Arc edge defect detection device for mobile phone glass cover plate

Abstract

The invention relates to the technical field of optical detection, discloses an arc edge defect detection device for a mobile phone glass cover plate, and solves the problems that when an existing mobile phone glass cover plate detection device is used for detecting different types of cover plates, the angle debugging difficulty of a light source and a camera is large, the professional requirement is high, and the detection efficiency is high. In order to solve the problems of large number of light sources and cameras, large number of used light sources and cameras and high manufacturing cost, through cooperation of a first clamping roller, a second clamping roller and a guide rail, a facing area, where a cover plate is placed, on a mold table is adjusted, and each part of the surface of the cover plate has an opportunity to face a lens fixedly provided with a camera, so that the whole cover plate can be clearly shot through one group of cameras; according to the invention, shooting conditions are satisfied, the number of used cameras is reduced, the cost is saved, detection of different types of cover plates can be realized, and corresponding measuring seat mechanisms can be replaced, so that complex links of adjusting a light source and camera angles are omitted, and the operation difficulty and specialty during detection of different types of cover plates are greatly reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of optical detection, and specifically to an arc edge defect detection device for a mobile phone glass cover plate. Background Art

[0002] The models of mobile phone glass cover plates with arc edges include 2.5D and 3.0D, which are formed by a hot bending process during processing. After formation, the arc edges also need to be defect detected, and the detection items include scratches, chipping, indentation, etc., to ensure the yield rate of mobile phone glass cover plates. Common corresponding detection devices are machine vision detection systems, which detect the defective parts of mobile phone glass cover plates through the selection and matching of light sources and cameras.

[0003] During the actual detection process, existing detection devices usually divide the surface of 2.5D and 3.0D types of mobile phone glass cover plates into a central flat part (the part with a relatively small curvature in the middle of the 3.0D mobile phone glass cover plate is also classified as the flat part) and two side curved surface parts (i.e., arc edges), and detect these two parts separately. Due to the relatively large curvature of the curved surface part, the detection difficulty increases significantly. In order to achieve effective detection of the curved surface part, it is necessary to finely adjust the angles of the light source and the camera to adapt to mobile phone glass cover plates with different arc edge curvatures. This adjustment is not only difficult but also requires extremely high professional technical levels of operators.

[0004] Therefore, in existing detection devices, when detecting 2.5D and 3.0D types of mobile phone glass cover plates, detecting different arc edge curvatures faces problems such as large difficulty in debugging the angles of the light source and the camera and high professional requirements. In addition, since it is necessary to separately set the light source and the camera for different surfaces of the mobile phone glass cover plate, the number of light sources and cameras used is large, resulting in a significant increase in the manufacturing cost of the detection device. This situation not only increases the production cost but also limits the improvement of the detection efficiency. Summary of the Invention

[0005] The purpose of the present invention is to provide an arc edge defect detection device for a mobile phone glass cover plate, which solves the problems that existing mobile phone glass cover plate detection devices have large difficulty in debugging the angles of the light source and the camera and high professional requirements, as well as a large number of light sources and cameras used and high manufacturing costs when detecting different types of cover plates.

[0006] To achieve the above purpose, the present invention provides the following technical solution: An arc edge defect detection device for a mobile phone glass cover plate, comprising: an operation table, on the upper side of which a camera is hung through a gantry, and light lamps are arranged on both sides of the camera; A measuring seat mechanism, including a mold table for placing the cover plate, guide rails are arranged on both sides of the mold table, and the radian of the upper surface of the guide rails is consistent with and horizontally parallel to the radian of the upper surface of the cover plate along the width direction; There are two feeding mechanisms, which are symmetrically arranged on both sides of the measuring seat mechanism. The feeding mechanism includes a first pinch roller and a second pinch roller for clamping the guide rail. A U-shaped mounting plate is arranged on the upper side of the operating table. The first pinch roller and the second pinch roller are assembled on one side of the U-shaped mounting plate. A driving component is assembled on the operating table. By rotating the first pinch roller through the driving component, the guide rail is moved, forcing the cover plate on the upper surface of the mold table to pass under the camera along the width direction of the cover plate. The vertically downward shooting area of the camera corresponds perpendicularly to the corresponding part of the moving cover plate surface.

