Intelligent detection device and detection method for circuit board surface quality

Abstract

The present application relates to an intelligent detection device for the surface quality of a circuit board and a detection method thereof, and relates to the technical field of detection equipment. The device comprises a workbench, a receiving tray, a front detection camera, and a back detection camera. The receiving tray is arranged on the workbench, and the receiving tray is used to receive the circuit board. The front detection camera is arranged on the workbench, and the output end of the front detection camera can be aligned with the receiving tray, and is used to detect the front of the circuit board on the receiving tray. The back detection camera is arranged on the workbench, and is used to detect the back of the circuit board. The workbench is provided with a transfer component, and the transfer component is located between the front detection camera and the back detection camera. The transfer component is provided with a vacuum suction cup, and the vacuum suction cup is used to suck the circuit board. The transfer component can drive the circuit board to the output end of the back detection camera. The present application has the effect of realizing the detection of both sides of the circuit board.

Description

Technical Field

[0001] The present application relates to the field of detection equipment, and in particular to an intelligent detection device for circuit board surface quality and a detection method thereof. Background Art

[0002] Circuit boards are a common product in the industrial sector. By integrating various components onto them, they enable automated production in various industries, significantly improving production efficiency. Since circuit boards are the heart of modern automated industrial equipment, they undergo multiple inspection processes after production to detect surface defects such as scratches, exposed copper, foreign matter, and warping that could affect their performance.

[0003] To inspect circuit boards, intelligent inspection equipment is often used to perform preliminary inspections using simple visual inspection techniques. However, conventional visual cameras can only inspect the side of the board where the electronic components are located. For the soldered side, additional equipment is required to inspect the solder joints, resulting in operational inconvenience and requiring improvement. Summary of the Invention

[0004] In order to improve the problem that existing intelligent detection equipment is unable to perform multi-faceted detection on circuit boards, resulting in inconvenient detection operations, the present application provides an intelligent detection device for circuit board surface quality and a detection method thereof.

[0005] In the first aspect, the present application provides an intelligent circuit board surface quality detection device that adopts the following technical solutions:

[0006] An intelligent detection device for circuit board surface quality and a detection method thereof, comprising:

[0007] Workbench;

[0008] A receiving tray is provided on the workbench and is used to receive circuit boards;

[0009] A front detection camera is provided on the workbench, wherein the output end of the front detection camera can be aligned with the receiving tray and is used to detect the front of the circuit board on the receiving tray;

[0010] A back side inspection camera, provided on the workbench, for inspecting the back side of the circuit board;

[0011] The transfer component is arranged on the workbench and is located between the front detection camera and the back detection camera. The transfer component is provided with a vacuum suction cup, which is used to suck the circuit board. The transfer component can drive the circuit board to the output end of the back detection camera.

[0012] By adopting the above technical solution, when in use, the circuit board is placed on the receiving tray, and the front detection camera is facing the receiving tray to realize the upper surface, i.e., the front surface, of the circuit board on the receiving tray. After the front surface detection of the circuit board is completed, the transfer component is activated to drive the vacuum suction cup to move directly above the receiving tray, and the vacuum suction cup is used to suck the circuit board out of the receiving tray, so that the back surface of the circuit board is separated from the receiving tray and exposed. Then, the transfer component is used again to make the vacuum suction cup adsorb the circuit board and move it to the back detection camera. The back detection camera detects the exposed back surface of the circuit board, realizing the detection of both sides of the circuit board, which is convenient to operate.

[0013] Optionally, the transfer component includes:

[0014] a mounting frame fixed to the workbench;

[0015] A screw rod, the screw rod is horizontally arranged in the installation frame, and the end of the screw rod is rotatably connected to the installation frame;

[0016] A rotary motor is provided at one end of the mounting frame, wherein the output end of the rotary motor is coaxially fixed with one end of the screw rod and is used to drive the screw rod to rotate;

[0017] The mounting seat is sleeved on the screw rod, and the mounting seat is threadedly connected to the screw rod. The screw rod rotates to drive the mounting seat to move horizontally on the mounting frame. The vacuum suction cup is fixed on the mounting seat. The receiving tray and the reverse detection camera are both located on the moving track of the vacuum suction cup. The output end of the front detection camera is downward and can be aligned with the receiving tray, and the output end of the reverse detection camera is upward and can be aligned with the vacuum suction cup.

[0018] By adopting the above technical solution, after the front detection camera has detected the front side of the circuit board on the receiving tray, the rotating motor is started to drive the screw to rotate, so that the mounting base moves on the mounting frame in the length direction of the screw, thereby driving the vacuum suction cup to move to the top of the receiving tray and suck out the circuit board. At this time, the bottom of the circuit board is unobstructed. Then the rotating motor is driven again to make the screw rotate, driving the mounting base to move in the direction of the reverse detection camera until the vacuum suction cup moves to directly above the reverse detection camera. At this time, the back of the circuit board is facing the reverse detection camera, realizing the detection of the back of the circuit board.

