Screen defect detection equipment

Abstract

The utility model provides screen defect detection equipment which comprises a thickness measuring mechanism used for measuring the thickness of an electronic product to be detected; the jacking mechanism is used for bearing the to-be-detected electronic product and can lift the to-be-detected electronic product according to a measurement value of the thickness measurement mechanism, so that a screen of the to-be-detected electronic product is located on a detection reference surface; the displacement mechanism is connected with the jacking mechanism and can drive the jacking mechanism to displace, so that the screen of the to-be-detected electronic product displaces on the detection reference surface; and the screen detection mechanism faces a detection position on the detection reference surface and can detect the screen of the to-be-detected electronic product passing through the detection position. Therefore, the defect detection can be performed on the screens of the to-be-detected electronic products with different thicknesses, and a plurality of types of products can be simultaneously produced in a mixed manner, so that the productivity is improved.

Description

[0001] This application claims the priority of the Chinese patent application filed with the China Patent Office on April 19, 2024, with application number 2024104800264 and patent name “A Screen Defect Detection Device”, all contents of which are incorporated by reference in this application. Technical Field

[0002] The present application relates to the technical field of electronic products, and in particular to a screen defect detection device. Background Art

[0003] In the recycling and quality inspection process of used electronic products, it is necessary to show the glass screen of the product in detail to the user, conduct quantifiable data statistics on the defect characteristics on the screen, and complete the definition of the quality of the electronic product. In the existing technology, the screen surface is generally illuminated by a light source module, and the screen is scanned and photographed by a high-definition line scan camera, so as to restore the scratch defects on the surface of the electronic product screen. However, the existing equipment usually only supports one model of electronic products, and multiple models cannot be mixed and produced at the same time, and the production capacity is low. Utility Model Content

[0004] In view of this, the present application provides a screen defect detection device that can realize mixed production of multiple models and has good production capacity.

[0005] In order to achieve the above objectives, this application provides the following technical solutions:

[0006] A screen defect detection device, comprising:

[0007] Thickness measuring mechanism, used to measure the thickness of the electronic product to be inspected;

[0008] A lifting mechanism, used for carrying the electronic product to be detected, and capable of lifting and lowering the electronic product to be detected according to the measurement value of the thickness measuring mechanism, so that the screen of the electronic product to be detected is on the detection reference plane;

[0009] A displacement mechanism connected to the lifting mechanism and capable of driving the lifting mechanism to move so as to cause the screen of the electronic product to be tested to move on the testing reference plane;

[0010] The screen detection mechanism faces a detection position on the detection reference plane and is capable of detecting the screen of the electronic product to be detected that passes through the detection position.

[0011] Optionally, the screen detection mechanism includes:

[0012] A plurality of light source modules are arranged to illuminate the detection position in a preset order;

[0013] The camera module faces the detection position and is capable of capturing images of the screen of the electronic product to be detected which is located at the detection position and illuminated by the multiple light source modules in a preset order.

[0014] Optionally, the multiple light source modules are respectively located in multiple different directions of the detection position.

[0015] Optionally, the plurality of light source modules include:

[0016] The bright field light source forms an angle of 65-80 degrees with the detection reference plane;

[0017] The dark field light source forms an angle of 55-65 degrees with the detection reference plane;

[0018] The cross-field light source forms an angle of 55-65 degrees with the detection reference plane;

[0019] Wherein, two dark field light sources are symmetrically arranged.

[0020] Optionally, at least one side of the components around the detection position close to the light source module is provided with a pure color structure and / or an orange-striped structure.

[0021] Optionally, the camera module is configured as a line scan camera, and the displacement mechanism is configured as a linear motor.

[0022] Optionally,

[0023] The screen defect detection device comprises a frame, and the thickness measurement mechanism, the lifting mechanism, the displacement mechanism and the screen detection mechanism are all carried on the frame;

[0024] The screen detection mechanism comprises a light source mounting plate connected to a frame, and the plurality of light source modules are movably connected to the light source mounting plate via an arc track.