[0007] As a further description of the above technical solution: The first pinch roller is rotationally assembled on one side of the U-shaped mounting plate through a driving rod one fixedly connected coaxially. One end of the driving rod one is connected with a driving component for driving the driving rod one to rotate. An extrusion component is arranged inside the U-shaped mounting plate and below the driving rod one. The second pinch roller is rotationally assembled on one side of the extrusion component. The extrusion component pushes the second pinch roller upward to cooperate with the first pinch roller to form a clamping force on the guide rail.

[0008] As a further description of the above technical solution: The extrusion component includes a slider that slides vertically inside the U-shaped mounting plate. The second pinch roller is rotationally arranged on one side of the slider through a rotating shaft. A guide groove for the up-and-down movement of the rotating shaft is opened on the side surface of the U-shaped mounting plate. A push spring for pushing the slider is arranged below the slider. The lower end of the push spring is connected with a threaded column through a base. The lower end of the threaded column is connected with an adjusting knob, and the bottom side of the U-shaped mounting plate is threadedly connected with the threaded column.

[0009] As a further description of the above technical solution: The mold table and the guide rail are fixedly connected through a framework. The guide rail includes a detection part adapted to the width direction of the cover plate. Horizontal parts are arranged on both sides of the detection part, and one end of the horizontal part is fixedly connected with one end of the detection part through a connecting part.

[0010] As a further description of the above technical solution: There are two detection parts, which are symmetrically arranged up and down. One ends of the two horizontal parts on the same side of the two detection parts are fixedly connected through a flipping part. There are two mold tables, which are symmetrically arranged up and down. The two mold tables correspond to the two detection parts one by one.

[0011] As a further description of the above technical solution: A laser sensor is assembled on one side of the U-shaped mounting plate, and a reflector cooperating with the laser sensor is assembled on the other side of the U-shaped mounting plate. Calibration holes are opened on the surfaces of the two U-shaped mounting plates. The optical signals emitted from the output end of the laser sensor pass through the two calibration holes. One calibration ring is arranged at each of the two ends inside the framework. The two calibration rings are symmetrically arranged at the two ends of the framework. A small hole for the optical signal to pass through is arranged in the middle of the calibration ring.

[0012] As a further description of the above technical solution: A plurality of suction holes are formed in the mold table, and a rubber film is provided on the lower surface of the mold table. The rubber film covers the lower sides of the plurality of suction holes. Magnetic blocks are fixedly adhered to the surface of the rubber film, and the magnetic blocks assembled on the two mold tables are in a mutually attracting relationship.

[0013] As a further description of the above technical solution: A plate-changing mechanism is used to place the cover plate on the mold table. The plate-changing mechanism includes an outer cover. A suction cup for adsorbing the cover plate is assembled on the lower side of the outer cover, and an electromagnet for attracting the magnetic block to approach is also assembled.

[0014] As a further description of the above technical solution: The driving assembly includes a motor. The output end of the motor is connected to a fourth driving rod through bevel gear transmission. Both ends of the fourth driving rod are respectively connected to a second driving rod and a third driving rod through corresponding bevel gears. The upper ends of the second driving rod and the third driving rod respectively drive the first driving rods on both sides of the measuring seat mechanism to rotate through bevel gears.

[0015] As a further description of the above technical solution: The guide rail and the framework use titanium alloy materials, and the mold table uses lightweight materials.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are as follows: 1. Through the cooperation of the first pinch roller, the second pinch roller and the guide rail, the facing area of the cover plate placed on the mold table is adjusted, so that each part of the cover plate surface has the opportunity to face the lens of the fixedly arranged camera. Thus, a group of cameras can clearly photograph the entire cover plate. While meeting the shooting conditions, the number of cameras used is reduced, the cost is saved, and for the detection of cover plates of different models, just replace the corresponding measuring seat mechanism, eliminating the complex links of adjusting the light source and the camera angle, and greatly reducing the operation difficulty and professionalism when detecting cover plates of different models.

