An optical detection device for a mobile phone glass cover plate

Abstract

The present invention belongs to the technical field of glass cover plate detection, and particularly relates to an optical detection device for mobile phone glass cover plates, comprising: a detection platform, on the upper end of which a moving plate is slidably connected in the horizontal direction; a clamping mechanism, arranged above the moving plate and used for clamping and fixing the glass cover plate to be detected; a detection mechanism, used for comprehensively detecting the glass cover plate, the detection mechanism comprising two L-shaped rods fixedly connected to the upper end of the detection platform, a guide rail fixedly connected between the two L-shaped rods, and a detection block slidably connected in the guide rail. By setting the detection mechanism, in the detection process, through the staggered movement of two triangular plates, the detection block is driven to displace towards both sides in the guide rail, so that the field of view ranges detected by the light source generator and the optical receiver below the detection block are larger, and the detection of large-sized glass cover plates can be comprehensively covered at one time.

Description

Technical Field

[0001] The present invention belongs to the technical field of glass cover plate detection, and in particular relates to an optical detection device for mobile phone glass cover plates. Background Art

[0002] A mobile phone glass cover plate is the outermost protective glass of a smartphone screen and is often referred to as a "screen protection glass". It is mainly located on the outermost layer of the mobile phone display screen and undertakes the function of protecting the internal display screen from external physical damage. During the production process of mobile phone glass cover plates, optical detection is required to identify whether there are defects, bubbles or other factors affecting transparency on the surface of the mobile phone glass cover plates, improve the production quality of mobile phone glass cover plates, ensure that each product can meet high standards and meet the needs of consumers.

[0003] However, for existing optical detection devices, such as an optical detection device for glass cover plates disclosed in a patent document with Chinese Publication No. CN212808110U, when detecting a mobile phone glass cover plate, a light source generator and an optical receiver are required. Among them, the light source generator is usually an infrared laser light source, and the optical receiver is usually a photodiode. Therefore, the following technical problems will exist:

[0004] During the detection process, the light source generator and the optical receiver are usually fixed in one place and cannot move, resulting in a fixed and inconvenient field of view for optical detection. For relatively large glass cover plates, it may not be possible to fully cover the detection at one time and multiple scans or mosaics are required, increasing the operation complexity and error;

[0005] During the detection process, impurities such as dust in the air easily fall on the surface of the mobile phone glass cover plate, causing local light scattering or occlusion. They will be misidentified as defects, increasing the false alarm rate, or covering up actual existing defects, resulting in missed detections, and thus significantly affecting the optical detection results and seriously interfering with the accuracy of the detection. Summary of the Invention

[0006] The purpose of the present invention is to solve the problems raised in the above background art, and provide an optical detection device for mobile phone glass cover plates that can make the field of view for detecting the light source generator and the optical receiver below the detection block larger, and at the same time accelerate the air flow speed at the detection position, so that dust in the air at the detection position is not likely to fall on the surface of the mobile phone glass cover plate.

[0007] To achieve the above purpose, the present invention adopts the following technical solutions:

[0008] An optical detection device for mobile phone glass cover plates, comprising:

[0009] A detection platform, on the upper end of which a moving plate is slidably connected in the horizontal direction;

[0010] A clamping mechanism is arranged above the moving plate and is used to clamp and fix the glass cover plate to be detected.

[0011] A detection mechanism is used to comprehensively detect the glass cover plate. The detection mechanism includes two L-shaped rods fixedly connected to the upper end of the detection platform. A guide rail is fixedly connected between the two L-shaped rods. A detection block is slidably connected in the guide rail. A light source generator and an optical receiver are symmetrically arranged at the lower end of the detection block. A guide rod is fixedly connected to the upper end of the detection block. A guide wheel is fixedly connected to the part of the guide rod extending above the guide rail. Two triangular plates are slidably connected in the vertical direction above the guide rail.

[0012] Preferably, one of the triangular plates is embedded in the other triangular plate, and the guide wheel is in rolling contact with any one of the triangular plates.