[0025] Optionally,

[0026] The screen defect detection device comprises a frame, and the thickness measurement mechanism, the lifting mechanism, the displacement mechanism and the screen detection mechanism are all carried on the frame;

[0027] The screen detection mechanism includes a camera mounting plate, which is slidably connected to the frame, and the sliding direction is consistent with the displacement direction of the displacement mechanism; the camera module is rotatably connected to the camera mounting plate, and the rotation axis is parallel to the detection reference plane and perpendicular to the displacement direction of the displacement mechanism.

[0028] Optionally, it also includes:

[0029] The centering mechanism is used to perform a centering operation on the electronic product to be inspected carried by the lifting mechanism.

[0030] Optionally, a suction cup assembly for adsorbing the electronic product to be detected is provided on the top of the lifting mechanism.

[0031] Optionally, the thickness measuring mechanism comprises:

[0032] Mounting seat;

[0033] A height tester, arranged on the mounting seat, having a test head;

[0034] A pressing block, which is arranged on a side of the mounting seat close to the lifting mechanism and can be elastically displaced relative to the mounting seat;

[0035] The test head is located on a side of the mounting seat close to the lifting mechanism, so that when the lifting mechanism drives the electronic product to be tested to elastically abut against the pressing block, the test head abuts against the electronic product to be tested.

[0036] The screen defect detection device provided by the present application, during operation, first measures the thickness of the electronic product through a thickness measuring mechanism, and then adjusts the screen height of the electronic product according to the measured value through a lifting mechanism, so that when the displacement mechanism drives the electronic product to move, the screen of the electronic product is always on the detection reference plane, and the screen detection mechanism is oriented toward the detection position on the detection reference plane. The screen detection mechanism can be used to perform defect detection on the screens of electronic products of different thicknesses, so that multiple models can be put into mixed production at the same time, thereby improving production capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0038] Figure 1 A perspective view of the screen defect detection device according to some embodiments;

[0039] Figure 2 It is a schematic structural diagram of a light source module shown in some embodiments;

[0040] Figure 3 Partial structural diagram of the screen defect detection device shown in some embodiments

[0041] Figure 4 A structural diagram of a No. 2 drum line shown in some embodiments;

[0042] Figure 5 The structural diagrams of the lifting mechanism and the displacement mechanism shown in some embodiments;

[0043] Figure 6 A structural diagram of a centering mechanism and a thickness measuring mechanism shown in some embodiments;

[0044] Figure 7 A flowchart of the work flow of the screen defect detection device shown in some embodiments.

[0045] In the figure: 1. Electronic products to be tested; 2. Code reading mechanism; 3. Centering mechanism; 31. Support frame; 32. Clamping block; 4. Thickness measuring mechanism; 41. Mounting seat; 42. Height tester; 43. Test head; 44. Press block; 5. Lifting mechanism; 51. Suction cup assembly; 6. Displacement mechanism; 7. Light source module; 71. Dark field light source; 72. Bright field light source; 73. Cross field light source; 74. Light source mounting plate; 8. Camera module; 9. Camera mounting plate; 10. Rack; 11. Feed roller line; 12. No. 1 roller line; 13. No. 2 roller line; 14. No. 3 roller line; 15. No. 4 belt line; 16. No. 5 roller line; 17. No. 6 roller line; 18. Discharge roller line; 19. Hollow area. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0047] like Figure 1-Figure 7 As shown, an embodiment of the present application provides a screen defect detection device, including a thickness measuring mechanism 4, a lifting mechanism 5, a displacement mechanism 6 and a screen detection mechanism.