[0017] 2. Through the setting of the flipping part, by continuing to rotate the first pinch roller, the lower detection part and the mold table can be directly adjusted to the upper side to cope with the detection of the next cover plate, saving the time for the first pinch roller and the second pinch roller to return to the initial position, thereby further improving the detection efficiency of the cover plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a front view schematic diagram of the measuring seat mechanism and the feeding mechanism of the present invention; Figure 3 is a schematic diagram of the structure of the driving assembly of the present invention; Figure 4 is a rear view schematic diagram of the measuring seat mechanism and the feeding mechanism of the present invention; Figure 5Schematic diagram of the feed mechanism of the present invention; Figure 6 Schematic diagram of the measuring seat mechanism of the present invention; Figure 7 Internal structure schematic diagram of the measuring seat mechanism of the present invention; Figure 8 Schematic diagram of the initial states of pinch roller 1, pinch roller 2, guide rail, and camera of the present invention; Figure 9 Schematic diagram of the working states of pinch roller 1, pinch roller 2, guide rail, and camera of the present invention; Figure 10 For the present invention Figure 9 Enlarged schematic diagram of A in the present invention; Figure 11 Schematic diagram of the guide rail structure of the present invention; Figure 12 Schematic diagram of the process of different models of cover plates being photographed by the camera of the present invention.

[0019] In the figure: 10, operating table; 11, camera; 12, lighting lamp; 20, measuring seat mechanism; 21, mold table; 211, suction hole; 212, rubber film; 213, magnetic block; 214, mark; 22, skeleton; 23, guide rail; 231, detection part; 232, connection part; 233, horizontal part; 234, flipping part; 24, calibration ring; 30, feed mechanism; 31, U-shaped assembly plate; 311, guide groove; 312, calibration hole; 32, pinch roller 1; 321, driving rod 1; 33, pinch roller 2; 34, extrusion assembly; 341, slider; 342, push spring; 343, base; 344, threaded column; 345, adjusting knob; 35, driving assembly; 351, driving rod 2; 352, driving rod 3; 353, driving rod 4; 354, motor; 36, laser sensor; 361, reflector; 40, plate changing mechanism; 41, outer cover; 42, electromagnet; 43, suction cup. Detailed implementation manners

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with 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 the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0021] To further understand the content of the present invention, the present invention will be described in detail in conjunction with the accompanying drawings.

[0022] Combined with Figures 1-12, a device for detecting arc edge defects of a mobile phone glass cover, comprising: an operating table 10, a camera 11 is hung on the upper side of the operating table 10 through a gantry, and lighting lamps 12 are arranged on both sides of the camera 11; The measuring seat mechanism 20 includes a mold table 21 for placing the cover plate, and guide rails 23 are provided on both sides of the mold table 21. The curvature of the upper surface of the guide rail 23 is consistent with the curvature of the upper surface of the cover plate along the width direction, and is horizontally parallel; The feeding mechanism 30 is provided with two and symmetrically arranged on both sides of the measuring base mechanism 20. The feeding mechanism 30 includes a clamping roller 1 32 and a clamping roller 2 33 for clamping the guide rail 23. A U-shaped assembly plate 31 is provided on the upper side of the operating table 10. The clamping roller 1 32 and the clamping roller 2 33 are assembled on one side of the U-shaped assembly plate 31. The clamping roller 1 32, the clamping roller 2 33 and the camera 11 are in the same vertical plane. The guide rail 23 is moved by rotating the clamping roller 1 32, forcing the cover plate on the upper surface of the mold table 21 to pass under the camera 11 along the width direction of the cover plate, and the vertically downward shooting area of ​​the camera 11 is kept perpendicular to the corresponding part of the moving cover plate surface.