[0019] Optionally, a slide is fixed on the workbench, the slide is parallel to the mounting frame, the receiving tray is slidably connected to the slide, the receiving tray is located on the moving track of the vacuum suction cup and is aligned with the slide, and the receiving tray can be moved to directly below the front detection camera.

[0020] By adopting the above technical solution, the receiving tray is driven to move on the slide, and the position of the receiving tray is adjusted so that the receiving tray is facing the front inspection camera, thereby improving the accuracy of the front inspection motor for the front inspection of the circuit board. After the front inspection of the circuit board is completed, the receiving tray is moved again so that the receiving tray moves below the front inspection camera, so that the receiving tray and the front inspection camera are offset. When the screw rotates, the mounting base drives the vacuum suction cup to move directly above the receiving tray, without colliding with the front inspection camera, making the front inspection camera less likely to be damaged and making it easier for the vacuum suction cup to align with the receiving tray and absorb the circuit board.

[0021] Optionally, the receiving tray includes:

[0022] A plurality of front material storage trays are provided on the workbench, a rotating rod is vertically provided in the workbench, the rotating rod can rotate with the central axis of the rotating rod as the axis, the plurality of front material storage trays are radially arranged with the axis of the rotating rod as the center of the circle, the front material storage trays are connected to the rotating rod, and the output end of the front detection camera is downward and aimed at one of the front material storage trays;

[0023] Several reverse material storage trays are arranged on the workbench, and a rotating rod is vertically provided on the workbench. The rotating rod can rotate around the central axis of the rotating rod. Several reverse material storage trays are radially arranged around the axis of the rotating rod as the center of the circle. The reverse material storage trays are connected to the rotating rod. The output end of the reverse detection camera faces downward and is aligned with one of the reverse material storage trays. The transfer assembly is used to interchange the circuit boards on the front material storage tray and the reverse material storage tray.

[0024] By adopting the above technical solution, the circuit boards are stored below the front inspection camera and placed on the front storage tray. The front inspection camera is used to inspect the front of the circuit boards. Similarly, circuit boards are also stored on the back storage tray below the back inspection camera, and the back of the circuit boards are inspected using the back inspection camera. When the inspection is completed, the transfer assembly is started to flip the inspected circuit boards on the front storage tray and place them on the back storage tray so that the back of the circuit boards face up. Then, the inspected circuit boards on the back storage tray are placed on the transfer assembly, and then the transfer assembly is reset, so that the circuit boards on the back storage tray are brought back and placed on the front storage tray with the front side facing up. At this time, the rotating rod is driven to rotate, so that the transported circuit boards are moved under the front inspection camera for front inspection, and the circuit boards that have already been inspected on the front side are moved to the transfer assembly to prepare for the next transport.

[0025] As the rotating rod rotates, it drives the rotating rod to rotate, causing the circuit boards transferred to the reverse storage tray to move under the reverse inspection camera for reverse inspection. The circuit boards that have already been inspected on the reverse side are moved into the range of the transfer assembly to be ready for the next transfer. The combination of several front and rear storage trays, and the transfer assembly's flipping and transporting function, allows for both front and rear inspection of circuit boards, while also allowing for continuous inspection and improving work efficiency.

[0026] Optionally, the transfer component includes:

[0027] A positioning seat is fixed on the workbench, the positioning seat is located between the front detection camera and the back detection camera, and a transfer motor is provided on the positioning seat;

[0028] A transfer rod, one end of which is hinged on the positioning seat, and an output end of the transfer motor is coaxially fixed to one end of the transfer rod, for driving the transfer rod to rotate about the connection between the transfer rod and the positioning seat;

[0029] The vacuum suction cup comprises:

[0030] A front suction cup is fixed on one side of the transfer rod. When the end of the transfer rod away from the positioning seat rotates to the front material storage tray, the front suction cup faces downward and corresponds to one of the front material storage trays.

[0031] The reverse suction cup is fixed on the other side of the transfer rod. When the transfer rod is rotated to the reverse material storage tray away from one end of the positioning seat, the reverse suction cup faces downward and corresponds to one of the reverse material storage trays.

[0032] By adopting the above technical solution, when the front detection of the circuit board on the front stocking tray is completed, the transfer rod is first swung toward the front stocking tray, at which point the back suction cup faces upward, and the circuit board inspected on the front stocking tray is placed on the back suction cup. Then, the transfer motor is started to drive the transfer rod to flip upward until the transfer rod rotates 180°, so that the back suction cup faces downward and is aligned with the back stocking tray. At this time, the circuit board on the back suction cup falls onto the back stocking tray. After the transfer rod flips, the back of the circuit board that fell onto the back stocking tray faces upward. The rotating rod is driven to rotate so that the circuit board moves to the bottom of the front detection motor, thereby realizing the detection of both sides of the circuit board. After the rotation, the front stocking tray located on the transfer rod path is empty, so that the next placement of the circuit board on the back suction cup can be carried out.

