Mobile phone glass cover plate arc edge defect detection device

Abstract

The invention relates to the technical field of optical detection, in particular to a mobile phone glass cover plate arc edge defect detection device which comprises an optical arc edge detection mechanism, the optical arc edge detection mechanism comprises an infrared ray emitting plate and an infrared ray receiving plate which are always parallel, and the two ends of the infrared ray emitting plate and the two ends of the infrared ray receiving plate are jointly and fixedly connected with a fixing plate; the top end and the bottom end of the fixing plate are fixedly connected with connecting strips. In order to realize accurate detection of the cambered surface position of the glass cover plate and ensure that the reflection path of detection light is predictable, the infrared transmitting plate and the infrared receiving plate need to be always kept parallel, then the cambered surface of the glass cover plate is detected through synchronous movement of the infrared transmitting plate and the infrared receiving plate, and when a defective range line is detected, the infrared transmitting plate and the infrared receiving plate move synchronously. The intensity of infrared rays received by the infrared receiving plate is weakened, and after receiving the signal, the PLC controls the first motor to operate for a set time and adjusts the positions of the infrared receiver and the infrared transmitter.

Description

Technical Field

[0001] The present invention relates to the field of optical detection technology, and in particular to a device for detecting arc edge defects of a mobile phone glass cover. Background Art

[0002] In order to ensure the quality of the mobile phone, the glass cover of the mobile phone is also called the mobile phone screen protection glass or display cover. It is a layer of glass material covering the surface of the mobile phone display screen. In order to achieve the anti-fingerprint function, the existing mobile phone glass cover will be coated with a layer of oleophobic and hydrophobic film on the surface of the glass cover. This film can prevent traces of finger touch from remaining easily and keep the screen clean. This kind of glass cover is called a coated glass cover. However, in the production process of the coated glass cover, impurities or bubbles in the glass raw materials may cause cracking during processing. Improper temperature, time or cooling speed in the hot bending process may cause glass deformation or stress concentration, which will eventually lead to defects in the arc edge of the produced mobile phone glass cover. Therefore, after the production of the mobile phone glass cover is completed, it is necessary to detect the arc edge defects. For example, a mobile phone glass cover arc edge defect detection device disclosed in application number CN202010375093.1 is for detecting arc edge defects of mobile phone glass cover plates.

[0003] The existing mobile phone glass cover arc edge defect detection device usually detects defects by image capture and image processing. Since the arc edge of the glass cover is at the edge of the glass cover and has a certain curvature, it is difficult to form an image optically, and the depth of field of the lens is generally limited, so it is difficult to ensure clear imaging. Especially at the edge, multiple reflections and scattering of light will make the image blurred, making it difficult to accurately capture defects. Therefore, this will make the defect features not obvious enough and difficult to accurately identify through image processing algorithms;

[0004] And usually they can only detect, but cannot mark or identify the location where the defect is detected. This is a shortcoming for subsequent repair or quality control processes, because without marking, operators may find it difficult to quickly locate the specific location of the defect, thus affecting efficiency and accuracy. Summary of the invention

[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides a device for detecting arc edge defects of a mobile phone glass cover, which can effectively solve the problems of inaccurate detection and inability to mark in the prior art.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] The present invention provides a device for detecting arc edge defects of a mobile phone glass cover plate, comprising:

[0008] An optical arc edge detection mechanism, the optical arc edge detection mechanism comprises an infrared emitting plate and an infrared receiving plate which are always parallel, the two ends of the infrared emitting plate and the infrared receiving plate are fixedly connected to a fixed plate, the top and bottom ends of the fixed plate are fixedly connected to a connecting strip, the top end of the connecting strip at the bottom end is slidably connected to a first permanent magnet block, the top end of the first permanent magnet block is fixedly connected to an infrared emitter, the bottom end of the connecting strip at the top end is slidably connected to a second permanent magnet block, the bottom end of the second permanent magnet block is fixedly connected to an infrared receiver, and the infrared emitter and the infrared receiver axis coincide;

[0009] The marking mechanism includes a pressure plate for determining the arc edge height, arc edge marking components are connected to both sides of the pressure plate, the arc edge marking components include a marking pen that can move in all directions, and the marking mechanism also includes an arc surface marking component for marking arc surface defects.

[0010] Preferably, it also includes an operating table, the top of which is fixedly connected to a protective cover, the top of which is fixedly connected to a transport plate, the interior of the transport plate is provided with a placement groove, the top of the transport plate is provided with a movable groove, and the inner bottom surface of the movable groove is provided with a connecting groove communicating with the placement groove.