[0048] The thickness measuring mechanism 4 is used to measure the thickness of the electronic product 1 to be detected, and the lifting mechanism 5 is used to carry the electronic product 1 to be detected and can drive the electronic product 1 to be detected to rise and fall. The thickness measuring mechanism 4 and the lifting mechanism 5 are communicated and connected. When working, the lifting mechanism 5 can be lifted and lowered according to the measurement value of the thickness measuring mechanism 4. When the thickness of the electronic product 1 to be detected is larger, the lifting value of the lifting mechanism 5 is smaller. When the thickness of the electronic product 1 to be detected is smaller, the lifting value of the lifting mechanism 5 is larger, so that the screens of the electronic products 1 to be detected with different thicknesses can all be on the detection reference plane.

[0049] The lifting mechanism 5 is connected to the displacement mechanism 6 so that the displacement mechanism 6 can drive the lifting mechanism 5 to move, and the displacement direction of the displacement mechanism 6 is parallel to the detection reference plane, so that the screen of the electronic product 1 to be detected is always on the detection reference plane during the displacement process.

[0050] Among them, the detection reference surface has a detection position, which is on the movement path of the electronic product 1 to be detected driven by the displacement mechanism 6, and the screen detection mechanism is facing the detection position. During operation, the electronic product 1 to be detected passes through the detection position, and at the same time, the screen detection mechanism detects the screen of the electronic product 1 to be detected at the detection position, thereby completing the screen defect detection of the electronic product 1 to be detected.

[0051] It should be noted that the detection reference plane is not limited to an actual plane, but can also be a virtual reference plane in space. The setting of the detection reference plane is used to illustrate that the screen of the electronic product 1 to be detected is always on the same plane during the displacement process, wherein at least the width of the detection position is greater than the width of the electronic product 1 to be detected, so that the screen detection mechanism can perform a comprehensive detection of the electronic product 1 to be detected.

[0052] During the working process, the thickness of the electronic product 1 to be inspected is first measured by the thickness measuring mechanism 4, and then the screen height of the electronic product 1 to be inspected is adjusted by the lifting mechanism 5 according to the measured value, so that when the displacement mechanism 6 drives the electronic product 1 to be inspected to move, the screen of the electronic product 1 to be inspected is always on the detection reference plane, and the screen detection mechanism is oriented to the detection position on the detection reference plane. The screen detection mechanism can be used to perform defect detection on the screens of the electronic products 1 to be inspected with different thicknesses, so that multiple models can be put into production at the same time, thereby improving production capacity.

[0053] In some embodiments, the screen detection mechanism includes a light source module 7 and a camera module 8. The light source module 7 is oriented toward the detection position of the detection reference plane, and is provided with multiple light source modules with different light intensities, such as two, three or four. When working, by controlling the multiple light source modules 7 to light up and turn off in sequence according to a preset order, the multiple light source modules 7 can sequentially illuminate the detection position in a preset order, and then sequentially switch the light intensity of the detection position. The camera module 8 is oriented toward the detection position of the detection reference plane, and can capture images of the detection position. When working, when the displacement mechanism 6 drives the screen of the electronic product 1 to be detected to pass through the detection position, the multiple light source modules 7 sequentially illuminate the screen at the detection position in a preset order, and the camera module 8 captures images of the screen at the detection position. In this way, by collecting image information of the screen of the electronic product 1 to be detected under different light intensities, it is beneficial to improve the quality of defect detection.

[0054] like Figure 2As shown, multiple light source modules 7 are respectively located in multiple different directions of the detection position. By irradiating the detection position from multiple different directions, the positions of the multiple light source modules 7 can be staggered to avoid interference, which is conducive to obtaining the best light source conditions for image acquisition.

[0055] For example, the plurality of light source modules 7 include a bright field light source 72, a dark field light source 71 and a cross field light source 73. The angle formed between the bright field light source 72 and the detection reference plane is 65-80 degrees, the angle formed between the dark field light source 71 and the detection reference plane is 55-65 degrees, and the angle formed between the cross field light source 73 and the detection reference plane is 55-65 degrees. Specifically, the angle formed between the bright field light source 72 and the vertical plane is 10-15 degrees, the angle formed between the dark field light source 71 and the vertical plane is 15-25 degrees, and the angle formed between the cross field light source 73 and the vertical plane is 15-25 degrees, and the vertical plane is perpendicular to the detection reference plane and perpendicular to the displacement direction of the displacement mechanism 6.