[0023] Specifically, when the clamping roller 1 32 and the clamping roller 2 33 tightly clamp the surface of the guide rail 23, the tangent line of the contact part between the clamping roller 1 32 and the guide rail 23 and the tangent line of the contact part between the clamping roller 2 33 and the guide rail 23 will remain parallel (e.g. Figure 9 , Figure 10 As shown by the horizontal dotted line in the middle, when the clamping roller 1 32 rotates, the guide rail 23 is transferred to one side by friction. During the movement of the guide rail 23, the tangents of the contact parts of the clamping roller 1 32 and the clamping roller 2 33 with the guide rail 23 always maintain a parallel relationship, and the upper surface of the guide rail 23 and the surface of the cover along the width are also horizontally parallel. The vertical downward shooting direction of the camera 11 is perpendicular to the corresponding surface of the cover, that is, perpendicular to the two tangents mentioned above (as shown in the horizontal dotted line in the middle). Figure 9 , Figure 10 As shown by the vertical dotted line in the figure, it can be obtained that the vertical downward shooting area of ​​the camera 11 is perpendicular to the tangent line of the curvature of the corresponding surface of the cover plate. In this case, the light irradiated by the lighting lamp 12 on the surface of the cover plate below the camera 11 can be fully reflected to the lens of the camera 11, so that the camera 11 can clearly shoot the corresponding surface of the cover plate below. When the guide rail 23 is moved by rotating the clamping roller 32, the cover plate will also move accordingly, so that the cover plate passes below the camera 11 along its width direction (as shown in the figure). Figure 12 As shown in the figure, the tangent line corresponding to the arc surface of the cover plate passing under the camera 11 will be automatically corrected to the horizontal (because the clamping roller 1 32 and the clamping roller 2 33 tightly clamp the guide rail 23, the two tangent lines of the contact surface are always kept horizontal, so the cover plate is driven and the corresponding part of the surface is automatically corrected to the horizontal), so that the camera 11 shooting downwards can clearly shoot the corresponding surface of the cover plate; As the cover plate passes under the camera 11, the camera 11 will take multiple shots to generate clear images of different parts. Through these multiple images, defects on the entire surface of the cover plate can be effectively detected. For cover plates of different models, only the corresponding measuring seat mechanism 20 needs to be replaced. Compared with the existing operation of finely adjusting the illumination angles of the camera 11 and the lighting lamp 12 to adapt to different arc edge curvatures, the operation difficulty and professional requirements are greatly reduced, making the device easy to use. For the overall detection of the cover plate, only one set of cameras 11 needs to be set, without setting multiple sets for different areas of the cover plate surface, greatly saving the cost investment. It should be noted that when the first pinch roller 32 and the second pinch roller 33 tightly hold the guide rail 23 on the side close to the arc edge of the cover plate, the weight of the measuring seat mechanism 20 will tend to one side with the first pinch roller 32 and the second pinch roller 33 as the center, resulting in a slight inclination of the tangent line of the part where the first pinch roller 32 and the second pinch roller 33 hold the guide rail 23. This inclination error is within the allowable range of the vertical shooting of the camera 11 and does not affect the clear shooting of the corresponding area of the cover plate surface by the shooting area of the camera 11. The downward shooting range of the camera 11 is frustum-shaped. The reason why it is difficult for the existing camera 11 to shoot the arc edge of the cover plate is that the arc edge of the cover plate has a large curvature, and it is difficult for some surfaces to reflect the light irradiated by the lighting lamp 12 onto the lens of the camera 11, resulting in difficult shooting and poor imaging effect. In this solution, by adjusting the facing area of the arc edge of the cover plate, each part of the arc edge has the opportunity to face the lens of the camera 11, so as to achieve clear shooting of the entire surface of the cover plate, and multiple sets of cameras 11 are not required, saving costs.

[0024] Combined Figures 2-6 , the first pinch roller 32 is rotationally assembled on one side of the U-shaped assembly plate 31 through a driving rod 321 fixedly connected coaxially. One end of the driving rod 321 is connected with a driving component 35 for driving the driving rod 321 to rotate. Below the driving rod 321 inside the U-shaped assembly plate 31, there is an extrusion component 34. The second pinch roller 33 is rotationally assembled on one side of the extrusion component 34, and the extrusion component 34 pushes the second pinch roller 33 upward to cooperate with the first pinch roller 32 to form a clamp on the guide rail 23.