[0011] Preferably, it also includes a transportation mechanism, which includes a first electric telescopic rod fixedly connected to the inner wall of the placement groove, the telescopic end of the first electric telescopic rod is fixedly connected to a connecting block, the outer wall of the connecting block away from the first electric telescopic rod is provided with a sliding groove, the inner wall of the sliding groove is slidably connected to a sliding block, the outer wall of the sliding block is fixedly connected to a push plate, limiting grooves are provided on both side inner walls of the placement groove, a limiting rod connected to the push plate for unidirectional rotation is slidably connected in the limiting groove, and the first electric telescopic rod is electrically connected to a PLC controller to form a transportation loop.

[0012] Preferably, the inner wall of the movable groove is slidably connected with a holding plate, the bottom end of the holding plate is fixedly connected with an extension plate that is in sliding contact with the movable groove, and the extension plate is intermittently in contact with the push plate, the top of the holding plate is fixed with a first flexible fixing strip, the top of the holding plate is provided with a fixing groove, the inner wall of the fixing groove is slidably connected with a limiting block, a first spring is fixedly connected between the limiting block and the fixing groove, the top of the limiting block is fixedly connected with a second flexible fixing strip, the first flexible fixing strip and the second flexible fixing strip jointly clamp the glass cover plate, the top of the holding plate is provided with a card slot, and the other end of the holding plate is fixedly connected with a card block that is engaged with the card slot.

[0013] Preferably, the optical arc edge detection mechanism also includes two symmetrical support columns fixedly connected to the top of the operating table, the outer walls of the support columns are fixedly connected to a support plate, the outer wall of the support plate is fixedly connected to a first motor, the output end of the first motor and the center of the arc edge of the glass cover plate are on the same axis, the output end of the first motor is fixedly connected to the outer wall of one of the fixed plates, the infrared transmitting board, the infrared receiving board, the first motor and the PLC controller are electrically connected to form a detection circuit.

[0014] Preferably, a movable cavity is opened inside the connecting strip, and the inner walls of the movable cavity are respectively slidably connected with a third permanent magnet block magnetically attracted to the first permanent magnet block and a fourth permanent magnet block magnetically attracted to the second permanent magnet block, and the outer walls of the third permanent magnet block and the fourth permanent magnet block are fixedly connected with an airtight plate which is airtightly slidably connected to the inner wall of the movable cavity, and the top of the placement groove is fixedly connected with a micro vacuum pump, and the output end of the micro vacuum pump is fixedly connected with multiple exhaust pipes, and two air outlets of the multiple exhaust pipes are respectively connected with the two movable cavities.

[0015] Preferably, the marking mechanism also includes a fixed cover fixedly connected to the top of the operating table, a second electric telescopic rod is fixedly connected to the inner bottom wall of the fixed cover, the telescopic end of the second electric telescopic rod is fixedly connected to the pressure plate, permanent magnetic strips are fixedly connected on both sides of the pressure plate, and a pressure sensor connected to the electrical signal of the PLC controller is embedded in the bottom end of the pressure plate.

[0016] Preferably, the arc edge marking assembly includes lifting grooves opened on the inner walls on both sides of the fixed cover, the inner walls of the lifting grooves are fixedly connected to two symmetrical electromagnetic plates, the inner walls of the lifting grooves are slidably connected to a permanent magnetic lifting block magnetically attracted to the electromagnetic plate, the other end of the permanent magnetic lifting block is fixedly connected to a third electric telescopic rod, the telescopic end of the third electric telescopic rod is fixedly connected to a marking shell, the marking shell and the inner top wall of the fixed cover are jointly fixedly connected with a plurality of second springs, the outer wall of the marking shell is fixedly connected to a second motor, the output end of the second motor is fixedly connected to a reciprocating screw, the outer wall of the reciprocating screw is sleeved with a reciprocating block slidably connected to the inner wall of the marking shell, the outer wall of the marking shell is fixedly connected to an electromagnetic strip magnetically attracted to the permanent magnetic strip, the bottom end of the reciprocating block is fixedly connected to a marking pen, the bottom end of the reciprocating block is fixedly connected to a drying ring, the second electric telescopic rod, the electromagnetic plate, the second motor, the electromagnetic strip are electrically connected to the PLC controller and form an arc edge marking loop.

[0017] Preferably, the arc surface marking component includes a micro-storage shell fixedly connected to the side wall of the connecting strip below, the micro-storage shell is filled with marking pigment, the outer wall of the first permanent magnet block is fixedly connected to a traction rod, the other end of the traction rod is fixedly connected to a movable plate fixedly connected to the top of the connecting strip below, the top of the movable plate is fixedly connected to a micro-pump nozzle, and a telescopic feeding pipe is fixedly connected between the micro-pump nozzle and the micro-storage shell, the infrared transmitter, infrared receiver, micro-pump nozzle, micro-vacuum pump are electrically connected to the PLC controller and form an arc surface marking loop.

