A device for scanning and detecting defects in curved mobile phone glass covers.

Abstract

This invention discloses a defect scanning and detection device for curved mobile phone glass covers, relating to the field of defect detection technology for curved mobile phone glass covers. It includes an adsorption mechanism, a ring track, and a detection mechanism. The adsorption mechanism is used to fix and adsorb the curved mobile phone glass cover. The ring track surrounds the curved mobile phone glass cover. The detection mechanism includes a movable stage and a curved edge detection component connected to each other. The ring track is provided with a driving unit for driving the movable stage to slide along the ring track. The curved edge detection component includes a curved surface detection rod and a side detection rod. The bottom of the curved surface detection rod is provided with a first pressure sensor that abuts against the curved surface of the curved mobile phone glass cover. The bottom of the side detection rod is provided with a second pressure sensor that abuts against the side of the curved mobile phone glass cover. This invention can comprehensively detect the curved surface and side of the curved mobile phone glass cover, thereby improving the accuracy and comprehensiveness of the detection, and is applicable to covers with various curvature specifications.

Description

Technical Field

[0001] This invention relates to the field of defect detection technology for curved mobile phone glass covers, and particularly to a scanning and detection device for defects in curved mobile phone glass covers. Background Technology

[0002] With the continuous development of smartphone technology, the appearance design of mobile phones is becoming more and more diversified, among which curved glass covers have been widely used. The quality of curved glass covers has an important impact on the overall performance and appearance of mobile phones. The flatness of its surface, the presence of defects such as bulges, deformations, and scratches are all directly related to the quality of the mobile phone.

[0003] Traditional testing equipment is often designed for flat glass covers. It is not comprehensive or accurate enough for curved glass covers, especially at the junction of the curve and the flat surface, and at different locations of the curve (such as the top edge, side edge, bottom end face, etc.). The testing equipment needs to be tested repeatedly. When dealing with products with various curvature specifications, different testing equipment or complex adjustments are required, which increases production costs and testing time and reduces production efficiency. Summary of the Invention

[0004] The purpose of this invention is to at least solve one of the technical problems existing in the prior art. To this end, this invention provides a defect scanning and detection device for curved mobile phone glass covers, which can comprehensively detect the curved surface and sides of curved mobile phone glass covers, thereby improving the accuracy and comprehensiveness of the detection. When dealing with curved glass covers of various curvature specifications, there is no need to change different detection equipment or make complex adjustments, thus improving production efficiency.

[0005] A defect scanning and detection device for curved mobile phone glass covers according to an embodiment of the present invention includes:

[0006] Circular track;

[0007] An adsorption mechanism is located on the inner circumference of the annular track and is used to fix and adsorb the curved mobile phone glass cover.

[0008] The detection mechanism includes a movable stage and an arc-shaped edge detection assembly connected to each other. The annular track has a drive unit for driving the movable stage to slide along the annular track. The arc-shaped edge detection assembly includes an extension rod, an adjusting rod, a moving block, an arc-shaped surface detection rod, and a side detection rod. The extension rod has a cavity, and the moving block is located within the cavity. The adjusting rod extends horizontally and passes through the cavity. The moving block is threadedly connected to the adjusting rod. When the adjusting rod rotates, the moving block moves horizontally along the adjusting rod. Both the arc-shaped surface detection rod and the side detection rod are locked to the moving block by fasteners. When the fasteners are released, both the arc-shaped surface detection rod and the side detection rod can slide up and down relative to the moving block. The bottom of the arc-shaped surface detection rod has a first pressure sensor configured to abut against the arc surface of the arc-shaped mobile phone glass cover. The bottom of the side detection rod has a second pressure sensor configured to abut against the side of the arc-shaped mobile phone glass cover.

[0009] The curved mobile phone glass cover defect scanning and detection device according to an embodiment of the present invention has at least the following beneficial effects: During the detection process, the curved mobile phone glass cover is first fixed by an adsorption mechanism. Then, the fasteners locking the curved surface detection rod and the side detection rod are loosened, so that the curved surface detection rod and the side detection rod are in a relaxed state. Since the curved surface detection rod is located above the curved mobile phone glass cover, under the action of gravity, the first pressure sensor at the bottom of the curved surface detection rod contacts the curved surface of the curved mobile phone glass cover. The side detection rod is located on the side of the curved mobile phone glass cover, and its position can be adjusted up and down. At the same time, the moving block can be moved horizontally by the adjusting rod. The moving block will move the curved surface detection rod and the side detection rod together horizontally to adjust their positions. Finally, the first pressure sensor stably contacts the curved surface of the curved mobile phone glass cover and the second pressure sensor stably contacts the side of the curved mobile phone glass cover. Then, the fasteners are locked to fix the positions of the curved surface detection rod and the side detection rod. Then, the driving unit drives... The moving stage moves along a circular track, rotating once around the curved mobile phone glass cover to completely inspect it. During this process, the first pressure sensor remains in contact with the curved surface of the glass cover, and the second pressure sensor remains in contact with its side. If defects or scratches are encountered, the first and second pressure sensors generate changing electrical signals, thus indicating whether scratches or deformation defects exist on the curved surface or side of the glass cover. This improves the accuracy and comprehensiveness of the inspection. When testing curved mobile phone glass covers with other curvature specifications, the fasteners can be loosened, and the vertical positions of the curved surface detection rod and the side detection rod can be adjusted. The horizontal positions of the curved surface detection rod and the side detection rod can also be adjusted by the adjustment rod, so that the first pressure sensor contacts the new curved surface, and the second pressure sensor contacts the new side. This eliminates the need to change different inspection equipment or make complex adjustments, reducing production costs and inspection time, and improving production efficiency.

