the clarity of the photo; S6. Replace the convex lens 55: By controlling the elongation of the bottom section rod of the segmented independently controlled electric telescopic rod 59, the two first movable plates 56 are moved away from each other. The first movable plate 56 drives the cross bar 53 to move through the fixed block 510, and the cross bar 53 drives the clamping plate 54 to move, so that the clamping plate 54 is separated from the convex lens 55, and the convex lens 55 is disassembled and replaced.

[0049] In the present invention, unless otherwise clearly defined and limited, the terms "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection or communication with each other; it can be directly connected, or indirectly connected through an intermediate medium, it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. The preferred embodiments of the present invention are given in the drawings, but do not limit the patent scope of the present invention. The present invention can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing specific embodiments, or equivalently replace some of the technical features. Any equivalent structure made by using the specification and drawings of the present invention, directly or indirectly applied in other related technical fields, is similarly within the scope of the patent protection of the present invention.

Claims

1. A circuit board detection device based on optical imaging, characterized in that: The invention comprises a support platform (1), wherein both sides of the top of the support platform (1) are connected to vertical plates (2), an adjustment mechanism (4) is installed between the two vertical plates (2), the adjustment mechanism (4) comprises a crossbeam (40), the inner wall of the crossbeam (40) is connected to a toothed plate (41), the surface of the toothed plate (41) is meshed with a gear column (42), the top of the gear column (42) is connected to a driving motor (43), the bottom of the gear column (42) is penetrated and connected to a vertical pipe (44), the front side of the vertical pipe (44) is connected to a connecting rod (45), the front side of the connecting rod (45) is connected to a mounting plate (46), and the mounting plate (46) is connected to a camera (47) via bolts.

2. The circuit board detection device based on optical imaging according to claim 1, characterized in that: The top of the crossbeam (40) is connected to a support rail (48), a slide seat (49) is movably sleeved on the surface of the support rail (48), the top of the slide seat (49) is fixedly connected to the drive motor (43) via an L-shaped plate, the top and bottom of the crossbeam (40) are both provided with a transverse hole (410), the bottom of the vertical pipe (44) passes through the transverse hole (410) and is movably connected to the transverse hole (410), the bottom of the crossbeam (40) is connected to a guide plate (411), the bottom of the guide plate (411) is sleeved with a guide sleeve (412), the bottom of the guide sleeve (412) is connected to a support plate (413), and the bottom of the support plate (413) is connected to a connecting rod (45).

3. The circuit board detection device based on optical imaging according to claim 2, characterized in that: The top of the vertical pipe (44) penetrates into the inner cavity of the gear column (42) and is connected to a one-way air outlet valve (414); the top of the one-way air outlet valve (414) is movably connected to the top of the inner wall of the gear column (42); a through hole (415) is provided on the surface of the one-way air outlet valve (414); the top of the gear column (42) is connected to a one-way air inlet valve (416); a piston plate (417) is sleeved on the surface of the vertical pipe (44); the piston plate (417) is located in the inner cavity of the gear column (42); the bottom of the piston plate (417) is connected to a movable pipe (418); the bottom of the movable pipe (418) penetrates into the bottom of the gear column (42) and is sleeved with a connecting ring (419); the movable pipe (418) is movably sleeved on the surface of the vertical pipe (44).

4. The circuit board detection device based on optical imaging according to claim 3, characterized in that: The surface of the vertical pipe (44) is connected to an L-shaped telescopic hose (420); one end of the L-shaped telescopic hose (420) away from the vertical pipe (44) is connected to an L-shaped pipe (421); the front side of the L-shaped pipe (421) is connected to an air outlet hood (422); mesh plates (423) are inlaid on both sides of the camera (47); one side of the air outlet hood (422) is in contact with the mesh plate (423) on the left side.

5. The circuit board detection device based on optical imaging according to claim 4, characterized in that: The rear side of the connecting rod (45) is connected to a connecting plate (424), and the rear side of the connecting plate (424) is connected to a driving rod (425). The surface of the driving rod (425) is respectively provided with a transverse groove (426) and a spiral groove (427), and the spiral groove (427) is communicated with the transverse groove (426). The surface of the driving rod (425) is sleeved with a driving tube (428), and the surface of the driving tube (428) is connected to a guide rod (429), and one side of the guide rod (429) penetrates into the inner cavity of the transverse groove (426).

6. The circuit board detection device based on optical imaging according to claim 5, characterized in that: An electric push rod (432) is connected through the surface of the connecting plate (424); the rear side of the electric push rod (432) is connected to the driving tube (428) via a support block; the top of the driving tube (428) is connected to a first inclined plate (430) via a rotating shaft; the side of the first inclined plate (430) away from the driving tube (428) is connected to a connecting ring (419) via a rotating shaft; the side of the L-shaped tube (421) away from the air outlet hood (422) is connected to the driving rod (425); and the rear side of the driving rod (425) is connected to a limiting block (431).

7. The circuit board detection device based on optical imaging according to claim 6, characterized in that: A positioning mechanism (5) is connected between the two vertical plates (2), the positioning mechanism (5) comprising a sleeve plate (50), the sleeve plate (50) being sleeved on the surface of the vertical plate (2), one side of the sleeve plate (50) being connected to a transverse tube (51), the inner wall of the transverse tube (51) being connected to a first spring (52), the side of the first spring (52) away from the inner wall of the transverse tube (51) being connected to a transverse rod (53), the side of the transverse rod (53) away from the first spring (52) being connected to a clamping plate (54), and a convex lens (55) being clamped between the two clamping plates (54).

8. The circuit board detection device based on optical imaging according to claim 7, characterized in that: The surface of the crossbar (53) is movably sleeved with a first movable plate (56); the rear side of the first movable plate (56) is connected to a second inclined plate (57) via a rotating shaft; the top of the second inclined plate (57) is connected to a connecting block (58) via a rotating shaft; the top of the connecting block (58) is connected to a segmented independently controlled electric telescopic rod (59); the top of the segmented independently controlled electric telescopic rod (59) is connected to the crossbeam (40) via a supporting block; and the surface of the crossbar (53) is sleeved with a fixed block (510).

9. The circuit board detection device based on optical imaging according to claim 8, characterized in that: A U-shaped plate (511) is sleeved on the surface of the middle section of the segmented independently controlled electric telescopic rod (59); the bottom of the U-shaped plate (511) is fixedly connected to the sleeve plate (50); the bottom of the first movable plate (56) is connected to a vertical rod (512); the surface of the vertical plate (2) is sleeved with a second movable plate (513); one side of the second movable plate (513) is connected to a shielding plate (514); a telescopic cloth (515) is connected between the two shielding plates (514); and the inner wall of the shielding plate (514) is connected to a lighting lamp (516).

10. The circuit board detection device based on optical imaging according to claim 9, characterized in that: A second spring (517) is sleeved on the surface of the vertical rod (512); the top of the second spring (517) is connected to the first movable plate (56); the bottom of the second spring (517) is connected to the second movable plate (513); and the bottom of the vertical rod (512) is connected to a round block (518).

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