[0056] Moreover, two dark-field light sources 71 are symmetrically arranged, and the two dark-field light sources 71 are respectively located upstream and downstream of the bright-field light source 72. Since most of the light in the dark field is relatively dark and does not enter the lens, the light entering the lens is basically reflected by the defects. By setting two dark-field light sources 71, the defect detection quality can be improved.

[0057] In this embodiment, the camera module 8 is set as a line scan camera, for example, the frequency of the line scan camera is set to 8-20KHz, which is conducive to improving the speed of taking pictures. At the same time, the displacement mechanism 6 is set as a linear motor. The linear motor has a relatively large acceleration. Compared with other forms such as the lead screw nut form, the speed fluctuation is relatively low, and the movement is more stable, which is conducive to driving the lifting mechanism to move at a high speed, thereby improving the defect detection speed. In this way, through the combination of the line scan camera and the linear motor, the defect detection of the screen of the electronic product 1 to be inspected can be completed quickly, which is conducive to improving production capacity.

[0058] During the defect detection process, the linear motor drives the lifting mechanism 5 and the electronic product to be detected 1 to move at high speed. At the same time, the linear motor transmits the position information of the electronic product to be detected 1 to the control system at an interval of 0.005 mm. The control system controls multiple light source modules 7 to switch the light intensity according to the position information. In a very short time, the camera module 8 obtains the detailed area pictures of the same position under each light intensity. After the shooting is completed, the control system synthesizes the detailed area pictures recorded at each position into high-definition pictures, at least one display screen at high brightness, and at least one display screen at low brightness. The state of different screen defects can be fully exposed under different light source environments. The control system will judge the quality of the mobile phone according to the preset standards by determining the defect category, length, width, quantity and other detailed information. In this way, the line scan camera and the linear motor with position information feedback cooperate with each other, making the shooting time faster than the traditional industrial method. The current method can complete the assessment of a screen grade within 6 seconds. Normal manual judgment requires at least 30 seconds, which is more efficient than manual.

[0059] In addition, the background environment of the detection position relative to the multiple light source modules 7 is set to a pure color structure and / or an orange-striped structure to ensure that there will be no reflected light and refracted light during shooting, thereby reducing the interference of environmental factors on product imaging. For example, the components around the detection position are provided with a pure color orange-striped structure on at least one side close to the light source module 7. Among them, the pure color structure is set to black, and during processing, it can be formed by a baking paint process or a sandblasting anodizing process. The orange-striped structure is processed on the surface of the workpiece using an orange-striped process to form an orange-striped texture on the surface of the workpiece. The background environment may include a lifting mechanism, a displacement mechanism, a conveyor line, a centering mechanism, a thickness measuring mechanism, a light source mounting plate, etc.

[0060] like Figure 2 As shown, the screen defect detection device includes a frame 10, and the thickness measuring mechanism, the lifting mechanism, the displacement mechanism and the screen detection mechanism are all carried on the frame, so that the frame serves as the position reference of the screen detection device. Specifically, the frame includes a bottom support frame and a side support frame, and the side support frame is connected to one side of the bottom support frame. When placed, the bottom support frame is in a horizontal state and the side support frame is in a vertical state. Among them, the thickness measuring mechanism, the lifting mechanism and the displacement mechanism are arranged on the bottom support frame, and the screen detection mechanism is arranged on the side support frame.

[0061] The screen detection mechanism includes a light source mounting plate 74, which is connected to the frame 10 of the screen defect detection device (specifically connected to the side support frame), and multiple light source modules 7 are connected to the light source mounting plate 74 through an arc track so that the multiple light source modules 7 can be displaced relative to the light source mounting plate 74, which is conducive to adjusting the direction and angle of each light source module 7 relative to the detection position. Specifically, two light source mounting plates 74 are provided, and the multiple light source modules 7 are located between the two light source mounting plates 74. An arc track can be provided on the light source mounting plate 74, and multiple light source modules 7 share one arc track. Multiple arc tracks can also be provided on the light source mounting plate 74, and the radius of the arc tracks is different. Multiple light source modules 7 are arranged one-to-one on multiple arc tracks to avoid interference between multiple light source modules 7.