[0013] Preferably, a Z-shaped mounting plate is fixedly connected to the upper end of the detection platform. A dust suction mechanism is arranged on the Z-shaped mounting plate and is used to prevent dust from falling on the glass cover plate during the detection process. The dust suction mechanism includes an air storage cylinder slidably connected to the side wall of the Z-shaped mounting plate in the vertical direction. A piston plate is hermetically slidably connected to the inner wall of the air storage cylinder. Connecting rods are fixedly connected above the two triangular plates. The two connecting rods are respectively fixedly connected to the piston plate and the air storage cylinder. A baffle is fixedly connected to the upper end of the Z-shaped mounting plate. A first spring is arranged between the air storage cylinder and the baffle. A second spring is arranged between the piston plate and the inner top wall of the air storage cylinder. An air extraction pipe and an exhaust pipe are fixedly communicated with the side wall of the air storage cylinder far away from the Z-shaped mounting plate. Check valves are arranged inside the air extraction pipe and the exhaust pipe.

[0014] Preferably, the lower end of the air extraction pipe is fixedly communicated with a dust suction pipe. A plurality of dust suction nozzles distributed in a linear array are fixedly communicated with the side wall of the dust suction pipe close to the detection block.

[0015] Preferably, a driving mechanism is arranged on the Z-shaped mounting plate and is used to drive the detection mechanism and the dust suction mechanism to work synchronously. The driving mechanism includes a first transmission rod rotatably connected to the Z-shaped mounting plate. A first gear is fixedly connected to the first transmission rod. A first rack is fixedly connected between the triangular plate and the connecting rod. The two first racks are respectively meshed with both sides of the first gear. A driving rod is rotatably connected to the side wall of the Z-shaped mounting plate. A first motor for driving the driving rod is fixedly connected to the side wall of the Z-shaped mounting plate far away from the driving rod. An arc-shaped tooth groove is fixedly connected to the driving rod. A second gear meshed with the arc-shaped tooth groove is fixedly connected to the first transmission rod.

[0016] Preferably, the clamping mechanism includes two support plates fixedly connected to the upper end of the moving plate. A two-way screw cylinder is rotatably connected between the two support plates. A second motor for driving the two-way screw cylinder is fixedly connected to the side wall of one of the support plates. Threads with opposite spiral directions are provided on the two rod bodies of the two-way screw cylinder. Sliding plates are in threaded fit with the two threaded portions of the two-way screw cylinder respectively. The sliding plates are slidably connected to the upper wall of the moving plate in the horizontal direction. A support platform is fixedly connected to the central position of the moving plate. A hydraulic telescopic rod is fixedly connected to the side of the sliding plate close to the support platform. A clamping plate is fixedly connected to the telescopic end of the hydraulic telescopic rod. A third spring is provided between the sliding plate and the clamping plate.

[0017] Preferably, a reinforcement mechanism controlled by the clamping mechanism is further provided at the upper end of the moving plate for reinforcing the glass cover plate before complete clamping. The reinforcement mechanism includes a suction groove opened at the upper end of the support platform. A lifting plate is hermetically slidably connected to the inner wall of the suction groove. A hydraulic cavity is provided in the support platform at a position below the suction groove. A lifting block is hermetically slidably connected in the hydraulic cavity. A fixed rod is fixedly connected between the lifting block and the lifting plate. A liquid infusion hose is fixedly connected and communicated between the inside of the hydraulic telescopic rod and the inside of the hydraulic cavity. Hydraulic oil is filled between the inside of the hydraulic telescopic rod, the space above the lifting block inside the hydraulic cavity, and the liquid infusion hose.

[0018] Preferably, an automatic feeding mechanism is provided between the driving mechanism and the moving plate for automatically displacing the glass cover plate forward by a preset feeding distance after the detection is completed. The automatic feeding mechanism includes a second transmission rod rotatably connected through the Z-shaped mounting plate. A third gear meshing with the arc-shaped tooth groove is fixedly connected to the second transmission rod. A rotating rod is rotatably connected to the side wall of the Z-shaped mounting plate through a mounting block. Bevel gears meshing with each other are fixedly connected to the ends of the rotating rod and the second transmission rod close to each other. A feeding gear is fixedly connected to the bottom end of the rotating rod. A feeding rack meshing with the feeding gear is fixedly connected to the upper end of the moving plate.

[0019] Compared with the prior art, the advantages of this optical detection device for mobile phone glass cover plates are as follows:

[0020] 1. By setting the detection mechanism, during the detection process, through the staggered movement of the two triangular plates, the two triangular plates alternately contact the guide wheels and push the guide wheels to slide alternately to both sides, thereby driving the detection block to displace to both sides in the guide rail, making the detection field of view of the light source generator and the optical receiver below the detection block larger, enabling the detection of a larger-sized glass cover plate to be fully covered at one time, reducing the operation complexity and error.