[0018] Compared with the known prior art, the technical solution provided by the present invention has the following beneficial effects:

[0019] 1. In order to accurately detect the arc position of the glass cover plate and ensure that the reflection path of the detection light is predictable, the infrared emitting board and the infrared receiving board must always remain parallel, and then the infrared emitting board and the infrared receiving board are moved synchronously to detect the arc surface of the glass cover plate. When the range line with defects is detected, the infrared intensity received by the infrared receiving board will be weakened. After receiving the signal, the PLC controller controls the first motor to run for a set time, adjusts the position of the infrared receiver and the transmitter, and then extracts the air through the micro vacuum pump, so that the airtight plate drives the permanent magnet block and the infrared component and the micro pump nozzle to move synchronously. When the infrared intensity received by the infrared receiver changes, the exact defect position is found, and then the micro vacuum pump is controlled to continue to run for a set time and then stop, so that the micro pump nozzle is in the defect position. Finally, the micro pump nozzle is controlled to start by the PLC controller, and the marking pigment in the micro storage shell is sprayed at the position where the defect is detected using the telescopic feeding tube to ensure the accuracy and recognizability of the marking for subsequent re-inspection.

[0020] 2. In the fixed cover, the second electric telescopic rod is controlled by the PLC controller to move downward, and the pressure plate is pressed on the arc edge of the glass cover. After reaching the preset pressure, the electromagnetic plate adsorbs the permanent magnetic lifting block when the electromagnetic strip is powered off to fix the marking shell. Then the second electric telescopic rod is controlled to reset, and the third electric telescopic rod is started to move the marking pen to the upper surface of the arc edge of the glass cover. Then the second motor is started to drive the reciprocating block to move so that the marking pen marks the arc edge. At the same time, the drying ring dries the pigment. In this way, the entire arc edge is marked, but the defect position will not be marked, which is convenient for identifying the defect position during subsequent processing.

[0021] 3. The present invention realizes automatic and continuous detection of glass cover plates through the transportation mechanism. The PLC controller controls the first electric telescopic rod to drive the push plate to move, so that the glass cover plate automatically enters the optical arc edge detection mechanism. Multiple holding plates are tightly connected through card slots and card blocks to ensure that the detection process is uninterrupted. This design improves the detection efficiency, realizes the continuity of transportation and detection, reduces manual intervention, and makes automatic detection smoother. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the internal three-dimensional structure of the present invention;

[0025] Figure 3 It is a schematic diagram of the three-dimensional structure of the bottom end of the transport plate of the present invention;

[0026] Figure 4 It is a schematic diagram of the three-dimensional structure of the holding plate of the present invention;

[0027] Figure 5 It is a schematic diagram of the three-dimensional structure of the optical arc edge detection mechanism of the present invention;

[0028] Figure 6 It is a schematic diagram of a partial three-dimensional structure of the optical arc edge detection mechanism of the present invention;

[0029] Figure 7 It is a schematic diagram of the three-dimensional structure of a part of the arc edge marking assembly of the present invention;

[0030] Figure 8 It is a schematic diagram of the three-dimensional structure of the fixed cover of the present invention;

[0031] Fig. 9 For the present invention Figure 5 Schematic diagram of the structure of part A;

[0032] Fig.10 For the present invention Figure 3 Schematic diagram of the structure of part B.

[0033] Figure numerals: 1. operating table; 2. protective cover; 3. transport plate; 4. placement slot; 5. moving slot; 6. connecting slot; 7. optical arc edge detection mechanism; 71. infrared emitting plate; 72. infrared receiving plate; 73. fixing plate; 74. connecting strip; 75. first permanent magnet block; 76. second permanent magnet block; 77. infrared transmitter; 78. infrared receiver; 79. supporting column; 710. supporting plate; 711. first motor; 712. moving cavity; 713. third permanent magnet block; 714. fourth permanent magnet block; 715. airtight plate; 716. micro vacuum pump; 717. multi-port exhaust duct; 8. marking mechanism; 81. pressure plate; 82. arc edge marking assembly; 821. marking pen; 822. lifting slot; 823. electromagnetic plate; 824. permanent magnet lifting block; 825. first Three electric telescopic rods; 826, marking shell; 827, second motor; 828, reciprocating screw rod; 829, reciprocating block; 8210, electromagnetic strip; 8211, drying ring; 83, arc surface marking assembly; 831, micro storage shell; 832, traction rod; 833, moving plate; 834, micro pump nozzle; 835, telescopic feeding pipe; 84, fixed cover; 85, second electric telescopic rod; 86, permanent magnetic strip; 9, transportation mechanism; 91, first electric telescopic rod; 92, connecting block; 93, sliding groove; 94, sliding block; 95, push plate; 96, limit groove; 97, limit rod; 98, holding plate; 99, extension plate; 910, first flexible fixing strip; 911, fixing groove; 912, limit block; 913, second flexible fixing strip; 914, card slot; 915, card block. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] The present invention will be further described below in conjunction with the embodiments.