[0010] According to some embodiments of the present invention, the first pressure sensor and the second pressure sensor are configured as piezoelectric sensors. The piezoelectric crystal of the first pressure sensor is configured as a rotatable sphere, which is used to abut against the arc surface of the arc-shaped mobile phone glass cover. The piezoelectric crystal of the second pressure sensor is configured as a cylinder that can rotate about its own axis, and the outer peripheral wall of the cylinder abuts against the side of the arc-shaped mobile phone glass cover.

[0011] According to some embodiments of the present invention, there are multiple arc surface detection rods, which are arranged at intervals along the length direction of the adjusting rod. Along the arrangement direction of the multiple arc surface detection rods, from the side away from the arc-shaped mobile phone glass cover to the side closer to the arc-shaped mobile phone glass cover, the height of the lowest position of the multiple spheres increases sequentially to adapt to the arc surface of the arc-shaped mobile phone glass cover.

[0012] According to some embodiments of the present invention, the movable block includes a slider and a fastening block, a mounting groove is defined between the slider and the fastening block, the arc surface detection rod and the side detection rod are mounted in the mounting groove, and the slider and the fastening block are locked together by the fastener.

[0013] According to some embodiments of the present invention, the detection mechanism further includes a bottom detection assembly, which includes a fixed rod, a bottom surface detection rod, an elastic sleeve, and a rotary encoder. The fixed rod is connected to the moving stage and is horizontally arranged and located below the curved mobile phone glass cover. The bottom surface detection rod is parallel to the fixed rod and is connected to the elastic sleeve. The elastic sleeve is fixedly sleeved on the outer periphery of the fixed rod. The outer peripheral wall of the bottom surface detection rod is configured to abut against the bottom surface of the curved mobile phone glass cover. The elastic sleeve is capable of deformation and rotation relative to the fixed rod. The rotary encoder is used to detect whether the elastic sleeve rotates relative to the fixed rod.

[0014] According to some embodiments of the present invention, the detection mechanism further includes a camera module and a light-emitting component. The camera module is connected to the mobile stage and located above the curved mobile phone glass cover. The light-emitting component is connected to the mobile stage and located directly below the curved surface of the curved mobile phone glass cover. The light-emitting component is used to emit light upwards. A light-shielding light is provided in the light-emitting direction of the light-emitting component. The camera module is used to receive the light emitted by the light-emitting component.

[0015] According to some embodiments of the present invention, the top of the mobile platform is provided with a display screen, which is used to display the imaging of the camera module or the detection result parameters of the detection mechanism.

[0016] According to some embodiments of the present invention, the curved mobile phone glass cover defect scanning and detection device further includes a detection platform, the annular track is disposed on the detection platform, the detection platform is provided with an annular boss, the inner peripheral wall of the boss is formed with a stepped groove, the curved mobile phone glass cover is placed in the stepped groove, and the stepped groove is used to match and position multiple curved mobile phone glass covers of different sizes.

[0017] According to some embodiments of the present invention, the curved mobile phone glass cover defect scanning and detection device further includes a lifting mechanism, which is used to drive the adsorption mechanism to perform lifting and lowering movements.

[0018] According to some embodiments of the present invention, the adsorption mechanism includes a plurality of guide connecting columns, a negative pressure connecting seat and a negative pressure device. The top of the guide connecting column is provided with a suction nozzle, which is used to adsorb the bottom of the curved mobile phone glass cover. The negative pressure connecting seat is located below the guide connecting column. The plurality of guide connecting columns are connected to the negative pressure device through the negative pressure connecting seat. The driving end of the lifting mechanism is connected to the bottom end of the negative pressure connecting seat.

[0019] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0021] Figure 1 This is a schematic diagram of the structure of the arc-shaped mobile phone glass cover defect scanning and detection device according to some embodiments of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of the arc-shaped mobile phone glass cover defect scanning and detection device (hidden detection stage) according to some embodiments of the present invention.