[0025] The driving component 35 includes a driving rod 351, a driving rod 352, a driving rod 353, and a motor 354. As Figure 2 , Figure 3As shown in the figure, the output end of the motor 354 drives the driving rod four 353 to rotate through bevel gears. The two ends of the driving rod four 353 then synchronously drive the driving rod two 351 and the driving rod three 352 to rotate through the correspondingly arranged bevel gears. The upper ends of the driving rod two 351 and the driving rod three 352 then drive the driving rod one 321 on both sides of the measuring seat mechanism 20 to rotate through bevel gears respectively, so as to synchronously control the pinch rollers one 32 on both sides of the measuring seat mechanism 20, and further facilitate the stable transmission of the measuring seat mechanism 20 in the preset direction.

[0026] The extrusion assembly 34 includes a slider 341 that slides vertically inside the U-shaped assembly plate 31. The pinch roller two 33 is rotatably arranged on one side of the slider 341 through a rotating shaft. A guide groove 311 for the up-and-down movement of the rotating shaft is provided on the side surface of the U-shaped assembly plate 31. A push spring 342 for pushing the slider 341 is provided below the slider 341. The lower end of the push spring 342 is connected to a threaded column 344 through a base 343. The lower end of the threaded column 344 is connected to an adjusting knob 345. The bottom side of the U-shaped assembly plate 31 is threadedly connected to the threaded column 344. A locking structure (not shown in the figure) for locking the position of the threaded column 344 is also provided on the bottom side of the U-shaped assembly plate 31, which is equivalent to the locking function of a rail clamp, so that after the position of the base 343 is adjusted, the position of the threaded column 344 is locked.

[0027] Specifically, the threaded column 344 is rotated by the adjusting knob 345 (the rotation of the adjusting knob 345 can be completed with the help of auxiliary tools, such as a wrench) to adjust the height of the base 343. When the base 343 is adjusted upward, the push spring 342 is compressed, and the push spring 342 elastically pushes the slider 341 upward, prompting the pinch roller two 33 to cooperate with the pinch roller one 32 to tightly clamp the guide rail 23 (in the initial state, when the levelness of the guide rail 23 is insufficient, the base 343 should be continuously adjusted upward to increase the clamping force between the pinch roller one 32 and the pinch roller two 33, forcing the levelness of the corrected guide rail 23 to be within the error range); when the base 343 is adjusted downward, first the push spring 342 returns to its natural length, and then the upper end of the push spring 342 pulls the slider 341 downward to separate the pinch roller one 32 from the pinch roller two 33. At this time, it is convenient to replace the measuring seat mechanism 20 between the two U-shaped assembly plates 31.

[0028] Combined with Figures 2-11 , the mold table 21 and the guide rail 23 are fixedly connected through the framework 22. The guide rail 23 includes a detection part 231 adapted to the width direction of the cover plate (the shape of the detection part 231 is set accordingly according to the model of the cover plate). Horizontal parts 233 are provided on both sides of the detection part 231. One end of the horizontal part 233 is fixedly connected to one end of the detection part 231 through a connecting part 232.

[0029] Specifically, the first pinch roller 32 and the second pinch roller 33 are initially clamped at the horizontal portion 233. When the first pinch roller 32 and the second pinch roller 33 clamp the horizontal portion 233, the entire guide rail 23 tends to be horizontal, and the mold table 21 is also driven to be horizontal accordingly. The levelness of the mold table 21 can be visually observed, enabling a direct understanding of whether the clamping force of the first pinch roller 32 and the second pinch roller 33 on the guide rail 23 is sufficient to adjust the levelness of the mold table 21 to horizontal during the replacement of the measuring seat mechanism 20, so as to make adaptive adjustments. The setting of the connecting portion 232 facilitates a smooth transition when the first pinch roller 32 and the second pinch roller 33 move between the detection portion 231 and the horizontal portion 233. The setting of the detection portion 231 is to cooperate with the first pinch roller 32 and the second pinch roller 33 to move the cover plate placed on the mold table 21 along a preset path, enabling the camera 11 to clearly capture the cover plate.