[0021] 2. By providing a dust suction mechanism, during the detection process, the air storage cylinder and the piston plate move synchronously with the two triangular plates, so that the piston plate makes reciprocating vertical displacement relative to the air storage cylinder. The air at the detection position is pumped into the air storage cylinder through the air extraction pipeline, and the air in the air storage cylinder is discharged through the exhaust pipeline, accelerating the air flow speed at the detection position, making it difficult for the dust in the air at the detection position to fall on the surface of the mobile phone glass cover plate, avoiding local light scattering or occlusion, and improving the accuracy of the detection of the mobile phone glass cover plate.

[0022] 3. By providing a clamping mechanism, before the detection, the mobile phone glass cover plate is placed on the support table, and then the second motor is driven to rotate the bidirectional lead screw cylinder, so that the two sliding plates approach each other, further driving the two clamping plates to approach each other until the third spring is compressed to the point where it cannot be compressed. At this time, the two clamping plates tightly abut against the two side walls of the mobile phone glass cover plate, preventing the mobile phone glass cover plate from shaking during the detection process and improving the accuracy of the optical detection.

[0023] 4. By providing a reinforcement mechanism, the mobile phone glass cover plate is horizontally placed on the support table. Before the two clamping plates approach each other and completely clamp the glass cover plate, the hydraulic telescopic rod contracts, so that the hydraulic oil inside the hydraulic telescopic rod is transported to the hydraulic cavity through the infusion hose, enabling the lifting block to drive the lifting plate to displace downward. The space between the lifting plate and the glass cover plate in the adsorption groove increases, the air pressure decreases, and the glass cover plate is firmly adsorbed on the support table, further improving the fixing effect on the glass cover plate.

[0024] 5. By providing a driving mechanism and an automatic feeding mechanism, after each detection work is completed, the arc-shaped tooth groove meshes with the third gear, and the rotating rod is driven to rotate through the second transmission rod and the bevel gear, so that the feeding gear rotates a certain angle, enabling the feeding rack to drive the moving plate to displace forward a certain distance. After each detection is completed, the glass cover plate is automatically displaced forward a certain distance to achieve the feeding of the glass cover plate, improving the automation degree during the detection process. It is not only convenient for a comprehensive optical detection of the glass cover plate but also greatly improves the detection efficiency and reduces the workload of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0026] Figure 2 is a partial cross-sectional view of the moving plate in the present invention;

[0027] Figure 3 is a partial structural schematic diagram of the detection mechanism in the present invention;

[0028] Figure 4 is a partial structural schematic diagram of the dust suction mechanism in the present invention;

[0029] Figure 5 It is a partial structural schematic diagram of the automatic feeding mechanism in the present invention.

[0030] In the figure: 1. Detection platform; 11. Moving plate; 12. Z-shaped mounting plate; 2. Clamping mechanism; 21. Support plate; 22. Bi-directional lead screw cylinder; 23. Second motor; 24. Slide plate; 25. Support table; 26. Hydraulic telescopic rod; 27. Clamping plate; 28. Third spring; 3. Detection mechanism; 31. L-shaped rod; 32. Guide rail; 33. Detection block; 34. Light source generator; 35. Optical receiver; 36. Guide rod; 37. Guide wheel; 38. Triangular plate; 4. Dust suction mechanism; 41. Air storage cylinder; 42. Piston plate; 43. Connecting rod; 44. Baffle; 45. First spring; 46. Second spring; 47. Air extraction pipeline; 48. Exhaust pipeline; 49. Dust suction pipeline; 5. Driving mechanism; 51. First transmission rod; 52. First gear; 53. First rack; 54. Driving rod; 55. First motor; 56. Arc-shaped tooth groove; 57. Second gear; 6. Reinforcement mechanism; 61. Adsorption groove; 62. Lifting plate; 63. Hydraulic cavity; 64. Lifting block; 65. Fixed rod; 66. Infusion hose; 7. Automatic feeding mechanism; 71. Second transmission rod; 72. Third gear; 73. Rotating rod; 74. Bevel gear; 75. Feeding gear; 76. Feeding rack. Specific embodiments

[0031] The following embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0032] Embodiment: Refer to Figures 1 to 5 , a mobile phone glass cover optical detection device, comprising:

[0033] A detection platform 1, on the upper end of which a moving plate 11 is slidably connected along the horizontal direction;

