Device for detecting automobile glass defects based on electronic cam function carrying camera and detection method

Abstract

The invention relates to the field of glass detection, in particular to a universal glass edge detection device which comprises a rack provided with a glass conveying module, an electronic cam main shaft, an electronic cam auxiliary shaft, a profile detection module and a glass edge detection module, and the profile detection module and the glass edge detection module are sequentially arranged in the feeding direction of the glass conveying module. The invention also provides a universal glass edge detection method, the electronic cam main shaft controls the glass conveying speed, performs profile detection on the conveyed glass to obtain glass edge coordinate information, the cam table is generated according to the glass conveying speed and the glass edge coordinate information, and the electronic cam slave shaft adjusts the glass edge detection focal length according to the cam table. According to the universal glass edge detection device and the universal glass edge detection method provided by the invention, edge detection can be carried out on glass in convection motion, the detection efficiency is high, the precision is high, and automatic detection of glass with different sizes, shapes and specifications can be met.

Description

[0001] This case is a divisional application based on the invention patent with application date 20240919, application number CN202411303603.9, and name “A universal glass edge detection device and a universal glass edge detection method” as the parent case. Technical Field

[0002] The present invention relates to the field of glass detection, and in particular to a universal glass edge detection device and a universal glass edge detection method. Background Art

[0003] The edge inspection of automotive glass is an important process in the production of automotive glass. At present, most automotive glass manufacturers use two main inspection methods, one is manual inspection and the other is machine inspection. The advantage of manual inspection is that the cost is low, but the disadvantages are also obvious. Manual inspection has visual fatigue and randomness, and cannot completely detect all defects or flaws. It is difficult to control product quality, and there are certain safety risks in the inspection operation. The advantage of machine inspection is that the degree of automation is high, and the inspection efficiency and quality can be guaranteed. Glass edge defect detection machine, such as the Chinese utility model patent with publication number CN218155983U, named a glass accessory position detection device, and the Chinese invention patent with publication number CN116466065A, named a rotary switching glass substrate edge detection device.

[0004] There are two detection methods for existing glass edge defect detection equipment: one is that the glass is clamped and stationary, and the detection module can be moved for detection; the other is to keep the detection module stationary and change the position of the glass to achieve detection. The disadvantage of the first solution is that although the automobile glass is static during the detection process, the detection module needs to move according to the external contour of the product, which is prone to errors. There are high requirements for the clamping accuracy of the glass and the movement accuracy of the detection module. The moving detection module also has the problem of difficulty in focusing. The entire inspection process is cumbersome and time-consuming, and the detection quality cannot be guaranteed. The disadvantage of the second solution is that the automobile glass needs to be placed in a customized mobile carrier or platform first to ensure the motion control accuracy of the glass. At the same time, it also has strict requirements on the size specifications, placement angles, and distance between the edge and the detection module of the glass. It cannot be connected to the glass production line, and online automatic detection cannot be achieved, and the detection efficiency is low. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a device and a detection method for detecting automobile glass defects based on an electronic cam function and a camera, which can perform high-precision and efficient automatic edge focus detection on glasses of different specifications in motion.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: A device for detecting automobile glass defects based on an electronic cam function and equipped with a camera, comprising: The frame is provided with a glass conveying module, an electronic cam main shaft and an electronic cam slave shaft, and a shape detection module and a glass edge detection module sequentially arranged along the feeding direction of the glass conveying module, and the electronic cam main shaft is connected to the glass conveying module; The control system is used to receive information sent by the electronic cam main shaft and the shape detection module and generate a cam table. The electronic cam slave shaft adjusts the detection focal length of the glass edge detection module according to the cam table.

[0007] Furthermore, the electronic cam main shaft is a conveying motor with an electronic cam functional module, and the electronic cam slave shaft is an adjusting motor with an electronic cam functional module.

[0008] Furthermore, the glass conveying module conveys the glass along a plane, the viewing angle and illumination direction of the shape detection module are perpendicular to the plane, and the viewing angle and illumination direction of the glass edge detection module are parallel to the plane.

[0009] Furthermore, the glass edge detection module includes an edge detection camera assembly, a fixed beam splitter and a movable beam splitter. The edge detection camera assembly and the fixed beam splitter are arranged on a frame, and the movable beam splitter is movably arranged on the frame. The electronic cam is connected to the movable beam splitter from the shaft. The fixed beam splitter and the movable beam splitter are used to adjust the viewing angle and lighting direction of the edge detection camera assembly.

