A smartphone appearance detection system

Abstract

The application discloses a kind of appearance detection systems of smart phone, including detection box, inside being equipped with cylinder, the output end of the suction cup of the cylinder is equipped with suction mobile phone, transmission part is equipped in the detection box, its surface is equipped with two first moving blocks, two second moving blocks, the bottom of the first moving block, second moving block is equipped with the detection camera of obliquely arranged, the transmission part moves and drives first moving block, second moving block, detection camera moves, four the detection camera moves and gathers the image of mobile phone middle frame surface.The application is equipped with the detection camera of multi-angle oblique, cooperate with the multi-directional oblique adjustment and mobile scanning imaging of mobile phone, can comprehensively capture the flaw feature of mobile phone middle frame surface, effectively eliminate detection blind area, without manual participation core detection process, greatly improve detection efficiency, reduce labor cost.

Description

Technical Field

[0001] This invention relates to the field of mobile phone appearance inspection technology, and in particular to a smartphone appearance inspection system. Background Technology

[0002] With the rapid development of the smartphone industry, consumers have increasingly stringent requirements for the appearance of mobile phones. As a core component of the appearance, the surface smoothness, scratches, dents, color differences, and other defects of the mobile phone frame directly affect product quality and market competitiveness. Currently, the inspection of smartphone frames mostly relies on manual visual inspection, which has problems such as low inspection efficiency, high missed detection rate, and inconsistent inspection standards. Especially for the curved frame of curved screen phones, it is difficult for manual inspection to fully capture the defect features from different angles.

[0003] Currently, manual inspection is still the most common method used in the mobile phone frame inspection field. Specifically, inspectors need to visually inspect each mobile phone frame to determine if it has the aforementioned defects. However, this traditional manual inspection method has many insurmountable drawbacks, severely restricting production efficiency and inspection quality.

[0004] First, manual inspection is extremely inefficient. With the continuous increase in mobile phone production capacity, the speed of manual inspection can no longer keep up with the pace requirements of automated production lines, resulting in a large backlog of products awaiting inspection and significantly increasing production cycles and time costs. Second, manual inspection has a high rate of missed defects. Mobile phone frames are often slender, making some defects (such as minor scratches and tiny bumps) extremely difficult to detect. Furthermore, inspectors are prone to visual fatigue after long hours of work, making it difficult to maintain consistent inspection accuracy. This leads to some defective products entering the market, damaging brand reputation.

[0005] Therefore, this application proposes a smartphone appearance inspection system. Summary of the Invention

[0006] The purpose of this invention is to solve the above-mentioned technical problems by proposing a smartphone appearance inspection system.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A smartphone appearance inspection system includes an inspection box with a cylinder inside. The output end of the cylinder is equipped with a suction cup for adsorbing the phone. The inspection box has a transmission unit with two first moving blocks and two second moving blocks on its surface. The bottom of each of the first and second moving blocks is equipped with an inclined inspection camera. The movement of the transmission unit drives the first moving blocks, the second moving blocks, and the inspection cameras to move. The four inspection cameras move to collect images of the surface of the phone's frame.

[0008] Preferably, the second movable block is provided with a through mounting hole, the transmission part passes through the mounting hole, and a plurality of balls are rotatably connected in the mounting hole. The balls abut against the outer surface of the transmission part and exert pressure on the transmission part.

[0009] Preferably, it also includes a drive unit that can move synchronously with the transmission unit. The drive unit includes a compression sleeve, which has an installation cavity with the opening facing upward. The installation cavity contains a magnetic block and an electromagnet. A spring is provided between the magnetic block and the electromagnet. When the electromagnet is energized, a repulsive force is generated between the magnetic block and the electromagnet, driving the compression sleeve to move downward and abut against the mobile phone. The compression sleeve rotates about the suction cup as an axis, causing the mobile phone to tilt.

[0010] Preferably, a connecting rod is fixed to the output end of the cylinder, and a mounting plate is fixed to the bottom of the connecting rod. A rotatable sleeve is provided through the mounting plate at the top and bottom, and a rotatable vertical tube is provided through the sleeve. The vertical tube is connected to the suction cup.