[0034] A clamping mechanism 2, arranged above the moving plate 11 and used for clamping and fixing the glass cover to be detected;

[0035] A detection mechanism 3, used for comprehensively detecting the glass cover. The detection mechanism 3 includes two L-shaped rods 31 fixedly connected to the upper end of the detection platform 1. A guide rail 32 is fixedly connected between the two L-shaped rods 31. A detection block 33 is slidably connected in the guide rail 32. A light source generator 34 and an optical receiver 35 are symmetrically arranged at the lower end of the detection block 33. A guide rod 36 is fixedly connected to the upper end of the detection block 33. A part of the guide rod 36 extending above the guide rail 32 is fixedly connected with a guide wheel 37. Two triangular plates 38 are slidably connected along the vertical direction above the guide rail 32;

[0036] Specifically, one triangular plate 38 is embedded in the other triangular plate 38, and the guide wheel 37 rolls when it contacts any one of the triangular plates 38.

[0037] Specifically, during the detection process, the light source generator 34 can irradiate the light source on the mobile phone glass cover plate, and make the reflected light irradiate on the optical receiver 35. The mobile phone glass cover plate is detected through the optical signal received and converted by the optical receiver 35. Among them, the light source generator is an infrared laser light source, and the optical receiver is a photodiode. Through the symmetrically arranged light source generator and optical receiver, the light emitted by the infrared laser light source can be received by the photodiode after being refracted by the mobile phone glass cover plate. The photodiode converts the optical signal into a voltage signal, thereby detecting surface defects, cracks, bubbles or unevenness of the mobile phone glass cover plate.

[0038] Specifically, a strip-shaped limiting groove is opened at the upper end of the guide rail 32, and the guide rod 36 extends above the guide rail 32 through the strip-shaped limiting groove, and the guide rod 36 is slidably connected to the inner wall of the strip-shaped limiting groove.

[0039] Aiming at the problem that in the prior art, the light source generator and the optical receiver are usually fixed in one place and cannot move, resulting in the fact that the field of view of their optical detection is often fixed and inconvenient. For a large-sized glass cover plate, it may not be possible to fully cover the detection at one time, and multiple scans or splicings are required, increasing the operation complexity and error. In the present invention, by setting the detection mechanism 3, during the detection process, through the staggered movement of the two triangular plates 38, the two triangular plates 38 alternately contact the guide wheel 37, and push the guide wheel 37 to slide alternately to both sides, thereby driving the detection block 33 to displace to both sides in the guide rail 32, so that the field of view of the light source generator 34 and the optical receiver 35 below the detection block 33 is larger, and a large-sized glass cover plate can be fully covered and detected at one time, reducing the operation complexity and error.

[0040] A Z-shaped mounting plate 12 is fixedly connected to the upper end of the detection platform 1. A dust suction mechanism 4 is provided on the Z-shaped mounting plate 12 for preventing dust from falling on the glass cover plate during the detection process. The dust suction mechanism 4 includes an air storage cylinder 41 slidably connected to the side wall of the Z-shaped mounting plate 12 in the vertical direction. A piston plate 42 is hermetically slidably connected to the inner wall of the air storage cylinder 41. Connecting rods 43 are fixedly connected above the two triangular plates 38. The two connecting rods 43 are respectively fixedly connected to the piston plate 42 and the air storage cylinder 41. A baffle 44 is fixedly connected to the upper end of the Z-shaped mounting plate 12. A first spring 45 is provided between the air storage cylinder 41 and the baffle 44. A second spring 46 is provided between the piston plate 42 and the inner top wall of the air storage cylinder 41. An air extraction pipe 47 and an exhaust pipe 48 are fixedly communicated with the side wall of the air storage cylinder 41 away from the Z-shaped mounting plate 12. Check valves are provided inside the air extraction pipe 47 and the exhaust pipe 48.

[0041] Specifically, due to the setting of the one-way valve, when the piston plate 42 moves upward relative to the air storage cylinder 41, only the air at the detection position can be pumped into the air storage cylinder 41 through the air extraction pipeline 47. When the piston plate 42 moves downward relative to the air storage cylinder 41, only the air in the air storage cylinder 41 can be pumped out to the outside through the exhaust pipeline 48, which accelerates the air flow velocity at the detection position and slows down the falling of dust in the air.