[0010] Furthermore, a servo screw module is provided on the frame, and the electronic cam slave shaft is connected to the movable spectroscope through the servo screw module.

[0011] Furthermore, a group of electronic cam slave shafts are respectively arranged on both sides of the frame perpendicular to the feeding direction of the glass conveying module, and a group of glass edge detection modules are respectively arranged on both sides of the frame perpendicular to the feeding direction of the glass conveying module.

[0012] Furthermore, a feeding induction sensor is provided on the frame and is arranged toward the glass conveying module, and the control system is connected to the feeding induction sensor.

[0013] The present invention also provides a detection method for a device based on an electronic cam function and equipped with a camera to detect defects in automobile glass. The electronic cam main shaft controls the glass conveying speed, performs surface detection on the glass being conveyed to obtain glass edge coordinate information, generates a cam table based on the glass conveying speed and the glass edge coordinate information, and the electronic cam slave shaft adjusts the glass edge detection focal length based on the cam table.

[0014] Furthermore, an electronic cam main shaft is used to control the glass conveying module to convey the glass at the glass conveying speed, and a shape detection module is used to detect and obtain glass edge coordinate information relative to the glass conveying module. The electronic cam slave shaft adjusts the detection coordinates of the glass edge detection module relative to the glass conveying module according to a cam table generated according to the glass conveying speed and the glass edge coordinate information, so that the glass edge detection module automatically focuses on the edge of the glass being conveyed.

[0015] Furthermore, a cam coupling interval is preset. When the glass enters the cam coupling interval, the electronic cam main shaft, the glass conveying module, the shape and surface detection module, the electronic cam slave shaft and the glass edge detection module are coupled. When the glass leaves the cam coupling interval, the electronic cam main shaft, the glass conveying module, the shape and surface detection module, the electronic cam slave shaft and the glass edge detection module are decoupled.

[0016] The beneficial effects of the present invention are: providing a universal glass edge detection device and a universal glass edge detection method, which can realize one machine compatible with a variety of automotive glasses of different sizes and shapes, changing the shortcomings of fixed detection of previous products, being flexible, convenient and highly compatible. It can realize fully automated operation and intelligent operation. After the equipment is started, the glass is conveyed at a preset speed under the control of the electronic cam main shaft. The glass is first subjected to a surface detection to obtain the edge shape of the glass, thereby determining the position coordinates of the edge of the glass to be inspected during the conveying process, and then a control cam table is generated in combination with the glass conveying speed and the glass edge coordinate information. The cam table is used as the basis for adjusting the focal length of the glass edge detection, and can realize automatic focusing and rapid follow-up detection of the glass edge under the control of the electronic cam slave shaft. The shape detection module can send data to the control system according to the shape of the glass, and control the feeding speed of the glass conveying module in combination with the electronic cam spindle to generate electronic cam data. After the electronic cam receives the information sent by the control system from the shaft, it adjusts the detection focal length of the glass edge detection module according to the cam table, thereby realizing the automatic focus of the edge camera, realizing online automatic detection of the glass edge, greatly improving the detection efficiency, and improving the overall production efficiency. In addition, it can save the labor cost of glass detection operations, reduce quality risks, and easily realize the self-learning function in the camera's software control system, which can autonomously learn various defects. Combined with deep algorithms and training, it can identify various glass defects including edge burst, scratches, bright spots, burns, dirt, bubbles, etc., which is of great help to improve product quality, reduce manual inspection, reduce employee fatigue and defects caused by eye fatigue, and achieve cost reduction and efficiency improvement. The equipment is simple to operate and maintain. After the equipment is powered on and initialized, the industrial computer is turned on to run the detection software to enter the automatic detection mode. There is no need to switch products and input parameters, avoiding tedious model change operations. The universal glass edge detection device and the universal glass edge detection method provided by the present invention can perform edge detection on glass in flow motion, have high detection efficiency and precision, and can meet the needs of automatic detection of glass of different sizes, shapes and specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a universal glass edge detection device; Figure 2 It is a structural schematic diagram of the surface detection module; Figure 3 It is the front view of the universal glass edge detection device; Figure 4 This is a structural schematic diagram of a glass edge detection module; Figure 5 It is a side view of a universal glass edge detection device; Description of labels: 1. Frame; 2. Glass conveying module; 3. Electronic cam main shaft; 4. Electronic cam slave shaft; 5. Surface detection module; 6. Glass edge detection module; 61. Edge detection camera assembly; 62. Fixed spectrometer; 63. Moving spectrometer; 7. Control system; 8. Servo screw module; 9. Feeding induction sensor. DETAILED DESCRIPTION

[0018] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in combination with the implementation modes and the accompanying drawings.

