阅读说明：本技术 一种板材边缘缺陷检测装置、系统和方法 (Device, system and method for detecting edge defects of plate ) 是由 张雄斌 王罡 彭灿 梁迅 于 2019-11-15 设计创作，主要内容包括：本发明涉及一种板材边缘缺陷检测装置、系统和方法。一种板材边缘缺陷检测装置,包括：移动横轴、移动电机、移动支架、检测部件；所述移动支架装设在所述移动横轴上,通过所述移动电机驱动其在所述移动横轴上移动；所述移动支架具有U形凹槽；所述检测部件装设在所述凹槽内；所述检测部件包括两个检测相机和若干照明灯；两个所述检测相机装设在所述凹槽相对的两个内表面上,所述照明灯均匀排列在两个所述检测相机的周围。本装置通过多维空间结构光源以及分布式布置相机架构,对缺陷进行了多维分析,剔除了复杂环境带来的干扰,同时提高了对微小、隐蔽的缺陷的检测强度,对缺陷的检测和分类更加精准可靠,使得检测效率大大提升。(The invention relates to a device, a system and a method for detecting edge defects of a plate. A sheet edge defect detection apparatus, comprising: the device comprises a movable transverse shaft, a movable motor, a movable bracket and a detection component; the moving support is arranged on the moving transverse shaft and is driven to move on the moving transverse shaft by the moving motor; the movable bracket is provided with a U-shaped groove; the detection component is arranged in the groove; the detection part comprises two detection cameras and a plurality of illuminating lamps; two the detection camera is installed on two relative internal surfaces of recess, light align to grid is in two detection camera's periphery. This device arranges the camera framework through multidimension spatial structure light source and distributing type, has carried out multidimension analysis to the defect, has rejected the interference that the complex environment brought, has improved the detection intensity to small, hidden defect simultaneously, and is more accurate reliable to the detection and the classification of defect for detection efficiency promotes greatly.)

1. A sheet edge defect detection apparatus, comprising: the device comprises a movable transverse shaft, a movable motor, a movable bracket and a detection component; the moving support is arranged on the moving transverse shaft and is driven to move on the moving transverse shaft by the moving motor;

the movable bracket is provided with a U-shaped groove; the detection component is arranged in the groove;

the detection part comprises two detection cameras and a plurality of illuminating lamps; two the detection camera is installed on two relative internal surfaces of recess, light align to grid is in two detection camera's periphery.

2. The apparatus for detecting edge defects of sheet material as defined in claim 1, wherein the inspection camera is a high frequency and high resolution area camera or line camera.

3. The apparatus of claim 3, wherein the lens of the inspection camera forms an angle of 30 ° to 60 ° with the face of the sheet.

4. The apparatus of claim 1, further comprising a motion PLC controller for driving the motion motor in response to the command.

5. A system for detecting edge defects in a sheet material, comprising: the device comprises a positioning component, a detection component and a control component;

the control component comprises a preprocessor and a server; the server is connected with the preprocessor;

the positioning assembly comprises: the device comprises a positioning camera, a plurality of positioning rollers and a positioning PLC controller; the positioning camera and the positioning PLC are respectively connected with the preprocessor; the positioning rollers are respectively connected with the positioning PLC; the positioning roller is used for clamping a plate, adjusting the shape of the plate and moving the plate to the detection assembly;

the detection assembly comprises: the first detection device, the second detection device and the mobile device are respectively connected with the preprocessor; the moving device is used for moving the plate according to a preset speed and a preset direction;

the first detection device and the second detection device both adopt the plate edge defect detection device of any one of claims 1 to 4.

6. The system for detecting the edge defects of the plates according to claim 5, wherein the detection assembly further comprises a first transverse detection device arranged at a first preset position and a second transverse detection device arranged at a second preset position, and the first transverse detection device and the second transverse detection device are the same transverse detection device and are respectively connected with the preprocessor;

the transverse inspection device comprises: a lateral detection zone and a lateral lower detection zone; the transverse detection zone and the transverse lower detection zone are the same transverse detection zone;

the transverse detection belt comprises a plurality of transverse detection cameras and a plurality of transverse detection illuminating lamps distributed on the transverse detection cameras, and the transverse detection cameras are respectively connected with the preprocessor;

the orientation of a transverse detection camera of the first transverse detection device is opposite to the movement direction of the plate; the orientation of the transverse detection camera of the second transverse detection device is along the movement direction of the plate.

7. The system of claim 5, wherein the server is a tower server.

8. A method for detecting edge defects in a sheet material for use in the detection system of any one of claims 5 to 7, comprising the steps of:

s1, placing the plate into the positioning assembly, sending the image of the plate to the preprocessor by the positioning assembly, judging the shape of the plate by the preprocessor, sending a control instruction to the positioning PLC, driving the positioning rollers to lock the plate and adjust the shape, and moving the plate with the adjusted shape to the moving device;

s2, the preprocessor controls the first detection device 11 and the second detection device to detect the image data of the edges of the plate material along the edge movement of two sides of the plate material according to the shape of the plate material, and sends the image data to the preprocessor;

and S3, preprocessing the image data by the preprocessor, and putting the processed image data into a deep learning network for defect identification, classification and marking to obtain the edge defect data information of the plate.