[0033] At this point, the front suction cup faces upward. The inspected circuit board on the reverse stocking tray is then placed on the front suction cup. The transfer motor drives the transfer rod to reverse until the front suction cup faces downward, aligning with the front stocking tray. The circuit board on the front suction cup now falls onto the front stocking tray. After the transfer rod flips, the circuit board on the front stocking tray faces upward. The rotating rod is driven to rotate, moving the circuit board below the reverse inspection motor, enabling inspection of both sides of the circuit board. After rotation, the reverse stocking tray in the transfer rod's path is empty, ready for the next placement of the circuit board from the front suction cup. This allows for continuous inspection and improves work efficiency.

[0034] During this process, the side with the circuit board placed upwards is the windward side, which is pressed against the transfer rod by the wind. When the circuit board is placed on the transfer rod, the transfer rod rotates and the circuit board is not likely to slip, thereby increasing the stability of the circuit board transfer process.

[0035] Optionally, the rotating rod and the rotating rod are both provided with a driving ring, the driving ring is fixed on the workbench, the front material storage tray and the rear material storage tray are both fixed with connecting rods, the connecting rod on the front material storage tray is rotatably connected to the rotating rod, the connecting rod on the rear material storage tray is rotatably connected to the rotating rod, the connecting rod is provided with a rotating gear, the rotating gear is fixed to the connecting rod, a rack is fixed on the driving ring, a discharge port is opened on the workbench, the rack is located at the discharge port, and the rotating gear can engage with the rack.

[0036] By adopting the above technical solution, when the rotating rod or the rotating rod rotates, the connecting rod drives the rotating gear to move around the driving ring. When one of the rotating gears moves to engage with the rack, the rotating gear slides on the rack, causing the rotating gear to rotate, driving the connecting rod to rotate, causing the front storage tray or the back storage tray to flip over in the corresponding discharge port, so that the circuit boards that have been inspected on both sides above fall into the feed and discharge ports, realizing automatic discharge and convenient operation.

[0037] Optionally, a coaxial sleeve on the rotating rod is provided with a rotating worm gear, and the rotating worm gear is fixed to the rotating rod. A coaxial sleeve on the rotating rod is provided with a rotating worm gear, and the rotating worm gear is fixed to the rotating rod. A worm is passed through the workbench, and the end of the worm is rotatably connected to the workbench, and the worm is engaged with the rotating worm gear and the rotating worm gear.

[0038] By adopting the above technical solution, the worm is driven to rotate, so that the rotating worm wheel and the rotating worm wheel rotate at the same time, realizing the synchronous movement of several front storage trays and several rear storage trays, and the coordination is better.

[0039] Optionally, a bracket is provided on the workbench, a sliding block is slidably connected to the bracket, and the sliding block can move between the front detection camera and the back detection camera. A vertical cylinder is provided on the sliding block, and the output end of the vertical cylinder is connected to the horizontal cylinder. The output end of the horizontal cylinder is provided with a transfer suction cup, and the transfer suction cup can adsorb the circuit board and move between adjacent front storage trays or adjacent back storage trays.

[0040] By adopting the above technical solution, the sliding block is driven to move on the support frame, so that the transfer suction cup can be moved to the front storage tray or the back storage tray, and the vertical cylinder is used to adjust the up and down height to adsorb the circuit boards on only one side of the front storage tray or the back storage tray that have been inspected. Then, the horizontal cylinder is used to move it to the transfer rod to realize the transportation of the circuit boards to the transfer rod. The degree of mechanization is high, thereby improving the accuracy of movement.

[0041] Optionally, a moving block is fixed to the output end of the transverse cylinder, a steering motor is provided on the moving block, the transfer suction cup is fixed to the output end of the steering motor, and the steering motor is used to drive the transfer suction cup to rotate.

[0042] By adopting the above technical solution, the steering motor enables the angle of the transfer suction cup to be changed, so as to transport the circuit boards on the front storage tray or the back storage tray at different positions to the transfer rod.

[0043] In a second aspect, the present application also provides a detection method for a circuit board surface quality intelligent detection device, which adopts the following technical solution, including the following steps:

[0044] S1. Place the circuit board on the receiving tray and make the front detection camera face the receiving tray to detect the front of the circuit board;

[0045] S2. Start the transfer component to move the vacuum suction cup to the top of the receiving tray, and use the vacuum suction cup to suck the circuit board until the back of the circuit board is separated from the receiving tray;

[0046] S3. Use the transfer component again to move the vacuum suction cup to the back side inspection camera while adsorbing the circuit board. The back side inspection camera inspects the exposed back side of the circuit board, thereby realizing inspection of both sides of the circuit board.