[0023] Figure 3 for Figure 2 Enlarged view of point A in the image;

[0024] Figure 4 This is a partial cross-sectional view of the detection mechanism of the arc-shaped mobile phone glass cover defect scanning and detection device according to some embodiments of the present invention;

[0025] Figure 5 This is a partial cross-sectional view of the detection mechanism of the arc-shaped mobile phone glass cover defect scanning and detection device according to some embodiments of the present invention;

[0026] Figure 6 This is a schematic diagram of the arc-shaped edge detection component and the bottom detection component of the detection mechanism of the arc-shaped mobile phone glass cover defect scanning and detection device according to some embodiments of the present invention.

[0027] Figure 7 This is a schematic diagram of the arc-shaped edge detection component of the detection mechanism of the arc-shaped mobile phone glass cover defect scanning and detection device according to some embodiments of the present invention.

[0028] Figure 8 This is a front view of a curved mobile phone glass cover defect scanning and detection device according to some embodiments of the present invention;

[0029] Figure 9 for Figure 8 Enlarged view of point B in the image;

[0030] Figure 10 for Figure 8 Enlarged view of point C in the image;

[0031] Figure 11 This is a schematic diagram of the bottom detection component and the curved mobile phone glass cover plate of the detection mechanism of the defect scanning and detection device for curved mobile phone glass cover plates according to some embodiments of the present invention.

[0032] Figure 12 for Figure 11 Enlarged view of point D in the image.

[0033] Figure label:

[0034] 1000 Curved Mobile Phone Glass Cover Defect Scanning and Detection Device;

[0035] 1. Curved mobile phone glass cover; 2. Curved surface; 3. Side;

[0036] Adsorption mechanism 100, guide connecting column 110, negative pressure connecting seat 120;

[0037] Circular track 200, drive unit 210, friction wheel 220;

[0038] The components include: a detection mechanism 300, a moving stage 310, a display screen 311, an arc-shaped edge detection assembly 320, an extension rod 321, a cavity 3211, an adjusting rod 322, a moving block 323, a slider 3231, a fastening block 3232, a mounting groove 3233, an arc-shaped surface detection rod 324, a first pressure sensor 325, a side detection rod 326, and a second pressure sensor 327.

[0039] Bottom detection component 400, fixing rod 410, bottom surface detection rod 420, elastic sleeve 430, rotary encoder 440;

[0040] Light-emitting component 510, light-shielding component 511;

[0041] Inspection table 600, boss 610, stepped groove 611, support table 620;

[0042] Lifting mechanism 700. Detailed Implementation

[0043] Reference Figure 1 As shown, the curved mobile phone glass cover defect scanning and detection device 1000 according to an embodiment of the present invention includes an adsorption mechanism 100, an annular track 200, and a detection mechanism 300. The adsorption mechanism 100 can generate adsorption force to fix and adsorb the curved mobile phone glass cover 1, and when the curved mobile phone glass cover 1 is fixed, it is in a horizontal state. The annular track 200 has an annular structure and surrounds the curved mobile phone glass cover 1 for one circumference, and the adsorption mechanism 100 is located on the inner circumference of the annular track 200.

[0044] Reference Figure 1 and Figure 2 As shown, the inspection mechanism 300 includes a movable stage 310 and an arc-shaped edge inspection component 320 connected to each other, as shown in the figure. Figure 8 and Figure 10 As shown, the annular track 200 is provided with a drive unit 210. The drive unit 210 is connected to the bottom end of the moving platform 310 and is sleeved on the outer periphery of the annular track 200. The drive unit 210 is used to drive the moving platform 310 to slide along the annular track 200. The drive unit 210 contacts the annular track 200 through a friction wheel 220. The friction wheel 220 is horizontally arranged, and the rotation axis of the friction wheel 220 is arranged in the vertical direction. There is friction between the friction wheel 220 and the annular track 200. When the friction wheel 220 rotates, it can drive the drive unit 210 to move stably along the annular track 200. The moving platform 310 is fixed above the drive unit 210, and the drive unit 210 can drive the moving platform 310 to move together along the annular track 200.

[0045] Reference Figure 1 and Figure 4 As shown, the arc-shaped edge detection assembly 320 includes an extension rod 321, an adjusting rod 322, a moving block 323, an arc surface detection rod 324, and a side detection rod 326. The extension rod 321 has a cavity 3211 inside, and the moving block 323 is located inside the cavity 3211. Both the extension rod 321 and the adjusting rod 322 extend horizontally. The adjusting rod 322 is located inside the extension rod 321 and passes through the cavity 3211. The moving block 323 is threadedly connected to the adjusting rod 322. The adjusting rod 322 can be understood as a screw, and the moving block 323 can be understood as a nut. When the adjusting rod 322 rotates, the moving block 323 will move horizontally along the length of the adjusting rod 322. In some embodiments, a drive device (e.g., a motor) can be arranged to drive the adjusting rod 322 to rotate. The drive device can be arranged inside the moving platform 310, or the adjusting rod 322 can be rotated manually. The cavity 3211 can restrict the moving block 323 to remain in a vertical state. When the adjusting rod 322 rotates, the moving block 323 can only move horizontally along the length direction of the adjusting rod 322.