[0062] The screen detection mechanism includes a camera mounting plate 9, a camera module 8 is rotatably connected to the camera mounting plate 9, a rotation axis of the camera module 8 is parallel to the detection reference plane, and perpendicular to the displacement direction of the displacement mechanism 6, the camera mounting plate 9 is slidably connected to the frame 10 (specifically connected to the side support frame), and the sliding direction of the camera mounting plate 9 is consistent with the displacement direction of the displacement mechanism 6. In this way, the direction and angle of the camera module 8 relative to the detection position can be adjusted, which is conducive to avoiding the light source module 7 and obtaining the best shooting position.

[0063] It is understandable that the above-mentioned displaceable connection of the light source module 7 and the camera module 8 is conducive to the assembly and adaptive adjustment of the light source module 7 and the camera module 8. During the operation, the positions of the light source module 7 and the camera module 8 remain fixed. Of course, in other solutions, the light source module 7 and the camera module 8 can also be fixed relative to the frame 10.

[0064] In some embodiments, the screen defect detection device includes a conveyor line, which is used to convey electronic products (including electronic products to be detected 1 and detected electronic products to be detected) so that the electronic products can be fed, tested, transported and discharged on the conveyor line. The thickness measuring mechanism 4 is arranged above the conveyor line, and the lifting mechanism 5 and the displacement mechanism 6 are arranged below the conveyor line. A hollow area 19 is arranged in the middle of the conveyor line, so that the lifting mechanism 5 below can pass through the middle of the conveyor line to protrude upward from the upper surface of the conveyor line, so that the lifting mechanism 5 can lift and lower the electronic product to be detected 1 on the conveyor line. Moreover, the extension direction of the hollow area 19 is consistent with the conveying direction of the conveyor line. When the lifting mechanism 5 drives the screen of the electronic product to be detected 1 to be lifted to the detection reference plane (the detection reference plane is higher than the upper surface of the conveyor line), the displacement mechanism 6 can drive the lifting mechanism 5 to move in the hollow area 19, and the displacement direction is consistent with the conveying direction of the conveyor line, so as to put the detected electronic product back to the conveyor line after the detection is completed. In this way, by setting the hollow area 19, the lifting and displacement of the lifting mechanism 5 can be avoided, thereby improving the smoothness and stability of the process connection.

[0065] Specifically, the conveyor line can be set in the form of a belt line or a roller line. For example, the conveyor line is provided with multiple sections, including a feed roller line 11, a No. 1 roller line 12, a No. 2 roller line 13, a No. 3 roller line 14, a No. 4 belt line 15, a No. 5 roller line 16, a No. 6 roller line 17 and a discharge roller line 18. Among them, a code reading mechanism 2 (such as a code reader) is arranged on the feed conveyor line, which is used to read the SN code on the electronic product 1 to be tested to obtain parameter information of the electronic product 1 to be tested; the No. 1 roller line 12 is set as a feed cache position, and the middle part of the No. 2 roller line 13 is provided with the above-mentioned hollow area 19. For example, the No. 2 roller line 13 has two rows of rollers arranged at intervals, and a hollow area 19 is formed between the two rows of rollers. A screen detection mechanism and a thickness measurement mechanism 4 are arranged above the No. 2 roller line 13, and a lifting mechanism 5 and a displacement mechanism 6 are arranged below the No. 2 roller line 13; the No. 3 roller line 14 is set as a test completion cache position; the No. 4 belt line 15 is used to transfer the No. 3 roller line 14 and the No. 5 roller line 16 to realize lateral conveying, and the No. 5 roller line 16 and the No. 6 roller line 17 are both outflow cache positions.