[0011] Preferably, the bottom of the mounting plate is rotatably connected to four short shafts, which are arranged in a rectangular shape. A transmission wheel is mounted on the bottom of each short shaft, and the transmission part is arranged around the outside of the four transmission wheels.

[0012] Preferably, a rotating arm is fixed to the outer wall of the vertical tube, a connecting block is fixed to the bottom of the rotating arm, the connecting block is fixedly connected to the upper end of the electromagnet, and a limiting ring is provided on the outside of the connecting block, the limiting ring being fixed to the inner wall of the extrusion sleeve.

[0013] Preferably, it further includes a limiting frame, which is fixed to the bottom of the mounting plate. The outer wall of the limiting frame is provided with two first guide grooves and two second guide grooves. The two first guide grooves and two second guide grooves are staggered on the outer wall of the limiting frame. The first moving block slides in the first guide groove and the second moving block slides in the second guide groove.

[0014] Preferably, two sets of limiting parts are fixed on the limiting frame, the limiting parts are arranged opposite to the second guide groove, and the limiting parts include limiting blocks fixed on the limiting frame, with the two limiting blocks located on both sides of the second moving block.

[0015] Preferably, a dual-axis motor is installed on the upper end of the mounting plate, and a first power shaft is fixed to the output end of the dual-axis motor. Synchronous pulleys are installed on both the first power shaft and the sleeve, and the two synchronous pulleys are connected by a transmission belt. The other output end of the dual-axis motor is fixed with a second power shaft, which is connected to the short shaft.

[0016] Preferably, the detection box has a through groove, and a conveyor belt runs through the through groove, with the conveyor belt located below the suction cup.

[0017] Compared with the prior art, the beneficial effects of this invention are as follows: 1. This invention, by setting up a multi-angle tilting detection camera, combined with the multi-directional tilting posture adjustment of the mobile phone and the moving scanning imaging of the detection camera, can comprehensively capture the defect features on the surface of the mobile phone frame, effectively eliminating detection blind spots. It is especially suitable for the detection of curved mid-frames of curved screen mobile phones, and the detection accuracy is significantly improved.

[0018] 2. By using the differentiated length design of the first guide groove and the second guide groove, combined with the linkage structure of the transmission part and the moving block, adaptive detection of mobile phone frames of different length and width can be achieved without frequent adjustment of equipment parameters, making operation convenient and efficient.

[0019] 3. The structural design of the guide components, limit frame, and limit part ensures the motion accuracy of the device and avoids damage from component collisions. At the same time, by using PTFE film at the contact points, sliding friction is reduced, the smoothness of component movement is improved, and the service life of the equipment is extended.

[0020] 4. It can realize automated mobile phone grasping, posture adjustment, image acquisition, data analysis and result display. The conveyor belt design in the embodiment can be adapted to assembly line production, eliminating the need for manual participation in the core inspection process, greatly improving inspection efficiency and reducing labor costs.

[0021] In summary, by setting up a multi-angle tilting detection camera, combined with multi-directional tilt adjustment and moving scanning imaging of the mobile phone, this invention can comprehensively capture the defect features on the surface of the mobile phone frame, effectively eliminate detection blind spots, eliminate the need for manual intervention in the core detection process, significantly improve detection efficiency, and reduce labor costs. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a smartphone appearance inspection system proposed in Embodiment 1 of the present invention; Figure 2 This is a front view of a smartphone appearance inspection system proposed in Embodiment 1 of the present invention; Figure 3 This is a schematic diagram of the internal structure of the inspection box in a smartphone appearance inspection system according to Embodiment 1 of the present invention; Figure 4 This is a schematic diagram of the structure of the bracket and cylinder in a smartphone appearance inspection system according to Embodiment 1 of the present invention; Figure 5 This is a front view of the bracket and cylinder in a smartphone appearance inspection system according to Embodiment 1 of the present invention; Figure 6 This is a schematic diagram of the upper synchronous wheel on the mounting plate in a smartphone appearance inspection system according to Embodiment 1 of the present invention; Figure 7 This is a schematic diagram of the structure of the limiting frame in a smartphone appearance inspection system according to Embodiment 1 of the present invention; Figure 8 This is a schematic diagram of the transmission part and the detection camera in a smartphone appearance inspection system according to Embodiment 1 of the present invention; Figure 9 This refers to the termination or initial state after the first moving block and the second moving block have been detected in a smartphone appearance inspection system according to Embodiment 1 of the present invention. Figure 10 This is a side view schematic diagram of the second moving block in a smartphone appearance inspection system according to Embodiment 1 of the present invention; Figure 11 This is a schematic diagram of the internal structure of the extrusion sleeve in a smartphone appearance inspection system according to Embodiment 1 of the present invention; Figure 12 This is a schematic diagram of the structure of a smartphone appearance inspection system proposed in Embodiment 2 of the present invention.