[0042] Specifically, the lower end of the air extraction pipeline 47 is fixedly connected with a dust suction pipeline 49, and a plurality of dust suction nozzles distributed in a linear array are fixedly connected to one side wall of the dust suction pipeline 49 close to the detection block 33.

[0043] Aiming at the problem in the prior art that impurities such as dust in the air easily fall on the surface of the mobile phone glass cover plate, causing local light scattering or occlusion, they will be misidentified as defects, increasing the false alarm rate, or covering up the actually existing defects, resulting in missed detection, and then significantly affecting the optical detection result and seriously interfering with the detection accuracy. The present invention sets up a dust suction mechanism 4. During the detection process, the air storage cylinder 41 and the piston plate 42 move synchronously with the two triangular plates 38, so that the piston plate 42 makes a reciprocating vertical displacement relative to the air storage cylinder 41. When the piston plate 42 moves upward relative to the air storage cylinder 41, the air at the detection position is pumped into the air storage cylinder 41 through the air extraction pipeline 47. When the piston plate 42 moves downward relative to the air storage cylinder 41 under the elastic force of the first spring 45 and the second spring 46, the air in the air storage cylinder 41 is discharged through the exhaust pipeline 48. Thus, during each detection process, the air at the detection position can be aspirated, accelerating the air flow velocity at the detection position, making the dust in the air at the detection position not easily fall on the surface of the mobile phone glass cover plate, avoiding local light scattering or occlusion, improving the accuracy of the detection of the mobile phone glass cover plate. At the same time, since the two triangular plates 38 move alternately, the relative displacement amount between the air storage cylinder 41 and the piston plate 42 is large, ensuring the air suction efficiency, thereby ensuring the acceleration degree of the air flow velocity at the detection position and further reducing the possibility of dust in the air falling on the glass cover plate.

[0044] A driving mechanism 5 is provided on the Z-shaped mounting plate 12 for driving the detection mechanism 3 and the dust suction mechanism 4 to work synchronously. The driving mechanism 5 includes a first transmission rod 51 rotatably connected to the Z-shaped mounting plate 12. A first gear 52 is fixedly connected to the first transmission rod 51. A first rack 53 is fixedly connected between the triangular plate 38 and the connecting rod 43. The two first racks 53 are respectively engaged with both sides of the first gear 52. A driving rod 54 is rotatably connected to the side wall of the Z-shaped mounting plate 12. A first motor 55 for driving the driving rod 54 is fixedly connected to the side wall of the Z-shaped mounting plate 12 away from the driving rod 54. An arc-shaped tooth groove 56 is fixedly connected to the driving rod 54. A second gear 57 engaged with the arc-shaped tooth groove 56 is fixedly connected to the first transmission rod 51.

[0045] The clamping mechanism 2 includes two support plates 21 fixedly connected to the upper end of the moving plate 11. A bidirectional lead screw cylinder 22 is rotatably connected between the two support plates 21. A second motor 23 for driving the bidirectional lead screw cylinder 22 is fixedly connected to the side wall of one of the support plates 21. Threads with opposite spiral directions are provided on both rod bodies of the bidirectional lead screw cylinder 22. Slide plates 24 are in threaded cooperation with the threads on both sides of the bidirectional lead screw cylinder 22. The slide plates 24 are slidably connected to the upper wall of the moving plate 11 in the horizontal direction. A support platform 25 is fixedly connected to the central position of the moving plate 11. A hydraulic expansion and contraction rod 26 is fixedly connected to the side of the slide plate 24 close to the support platform 25. A clamping plate 27 is fixedly connected to the end of the hydraulic expansion and contraction rod 26 close to the support platform 25. A third spring 28 is provided between the slide plate 24 and the clamping plate 27.

[0046] Specifically, since the slide plate 24 is slidably connected to the upper wall of the moving plate 11 in the horizontal direction, when the bidirectional lead screw cylinder 22 rotates, it will not drive the slide plate 24 to rotate, avoiding movement interference.

[0047] To prevent the mobile phone glass cover plate from shaking during the detection process, the present invention is provided with a clamping mechanism 2. Before detection, the mobile phone glass cover plate is placed on the support platform 25. Subsequently, the second motor 23 drives the bidirectional lead screw cylinder 22 to rotate, so that the two slide plates 24 approach each other, further driving the two clamping plates 27 to approach each other until the third spring 28 is compressed to the maximum extent. At this time, the two clamping plates 27 tightly abut against both side walls of the mobile phone glass cover plate, preventing the mobile phone glass cover plate from shaking during the detection process, and preventing the voltage signal fed back by the photodiode from being different from the surface of the mobile phone glass cover plate due to shaking during detection, improving the accuracy of optical detection.