[0047] In summary, this application has at least one of the following beneficial effects:

[0048] 1. When in use, place the circuit board on the receiving tray and make the front detection camera face the receiving tray to detect the upper surface, i.e. the front side, of the circuit board on the receiving tray. When the front side detection of the circuit board is completed, start the transfer component to drive the vacuum suction cup to move to the top of the receiving tray, and use the vacuum suction cup to suck the circuit board out of the receiving tray, so that the back side of the circuit board is separated from the receiving tray and exposed. Then use the transfer component again to make the vacuum suction cup adsorb the circuit board and move it to the back side detection camera. The back side detection camera detects the exposed back side of the circuit board, realizing the detection of both sides of the circuit board. The operation is convenient.

[0049] 2. Start the transfer assembly, flip the inspected circuit boards on the front stock tray and place them on the back stock tray, with the back side facing up. Then, place the inspected circuit boards on the back stock tray on the transfer assembly. The transfer assembly then resets, bringing the circuit boards from the back stock tray back and placing them on the front stock tray with the front side facing up. At this point, the rotating rod is driven to rotate, causing the transported circuit boards to move under the front inspection camera for front-side inspection, while the circuit boards that have already been inspected on the front side are moved to the transfer assembly to prepare for the next transport, and the above steps are repeated. Several front stock trays and several back stock trays are used in conjunction with the transfer assembly's flipping and transporting function to achieve both front and back-side inspection of the circuit boards while also allowing for continuous inspection, improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 This is a structural diagram of Example 1 of the present application;

[0051] Figure 2 This is a structural diagram of Example 2 of the present application;

[0052] Figure 3 This is a schematic diagram of the structure of the workbench in Example 2 of this application;

[0053] Figure 4 This is a structural diagram of the receiving tray and transfer assembly in Example 2 of the present application.

[0054] In the figure: 10, workbench; 11, slide; 12, bracket; 13, discharge port; 20, receiving tray; 21, front material storage tray; 22, back material storage tray; 30, front detection camera; 40, back detection camera; 50, transfer assembly; 51, mounting frame; 52, lead screw; 53, rotating motor; 54, mounting base; 55, positioning base; 551, transfer motor; 56, transfer rod; 60, vacuum suction cup; 61, front suction cup; 62, back suction cup; 70, rotating rod; 71, rotating worm gear; 80, rotating rod; 81, rotating worm gear; 90, drive ring; 91, rack; 110, connecting rod; 120, rotating gear; 130, worm; 140, sliding block; 150, vertical cylinder; 160, horizontal cylinder; 170, moving block; 180, steering motor; 190, transfer suction cup. DETAILED DESCRIPTION

[0055] The following is combined with Figure 1-4 This application is described in further detail.

[0056] Example 1:

[0057] The present application embodiment discloses an intelligent detection device for circuit board surface quality. Figure 1 The intelligent detection equipment for the surface quality of a circuit board includes a workbench 10, a front detection camera 30 and a back detection camera 40. The front detection camera 30 is installed on the workbench 10 by bolts, and the output end of the front detection camera 30 faces downward. The back detection camera 40 is also installed on the workbench 10 by bolts, but the output end of the back detection camera 40 faces upward.

[0058] A slide 11 is fixed on the workbench 10, and the slide 11 is arranged along the connecting line of the front detection camera 30 and the back detection camera 40. A receiving tray 20 is provided on the slide 11, and the circuit board can be placed on the receiving tray 20. The receiving tray 20 can move on the slide 11 along the length direction of the slide 11, wherein the output end of the front detection camera 30 is facing the slide 11, so that the receiving tray 20 can move to the bottom of the front detection camera 30, so as to realize the detection of the front side of the circuit board on the receiving tray 20.

[0059] Reference Figure 1 A transfer assembly 50 is provided on the workbench 10, and the transfer assembly 50 is located between the front detection camera 30 and the back detection camera 40. The transfer assembly 50 includes a mounting frame 51, a screw rod 52, a rotating motor 53 and a mounting seat 54. The mounting frame 51 is fixed on the workbench 10, and the mounting frame 51 is parallel to the slide 11. The screw rod 52 is horizontally inserted into the mounting frame 51, and the end of the screw rod 52 is rotatably connected to the mounting frame 51. The rotating motor 53 is provided at one end of the mounting frame 51, and the output end of the rotating motor 53 is coaxially fixed with one end of the screw rod 52 for driving the screw rod 52 to rotate.

[0060] Reference Figure 1 The mounting seat 54 is sleeved on the screw rod 52, and the mounting seat 54 is threadedly connected to the screw rod 52. The screw rod 52 rotates to drive the mounting seat 54 to move horizontally on the mounting frame 51. A vacuum suction cup 60 is fixed on the mounting seat 54, and the receiving tray 20 and the reverse side detection camera 40 are both located on the moving track of the vacuum suction cup 60.