[0019] The invention provides a universal glass edge detection device and a universal glass edge detection method, which are used in the edge defect detection operation of automobile glass.

[0020] Please refer to Figures 1 to 5 As shown, a universal glass edge detection device comprises: The frame 1 is provided with a glass conveying module 2, an electronic cam main shaft 3 and an electronic cam slave shaft 4, and a shape detection module 5 and a glass edge detection module 6 which are sequentially arranged along the feeding direction of the glass conveying module 2, and the electronic cam main shaft 3 is connected to the glass conveying module 2; The control system 7 is used to receive information sent by the electronic cam main shaft 3 and the shape detection module 5 and generate a cam table. The electronic cam slave shaft 4 adjusts the detection focal length of the glass edge detection module 6 according to the cam table.

[0021] From the above description, it can be seen that the beneficial effects of the present invention are: the shape detection module 5 can send data to the control system 7 according to the shape of the glass, and control the feeding speed of the glass conveying module 2 in combination with the electronic cam main shaft 3 to generate electronic cam data. After the electronic cam slave shaft 4 receives the information sent by the control system 7, it adjusts the detection focal length of the glass edge detection module 6 according to the cam table, thereby realizing automatic focusing of the edge camera and realizing online automatic detection of the glass edge, which greatly improves the detection efficiency and improves the overall production efficiency.

[0022] In an optional embodiment, the electronic cam main shaft 3 is a conveying motor with an electronic cam function module, and the electronic cam slave shaft 4 is a regulating motor with an electronic cam function module.

[0023] From the above description, it can be known that the electronic cam function of the conveying motor is used to set the servo as the main axis, and the regulating motor equipped with the glass edge detection module 6 is set as the slave axis, and the main axis and the slave axis are coupled and linked to each other so that the glass edge detection module 6 can automatically focus. The regulating motor with the electronic cam function obtains the motion trajectory of the glass edge detection module 6 according to the electronic cam data generated by the automobile glass shape detection module 5 in the control system 7, and controls the glass edge detection module 6 to automatically focus on the glass edge when the regulating motor receives the coupling start command.

[0024] In an optional embodiment, the glass conveying module 2 conveys glass along a plane, the viewing angle and illumination direction of the shape detection module 5 are perpendicular to the plane, and the viewing angle and illumination direction of the glass edge detection module 6 are parallel to the plane.

[0025] From the above description, it can be seen that the detection area of ​​the shape detection module 5 is perpendicular to the plane where the glass is conveyed, so that the coordinate information of the glass edge can be obtained completely and accurately. The viewing angle and lighting direction of the glass edge detection module 6 are toward the glass above the conveying plane, so as to fully detect the edge of the glass.

[0026] In an optional embodiment, the glass edge detection module 6 includes an edge detection camera assembly 61, a fixed beam splitter 62 and a movable beam splitter 63. The edge detection camera assembly 61 and the fixed beam splitter 62 are arranged on the frame 1, and the movable beam splitter 63 is movably arranged on the frame 1. The electronic cam is connected to the movable beam splitter 63 from the shaft 4. The fixed beam splitter 62 and the movable beam splitter 63 are used to adjust the viewing angle and lighting direction of the edge detection camera assembly 61.

[0027] From the above description, it can be seen that the viewing angle and illumination of the edge detection camera assembly 61 are refracted through the fixed beam splitter 62 and the movable beam splitter 63 in turn, so as to be aligned with the edge of the glass. The electronic cam is used to control the movable beam splitter 63 to move on the frame 1 from the axis 4, thereby changing the length of the detection light path from the edge detection camera assembly 61 to the edge of the glass, and then adjusting the focal length of the edge detection camera assembly 61, thereby avoiding the shortcomings of blurred images, poor quality, and high camera misjudgment rate caused by camera movement.

