Glass testing equipment
By using liftable light emitting components and mobile image capturing mechanism in the glass detection equipment, the problem of being unable to clearly capture glass corners in the prior art is solved, and the precise detection of glass corners and hole positions is achieved, and the detection accuracy is improved. and applicability.
Patent Information
- Application Number
- CN201811464124.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2018-12-03
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2038-12-03
AI Technical Summary
Existing glass detection equipment cannot clearly capture the edges and corners of the workpiece, resulting in a decrease in detection accuracy and making it difficult to obtain accurate contour image and size information.
A glass detection device is designed, using liftable light emitting components and mobile image capturing mechanisms. The light emitting components can move to the side of the glass, and combine the linear array camera and reflective components to achieve clear shooting of the edges and corners of the glass, and through The primary and secondary image capturing mechanisms obtain precise position information of edge corners and hole positions.
It improves the accuracy and applicability of glass detection, can clearly capture the sides and corners of the glass, obtain accurate dimensions and position information, and improves the detection accuracy.
Smart Images
Figure CN109738434B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of glass detection, and in particular to a glass detection device. Background Art
[0002] After glass products are manufactured and processed, they need to be inspected. Currently, the industry gradually adopts visual systems to measure the comprehensive geometric parameters of glass in order to achieve the purpose of monitoring during the production process. The inspection equipment on the market usually has an image capture component above the conveyor track and a light source below. The image capture component takes a linear picture of the workpiece as the workpiece moves along the conveyor track. However, this method cannot clearly capture the corners of the workpiece, making it difficult to effectively detect the contour image of the workpiece or the contour is inaccurate, reducing the accuracy of the inspection. Summary of the invention
[0003] The technical solution adopted by the present invention to solve the above-mentioned problem is to provide a glass inspection device, including a shell, a conveying mechanism and a primary image capturing mechanism respectively arranged in the shell, the primary image capturing mechanism includes an image capturing component and a liftable light-emitting component, the light-emitting component can provide the light source required for the image capturing component to take pictures, and the light-emitting component can move to the side of the workpiece and illuminate the workpiece.
[0004] As a further improvement of the above solution, the conveying mechanism is divided into a first conveying mechanism and a second conveying mechanism for synchronous conveying.
[0005] As a further improvement of the above solution, a secondary image capturing mechanism is also included, and the secondary image capturing mechanism is arranged in the gap between the first conveying mechanism and the second conveying mechanism.
[0006] As a further improvement of the above solution, the secondary image capturing mechanism is arranged at the front end of the primary image capturing mechanism.
[0007] As a further improvement of the above solution, a synchronous belt and a driving motor for driving the synchronous belt transmission are arranged between the first conveying mechanism and the second conveying mechanism.
[0008] As a further improvement of the above solution, the secondary image capturing mechanism includes a linear array camera and a light source which are respectively arranged on the upper and lower sides of the conveying mechanism. The light provided by the light source is irradiated on the glass and received by the linear array camera.
[0009] As a further improvement of the above solution, the primary image capturing mechanism is connected with a lateral moving component and a longitudinal moving component.
[0010] As a further improvement of the above scheme, the first-level image capture mechanism also includes a reflective component, the image capture component is arranged on the reflective surface side of the reflective component, the light source provided by the light-emitting component is irradiated onto the reflective component through the workpiece, and the light source can be received by the image capture component after being reflected by the reflective component.
[0011] As a further improvement of the above solution, the primary image capturing mechanism also includes an upper light source assembly.
[0012] As a further improvement of the above solution, the primary image capturing mechanism further includes an upper light source assembly arranged above the reflective assembly, and the reflective assembly is made of one-way perspective glass.
[0013] As a further improvement of the above solution, the light emitting component has at least two rotatable parts.
[0014] The beneficial effects of the present invention are as follows: compared with the prior art, the present invention illuminates the side of the glass through a movable light-emitting component, so that the image shooting component can clearly shoot the side of the glass, and can shoot the side of the glass in sequence, thereby obtaining a clear contour image of the glass, thereby improving the detection accuracy; secondly, the present invention first adopts a secondary image capturing mechanism to obtain the initial position information of the corners and hole positions of the glass to be tested, and the primary image capturing mechanism sequentially shoots the local images of the corners and hole positions of the glass to be tested according to the initial position information to obtain the precise position information of the corners and hole positions, thereby obtaining the precise size and position information of the glass to be tested, thereby improving the detection accuracy, and the glass detection device can size the glass with chamfered edges, thereby improving the applicability of the device; furthermore, the light-emitting component of the primary image capturing mechanism of the present invention can move vertically to the side of the glass corner, and the light source provided by the light-emitting component irradiates the side of the glass and is reflected onto the reflective component, and is reflected by the reflective component and received by the image capturing component, thereby obtaining a local image of the glass corner, thereby improving the detection accuracy of the glass corner. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly describes the drawings required for use in the description of the embodiments. Obviously, the drawings described are only part of the embodiments of the present invention, not all of the embodiments, and those skilled in the art can also obtain other design solutions and drawings based on these drawings without creative work.