[0046] Reference Figure 4 and Figure 5As shown, the movable block 323 is provided with mounting slots 3233. The sum of the number of side detection rods 326 and the number of arc-shaped detection rods 324 is equal to the number of mounting slots 3233. The side detection rods 326 and arc-shaped detection rods 324 extend in the vertical direction and are installed one-to-one in each mounting slot 3233. The mounting slot 3233 can be understood as a strip-shaped groove extending in the vertical direction. Both the arc-shaped detection rods 324 and the side detection rods 326 are locked in the mounting slots 3233 by fasteners (e.g., bolts). When the fasteners are loosened, the arc-shaped detection rods 324 and the side detection rods 326 can slide up and down relative to the mounting slots 3233 to adjust their positions in the vertical direction. A first pressure sensor 325 is provided at the bottom of the arc-shaped detection rod 324, and a second pressure sensor 327 is provided at the bottom of the side detection rod 326. Figure 9 As shown, the first pressure sensor 325 is configured to abut against the arc surface 2 of the curved mobile phone glass cover 1, where the arc surface 2 can be understood as the arc surface at the outer periphery of the curved mobile phone glass cover 1. The second pressure sensor 327 is configured to abut against the side edge 3 of the curved mobile phone glass cover 1, where the side edge 3 can be understood as the outer periphery edge of the bottom surface of the curved mobile phone glass cover 1.

[0047] During the testing process, the curved mobile phone glass cover 1 is first fixed by the adsorption mechanism 100, at which point the curved mobile phone glass cover 1 is in a horizontal state. Then, the fasteners locking the curved surface detection rod 324 and the side detection rod 326 are loosened, so that the curved surface detection rod 324 and the side detection rod 326 are in a relaxed state. Since the curved surface detection rod 324 is located above the curved mobile phone glass cover 1, under the action of gravity, the first pressure sensor 325 at the bottom of the curved surface detection rod 324 will contact the curved surface 2 of the curved mobile phone glass cover 1. The side detection rod 326 is located on the curved mobile phone glass cover 1. The side of the glass cover 1 allows adjustment of the vertical position of the side detection rod 326. Simultaneously, the adjusting rod 322 drives the moving block 323 to move horizontally. The moving block 323 then moves the curved surface detection rod 324 and the side detection rod 326 horizontally together to adjust their positions. The curved surface detection rod 324 and the side detection rod 326 gradually approach the curved mobile phone glass cover 1. During the horizontal movement of the moving block 323, the cavity 3211 keeps the moving block 323 in a vertical position, thus keeping the curved surface detection rod 324 and the side detection rod 326 in a vertical position, ultimately... Figure 9As shown, the first pressure sensor 325 is stably in contact with the curved surface 2 of the curved mobile phone glass cover 1, and the second pressure sensor 327 is stably in contact with the side edge 3 of the curved mobile phone glass cover 1. Then, the fasteners are locked to fix the positions of the curved surface detection rod 324 and the side detection rod 326. Then, the drive unit 210 drives the moving stage 310 to move along the circular track 200, so that the moving stage 310 rotates around the curved mobile phone glass cover 1 for one revolution, thereby completely detecting the curved mobile phone glass cover 1. During this process, the first pressure sensor 325 always maintains contact with the curved surface 2 of the curved mobile phone glass cover 1. The two pressure sensors 327 are always in contact with the side 3 of the mobile phone glass cover. This can be understood as the first pressure sensor 325 and the second pressure sensor 327 slightly pressing against the curved mobile phone glass cover 1. If surface defects or scratches are encountered, the first pressure sensor 325 or the second pressure sensor 327 will be squeezed or released. The first pressure sensor 325 or the second pressure sensor 327 will then generate a changing electrical signal, thereby knowing whether there are scratches or deformation defects (such as raised areas or recessed areas) on the curved surface 2 or the side 3 of the mobile phone glass cover. This can improve the accuracy and comprehensiveness of the detection.

[0048] It should also be noted that after the above tests are completed, if it is necessary to continue testing curved mobile phone glass covers 1 with other curvature specifications, the fasteners can be loosened to adjust the vertical position of the curved surface detection rod 324 and the side detection rod 326. The horizontal position of the curved surface detection rod 324 and the side detection rod 326 can be adjusted by adjusting rod 322, so that the first pressure sensor 325 contacts the curved surface of the new curved mobile phone glass cover 1, and the second pressure sensor 327 contacts the side of the new curved mobile phone glass cover 1. Then the fasteners are tightened to fix the first pressure sensor 325 and the second pressure sensor 327. This operation can be carried out without changing different testing equipment or making complex adjustments, which can reduce production costs and testing time and improve production efficiency.