[0028] In an optional embodiment, a servo screw module 8 is provided on the frame 1 , and the electronic cam slave shaft 4 is connected to the movable beam splitter 63 through the servo screw module 8 .

[0029] From the above description, it can be known that the movable beam splitter 63 is slidably arranged on the servo screw module 8 , and the servo screw module 8 adjusts the position of the movable beam splitter 63 under the control of the electronic cam, thereby realizing smooth focusing of the glass edge detection module 6 .

[0030] In an optional embodiment, a group of electronic cam slave shafts 4 are arranged on both sides of the frame 1 along the feeding direction perpendicular to the glass conveying module 2, and a group of glass edge detection modules 6 are arranged on both sides of the frame 1 along the feeding direction perpendicular to the glass conveying module 2.

[0031] From the above description, it can be known that the electronic cam slave shafts 4 on both sides are used to control a group of glass edge detection modules 6 respectively, and the two groups of glass edge detection modules 6 perform edge detection on two opposite sides of the glass at the same time, with high detection efficiency.

[0032] In an optional embodiment, a feeding induction sensor 9 is provided on the frame 1 and is arranged toward the glass conveying module 2 , and the control system 7 is connected to the feeding induction sensor 9 .

[0033] From the above description, it can be seen that by presetting the edge detection interval on the glass conveying module 2, the feeding sensing sensor 9 is used to monitor whether there is glass passing through. When the glass passes through the feeding sensing sensor 9, it is determined to start detecting the glass. After the glass flows out of the cam coupling interval, each component is decoupled and reset, waiting for the next piece of glass to be inspected.

[0034] Please refer to Figures 1 to 5 As shown, a universal glass edge detection method of the present invention is used, in which the electronic cam main shaft 3 controls the glass conveying speed, performs shape detection on the glass being conveyed to obtain the glass edge coordinate information, generates a cam table according to the glass conveying speed and the glass edge coordinate information, and the electronic cam slave shaft 4 adjusts the glass edge detection focal length according to the cam table.

[0035] From the above description, it can be seen that the beneficial effects of the present invention are: providing a universal glass edge detection device and a universal glass edge detection method, which can realize that one machine is compatible with a variety of automotive glasses of different sizes and shapes, changing the shortcomings of fixed detection of previous products, being flexible and convenient, and having extremely high compatibility. It can realize fully automated operation and intelligent operation. After the equipment is started, the glass is conveyed at a preset speed under the control of the electronic cam main shaft 3. The glass is first subjected to a surface detection to obtain the edge shape of the glass, thereby determining the position coordinates of the edge of the glass to be inspected during the conveying process, and then a control cam table is generated in combination with the glass conveying speed and the glass edge coordinate information. The cam table is used as the basis for adjusting the focal length of the glass edge detection, and can realize automatic focusing and rapid follow-up detection of the glass edge under the control of the electronic cam slave shaft 4.

[0036] In an optional embodiment, the electronic cam main shaft 3 is used to control the glass conveying module 2 to convey the glass at the glass conveying speed, and the shape detection module 5 is used to detect and obtain the glass edge coordinate information relative to the glass conveying module 2. The electronic cam slave shaft 4 adjusts the detection coordinates of the glass edge detection module 6 relative to the glass conveying module 2 according to the cam table generated according to the glass conveying speed and the glass edge coordinate information, so that the glass edge detection module 6 automatically focuses on the edge of the glass being conveyed.

[0037] From the above description, it can be seen that the glass conveying speed of the glass conveying module 2 is controlled according to the size, shape and specifications of the glass. For example, for glass with curved edges, it is necessary to reduce the glass conveying speed to ensure detection accuracy, and obtain the glass edge coordinate information to determine the change in distance between the glass edge and the glass edge detection module 6 during the conveying process. According to the cam table generated by the two, the glass edge detection module 6 is controlled to automatically focus on the edge of the glass to ensure detection accuracy.

[0038] In an optional embodiment, a cam coupling interval is preset. When the glass enters the cam coupling interval, the electronic cam main shaft 3, the glass conveying module 2, the shape and surface detection module 5, the electronic cam slave shaft 4 and the glass edge detection module 6 are coupled. When the glass leaves the cam coupling interval, the electronic cam main shaft 3, the glass conveying module 2, the shape and surface detection module 5, the electronic cam slave shaft 4 and the glass edge detection module 6 are decoupled.