[0066] like Figure 5 As shown, a suction cup assembly 51 is provided on the top of the lifting mechanism 5. When the lifting mechanism 5 rises and contacts the electronic product 1 to be detected, the suction cup assembly 51 can absorb the electronic product 1 to be detected, so as to achieve a stable connection between the lifting mechanism 5 and the electronic product 1 to be detected. In the subsequent process, the lifting mechanism 5 can well drive the electronic product 1 to be detected to rise and fall and move, and avoid relative sliding between the electronic product 1 to be detected and the lifting mechanism 5. Moreover, it is conducive to the displacement mechanism 6 to drive the lifting mechanism 5 to move at a high speed, further improving the detection efficiency.

[0067] In some embodiments, the screen defect detection device includes a centering mechanism 3, which is located upstream of the lifting mechanism 5. During operation, the electronic product 1 to be inspected is first centered by the centering mechanism 3 to place the electronic product 1 to be inspected in a suitable position, so that the lifting mechanism 5 can lift and lower the electronic product 1 to be inspected, which is suitable for electronic products 1 to be inspected of various sizes.

[0068] like Figure 6 As shown, the centering mechanism 3 includes a support frame 31 and a plurality of clamping blocks 32, wherein the support frame 31 is connected above the conveyor line, for example, the support frame 31 is configured as a gate type. The plurality of clamping blocks 32 are displaceably connected to the support frame 31 and are respectively located on both sides of the conveyor line, for example, two clamping blocks 32 are provided, and are displaced relative to the support member under the driving action of a servo motor, so that the plurality of clamping blocks 32 form a servo clamp. During operation, the conveyor line can drive the electronic product 1 to be detected to pass through the support frame 31 and the plurality of clamping blocks 32. When the electronic product 1 to be detected is between the plurality of clamping blocks 32, the control system can control the plurality of clamping blocks 32 to approach, and clamp the electronic product 1 to be detected by the plurality of clamping blocks 32 to form a servo clamp, thereby completing the centering operation of the electronic product 1 to be detected, which is conducive to precise control of the centering operation.

[0069] like Figure 7 As shown, the thickness measuring mechanism 4 includes a mounting seat 41, a height tester 42 and a pressure block 44. The mounting seat 41 is connected to the support frame 31 to be fixedly arranged above the conveyor line. For example, the mounting seat 41 is set as an L-shaped plate, the vertical part of the mounting seat 41 is connected to the support frame 31, and the horizontal part of the mounting seat 41 is connected to the height tester 42 and the pressure. The pressure block 44 is connected to the bottom of the mounting seat 41 (i.e., the side close to the lifting mechanism 5), and can be elastically displaced relative to the mounting seat 41. For example, the pressure block 44 is connected to the mounting seat 41 through a pull rod, and a spring is sleeved on the outer side of the connecting rod. Under the elastic force of the spring, during the rising process of the electronic product 1 to be detected, the pressure block 44 can gradually press against the screen of the electronic product 1 to be detected. At the same time, under the pressure of the pressure, the suction cup assembly 51 on the top of the lifting mechanism 5 can be more stably connected to the electronic product 1 to be detected, thereby improving the connection strength between the electronic product 1 to be detected and the lifting mechanism 5.

[0070] The height tester 42 has a test head 43, which is arranged on the mounting seat 41, and the test head 43 is located below the mounting seat 41 (i.e., on the side close to the lifting mechanism 5). When the lifting mechanism 5 drives the electronic product 1 to be tested to rise, the pressing block 44 and the test head 43 can simultaneously abut against the electronic product 1 to be tested. Since the pressing block 44 and the test head 43 can both be elastically displaced up and down, the horizontal heights of the pressing block 44 and the test head 43 can be the same or different. It is only necessary that the pressing block 44 can press the electronic product 1 to be tested and the height tester 42 can obtain the measurement value. In this way, by elastically pressing the electronic product 1 to be tested by the pressing block 44, the electronic product 1 to be tested can be made to fit with the top of the lifting mechanism 5, thereby improving the test accuracy of the height tester 42.