[0061] The slide 11 is also provided with a screw motor structure to drive the receiving tray 20 to move. The structure is the same and will not be described in detail here.

[0062] When in use, place the circuit board on the receiving tray 20, drive the receiving tray 20 to move on the slide 11, and adjust the position of the receiving tray 20 so that the receiving tray 20 faces the front detection camera 30 to realize the upper surface, i.e. the front, detection of the circuit board on the receiving tray 20. When the front inspection of the circuit board is completed, the receiving tray 20 is moved so that the receiving tray 20 moves out from under the front inspection camera 30, so that the receiving tray 20 is staggered with the front inspection camera 30, and then the rotating motor 53 is started to drive the screw rod 52 to rotate, so that the mounting seat 54 moves on the mounting frame 51 in the length direction of the screw rod 52, thereby driving the vacuum suction cup 60 to move to the top of the receiving tray 20 and suck out the circuit board. At this time, the bottom of the circuit board is unobstructed, and then the rotating motor 53 is driven again to make the screw rod 52 rotate, driving the mounting seat 54 to move in the direction of the reverse inspection camera until the vacuum suction cup 60 moves to directly above the reverse inspection camera. At this time, the back of the circuit board is facing the reverse inspection camera 40, realizing the inspection of the back of the circuit board, and finally realizing the inspection of both sides of the circuit board, which is convenient to operate.

[0063] The implementation principle of the intelligent detection device for the surface quality of a circuit board in the first embodiment of the present application is as follows: when in use, the circuit board is placed on the receiving tray 20, and the front detection camera 30 is facing the receiving tray 20 to detect the upper surface, i.e., the front surface, of the circuit board on the receiving tray 20. When the front surface detection of the circuit board is completed, the transfer component 50 is started to drive the vacuum suction cup 60 to move to the top of the receiving tray 20, and the vacuum suction cup 60 is used to suck the circuit board out of the receiving tray 20, so that the back side of the circuit board is separated from the receiving tray 20 and exposed. Then, the transfer component 50 is used again to make the vacuum suction cup 60 adsorb the circuit board and move it to the back detection camera 40. The back detection camera 40 detects the exposed back side of the circuit board, thereby realizing the detection of both sides of the circuit board, which is convenient to operate.

[0064] Example 2:

[0065] The difference between this embodiment and the first embodiment is that: Figure 2 and Figure 3The receiving tray 20 includes several front material storage trays 21 and several back material storage trays 22. A rotating rod 70 is vertically penetrated in the workbench 10. The rotating rod 70 can rotate around the central axis of the rotating rod 70. Several front material storage trays 21 are radially arranged with the axis of the rotating rod 70 as the center of the circle. Several connecting rods 110 are rotatably connected to the side wall of the rotating rod 70. The connecting rod 110 is horizontally arranged and can rotate on the rotating rod 70. Several connecting rods 110 correspond to the front material storage trays 21 one by one, and one end of the connecting rod 110 away from the rotating rod 70 is fixed to the front material storage tray 21.

[0066] Reference Figure 2 and Figure 3 A rotating rod 80 is vertically provided on the workbench 10, and the rotating rod 80 can rotate around the central axis of the rotating rod 80. Several reverse material storage trays 22 are radially arranged with the axis of the rotating rod 80 as the center of the circle. Several connecting rods 110 are also rotatably connected to the side wall of the rotating rod 80. The connecting rod 110 is horizontally arranged and can rotate on the rotating rod 80. Several connecting rods 110 correspond to the reverse material storage trays 22 one by one, and the end of the connecting rod 110 away from the rotating rod 70 is fixed to the reverse material storage tray 22. The transfer assembly 50 is used to interchange the circuit boards on the front material storage tray 21 and the reverse material storage tray 22.

[0067] The circuit boards are stored below the front inspection camera 30 and placed on the front stocking tray 21. The front side of the circuit boards is inspected using the front inspection camera 30. Similarly, circuit boards are also stored on the back stocking tray 22 below the back inspection camera 40, and the back side of the circuit boards is inspected using the back inspection camera 40. When the inspection is complete, the transfer assembly 50 is activated to flip the inspected circuit boards on the front stocking tray 21 and place them on the back stocking tray 22, with the back side facing up. The inspected circuit boards on the back stocking tray 22 are then placed on the transfer assembly 50. The transfer assembly 50 is then reset, bringing the circuit boards from the back stocking tray 22 back and placing them face up on the front stocking tray 21. At this point, the rotating rod 70 is driven to rotate, causing the transported circuit boards to move under the front inspection camera 30 for front side inspection, while the circuit boards that have already been inspected on the front side are moved to the transfer assembly 50 to prepare for the next transport.