[0036] Example: Refer to Figures 1 to 10 , a mobile phone glass cover arc edge defect detection device, comprising:

[0037] An operating table 1 is provided, and a protective cover 2 is fixedly connected to the top of the operating table 1. A transport plate 3 is fixedly connected to the top of the operating table 1. A placement groove 4 is provided inside the transport plate 3. A moving groove 5 is provided at the top of the transport plate 3. A connecting groove 6 communicating with the placement groove 4 is provided on the inner bottom surface of the moving groove 5.

[0038] The optical arc edge detection mechanism 7 is used to detect the arc surface and arc edge defects of the glass cover plate by optics. Figure 5 , Figure 6 , Fig. 9 The optical arc edge detection mechanism 7 includes an infrared emitting plate 71 and an infrared receiving plate 72 which are always parallel. The two ends of the infrared emitting plate 71 and the infrared receiving plate 72 are fixedly connected with a fixing plate 73. The top and bottom ends of the fixing plate 73 are fixedly connected with a connecting strip 74. The top end of the connecting strip 74 at the bottom end is slidably connected with a first permanent magnet block 75. The top end of the first permanent magnet block 75 is fixedly connected with an infrared emitter 77. The bottom end of the connecting strip 74 at the top end is slidably connected with a second permanent magnet block 76. The bottom end of the second permanent magnet block 76 is fixedly connected with an infrared receiver 78. The axes of the infrared emitter 77 and the infrared receiver 78 coincide. The infrared emitting plate 71 and the infrared receiving plate 72 are always parallel. Therefore, the infrared rays emitted by the infrared emitting plate 71 will be continuously received by the infrared receiving plate 72. At the same time, the infrared rays emitted by the infrared emitter 77 will also be continuously received by the infrared receiver 78.

[0039] Among them, the optical arc edge detection mechanism 7 also includes two symmetrical support columns 79 fixedly connected to the top of the operating table 1, the outer wall of the support column 79 is fixedly connected to the support plate 710, the outer wall of the support plate 710 is fixedly connected to the first motor 711, the output end of the first motor 711 is on the same axis as the center of the arc edge of the glass cover plate, the output end of the first motor 711 is fixedly connected to the outer wall of one of the fixed plates 73, the infrared transmitting plate 71, the infrared receiving plate 72, the first motor 711 are connected to the PLC controller electrical signal to form a detection circuit.

[0040] Among them, a movable cavity 712 is opened inside the connecting strip 74, and the inner wall of the movable cavity 712 is respectively slidably connected with a third permanent magnet block 713 magnetically attracted to the first permanent magnet block 75 and a fourth permanent magnet block 714 magnetically attracted to the second permanent magnet block 76, and the outer walls of the third permanent magnet block 713 and the fourth permanent magnet block 714 are fixedly connected with an airtight plate 715 airtightly slidably connected to the inner wall of the movable cavity 712, and the top of the placement slot 4 is fixedly connected with a micro vacuum pump 716, and the output end of the micro vacuum pump 716 is fixedly connected with a multi-port exhaust pipe 717, and the two air outlets of the multi-port exhaust pipe 717 are respectively connected to the two movable cavities 712, and the multi-port exhaust pipe 717 is retractable.

[0041] The arc surface defects and arc edge defects are marked by the marking mechanism 8, referring to Figures 7 to 9The marking mechanism 8 includes a pressure plate 81 for determining the height of the arc edge, and arc edge marking components 82 are connected to both sides of the pressure plate 81. The arc edge marking component 82 includes a marking pen 821 that can move in all directions. The marking mechanism 8 also includes an arc surface marking component 83 for marking arc surface defects. The marking mechanism 8 also includes a fixed cover 84 fixedly connected to the top of the operating table 1, and a second electric telescopic rod 85 is fixedly connected to the inner bottom wall of the fixed cover 84. The telescopic end of the second electric telescopic rod 85 is fixedly connected to the pressure plate 81. Permanent magnetic strips 86 are fixedly connected to both sides of the pressure plate 81. A pressure sensor connected to the electrical signal of the PLC controller is embedded at the bottom end of the pressure plate 81, wherein the pressure sensor is pre-set with the average pressure value that the arc edge can withstand, so the pressure plate 81 will not damage the glass cover, and the pressure plate 81 and the bottom end of the marking pen 821 are at the same horizontal plane.