[0023] In the diagram: 1. Detection box, 2. Switch door, 3. Display, 4. Placement platform, 5. Mounting plate, 6. Bracket, 7. Cylinder, 8. Guide sleeve, 9. Guide rod, 10. Sleeve, 11. Connecting rod, 12. Transmission belt, 13. Suction cup, 14. Dual-axis motor, 15. First power shaft, 16. Synchronous pulley, 17. Vertical tube, 18. Transmission wheel, 19. Short shaft, 20. Transmission unit, 21. Detection camera, 22. Limiting frame, 23. First guide groove, 24. Second guide groove, 25. Limiting block, 26. First moving block, 27. Second moving block, 28. Second power shaft, 29. Rotating arm, 30. Extrusion sleeve, 31. Mounting hole, 32. Ball bearing, 33. Electromagnet, 34. Connecting block, 35. Limiting ring, 36. Spring, 37. Magnetic block, 38. Through groove, 39. Conveyor belt. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0025] like Figures 1-11 As shown, this invention discloses a smartphone appearance inspection system, including an inspection box 1 and a control module (not shown in the figure). The inspection system realizes comprehensive, non-destructive, and automated appearance inspection of the mid-frame of smartphones, and is particularly suitable for detecting defects such as scratches, dents, and color differences in aluminum alloy, titanium alloy mid-frames and mid-frames for curved screens.

[0026] Specifically, the inspection box 1 is a closed cavity structure, which integrates an illumination component (not labeled in the figure) to provide the inspection light source. This illumination component uses a ring array of LED light sources, and the light intensity and angle can be adjusted according to the inspection requirements to ensure uniform lighting in the inspection area and provide good conditions for image acquisition. A display 3 is fixedly installed on the upper surface of the inspection box 1. The display 3 is connected to the control module and can display the mobile phone appearance images acquired during the inspection process in real time, and highlight the defective parts to facilitate the staff to quickly locate the defective parts. On the other hand, it can simultaneously display production data such as the number of mobile phones inspected, the number of qualified phones, the number of unqualified phones, and the inspection pass rate, so as to realize the visual management of the inspection process.

[0027] To facilitate workpiece handling and ensure the stability of the testing environment, the front of the testing chamber 1 is designed with an open front. A hinged door 2 is connected to this opening. The door 2 is made of light-shielding and dust-proof material, and its edges are sealed with a rubber strip. Closing the door 2 effectively isolates external light sources, preventing natural light or other light sources in the workshop from affecting the accuracy of image acquisition. It also prevents workshop dust from entering the testing chamber 1, avoiding dust adhering to the surface of the mobile phone or the tested components and causing testing errors, thus ensuring the cleanliness of the testing environment.

[0028] The bracket 6 is bolted to the inside of the testing box 1. The cylinder body of the cylinder 7 is fixed to the bracket 6 via a flange, with the output end of the cylinder 7 facing downwards and fixedly connected to the upper end of the connecting rod 11. To ensure the stability of the connecting rod 11 during the cylinder 7's operation, two symmetrically arranged guide sleeves 8 are installed through the bracket 6. Guide rods 9 are slidably connected within the guide sleeves 8 to form a guide assembly. The lower ends of the guide rods 9 are vertically fixed to the upper surface of the mounting plate 5. When the cylinder 7 extends and retracts, driving the connecting rod 11 to move up and down, the guide rods 9 slide synchronously along the guide sleeves 8. Through the guiding and limiting function of the guide assembly, the mounting plate 5 can be effectively prevented from shifting or shaking during movement, ensuring the motion accuracy of the mounting plate 5.