9. The method for detecting the edge defects of the sheet material as claimed in claim 8, wherein the preprocessing comprises a filtering process and an image splicing process.

10. The method for detecting edge defects of sheet materials according to claim 8, wherein the step S2 further comprises:

the first and second lateral detection devices detect image data of lateral edges of the sheet material according to instructions of the preprocessor and transmit the detected image data to the preprocessor.

Technical Field

The invention relates to plate defect detection, in particular to a plate edge defect detection device, system and method.

Background

In recent years, with continuous progress of new technologies, plates and sheets are widely applied in the consumer market and the industrial field, and particularly, development of new energy causes a new sheet represented by photovoltaic glass to enter a high-speed development period, so that market demands are greatly increased day by day. Meanwhile, the development trend of automobile glass, liquid crystal flat glass and organic glass sheets is also on the day of steaming. Such glasses have stringent requirements for shape, size, permeability, etc.

For such glass, scratching, scuffing, over-grinding, over-polishing, engraving, sand chipping of the edges can affect the aesthetic appearance; stones, bubbles, fractures, broken edges and inclusions at the edges directly influence the stability of the material. However, the material edge is polished to be arc-shaped, and the introduction of the complex procedures makes the position and type of edge defects very complex and the defect detection difficult; on the other hand, when the glass workpiece is conveyed on the production line, the glass workpiece inevitably deflects left and right on the conveying line, so that the edge form is unknown when the glass workpiece reaches the detection position, which brings further difficulty to the defect detection. At present, the application of special-shaped materials is more and more, and the edge detection difficulty is further increased due to the shapes of triangles, pentagons and the like.

The existing devices aiming at edge detection have several kinds, but all have self limitations. Patent document No. 201010130696.1 discloses a device for detecting a through hole defect in an edge of a plate material, which uses an optical sensor to receive the energy of a light source under the plate material to determine whether the plate material has a through hole. The scheme can only detect the hole defects with extremely small proportion of the through hole defects, and the detection material is only suitable for the light-tight material. Patent document No. 201610550031.3 discloses an edge detection system of a glass substrate and a detection method thereof, which detects by using four detectors consisting of a line camera and an LCD light source, wherein the left and right detectors are parallel to the glass flow direction, and the front and rear detectors are perpendicular to the flow direction. The glass flow left and right detectors detect and then the detection before and after use is stopped. The method can detect defects of four edges of the glass, but has obvious limitation. First, one detector is responsible for one edge, but since many glass edges are in the shape of circular arcs, the detector consisting of only one camera cannot detect defects on the circular arcs, especially scratches, abrasions, sand collapses, engraving, and the like. Secondly, the glass is required to stop moving every time of front and back detection, so that the capacity is greatly reduced, special requirements on acceleration and deceleration of a roller way are required, energy is not saved, and the stability is poor. Furthermore, when the angle of the glass reaches the detection position is deviated, the scheme cannot detect the glass. Patent document No. 201720552649.3 discloses a substrate edge inspection apparatus using a single camera in cooperation with three prisms to inspect an edge, which is effective in some types of defect inspection by inspecting one edge in three directions, but has many disadvantages. First, the prism used as a reflector is very susceptible to wear and even damage, and has poor stability. Secondly, after the angle of the prism is fixed, the problem that the arc defect is difficult to collect can also occur, the complex situation of the edge is not considered in the scheme, more defects of the front side and the back side of the edge part are detected, and the front side and the back side defect detection equipment can well detect the defects. Furthermore, if the workpiece is shifted in the moving direction, the state of the workpiece at the detection position is changed, and the scheme cannot realize accurate defect detection. Finally, edge detection in the direction perpendicular to the glass motion cannot be achieved. Patent document No. 201721056128.5 discloses a glass substrate edge detection device that can detect a significant notch defect by sensing the distance between glass and the detection device using a distance sensor, but has a large limitation. Any defect except a large notch cannot be detected, and the precision is very poor. The device is very easy to be affected by the shaking and deflection of the transmission belt.

In view of the above, there still exist great defects in the art, and there is a need for further creation and invention. In summary, the existing scheme generally has the problem that the arc defect cannot be detected, and the poor stability cannot adapt to the complex field environment. Meanwhile, the condition that the glass with different widths is on line at the same time is not considered, and the special-shaped glass is not involved.

Disclosure of Invention

In view of the above-mentioned shortcomings of the prior art, the present invention provides a device, a system and a method for detecting edge defects of sheet materials, which can detect the defects of circular arc edges, detect the defects of edges of sheet materials with different widths or different types, improve the system stability, and realize high-efficiency edge detection in a complex field environment.