[0042] The arc edge marking assembly 82 includes a lifting groove 822 provided on the inner wall of both sides of the fixed cover 84, the inner wall of the lifting groove 822 is fixedly connected with two symmetrical electromagnetic plates 823, the inner wall of the lifting groove 822 is slidably connected with a permanent magnetic lifting block 824 that is magnetically attracted to the electromagnetic plate 823, the other end of the permanent magnetic lifting block 824 is fixedly connected with a third electric telescopic rod 825, the telescopic end of the third electric telescopic rod 825 is fixedly connected with a marking shell 826, the marking shell 826 and the inner top wall of the fixed cover 84 are fixedly connected with a plurality of second springs, the outer wall of the marking shell 826 is fixedly connected with a second motor 827, and the output end of the second motor 827 is fixedly connected It is connected to a reciprocating screw rod 828, the outer wall of the reciprocating screw rod 828 is provided with a reciprocating block 829 which is slidably connected to the inner wall of the marking shell 826, the outer wall of the marking shell 826 is fixedly connected to an electromagnetic strip 8210 which is magnetically attracted to the permanent magnet strip 86, the bottom end of the reciprocating block 829 is fixedly connected to the marking pen 821, the bottom end of the reciprocating block 829 is fixedly connected to the drying ring 8211, the second electric telescopic rod 85, the electromagnetic plate 823, the second motor 827, the electromagnetic strip 8210 are connected to the PLC controller by electrical signals to form an arc edge marking loop, wherein the drying ring 8211 can quickly dry the paint applied by the marking pen 821 to prevent the paint from diffusing.

[0043] The arc surface marking component 83 includes a micro-storage shell 831 fixedly connected to the side wall of the connecting strip 74 located below, and the micro-storage shell 831 is filled with marking pigment. The outer wall of the first permanent magnet block 75 is fixedly connected to a traction rod 832, and the other end of the traction rod 832 is fixedly connected to a movable plate 833 fixedly connected to the top of the connecting strip 74 located below, and the top of the movable plate 833 is fixedly connected to a micro-pump nozzle 834, and a telescopic feeding pipe 835 is fixedly connected between the micro-pump nozzle 834 and the micro-storage shell 831. The infrared transmitter 77, the infrared receiver 78, the micro-pump nozzle 834, and the micro-vacuum pump 716 are electrically connected to the PLC controller to form an arc surface marking loop, wherein the micro-pump nozzle 834 sprays pigment in a quantitative manner each time, and can be quickly air-dried to prevent the pigment from flowing, and the above-mentioned pigment is erasable.

[0044] The device also includes a transport mechanism 9, which includes a first electric telescopic rod 91 fixedly connected to the inner wall of the placement groove 4, a connecting block 92 fixedly connected to the telescopic end of the first electric telescopic rod 91, a sliding groove 93 is provided on the outer wall of the connecting block 92 away from the first electric telescopic rod 91, a sliding block 94 is slidably connected to the inner wall of the sliding groove 93, a push plate 95 is fixedly connected to the outer wall of the sliding block 94, limiting grooves 96 are provided on the inner walls of both sides of the placement groove 4, and a limiting rod 97 slidably connected to the push plate 95 for one-way rotation is slidably connected in the limiting groove 96, and the first electric telescopic rod 91 is electrically connected to a PLC controller to form a transport loop.

[0045] The inner wall of the movable groove 5 is slidably connected with a holding plate 98, and the bottom end of the holding plate 98 is fixedly connected with an extension plate 99 that is in sliding contact with the movable groove 5, and the extension plate 99 is intermittently in contact with the push plate 95. A first flexible fixing strip 910 is fixedly provided at the top of the holding plate 98, and a fixing groove 911 is provided at the top of the holding plate 98. A limiting block 912 is slidably connected to the inner wall of the fixing groove 911, and a first spring is fixedly connected between the limiting block 912 and the fixing groove 911. A second flexible fixing strip 913 is fixedly connected to the top of the limiting block 912. The first flexible fixing strip 910 and the second flexible fixing strip 913 jointly clamp the glass cover plate. A card slot 914 is provided at the top of the holding plate 98, and a card block 915 that is carded with the card slot 914 is fixedly connected to the other end of the holding plate 98. The continuity of detection is ensured by connecting multiple holding plates 98 with the card block 915 through the card slot 914.

[0046] The working principle of the present invention is as follows:

[0047] First, manually fix the second flexible fixing strip 913 Pull it out, then put the glass cover plate on the holding plate 98, and then slowly loosen the second flexible fixing strip 913, and fix the glass cover plate by the first flexible fixing strip 910 and the second flexible fixing strip 913 (such as Figure 4), during the placement process, it is necessary to manually align the center line of the glass cover plate with the center line of the holding plate 98, then place it into the placement slot, and place the card block 915 of the front holding plate 98 into the card slot 914 of the rear holding plate 98.