[0029] Mounting plate 5 is a horizontally positioned rectangular plate structure with sleeves 10 running through it from top to bottom. The sleeves 10 are rotatably connected to mounting plate 5 via bearings. A vertical tube 17 runs through the sleeves 10, coaxially arranged with the sleeves 10 and rotatable relative to them. The lower end of the vertical tube 17 is fixedly connected to suction cup 13, and the upper end is connected to an external vacuum generator or negative pressure device (not shown in the figure) via a flexible hose. A solenoid valve is installed on the flexible hose to control the on / off state of the negative pressure.

[0030] When a mobile phone needs to be grasped, the control module controls the solenoid valve to open, and the vacuum generator operates to create negative pressure inside the vertical tube 17, which in turn attracts the mobile phone through the suction cup 13. After the inspection is completed, the solenoid valve closes, the negative pressure is released, and the suction cup 13 releases the mobile phone. A placement platform 4 is fixedly installed on the bottom wall of the inspection box 1. The upper surface of the placement platform 4 is provided with a flexible anti-slip pad to temporarily store the mobile phone to be inspected, preventing the mobile phone from sliding or being scratched when placed, and at the same time providing a stable support reference for the gripping of the suction cup 13.

[0031] It also includes a transmission unit 20, a limiting frame 22, and a detection camera 21. The transmission unit 20 uses a circular rubber strip, which has good elasticity and wear resistance. The bottom of the mounting plate 5 is rotatably connected to four short shafts 19 via bearings. The four short shafts 19 are rectangularly distributed to form a rectangular transmission track. The bottom of each short shaft 19 is fixedly mounted with a transmission wheel 18. The transmission unit 20 is wound around the outside of the four transmission wheels 18 to form a closed transmission belt structure.

[0032] Two first moving blocks 26 and two second moving blocks 27 slide on the limiting frame 22, all of which are connected to the transmission part 20 and can move with the movement of the transmission part 20. The specific connection structure is as follows: a mounting hole 31 is provided through the second moving block 27, through which the transmission part 20 passes. Multiple evenly distributed balls 32 are embedded in the inner wall of the mounting hole 31. The balls 32 abut against the outer surface of the transmission part 20 and generate a certain pre-pressure. Through the friction between the balls 32 and the transmission part 20, the second moving block 27 can be relatively fixed on the transmission part 20; that is, when the transmission part 20 moves, it can drive the second moving block 27 to move synchronously. When the second moving block 27 moves to the end of its stroke and is limited, the static friction between the balls 32 and the transmission part 20 is converted into rolling friction, and the transmission part 20 can drive the balls 32 to rotate, thereby realizing the relative sliding between the transmission part 20 and the second moving block 27, preventing damage to the transmission part 20 due to obstruction by the moving blocks. A connecting hole is provided through the first moving block 26. The transmission part 20 passes through the connecting hole and is fixedly connected to the first moving block 26 by bonding or pressing, so as to ensure that the second moving block 27 can move synchronously when the transmission part 20 moves.

[0033] To achieve multi-angle posture adjustment during mobile phone testing, this invention also includes a drive unit that moves synchronously with the transmission unit 20. The drive unit includes a compression sleeve 30, a magnetic block 37, an electromagnet 33, and a spring 36. The compression sleeve 30 has an upward-facing mounting cavity, and both the magnetic block 37 and the electromagnet 33 are located within the mounting cavity, with the electromagnet 33 positioned above the magnetic block 37. A rotating arm 29 is fixed to the outer wall of the vertical tube 17, and a connecting block 34 is fixed to the bottom of the rotating arm 29. The connecting block 34 is fixedly connected to the upper end face of the electromagnet 33.