[0030] There are two detection portions 231, which are symmetrically arranged up and down. One ends of the two horizontal portions 233 on the same side of the two detection portions 231 are fixedly connected through a flipping portion 234. There are two mold tables 21, which are symmetrically arranged up and down, and the two mold tables 21 correspond to the two detection portions 231 one by one.

[0031] Specifically, the first pinch roller 32 and the second pinch roller 33 move from one side of the horizontal portion 233 through the detection portion 231 to the horizontal portion 233 on the other side, enabling the camera 11 to complete the shooting and detection of the corresponding cover plate. Subsequently, through the setting of the flipping portion 234, the first pinch roller 32 is controlled to continue rotating, and the lower detection portion 231 and the lower mold table 21 can be directly adjusted to the upper side to handle the detection of the next cover plate. This saves the time for controlling the first pinch roller 32 and the second pinch roller 33 to retract to the initial position, thus improving the detection efficiency of the cover plate.

[0032] Combined Figures 2-6 , a laser sensor 36 is assembled on one side of the U-shaped assembly plate 31, and a reflector 361 that cooperates with the laser sensor 36 is assembled on the other side of the U-shaped assembly plate 31. Calibration holes 312 are provided on the surfaces of the two U-shaped assembly plates 31. The light signal emitted from the output end of the laser sensor 36 passes through the two calibration holes 312. One calibration ring 24 is provided at each end inside the skeleton 22. The two calibration rings 24 are symmetrically located at both ends of the skeleton 22, and a small hole for the light signal to pass through is provided in the middle of the calibration ring 24.

[0033] Specifically, when the first pinch roller 32 and the second pinch roller 33 are clamped at one end of the guide rail 23 to make the guide rail 23 in the horizontal initial state, the optical signal emitted from the output end of the laser sensor 36 passes through the calibration ring 24 at the other end of the guide rail 23 and is projected onto the reflector 361. When the levelness of the guide rail 23 is insufficient, the calibration ring 24 will block the optical signal output by the laser sensor 36, making it impossible to reach the reflector 361. Further, information on the insufficient levelness of the guide rail 23 can be obtained. Subsequently, an external alarm device (such as an audible and visual alarm device) can be used for reminder, indicating that it is necessary to calibrate the clamping force of the first pinch roller 32 and the second pinch roller 33 on the guide rail 23 to restore the levelness of the guide rail 23 to the preset range, avoiding insufficient clamping force of the first pinch roller 32 and the second pinch roller 33 on the guide rail 23, causing the cover plate to tilt excessively and affecting the clear shooting effect of the camera 11 on the surface of the cover plate.

[0034] Combined with Figures 6-7 , a plurality of suction holes 211 are provided on the mold table 21, and a rubber film 212 is provided on the lower surface of the mold table 21. The rubber film 212 covers the lower sides of the plurality of suction holes 211, and magnetic blocks 213 are fixedly adhered to the surface of the rubber film 212. The magnetic blocks 213 assembled on the two mold tables 21 are in a mutually attracting relationship.

[0035] The plate changing mechanism 40 is used to place the cover plate on the mold table 21. The plate changing mechanism 40 includes an outer cover 41. A suction cup 43 for adsorbing the cover plate is assembled on the lower side of the outer cover 41, and an electromagnet 42 for attracting the magnetic block 213 to approach is also assembled. The suction cup 43 is connected to an external air circuit system (equivalent to an air circuit system for controlling the telescoping of a cylinder), and the cover plate is adsorbed and released respectively by changing the pressure on the lower side of the suction cup 43 so as to transfer the cover plate; the electromagnet 42 is controlled by a control module to change the magnetic pole direction by changing the direction of the current, so that the electromagnet 42 can attract the magnetic blocks 213 on the two mold tables 21 (since the two magnetic blocks 213 in the up-and-down relationship are in a mutually attracting state, the magnetic poles on the side far from each other are opposite, so the magnetic pole direction at the lower end of the electromagnet 42 needs to be adjustable to attract the above two magnetic blocks 213).