[0071] It should be noted that when the lifting mechanism 5 drives the electronic product 1 to be tested to rise to the preset position, the test head 43 of the height tester 42 abuts against the electronic product 1 to be tested and obtains a corresponding measurement value. By comparing the measurement value with the standard value, the actual thickness value of the electronic product 1 to be tested can be obtained.

[0072] In combination with the above specific embodiments and Figure 7 The working process principle of the screen defect detection equipment is explained in detail.

[0073] Manually operate the equipment to start up, including powering on the equipment and turning on the computer.

[0074] The product is manually placed on the equipment assembly line, namely, the feeding roller line 11. The barcode reader reads the SN code on the electronic product 1 to be tested. If the SN code can be recognized, the electronic product 1 to be tested enters the No. 1 roller line 12 inside the equipment. If the SN code cannot be recognized, the electronic product 1 to be tested enters the abnormal assembly line.

[0075] When the product reaches the No. 1 roller line 12 , if there is an electronic product 1 to be tested on the No. 2 roller line 13 , it is cached here; if there is no electronic product 1 to be tested, it automatically flows through the No. 1 roller line 12 and enters the No. 2 roller line 13 .

[0076] The electronic product 1 to be tested is conveyed by the No. 2 roller line 13 to the test preparation position, the centering mechanism 3 centers the electronic product 1 to be tested, and the test lifting mechanism 5 lifts the mobile phone. When the screen of the electronic product 1 to be tested contacts the thickness measuring mechanism 4 fixed above the lifting mechanism 5, the thickness measuring mechanism 4 can obtain the thickness information of the electronic product 1 to be tested, and the lifting mechanism 5 lowers the electronic product 1 to be tested to the required height for testing (i.e., the testing reference plane), and the displacement mechanism 6 moves the lifting mechanism 5 and the electronic product 1 to be tested at high speed. At the same time, the screen detection mechanism performs defect detection on the high-speed moving electronic product 1 to be tested, and obtains detailed information such as the defect type, length, width, and quantity of the screen by taking pictures with a camera, and judges the quality of the screen according to pre-established standards.

[0077] After the screen detection mechanism completes the detection, the lifting mechanism 5 descends and places the detected electronic products on the No. 2 roller line 13. The No. 2 roller line 13 transfers the detected electronic products to the No. 3 roller line 14. The detected electronic products pass through the No. 4 belt line 15, the No. 5 roller line 16, the No. 6 roller line 17 in sequence, and then flow out of the equipment through the discharging roller line 18.

[0078] It should be noted that "parallel" in this application means that one direction is parallel to another direction, but it is not limited to the absolute parallelism of the two. For example, one is close to parallel to the other, and it is defined here that the angle between close to parallel is less than 2 degrees. "Vertical" in this article means that one direction is perpendicular to another direction, but it is not limited to the absolute perpendicularity of the two. For example, one is close to perpendicular to the other, and it is defined here that the angle between close to perpendicular is less than 92 degrees and greater than 88 degrees.

[0079] The basic principles of the present application are described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, effects, etc. mentioned in the present application are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present application. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, not for limitation, and the above details do not limit the present application to being implemented by adopting the above specific details.

[0080] The block diagrams of the devices, apparatuses, equipment, and systems involved in this application are only illustrative examples and are not intended to require or imply that they must be connected, arranged, and configured in the manner shown in the block diagram. As will be appreciated by those skilled in the art, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any manner. Words such as "including", "comprising", "having", etc. are open words, referring to "including but not limited to", and can be used interchangeably with them. The words "or" and "and" used here refer to the words "and / or" and can be used interchangeably with them, unless the context clearly indicates otherwise. The words "such as" used here refer to the phrase "such as but not limited to", and can be used interchangeably with them.

[0081] It should also be noted that in the apparatus, device and method of the present application, each component or each step can be decomposed and / or recombined. Such decomposition and / or recombination should be regarded as equivalent solutions of the present application.