[0034] A limiting ring 35 is sleeved on the outside of the connecting block 34. The limiting ring 35 is fixed to the inner wall of the extrusion sleeve 30 by a threaded connection. The inner diameter of the limiting ring 35 is smaller than the outer diameter of the electromagnet 33. Through the limiting effect of the limiting ring 35, the electromagnet 33 can be effectively prevented from detaching from the mounting cavity of the extrusion sleeve 30 during movement. The magnetic blocks 37 and electromagnet 33 have the same magnetic poles on opposite sides. A spring 36 is provided between the two, and the two ends of the spring 36 abut against the magnetic blocks 37 and the electromagnet 33, respectively. When the electromagnet 33 is energized, a repulsive force is generated between it and the magnetic blocks 37. This repulsive force overcomes the elastic force of the spring 36 and drives the extrusion sleeve 30 to move downward and abut against the mobile phone. At the same time, the extrusion sleeve 30 rotates around the suction cup 13 as the axis, causing the mobile phone to tilt in multiple directions. To prevent damage when the extrusion sleeve 30 comes into contact with the mobile phone, a PTFE film is applied to the outside of the extrusion sleeve 30. The low coefficient of friction of the PTFE film can reduce the friction between the extrusion sleeve 30 and the mobile phone and prevent scratches on the surface of the mobile phone.

[0035] When the electromagnet 33 is de-energized, the compression sleeve 30 can be reset under the action of the spring 36.

[0036] To ensure the stability of the movement of the first moving block 26 and the second moving block 27, the limiting frame 22 of this invention is fixed to the bottom of the mounting plate 5 by bolts. Its outer wall has two first guide grooves 23 and two second guide grooves 24. The two first guide grooves 23 are symmetrically arranged along the length direction of the limiting frame 22, and the two second guide grooves 24 are symmetrically arranged along the width direction of the limiting frame 22, with the first guide grooves 23 and second guide grooves 24 staggered. The first moving block 26 is slidably connected within the first guide groove 23, and the second moving block 27 is slidably connected within the second guide groove 24. The limiting effect of the guide grooves effectively prevents the moving blocks from shifting during movement.

[0037] To reduce sliding friction, the inner walls of both the first guide groove 23 and the second guide groove 24 are fixed with PTFE films, and the ends of both the first moving block 26 and the second moving block 27 are coated with PTFE films. During sliding, the PTFE films of both sides abut against each other, which can significantly reduce sliding resistance and ensure smooth sliding of the moving blocks. Both the first guide groove 23 and the second guide groove 24 adopt dovetail or T-slot structures, and the ends of the corresponding first moving block 26 and the second moving block 27 are set as matching dovetail blocks or T-blocks. This structural design can achieve a stable connection between the moving blocks and the guide grooves, preventing the moving blocks from detaching from the guide grooves during sliding. In addition, the length of the first guide groove 23 is greater than the length of the second guide groove 24, where the first guide groove 23 corresponds to the detection stroke in the length direction of the mobile phone, and the second guide groove 24 corresponds to the detection stroke in the width direction of the mobile phone, so as to meet the detection requirements of mobile phones of different sizes.

[0038] Two sets of limiting parts are fixed on the limiting frame 22. The two sets of limiting parts are respectively arranged opposite to the two second guide grooves 24 to limit the movement stroke of the second moving block 27. Each set of limiting parts includes two limiting blocks 25, which are fixed to the limiting frame 22 by bolts and located on both sides of the second moving block 27. Since the length of the first guide groove 23 is greater than the length of the second guide groove 24, when the second moving block 27 moves to the end of its stroke along the second guide groove 24, the first moving block 26 is still within the movement stroke of the first guide groove 23. By blocking and limiting the second moving block 27 by the limiting blocks 25, the second moving block 27 can be prevented from continuing to move to the transmission wheel 18, preventing it from colliding with the transmission wheel 18 and causing damage to the transmission part 20, thus ensuring the operational stability of the transmission wheel 18 and the transmission part 20.