[0068] Reference Figure 2 and Figure 3As the rotating rod 70 rotates, it drives the rotating rod 80 to rotate, causing the circuit boards transferred to the reverse storage tray 22 to move below the reverse inspection camera 40 for reverse inspection. The circuit boards that have already been inspected on the reverse side are moved into the range of the transfer assembly 50 to be ready for the next transfer. The coordinated use of multiple front storage trays 21 and multiple reverse storage trays 22, and the flipping and transporting of the transfer assembly 50, not only achieves front and back inspection of the circuit boards, but also allows for continuous inspection, improving work efficiency.

[0069] Reference Figure 3 and Figure 4 The transfer assembly 50 includes a positioning seat 55 and a transfer rod 56. The positioning seat 55 is fixed on the workbench 10. The positioning seat 55 is located between the front detection camera 30 and the back detection camera 40. A transfer motor 551 is provided on the positioning seat 55. The output end of the transfer motor 551 is coaxially fixed with one end of the transfer rod 56, and is used to drive the transfer rod 56 to rotate with the connection between the transfer rod 56 and the positioning seat 55 as the axis.

[0070] Reference Figure 3 and Figure 4 The vacuum suction cup 60 connected to the transfer assembly 50 includes a front suction cup 61 and a back suction cup 62. The front suction cup 61 is fixed to one side of the transfer rod 56. When the end of the transfer rod 56 away from the positioning seat 55 rotates to the front material storage tray 21, the front suction cup 61 faces downward and corresponds to one of the front material storage trays 21. The back suction cup 62 is fixed to the other side of the transfer rod 56. When the end of the transfer rod 56 away from the positioning seat 55 rotates to the back material storage tray 22, the back suction cup 62 faces downward and corresponds to one of the back material storage trays 22.

[0071] After the front inspection of the circuit board on the front stocking tray 21 is completed, the transfer rod 56 is first swung toward the front stocking tray 21, at which point the back suction cup 62 faces upward. The inspected circuit board on the front stocking tray 21 is placed on the back suction cup 62. The transfer motor 551 is then started, driving the transfer rod 56 to flip upward until the transfer rod 56 rotates 180°, causing the back suction cup 62 to face downward and align with the back stocking tray 22. The circuit board on the back suction cup 62 now falls onto the back stocking tray 22. After the transfer rod 56 flips, the back side of the circuit board that fell onto the back stocking tray 22 faces upward. The rotating rod 70 is driven to rotate, causing the circuit board to move below the front inspection motor, thereby achieving double-sided inspection of the circuit board. After the rotation, the front stocking tray 21 located in the path of the transfer rod 56 is empty, allowing the next placement of the circuit board on the back suction cup 62.

[0072] Reference Figure 3 and Figure 4At this time, the front suction cup 61 is facing upwards, and then the circuit board that has been inspected on the reverse storage tray 22 is placed on the front suction cup 61. The transfer motor 551 is used to drive the transfer rod 56 to reverse until the front suction cup 61 is facing downwards towards the front storage tray 21. At this time, the circuit board on the front suction cup 61 falls on the front storage tray 21. After the transfer rod 56 is turned over, the circuit board that fell on the front storage tray 21 faces upwards. The rotating rod 80 is driven to rotate so that the circuit board moves to the bottom of the reverse detection motor, and the detection of both sides of the circuit board can be realized. After the rotation, the reverse storage tray 22 located in the path of the transfer rod 56 is empty, so that the circuit board on the front suction cup 61 can be placed next time. The detection work is continuously carried out, which improves the work efficiency.

[0073] During this process, the side with the circuit board placed upward is the windward side, which is pressed against the transfer rod 56 by the wind force. When the circuit board is placed on the transfer rod 56, the transfer rod 56 rotates and the circuit board is not likely to slip, thereby increasing the stability of the circuit board transfer process.

[0074] Reference Figure 2 and Figure 3 In order to realize automatic unloading of circuit boards that have been inspected on both sides of the receiving tray 20, two driving rings 90 are fixed on the workbench 10. The two driving rings 90 are coaxially sleeved on the rotating rod 70 and the rotating rod 80 respectively. A rotating gear 120 is sleeved on the connecting rod 110. The rotating gear 120 is fixed to the connecting rod 110. A rack 91 is fixed on the driving ring 90. A discharge port 13 is opened on the workbench 10. The rack 91 is located at the discharge port 13. The rotating gear 120 can engage with the rack 91.

[0075] When the rotating rod 70 or the rotating rod 80 rotates, the connecting rod 110 drives the rotating gear 120 to move around the driving ring 90. When one of the rotating gears 120 moves to engage with the rack 91, the rotating gear 120 slides on the rack 91, thereby causing the rotating gear 120 to rotate, driving the connecting rod 110 to rotate, causing the front storage tray 21 or the back storage tray 22 to flip over in the corresponding discharge port 13, so that the circuit boards that have been inspected on both sides above fall into the feed port 13, realizing automatic discharge and convenient operation.