[0016] Figure 1 It is a structural front view of a glass detection device of the present invention;
[0017] Figure 2 It is a structural top view of a glass detection device of the present invention;
[0018] Figure 3It is a structural schematic diagram of the primary image capturing mechanism of the present invention;
[0019] Figure 4 It is a cross-sectional schematic diagram of the primary image capturing mechanism of the present invention. DETAILED DESCRIPTION
[0020] The following will be combined with the embodiments and drawings to clearly and completely describe the concept, specific structure and technical effects of the present invention, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention.
[0021] like Figure 1 and Figure 2 A glass inspection device shown in the figure includes a shell 1, a first conveying mechanism 2 and a second conveying mechanism 3 sequentially arranged in the shell 1, the first conveying mechanism 2 and the second conveying mechanism 3 are arranged on the same horizontal plane, and a secondary image capturing mechanism and a primary image capturing mechanism are sequentially arranged along the conveying direction of the glass 4, the secondary image capturing mechanism is arranged in the gap between the first conveying mechanism 2 and the second conveying mechanism 3, the secondary image capturing mechanism includes a linear array camera 5 arranged above the gap and a light source 6 arranged below the gap, the light source 6 can be a general light source commonly used on the market, the light source 6 irradiates the glass 4 to be tested upward, and the light irradiating the glass 4 to be tested is received by the linear array camera 5 after being reflected by the surface of the glass 4 to form an image of the glass 4 to be tested, the first conveying mechanism 2 and the second conveying mechanism 3 synchronously convey the glass 4 to be tested, the secondary image capturing mechanism continuously shoots the glass 4 to be tested to obtain a complete image of the glass 4 to be tested, and then obtains preliminary position information of the corners of the glass 4 to be tested and the hole positions on the glass 4, and the primary image capturing mechanism performs partial shooting of the corners and the hole positions of the glass 4 to be tested according to the preliminary position information.
[0022] like Figure 3 and Figure 4The primary image capturing mechanism shown in the figure can move horizontally and vertically. Specifically, the primary image capturing mechanism includes a moving plate 7, an image capturing component 8 and a reflective component 10 respectively arranged on the moving plate 7. Preferably, the image capturing component 8 can be a planar array camera. The four sides of the reflective component 10 are provided with a liftable light emitting component 11. The light emitting component 11 is connected to a power source 12. The power source 12 is arranged vertically downward and can drive the light emitting component 11 to move up and down. The power source 12 is preferably a telescopic cylinder. The moving plate 7 is connected to a transverse moving component 14, which is arranged on a longitudinal moving component 15. The transverse moving component 14 and the longitudinal moving component 15 can both be electric cylinder slides commonly used on the market. The stage mechanism or the motor screw transmission mechanism can provide the first-level image capture mechanism with precise movement in the horizontal lateral and horizontal longitudinal directions; the specific movement mode of the first-level image capture mechanism is that the power source 12 drives the light-emitting component 11 to move downward to the side of the workpiece 4 and illuminate the workpiece 4, and the image capture component 8 can be set downward, so that the image capture component 8 can receive the light source emitted by the light-emitting component 11 and clearly capture the side of the workpiece 4; the image capture component 8 can also be set horizontally, and the reflective component 10 reflects the light emitted by the light-emitting component 11 and is received by the image capture component 8, so as to clearly capture the side of the workpiece 4. When the light source is reflected by the reflective component 10, the image capture component 8 is set on the reflective surface side of the reflective component 10.
[0023] As a further improvement of the above scheme, the light-emitting components 11 have at least two rotatable arrangements. Specifically, the light-emitting components 11 are connected to a rotating cylinder. The specific working method is that the two light-emitting components 11 are respectively moved to two adjacent sides of the workpiece 4 and illuminate the workpiece 4 at the same time, that is, illuminate the corners of the workpiece 4. The image capturing component 8 can clearly capture the corner image of the workpiece 4 without the need for a second shot, thereby improving the accuracy of workpiece detection and also improving the efficiency of detection. The light-emitting component 11 can rotate, that is, it can illuminate the four corners of the workpiece 4, thereby improving the applicability of the primary image capturing mechanism.