[0049] It should also be noted that, since the moving block 323 is threadedly connected to the adjusting rod 322, the moving block 323 can only move horizontally when the adjusting rod 322 rotates. If a horizontal force is applied to the moving block 323, the moving block 323 cannot drive the adjusting rod 322 to rotate. Therefore, it can be ensured that the moving block 323 will not move horizontally on its own when subjected to a horizontal force. During the detection process, the positions of the first pressure sensor 325 and the second pressure sensor 327 relative to the moving block 323 can remain unchanged, thereby improving the detection accuracy.

[0050] In some embodiments, the first pressure sensor 325 and the second pressure sensor 327 are configured as piezoelectric sensors. Piezoelectric sensors detect the magnitude of external forces through the positive piezoelectric effect. When an external force acts on the piezoelectric crystal of the piezoelectric sensor, the charge distribution inside the crystal changes, thereby generating charges on the electrodes. This phenomenon is called the positive piezoelectric effect. The positive piezoelectric effect occurs because the lattice structure inside the piezoelectric crystal is distorted when subjected to external force, causing the centers of positive and negative charges in the lattice to no longer coincide, thus generating an electric dipole moment. When a large number of electric dipole moments are generated, charges are formed on the electrodes. By measuring the magnitude of this electrical signal, information about the external force, such as its magnitude, direction, and frequency, can be obtained.

[0051] In this embodiment, the piezoelectric crystal of the first pressure sensor 325 is configured as a sphere, which can be understood as a ball bearing. The sphere is rotatable and is used to abut against the curved surface of the curved mobile phone glass cover 1. The sphere and the curved surface of the curved mobile phone glass cover 1 form point contact, resulting in high detection accuracy. When the moving stage 310 slides along the annular track 200, the sphere always maintains contact with the curved surface of the curved mobile phone glass cover 1, and the sphere will rotate to reduce frictional loss between the sphere and the curved surface. If a defect or scratch is encountered, it will be fed back to the sphere. The piezoelectric crystal of the second pressure sensor 327 is configured as a cylinder, which can rotate around its own axis. The outer peripheral wall of the cylinder abuts against the side of the curved mobile phone glass cover 1, forming a point contact between the cylinder and the side of the curved mobile phone glass cover 1, resulting in high detection accuracy. When the moving stage 310 slides along the annular track 200, the outer peripheral wall of the cylinder always remains in contact with the side of the curved mobile phone glass cover 1, and the cylinder rotates around its own axis, which can reduce frictional loss between the cylinder and the side. If the side is uneven, it will be fed back to the cylinder. This embodiment can improve the detection accuracy.

[0052] In some embodiments, the number of curved surface detection rods 324 can be one, and the curved surface of the curved mobile phone glass cover plate 1 can be detected by simply using a first pressure sensor 325 to circle around it.

[0053] Reference Figure 5 and Figure 9 As shown, in some embodiments, there are multiple arc surface detection rods 324, which are arranged at intervals along the length of the adjusting rod 322. The arrangement direction of the multiple arc surface detection rods 324 can be understood as... Figure 9As indicated by the arrows, from the side furthest from the curved mobile phone glass cover 1 to the side closest to the curved mobile phone glass cover 1, the height of the lowest position of the multiple first pressure sensors 325 increases sequentially. This allows the positions of the multiple first pressure sensors 325 to better match the curved surface 2 of the curved mobile phone glass cover 1. For example, the height of the lowest position of the spheres (piezoelectric crystals) of the multiple first pressure sensors 325 increases sequentially. Since the spheres are in point contact with the curved surface 2 of the curved mobile phone glass cover 1, this arrangement allows the contact points of the multiple spheres to better cover the curved surface 2, enabling more comprehensive detection of various areas in the curved surface 2 and improving detection accuracy.

[0054] In this embodiment, multiple first pressure sensors 325 contact the curved mobile phone glass cover 1, which can fully cover the curved surface 2 of the curved mobile phone glass cover 1, thereby improving the detection accuracy and ensuring the quality of the curved mobile phone glass cover 1.

[0055] Reference Figure 5 and Figure 9 As shown, in some embodiments, the number of side detection rods 326 can be one, and it is only necessary to use a second pressure sensor 327 to surround the curved mobile phone glass cover 1 to detect whether its side meets the requirements. The side detection rod 326 is located in the arrangement direction of the multiple curved surface detection rods 324, thereby ensuring that the second pressure sensor 327 can always be in contact with the side 3 of the curved mobile phone glass cover 1.