[0039] From the above description, it can be seen that the cam coupling interval is the edge detection interval. When the glass is transported on the assembly line and enters the edge detection interval, it is determined to start detecting the glass. After the glass flows out of the cam coupling interval, each component is decoupled and reset, waiting for the next piece of glass to be inspected.

[0040] Please refer to Figures 1 to 5 As shown, the first embodiment of the present invention is: a universal glass edge detection device, comprising: The frame 1 is provided with a glass conveying module 2, an electronic cam main shaft 3 and an electronic cam slave shaft 4, and a shape detection module 5 and a glass edge detection module 6 which are sequentially arranged along the feeding direction of the glass conveying module 2, and the electronic cam main shaft 3 is connected to the glass conveying module 2; The control system 7 is used to control the operation of the entire inspection machine, including an inspection host for storing, processing and interacting with product information, and a controller for driving various actuators such as cameras, light sources, robotic arms and mobile modules. The inspection host is used to receive information sent by the electronic cam main shaft 3 and the surface inspection module 5 and generate a cam table. The controller controls the electronic cam slave shaft 4 to adjust the inspection focal length of the glass edge inspection module 6 according to the cam table.

[0041] The electronic cam main shaft 3 is a conveying motor with an electronic cam functional module, and the electronic cam slave shaft 4 is an adjustment motor with an electronic cam functional module. The glass conveying module 2 conveys glass along a plane, the viewing angle and illumination direction of the shape detection module 5 are perpendicular to the plane, and the viewing angle and illumination direction of the glass edge detection module 6 are parallel to the plane. The glass conveying module 2 is a rubber roller transmission mechanism, and the rubber roller transmission mechanism includes more than two rubber rollers and a transmission assembly connecting two adjacent rubber rollers. The shape surface detection module 5 includes an array upper surface detection camera and light source assembly and a lower surface detection camera and light source assembly located on the upper and lower sides of the glass conveying module 2. The camera is perpendicular to the glass conveying module 2, and the scanning area of ​​the camera is perpendicular to the glass, ensuring that both the upper and lower surfaces of the glass can be detected. The irradiation angle of the light source is projected through the angle adjustment mechanism, so that the upper and lower array cameras can fully capture the glass. The glass edge detection module 6 includes an edge detection camera assembly 61, a fixed beam splitter 62 and a movable beam splitter 63. The edge detection camera assembly 61 and the fixed beam splitter 62 are arranged on the frame 1, and the movable beam splitter 63 is movably arranged on the frame 1. The electronic cam is connected to the movable beam splitter 63 from the shaft 4. The fixed beam splitter 62 and the movable beam splitter 63 are used to adjust the viewing angle and illumination direction of the edge detection camera assembly 61. The edge detection camera assembly 61 includes a fixed projection light source for projecting special stripes or dot patterns onto the edge of the glass, and a line scanning detection camera for photographing the imaging effect of the pattern projected on the edge of the automobile glass, and also includes a fan for camera heat dissipation, and a fixed bracket for mounting components. The movable beam splitter 63 has a protective cover for keeping the mirror surface stable and avoiding external dust pollution. A servo screw module 8 is provided on the frame 1, and the electronic cam is connected to the movable beam splitter 63 from the shaft 4 through the servo screw module 8. When the adjustment motor receives the coupling start command, it drives the servo screw module 8 to adjust the position of the mobile spectroscope 63, thereby realizing the function of the camera lens automatically focusing on the edge of the automobile glass. A set of electronic cam slave shafts 4 are respectively arranged on both sides of the frame 1 along the feeding direction perpendicular to the glass conveying module 2, and a set of glass edge detection modules 6 are respectively arranged on both sides of the frame 1 along the feeding direction perpendicular to the glass conveying module 2. A feeding induction sensor 9 is arranged on the frame 1 toward the glass conveying module 2, and the control system 7 is connected to the feeding induction sensor 9.