[0076] Reference Figure 3 and Figure 4To achieve synchronous movement of the front material storage tray 21 and the rear material storage tray 22, a rotating worm gear 71 is coaxially sleeved on the rotating rod 70 and fixed to the rotating rod 70. A rotating worm gear 81 is coaxially sleeved on the rotating rod 80 and fixed to the rotating rod 80. A worm 130 is inserted into the workbench 10, and the end of the worm 130 is rotatably connected to the workbench 10. The worm 130 meshes with the rotating worm gear 71 and the rotating worm gear 81. When the worm 130 is driven to rotate, the rotating worm gear 71 and the rotating worm gear 81 rotate simultaneously, achieving synchronous movement of the plurality of front material storage trays 21 and the plurality of rear material storage trays 22, and achieving better coordination.

[0077] Reference Figure 2 and Figure 3 To improve the accuracy of mounting the circuit boards on the front suction cups 61 and the back suction cups 62, a bracket 12 is fixed to the workbench 10. The bracket 12 is arranged along the line connecting the rotating rod 70 and the rotating rod 80. A sliding block 140 is slidably connected to the bracket 12. The sliding block 140 can move between the front inspection camera 30 and the back inspection camera 40. A screw motor structure is also provided within the bracket 12 to drive the stable movement of the sliding block 140. A vertical cylinder 150 is fixedly mounted on the sliding block 140. The output end of the vertical cylinder 150 is connected to the horizontal cylinder 160. The output end of the horizontal cylinder 160 is fixed to the moving block 170. A steering motor 180 is bolted to the moving block 170. The output end of the steering motor 180 faces downward and is mounted with a transfer suction cup 190. The transfer suction cup 190 can absorb the circuit boards and move them between adjacent front storage trays 21 or adjacent back storage trays 22.

[0078] The sliding block 140 is driven to move on the support frame, allowing the transfer suction cup 190 to move to the front or rear storage tray. The vertical cylinder 150 adjusts its height to remove the circuit boards from the front or rear storage tray, where only one side has been inspected. The horizontal cylinder 160 then moves the transfer cup 190 to the transfer rod 56, where the circuit boards are transported to the transfer rod 56. This highly mechanized system improves the precision of the transfer. The steering motor 180 allows the transfer cup 190 to adjust its angle to transport circuit boards from the front or rear storage tray at different locations onto the transfer rod 56.

[0079] The implementation principle of the intelligent circuit board surface quality detection device of the second embodiment of the present application is as follows: the circuit boards are stored below the front inspection camera 30 and placed on the front storage tray 21. The front side of the circuit boards is inspected using the front inspection camera 30. Similarly, the circuit boards are also stored on the back storage tray 22 below the back inspection camera 40, and the back side of the circuit boards is inspected using the back inspection camera 40. After the inspection is completed, the transfer assembly 50 is activated to flip the inspected circuit boards on the front storage tray 21 and place them on the back storage tray 22 so that the back side of the circuit boards faces upward. Then, the inspected circuit boards on the back storage tray 22 are placed on the transfer assembly 50. The transfer assembly 50 is then reset, thereby bringing the circuit boards on the back storage tray 22 back and placing them on the front storage tray 21 with the front side facing upward. At this time, the rotating rod 70 is driven to rotate, so that the transported circuit boards are moved to the front inspection camera 30 for front inspection, while the circuit boards that have already been inspected on the front side are moved to the transfer assembly 50 to prepare for the next transport.

[0080] As the rotating rod 70 rotates, it drives the rotating rod 80 to rotate, causing the circuit boards transferred to the reverse storage tray 22 to move below the reverse inspection camera 40 for reverse inspection. The circuit boards that have already been inspected on the reverse side are moved into the range of the transfer assembly 50 to be ready for the next transfer. The coordinated use of multiple front storage trays 21 and multiple reverse storage trays 22, and the flipping and transporting of the transfer assembly 50, not only achieves front and back inspection of the circuit boards, but also allows for continuous inspection, thereby improving work efficiency.

[0081] The present application also provides a method for detecting circuit board surface quality using an intelligent detection device, comprising the following steps:

[0082] S1. Place the circuit board on the receiving tray 20 and make the front inspection camera 30 face the receiving tray 20 to inspect the front of the circuit board;

[0083] S2. Start the transfer assembly 50 to move the vacuum suction cup 60 to the top of the receiving tray 20 and use the vacuum suction cup 60 to suck the circuit board until the back of the circuit board is separated from the receiving tray 20.

[0084] S3. Reusing the transfer assembly 50, the vacuum suction cup 60 moves the circuit board to the back side inspection camera 40 with suction. The back side inspection camera 40 inspects the exposed back side of the circuit board, thereby inspecting both sides of the circuit board.