[0056] Reference Figures 1 to 3 As shown, in some embodiments, the curved mobile phone glass cover defect scanning and detection device 1000 further includes a detection stage 600, an annular track 200 is disposed on the detection stage 600, and an annular boss 610 is provided on the detection stage 600. The boss 610 is located on the inner periphery of the annular track 200, and a stepped groove 611 is formed on the inner peripheral wall of the boss 610. The curved mobile phone glass cover 1 is placed in the stepped groove 611. It can be understood that the inner peripheral wall of the boss 610 is a multi-segmented stepped wall surface. The stepped groove 611 is used to match and position multiple curved mobile phone glass covers 1 of different sizes and proportions. It can be understood that the stepped groove 611 includes multiple segments formed by the boss 610. Annular grooves are arranged sequentially from the inner circumference of 0 to the outer circumference of the boss 610. From the inside to the outside, the inner diameter (groove width) of the multiple annular grooves increases sequentially. It can also be understood that the multiple annular grooves are arranged sequentially from top to bottom and from bottom to top, with the inner diameter (groove width) of the multiple annular grooves increasing sequentially. Curved mobile phone glass covers 1 of different sizes are placed in different segments of the annular grooves. The smaller curved mobile phone glass covers 1 are placed in the inner annular groove, and the larger curved mobile phone glass covers 1 are placed in the outer annular groove. The size of the annular grooves matches the size of the corresponding curved mobile phone glass covers 1, thereby achieving the positioning effect.

[0057] In this embodiment, the stepped groove 611 is set to center the curved mobile phone glass cover 1 of different sizes and proportions, which can avoid the impact on subsequent defect detection caused by the curved mobile phone glass cover 1 being placed crookedly.

[0058] In some embodiments, the four corners of the annular track 200 are rounded, and the four corners of the curved mobile phone glass cover 1 are also rounded. Each rounded corner of the annular track 200 and each rounded corner of the corresponding curved mobile phone glass cover 1 are concentrically arranged in a one-to-one correspondence, thereby ensuring that when the moving stage 310 moves along the annular track 200, the first pressure sensor 325 and the second pressure sensor 327 move precisely along the contour of the rounded corner position of the curved mobile phone glass cover 1 without affecting the detection accuracy.

[0059] Reference Figure 2 and Figure 8 As shown, in some embodiments, the adsorption mechanism 100 includes multiple guide connecting columns 110, a negative pressure connecting seat 120, and a negative pressure device. The top of the guide connecting column 110 is provided with a suction nozzle, which is used to adsorb the bottom of the curved mobile phone glass cover 1. The negative pressure connecting seat 120 is located below the guide connecting column 110. The multiple guide connecting columns 110 are connected to the negative pressure device through the negative pressure connecting seat 120. The curved mobile phone glass cover defect scanning and detection device 1000 also includes a lifting mechanism 700. The driving end of the lifting mechanism 700 is connected to the bottom end of the negative pressure connecting seat 120, thereby driving the negative pressure connecting seat 120 to perform lifting and lowering movements. The lifting mechanism 700 can be set as a cylinder.

[0060] After the curved mobile phone glass cover 1 is placed in the stepped groove 611 of the boss 610, the lifting mechanism 700 drives the negative pressure connecting seat 120 to rise. The negative pressure connecting seat 120 drives multiple guide connecting columns 110 to rise. During this process, the multiple guide connecting columns 110 pass through the center of the boss 610. The suction nozzle at the top of the guide connecting column 110 contacts the bottom of the curved mobile phone glass cover 1 and lifts the curved mobile phone glass cover 1 upward. Then the negative pressure device draws negative pressure, so that the suction nozzle tightly suctions the curved mobile phone glass cover 1. Compared with the clamping fixing method, this embodiment uses the suction nozzle to adsorb the curved mobile phone glass cover 1, which does not damage its structure, thereby maintaining a non-destructive fixing effect.

[0061] Reference Figure 5 As shown, in some embodiments, the movable block 323 includes a slider 3231 and a fastening block 3232. The slider 3231 and the fastening block 3232 define the aforementioned mounting groove 3233. The slider 3231 and the fastening block 3232 are locked together by fasteners (e.g., bolts) to lock the arc surface detection rod 324 and the side detection rod 326.

[0062] Reference Figures 4 to 6 as well as Figure 12As shown, in some embodiments, the detection mechanism 300 further includes a bottom detection component 400. The bottom detection component 400 includes a fixed rod 410, a bottom surface detection rod 420, an elastic sleeve 430, and a rotary encoder 440. The fixed rod 410 is connected to the moving stage 310 and is horizontally positioned below the curved mobile phone glass cover 1. The bottom surface detection rod 420 is parallel to the fixed rod 410 and is connected to the elastic sleeve 430. The elastic sleeve 430 is fixedly sleeved on the outer periphery of the fixed rod 410. The outer peripheral wall of the bottom surface detection rod 420 is configured to abut against the bottom surface of the curved mobile phone glass cover 1. The elastic sleeve 430 is made of a flexible material and can deform and rotate relative to the fixed rod 410. The rotary encoder 440 can be understood as an angle sensor. The detection end of the rotary encoder 440 is connected to the elastic sleeve 430, and the rotary encoder 440 is used to detect whether the elastic sleeve 430 rotates relative to the fixed rod 410.