[0042] The working principle of the universal glass edge detection device of this embodiment is: Step S1, equipment initialization: the electronic cam slave shaft 4 and the electronic cam main shaft 3 are returned to their original positions, the trigger signals of the glass edge detection module 6 and the shape detection module 5 are reset, and the equipment discharge and request signals are reset; Step S2, the glass to be inspected flows into the glass conveying module 2, and the electronic cam main shaft 3 runs according to the preset speed; when the glass to be inspected flows through the feeding induction sensor 9, the master-slave axis coupling command is triggered, and a setting signal is sent to the surface inspection module 5 at the same time; Step S3, when the cam coupling command is issued, the control system 7 generates a cam table with the cam data calculated by the host computer, the electronic cam slave shaft 4 is driven according to the cam table, and the electronic cam main shaft 3 sends a signal to the glass edge detection module 6 according to the preset border inspection camera triggering interval; Step S4: when the inspected glass flows out of the preset border inspection camera triggering interval, the signal sent to the glass edge inspection module 6 is reset; Step S5, when the detected glass flows out of the glass conveying module 2, a reset signal is sent to the shape detection module 5, and a decoupling command is sent to the master and slave axes; at the same time, a return to origin setting signal is sent to the electronic cam main axis 3; Step S6: After the decoupling is completed, the electronic cam slave shaft 4 executes the homing command and resets the homing signal of the electronic cam master shaft 3; Step S7: After the glass inspection is completed, the host computer outputs the determination result according to the defect algorithm, and the program execution ends and returns to S101 to wait for the next piece of glass.

[0043] Please refer to Figures 1 to 5 As shown, the first embodiment of the present invention is: a universal glass edge detection method, the electronic cam main shaft 3 controls the glass conveying speed, performs surface detection on the glass being conveyed to obtain the glass edge coordinate information, generates a cam table according to the glass conveying speed and the glass edge coordinate information, and the electronic cam slave shaft 4 adjusts the glass edge detection focal length according to the cam table.

[0044] Please refer to Figures 1 to 5 As shown, the second embodiment of the present invention is based on the first embodiment: the electronic cam main shaft 3 is used to control the glass conveying module 2 to convey the glass at the glass conveying speed, the shape detection module 5 is used to detect and obtain the glass edge coordinate information relative to the glass conveying module 2, and the electronic cam slave shaft 4 adjusts the detection coordinates of the glass edge detection module 6 relative to the glass conveying module 2 according to the cam table generated by the glass conveying speed and the glass edge coordinate information, so that the glass edge detection module 6 automatically focuses on the edge of the glass being conveyed. A cam coupling interval is preset, and when the glass enters the cam coupling interval, the electronic cam main shaft 3, the glass conveying module 2, the shape detection module 5, the electronic cam slave shaft 4 and the glass edge detection module 6 are coupled, and when the glass leaves the cam coupling interval, the electronic cam main shaft 3, the glass conveying module 2, the shape detection module 5, the electronic cam slave shaft 4 and the glass edge detection module 6 are decoupled.

[0045] In summary, the present invention provides a universal glass edge detection device and a universal glass edge detection method, which can realize one machine compatible with a variety of automotive glasses of different sizes and shapes, changing the shortcomings of fixed detection of previous products, being flexible, convenient and highly compatible. It can realize fully automated operation and intelligent operation. After the equipment is started, the glass is conveyed at a preset speed under the control of the electronic cam main shaft. The glass is first subjected to a surface detection to obtain the edge shape of the glass, thereby determining the position coordinates of the edge of the glass to be inspected during the conveying process, and then a control cam table is generated in combination with the glass conveying speed and the glass edge coordinate information. The cam table is used as the basis for adjusting the focal length of the glass edge detection, and can realize automatic focusing and rapid follow-up detection of the glass edge under the control of the electronic cam slave shaft. The shape detection module can send data to the control system according to the shape of the glass, and control the feeding speed of the glass conveying module in combination with the electronic cam spindle to generate electronic cam data. After the electronic cam receives the information sent by the control system from the shaft, it adjusts the detection focal length of the glass edge detection module according to the cam table, thereby realizing the automatic focus of the edge camera, realizing online automatic detection of the glass edge, greatly improving the detection efficiency, and improving the overall production efficiency. In addition, it can save the labor cost of glass detection operations, reduce quality risks, and easily realize the self-learning function in the camera's software control system, which can autonomously learn various defects. Combined with deep algorithms and training, it can identify various glass defects including edge burst, scratches, bright spots, burns, dirt, bubbles, etc., which is of great help to improve product quality, reduce manual inspection, reduce employee fatigue and defects caused by eye fatigue, and achieve cost reduction and efficiency improvement. The equipment is simple to operate and maintain. After the equipment is powered on and initialized, the industrial computer is turned on to run the detection software to enter the automatic detection mode. There is no need to switch products and input parameters, avoiding tedious model change operations. The universal glass edge detection device and the universal glass edge detection method provided by the present invention can perform edge detection on glass in flow motion, have high detection efficiency and precision, and can meet the needs of automatic detection of glass of different sizes, shapes and specifications.