[0082] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the present application. Therefore, the present application is not intended to be limited to the aspects shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

[0083] It should be understood that the qualifiers "first", "second", "third", "fourth", "fifth" and "sixth" used in the description of the embodiments of the present application are only used to more clearly explain the technical solutions and cannot be used to limit the scope of protection of the present application.

[0084] The above description has been given for the purpose of illustration and description. In addition, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations thereof.

Claims

1. A screen defect detection device, characterized in that: include: Thickness measuring mechanism, used to measure the thickness of the electronic product to be inspected; A lifting mechanism, used for carrying the electronic product to be detected, and capable of lifting and lowering the electronic product to be detected according to the measurement value of the thickness measuring mechanism, so that the screen of the electronic product to be detected is on the detection reference plane; A displacement mechanism connected to the lifting mechanism and capable of driving the lifting mechanism to move so as to cause the screen of the electronic product to be tested to move on the testing reference plane; The screen detection mechanism faces a detection position on the detection reference plane and is capable of detecting the screen of the electronic product to be detected that passes through the detection position.

2. The screen defect detection device according to claim 1, characterized in that: The screen detection mechanism comprises: A plurality of light source modules are arranged to illuminate the detection position in a preset order; The camera module faces the detection position and is capable of capturing images of the screen of the electronic product to be detected which is located at the detection position and illuminated by the multiple light source modules in a preset order.

3. The screen defect detection device according to claim 2, characterized in that: The plurality of light source modules are respectively located in a plurality of different directions of the detection position.

4. The screen defect detection device according to claim 2, characterized in that: The plurality of light source modules include: The bright field light source forms an angle of 65-80 degrees with the detection reference plane; The dark field light source forms an angle of 55-65 degrees with the detection reference plane; The cross-field light source forms an angle of 55-65 degrees with the detection reference plane; Wherein, two dark field light sources are symmetrically arranged.

5. The screen defect detection device according to claim 2, characterized in that: The components around the detection position are provided with a pure color structure and / or an orange-striped structure on at least one side close to the light source module.

6. The screen defect detection device according to claim 2, characterized in that: The camera module is configured as a line scan camera, and the displacement mechanism is configured as a linear motor.

7. The screen defect detection device according to claim 2, characterized in that: The screen defect detection device comprises a frame, and the thickness measurement mechanism, the lifting mechanism, the displacement mechanism and the screen detection mechanism are all carried on the frame; The screen detection mechanism comprises a light source mounting plate connected to a frame, and the plurality of light source modules are movably connected to the light source mounting plate via an arc track.

8. The screen defect detection device according to claim 2, characterized in that: The screen defect detection device comprises a frame, and the thickness measurement mechanism, the lifting mechanism, the displacement mechanism and the screen detection mechanism are all carried on the frame; The screen detection mechanism includes a camera mounting plate, which is slidably connected to the frame, and the sliding direction is consistent with the displacement direction of the displacement mechanism; the camera module is rotatably connected to the camera mounting plate, and the rotation axis is parallel to the detection reference plane and perpendicular to the displacement direction of the displacement mechanism.

9. The screen defect detection device according to claim 1, characterized in that: Also includes: The centering mechanism is used to perform a centering operation on the electronic product to be inspected carried by the lifting mechanism.

10. The screen defect detection device according to claim 1, characterized in that: A suction cup assembly for adsorbing the electronic product to be detected is arranged on the top of the lifting mechanism.

11. The screen defect detection device according to claim 1, characterized in that: The thickness measuring mechanism comprises: Mounting seat; A height tester, arranged on the mounting seat, having a test head; A pressing block, which is arranged on a side of the mounting seat close to the lifting mechanism and can be elastically displaced relative to the mounting seat; The test head is located on a side of the mounting seat close to the lifting mechanism, so that when the lifting mechanism drives the electronic product to be tested to elastically abut against the pressing block, the test head abuts against the electronic product to be tested.

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