[0036] Specifically, when the cover plate is placed on the upper surface of the mold table 21 through the plate changing mechanism 40, the electromagnet 42 will attract the magnetic block 213 to approach. The suction force of the electromagnet 42 on the adjacent magnetic block 213 is greater than the suction force between this magnetic block 213 and the other magnetic block 213 below. After the cover plate is placed and the plate changing mechanism 40 is removed, the two magnetic blocks 213 corresponding up and down will attract and approach each other, thereby pulling the surface of the rubber film 212 to generate negative pressure in the suction holes 211, so as to firmly adsorb the cover plate on the surface of the mold table 21, facilitating the movement of the cover plate with the mold table 21 and avoiding the phenomenon of falling off from the surface of the mold table 21.

[0037] The upper surface of the mold table 21 is provided with an identifier 214, and the identifier 214 corresponds to the magnetic pole on the upper side of the magnetic block 213 assembled on the mold table 21, which provides convenience for the later debugging of the device.

[0038] The guide rail 23 and the framework 22 are made of titanium alloy material. The titanium alloy material is light in texture and high in hardness, which provides rigidity for the guide rail 23 while reducing the overall weight of the measuring seat mechanism 20. The mold table 21 is made of lightweight materials such as lightweight plastics and carbon fiber materials to further reduce the overall weight of the measuring seat mechanism 20. By reducing the overall weight of the measuring seat mechanism 20, when the first pinch roller 32 and the second pinch roller 33 clamp on one side of the measuring seat mechanism 20, the weight of the measuring seat mechanism 20 tending to one side to be overcome is reduced, and the deviation error of the measuring seat mechanism 20 caused by the weight on the side tending to one side is reduced, so as to further improve the clear shooting effect of the camera 11 cooperating with the measuring seat mechanism 20 on the surface of the cover plate.

[0039] The above is only the preferred specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent replacements or changes, and should be covered within the protection scope of the present invention.

Claims

1. A device for detecting arc edge defects of mobile phone glass cover, characterized in that: include: An operating table (10), wherein a camera (11) is mounted on the upper side of the operating table (10) via a gantry, and lighting lamps (12) are provided on both sides of the camera (11); The measuring seat mechanism (20) comprises a mold platform (21) for placing the cover plate, guide rails (23) are provided on both sides of the mold platform (21), the curvature of the upper surface of the guide rail (23) is consistent with the curvature of the upper surface of the cover plate along the width direction, and is horizontally parallel; The feeding mechanism (30) is provided with two and symmetrically disposed on both sides of the measuring base mechanism (20), the feeding mechanism (30) comprising a clamping roller 1 (32) and a clamping roller 2 (33) for clamping the guide rail (23), a U-shaped assembly plate (31) being provided on the upper side of the operating table (10), the clamping roller 1 (32) and the clamping roller 2 (33) being assembled on one side of the U-shaped assembly plate (31), and a driving component (35) being assembled on the operating table (10), the clamping roller 1 (32) being rotated by the driving component (35), so that the guide rail (23) is moved, forcing the cover plate on the upper surface of the mold table (21) to pass under the camera (11) along the width direction of the cover plate, and the vertically downward shooting area of ​​the camera (11) is kept perpendicular to the corresponding part of the moving cover plate surface.

2. The arc edge defect detection device for mobile phone glass cover according to claim 1, characterized in that: The clamping roller 1 (32) is rotatably mounted on one side of the U-shaped assembly plate (31) via a coaxially fixed driving rod 1 (321); one end of the driving rod 1 (321) is connected to a driving assembly (35) for driving the driving rod 1 (321) to rotate; an extrusion assembly (34) is provided on the inner side of the U-shaped assembly plate (31) and below the driving rod 1 (321); the clamping roller 2 (33) is rotatably mounted on one side of the extrusion assembly (34); the extrusion assembly (34) pushes the clamping roller 2 (33) upwards to cooperate with the clamping roller 1 (32) to clamp the guide rail (23).