[0039] To power the sleeve 10 and the transmission wheel 18, a dual-axis motor 14 is mounted on the upper end of the mounting plate 5. The dual-axis motor 14 is fixed to the mounting plate 5 via a motor mount, and its two output ends are respectively fixed with a first power shaft 15 and a second power shaft 28. Synchronous pulleys 16 are fixedly mounted on both the first power shaft 15 and the sleeve 10. The two synchronous pulleys 16 are connected by a transmission belt 12. When the dual-axis motor 14 is working, the first power shaft 15 drives the sleeve 10 to rotate via the synchronous pulleys 16 and the transmission belt 12. The second power shaft 28 is connected to one of the short shafts 19 via a coupling. When the dual-axis motor 14 is working, the second power shaft 28 drives the short shaft 19 to rotate, which in turn drives the transmission wheel 18 to rotate. Through the coordinated action of the four transmission wheels 18, the transmission unit 20 is driven to move cyclically.

[0040] Both the bottom of the first moving block 26 and the second moving block 27 are equipped with inspection cameras 21 at an angle. The inspection cameras 21 are industrial high-definition cameras with their lenses facing the phone's mid-frame. The tilt angle of the inspection cameras 21 relative to the phone's mid-frame ranges from 30° to 60°, ensuring that the inspection cameras 21 can comprehensively capture the surface defects of the phone's mid-frame. When the transmission unit 20 moves, it drives the first moving block 26, the second moving block 27, and the inspection cameras 21 to move synchronously. The four inspection cameras 21 respectively perform moving scan imaging on the four sides of the phone's mid-frame, and the collected image data is transmitted to the control module in real time for processing and analysis.

[0041] The specific testing process for the aluminum alloy mid-frame of mobile phones according to this invention is as follows: Staff opened the switch door 2 at the front of the testing box 1, placed the mobile phone to be tested steadily on the flexible anti-slip mat on the placement platform 4, ensuring that the mobile phone was placed upright, and then closed the switch door 2, and the testing system entered standby mode.

[0042] The control module issues a command to start cylinder 7. The piston rod of cylinder 7 extends, driving the connecting rod 11 and mounting plate 5 to move down synchronously. Under the guidance of the guide rod 9 and guide sleeve 8, mounting plate 5 moves down smoothly, thereby driving the vertical tube 17, sleeve 10 and suction cup 13 to move down synchronously. When suction cup 13 moves down to abut against the center of the upper surface of the mobile phone, the control module controls the vacuum generator to start and opens the solenoid valve at the same time, so that negative pressure is generated at suction cup 13 and the mobile phone is adsorbed and fixed. After adsorption is completed, the piston rod of cylinder 7 retracts, driving mounting plate 5, suction cup 13 and adsorbed mobile phone to move up synchronously until the mobile phone is suspended and detached from the placement platform 4, completing the mobile phone grasping action.

[0043] The control module starts the dual-axis motor 14. The first power shaft 15 of the dual-axis motor 14 drives the synchronous wheel 16 on it to rotate. Through the transmission belt 12, the sleeve 10 rotates synchronously. The rotation of the sleeve 10 drives the rotating arm 29, connecting block 34 and pressing sleeve 30 on the outer wall of the vertical tube 17 to rotate synchronously. At the same time, the control module controls the electromagnet 33 to be energized. The electromagnet 33 and the magnetic block 37 generate a repulsive force. This repulsive force overcomes the elastic force of the spring 36 and drives the pressing sleeve 30 to move down until the pressing sleeve 30 abuts against the upper surface of the mobile phone. Under the action of the repulsive force, the mobile phone is tilted at a small angle with the suction cup 13 as the axis. At this time, the suction cup 13 undergoes adaptive deformation. As the rotating arm 29 continues to rotate, the pressing sleeve 30 drives the mobile phone to tilt in multiple directions, so that each part of the mobile phone frame can present different detection angles, laying the foundation for subsequent comprehensive detection.