[0048] Then the first electric telescopic rod 91 is started, and the first electric telescopic rod 91 pushes the connecting block 92 to move synchronously with the push plate 95. Since the limit rod 97 fixedly connected to the push plate 95 moves in the limit groove 96 (the moving direction of the limit rod 97 is as follows Figure 3 The push plate 95 moves back and forth in the direction of abcd. Since the push plate 95 is connected to the limit rod 97 for one-way rotation, the limit rod 97 can only rotate upward when it moves to the midpoint of the b end, so there will be no disorder in the path of the limit rod 97). Therefore, the push plate 95 will be driven to push the extension plate 99 and the receiving plate 98 to move forward. When the limit rod 97 moves to the arc of the limit groove 96, it will move downward, and then the push plate 95 will drive the sliding block 94 to slide downward in the sliding groove 93. After the first electric telescopic rod 91 is reset, the push plate 95 will return to the extension plate 99 under the new receiving plate 98 to facilitate the next transportation.

[0049] At the same time, the front holding plate 98 will be between the optical arc edge detection mechanism 7, and then the first motor 711 is controlled to start by the PLC controller, and the first motor 711 drives the fixing plate 73 to rotate downward 90 degrees, so that the infrared emitting plate 71 and the infrared receiving plate 72 are located at the upper and lower sides of the glass cover plate, and the infrared emitting plate 71 and the infrared receiving plate 72 are started by the PLC controller, and the infrared rays emitted by the infrared emitting plate 71 pass through the glass cover plate and are then received by the infrared receiving plate 72. Since the infrared emitting plate 71 and the infrared receiving plate 72 are always kept vertical on both sides of the glass cover plate, and the color of the detection light is red, and the irradiated red light is thin, the infrared emitting plate 71 and the infrared receiving plate 72 are kept parallel to ensure that the reflection path of the detection light on the arc edge of the glass cover plate is predictable, so that the arc edge position can be accurately analyzed by accurately analyzing the reflection signal. Precise detection of position and shape. The high sensitivity of infrared enables it to capture subtle deviations or defects. Even tiny flaws or unevenness on the arc edge of the glass cover can be detected to ensure the high quality of the product. Due to the long wavelength of infrared, it is insensitive to interference from ambient light sources. Even in complex production environments, it can maintain the stability and accuracy of detection. Choosing red detection light helps to improve detection efficiency and accuracy, because red light has a long wavelength and strong penetration, which can reduce the refraction and absorption of light in the glass, allowing more light to reach the detection area. The illumination method of the fine light beam further improves the detection resolution, because the fine light beam can concentrate energy and accurately focus on a specific part, thereby detecting smaller defects or irregularities, while reducing light scattering, improving the purity of the signal, and further enhancing the accuracy of detection. Therefore, the above detection of arc edge defects of glass cover is more accurate;

[0050] When the glass cover of the mobile phone is defective, the infrared rays received by the infrared receiving board 72 will change the reflection angle and reflection intensity of the infrared rays, so that the intensity of the infrared rays received by the infrared receiving board 72 is weakened, so the infrared receiving board 72 transmits the electrical signal to the PLC controller, and then the PLC controller controls the first motor 711 to stop rotating after the set time t1 (the t1 is the time required for the infrared receiver 78 and the infrared transmitter 77 to be at the original positions of the infrared receiving board 72 and the infrared transmitter board 71), and then the PLC controller controls the micro vacuum pump 716 to start, and the micro vacuum pump 716 evenly extracts the air in the two movable chambers 712 through the multiple exhaust pipes 717, thereby making the airtight plate 712 15 moves forward, thereby driving the third permanent magnet block 713 and the fourth permanent magnet block 714 to move forward, and under the action of magnetic attraction, respectively drive the first permanent magnet block 75 and the second permanent magnet block 76 to move forward synchronously, thereby driving the infrared transmitter 77 and the infrared receiver 78 to move forward, and then pull the moving plate 833 through the traction rod 832 to drive the micro pump nozzle 834 to move synchronously, when the intensity of the infrared light received by the infrared receiver 78 will change, the infrared receiver 78 transmits the electrical signal to the PLC controller, and then the PLC controller makes the micro air pump 716 continue to run for a set time t2 and then stop running (the t2 is the time required for the micro pump nozzle 834 to (move to) the original position of the infrared transmitter);

[0051] The PLC controller then controls the micro pump nozzle 834 to start, and sprays the marking pigment in the micro storage shell 831 to the position where the defect has just been detected through the telescopic feeding tube 835.