[0024] As a further improvement of the above scheme, Figure 2 and Figure 3As shown, a box body 9 is also provided on the movable plate 7, and the bottom surface and the left side surface of the box body 9 are open. A reflective component 10 is arranged in the box body 9 from left to right and tilted downward. The reflective surface of the reflective component 10 faces the left side surface of the box body 9. The image shooting component 8 is arranged on the left side surface of the box body 9. There are four light-emitting components 11 arranged on the outside of the box body 9. The horizontal moving component 14 and the longitudinal moving component 15 drive the movable plate 7 to move to the top of the corner of the workpiece 4 to be measured. The power source 12 drives the light-emitting component 11 to move downward to the workpiece 4 to be measured. On the side, the corner of the workpiece 4 to be measured is composed of two side surfaces, that is, two adjacent light-emitting components 11 can be driven to move to two adjacent side surfaces of the workpiece 4 to be measured and illuminate the two side surfaces respectively, and the light illuminates the workpiece 4 and is reflected onto the reflective component 10, and then reflected by the reflective component 10 and received by the image capturing component 8 to obtain an image of the corner, that is, a local image of the corner of the workpiece 4 to be measured; the above operations are performed on the remaining three corners of the workpiece 4 to be measured in turn, and local images of the remaining three corners of the workpiece 4 to be measured can be obtained.
[0025] It should be noted that the light-emitting component 11 is horizontally arranged, and the power source 12 drives the light-emitting component 11 to move downward to the side of the workpiece 4 to be measured. The light-emitting component 11 is turned on, and the light is horizontally irradiated on the side of the workpiece 4 to be measured. The light is divergent and is reflected by the workpiece 4 to the reflective component 10, so that it can be received by the image capture component 8.
[0026] It should be noted that when detecting the corners of the workpiece 4 to be measured, one light-emitting component 11 can be moved each time, that is, one light-emitting component 11 moves downward to one of the side surfaces of the corner of the workpiece 4 and illuminates the side surface. After the image capturing component 8 receives the image of the side surface, the other light-emitting component 11 moves downward and illuminates the other side surface of the corner. The image capturing component 8 needs to take images twice when capturing the image of the corner.
[0027] It should be noted that the light-emitting component 11 on the left side of the box body 9 is connected to a power source 12 which is arranged on the side of the box body 9, that is, the power source 12 is connected to one end of the light-emitting component 11 and drives the light-emitting component 11 to move vertically, and the light-emitting component 11 is fixedly connected to the output end of the power source 12. The light-emitting component 11 can be a light source commonly used on the market, such as an LED light board, etc., which is not heavy. Therefore, the design can be easily implemented. Such a design ensures that the image capturing component 8 can accurately receive the light source reflected by the reflective component 10.
[0028] It should be noted that, in the above embodiment, the left side of the box body 9 is open. In fact, the four side surfaces of the box body 9 can be opened separately. The principle followed is that the reflective component 10 is tilted in the box body 9, the image capturing component 8 is arranged at the front end of the reflective mirror of the reflective component 10, the light source provided by the light-emitting component 11 illuminates the workpiece 4 and is reflected onto the reflective component 10, and the light source can be received by the image capturing component 8 after being reflected by the reflective component 10.
[0029] As a further improvement of the above scheme, the inner wall of the box body 9 is provided with a light-absorbing material. The light-absorbing material means that when light is irradiated on an object, it does not transmit outside the illumination, and does not produce mapping, large flares and reflections. Instead, it absorbs light and then diffusely reflects part of the light, thereby maintaining regular light and dark levels. The light-absorbing material used in this embodiment can be light-absorbing cotton.
[0030] As a further improvement of the above scheme, Figure 3 As shown, an upper light source assembly 13 is arranged on the top of the box body 9, and the upper light source assembly 13 irradiates downward. At this time, the reflective assembly 10 can be a one-way perspective glass. The one-way perspective glass is a workpiece with a very high reflectance ratio for visible light. The reflective surface of the one-way perspective glass is arranged on the side close to the workpiece 4 to be measured, and its perspective surface is arranged on the side close to the upper light source assembly 13. The primary image capturing mechanism moves to the top of the hole on the workpiece 4 to be measured, and the upper light source assembly 13 is turned on. The light source passes through the perspective surface of the one-way perspective glass and irradiates the workpiece 4 to be measured. After being reflected by the surface of the workpiece 4 to be measured and the reflective surface of the one-way perspective glass, it is received by the image capturing assembly 8, thereby obtaining a partial image of the hole.
[0031] As a further improvement of the above scheme, a host computer is also included, which can receive and analyze the image information captured by the secondary image capture mechanism and the primary image capture mechanism, and includes a programmable controller or a single-chip microcomputer commonly used on the market; specifically, the secondary image capture mechanism captures a complete image of the glass 4 to be tested and transmits the image information to the host computer, and the host computer can analyze the preliminary size information of the glass 4 to be tested and the preliminary hole position information on the glass 4 to be tested according to the image information, and control the primary image capture mechanism to approach and capture the local images of the four corners and the hole positions of the glass 4 to be tested according to the preliminary size information and the preliminary hole position information, and then analyze the precise size information and the hole position information of the glass 4 to be tested according to the information of the obtained local images; the analysis principle of the host computer is not the protection subject of this technical scheme, and will not be repeated here.