[0044] The second power shaft 28 of the dual-axis motor 14 drives the short shaft 19 to rotate, and the short shaft 19 drives the transmission wheel 18 to rotate. Under the coordinated action of the four transmission wheels 18, the transmission part 20 moves cyclically along a rectangular trajectory. The movement of the transmission part 20 drives the two first moving blocks 26 and two second moving blocks 27 connected to it to move synchronously. Under the limiting action of the first guide groove 23 and the second guide groove 24 of the limiting frame 22, the first moving block 26 moves along the length direction of the mobile phone, and the second moving block 27 moves along the width direction of the mobile phone. During the movement of the first moving block 26 and the second moving block 27, the detection camera 21 at its bottom moves synchronously to perform omnidirectional moving scanning imaging of the four sides of the mobile phone frame. The collected image data is transmitted to the control module (integrated in the display 3) in real time.

[0045] When the second moving block 27 moves to the end of its stroke along the second guide groove 24, the limiting blocks 25 on both sides of it block and limit it to prevent the second moving block 27 from continuing to move to the transmission wheel 18 and causing damage to the transmission part 20. At this time, the transmission part 20 continues to move. Since the second moving block 27 is limited and fixed, the static friction between the transmission part 20 and the ball 32 in the mounting hole 31 of the second moving block 27 is converted into rolling friction. The transmission part 20 drives the ball 32 to rotate and move relative to the second moving block 27. At the same time, the first moving block 26 continues to move along the first guide groove 23 under the drive of the transmission part 20 until the full scanning imaging of the length direction of the mobile phone is completed.

[0046] The control module processes and analyzes the collected image data, and uses image recognition algorithms to detect whether there are scratches, dents, color differences, or other defects on the surface of the phone's frame. If the inspection is qualified, the display 3 shows "Inspection Qualified" and updates the inspection quantity statistics. If the inspection is unqualified, the display 3 shows "Inspection Unqualified" and highlights the defective parts to facilitate quick location by staff and simultaneously updates the unqualified quantity statistics.

[0047] After the test is completed, the control module de-energizes the electromagnet 33, the repulsive force between the electromagnet 33 and the magnetic block 37 disappears, and the compression sleeve 30 resets and moves upward under the elastic force of the spring 36; at the same time, the vacuum generator is turned off, the solenoid valve is disconnected, the negative pressure at the suction cup 13 is released, and the mobile phone is released; the piston rod of the cylinder 7 extends, driving the mounting plate 5 and the suction cup 13 to move downward, placing the mobile phone back on the placement table 4; the staff opens the switch door 2, takes out the mobile phone that has been tested, puts in the next mobile phone to be tested, and repeats the above testing process. Example

[0048] Reference Figure 12 The difference between this embodiment and Embodiment 1 is that, to further enhance the automation level of the testing system and adapt to the needs of assembly line production, this embodiment features a through groove 38 running through the testing box 1. A conveyor belt 39 runs through the through groove 38, located directly below the suction cup 13, with its conveying direction aligned with the opening direction of the testing box 1. The conveyor belt 39 connects to an external assembly line conveyor system. The mobile phone to be tested is conveyed via the conveyor belt 39 to the testing station inside the testing box 1 (directly below the suction cup 13). The conveyor belt 39 is equipped with a positioning mechanism (rubber ring) to support and position the mobile phone, ensuring precise alignment of the phone with the suction cup. After testing, the conveyor belt 39 transports the tested mobile phone out of the testing box 1, eliminating the need for manual handling and achieving automated assembly line operation of the testing process. This further improves testing efficiency and reduces labor costs. Workers only need to screen and process the unqualified mobile phones at the end of the assembly line.

[0049] It should be noted that the control module in this invention uses a PLC controller, which is electrically connected to components such as cylinder 7, dual-axis motor 14, vacuum generator, solenoid valve, electromagnet 33, detection camera 21, display 3, and conveyor belt 39, to achieve coordinated control of each component; the image data collected by the detection camera 21 is processed by the image processing module, which uses existing mature image recognition algorithms to achieve fast and accurate identification of defects, which will not be elaborated here.