[0052] At the same time, the glass cover plate in the fixed cover 84 will control the second electric telescopic rod 85 to move downward through the PLC controller, thereby driving the pressure plate 81 to press on the arc edge of the glass cover plate. When the pressure sensor reaches the preset pressure value, the PLC controller controls the electromagnetic strip 8210 to cut off the power, so that the electromagnetic strip 8210 and the permanent magnet strip 86 are no longer adsorbed, and at the same time, the electromagnetic plate 823 is energized, and the permanent magnet lifting block 824 is adsorbed by the electromagnetic plate 823, so that the second electric telescopic rod 85 drives the marking shell 826 to remain motionless, and controls the second electric telescopic rod 85 to reset. Therefore, the second electric telescopic rod 85 can only drive the pressure plate 81 to reset, because now the bottom end of the marking pen 821 is just at the same horizontal plane as the upper end of the arc edge of the glass cover plate. Then, the third electric telescopic rod 825 is started up by the PLC controller (the telescopic distance of the third electric telescopic rod 825 is pre-tested to allow the detection pen to be located at the arc edge of the glass cover), and the second motor 827 is started up by the PLC controller. The second motor 827 drives the reciprocating screw 828 to rotate, and the reciprocating block 829 is limited by the marking shell 826, so that the reciprocating block 829 drives the marking pen 821 to mark the arc edge of the glass cover. At the same time, the marked pigment is dried by the drying ring 8211, and the arc edge of the glass cover is marked by the marking pen 821, while the defective and damaged positions will not be marked. Therefore, the positions that are not marked in the subsequent processing process are defects.

[0053] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A mobile phone glass cover arc edge defect detection device, characterized in that: include: An optical arc edge detection mechanism (7), the optical arc edge detection mechanism (7) comprising an infrared emitting plate (71) and an infrared receiving plate (72) which are always parallel, the infrared emitting plate (71) and the infrared receiving plate (72) having two ends fixedly connected to a fixing plate (73), the top and bottom ends of the fixing plate (73) being fixedly connected to a connecting strip (74), the top end of the connecting strip (74) at the bottom end being slidably connected to a first permanent magnet block (75), the top end of the first permanent magnet block (75) being fixedly connected to an infrared emitter (77), the bottom end of the connecting strip (74) at the top end being slidably connected to a second permanent magnet block (76), the bottom end of the second permanent magnet block (76) being fixedly connected to an infrared receiver (78), the axes of the infrared emitter (77) and the infrared receiver (78) being coincident; A marking mechanism (8), the marking mechanism (8) comprising a pressure plate (81) for determining the height of the arc edge, arc edge marking components (82) are connected to both sides of the pressure plate (81), the arc edge marking component (82) comprises a marking pen (821) that can move in all directions, and the marking mechanism (8) also comprises an arc surface marking component (83) for marking arc surface defects.

2. A mobile phone glass cover arc edge defect detection device according to claim 1, characterized in that: It also comprises an operating table (1), the top of the operating table (1) being fixedly connected to a protective cover (2), the top of the operating table (1) being fixedly connected to a transport plate (3), the interior of the transport plate (3) being provided with a placement groove (4), the top of the transport plate (3) being provided with a moving groove (5), the inner bottom surface of the moving groove (5) being provided with a connecting groove (6) communicating with the placement groove (4).

3. A mobile phone glass cover arc edge defect detection device according to claim 2, characterized in that: The utility model also comprises a transport mechanism (9), wherein the transport mechanism (9) comprises a first electric telescopic rod (91) fixedly connected to the inner wall of the placement groove (4), a connecting block (92) fixedly connected to the telescopic end of the first electric telescopic rod (91), a sliding groove (93) is provided on the outer wall of the connecting block (92) away from the first electric telescopic rod (91), a sliding block (94) is slidably connected to the inner wall of the sliding groove (93), a push plate (95) is fixedly connected to the outer wall of the sliding block (94), limiting grooves (96) are provided on both sides of the inner wall of the placement groove (4), and a limiting rod (97) slidably connected to the push plate (95) in one direction is rotatably connected in the limiting groove (96), and the first electric telescopic rod (91) is electrically connected to a PLC controller to form a transport loop.

4. A mobile phone glass cover arc edge defect detection device according to claim 3, characterized in that: The inner wall of the movable groove (5) is slidably connected to a holding plate (98), the bottom end of the holding plate (98) is fixedly connected to an extension plate (99) that is in sliding contact with the movable groove (5), and the extension plate (99) is in intermittent contact with the push plate (95), the top end of the holding plate (98) is fixed with a first flexible fixing strip (910), the top end of the holding plate (98) is provided with a fixing groove (911), and the inner wall of the fixing groove (911) is slidably connected to a limiting block (912) ), a first spring is fixedly connected between the limit block (912) and the fixing groove (911), a second flexible fixing strip (913) is fixedly connected to the top of the limit block (912), the first flexible fixing strip (910) and the second flexible fixing strip (913) jointly clamp the glass cover plate, a slot (914) is provided at the top of the holding plate (98), and a block (915) is fixedly connected to the other end of the holding plate (98) and is engaged with the slot (914).