In order to achieve the purpose, the invention adopts the following technical scheme:

a sheet edge defect detection apparatus, comprising: the device comprises a movable transverse shaft, a movable motor, a movable bracket and a detection component; the moving support is arranged on the moving transverse shaft and is driven to move on the moving transverse shaft by the moving motor;

the movable bracket is provided with a U-shaped groove; the detection component is arranged in the groove;

the detection part comprises two detection cameras and a plurality of illuminating lamps; two the detection camera is installed on two relative internal surfaces of recess, light align to grid is in two detection camera's periphery.

Preferably, in the device for detecting edge defects of a sheet material, the detection camera is a high-frequency high-resolution area-array camera or a line-array camera.

Preferably, in the device for detecting edge defects of a sheet material, an angle formed by a lens of the detection camera and a surface of the sheet material is 30-60 degrees.

Preferably, the apparatus for detecting edge defects of a sheet material further comprises a mobile PLC controller for driving the mobile motor according to the response command.

A sheet edge defect detection system, comprising: the device comprises a positioning component, a detection component and a control component;

the control component comprises a preprocessor and a server; the server is connected with the preprocessor;

the positioning assembly comprises: the device comprises a positioning camera, a plurality of positioning rollers and a positioning PLC controller; the positioning camera and the positioning PLC are respectively connected with the preprocessor; the positioning rollers are respectively connected with the positioning PLC; the positioning roller is used for clamping a plate, adjusting the shape of the plate and moving the plate to the detection assembly;

the detection assembly comprises: the first detection device, the second detection device and the mobile device are respectively connected with the preprocessor; the moving device is used for moving the plate according to a preset speed and a preset direction;

the first detection device and the second detection device both adopt the plate edge defect detection device.

Preferably, the detection assembly further comprises a first transverse detection device arranged at a first preset position and a second transverse detection device arranged at a second preset position, and the first transverse detection device and the second transverse detection device are the same and are respectively connected with the preprocessor;

the transverse inspection device comprises: a lateral detection zone and a lateral lower detection zone; the transverse detection zone and the transverse lower detection zone are the same transverse detection zone;

the transverse detection belt comprises a plurality of transverse detection cameras and a plurality of transverse detection illuminating lamps distributed on the transverse detection cameras, and the transverse detection cameras are respectively connected with the preprocessor;

the orientation of a transverse detection camera of the first transverse detection device is opposite to the movement direction of the plate; the orientation of the transverse detection camera of the second transverse detection device is along the movement direction of the plate.

Preferably, in the plate edge defect detection system, the server is a tower server.

A method for detecting edge defects of a plate material for the detection system is characterized by comprising the following steps:

s1, placing the plate into the positioning assembly, sending the image of the plate to the preprocessor by the positioning assembly, judging the shape of the plate by the preprocessor, sending a control instruction to the positioning PLC, driving the positioning rollers to lock the plate and adjust the shape, and moving the plate with the adjusted shape to the moving device;

s2, the preprocessor controls the first detection device 11 and the second detection device to detect the image data of the edges of the plate material along the edge movement of two sides of the plate material according to the shape of the plate material, and sends the image data to the preprocessor;

and S3, preprocessing the image data by the preprocessor, and putting the processed image data into a deep learning network for defect identification, classification and marking to obtain the edge defect data information of the plate.

The method for detecting the edge defects of the sheet material is preferably characterized in that the preprocessing comprises filtering processing and image splicing processing.

Preferably, the method for detecting edge defects of a sheet material is characterized in that the step S2 further includes:

the first and second lateral detection devices detect image data of lateral edges of the sheet material according to instructions of the preprocessor and transmit the detected image data to the preprocessor.

Compared with the prior art, the device, the system and the method for detecting the edge defects of the sheet material have the following effects:

1. this device arranges the camera framework through multidimension spatial structure light source and distributing type, has carried out multidimension analysis to the defect, has rejected the interference that the complex environment brought, has improved the detection intensity to small, hidden defect simultaneously, and is more accurate reliable to the detection and the classification of defect for detection efficiency promotes greatly. Meanwhile, due to the two detection modules with different angles, the material edge can be covered in all directions, the defect that the prior art has blind spots is overcome, and the detection is more complete, accurate and reliable.

2. This device can detect the dysmorphism and the non-special-shaped panel of different width, can detect panel, the sheet that other techniques can't detect, satisfies all present market demands, simultaneously because the material need not stop or reduce the translation rate of panel in whole detection, detects speed and is showing the promotion.

Drawings

FIG. 1 is a cross-sectional view along a moving transverse axis of the structure of the apparatus for detecting edge defects of a sheet material according to the present invention;

FIG. 2 is a structural diagram of a detecting member in the detecting device provided by the present invention;

FIG. 3 is a diagram of one mode of use of the detection device provided by the present invention;

FIG. 4 is a block diagram of a system for detecting edge defects of a sheet material according to the present invention;

FIG. 5 is a schematic diagram of a system for detecting edge defects of a sheet material according to the present invention;

FIG. 6 is a flowchart of a method for detecting edge defects of a plate according to the present invention.

Detailed Description

In order to make the objects, technical solutions and effects of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.