3. The arc edge defect detection device for mobile phone glass cover according to claim 2, characterized in that: The extrusion assembly (34) comprises a slider (341) which slides vertically on the inner side of the U-shaped assembly plate (31); the second clamping roller (33) is rotatably arranged on one side of the slider (341) via a rotating shaft; a guide groove (311) for the rotating shaft to move up and down is provided on the side surface of the U-shaped assembly plate (31); a push spring (342) for pushing the slider (341) is provided on the lower side of the slider (341); the lower end of the push spring (342) is connected to a threaded column (344) via a base (343); the lower end of the threaded column (344) is connected to an adjusting knob (345); and the bottom side of the U-shaped assembly plate (31) is threadedly connected to the threaded column (344).

4. The arc edge defect detection device for mobile phone glass cover according to claim 3 is characterized in that: The mold platform (21) and the guide rail (23) are fixedly connected via a frame (22); the guide rail (23) comprises a detection portion (231) adapted to the width direction of the cover plate; both sides of the detection portion (231) are provided with horizontal portions (233); one end of the horizontal portion (233) is fixedly connected to one end of the detection portion (231) via a connecting portion (232).

5. The arc edge defect detection device for mobile phone glass cover according to claim 4, characterized in that: Two detection parts (231) are provided, symmetrical in the upper and lower directions; one end of two horizontal parts (233) on the same side of the two detection parts (231) are fixedly connected via a flip part (234); two mold platforms (21) are provided, symmetrical in the upper and lower directions; and the two mold platforms (21) correspond one to one with the two detection parts (231).

6. The arc edge defect detection device for mobile phone glass cover according to claim 5, characterized in that: A laser sensor (36) is mounted on one side of the U-shaped mounting plate (31), and a reflector (361) matched with the laser sensor (36) is mounted on the other side of the U-shaped mounting plate (31). Calibration holes (312) are provided on the surfaces of the two U-shaped mounting plates (31). The two calibration holes (312) allow light signals emitted from the output end of the laser sensor (36) to pass through. A calibration ring (24) is provided at each of the two ends of the inner side of the frame (22). The two calibration rings (24) are symmetrically arranged at the two ends of the frame (22). A small hole is provided in the middle of the calibration ring (24) for the light signal to pass through.

7. The arc edge defect detection device for mobile phone glass cover according to claim 5, characterized in that: The mold platform (21) is provided with a plurality of suction holes (211), and a rubber film (212) is provided on the lower surface of the mold platform (21), the rubber film (212) covers the lower side of the plurality of suction holes (211), and a magnetic block (213) is fixedly attached to the surface of the rubber film (212), and the magnetic blocks (213) respectively mounted on the two mold platforms (21) are in a mutually attractive relationship.

8. The arc edge defect detection device for mobile phone glass cover according to claim 7, characterized in that: The plate changing mechanism (40) is used to place the cover plate on the mold platform (21), and the plate changing mechanism (40) comprises an outer cover (41), and the lower side of the outer cover (41) is equipped with a suction cup (43) for adsorbing the cover plate, and is also equipped with an electromagnet (42) for attracting the magnetic block (213) to approach.

9. The arc edge defect detection device for mobile phone glass cover according to claim 1, characterized in that: The driving assembly (35) comprises a motor (354), the output end of the motor (354) is connected to a driving rod four (353) via a bevel gear transmission, the two ends of the driving rod four (353) are respectively connected to a driving rod two (351) and a driving rod three (352) via corresponding bevel gears, and the upper ends of the driving rod two (351) and the driving rod three (352) respectively drive the driving rod one (321) on both sides of the measuring seat mechanism (20) to rotate via the bevel gears.

10. The arc edge defect detection device for mobile phone glass cover according to claim 1, characterized in that: The guide rail (23) and the frame (22) are made of titanium alloy material, and the mold platform (21) is made of lightweight material.

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