5. The device for detecting arc edge defects of mobile phone glass cover according to claim 3, characterized in that: The optical arc edge detection mechanism (7) further comprises two symmetrical support columns (79) fixedly connected to the top of the operating table (1); the outer wall of the support column (79) is fixedly connected to a support plate (710); the outer wall of the support plate (710) is fixedly connected to a first motor (711); the output end of the first motor (711) is coaxial with the center of the arc edge of the glass cover plate; the output end of the first motor (711) is fixedly connected to the outer wall of one of the fixed plates (73); the infrared emitting plate (71), the infrared receiving plate (72), the first motor (711) are electrically connected to a PLC controller and form a detection circuit.

6. The device for detecting arc edge defects of mobile phone glass cover according to claim 5, characterized in that: A movable cavity (712) is provided inside the connecting strip (74); the inner wall of the movable cavity (712) is slidably connected to a third permanent magnet block (713) magnetically attracted to the first permanent magnet block (75) and a fourth permanent magnet block (714) magnetically attracted to the second permanent magnet block (76); the outer walls of the third permanent magnet block (713) and the fourth permanent magnet block (714) are both fixedly connected to an airtight plate (715) airtightly slidably connected to the inner wall of the movable cavity (712); the top end of the placement groove (4) is fixedly connected to a micro air pump (716); the output end of the micro air pump (716) is fixedly connected to a plurality of exhaust pipes (717), and the two air outlets of the plurality of exhaust pipes (717) are respectively connected to the two movable cavities (712).

7. The device for detecting arc edge defects of mobile phone glass cover according to claim 2, characterized in that: The marking mechanism (8) further comprises a fixed cover (84) fixedly connected to the top of the operating table (1); a second electric telescopic rod (85) is fixedly connected to the inner bottom wall of the fixed cover (84); the telescopic end of the second electric telescopic rod (85) is fixedly connected to a pressure plate (81); permanent magnetic strips (86) are fixedly connected to both sides of the pressure plate (81); and a pressure sensor connected to an electrical signal of a PLC controller is embedded at the bottom end of the pressure plate (81).

8. The device for detecting arc edge defects of mobile phone glass cover according to claim 7, characterized in that: The arc edge marking assembly (82) includes a lifting groove (822) provided on the inner walls of both sides of the fixed cover (84); the inner walls of the lifting groove (822) are fixedly connected to two symmetrical electromagnetic plates (823); the inner walls of the lifting groove (822) are slidably connected to a permanent magnetic lifting block (824) that is magnetically attracted to the electromagnetic plates (823); the other end of the permanent magnetic lifting block (824) is fixedly connected to a third electric telescopic rod (825); the telescopic end of the third electric telescopic rod (825) is fixedly connected to a marking shell (826); the marking shell (826) and the inner top wall of the fixed cover (84) are fixedly connected to a plurality of second springs; the outer wall of the marking shell (826) is fixedly connected to a second motor (827), the output end of the second motor (827) is fixedly connected to a reciprocating screw (828), the outer wall of the reciprocating screw (828) is sleeved with a reciprocating block (829) slidably connected to the inner wall of the marking shell (826), the outer wall of the marking shell (826) is fixedly connected to an electromagnetic strip (8210) magnetically attracted to the permanent magnetic strip (86), the bottom end of the reciprocating block (829) is fixedly connected to the marking pen (821), the bottom end of the reciprocating block (829) is fixedly connected to a drying ring (8211), the second electric telescopic rod (85), the electromagnetic plate (823), the second motor (827), the electromagnetic strip (8210) are connected to the PLC controller by electrical signals and form an arc edge marking loop.

9. The device for detecting arc edge defects of mobile phone glass cover according to claim 2, characterized in that: The arc surface marking component (83) comprises a micro-material storage shell (831) fixedly connected to the side wall of the connecting strip (74) located below, the micro-material storage shell (831) is filled with marking pigment, the outer wall of the first permanent magnet block (75) is fixedly connected to a traction rod (832), the other end of the traction rod (832) is fixedly connected to a moving plate (833) fixedly connected to the top of the connecting strip (74) located below, the top of the moving plate (833) is fixedly connected to a micro-pump nozzle (834), and a telescopic feeding pipe (835) is fixedly connected between the micro-pump nozzle (834) and the micro-material storage shell (831), and the infrared transmitter (77), the infrared receiver (78), the micro-pump nozzle (834), and the micro-vacuum pump (716) are connected to the PLC controller by electrical signals to form an arc surface marking loop.

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