[0046] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's specification and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A device for detecting automobile glass defects based on an electronic cam function and equipped with a camera, characterized in that: include: The frame is provided with a glass conveying module, an electronic cam main shaft and an electronic cam slave shaft, and a shape detection module and a glass edge detection module sequentially arranged along the feeding direction of the glass conveying module, and the electronic cam main shaft is connected to the glass conveying module; A control system, used to receive information sent by the electronic cam main shaft and the shape detection module and generate a cam table, and the electronic cam slave shaft adjusts the detection focal length of the glass edge detection module according to the cam table; The electronic cam master axis is a conveying motor with an electronic cam function module, and the electronic cam slave axis is a regulating motor with an electronic cam function module; The glass edge detection module includes an edge detection camera assembly, a fixed beam splitter and a movable beam splitter. The edge detection camera assembly and the fixed beam splitter are arranged on a frame, the movable beam splitter is movably arranged on the frame, the electronic cam slave shaft is connected to the movable beam splitter, and the fixed beam splitter and the movable beam splitter are used to adjust the viewing angle and illumination direction of the edge detection camera assembly; A servo screw module is provided on the frame, and the adjustment motor is connected to the movable spectroscope through the servo screw module; When the adjustment motor receives the coupling start command, it drives the servo screw module to adjust the position of the mobile spectrometer and control the edge detection camera assembly to automatically focus on the edge of the automobile glass.

2. The device for detecting automobile glass defects based on an electronic cam function and equipped with a camera according to claim 1, characterized in that: The glass conveying module conveys the glass along a plane, the viewing angle and illumination direction of the shape detection module are perpendicular to the plane, and the viewing angle and illumination direction of the glass edge detection module are parallel to the plane.

3. The device for detecting automobile glass defects based on an electronic cam function and equipped with a camera according to claim 1, characterized in that: A set of electronic cam slave shafts are respectively arranged on both sides of the frame along the feeding direction perpendicular to the glass conveying module, and a set of glass edge detection modules are respectively arranged on both sides of the frame along the feeding direction perpendicular to the glass conveying module.

4. The device for detecting automobile glass defects based on an electronic cam function and equipped with a camera according to claim 1, characterized in that: A feeding induction sensor is arranged on the frame and is arranged toward the glass conveying module, and the control system is connected with the feeding induction sensor.

5. A detection method based on the device for detecting automobile glass defects based on the electronic cam function equipped with a camera according to any one of claims 1 to 4, characterized in that: The electronic cam main shaft controls the glass conveying speed, performs surface detection on the conveyed glass to obtain the glass edge coordinate information, generates a cam table based on the glass conveying speed and the glass edge coordinate information, and the electronic cam slave shaft adjusts the glass edge detection focal length based on the cam table.

6. The detection method of the device for detecting automobile glass defects based on the electronic cam function equipped with a camera according to claim 5, characterized in that: The electronic cam main shaft is used to control the glass conveying module to convey the glass at the glass conveying speed, and the shape detection module is used to detect and obtain the glass edge coordinate information relative to the glass conveying module. The electronic cam slave shaft adjusts the detection coordinates of the glass edge detection module relative to the glass conveying module according to the cam table generated according to the glass conveying speed and the glass edge coordinate information, so that the glass edge detection module automatically focuses on the edge of the glass being conveyed.

7. The detection method of the device for detecting automobile glass defects based on the electronic cam function equipped with a camera according to claim 6, characterized in that: A cam coupling interval is preset. When the glass enters the cam coupling interval, the electronic cam main shaft, glass conveying module, shape and surface detection module, electronic cam slave shaft and glass edge detection module are coupled. When the glass leaves the cam coupling interval, the electronic cam main shaft, glass conveying module, shape and surface detection module, electronic cam slave shaft and glass edge detection module are decoupled.

Images