[0032] It should be noted that the detection principle of the glass detection equipment is to use one of the corners captured by the first-level image capture mechanism as the coordinate origin of the absolute coordinate system. A small coordinate system is set in the local image. The local image captures the contour points of the corners, and the position of the contour points in the small coordinate system can be determined. According to the coordinate position of the small coordinate system and the displacement of the horizontal moving component 14 and the vertical moving component 15 relative to the coordinate origin, the positions of the remaining three corners and the holes on the glass 4 to be tested in the absolute coordinate system can be calculated, thereby obtaining the precise length and width data of the glass 4 to be tested and the position of the hole.
[0033] As a further improvement of the above scheme, the first conveying mechanism 2 and the second conveying mechanism 3 can both be roller or drum structures, and a synchronous belt and a driving motor for driving the synchronous belt transmission are also provided between the first conveying mechanism 2 and the second conveying mechanism 3. The driving motor in this embodiment is preferably a stepping motor or a servo motor. Specifically, a synchronous shaft is provided on both sets of conveyor belts, and the synchronous belt is sleeved on the synchronous shaft. The driving motor drives the first conveying mechanism 2 and the second conveying mechanism 3 to move synchronously through the synchronous belt transmission, and the driving motor keeps rotating at a uniform speed, that is, it can ensure that the first conveying mechanism 2 and the second conveying mechanism 3 convey the glass 4 to be tested at a uniform speed, and its function is to ensure that the secondary image capture mechanism can uniformly shoot the glass 4, so that the host computer can receive a complete image of the glass 4; when the primary image capture mechanism is shooting, since the primary image capture mechanism can move horizontally and vertically, the first conveying mechanism 2 and the second conveying mechanism 3 stop moving, so that the glass 4 to be tested is stationary relative to the ground, which is convenient for the primary image capture mechanism to shoot.
[0034] The above are only preferred embodiments of the present invention. The present invention is not limited to the above embodiments. As long as the technical effects of the present invention are achieved by the same means, they should belong to the protection scope of the present invention.
Claims
1. A glass detection device, characterized in that: It comprises a housing (1), a conveying mechanism and a primary image capturing mechanism respectively arranged in the housing (1), the primary image capturing mechanism comprising an image capturing component (8) and a liftable light emitting component (11), the light emitting component (11) being capable of providing a light source required for the image capturing component (8) to take pictures, and the light emitting component (11) being capable of moving to the side of the glass (4) and illuminating the glass (4); The primary image capturing mechanism further comprises a reflective component (10), the image capturing component (8) being arranged on one side of a reflective surface of the reflective component (10), the light source provided by the light emitting component (11) irradiating the reflective component (10) through the glass (4), and the light source being reflected by the reflective component (10) and then received by the image capturing component (8); It also comprises a box body (9), the bottom surface and the left side surface of the box body (9) being open, the reflective component (10) being arranged in the box body (9) tilted downward from left to right, the reflective surface of the reflective component (10) facing the left side surface of the box body (9), and the image capturing component (8) being arranged on the left side surface of the box body (9); The conveying mechanism is divided into a first conveying mechanism (2) and a second conveying mechanism (3) for synchronous conveying, and also includes a secondary image capturing mechanism, the secondary image capturing mechanism is arranged in the gap between the first conveying mechanism (2) and the second conveying mechanism (3), the secondary image capturing mechanism is arranged at the front end of the primary image capturing mechanism, the secondary image capturing mechanism includes a linear array camera (5) and a light source (6) respectively arranged on the upper and lower sides of the conveying mechanism, the light provided by the light source (6) irradiates the glass (4) and is received by the linear array camera (5); The primary image capturing mechanism comprises a movable plate (7), image capturing components (8) respectively arranged on the movable plate (7), and a reflective component (10); four sides of the reflective component (10) are each provided with a liftable light emitting component (11); the light emitting component (11) is connected to a power source (12); the power source (12) is arranged vertically downward and is capable of driving the light emitting component (11) to move upward and downward; the movable plate (7) is connected to a transverse moving component (14); the transverse moving component (14) is arranged on the longitudinal moving component (15); The light emitting components (11) have at least two rotatably arranged components, the light emitting components (11) being connected to a rotating cylinder, and the two light emitting components (11) being used to move to two adjacent sides of the glass (4) respectively and illuminate the glass (4) simultaneously.
2. A glass detection device according to claim 1, characterized in that: The primary image capturing mechanism also includes an upper light source component (13).
3. A glass detection device according to claim 1, characterized in that: The primary image capturing mechanism further comprises an upper light source assembly (13) arranged above the reflective assembly (10); the reflective assembly (10) is made of one-way perspective glass.