[0048] The upper end of the moving plate 11 is also provided with a reinforcement mechanism 6 controlled by the clamping mechanism 2, which is used to reinforce the glass cover plate before complete clamping. The reinforcement mechanism 6 includes a suction groove 61 opened at the upper end of the support table 25. The inner wall of the suction groove 61 is hermetically and slidably connected with a lifting plate 62. A hydraulic chamber 63 is arranged in the support table 25 below the suction groove 61. A lifting block 64 is hermetically and slidably connected in the hydraulic chamber 63. A fixing rod 65 is fixedly connected between the lifting block 64 and the lifting plate 62. A liquid infusion hose 66 is fixedly connected between the inside of the hydraulic telescopic rod 26 and the inside of the hydraulic chamber 63. Hydraulic oil is filled between the inside of the hydraulic telescopic rod 26, the space above the lifting block 64 inside the hydraulic chamber 63, and the liquid infusion hose 66.

[0049] To further improve the stability of the mobile phone glass cover plate during the detection process, the present invention sets a reinforcement mechanism 6. Before the two clamping plates 27 approach each other and completely clamp the glass cover plate, during the compression process of the third spring 28, the two clamping plates 27 will first squeeze the hydraulic telescopic rod 26, causing the hydraulic telescopic rod 26 to contract. As a result, the hydraulic oil inside the hydraulic telescopic rod 26 is conveyed into the hydraulic chamber 63 through the liquid infusion hose 66, enabling the lifting block 64 inside the hydraulic chamber 63 to move downward, further driving the lifting plate 62 to move downward. Thus, the space between the lifting plate 62 and the glass cover plate in the suction groove 61 increases, and the air pressure decreases. At this time, due to the air pressure difference between the suction groove 61 and the external atmospheric pressure, the glass cover plate can be firmly adsorbed on the support table 25, further improving the fixing effect on the glass cover plate. At the same time, since the mobile phone glass cover plate is usually smooth, it is ensured that the mobile phone glass cover plate can be fixed on the support table by negative pressure adsorption.

[0050] An automatic feeding mechanism 7 is arranged between the driving mechanism 5 and the moving plate 11, which is used to automatically displace the glass cover plate forward by a preset feeding distance after the detection is completed. The automatic feeding mechanism 7 includes a second transmission rod 71 rotatably connected through the Z-shaped mounting plate 12. A third gear 72 meshing with the arc-shaped tooth groove 56 is fixedly connected to the second transmission rod 71. A rotating rod 73 is rotatably connected to the side wall of the Z-shaped mounting plate 12 through a mounting block. Bevel gears 74 meshing with each other are fixedly connected to the ends of the rotating rod 73 and the second transmission rod 71 close to each other. A feeding gear 75 is fixedly connected to the bottom end of the rotating rod 73. A feeding rack 76 meshing with the feeding gear 75 is fixedly connected to the upper end of the moving plate 11.

[0051] In order to improve the degree of automation of mobile phone glass cover detection, the present invention is provided with a driving mechanism 5 and an automatic feeding mechanism 7. During the detection process, when the first motor 55 drives the driving rod 54 to rotate, the arcuate tooth groove 56 is engaged with the second gear 57 and the third gear 72 in turn. When the arcuate tooth groove 56 is engaged with the second gear 57, the first transmission rod 51 is driven to rotate, and the two triangular plates 38 are further made to staggered through the first gear 52 and the first rack 53. When the arcuate tooth groove 56 is no longer engaged with the second gear 57, the two triangular plates 38 are reset by reverse staggered motion under the elastic force of the first spring 45 and the second spring 46. Specifically, when the two triangular plates 38 are in the initial state, the triangular plate 38 on the right is at the lowest end, thereby driving the detection block 38 through the guide wheel 37. 3 is located at the rightmost side of the guide rail 32, so that the detection block 33 can move from one side to the other side along the guide rail 32, and move back to the original position from the other side to complete a reciprocating detection of the glass cover plate. After the detection work is completed, the arc tooth groove 56 is meshed with the third gear 72, and the rotating rod 73 is driven to rotate through the second transmission rod 71 and the bevel gear 74, so that the feeding gear 75 rotates a certain angle, so that the feeding rack 76 can drive the moving plate 11 to move forward a certain distance, so that after each detection is completed, the moving plate 11 and the glass cover plate thereon are automatically moved forward a certain distance to realize the feeding of the glass cover plate, thereby improving the degree of automation in the detection process, not only facilitating the comprehensive optical detection of the glass cover plate, but also greatly improving the detection efficiency and reducing the workload of the staff.