[0050] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A smartphone appearance inspection system, comprising an inspection box (1) with a cylinder (7) inside, wherein the output end of the cylinder (7) is provided with a suction cup (13) for adsorbing the smartphone, characterized in that, The detection box (1) is equipped with a transmission part (20), and two first moving blocks (26) and two second moving blocks (27) are provided on its surface. The bottom of the first moving blocks (26) and the second moving blocks (27) are equipped with tilted detection cameras (21). When the transmission part (20) moves, it drives the first moving blocks (26), the second moving blocks (27) and the detection cameras (21) to move synchronously. The four detection cameras (21) move to collect images of the surface of the mobile phone frame. It also includes a drive part that can move synchronously with the transmission part (20). The drive part includes a compression sleeve (30). The compression sleeve (30) is provided with an installation cavity with the opening facing upward. The installation cavity is provided with a magnetic block (37) and an electromagnet (33). A spring (36) is provided between the magnetic block (37) and the electromagnet (33). When the electromagnet (33) is energized, the magnetic block (37) moves in a 40-degree direction. The block (37) and the electromagnet (33) generate a repulsive force and drive the extrusion sleeve (30) to move down and abut against the mobile phone. The extrusion sleeve (30) rotates around the suction cup (13) as an axis, causing the mobile phone to tilt. The output end of the cylinder (7) is fixed with a connecting rod (11). The bottom of the connecting rod (11) is fixed with an installation plate (5). The installation plate (5) is provided with a rotating sleeve (10) that runs through it from top to bottom. The sleeve (10) is provided with a rotating vertical tube (17) that runs through it. The vertical tube (17) is connected to the suction cup (13). The outer wall of the vertical tube (17) is fixed with a rotating arm (29). The bottom of the rotating arm (29) is fixed with a connecting block (34). The connecting block (34) is fixedly connected to the upper end of the electromagnet (33). The outside of the connecting block (34) is provided with a limiting ring (35). The limiting ring (35) is fixed to the inner wall of the extrusion sleeve (30).

2. The smartphone appearance inspection system according to claim 1, characterized in that, The second moving block (27) has a through mounting hole (31), the transmission part (20) passes through the mounting hole (31), and a plurality of balls (32) are rotatably connected in the mounting hole (31). The balls (32) abut against the outer surface of the transmission part (20) and exert pressure on the transmission part (20).

3. The smartphone appearance inspection system according to claim 1, characterized in that, The bottom of the mounting plate (5) is rotatably connected to four short shafts (19), which are arranged in a rectangular shape. A transmission wheel (18) is installed at the bottom of the short shaft (19), and the transmission part (20) is arranged around the outside of the four transmission wheels (18).

4. The smartphone appearance inspection system according to claim 1, characterized in that, It also includes a limiting frame (22), which is fixed to the bottom of the mounting plate (5). The outer wall of the limiting frame (22) is provided with two first guide grooves (23) and two second guide grooves (24). The two first guide grooves (23) and two second guide grooves (24) are staggered on the outer wall of the limiting frame (22). The first moving block (26) slides in the first guide groove (23) and the second moving block (27) slides in the second guide groove (24).

5. The smartphone appearance inspection system according to claim 4, characterized in that, Two sets of limiting parts are fixed on the limiting frame (22). The limiting parts are arranged opposite to the second guide groove (24). The limiting parts include limiting blocks (25) fixed on the limiting frame (22). The two limiting blocks (25) are located on both sides of the second moving block (27).

6. The smartphone appearance inspection system according to claim 1, characterized in that, A dual-axis motor (14) is installed on the upper end of the mounting plate (5). A first power shaft (15) is fixed to the output end of the dual-axis motor (14). Synchronous pulleys (16) are installed on the first power shaft (15) and the sleeve (10). The two synchronous pulleys (16) are connected by a transmission belt (12). The other output end of the dual-axis motor (14) is fixed with a second power shaft (28), which is connected to a short shaft (19).

7. The smartphone appearance inspection system according to claim 1, characterized in that, The detection box (1) is provided with a through groove (38), and a conveyor belt (39) is provided through the through groove (38). The conveyor belt (39) is located below the suction cup (13).

Images