[0063] During the inspection process, the curved mobile phone glass cover 1 is lifted by the lifting mechanism 700. The bottom detection rod 420 is located at the bottom of the curved mobile phone glass cover 1. Under the slight elastic action of the elastic sleeve 430, the bottom detection rod 420 remains in contact with the bottom surface of the curved mobile phone glass cover 1. The moving stage 310 drives the bottom detection component 400 to circle the curved mobile phone glass cover 1. If a defect is encountered, it will be fed back to the bottom detection rod 420, causing the bottom detection rod 420 to move slightly up and down. This can also be understood as the bottom detection rod 420 rotating slightly relative to the fixed rod 410. At this time, the elastic sleeve 430 will deform and rotate slightly relative to the fixed rod 410. The rotary encoder 440 can detect the rotation of the elastic sleeve 430, thereby determining whether there is a defect on the bottom surface of the curved mobile phone glass cover 1.

[0064] Reference Figure 5 , Figure 6 and Figure 9As shown, in some embodiments, the curved mobile phone glass cover 1 is made of a transparent material that allows light to pass through. The detection mechanism 300 also includes a camera module and a light-emitting component 510. The camera module is connected to the moving stage 310 and is located above the curved mobile phone glass cover 1. The camera module can be connected to the moving stage 310 via an extension rod 321. The light-emitting component 510 is connected to the moving stage 310 and is located below the curved mobile phone glass cover 1. The light-emitting component 510 can be connected to the moving stage 310 via a fixing rod 410. The moving stage 310 can move the light-emitting component 510 together. The light-emitting component 510 is located directly below the curved surface of the curved mobile phone glass cover 1 and is used to emit light upwards. The component 510 has a light-shielding light 511 in the light-emitting direction. The light-shielding light 511 can be a line or a rod-shaped structure. The light-shielding light 511 is parallel to the axis of the fixed rod 410. The light emitted by the light-emitting component 510 first passes through the light-shielding light 511 and then through the curved mobile phone glass cover 1. The light-shielding light 511 can block part of the light emitted by the light-emitting component 510. The camera module is used to receive the light emitted by the light-emitting component 510. The light-shielding light 511 will form a shadow line in the image of the camera module. The shadow line can be detected by relevant image algorithms to determine whether there is a defect in the cover. For example, the light-shielding light 511 can be set as a straight line, spanning the curved surface of the curved mobile phone glass cover 1, that is, along... Figure 9 The arrangement direction is such that the length of the light-shielding light 511 is greater than the length of the curved surface 2. The light-shielding light 511 can cover the curved surface 2 well. Since the light passes through the curved mobile phone glass cover 1, when the curved mobile phone glass cover 1 is deformed, the shadow line formed by the light-shielding light 511 may be relatively curved in the image. During the movement of the light-emitting component 510, by observing whether this shadow line is deformed, it can be known whether the curved surface 2 of the mobile phone glass cover 1 has defects.

[0065] Reference Figure 5 , Figure 4 As shown, in some embodiments, the top of the mobile stage 310 is provided with a display screen 311. The display screen 311 can be used to display the imaging parameters of the camera module or the detection result parameters of the detection mechanism 300. It can display the current detection status, such as whether there is an abnormality, where the abnormality is located, and what the abnormality parameter is. For example, the display screen 311 can display real-time detection images, thereby integrating the comprehensive detection functions of this device and presenting them in a summary manner.

[0066] This embodiment can be understood as using non-contact means (optical means) to detect defects in the curved mobile phone glass cover 1. It can be combined with the above-mentioned curved edge detection component 320 and bottom detection component 400 to use contact means to detect defects in the curved mobile phone glass cover 1. That is, the non-contact means are combined with the contact means. In one circling motion, multiple defects can be detected, making the detection more comprehensive and the detection accuracy better.

[0067] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, inside, outside, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0068] In the description of this invention, the use of "first" and "second" is for the purpose of distinguishing technical features only, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0069] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0070] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for scanning and detecting defects in curved mobile phone glass covers, characterized in that, include: Circular track; An adsorption mechanism is located on the inner circumference of the annular track and is used to fix and adsorb the curved mobile phone glass cover. The detection mechanism includes a movable stage and an arc-shaped edge detection assembly connected to each other. The annular track has a drive unit for driving the movable stage to slide along the annular track. The arc-shaped edge detection assembly includes an extension rod, an adjusting rod, a moving block, an arc-shaped surface detection rod, and a side detection rod. The extension rod has a cavity, and the moving block is located within the cavity. The adjusting rod extends horizontally and passes through the cavity. The moving block is threadedly connected to the adjusting rod. When the adjusting rod rotates, the moving block moves horizontally along the adjusting rod. Both the arc-shaped surface detection rod and the side detection rod are locked to the moving block by fasteners. When the fasteners are released, both the arc-shaped surface detection rod and the side detection rod can slide up and down relative to the moving block. The bottom of the arc-shaped surface detection rod has a first pressure sensor configured to abut against the arc surface of the arc-shaped mobile phone glass cover. The bottom of the side detection rod has a second pressure sensor configured to abut against the side of the arc-shaped mobile phone glass cover.