[0052] The present invention can be explained by the following operation mode:

[0053] Before the test, the mobile phone glass cover is placed on the support platform 25, and then the second motor 23 drives the bidirectional wire cylinder 22 to rotate, so that the two slide plates 24 are close to each other, and further drive the two clamping plates 27 to be close to each other, until the third spring 28 is compressed to the point where it cannot be compressed. At this time, the two clamping plates 27 are tightly against the two side walls of the mobile phone glass cover. During the compression of the third spring 28, the two clamping plates 27 first contract the hydraulic telescopic rod 26, and deliver the hydraulic oil to the hydraulic chamber 63, so that the lifting block 64 can drive the lifting plate 62 to move downward, thereby increasing the space between the lifting plate 62 and the glass cover in the adsorption groove 61, reducing the air pressure, and firmly adsorbing the glass cover on the support platform 25 under the action of the air pressure difference;

[0054] During the detection process, when the first motor 55 drives the drive rod 54 to rotate, the arc-shaped tooth groove 56 meshes with the second gear 57 and the third gear 72 alternately. When the arc-shaped tooth groove 56 meshes with the second gear 57, it will drive the first transmission rod 51 to rotate, and further through the first gear 52 and the first rack 53, the two triangular plates 38 will perform an interleaved movement, so that the left triangular plate 38 moves downward, and the right triangular plate 38 moves upward. By the contact of the left triangular plate 38 with the guide wheel 37, the detection block 33 can move leftward along the guide rail 32. When the arc-shaped tooth groove 56 no longer meshes with the second gear 57, the two triangular plates 38 will move back and reset in an interleaved manner under the elastic force of the first spring 45 and the second spring 46. The right triangular plate moves downward, and by the contact of the right triangular plate 38 with the guide wheel 37, the detection block 33 can move rightward along the guide rail 32, making the viewing range detected by the light source generator 34 and the optical receiver 35 below the detection block 33 larger;

[0055] During the detection process, the air storage cylinder 41 and the piston plate 42 move synchronously with the two triangular plates 38, so that the piston plate 42 performs reciprocating vertical displacement relative to the air storage cylinder 41. The air at the detection position is pumped into the air storage cylinder 41 through the air extraction pipeline 47, and the air in the air storage cylinder 41 is discharged through the exhaust pipeline 48, accelerating the air flow speed at the detection position, so that the dust in the air at the detection position is not likely to fall on the surface of the mobile phone glass cover plate;

[0056] After the detection work is completed, the arc-shaped tooth groove 56 meshes with the third gear 72, and drives the rotating rod 73 to rotate through the second transmission rod 71 and the bevel gear 74, so that the feed gear 75 rotates a certain angle, and the feed rack 76 can drive the moving plate 11 to move forward a certain distance, so that after each detection is completed, the moving plate 11 and the glass cover plate thereon are automatically moved forward a certain distance, realizing the feeding of the glass cover plate.