[0085] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An intelligent detection device for circuit board surface quality, characterized in that: include: Workbench (10); a receiving tray (20), arranged on the workbench (10); A front detection camera (30) is provided on the workbench (10), and the front detection camera (30) is used to detect the front of the circuit board on the docking tray (20); a back side inspection camera (40), arranged on the workbench (10), for inspecting the back side of the circuit board; A transfer assembly (50) is provided on the workbench (10), and a vacuum suction cup (60) is provided on the transfer assembly (50), and the vacuum suction cup (60) is used to suck the circuit board; The receiving tray (20) comprises: A plurality of front material storage trays (21) are arranged on the workbench (10), a rotating rod (70) is vertically provided in the workbench (10), the rotating rod (70) can rotate with the central axis of the rotating rod (70) as the axis, and the plurality of front material storage trays (21) are radially arranged with the axis of the rotating rod (70) as the center of the circle, the front material storage trays (21) are connected to the rotating rod (70), and the output end of the front detection camera (30) is downward and aligned with one of the front material storage trays (21); A plurality of reverse material storage trays (22) are arranged on the workbench (10); a rotating rod (80) is vertically passed through the workbench (10); the rotating rod (80) can rotate with the central axis of the rotating rod (80) as an axis; the plurality of reverse material storage trays (22) are radially arranged with the axis of the rotating rod (80) as the center of a circle; the reverse material storage trays (22) are connected to the rotating rod (80); the output end of the reverse detection camera (40) faces downward and is aligned with one of the reverse material storage trays (22); and the transfer assembly (50) is used for exchanging circuit boards on the front material storage tray (21) and the reverse material storage tray (22); The workbench (10) is provided with a bracket (12), a sliding block (140) is slidably connected to the bracket (12), and the sliding block (140) can move between the front detection camera (30) and the back detection camera (40), and the sliding block (140) is provided with a vertical cylinder (150), the output end of the vertical cylinder (150) is connected to the horizontal cylinder (160), and the output end of the horizontal cylinder (160) is provided with a transfer sucker (190), and the transfer sucker (190) can absorb the circuit board and move between adjacent front storage trays (21) or adjacent back storage trays (22); A moving block (170) is fixed to the output end of the transverse cylinder (160), a steering motor (180) is provided on the moving block (170), the transfer suction cup (190) is fixed to the output end of the steering motor (180), and the steering motor (180) is used to drive the transfer suction cup (190) to rotate; The transfer assembly (50) comprises: A positioning seat (55) is fixed on the workbench (10), the positioning seat (55) is located between the front detection camera (30) and the back detection camera (40), and a transfer motor (551) is provided on the positioning seat (55); A transfer rod (56), one end of which is hinged on the positioning seat (55), and an output end of the transfer motor (551) is coaxially fixed with one end of the transfer rod (56) and is used to drive the transfer rod (56) to rotate around the connection between the transfer rod (56) and the positioning seat (55); The vacuum suction cup (60) comprises: A front suction cup (61) is fixed on one side of the transfer rod (56). When one end of the transfer rod (56) is away from the positioning seat (55) and rotates to the front material storage tray (21), the front suction cup (61) faces downward and corresponds to one of the front material storage trays (21). The reverse suction cup (62) is fixed on the other side of the transfer rod (56). When the transfer rod (56) is moved away from one end of the positioning seat (55) and rotated to the reverse material storage tray (22), the reverse suction cup (62) faces downward and corresponds to one of the reverse material storage trays (22).

2. The intelligent detection device for circuit board surface quality according to claim 1, characterized in that: The rotating rod (70) and the rotating rod (80) are both sleeved with a driving ring (90), and the driving ring (90) is fixed on the workbench (10). The front material storage tray (21) and the back material storage tray (22) are both fixed with a connecting rod (110). The connecting rod (110) on the front material storage tray (21) is rotatably connected to the rotating rod (70), and the connecting rod (110) on the back material storage tray (22) is rotatably connected to the rotating rod (80). The connecting rod (110) is sleeved with a rotating gear (120), and the rotating gear (120) is fixed to the connecting rod (110). A rack (91) is fixed on the driving ring (90). A discharge port (13) is provided on the workbench (10), and the rack (91) is located at the discharge port (13). The rotating gear (120) can mesh with the rack (91).

3. The intelligent detection device for circuit board surface quality according to claim 2, characterized in that: A rotating worm gear (71) is coaxially sleeved on the rotating rod (70), and the rotating worm gear (71) is fixed to the rotating rod (70). A rotating worm gear (81) is coaxially sleeved on the rotating rod (80), and the rotating worm gear (81) is fixed to the rotating rod (80). A worm (130) is inserted into the workbench (10), and the end of the worm gear (130) is rotatably connected to the workbench (10). The worm gear (130) is meshed with the rotating worm gear (71) and the rotating worm gear (81).

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