2. The arc-shaped mobile phone glass cover defect scanning and detection device according to claim 1, characterized in that, The first pressure sensor and the second pressure sensor are configured as piezoelectric sensors. The piezoelectric crystal of the first pressure sensor is configured as a rotatable sphere, which is used to abut against the arc surface of the curved mobile phone glass cover. The piezoelectric crystal of the second pressure sensor is configured as a cylinder that can rotate about its own axis, and the outer peripheral wall of the cylinder abuts against the side of the curved mobile phone glass cover.

3. The arc-shaped mobile phone glass cover defect scanning and detection device according to claim 2, characterized in that, The number of the arc surface detection rods is multiple, and the multiple arc surface detection rods are arranged at intervals along the length direction of the adjusting rod. Along the arrangement direction of the multiple arc surface detection rods, from the side away from the arc-shaped mobile phone glass cover to the side closer to the arc-shaped mobile phone glass cover, the height of the lowest position of the multiple spheres increases sequentially to adapt to the arc surface of the arc-shaped mobile phone glass cover.

4. The arc-shaped mobile phone glass cover defect scanning and detection device according to claim 1, characterized in that, The movable block includes a slider and a fastening block, with a mounting groove defined between the slider and the fastening block. The arc surface detection rod and the side detection rod are installed in the mounting groove, and the slider and the fastening block are locked together by the fastener.

5. The arc-shaped mobile phone glass cover defect scanning and detection device according to claim 1, characterized in that, The detection mechanism further includes a bottom detection component, which comprises a fixed rod, a bottom surface detection rod, an elastic sleeve, and a rotary encoder. The fixed rod is connected to the moving stage and is horizontally positioned below the curved mobile phone glass cover. The bottom surface detection rod is parallel to the fixed rod and connected to the elastic sleeve. The elastic sleeve is fixedly fitted around the outer periphery of the fixed rod. The outer peripheral wall of the bottom surface detection rod is configured to abut against the bottom surface of the curved mobile phone glass cover. The elastic sleeve is capable of deformation and rotation relative to the fixed rod. The rotary encoder is used to detect whether the elastic sleeve rotates relative to the fixed rod.

6. The arc-shaped mobile phone glass cover defect scanning and detection device according to claim 1, characterized in that, The detection mechanism also includes a camera module and a light-emitting component. The camera module is connected to the mobile platform and located above the curved mobile phone glass cover. The light-emitting component is connected to the mobile platform and located directly below the curved surface of the curved mobile phone glass cover. The light-emitting component is used to emit light upwards. A light-shielding light is provided in the light-emitting direction of the light-emitting component. The camera module is used to receive the light emitted by the light-emitting component.

7. The arc-shaped mobile phone glass cover defect scanning and detection device according to claim 6, characterized in that, The mobile platform is equipped with a display screen on its top, which is used to display the imaging of the camera module or the detection result parameters of the detection mechanism.

8. The arc-shaped mobile phone glass cover defect scanning and detection device according to claim 1, characterized in that, The curved mobile phone glass cover defect scanning and detection device also includes a detection platform. The annular track is set on the detection platform. The detection platform is provided with an annular boss. The inner peripheral wall of the boss is formed with a stepped groove. The curved mobile phone glass cover is placed in the stepped groove. The stepped groove is used to match and position multiple curved mobile phone glass covers of different sizes.

9. The arc-shaped mobile phone glass cover defect scanning and detection device according to claim 8, characterized in that, The curved mobile phone glass cover defect scanning and detection device also includes a lifting mechanism, which is used to drive the adsorption mechanism to perform lifting and lowering movements.

10. The arc-shaped mobile phone glass cover defect scanning and detection device according to claim 9, characterized in that, The adsorption mechanism includes multiple guide connecting columns, a negative pressure connecting seat, and a negative pressure device. The top of the guide connecting column is provided with a suction nozzle, which is used to adsorb the bottom of the curved mobile phone glass cover. The negative pressure connecting seat is located below the guide connecting column. The multiple guide connecting columns are connected to the negative pressure device through the negative pressure connecting seat. The driving end of the lifting mechanism is connected to the bottom end of the negative pressure connecting seat.

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