[0057] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An optical detection device for a mobile phone glass cover plate, characterized in that, Including: A detection platform, on the upper end of which a moving plate is slidably connected in the horizontal direction; A clamping mechanism, arranged above the moving plate and used for clamping and fixing the glass cover plate to be detected; A detection mechanism, used for comprehensively detecting the glass cover plate. The detection mechanism includes two L-shaped rods fixedly connected to the upper end of the detection platform. A guide rail is fixedly connected between the two L-shaped rods. A detection block is slidably connected in the guide rail. A light source generator and an optical receiver are symmetrically arranged at the lower end of the detection block. A guide rod is fixedly connected to the upper end of the detection block. The part of the guide rod extending above the guide rail is fixedly connected with a guide wheel. Two triangular plates are slidably connected in the vertical direction above the guide rail; One of the triangular plates is embedded in the other triangular plate, and the guide wheel is in rolling contact with any one of the triangular plates; A Z-shaped mounting plate is fixedly connected to the upper end of the detection platform. A dust suction mechanism is arranged on the Z-shaped mounting plate for preventing dust from falling on the glass cover plate during the detection process. The dust suction mechanism includes an air storage cylinder slidably connected to the side wall of the Z-shaped mounting plate in the vertical direction. A piston plate is hermetically slidably connected to the inner wall of the air storage cylinder. Connecting rods are fixedly connected above the two triangular plates. The two connecting rods are respectively fixedly connected to the piston plate and the air storage cylinder. A baffle is fixedly connected to the upper end of the Z-shaped mounting plate. A first spring is arranged between the air storage cylinder and the baffle. A second spring is arranged between the piston plate and the inner top wall of the air storage cylinder. An air extraction pipe and an exhaust pipe are fixedly communicated with one side wall of the air storage cylinder away from the Z-shaped mounting plate. Check valves are arranged inside the air extraction pipe and the exhaust pipe; A driving mechanism is arranged on the Z-shaped mounting plate for driving the detection mechanism and the dust suction mechanism to work synchronously. The driving mechanism includes a first transmission rod rotatably connected to the Z-shaped mounting plate. A first gear is fixedly connected to the first transmission rod. A first rack is fixedly connected between the triangular plate and the connecting rod. The two first racks are respectively meshed with both sides of the first gear. A driving rod is rotatably connected to the side wall of the Z-shaped mounting plate. A first motor for driving the driving rod is fixedly connected to the side wall of the Z-shaped mounting plate away from the driving rod. An arc-shaped tooth groove is fixedly connected to the driving rod. A second gear meshed with the arc-shaped tooth groove is fixedly connected to the first transmission rod.

2. The optical detection device for the mobile phone glass cover plate according to claim 1, characterized in that, The lower end of the air extraction pipe is fixedly communicated with a dust suction pipe. A plurality of dust suction nozzles distributed in a linear array are fixedly communicated with one side wall of the dust suction pipe close to the detection block.

3. The optical detection device for the mobile phone glass cover plate according to claim 1, characterized in that, The clamping mechanism includes two support plates fixedly connected to the upper end of the moving plate. A two-way lead screw cylinder is rotatably connected between the two support plates. A second motor for driving the two-way lead screw cylinder is fixedly connected to the side wall of one of the support plates. The two side rod bodies of the two-way lead screw cylinder are provided with threads with opposite spiral directions. Sliding plates are in threaded fit with the two threaded parts on both sides of the two-way lead screw cylinder. The sliding plates are slidably connected to the upper wall of the moving plate in the horizontal direction. A support platform is fixedly connected to the central position of the moving plate. A hydraulic telescopic rod is fixedly connected to one side of the sliding plate close to the support platform. The telescopic end of the hydraulic telescopic rod is fixedly connected to a clamping plate. A third spring is arranged between the sliding plate and the clamping plate.

4. The optical detection device for the mobile phone glass cover plate according to claim 3, characterized in that, A reinforcement mechanism controlled by the clamping mechanism is further arranged at the upper end of the moving plate and is used for reinforcing the glass cover plate before complete clamping. The reinforcement mechanism includes a suction groove opened at the upper end of the support platform. A lifting plate is hermetically slidably connected to the inner wall of the suction groove. A hydraulic cavity is arranged in the support platform at a position below the suction groove. A lifting block is hermetically slidably connected in the hydraulic cavity. A fixed rod is fixedly connected between the lifting block and the lifting plate. A liquid infusion hose is fixedly communicated between the inside of the hydraulic telescopic rod and the inside of the hydraulic cavity. Hydraulic oil is filled between the inside of the hydraulic telescopic rod, the space above the lifting block inside the hydraulic cavity, and the liquid infusion hose.

5. The optical detection device for the mobile phone glass cover plate according to claim 1, characterized in that, An automatic feeding mechanism is arranged between the driving mechanism and the moving plate and is used for automatically displacing the glass cover plate forward by a preset feeding distance after the detection is completed. The automatic feeding mechanism includes a second transmission rod rotatably connected through the Z-shaped mounting plate. A third gear meshing with the arc-shaped tooth groove is fixedly connected to the second transmission rod. A rotating rod is rotatably connected to the side wall of the Z-shaped mounting plate through a mounting block. Bevel gears meshing with each other are fixedly connected to the ends of the rotating rod and the second transmission rod close to each other. A feeding gear is fixedly connected to the bottom end of the rotating rod. A feeding rack meshing with the feeding gear is fixedly connected to the upper end of the moving plate.

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